EP0895559B1 - Locking system for motor vehicles - Google Patents

Locking system for motor vehicles Download PDF

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Publication number
EP0895559B1
EP0895559B1 EP97918137A EP97918137A EP0895559B1 EP 0895559 B1 EP0895559 B1 EP 0895559B1 EP 97918137 A EP97918137 A EP 97918137A EP 97918137 A EP97918137 A EP 97918137A EP 0895559 B1 EP0895559 B1 EP 0895559B1
Authority
EP
European Patent Office
Prior art keywords
locking system
electrode
grip
data
control unit
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 - Lifetime
Application number
EP97918137A
Other languages
German (de)
French (fr)
Other versions
EP0895559A1 (en
Inventor
Stefan Lange
Andreas Van Den Boom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huf Hulsbeck and Furst GmbH and Co KG
Original Assignee
Huf Hulsbeck and Furst GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE19617038A priority Critical patent/DE19617038C2/en
Priority to DE19617038 priority
Application filed by Huf Hulsbeck and Furst GmbH and Co KG filed Critical Huf Hulsbeck and Furst GmbH and Co KG
Priority to PCT/EP1997/001890 priority patent/WO1997041322A1/en
Publication of EP0895559A1 publication Critical patent/EP0895559A1/en
Application granted granted Critical
Publication of EP0895559B1 publication Critical patent/EP0895559B1/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/64Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • E05B81/78Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles as part of a hands-free locking or unlocking operation
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/64Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/76Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles
    • E05B81/77Detection of handle operation; Detection of a user approaching a handle; Electrical switching actions performed by door handles comprising sensors detecting the presence of the hand of a user
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/10Handles
    • E05B85/14Handles pivoted about an axis parallel to the wing
    • E05B85/16Handles pivoted about an axis parallel to the wing a longitudinal grip part being pivoted at one end about an axis perpendicular to the longitudinal axis of the grip part
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00793Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C2209/00Indexing scheme relating to groups G07C9/00 - G07C9/38
    • G07C2209/60Indexing scheme relating to groups G07C9/00174 - G07C9/00944
    • G07C2209/63Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
    • G07C2209/65Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle using means for sensing the user's hand

Abstract

In a locking system, as for instance used on a vehicle, a switch or sensor, initiates the interrogation of a data storage medium via a control unit to check for access authorisation. If access authorisation is given the control unit releases the locks of the locking system automatically. To improve user convenience regarding the system release, the invention proposes to integrate at least one capacitive sensor in at least one door handle. For this purpose at least one first electrode is situated in the inner shell of the door handle and a second electrode is placed in the area of a door opposite the handle. By applying an antipole voltage to both electrodes an electrical field is generated between the two. The approach of a hand, which in the invention acts as a dielectric, causes a change in the cumulative dielectric state between the two electrodes. Such a change is recognised by the capacitive sensor and transformed into an electric pulse which initiates in the electrical control unit interrogation of the data storage medium. The data storage medium then sends its data to the on-board electrical control unit which compares the data received with the data stored and releases the locks on the doors of the vehicle if the data match.

Description

The invention relates to a locking system in the preamble of the claim 1 type. With such a locking system, access authorization is required checked by means of an electromagnetic data query. The field of application of Invention is particularly directed to motor vehicles, entrances Security zones etc.

With locking systems of the type mentioned above, it is known to give access to a person e.g. a vehicle via a data query from a data carrier, e.g. one Check card, to enable. The data query is carried out by an am Vehicle-mounted mechanical switch or sensor, e.g. one Light barrier, triggered, which on a door handle or at least in the area of a Door handle are installed. The person requesting access solves the data query of the Data carrier by a control unit, e.g. in a vehicle, by actuation the switch, more precisely by moving the door handle, or by means of the Driving through a light barrier with one hand. The triggered pulse is in this case passed on by the control unit to a transmitter which requests the data transmitted to the data carrier. The disk receives the command to Data query and passes this on to a data unit that contains the required data forwards to a transmitter. The transmitter then transmits the data again via the Vehicle-side transmitter / receiver unit to the control unit in the vehicle, which in the In the event of positive data detection, a command to unlock the Locking system issues.

The data query therefore only occurs when a handle is pressed for the first time a handle or a flap of a door handle and thus to one relatively late because, as from the description above is followed by a few more steps. This delayed data query as well the subsequent response time of a central locking system make one System uncomfortable. In some cases, this has the consequence that the locking system is not yet unlocked when the door handle is operated for the first time and which gives access Desiring person must press the door handle again to open a door to open.

