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DE102011110142A1 - Standard electronic immobilizer for motor car, has relay disconnecting and/or closing electric circuit in cable according to signals, which are received from reader of radio frequency identification system - Google Patents

Standard electronic immobilizer for motor car, has relay disconnecting and/or closing electric circuit in cable according to signals, which are received from reader of radio frequency identification system Download PDF

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Publication number
DE102011110142A1
DE102011110142A1 DE201110110142 DE102011110142A DE102011110142A1 DE 102011110142 A1 DE102011110142 A1 DE 102011110142A1 DE 201110110142 DE201110110142 DE 201110110142 DE 102011110142 A DE102011110142 A DE 102011110142A DE 102011110142 A1 DE102011110142 A1 DE 102011110142A1
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Germany
Prior art keywords
immobilizer
reader
electronics
relay
signals
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Ceased
Application number
DE201110110142
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German (de)
Inventor
Anmelder Gleich
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Individual
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Individual
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Priority to DE201110110142 priority Critical patent/DE102011110142A1/en
Publication of DE102011110142A1 publication Critical patent/DE102011110142A1/en
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/01Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
    • B60R25/04Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
    • B60R25/045Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor by limiting or cutting the electrical supply to the propulsion unit

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The immobilizer has a relay integrated in an electronics housing in a cable of the immobilizer. The relay disconnects and/or closes an electric circuit in the cable according to signals, which are received from a reader of a radio frequency identification system. The relay is supplied with current by a car battery. A transmitter antenna is attached outside the electronics housing. An acid-filled ampoule is fastened in the electronics housing such that the ampoule is broken when opening the housing and acid flows into an electronics circuit.

Description

Elektronische Wegfahrsperren nach dem Stand der Technik sind in die Elektronik von Kraftfahrzeugen in der Weise integriert, dass dort ein geschlossener Stromkreis Voraussetzung dafür ist, dass betriebsnotwendige Aggregate mit Strom versorgt werden. Damit, dass die Zündung abgestellt wird, wird dieser Stromkreis automatisch unterbrochen mit der Folge, dass das Fahrzeug nicht betriebsbereit ist. Geschlossen wird dieser Stromkreis mittels eines RFID-Systems: Im Zündschlüssel ist ein passiver Transponder integriert, der mit dem Lesegerät der Elektronik korrespondiert. Gibt der Transponder beim Einstecken des Zündschlüssels den passenden Code zurück, dann bewirkt das Lesegerät in der Elektronik den Stromfluss der Wegfahrsperre mit der Folge, dass die betriebsnotwendigen Aggregate des Kraftfahrzeugs nunmehr mit Strom versorgt werden.Electronic immobilizer according to the prior art are integrated into the electronics of motor vehicles in such a way that there a closed circuit is a prerequisite for the fact that units necessary for operation are supplied with power. With the ignition switched off, this circuit is automatically interrupted with the consequence that the vehicle is not ready for operation. This circuit is closed by means of an RFID system: The ignition key has a passive transponder integrated, which corresponds to the reader of the electronics. If the transponder returns the appropriate code when the ignition key is inserted, then the reading device in the electronics effects the current flow of the immobilizer, with the result that the operating units of the motor vehicle are now supplied with power.

Stand der Technik sind illegale Vorrichtungen, mit denen diese Wegfahrsperre außer Funktion gesetzt werden können. Sie werden in den Diagnosestecker der Elektronik eingesteckt und sie sind so programmiert, dass sie der serienmäßigen Wegfahrsperre des Fahrzeugs den erwarteten Code übergeben mit der Folge, dass die Übergabe dieses Codes durch den Transponder im Zündschlüssel ersetzt wird. Das Fahrzeug ist dann fahrbereit.The prior art is illegal devices that can disable this immobilizer. They are plugged into the diagnostic connector of the electronics and they are programmed to hand over the expected code to the original immobilizer of the vehicle, with the result that the transfer of this code is replaced by the transponder in the ignition key. The vehicle is then ready to drive.

