DE10236957B4 - Locking device for motor vehicles - Google Patents

Abstract

Locking device for motor vehicles (10)
with a lockable and unlockable lock (14) on a mobile part (11, 12) of the vehicle body,
with a handle (15) on the mobile part (11, 12) for manually opening the mobile part (11, 12) when the lock (14) is unlocked,
wherein the handle (15) has a sensor (handle sensor 25, 26) acting on the lock of the lock (14), which sensor responds to the approach of the hand and / or to the actuation of the handle,
with a keyless entry and operation control system (passive access system) for the vehicle (10), consisting of a mobile ID transmitter (40) carried by the authorized person and a vehicle-mounted fixed ID receiver,
which, apart from an ID receiver (43) in the stationary part (13) of the vehicle body, also comprises two communication units (21, 31) for the ID transmitter (40) which are positioned in different locations in the vehicle (10) and act as both transmitters and receivers .
of which the one unit (31) arranged in a vehicle interior (19) ...

Description

The Invention is directed to a locking device in the preamble of claim 1 type, which with a keyless Access and operating system operates, referred to as the "Passive Access System" becomes. This system consists of one from the authorized person entrained ID transmitter and from a multi-component vehicle-side ID receiver. This system should as possible the various locks in the vehicle quickly redirect or for make the reversal ready when the authorized person with her ID transmitter approaching the vehicle, or is in the vehicle and there start and operate the engine want. The Locks hold different handsets of the vehicle body in its closed position. This includes the doors and flaps of a vehicle, such as the hood, the tailgate or the boot lid. For manual movement of the handsets a handle is provided which, when the lock is unlocked, manually opens the lock Handset allowed.

Around when approaching of the ID transmitter to be able to act on the lock of the lock serves a built-in handle sensor called the "handle sensor" shall be. The grip sensor responds when the hand touches the Handle approaches, or if an operation the handle is started.

The Components of the ID recipient in the vehicle initially include a ID receiver in the stationary part, then but also cooperating transmitter and receiver as a "communication unit" with the Collaborate ID encoder. Such communication units are part of it at least one arranged in the vehicle interior module, which hence "interior space module" should. These interior modules are required if the authorized Person with their ID transmitter is located in the vehicle and the engine start and operate the vehicle and anti-theft devices wants to put an end to the steering means for the vehicle or the automatic transmission of the Motors attack. This includes z. B. an electric steering lock or a starter switch or the hand lever of an automatic transmission.

Around the communication unit in one of the interior modules effectively is still set an actuator provided in the vehicle interior, which must be triggered and therefore called "trigger actuator" shall be. Such a tripping actuator can in that the authorized person owned by the ID-donor Person briefly breaks the brake in the vehicle. Then finds a data exchange between the communication units in the interior module and the ID transmitter instead, which then acts on a central electrical control unit. at the known locking device was in this central electrical control unit also a microcontroller for the various modules provided.

As already mentioned was provided in the handle of the handle sensor, which at approach or at initiating activity the handle is put into effect. In the handle is also one Communication unit of the "Passive Access System "integrated, which the outside space the vehicle is monitored for the approach of an ID transmitter. Therefore, this complex electrical component in the grip called "handle module" become. This also interacts with the central electrical control unit.

at the known locking device This type requires a large number of strands of various types. which for provide an electrical connection of all peripheral devices with the central control unit. This includes first two supply lines in each of these strands, hence the relevant one Device his receives electrical power, which the control unit a vehicle-side power source, such as a battery, takes. Further Each strand comprises two antenna lines and a control line. Usually the vehicle has four doors and a flap with handles provided, to each of which consequently a five-wire strand are performed got to. That's at least five Wiring harnesses. To safely detect the position of the ID transmitter inside the vehicle, several interior modules are arranged distributed in the vehicle interior; usually four modules in the field of four seats and a fifth module in the area of the trunk. One comes here already with two-wire line strands out, but are for the five interior modules five more wiring harnesses required. This requires in the known locking device a considerable cost of line material, also a cumbersome Relocation work of many lines in the vehicle and finally accordingly huge Space requirement in the vehicle.