DE 44 35 894 A1 describes a security system for securing a Motor vehicle known, in which the data query of a transponder inductively triggered an induction coil arranged on the vehicle near a door handle becomes. The person requesting access thereby solves the data query of the transponder that she approaches the vehicle with the induction coil, and the transponder is addressed by it. The transponder then sends the data stored in it Data, the identification code to a control unit that gives access authorization checked. The control unit then gives the data in the event of positive data recognition Command to unlock the locking system.

In the above device, it is disadvantageous that an unintended Unlocking the locking system can be done if the user unintentionally and accidentally approaches his vehicle again after the closing process is secured via the described safety device.

From DE AS 15 66 733 is an arrangement for unlocking and monitoring a locking system known. With this arrangement, the data carrier consists of a luminescent diode attached to a portable transmitter. At the door-side locking device is a receiver with a Control electronics is coupled to an incoming signal from the portable transmitter evaluates. To unlock the locking system, the user must use the portable transmitter with the LED on the locking device side Aim the receiver and press the transmitter. The broadcast by the broadcaster Light signal, which has a characteristic wavelength, is then from Receivers received and transmitted to the control unit, which checks whether a Coincidence of the emitted by the transmitter with the set light frequency is present. If this is the case, the control unit unlocks the locking device.

It is disadvantageous here that the user is still involved in laborious work must by targeting the transmitter to the locking device-side receiver must judge what makes the system uncomfortable.

From DE 36 21 592 C1 a locking system is known which consists of an infrared transmitter as well as several on the vehicle side in the area of the vehicle outer skin attached infrared receivers that control the locking system.

To unlock the locking system, the user must, as already in aforementioned case, the portable transmitter with the IR diode on the Set the receiver on the locking system side and actuate the transmitter. That from the broadcaster emitted IR light, which has a characteristic wavelength then analyzed by the receiver and checked whether there is a coincidence of the transmitter emitted with the set light frequency. If so, then the control unit unlocks the locking device.

There is also the disadvantage that the user is still cumbersome must act by targeting the transmitter on the locking device side Receiver must address what makes the system uncomfortable.

From DE 34 40 442 A1 there is also a built-in push button for vehicle doors known, which has two probe elements, via which a microswitch can be actuated.

The object of the invention is a system in the preamble of claim 1 to develop a way that a user in a comfortable and safe manner Allows access to a motor vehicle. This is according to the invention by the characterizing part of claim 1 measures achieved, those has the following special meaning.

The peculiarity of the measures described there is that in the Handle the door handles at least one electrode is installed and in which the Handle has a counter electrode attached to the opposite part of the door, which can also be the door itself. Will be between two electrodes electric field built up, this can be used to advantage are already granting access to a person reaching for a door handle sensing. This happens according to the invention in that a hand that after a of the handles on the doors reaches one when you approach them Changes in the capacity built up between the two electrodes brings about. The hand has the special function that it is the dielectric between the handle-side electrode and the door-side counter electrode changed by part of the ambient air through the dielectric of your hand is replaced and thus a total total dielectric results. Advantageously, the entire process, from sensing the approach of the Hand up to the receipt of the data transmitted from the data carrier and the subsequent unlocking of the locking system in the event of detection of a Access authorization, certainly before the actual activation of the Handle completed.

Electronics that perceive the change in capacity and in one Command pulse translated, is preferably space-saving in the handle of the door handle contain. The command pulse generated by this electronics triggers in the electrical Control unit polls the disk.

It is also useful if another electrode is used, which the The task is to provide the system with data to compensate for differences in capacity due to changing external conditions, e.g. by changing Weather conditions.

Further measures and advantages of the invention result from the subclaims, the following description and the drawings. In the drawings, the invention is shown in one embodiment. Show it:

Fig. 1
schematically a vehicle with an integrated locking system,
Fig. 2
schematically a data carrier, which is shown here in the embodiment of a check card,
Fig. 3
a door handle shown in perspective,
Fig. 4
a handle and part of a door in cross section.