Aufgabe der Erfindung ist es, serienmäßige Wegfahrsperren gegen diese illegale Manipulation zu sichern. Die Aufgabe wird damit gelöst, dass in die serienmäßige Wegfahrsperre ein zweites, handelsübliches RFID-System integriert und durch ein ebenfalls handelsübliches Relais ergänzt wird. Dies wie folgt:
In der Elektronik wird das Kabel getrennt, das den Stromkreis für die serienmäßige Wegfahrsperre bildet. Die Kabelenden werden mit dem Relais in der Weise verbunden, dass das Relais den Stromkreis schließen und unterbrechen kann. Das Relais wird durch ein Lesegerät gesteuert, das ebenfalls in das Gehäuse der Elektronik eingebaut wird und von der Autobatterie mit Strom versorgt wird. Vom Lesegerät führen Kabel zur Sendeantenne im Wageninneren, die dort prinzipiell an jedem beliebigen Ort nachgerüstet werden können. Der zugehörige Tranponder kann ebenfalls auf jede beliebige Weise dem Fahrer zur Verfügung gehalten werden. Beispielsweise als passiver Transponder in einem Anhänger zum Zündschlüssel oder als semi-aktiver Tranponder, mit dem das Lesegerät aus größerer Entfernung angesprochen werden kann.
The object of the invention is to secure standard immobilizers against this illegal manipulation. The object is achieved in that in the standard immobilizer, a second, commercially available RFID system is integrated and supplemented by a likewise commercially available relay. This as follows:
In the electronics, the cable is disconnected, which forms the circuit for the standard immobilizer. The cable ends are connected to the relay in such a way that the relay can close and interrupt the circuit. The relay is controlled by a reader, which is also installed in the housing of the electronics and powered by the car battery. From the reader cable lead to the transmitting antenna inside the car, which can be retrofitted there in principle anywhere. The associated Tranponder can also be held in any way available to the driver. For example, as a passive transponder in a trailer to the ignition key or as a semi-active Tranponder, with which the reader can be addressed from a distance.

Aktiviert wird diese nachgeschaltete Wegfahrsperre nach der Erfindung damit, dass die Zündung unterbrochen, der Motor also abgestellt wird. Dies führt dazu, dass die serienmäßige Wegfahrsperre mit der Folge aktiviert wird, dass in ihrem Kabel kein Strom mehr fließt. Dies wieder ist für das Relais das Signal, dass es wieder in die Ausgangsstellung zurückgeht, mit der Folge, dass der Stromkreis der serienmäßigen Wegfahrsperre wieder unterbrochen ist. Wird in diesem Zustand die illegale Vorrichtung in den Diagnosestecker eingesteckt, dann bleibt sie wirkungslos, weil sie außer Stande ist, den Stromkreis der serienmäßigen Wegfahrsperre zu schließen. Der Dieb stellt fest, dass seine Vorrichtung nicht funktioniert und er wird in der Regel auf eine Fehlersuche verzichten und den Diebstahlsversuch beenden (Anspruch 1).This downstream immobilizer is activated according to the invention so that the ignition is interrupted, so the engine is turned off. As a result, the standard immobilizer is activated with the result that no more current flows in its cable. This again is for the relay the signal that it goes back to the starting position, with the result that the circuit of the standard immobilizer is interrupted again. If the illegal device is plugged into the diagnostic connector in this state, then it remains ineffective because it is unable to close the circuit of the standard immobilizer. The thief notes that his device is not working and he will usually forgo troubleshooting and end the theft attempt (claim 1).

Würde der Dieb das Gehäuse der Elektronik öffnen, würde er – hinreichende Fachkunde vorausgesetzt – allerdings sofort erkennen, weshalb seine Vorrichtung nicht funktioniert. Er könnte dann das Relais von der Leitung der serienmäßigen Wegfahrsperre trennen und die nunmehr freien Leitungsenden verbinden mit der Folge, dass er den serienmäßigen Zustand wieder geschaffen hat, den seine illegale Vorrichtung voraussetzt. Um diese Möglichkeit zu verhindern, wird nach der Erfindung vorgeschlagen, in das Gehäuse der Elektronik eine säuregefüllte Ampulle so zu befestigen, dass sie durch das Öffnen des Elektronikgehäuses zerstört wird mit der Folge, dass die Säure die Elektronik insgesamt zerstört, womit es wieder unmöglich wird, das Fahrzeug in Gang zu setzen (Anspruch 2).If the thief opened the housing of the electronics, he would - however, given sufficient expertise - but immediately recognize why his device does not work. He could then disconnect the relay from the original immobilizer line and connect the now free line ends, with the result that he has recreated the standard state that his illegal device requires. To prevent this possibility, it is proposed according to the invention, in the housing of the electronics to attach an acid-filled ampoule so that it is destroyed by the opening of the electronics housing with the result that the acid destroys the electronics as a whole, making it impossible again to start the vehicle (claim 2).

