CA2043431C - Device for monitoring the closure of the opening points of a motor vehicle - Google Patents
Device for monitoring the closure of the opening points of a motor vehicleInfo
- Publication number
- CA2043431C CA2043431C CA002043431A CA2043431A CA2043431C CA 2043431 C CA2043431 C CA 2043431C CA 002043431 A CA002043431 A CA 002043431A CA 2043431 A CA2043431 A CA 2043431A CA 2043431 C CA2043431 C CA 2043431C
- Authority
- CA
- Canada
- Prior art keywords
- circuit
- resonant
- generator
- central unit
- opening point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B77/00—Vehicle locks characterised by special functions or purposes
- E05B77/46—Locking several wings simultaneously
- E05B77/48—Locking several wings simultaneously by electrical means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5889—For automotive vehicles
- Y10T70/5973—Remote control
- Y10T70/5978—With switch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/60—Systems
- Y10T70/625—Operation and control
- Y10T70/65—Central control
Abstract
The invention relates to a device for monitoring the closure of the opening points of a motor vehicle, in which each opening point is equipped with a closure contact which is connected to a central unit.
It is characterised in that the central unit is connected to all the opening points by means of a single common line (8) with two conductors (31, 32), in that the central unit comprises at least one periodic-signal generator (28) connected to the said two conductors, in that each opening point comprises a passive receiver circuit tuned to the frequency of the periodic signal supplied by the said generator (28) of the central unit, the said passive circuit being connected in series with the closure contact of the said opening point, and in that the said device comprises, furthermore, means for signalling a closure fault which are sensitive to the variations of the signal generated by the generator in response to the actuation of the corresponding closure contact.
It is characterised in that the central unit is connected to all the opening points by means of a single common line (8) with two conductors (31, 32), in that the central unit comprises at least one periodic-signal generator (28) connected to the said two conductors, in that each opening point comprises a passive receiver circuit tuned to the frequency of the periodic signal supplied by the said generator (28) of the central unit, the said passive circuit being connected in series with the closure contact of the said opening point, and in that the said device comprises, furthermore, means for signalling a closure fault which are sensitive to the variations of the signal generated by the generator in response to the actuation of the corresponding closure contact.
Description
2043~31 The present invention relates to a device for monitoring the closure of the ope~ing points of a motor vehicle. It is inten~e~ for monitoring the state of ~ closure of the locks of doors, the t~k and other protected-access devices, such as the petrol flap, glove box, etc.
At the present time, a closure contact is asso-ciated with each of the opening points to be monitored, and when this op~ing point is open or improperly closed this closure contact is actuated and sends a signal to a central unit which is arranged on the dashboard and which comprises visual-alarm devices, each associated with an opening point, in such a way that, when ignition contact is made, the driver is warned that, for example, a door is improperly closed.
This monitoring device requires a line for each oreni ng point monitored, in order to send the above-mentioned signal to the central unit; the result of this i9 that the latter receives a line for each opening point monitored; this line can be bifilar or can comprise only a single wire if the return is made via earth. At all events, the monitoring of the state of closure of the opening points requires the wiring of a line between each of the accesses and the central unit which can therefore receive, for example, five or six conductors, each corresponding to an open i ng point.
Now the operations for the electrical wiring of a motor vehicle are difficult and continue to be expen-sive.
The ob~ect of the invention is, therefore, to provide a device for monitoring the closure of the opening points of a motor vehicle which makes it possible ~ to reduce~the number of conductors necessary for the connection between the opening points and the central monitoring unit and also to reduce the total length of the conductors used.
The sub~ect of the invention is a device for monitoring the closure of the openi ng points of a motor vehicle, in which each op9n i ng point is equipped with a~
closure contact which is connected to a central unit, characterised in that the central unit is connected to all the ope~i~g points by means of a single common line with two conductors, in that the central unit comprises at least one periodic-signal generator connected to the said two conductors, in that each opening point comprises a pas~ive receiver circuit tuned to the frequency of the periodic signal supplied by the said generator of the central unit, the said passive circuit being connected in series with the closure contact of the said opening point, and in that the said device comprises, further-more, mean~ for signalling a closure fault which are sen~itive to the variations of the signal generated by the generator in response to the actuation of the cor-responding closure contact.
According to one embodiment of the invention, thecentral unit comprise~ a single generator and the passive circuit consists of a vibrator; this vibrator can have a time delay, and in this case the central unit comprises a visual-alarm device.
According to another embodiment of the invention, each opening point comprises a series resonant circuit connected between the said conductors, the resonant frequency of the said re~onant circuit being specific to each op~ni ng point, the central unit comprises trap circuits connected to one of the said conductors, each trap circuit being associated with an opening point and being tuned to the re~onant frequency of the resonant circuit of the said openi~g point, and the central unit comprise~ a generator supplying signals at the various resonant frequencies of the abovementioned resonant-circuit/trap-circuit pairs.
The invention will be ~etter ~ Lood frcm the following description given solely by way of example and made with reference to the accompanying drawings in which:
- Figure 1 is a block diagram of an embodiment of the invention;
- Figure 2 is a diagram of the circuit located in 20~3~3i a front opening point;
- Figure 3 is a block diagram of the central control unit;
- Figures 4 and 5 are detailed diagrams of the s central control unit;
- Figure 6 is a graph explaining Figure 5.
Figure 1 is a general block diagram of a device according to the invention, which essentially comprises a central control unit 1 int~n~e~ for controlling the "desecuring", "securing" or "supersecuring" of opening points, such as front doors 2, rear doors 3 and a tailgate 4. A central control unit can receive conmands provided by the mechanism of the ignition key 5, by a remote-control receiver 6 or by an anti-attack button.
The two front doors 2 are equipped with a key lock 7 which is fitted with electrical contacts supplying electrical signals to the central control unit 1 for the purpose of "desecuring", "securing- or "supersecuring' the opening points.
The structure of the various elements of this diagram is such that the connection between the central control unit 1 and the various opening points i8 made simply by means of a line 8 with three conductors 31, 32, 33 which constitutes a kind of bus ~unction between the central control unit 1 and the opening points, each of these being connected in parallel to the line 8.
Figure 2 is an electrical diagram of the circuit contA~n~A in an open~ng point, such as a front door. This circuit comprises essentially three conductors 11, 12, 13, each connected to one of the conductors of the line 8 (the key control can take place, for example, between 11 and 12).
Each open i ng point comprises a triple-effect electrical actuator, for example two direct-current motors Ml and M2; the motor Nl controls the "securing" or "desecuring" of the opening point and the motor M2 controls the "supersecuring" or "desecuring~ of the lock.