In the older application DE 101 31 896 A1 It is proposed to provide a Piezoelement in an outside door handle in a door closing system for motor vehicles, which detects a touch or operation of the outside door handle. To increase the reliability and to minimize energy consumption, a monitoring device for the piezoelectric element is provided there, which monitors the occurrence of a first signal in the event of a break.

The other older application DE 102 02 329 A1 is directed to a locking system for access and driving authorization of a motor vehicle. This locking system has at least two stand up. A first control device serves for unlocking or locking the car doors, the ignition lock, the steering wheel lock and for releasing or blocking an immobilizer. In addition, a second control device in the form of an ID transmitter, a smart card or the like. Provided. These two devices have transmitting and receiving means for signals. At least one signal transmitted between the two devices is an encoded operating signal. In a positive evaluation of this operating signal by the second device, a change in the state of the first-mentioned control device is effected. The second device may also be in a sleep state that relies on a reduced energy operating state. The second device finally has an actuator that can transfer it from the sleep state to an operating state.

Of the Invention is based on the object, a reliable locking device to develop the type mentioned in the preamble of claim 1, the can be produced and operated particularly inexpensively. This is inventively the features mentioned in claim 1, which following special Meaning.

at The invention will be in the mentioned handle modules on the one hand and interior modules on the other hand further electrical Components integrated. This results in new compared to the prior art Modules, the following grip side as "handle combination module" and the interior side referred to as "internal combination module" should be. The integrated components are each one own microcontroller and an AC voltage generator for high voltages for the each in the module located communication unit.

From that starting according to the invention continues proposed in the vehicle only a single common wiring harness to be provided, which consists of at least one bus line and two power supply lines exists, at which then the various peripheral devices each have a Multimaster bus interface are connected. These peripheral equipment are first the aforesaid Handle combination module and interior combination module. They also belong to it the above mentioned Anti-theft module and the passive receiver ID receiver System. With this central wiring harness is also the electrical Control unit connected. After all is also the trigger operator either directly or indirectly connected to this central wiring harness. The indirect connection can over one of the internal combination modules happen.

Thereby the invention comes in a very space-saving way with only one Wiring harness. Each of the combination modules works over the Wiring harness on the control unit, which in turn on the same line of cables issues the commands for the various functions of the peripheral devices. It will be considerable Saved on line material, space and installation work.

Further activities and advantages of the invention will be apparent from the dependent claims, the following Description and the drawings. In the drawings, the invention schematically in an embodiment shown. Show it:

1 a schematic plan view of the vehicle with a block diagram of the locking device according to the invention,

2 the electrical design of the handle combination module according to the invention, wherein the handle is illustrated by its semicolon outline and

3 the corresponding structure of the internal combination module according to the invention.

As 1 shows possesses the vehicle shown 10 stationary and mobile parts of his vehicle body. This includes five handsets in the form of four doors 11 and a trunk lid 12 , which opposite the remaining stationary part 13 the body are movable. On each of the handsets 11 . 12 there is a handle 15 , which mechanically and / or electrically to a lock 14 can act. The castle 14 is transferred between a lockable and unlockable position. Is the castle located 14 in an unlocked position, then the associated handset 11 . 12 to be opened over the handle.

The locking device in this vehicle 10 is, as already mentioned, operated via a keyless access and operation control system, which will be referred to below with its English abbreviation "PAS" (= Passive Access System). First of all, a movable ID transmitter belongs to the PAS 40 which is in the possession of the authorized person. The ID transmitter comprises transmitting and receiving units with a power supply and operates with two locally differently positioned in the vehicle communication units 20 . 43 Together, the components of a multi-part ID pickup vehicle 10 are.

Like the circuit diagram of 2 clarifies, includes there dash-dotted lines indicated handle 15 a special module 20 that the in 1 With 16 designated outside space of the vehicle 10 supervised. In this module 20 is initially an already mentioned, as a sender and / or receiver acting communication unit 21 integrated. This module 20 further comprises at least one of the in 2 With 25 and 26 designated grip sensors, namely a responsive to the approach of the human hand approach sensor and / or responsive to the first phase of the handle actuation motion sensor 26 , The proximity sensor 25 is capacitive and includes at least one module 20 arranged electrode of a capacitor. In response, an electric field is built up, which is based on the approach of the human hand in the area of the handle 15 if the PAS is effective. The motion sensor 26 If the authorized person equipped with the ID transmitter reaches the handle, he speaks 15 begins to operate. Usually only one of the two sensors 25 or 26 used.