As can be seen from FIGS. 1 to 4, the invention is a Locking system consisting of several components 13 - 37, and this in the here illustrated embodiment is integrated in a vehicle 10. This Locking system should be possible for the authorized user of vehicle 10 Allow access to vehicle 10 in a comfortable and simple manner. From Fig. 1 can be seen that in this embodiment, two doors 12 each Door handle 13 and a lock 14 are attached. One belongs to the door handle 13 Handle 27, such as a handle or a handle flap, which has a capacitive sensor 30-34 contains. From the door handles 13 conductors 18 run from the capacitive Sensor 30-34 to an electrical control unit 16. Via these conductor tracks 18 will be a signal from the capacitive sensor 30-34 in the event of a hand approaching to the space between the door handle 13 and the door 12 to the electrical Control unit 16 issued. This is triggered in the electrical control unit 16 Signal a data query from a user-side data carrier 20 (FIG. 2), which the electrical control unit 16 via the conductor tracks 19 to a plurality of transmitting / receiving units 15 passes on, which the data query electromagnetically to the Transmit data carrier 20 shown in Fig. 2.

In data carrier 20 there is the command for data output via an antenna 24 caught and forwarded to a receiver 22 of the data carrier 20. The Receiver 22 forwards the signal to the data unit 23 of the data carrier 20 the data retrieved via a transmitter 21 and the antenna 24 of the data carrier 20 transmitted to the transmitting / receiving units 15 in the vehicle 10. In disk 20 are in addition to the units mentioned above in this embodiment also a power supply 26 and electronics 25, the functions of the Data carrier 20 controls.

The transmitting / receiving units 15 pass the received data on the Conductor tracks 19 to the electrical control unit 16. In the electrical Control unit 16, the data supplied by the data carrier 20 with the in the electrical control unit 16 compared stored identification data. In the positive Data detection case (recognition of access authorization) gives the electrical Control unit 16 by means of the conductor tracks 17 a signal to unlock the Locks 14 to this, which the handle 27 of an ineffective in transferred an effective mode. In this effective condition, the handles 27 the locks 14 can be opened by actuating the handle.

The power supply of the locking system, the electrical control unit 16 and the other effective electrical components in this embodiment of the car battery 11 taken over.

As can be seen from FIGS. 3 and 4, a first electrode 30 of the capacitive sensor 30 - 34 in this embodiment divided into two and arranged symmetrically in an inner shell 28 of a handle 27. The cross profiles of the two parts of the first electrode 30, as shown in the cross section of FIG Handle 27 shown in Fig. 4, an L-profile. Midway between the two parts of the The compensation electrode 33 is arranged in the electrode 30. In that Lock cylinder 37 facing part of the handle 27 is the electronics 34 of the capacitive sensor 30-34 in this exemplary embodiment on the inner shell 28 appropriate. The electrodes 30, 33 and the electronics 34 are air-tight with an insulating layer 36 coated.

From Fig. 3 it can be seen that the handle 27 in an outer shell 29 Key switch 35 is located, which in this embodiment locks the Locking system 13 - 37 made possible by actuating the same.

As can be seen from Fig. 4, in this embodiment, along the outer shell 29 guided the conductor track 18. Furthermore, the approximate spread is in FIG. 4 an electric field 32 between the first electrode 30 and a second Electrode 31, which corresponds to door 12 of vehicle 10 in this embodiment, shown.

In the event of a power failure, the door 12 can also be locked using the lock cylinder 37 can be opened with a key provided for such cases.

It remains to be noted that the embodiment shown here is only one exemplifies implementation of the invention. However, this is not on it limited. It could e.g. the push button switch by a second, additionally in the Outer shell of the handle 27 attached sensor to be replaced, the desire a person after securing the vehicle by swiping their hand in front the side of the handle 27 facing away from the vehicle 10. The electrodes are also not limited to any particular form, but rather can be any Have shape that is possible for the respective electrode. The number of sensors is also not limited to a certain number.