In the "supersecuring" position, the door cannot be opened by using the mechanical control elements of the door, namely a lever or pusher, but only by an electrical command provided as a result of the insertion of a coded key into the lock 7 or by a remote command received by the detector 6.
According to the invention, for each actuator, the motors Ml and M2 are connected permanently between the three conductor~ 11, 12 and 13. In the example illustrated, the motor Ml is connected between the conductor 13 and the conductor 12. The second motor M2 is likewise connected between the conductors 13 and 12. On this conductor 12, a diode Dl separates the terminals of the motors Ml and M2, the cathode of Dl being connected to M2. Moreover, the terminal of M2 joined to the conductor 12 i~ exten~le~1 on the conduc-lS tor 11 by a diode D2, the cathode of which i8 connected to this conductor 11. The control takes place between the conductors 11 and 12. Branched off from the conductor 11 is an assembly of three electronic components, in the example illustrated Zener diodes 14 connected in series.
From the anodes of these Zener diodes, three terminals are defined for a switch.
The other conductor 12 i~ connected to the common terminal of a three-position switch 15 by means of a diode 16, the cathode of which i8 connected to the conductor 12. The function of the diode 16 is to prevent a power current from passing through the Zener diodes if a key request occurs during a power transfer for "super-securing". This three-position switch consists, in fact, of the coded key inserted in the lock 7; the three possible positions of the lock key lS correspond to the abovementioned three states, namely "desecuring', "secu-ring' and "supersecuring". This switch closes a circuit via one or more Zener diodes according to the particular request.
Finally, a resonant circuit consisting of a coil 17 and a capacitor 18 is connected between the two conductors 11 and 12, with the interposition of a con-tact 19 which corresponds to the open-door contactor O.D.C. and which is closed when the door is open or _ 5 _ 204~431 improperly closed.
The electrical circuit integrated in the other opening point~, such as the rear door~ or the tailgate, does not include the elements 14 to 16 corresponding to the key lock 7.
Figure 3 shows the circuit of the central control unit in simplified form. The line 8 is connected to three input~ 21, 22 and 23 which correspond respectively to the conductor~ 11, 12 and 13 of each of the openi~g points.
Each of these inputs i8 connected to the contact of a respective control relay Bl, B2 and B3, these being shown in the state of rest. The coils of the relays Bl, B2 and B3 are controlled by a mic~opLocessor 20, as will be described in detail later. In the state of rest cor-responding to the vehicle left unatten~, the termi-nal 23 corre~ponding to the conductor 33 of the line 8 and the terminal 22 corresponding to the conductor 32 of the line 8 are connected to the negative terminal 24 of the supply battery of the vehicle. When the relays B2 and B3 are energised into the working position, the ter-minal~ 22 and 23 are connected to the po~itive termi-nal 25 of the vehicle battery.
When the relay Bl is energised, the terminal 21 corresponding to the conductor 31 of the line 8 i~
connected to the negative terminal 24 of the battery. In the position of rest, the terminal 21 i~ connected to a measuring detector 26 which supplies information to the miclGp ocessor 20. This terminal 21 i~ biased at the positive voltage by a resi~tor 10 which is connected to the conductor 21 by means of the break contact 27 of the relay Bl and of the make contact of a switch 30' cont-rolled as a result of the actuation of the ignition key.
Moreover, when the vehicle i~ being used, with the ignition key inserted, the break contact 27 of the relay Bl can also be connected to an alternating-current generator 28 either by means of trap circuits connected in serie~ or by means of a re~i~tor, in which ca~e the string of trap circuits can be connected in parallel between 12 and 13 or omitted. Each of these trap circuit~
tuned to the resonant frequency of the resonant circuit 17, 18 of one of the opening points. An alarm device, such as an indicator lamp 29, is connected in parallel to each of the resonant circuits. This indicator lamp can consist, for example, of a light-emitting diode.
The putting into operation of the generator 28 iB
controlled by a signal occurring as a result of the closure of a contact 30 which is closed by the ignition key of the vehicle and which corresponds to the circuit 5 of Figure 1.
The microprocessor 20 also receives information from the contact 30 on the insertion of the ignition key of the vehicle. It also receives information by means of an anti-attack contact 34 which can be closed by the user lS when he is in the vehicle. Finally, the microprocessor 20 receives a "securing", "supersecuring~ or "desecurin~
command provided by means of a contact 35 associated with the remote-control detector 6.
Figure 4 i8 a detailed diagram representing the detector circuit 26. The signal coming from the measuring conductor 31 is sent to three operational amplifiers 41, 42 and 43 which, on the other hand, each receives a nominal value matched to the voltages of the Zener diodes 14.
In the example illustrated, these reference signals are respectively equally to 2, 4 and 6 volts. The signal supplied by the first operational amplifier 41 is sent to an AND gate 44 with three inputs, the other two inputs of which receive a positive voltage corresponding to the logical state 1. The output of the logical AND
gate 44 is sent to a monostable multivibrator 45, the output of which supplies a first command signal.
The output of the second operational amplifier is sent to a logical AND circuit 46 with three inputs; the second input of this circuit receives the output signal from the operational amplifier 43 and the third input of this circuit receives the inverted output signal from the comparator 41, the inversion being carried out by an inverting gate 47. The output of this logica' AND
circuit 46 controls the second monostable multivibrator 48, the output of which likewise supplie~
a command 8 ignal.
The output of the operational amplifier 43 is sent to a logical AND circuit 49 with three inputs, the other three inputs of which receive respectively the inverted output signal of the operational amplifier 41 and the inverted output signal of the operational ampli-fier 42 by means of an inverting gate 51. The output of the logical AND circuit 49 controls a third monostable multivibrator 52, the output of which likewise supplies a command signal.
Figure 5 is a diagram showing the generator 28 in detail. It consist~ essentially of four multi-vibrators 61, 62, 63 and 64 which are connected in series so as to for~ a ring counter; Figure 6 is a timing diagram respectively representing the cloc)~ signal sent to each of the multivibrators and their output Q.
The output signal Q of each of the multivibrators controls a transistor 65 which forms a swi.tch- arranged between the direct-voltage source and the feed wire of each periodic-signal generator 71, 72, 73 and 74. The output of each of these generators is sent to the conduc-tor 36 of Figure 3 upstream Df the trap circuits.
The frequencies of the signal~ supplied by generators 71 to 74 correspond respectively to the resonant frequencies of each of the resonant circuit assemblies 17, 18 of the gate circuit and corre~ponding trap circuit of the central control unit.