In the module 20 are the sensors 25 . 26 to a likewise in the handle 15 integrated microcontroller 23 connected via an antenna driver 22 with the communication unit 21 which is occasionally connected, as in this case, with a ferrite core 27 can be equipped. The latter may also be missing. The antenna driver 22 is intended for the communication unit 21 with an operating voltage of z. B. 300 volts, although as an energy source in the vehicle for only one in 1 clarified battery 17 with a DC voltage of z. B. 12 volts is available. This battery 17 is about the in 1 With 18 marked connection with the 2 recognizable two power supply lines 51 . 52 connected, which is part of a common wiring harness 50 are. This wiring harness 50 pervades the whole vehicle 10 , as 1 clarified.

The wiring harness 50 includes, according to 2 , another bus line 53 , At this strand 50 are like 1 and 2 shows, in every module 20 over the connections 28 the above-described components 23 . 22 by means of a multimaster bus interface 24 connected. This module 20 is in 1 illustrated by fine dot hatching. That under control 15 integrated module 20 So is a combination of different interacting electronic components, which is why the term "handle combination module" is to be used hereinafter. Its effectiveness in the closure device according to the invention can be briefly described as follows.

The authorized person approaches with their ID provider 40 one of the gaffe 15 , so will about the communication unit 21 the local handle combination module 20 the ID transmitter 40 aroused. This electromagnetic communication is z. B. in low frequency and is in 1 With 41 designated. The ID transmitter 40 then answer like that with 42 characterized electromagnetic radiation in 1 illustrates, for. B. over high frequency. This answer is from one in the stationary part 13 the vehicle arranged ID receiver 43 received, the z. B. is located under the hood. The ID receiver 43 is about a connection 44 with the bus wiring harness 50 connected. Has the ID receiver 43 the signals 42 successfully evaluated, he unlocks the locks 14 , This is also done via the bus wiring harness 50 even if it is in 1 not shown in detail. There is an electrical connection between the lock and the handle 15 , so already opens the lock by electrical means. If there is a mechanical connection, the lock and thus the door are opened 11 conveniently by pressing the handle 15 , This opening of the castle 14 happens when the handle combination module 20 through one of his sensors 25 or 26 determines the will of the authorized person, the relevant door 11 to want to open. This is the access to the interior 19 of the vehicle 10 reached.

If the authorized person enters the vehicle, the ID transmitter is located 40 in the interior 19 and will be effective there when it comes to further operational control of the vehicle 10 goes. There are in 1 coarse-point hatching highlighted modules 30 , whose basic structure in 3 is illustrated schematically. Similar, as in the case of 2 , also owns this module 30 a communication unit functioning as transmitter and receiver 31 which, however, does not require a ferrite core. This unit 31 is on an analogue antenna driver 32 connected by its own microcontroller 33 is controlled. Again, the connection is via a multimaster bus interface 34 with the above-described bus. Because in this module 30 in the interior 19 is arranged, other special electronic components 32 to 34 be combined with each other, it should be called "internal combination module".

How out 1 As can be seen, there are several such modules 30 in the vehicle interior 19 arranged distributed. For example, in the area of each of the four seats 35 and in the trunk a total of five such internal combination modules 30 arranged distributed. Each of these modules 30 is via a connection cable 38 with the unified bus wiring harness 50 in connection. Will those with an ID transmitter 40 mischief person, standing in the interior 19 When the engine of the vehicle is started, the following actions and procedures take place.

First, the legitimate person documents their will to start the engine through a specific initiation act, which in the present case is made by briefly pressing a brake pedal 36 he follows. This pedal 36 sits on a brake module 37 , which in the present case has a with 39 characterized connecting line with one of the interior modules 30 is connected, which in turn, as already mentioned above 38 to the bus wiring harness 50 are connected. As dashed at 29 in 1 illustrated, the brake module could 37 also directly to the bus wiring harness 50 be connected. The described communication unit 31 of the inner combination module 30 wakes now, z. B. acting on a low frequency, located in the vehicle ID encoders 40 , which in turn provides an answer to the module 30 gives. The latter can be done occasionally in high frequency again. This answer is provided by the ID receiver 43 in the vehicle 10 evaluated, then about his connection 44 and the bus 50 on an anti-theft module 46 acts. This consists in the present case of an electric steering wheel lock 46 , This gives the in 1 recognizable steering column free when the ID receiver 43 has successfully evaluated the signals.