Claims (2)

Elektronische Wegfahrsperre für Kraftfahrzeuge, dadurch gekennzeichnet, dass im Gehäuse der Elektronik in das Kabel der serienmäßigen Wegfahrsperre ein Relais integriert ist, das den Stromkreis im Kabel nach den Signalen unterbricht bzw. schließt, die es vom Lesegerät eines RFID-Systems empfängt, das von der Autobatterie mit Strom versorgt wird und dessen Sendeantenne an einem beliebigen Platz außerhalb des Elektronikgehäuses angebracht ist.Electronic immobilizer for motor vehicles, characterized in that in the housing of the electronics in the cable of the standard immobilizer, a relay is integrated, which interrupts the circuit in the cable after the signals or receives it from the reader of an RFID system that receives from the Car battery is powered and its transmitting antenna is mounted anywhere outside the electronics housing. Wegfahrsperre nach Anspruch 1, dadurch gekennzeichnet, dass in dem Elektronikgehäuse eine säuregefüllte Ampulle so befestigt ist, dass sie beim Öffnen des Gehäuses zerbricht und die Säure in die Elektronik fließt.Immobilizer according to claim 1, characterized in that in the electronics housing an acid-filled ampoule is attached so that it breaks when opening the housing and the acid flows into the electronics.
DE201110110142 2011-08-15 2011-08-15 Standard electronic immobilizer for motor car, has relay disconnecting and/or closing electric circuit in cable according to signals, which are received from reader of radio frequency identification system Ceased DE102011110142A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201110110142 DE102011110142A1 (en) 2011-08-15 2011-08-15 Standard electronic immobilizer for motor car, has relay disconnecting and/or closing electric circuit in cable according to signals, which are received from reader of radio frequency identification system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110110142 DE102011110142A1 (en) 2011-08-15 2011-08-15 Standard electronic immobilizer for motor car, has relay disconnecting and/or closing electric circuit in cable according to signals, which are received from reader of radio frequency identification system

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DE102011110142A1 true DE102011110142A1 (en) 2013-02-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105264309A (en) * 2013-04-01 2016-01-20 冷王公司 System and method for preventing unauthorized modification to engine control software or an engine control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309342A1 (en) * 1993-03-23 1994-09-29 Siegfried Menz Protection system, in particular anti-theft protection system for motor vehicles
DE4432539C2 (en) * 1993-12-02 1996-09-26 Alfred Zielke Immobilizer for a motor vehicle with a battery lock

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309342A1 (en) * 1993-03-23 1994-09-29 Siegfried Menz Protection system, in particular anti-theft protection system for motor vehicles
DE4432539C2 (en) * 1993-12-02 1996-09-26 Alfred Zielke Immobilizer for a motor vehicle with a battery lock

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105264309A (en) * 2013-04-01 2016-01-20 冷王公司 System and method for preventing unauthorized modification to engine control software or an engine control system
EP2981773A4 (en) * 2013-04-01 2017-01-25 Thermo King Corporation System and method for preventing unauthorized modification to engine control software or an engine control system
US9803610B2 (en) 2013-04-01 2017-10-31 Thermo King Corporation System and method for preventing unauthorized modification to engine control software or an engine control system
US9920733B2 (en) 2013-04-01 2018-03-20 Thermo King Corporation System and method for preventing unauthorized modification to engine control software or an engine control system

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R012 Request for examination validly filed
R073 Re-establishment requested
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20140301

R074 Re-establishment allowed
R074 Re-establishment allowed

Effective date: 20140919

R002 Refusal decision in examination/registration proceedings
R003 Refusal decision now final
R003 Refusal decision now final

Effective date: 20141202