T~e device which has ~ust been described func-tions as follow~. When the door key is inserted into the lock 7, this key can assume the three positions of the switch 15. The voltage of the Zener diodes 14 is selected 80 as to be slightly below the tr~erin~ threshold of the comparators 41 to 43;
thus, if a Zener ~ol~age slightly below 2 volts is selected, the tri~ring of the comparators 41, 42 and 43 will be obt~in~ when only one of the Zener diodes 14 is connected by the switch 15, thetri~ering of the - 8 - 20~ 3~31 - comparators 41, 42 and 43 will be obtained when only one of the Zener diodes 14 ls connected by the switch lS, the trlf~ring of the comparators i2 and 43 when two diode~ are connected and the triggering of ~he comparator 43 when the throo Zonor dlodos 14 nro connoctod by tho nwltch 15.
parators 42 and 4~ ~hen two diode~ are connected and the of the comparator 43 when the three Zener diodes 14 are connected by the switch 15.
In the absence of a request by the key in the lock 7, the voltage read off by the detector 26 i-Y the battery voltage which is sent from the terminal 25 via the resistor 10.
If this voltage is higher than the maximum threshold of 6V, none of the comparators 41 to 43 changes from the logical value "0" to the logical value "1". No command is sent to the coils of the relays Bl, B2 and B3.
If the key is inserted into the lock 7 and actuated in the "desecuring" direction, the contact corresponds to the connection of the three Zener diodes 14 in serie~ and only the comparator 43 supplies a logical "1" at its output, thereby unblocking the logical AND gate 49 which changes to 1 and which acti~ates ~e multivibra~r ~2 whicll provides a command for activating the coil of the relay B2. The effect of this is to apply the positive supply voltage to the conductor 32 of the bundle 8 and conse-quently to the control line 12. The motor M1 and the motor M2 by means of the diode Dl are tnen fed in the desecuring" direction in each of the doors controlled by the central control unit.
If the door key is actuated in the "securing"
direction, there are two positions, the first correspond-ing to the normal "securing" of the doors and the second two ~'supersecuring'. These two po~itions can be two successive positions of the key or the ~econd position can correspond to keeping the key in the "securing"
position for a given time.
If the door key is actuated to obtain "securing", the position corresponding to two diodes 14 in series is obtained and the two comparators 42 and 43 change to the logical state "1"; the inverter 51 blocks the AND gate 49 and only the gate 46 changes to the logical state "1", thereby activating the multivibrator 48 which controls the supply to the coil of the relay ~3. The result of thi8 i8 that the motor M1 i8 fed in the opposite dlrec-201343i tion to the ~desecuring" direction. The motor ~2 i~ not actuated because its two terminals are connected to the sam~ positive ~upply potential and Dl oppo~e~ the passage of the current towards 32.
Finally, if the key changes to the 'super-securing" position, only the first Zener diode 14 is connected to the meaauring circuit and the compara-tors 41, 42, 43 change to the logical state "1". The output of the comparator 41 blocks the gates 46 and 49 by means of the inverting circuit~ 47 and 51. The result of thi~ is that only the gate 44 is unblocked, thereby actuating the multivibrator 45 which controls the supply to the coil of the relays Bl and B3. In this case, the po~itive voltage is applied to the conductor 13, the other conductors being connected to the negative ter-minal; the motor Ml is actuated in the "securing" direc-tion and the motor M2 is likewise actuated in the "secur-ing" direction, the assembly as a whole constituting n supersecuring".
The diodes Dl and D2 make it possible to isolate or select M2 according to the pluralities applied to the three conductors, this allowing it to be put at rest in the event of a simple "securing" request where Ml alone is activated.
Should there be two simultaneous key requests, the lowest Zener voltage has priority, thus determining priority in the event of two simultaneous different key requests. In the example given, the "supersecuring"
request corresponding to the lowest Zener voltage has priority over the other commands. The same i~ true of the "securing" command which has priority over a "de~ecuring"
command. Thi~ i8 a choice which can be changed as desi-red. This and protections on the mono~table multivibra-tors prevent the tran~mission of two simultaneous dif-ferent commands.
The Zener diodes 14 can be replaced by other electronic components dividing a voltage applied to the terminals of the two conductors. It will be possible, for example, to use three resistors of different values connected in parallel between the conductor 11 and the moveable contact of the switch 15, each resistor forming a voltage divider bridge with the resi~tor 10, the free ends of the re~i~tor~ constituting three contact studs of the switch.
The microprocessor 20 can also be controlled by mean~ of the remote control represented diagrammatically by the contact 35 which supplies "desecuring" or "secu-ring" information to the microprocessor 20.
The device according to the invention al~o comprises an anti-attack device represented diagrammati-cally by the contact 34 which i8 actuated by the occupant of the vehicle when he is inside and which likewise transmits "securing" command information to the micro-proce~sor 20.
The microprocessor 20 al~o receives information relating to the ignition key of the vehicle (contact 30).
The information provided a~ a re~ult of the actuation of the ignition key of the vehicle allows the actuation of the anti-attack device and inhibits the remote control.
Furthermore, the actuation of the vehicle ignition key control~ the monitoring procedure for the door contacts by activating the generator 28 which therefore operate~
only when the ignition key i~ in the active position.
This position cancels the po~itive direct voltage applied to the control conductor 21 which is thus sub~ected to the periodic signals supplied by the generator 28.
Should a door "securing" or "desecuring" command be transmitted during this monitoring a~ a result of the actuation of the anti-attack device, the monitoring is interrupted for a brief moment by the microprocessor 20 80 as to execute the c~rd.
The monitoring of the state of closure of the door~ i8 carried out by using two conductors only, namely the conductors 31 and 32.
As can be seen by referring to Figures 5 and 6, the generator supplie~ a train of pulse~ of different frequencies which correspond respectively to the resonant frequencies of the resonant-circuit/trap-circuit pairs of the central control unit and of each door.
If one of the door contacts 19 is closed, the current circulates via the two conductors 11 and 12, there is a drop of impedance of the resonant circuit to the resonant frequency of the door in que~tion, and the result of this is that the voltage of the ter~inAls of the corre~ponding trap circuit of the central control unit a~sumes a high value, thereby actuating the alarm consisting, for example, of the indicator lamp 29 which flashes at the cyclic frequency of the generator 28.
According to another ~mh ~ i ~ nt o~ the invention, the generator 28 supplies a complex voltage comprising a plurality of equal voltages, the frequencies of which correspond to the frequencies of the resonant circuits.
In thi~ case, a summing circuit can be u~ed to ~end all the frequencies to the conductor 11. In this instance, the four signal generators are fed ~ontinuously and the ring counte~ is no lon~er used.