How out 1 shows is the electric steering lock 46 with a data processing logic 45 connected. In the present case, this logic 45 or a part thereof, which is located in the same housing at the same time be used to take over the function of a central control unit for the entire locking device according to the invention. This controller 45 is over the connecting line 48 with the common bus 50 connected.

It should be understood that the above-mentioned initiation action could be of a different nature than the inner combination module 30 to activate. This can z. B. serve in the fitting area provided pressure or knob, which must be pressed. Further, instead of a steering wheel lock 46 the module of another anti-theft device may be used, e.g. As the locking of an automatic transmission for the engine. In case of locking, the handle of the automatic transmission is blocked.

To start and to operate the engine is in the vehicle 10 another ignition switch 55 intended. This is in the present case via a connection 54 to the electric steering wheel lock 46 connected and is therefore also transferred in their reversal in the switched by a control logic working states, such as "start" and "drive" of the engine. As indicated by dashed lines, but can also be an immediate connection 49 between the ignition switch 55 and the bus 50 consist. Then, the control of the ignition starter switch takes place 55 directly over the bus 50 from the central electrical control unit 45 out.

Finally, the locks 14 interconnected by a known per se central locking system, which of a central locking control unit 56 is commanded. This unit 56 is in the illustrated embodiment, directly on the connecting cable 57 with the common bus 50 connected. This will cause the control commands over the bus 50 the individual castles 14 fed, as already mentioned above, which is not shown in detail. Alternatively, this central locking control unit could 56 be connected to a bus gateway not shown in detail another bus system, which in turn is again with the central electrical control unit 45 communicates. How to proceed depends on the particular application.

If the owned by the ID-giver 40 If the person has left the vehicle and wants to secure it from the outside, then the locking device according to the invention operates in the following manner.

In order to manifest his will to make the backup, the authorized person again performs a certain initiation action. In the present case, for. B. a push button 58 in one beside the handle 15 arranged and in 2 indicated handle housing provided, which is actuated in this case. Other initiation actions may be taken, such as: B. Touch the handle or press the handle 15 , The latter is from the grip sensors 25 . 26 registered.

This initiation action causes the inner combination modules 30 ask if the ID transmitter is mistakenly still in the vehicle interior 19 located. If this is the case, it may indeed trigger a reaction of the device according to the invention, but this reaction would immediately be reversed. The vehicle 10 remains unlocked, the anti-theft module remains ineffective and the locks 14 stay in unlocked position.

But if one of the handle combination modules 20 the position of the ID transmitter 40 outside 16 of the vehicle 10 determines, then it comes in an analogous manner to the already described during unlocking effect of the various components, but in the opposite direction. The Locks 14 be via the central locking 56 locks and the electric steering wheel lock 46 is set effective and blocks the steering 47 ,

10

motor vehicle

11

first Handset of the body, door

12

second Handset of the body, boot lid

13

Stationary part of the body

14

lock

15

attacked 11 respectively. 12

16

Exterior of 10

17

electrical battery pack

18

electrical connection between 17 and 50

19

Interior of 10

20

Handle combination module

21

Communication unit in 20

22

Antenna driver for 21

23

Microcontroller for 22 in 20

24

Multimaster bus interface between 20 and 50

25

first Handle sensor, proximity sensor

26

second Handle sensor, motion sensor

27

Ferrite core in 21 . 31

28

Connection of 20 at 15

29

Alternative connection from 37 at 50

30

Module in 19 , Interior combination module

31

Communication unit in 30

32

Antenna driver for 31

33

Microcontroller for 32

34

Multimaster bus interface between 30 and 50

35

Seats in 19

36

Tripping actuator, brake pedal

37

Module for 36 , Brake module for 36

38

Connection between 30 and 50

39

electrical connection between 37 and 30

40

Portable ID transmitter

41

Communication radiation between 20 and 40

42

Communication radiation between 40 and 43

43

ID Receivers

44

connection between 43 and 50

45

Data processing logic for 46 , central electrical control unit

46

Anti-theft module, electric steering wheel lock

47

Steering column for 46

48

Connection between 45 . 46 and 50

49

alternative direct connection between 55 and 50

50

common Wiring harness, bus

51

first power supply line in 50

52

second power supply line in 50

53

Bus line in 50

54

connection between 55 and 46

55

Ignition

56

Central locking control unit

57

Connecting cable between 56 . 50

58

Push button in 59 ( 2 )