LIST OF REFERENCE NUMBERS

10
vehicle
11
car battery
12
door
13
door handle
14
Lock
15
Transmit / receive unit
16
electrical control unit
17
Conductor (electrical control unit - locking cylinder)
18
Conductor (electrical control unit - capacitive sensor)
19
Conductor (electrical control unit - transmitter / receiver unit)
20
disk
21
Sender (of the data carrier)
22
Recipient (of the data carrier)
23
Data unit (of the data carrier)
24
Antenna (of data carrier)
25
Electronics (of the data carrier)
26
Power supply (of the data carrier)
27
handle
28
Inner shell (of the handle)
29
Outer shell (of the handle)
30
first electrode
31
second electrode
32
electric field
33
compensation electrode
34
Electronics (of the capacitive sensor)
35
Push switch
36
insulating
37
lock cylinder

Claims (10)

  1. Locking system especially for motor vehicles, consisting of a lock (14), to be actuated by a grip (27) on at least one door (12), tail gate, etc.,
    where the lock (14) can be switched between two different positions, namely, a secured position which makes the grip (27) inoperative
    and another position which allows the grip (27) to operate, in which position the lock (14) is to opened by actuation of the grip (27),
    and in which a sensor (30-34), located near the grip (27) and connected to an electrical control unit (16), initiates the process by which a data storage medium (20), held by the operator, is interrogated for data by the electrical control unit (16);
    where the electrical control unit (16) is connected to a send/receiver unit (15) and transmits via this unit the data request to the data storage medium (20) held by the operator,
    and the data storage medium (20) transmits its data from a data unit (23) via a transmitter (21) to the send/receiver unit (15) in the vehicle,
    and the send/receiver unit (15) passes the data along to the electrical control unit (16),
    and the electrical control unit (16), in the event of a positive data identification, orders the release of the lock or locks on at least one door (12), tail gate, etc., of the vehicle (10),
    characterized in that
    the sensor (30-34) is designed as a capacitance sensor; in that at least a first electrode (30) of the capacitance sensor (30-34) is integrated into the grip (27), whereas a second electrode (31) of the capacitance sensor (30-34) is mounted near the grip (27) on the door as a structural component of the sheet metal construction of the door, so that an electrical field (32) is generated between the electrodes; and in that the capacitance between the two electrodes (30, 31) can be changed by the dielectric of a human hand entering the area of the electrical field (32) and thus detected.
  2. Locking system according to Claim 1, characterized in that the electronic circuit (34) of the capacitance sensor (30-34) is integrated into the grip (27).
  3. Locking system according to one of Claims 1 - 2, characterized in that the grip (27) has another electrode, which functions as a compensating electrode (33).
  4. Locking system according to one of Claims 1 - 3, characterized in that the first electrode (30) is divided into two electrode parts.
  5. Locking system according to one of Claims 1 - 4, characterized in that the first electrode (30) is mounted symmetrically in an inner shell (28) of the grip (27).
  6. Locking system according to one of Claims 1 - 5, characterized in that the two electrode parts of the first electrode (30) extend along the long edges of the inner shell (28) of the grip (27).
  7. Locking system according to one of Claims 1 - 6, characterized in that the compensating electrode (33) is mounted between the two electrode parts of the first electrode (30).
  8. Locking system according to one of Claims 1 - 7, characterized in that an additional sensor for locking the locking system is built into the grip (27).
  9. Locking system according to one of Claims 1 - 8, characterized in that an additional electrode in the grip (27) is assigned to the additional sensor.
  10. Locking system according to one of Claims 1 - 9, characterized in that the locking of the locking system is initiated by the use of a mechanical push-button switch (35).
EP97918137A 1996-04-27 1997-04-16 Locking system for motor vehicles Expired - Lifetime EP0895559B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19617038A DE19617038C2 (en) 1996-04-27 1996-04-27 Locking system, in particular for motor vehicles
DE19617038 1996-04-27
PCT/EP1997/001890 WO1997041322A1 (en) 1996-04-27 1997-04-16 Locking system, particularly for motor vehicles

Publications (2)

Publication Number Publication Date
EP0895559A1 EP0895559A1 (en) 1999-02-10
EP0895559B1 true EP0895559B1 (en) 2002-01-16

Family

ID=7792742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97918137A Expired - Lifetime EP0895559B1 (en) 1996-04-27 1997-04-16 Locking system for motor vehicles

Country Status (11)

Country Link
US (1) US6075294A (en)
EP (1) EP0895559B1 (en)
JP (1) JP2000509121A (en)
KR (1) KR100406329B1 (en)
CN (1) CN1119488C (en)
AU (1) AU731480B2 (en)
BR (1) BR9708868A (en)
DE (2) DE19617038C2 (en)
ES (1) ES2166535T3 (en)
PT (1) PT895559E (en)
WO (1) WO1997041322A1 (en)

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