It can be seen that, when the vehicle is at a standstill (ignition contact not made), a positive voltage is applied to the control conductor 11, 21, 31, and even if a door is improperly closed, with the contact 19 closed, no current will circulate in the two control conductor~ 11 and 12 becau~e the capacitor of the resonant circuit of the improperly closed door forms a direct-currentswitch.
According to another e~odi ~ t of the invention, single-frequency generator is provided in the central control unit only, and in each door the series resonant circuit is replaced by a vibrator operating at the frequency supplied by the generator of the central control unit.
This Pnh~;m~nt makes it p~ss;hle to limit t h e space reguired on the ~cht~.d by numerous indi`cator 1 a m p s, However, a single indicator lamp constituting a permanent alarm can be provided, whilst the operation of the vibrator h~s a, t~Tle delay and the sound signal ceases after a particular time.
To prevent current consumption when ignition contact is not made and a positive direct voltage i~ sent to the first control conductor 11, a capacitor can be arranged in series with each of the vibrators. Since the indicator of an improperly closed door i8 in the door itself, the attention of the occupants i~ drawn to it much more quickly, above all where rear doors are con-cerned.
According to another esr ~ t of the invention , the trap circuits are omitted and the generator 28 permanently sends trains of periodic waves of different frequencie~ cyclically. These signals pass through a resistor arranged in serie~ with the generator 28 in the central unit. Together with the impedance of the resonant circuits, thi~ resistor performs the function of a lS voltage divider bridge; the amplitude of each of the signals passing through it can be seen at its terminal ad~acent to the conductor 21. In the absence of an improperly clo~ed door, the amplitude of the signal at the abovementioned terminal i~ that of the signal trans-mitted by the generator 28. As soon as the door con-tact 19 closes, this amplitude drops in the manner of a voltage divider bridge for the signal to the resonant frequency of the improperly closed door. An alarm is triggered as ~oon as this variation in voltaqe amplitude is detected. Since any signal at a given frequency is transmitted periodically for 1/4 of a period as a result of the feeding of the system by the ring counter (see Fig. S), in the event of a voltage drop it i~ known exactly which door i~ involved since a door is sensitive to it~ natural frequency and not to the other frequencie~
transmitted for the other door~ during the remaining 3/4 of a period. The period i~ divided into as many portions as there are doors to be monitored (4 here in the example given).
According to another ~ dil~ t o~ t~e im~ention, i~t is also po~sible to arrange the series of trap circuits in parallel between the two conductors 21 and 22 in the central unit, that is to say between the output 36 of the generator connected to the conductor 21 and the negative _ 13 -polarity of the battery connected to the conductor 22.
The generator 28 permanently sends the tra~ns of periodic waves at the different frequencies cyclically by way of a resistor. When its natural frequency is received, each s trap circuit has a high impe~nce. As soon as the door contact 19 of the corresponding resonant circuit is closed, the impedance of the terminals of the said trap circuit drops, and the same is true of the voltage at its terminals. An alarm is triggered as soon as this voltage drop is detected.
It can be seen that the invention, by using only three connecting conductors forming a bus between the central control unit and each of the opening points, makes it possible to control in a centralised manner the lS opening, securing" and even a "supersecuring" of the doors and to send from each of the doors the necessary commands provided by the door key.
Another advantage of the invention is that only passive elements are accommodated in the doors, this being important from the point of view of cost and reliability.
Moreover, two of these conductors are sufficient to carry out the monitoring of the ~tate of closure of all the openi~g points, with the improperly closed door indicated each time.
The invention also applies to opening points comprising a double-effect actuator, such as opening points without~ "supersecuring" (luggage boot, petrol flap, etc.). In this case, if the actuator is a rever-sible motor, it will be connected permanently between twoconductors.
At the present time, a closure contact is asso-ciated with each of the opening points to be monitored, and when this op~ing point is open or improperly closed this closure contact is actuated and sends a signal to a central unit which is arranged on the dashboard and which comprises visual-alarm devices, each associated with an opening point, in such a way that, when ignition contact is made, the driver is warned that, for example, a door is improperly closed.
This monitoring device requires a line for each oreni ng point monitored, in order to send the above-mentioned signal to the central unit; the result of this i9 that the latter receives a line for each opening point monitored; this line can be bifilar or can comprise only a single wire if the return is made via earth. At all events, the monitoring of the state of closure of the opening points requires the wiring of a line between each of the accesses and the central unit which can therefore receive, for example, five or six conductors, each corresponding to an open i ng point.
Now the operations for the electrical wiring of a motor vehicle are difficult and continue to be expen-sive.
The ob~ect of the invention is, therefore, to provide a device for monitoring the closure of the opening points of a motor vehicle which makes it possible ~ to reduce~the number of conductors necessary for the connection between the opening points and the central monitoring unit and also to reduce the total length of the conductors used.
The sub~ect of the invention is a device for monitoring the closure of the openi ng points of a motor vehicle, in which each op9n i ng point is equipped with a~
closure contact which is connected to a central unit, characterised in that the central unit is connected to all the ope~i~g points by means of a single common line with two conductors, in that the central unit comprises at least one periodic-signal generator connected to the said two conductors, in that each opening point comprises a pas~ive receiver circuit tuned to the frequency of the periodic signal supplied by the said generator of the central unit, the said passive circuit being connected in series with the closure contact of the said opening point, and in that the said device comprises, further-more, mean~ for signalling a closure fault which are sen~itive to the variations of the signal generated by the generator in response to the actuation of the cor-responding closure contact.
According to one embodiment of the invention, thecentral unit comprise~ a single generator and the passive circuit consists of a vibrator; this vibrator can have a time delay, and in this case the central unit comprises a visual-alarm device.
According to another embodiment of the invention, each opening point comprises a series resonant circuit connected between the said conductors, the resonant frequency of the said re~onant circuit being specific to each op~ni ng point, the central unit comprises trap circuits connected to one of the said conductors, each trap circuit being associated with an opening point and being tuned to the re~onant frequency of the resonant circuit of the said openi~g point, and the central unit comprise~ a generator supplying signals at the various resonant frequencies of the abovementioned resonant-circuit/trap-circuit pairs.
The invention will be ~etter ~ Lood frcm the following description given solely by way of example and made with reference to the accompanying drawings in which:
- Figure 1 is a block diagram of an embodiment of the invention;
- Figure 2 is a diagram of the circuit located in 20~3~3i a front opening point;
- Figure 3 is a block diagram of the central control unit;
- Figures 4 and 5 are detailed diagrams of the s central control unit;
- Figure 6 is a graph explaining Figure 5.