59

Handle housing for 58 ( 2 )

Claims (5)

Locking device for motor vehicles ( 10 ) with a lockable and unlockable lock ( 14 ) on a handset ( 11 . 12 ) of the vehicle body, with a handle ( 15 ) on the handset ( 11 . 12 ) to manually open the handset ( 11 . 12 ) with unlocked lock ( 14 ), whereby the handle ( 15 ) one on the lock of the lock ( 14 ) acting sensor (handle sensor 25 . 26 ), which is responsive to the approach of the hand and / or the operation of the handle, with a keyless entry and operation control system (passive access system) for the vehicle ( 10 ), consisting of a mobile ID transmitter (carried by the authorized person) ( 40 ) and from a vehicle-side stationary ID-receiver, which except an ID receiver ( 43 ) in the stationary part ( 13 ) of the vehicle body also two different locations in the vehicle ( 10 ) positioned both as transmitter and receiver communication units ( 21 . 31 ) for the ID transmitter ( 40 ), of which one unit ( 31 ) in a vehicle interior ( 19 ) is located while the other unit ( 21 ) in a grip, outside the vehicle ( 16 ), arranged module (handle module) is arranged, in which also the handle sensor ( 25 . 26 ) is integrated with an anti-theft module ( 46 ) in the vehicle ( 10 ), which is connected to steering means ( 47 ) for the vehicle or on the automatic transmission of the engine, with an in-vehicle interior ( 19 ) arranged actuator (tripping actuator 36 ) for triggering the interior module, with a central electrical control unit ( 45 ) for the interior module, the handle module, the anti-theft module ( 46 ) and the trigger actuator ( 36 ) and with a microcontroller for the modules, characterized in that on the one hand a separate microcontroller ( 23 . 33 ) and on the other hand an AC generator ( 22 . 32 ) for the associated communication unit ( 21 . 31 ) are integrated in both the handle module and in the interior module and therefore a grip-side combination module ( 20 ) and an interior-side interior combination module ( 30 ) form the handle combination module ( 20 ), the interior combination module ( 30 ), the anti-theft module ( 46 ) and the ID receiver ( 43 ) each via a multimaster bus interface ( 24 . 34 ) on a common wiring harness ( 50 ), which consists of at least one bus line ( 53 ) and two power supply lines ( 51 . 52 ), that the central electrical control unit ( 45 ) with this wiring harness ( 50 ) over the connection ( 48 ) and, finally, that the tripping actuator ( 36 ) for the internal combination modules ( 30 ) on this wiring harness ( 50 ) either directly ( 29 ) or indirectly ( 39 ), via one of the internal combination modules ( 30 ), connected. Locking device according to claim 1, characterized in that an operating component of the vehicle ( 10 ), such as the anti-theft module electrical steering wheel lock ( 46 ), structurally with a data processing logic ( 45 ) and that this data processing logic ( 45 ) at the same time takes over the function of the central electrical control device of the entire locking device. Locking device with a central locking system, according to claim 1 or 2, characterized in that the central locking control unit ( 56 ) for the different handsets ( 11 . 12 ) of the vehicle locks ( 14 ) on the common wiring harness ( 50 ) either directly ( 57 ) or indirectly, via a bus gateway of another bus system. Locking device according to one of claims 1 to 3, characterized in that the ignition starter switch ( 55 ) in the vehicle interior ( 19 ), which is manually operable, on the common wiring harness ( 50 ) either directly ( 49 ), or indirectly ( 54 ) about the anti-theft module ( 46 ), connected. Locking device according to one of claims 1 to 4, characterized in that the central electrical control unit ( 45 ) in the anti-theft module ( 46 ) is integrated.