Figure 1 is a general block diagram of a device according to the invention, which essentially comprises a central control unit 1 int~n~e~ for controlling the "desecuring", "securing" or "supersecuring" of opening points, such as front doors 2, rear doors 3 and a tailgate 4. A central control unit can receive conmands provided by the mechanism of the ignition key 5, by a remote-control receiver 6 or by an anti-attack button.
The two front doors 2 are equipped with a key lock 7 which is fitted with electrical contacts supplying electrical signals to the central control unit 1 for the purpose of "desecuring", "securing- or "supersecuring' the opening points.
The structure of the various elements of this diagram is such that the connection between the central control unit 1 and the various opening points i8 made simply by means of a line 8 with three conductors 31, 32, 33 which constitutes a kind of bus ~unction between the central control unit 1 and the opening points, each of these being connected in parallel to the line 8.
Figure 2 is an electrical diagram of the circuit contA~n~A in an open~ng point, such as a front door. This circuit comprises essentially three conductors 11, 12, 13, each connected to one of the conductors of the line 8 (the key control can take place, for example, between 11 and 12).
Each open i ng point comprises a triple-effect electrical actuator, for example two direct-current motors Ml and M2; the motor Nl controls the "securing" or "desecuring" of the opening point and the motor M2 controls the "supersecuring" or "desecuring~ of the lock.
In the "supersecuring" position, the door cannot be opened by using the mechanical control elements of the door, namely a lever or pusher, but only by an electrical command provided as a result of the insertion of a coded key into the lock 7 or by a remote command received by the detector 6.
According to the invention, for each actuator, the motors Ml and M2 are connected permanently between the three conductor~ 11, 12 and 13. In the example illustrated, the motor Ml is connected between the conductor 13 and the conductor 12. The second motor M2 is likewise connected between the conductors 13 and 12. On this conductor 12, a diode Dl separates the terminals of the motors Ml and M2, the cathode of Dl being connected to M2. Moreover, the terminal of M2 joined to the conductor 12 i~ exten~le~1 on the conduc-lS tor 11 by a diode D2, the cathode of which i8 connected to this conductor 11. The control takes place between the conductors 11 and 12. Branched off from the conductor 11 is an assembly of three electronic components, in the example illustrated Zener diodes 14 connected in series.
From the anodes of these Zener diodes, three terminals are defined for a switch.
The other conductor 12 i~ connected to the common terminal of a three-position switch 15 by means of a diode 16, the cathode of which i8 connected to the conductor 12. The function of the diode 16 is to prevent a power current from passing through the Zener diodes if a key request occurs during a power transfer for "super-securing". This three-position switch consists, in fact, of the coded key inserted in the lock 7; the three possible positions of the lock key lS correspond to the abovementioned three states, namely "desecuring', "secu-ring' and "supersecuring". This switch closes a circuit via one or more Zener diodes according to the particular request.
Finally, a resonant circuit consisting of a coil 17 and a capacitor 18 is connected between the two conductors 11 and 12, with the interposition of a con-tact 19 which corresponds to the open-door contactor O.D.C. and which is closed when the door is open or _ 5 _ 204~431 improperly closed.
The electrical circuit integrated in the other opening point~, such as the rear door~ or the tailgate, does not include the elements 14 to 16 corresponding to the key lock 7.
Figure 3 shows the circuit of the central control unit in simplified form. The line 8 is connected to three input~ 21, 22 and 23 which correspond respectively to the conductor~ 11, 12 and 13 of each of the openi~g points.
Each of these inputs i8 connected to the contact of a respective control relay Bl, B2 and B3, these being shown in the state of rest. The coils of the relays Bl, B2 and B3 are controlled by a mic~opLocessor 20, as will be described in detail later. In the state of rest cor-responding to the vehicle left unatten~, the termi-nal 23 corre~ponding to the conductor 33 of the line 8 and the terminal 22 corresponding to the conductor 32 of the line 8 are connected to the negative terminal 24 of the supply battery of the vehicle. When the relays B2 and B3 are energised into the working position, the ter-minal~ 22 and 23 are connected to the po~itive termi-nal 25 of the vehicle battery.
When the relay Bl is energised, the terminal 21 corresponding to the conductor 31 of the line 8 i~
connected to the negative terminal 24 of the battery. In the position of rest, the terminal 21 i~ connected to a measuring detector 26 which supplies information to the miclGp ocessor 20. This terminal 21 i~ biased at the positive voltage by a resi~tor 10 which is connected to the conductor 21 by means of the break contact 27 of the relay Bl and of the make contact of a switch 30' cont-rolled as a result of the actuation of the ignition key.
Moreover, when the vehicle i~ being used, with the ignition key inserted, the break contact 27 of the relay Bl can also be connected to an alternating-current generator 28 either by means of trap circuits connected in serie~ or by means of a re~i~tor, in which ca~e the string of trap circuits can be connected in parallel between 12 and 13 or omitted. Each of these trap circuit~
tuned to the resonant frequency of the resonant circuit 17, 18 of one of the opening points. An alarm device, such as an indicator lamp 29, is connected in parallel to each of the resonant circuits. This indicator lamp can consist, for example, of a light-emitting diode.
The putting into operation of the generator 28 iB
controlled by a signal occurring as a result of the closure of a contact 30 which is closed by the ignition key of the vehicle and which corresponds to the circuit 5 of Figure 1.
The microprocessor 20 also receives information from the contact 30 on the insertion of the ignition key of the vehicle. It also receives information by means of an anti-attack contact 34 which can be closed by the user lS when he is in the vehicle. Finally, the microprocessor 20 receives a "securing", "supersecuring~ or "desecurin~
command provided by means of a contact 35 associated with the remote-control detector 6.
Figure 4 i8 a detailed diagram representing the detector circuit 26. The signal coming from the measuring conductor 31 is sent to three operational amplifiers 41, 42 and 43 which, on the other hand, each receives a nominal value matched to the voltages of the Zener diodes 14.
In the example illustrated, these reference signals are respectively equally to 2, 4 and 6 volts. The signal supplied by the first operational amplifier 41 is sent to an AND gate 44 with three inputs, the other two inputs of which receive a positive voltage corresponding to the logical state 1. The output of the logical AND
gate 44 is sent to a monostable multivibrator 45, the output of which supplies a first command signal.
The output of the second operational amplifier is sent to a logical AND circuit 46 with three inputs; the second input of this circuit receives the output signal from the operational amplifier 43 and the third input of this circuit receives the inverted output signal from the comparator 41, the inversion being carried out by an inverting gate 47. The output of this logica' AND
circuit 46 controls the second monostable multivibrator 48, the output of which likewise supplie~
a command 8 ignal.
The output of the operational amplifier 43 is sent to a logical AND circuit 49 with three inputs, the other three inputs of which receive respectively the inverted output signal of the operational amplifier 41 and the inverted output signal of the operational ampli-fier 42 by means of an inverting gate 51. The output of the logical AND circuit 49 controls a third monostable multivibrator 52, the output of which likewise supplies a command signal.
Figure 5 is a diagram showing the generator 28 in detail. It consist~ essentially of four multi-vibrators 61, 62, 63 and 64 which are connected in series so as to for~ a ring counter; Figure 6 is a timing diagram respectively representing the cloc)~ signal sent to each of the multivibrators and their output Q.
The output signal Q of each of the multivibrators controls a transistor 65 which forms a swi.tch- arranged between the direct-voltage source and the feed wire of each periodic-signal generator 71, 72, 73 and 74. The output of each of these generators is sent to the conduc-tor 36 of Figure 3 upstream Df the trap circuits.
The frequencies of the signal~ supplied by generators 71 to 74 correspond respectively to the resonant frequencies of each of the resonant circuit assemblies 17, 18 of the gate circuit and corre~ponding trap circuit of the central control unit.
T~e device which has ~ust been described func-tions as follow~. When the door key is inserted into the lock 7, this key can assume the three positions of the switch 15. The voltage of the Zener diodes 14 is selected 80 as to be slightly below the tr~erin~ threshold of the comparators 41 to 43;
thus, if a Zener ~ol~age slightly below 2 volts is selected, the tri~ring of the comparators 41, 42 and 43 will be obt~in~ when only one of the Zener diodes 14 is connected by the switch 15, thetri~ering of the - 8 - 20~ 3~31 - comparators 41, 42 and 43 will be obtained when only one of the Zener diodes 14 ls connected by the switch lS, the trlf~ring of the comparators i2 and 43 when two diode~ are connected and the triggering of ~he comparator 43 when the throo Zonor dlodos 14 nro connoctod by tho nwltch 15.
parators 42 and 4~ ~hen two diode~ are connected and the of the comparator 43 when the three Zener diodes 14 are connected by the switch 15.
In the absence of a request by the key in the lock 7, the voltage read off by the detector 26 i-Y the battery voltage which is sent from the terminal 25 via the resistor 10.
If this voltage is higher than the maximum threshold of 6V, none of the comparators 41 to 43 changes from the logical value "0" to the logical value "1". No command is sent to the coils of the relays Bl, B2 and B3.
If the key is inserted into the lock 7 and actuated in the "desecuring" direction, the contact corresponds to the connection of the three Zener diodes 14 in serie~ and only the comparator 43 supplies a logical "1" at its output, thereby unblocking the logical AND gate 49 which changes to 1 and which acti~ates ~e multivibra~r ~2 whicll provides a command for activating the coil of the relay B2. The effect of this is to apply the positive supply voltage to the conductor 32 of the bundle 8 and conse-quently to the control line 12. The motor M1 and the motor M2 by means of the diode Dl are tnen fed in the desecuring" direction in each of the doors controlled by the central control unit.
If the door key is actuated in the "securing"
direction, there are two positions, the first correspond-ing to the normal "securing" of the doors and the second two ~'supersecuring'. These two po~itions can be two successive positions of the key or the ~econd position can correspond to keeping the key in the "securing"
position for a given time.
If the door key is actuated to obtain "securing", the position corresponding to two diodes 14 in series is obtained and the two comparators 42 and 43 change to the logical state "1"; the inverter 51 blocks the AND gate 49 and only the gate 46 changes to the logical state "1", thereby activating the multivibrator 48 which controls the supply to the coil of the relay ~3. The result of thi8 i8 that the motor M1 i8 fed in the opposite dlrec-201343i tion to the ~desecuring" direction. The motor ~2 i~ not actuated because its two terminals are connected to the sam~ positive ~upply potential and Dl oppo~e~ the passage of the current towards 32.
Finally, if the key changes to the 'super-securing" position, only the first Zener diode 14 is connected to the meaauring circuit and the compara-tors 41, 42, 43 change to the logical state "1". The output of the comparator 41 blocks the gates 46 and 49 by means of the inverting circuit~ 47 and 51. The result of thi~ is that only the gate 44 is unblocked, thereby actuating the multivibrator 45 which controls the supply to the coil of the relays Bl and B3. In this case, the po~itive voltage is applied to the conductor 13, the other conductors being connected to the negative ter-minal; the motor Ml is actuated in the "securing" direc-tion and the motor M2 is likewise actuated in the "secur-ing" direction, the assembly as a whole constituting n supersecuring".
The diodes Dl and D2 make it possible to isolate or select M2 according to the pluralities applied to the three conductors, this allowing it to be put at rest in the event of a simple "securing" request where Ml alone is activated.
Should there be two simultaneous key requests, the lowest Zener voltage has priority, thus determining priority in the event of two simultaneous different key requests. In the example given, the "supersecuring"
request corresponding to the lowest Zener voltage has priority over the other commands. The same i~ true of the "securing" command which has priority over a "de~ecuring"
command. Thi~ i8 a choice which can be changed as desi-red. This and protections on the mono~table multivibra-tors prevent the tran~mission of two simultaneous dif-ferent commands.
The Zener diodes 14 can be replaced by other electronic components dividing a voltage applied to the terminals of the two conductors. It will be possible, for example, to use three resistors of different values connected in parallel between the conductor 11 and the moveable contact of the switch 15, each resistor forming a voltage divider bridge with the resi~tor 10, the free ends of the re~i~tor~ constituting three contact studs of the switch.
The microprocessor 20 can also be controlled by mean~ of the remote control represented diagrammatically by the contact 35 which supplies "desecuring" or "secu-ring" information to the microprocessor 20.
The device according to the invention al~o comprises an anti-attack device represented diagrammati-cally by the contact 34 which i8 actuated by the occupant of the vehicle when he is inside and which likewise transmits "securing" command information to the micro-proce~sor 20.
The microprocessor 20 al~o receives information relating to the ignition key of the vehicle (contact 30).
The information provided a~ a re~ult of the actuation of the ignition key of the vehicle allows the actuation of the anti-attack device and inhibits the remote control.
Furthermore, the actuation of the vehicle ignition key control~ the monitoring procedure for the door contacts by activating the generator 28 which therefore operate~
only when the ignition key i~ in the active position.
This position cancels the po~itive direct voltage applied to the control conductor 21 which is thus sub~ected to the periodic signals supplied by the generator 28.
Should a door "securing" or "desecuring" command be transmitted during this monitoring a~ a result of the actuation of the anti-attack device, the monitoring is interrupted for a brief moment by the microprocessor 20 80 as to execute the c~rd.
The monitoring of the state of closure of the door~ i8 carried out by using two conductors only, namely the conductors 31 and 32.
As can be seen by referring to Figures 5 and 6, the generator supplie~ a train of pulse~ of different frequencies which correspond respectively to the resonant frequencies of the resonant-circuit/trap-circuit pairs of the central control unit and of each door.
If one of the door contacts 19 is closed, the current circulates via the two conductors 11 and 12, there is a drop of impedance of the resonant circuit to the resonant frequency of the door in que~tion, and the result of this is that the voltage of the ter~inAls of the corre~ponding trap circuit of the central control unit a~sumes a high value, thereby actuating the alarm consisting, for example, of the indicator lamp 29 which flashes at the cyclic frequency of the generator 28.
According to another ~mh ~ i ~ nt o~ the invention, the generator 28 supplies a complex voltage comprising a plurality of equal voltages, the frequencies of which correspond to the frequencies of the resonant circuits.
In thi~ case, a summing circuit can be u~ed to ~end all the frequencies to the conductor 11. In this instance, the four signal generators are fed ~ontinuously and the ring counte~ is no lon~er used.
It can be seen that, when the vehicle is at a standstill (ignition contact not made), a positive voltage is applied to the control conductor 11, 21, 31, and even if a door is improperly closed, with the contact 19 closed, no current will circulate in the two control conductor~ 11 and 12 becau~e the capacitor of the resonant circuit of the improperly closed door forms a direct-currentswitch.
According to another e~odi ~ t of the invention, single-frequency generator is provided in the central control unit only, and in each door the series resonant circuit is replaced by a vibrator operating at the frequency supplied by the generator of the central control unit.
This Pnh~;m~nt makes it p~ss;hle to limit t h e space reguired on the ~cht~.d by numerous indi`cator 1 a m p s, However, a single indicator lamp constituting a permanent alarm can be provided, whilst the operation of the vibrator h~s a, t~Tle delay and the sound signal ceases after a particular time.
To prevent current consumption when ignition contact is not made and a positive direct voltage i~ sent to the first control conductor 11, a capacitor can be arranged in series with each of the vibrators. Since the indicator of an improperly closed door i8 in the door itself, the attention of the occupants i~ drawn to it much more quickly, above all where rear doors are con-cerned.
According to another esr ~ t of the invention , the trap circuits are omitted and the generator 28 permanently sends trains of periodic waves of different frequencie~ cyclically. These signals pass through a resistor arranged in serie~ with the generator 28 in the central unit. Together with the impedance of the resonant circuits, thi~ resistor performs the function of a lS voltage divider bridge; the amplitude of each of the signals passing through it can be seen at its terminal ad~acent to the conductor 21. In the absence of an improperly clo~ed door, the amplitude of the signal at the abovementioned terminal i~ that of the signal trans-mitted by the generator 28. As soon as the door con-tact 19 closes, this amplitude drops in the manner of a voltage divider bridge for the signal to the resonant frequency of the improperly closed door. An alarm is triggered as ~oon as this variation in voltaqe amplitude is detected. Since any signal at a given frequency is transmitted periodically for 1/4 of a period as a result of the feeding of the system by the ring counter (see Fig. S), in the event of a voltage drop it i~ known exactly which door i~ involved since a door is sensitive to it~ natural frequency and not to the other frequencie~
transmitted for the other door~ during the remaining 3/4 of a period. The period i~ divided into as many portions as there are doors to be monitored (4 here in the example given).
According to another ~ dil~ t o~ t~e im~ention, i~t is also po~sible to arrange the series of trap circuits in parallel between the two conductors 21 and 22 in the central unit, that is to say between the output 36 of the generator connected to the conductor 21 and the negative _ 13 -polarity of the battery connected to the conductor 22.
The generator 28 permanently sends the tra~ns of periodic waves at the different frequencies cyclically by way of a resistor. When its natural frequency is received, each s trap circuit has a high impe~nce. As soon as the door contact 19 of the corresponding resonant circuit is closed, the impedance of the terminals of the said trap circuit drops, and the same is true of the voltage at its terminals. An alarm is triggered as soon as this voltage drop is detected.
It can be seen that the invention, by using only three connecting conductors forming a bus between the central control unit and each of the opening points, makes it possible to control in a centralised manner the lS opening, securing" and even a "supersecuring" of the doors and to send from each of the doors the necessary commands provided by the door key.
Another advantage of the invention is that only passive elements are accommodated in the doors, this being important from the point of view of cost and reliability.
Moreover, two of these conductors are sufficient to carry out the monitoring of the ~tate of closure of all the openi~g points, with the improperly closed door indicated each time.
The invention also applies to opening points comprising a double-effect actuator, such as opening points without~ "supersecuring" (luggage boot, petrol flap, etc.). In this case, if the actuator is a rever-sible motor, it will be connected permanently between twoconductors.
Claims (11)
1. Device for monitoring the closure of the opening points (2-4) of a motor vehicle, in which each opening point (2-4) is equipped with a closure contact (19) which is connected to a central unit (1), characterised in that the central unit (1) is connected to all the opening points (2-4) by means of a single common line (8) with two conductors (31, 32), in that the central unit (1) comprises at least one periodic-signal generator (28) connected to the said two conductors, in that each opening point (2-4) comprises a passive receiver circuit (17, 18) tuned to the frequency of the periodic signal supplied by the said generator (28) of the central unit (1), the said passive circuit being connected in series with the closure contact (19) of the said opening point, and in that the said device comprises, furthermore, means for signalling a closure fault which are sensitive to the variations of the signal generated by the generator in response to the actuation of the corresponding closure contact (19).
2. Monitoring device according to Claim 1, charac-terised in that the central unit (1) comprises a single generator, and in that the passive circuit consists of a vibrator.
3. Monitoring device according to Claim 2, charac-terised in that the vibrator has a time delay, and in that the central unit comprises a visual-alarm device.
4. Monitoring device according to Claim 1, charac-terised in that each opening point (2-4) comprises a resonant circuit (17, 18) connected between the said conductors (31, 32), the resonant frequency of the said resonant circuit (17, 18) being specific to each opening point (2-4), in that the central unit (1) comprises trap circuits connected to one of the said conductors (11), each trap circuit being associated with an opening point (2-4) and being tuned to the resonant frequency of the resonant circuit (17, 18) of the said opening point, and in that the central unit comprises a generator (28) supplying a cyclic wave train of signals at the various resonant frequencies of the abovementioned resonant-circuit/trap-circuit pairs.
5. Monitoring device according to Claim 4, charac-terised in that the generator (28) supplies a composite signal of all the resonant frequencies.
6. Monitoring device according to Claim 4, charac-terised in that the generator (28) supplies a sequence of signals, the frequencies of which are equal to the resonant frequencies of the abovementioned resonant-circuit/trap-circuit pairs.
7. Monitoring device according to Claim 5, charac-terised in that the trap circuits are connected in series between the generator (28) and one of the conductors (31).
8. Monitoring device a c c o r d i n g t o Claim 4 , characterised in that the signalling means consist of an alarm device (29) connected in parallel to each of the trap circuits of the central unit.
9. Monitoring device according to Claim 8, charac-terised in that the alarm device (29) is an indicator lamp.
10. Monitoring device according to Claim 1, charac-terised in that each opening point (2-4) comprises a resonant circuit (17, 18) connected between the said conductors (31, 32), the resonant frequency of the said resonant circuit (17, 18) being specific to each opening point (2-4), and in that the central unit (1) comprises a generator (28) supplying a cyclic wave train of signals of the various resonant frequencies of the abovementioned resonant circuits, a resistor being connected in series with the said generator (28).
11. Monitoring device according to Claim 1, charac-terised in that each opening point (2-4) comprises a resonant circuit (17, 18) connected between the said conductors (31, 32), the resonant frequency of the said resonant circuit (17, 18) being specific to each opening point (2-4), and in that the central unit (1) comprises trap circuits connected in parallel between the two conductors (31, 32), each trap circuit being associated with an opening point and being tuned to the resonant frequency of the resonant circuit (17, 18) of the said opening point, and in that the central unit comprises a generator (28) supplying a cyclic wave train of signals at the various resonant frequencies of the abovementioned resonant-circuit/trap-circuit pairs, a resistor being connected in series at the output of the said generator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9006936A FR2662733B1 (en) | 1990-06-05 | 1990-06-05 | DEVICE FOR MONITORING THE CLOSURE OF SUNS OF A MOTOR VEHICLE. |
| FR9006936 | 1990-06-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2043431A1 CA2043431A1 (en) | 1991-12-06 |
| CA2043431C true CA2043431C (en) | 1994-11-08 |
Family
ID=9397259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002043431A Expired - Fee Related CA2043431C (en) | 1990-06-05 | 1991-05-29 | Device for monitoring the closure of the opening points of a motor vehicle |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5250849A (en) |
| EP (1) | EP0460985B1 (en) |
| JP (1) | JPH06317054A (en) |
| BR (1) | BR9102298A (en) |
| CA (1) | CA2043431C (en) |
| DE (1) | DE69101178T2 (en) |
| ES (1) | ES2049533T3 (en) |
| FR (1) | FR2662733B1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2708027B1 (en) * | 1993-07-20 | 1995-10-06 | Peugeot | Centralized system for locking and unlocking the doors of a motor vehicle. |
| US5572098A (en) * | 1994-07-01 | 1996-11-05 | General Motors Corporation | Motor vehicle accessory control with control module having single power terminal |
| JP2975536B2 (en) * | 1994-08-01 | 1999-11-10 | 三井金属鉱業株式会社 | Control method of vehicle door lock device |
| USRE38400E1 (en) * | 1995-02-06 | 2004-01-27 | Daimlerchrysler Corporation | Control function-power operated lift gate |
| DE19530719A1 (en) * | 1995-08-18 | 1997-02-20 | Kiekert Ag | Operation of door lock electrical control system for vehicle with workshop mode |
| US5755126A (en) * | 1995-09-22 | 1998-05-26 | Lanigan; William P. | Security system for cargo loading doors |
| GB2309481A (en) * | 1996-01-29 | 1997-07-30 | John Phillip Chevalier | Central locking system with electronic control circuitry |
| FR2778980B1 (en) * | 1998-05-22 | 2001-04-20 | Valeo Securite Habitacle | ELECTROMECHANICAL DEVICE WITH POSITION SENSORS, PARTICULARLY FOR CONTROL OF ELECTRIC LOCK OF A MOTOR VEHICLE |
| US6329726B1 (en) | 2000-03-03 | 2001-12-11 | Broadband Telcom Power, Inc. | Proportional distribution of power from a plurality of power sources |
| JP3865192B2 (en) * | 2000-03-31 | 2007-01-10 | 本田技研工業株式会社 | Vehicle display device |
| US20030052365A1 (en) | 2001-09-18 | 2003-03-20 | Samir Chaudhry | Structure and fabrication method for capacitors integratible with vertical replacement gate transistors |
| ATE556890T1 (en) * | 2010-01-14 | 2012-05-15 | Smr Patents Sarl | FAILURE DETECTION OF ELECTRICAL CONSUMERS IN MOTOR VEHICLES |
| KR101164350B1 (en) * | 2010-08-02 | 2012-07-10 | 엘에스산전 주식회사 | Charging stand of electric vehicles |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3975708A (en) * | 1974-02-27 | 1976-08-17 | T.S.W.S., Inc. | Vehicle condition monitoring system |
| DE2923505A1 (en) * | 1979-06-09 | 1980-12-11 | Fichtel & Sachs Ag | Lock system for vehicle doors, bonnet etc. - has changeover contacts indicating lock state and connected to electronic control unit actuating lock servomotors |
| JPS60246966A (en) * | 1984-05-22 | 1985-12-06 | トヨタ自動車株式会社 | Theft detector of car |
-
1990
- 1990-06-05 FR FR9006936A patent/FR2662733B1/en not_active Expired - Lifetime
-
1991
- 1991-05-17 EP EP91401287A patent/EP0460985B1/en not_active Expired - Lifetime
- 1991-05-17 DE DE69101178T patent/DE69101178T2/en not_active Expired - Fee Related
- 1991-05-17 ES ES91401287T patent/ES2049533T3/en not_active Expired - Lifetime
- 1991-05-29 CA CA002043431A patent/CA2043431C/en not_active Expired - Fee Related
- 1991-06-04 BR BR919102298A patent/BR9102298A/en unknown
- 1991-06-04 JP JP13267791A patent/JPH06317054A/en active Pending
- 1991-06-04 US US07/709,938 patent/US5250849A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0460985A1 (en) | 1991-12-11 |
| EP0460985B1 (en) | 1994-02-16 |
| ES2049533T3 (en) | 1994-04-16 |
| DE69101178D1 (en) | 1994-03-24 |
| FR2662733B1 (en) | 1992-09-11 |
| JPH06317054A (en) | 1994-11-15 |
| BR9102298A (en) | 1992-01-14 |
| FR2662733A1 (en) | 1991-12-06 |
| CA2043431A1 (en) | 1991-12-06 |
| US5250849A (en) | 1993-10-05 |
| DE69101178T2 (en) | 1994-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |