CN201544913U

CN201544913U - Automobile generator anti-theft device

Info

Publication number: CN201544913U
Application number: CN2009201802061U
Authority: CN
Inventors: 陈泽坚
Original assignee: Atech Automotive Wuhu Co Ltd
Current assignee: Atech Automotive Wuhu Co Ltd
Priority date: 2009-10-29
Filing date: 2009-10-29
Publication date: 2010-08-11
Anticipated expiration: 2019-10-29

Abstract

The utility model discloses an automobile generator anti-theft device which comprises a code responder, coils, a generator anti-theft base station and a generator control module, and is characterized in that the code responder generates signals to transport to the coils, and then transports to an LIN transceiver through the generator anti-theft base station and transports to the main control unit, and the main control unit transports processed signals to the generator control module through a CAN transceiver. Because of using the structure, the automobile generator anti-theft device has the advantages that: 1, the automobile generator anti-theft device achieves the anti-theft function, and greatly reduces the stolen risk of automobiles. 2, the automobile generator anti-theft device uses original electronic components in an automobile combined meter, treats anti-theft signals, and reduces the production cost of generator anti-theft devices.

Description

A kind of automotive engine anti-joyride device

Relate to the field

The utility model relates to vehicle electric field, particularly a kind of automotive engine anti-joyride device.

Background technology

Auto-industry constantly develop, automobile more and more enters into our life, along with the universal people of automobile are also more and more higher to the requirement of automobile burglar, because automobile door lock has certain mutual opening rate, reduced the anti-theft feature of automobile, so people have developed anti-theft locking system of engine.For the car that anti-theft locking system of engine is housed, even cartheft can be opened the car door automobile that also can't drive away.

Present anti-theft locking system of engine is electronic chip to be housed in the automotive ignition key, fixing ID all is housed in each chip, when having only the ID of key chip consistent with the ID of driving engine one side, automobile could start, on the contrary, if inconsistent, automobile is automatic shutdown circuit at once, and driving engine can't be started.Present vehicle major part both domestic and external has all been equipped engine theftproof system and combination instrument, general engine theftproof system and combination instrument chamber are two cover systems independently, circuit such as main control chip, base station and communication circuit are generally arranged in the engine anti-theft controller, and cost is higher.Provide that a kind of to have the automotive engine anti-joyride device of anti-theft feature and reduce production costs be the problem that prior art need solve.

The utility model content

Technical problem to be solved in the utility model is, a kind of automotive engine anti-joyride device is provided, to reach realization to automotive engine anti-theft feature and the purpose that reduces production costs.

For solving the problems of the technologies described above, the technical solution of the utility model is, a kind of automotive engine anti-joyride device, comprise password responser, coil, engine anti-theft base station, engine control module, it is characterized in that: described password responser generation signal passes to coil and passes to the LIN transceiver and pass to main control unit by the engine anti-theft base station again, the signal that main control unit will be handled again passes to engine control module by the CAN transceiver, thereby driving engine is realized anti-theft feature.

Described LIN transceiver, main control unit, CAN transceiver are arranged in the automobile combination meter, just have electronic component to realize the automotive engine anti-theft feature in the automobile combination meter originally thereby utilize, and have reduced productive costs.

Described engine anti-theft base station is connected with the LIN transceiver by the LIN bus.

Described CAN transceiver is connected with engine control module by the CAN bus.

The chip that adopts in the described engine anti-theft base station is PCF7992.

A kind of automotive engine anti-joyride device, owing to adopt said structure, this device has the following advantages: 1, driving engine has been realized anti-theft feature, significantly reduced the stolen danger of automobile; 2, utilize original electronic component in the automobile combination meter, anti-theft signal is handled, reduced the productive costs of engine anti-theft device.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;

Fig. 1 is the structural representation of a kind of automotive engine anti-joyride device of the utility model;

In Fig. 1,1, the password responser; 2, coil; 3, engine anti-theft base station; 4, LIN transceiver; 5, main control unit; 6, CAN transceiver; 7, engine control module; 8, combination instrument.

The specific embodiment

As shown in Figure 1, a kind of automotive engine anti-joyride device, comprise password responser 1, coil 2, engine anti-theft base station 3, engine control module 7, it is characterized in that: described password responser 1 generation signal passes to coil 2 and passes to LIN transceiver 4 and pass to main control unit 5 by engine anti-theft base station 3 again, the signal that main control unit 5 will be handled again passes to engine control module 7 by CAN transceiver 6, thereby driving engine is realized anti-theft feature.

Described LIN transceiver 4, main control unit 5, CAN transceiver 6 are arranged in the automobile combination meter 8, just have electronic component to realize the automotive engine anti-theft feature in the automobile combination meter 8 originally thereby utilize, and have reduced productive costs.

Described engine anti-theft base station 3 is connected with LIN transceiver 4 by the LIN bus.

Described CAN transceiver 6 is connected with engine control module 7 by the CAN bus.

The chip that adopts in the described engine anti-theft base station 3 is PCF7992.

A kind of automotive engine anti-joyride device comprises: password responser 1, coil 2, engine anti-theft base station 3 and anti-theft module.Wherein, engine anti-theft base station 3 has the LIN communication function, is arranged near the antitheft coil 2; Anti-theft module comprises LIN transceiver 4 and main control unit 5, is integrated in the automobile combination meter 8.

Password responser 1 is issued engine anti-theft base station 3 by coil 2 with information, the base station with message pick-up after, be converted into the LIN signal, LIN transceiver 4 receives the information that the base station sends by the LIN line, be decrypted checking by main control unit 5, checking is passed through, and combination instrument 8 is set up with engine control module 7 and communicated by letter, and engine control module 7 is decrypted checking; The checking of engine control module 7 is also passed through, and the system verification of whole engine anti-theft is passed through, and can carry out engine ignition and start.

By the engine anti-theft function is integrated in the automobile combination meter 8, all master chip that arrives in original engine anti-theft module, electronic devices and components such as communication circuit can share with the electronic devices and components in the combination instrument, when keeping safe class, have saved integral vehicle cost.

As shown in Figure 1, native system will be integrated in reception in the engine anti-theft controller originally and send the information of password responser and to the work of deciphering of password responser and checking separately, the chip PCF7992 of the engine anti-theft base station 3 of the password responser information that receives is branched away separately, be placed near the antenna, and to the decryption verification of password responser information be integrated in the automobile combination meter 8 with functions such as communicating by letter of engine control module.

The chip of engine anti-theft base station 3 adopts PCF7992, and PCF7992 is integrated LIN communication function on the basis of PCF7991.The password responser is issued base station ic PCF7992 by antitheft coil 2 with low frequency signal and is decrypted, and the low frequency signal after chip PCF7992 will decipher is converted to the LIN signal, issues main control unit 5 in the combination instrument by the LIN bus.

Comprise LIN transceiver 4 and main control unit 5 in the combination instrument, LIN transceiver 4 is received the LIN signal that base station ic sends, be decrypted checking by main control unit 5, if the checking between main control unit 5 in the combination instrument 8 and the password responser is passed through, main control unit 5 is encrypted by another kind of algorithm, combination instrument 8 will be set up by the CAN bus with engine control module 7 and communicate by letter, engine control module 7 also will be decrypted checking, if the checking of engine control module 7 is also passed through, the checking of whole engine theftproof system is passed through, and can carry out engine ignition.

The main effect of engine anti-theft base station 3 is to convert the LIN signal to password responser 1 communication and checking and with low frequency signal.Wherein 20 pin of PCF7992 connect automotive battery, power to the base station; 4 pin, 5 pin connect external coil, are used for receiving and transmitting the information and the energy of base station and password responser; 18 pin connect the LIN bus, and the low frequency signal after chip PCF7992 will decipher is converted into the LIN signal and issues main control unit 5 in the combination instrument by the LIN bus.

The interface circuit of LIN transceiver 4, wherein the 18 pin LIN buses of CON1 and PCF7992 are joined, LININ links to each other with the micro controller system in the instrument with LIN OUT, and micro controller system carries out encrypting and decrypting by software algorithm with the LIN signal, issues engine control module by the CAN bus then.

CAN bus interface circuit in the combination instrument 8, the car body controller design that has the CAN interface is the core and key of bus development, wherein the CAN bus module of car body controller has several functional units to constitute---CAN controller and CAN transceiver.The CAN agreement of CAN controller complete is finished communication function, comprises message buffer and accepts filter.Need an interface---CAN transceiver between CAN controller and the physical bus, it realizes the conversion of logic level signal between CAN controller and the bus.CAN controller and transceiver are finished all functions of CAN Physical layer and decision circuit layer.The function of application layer is then realized by software.Master chip PD78F0828 is that inside itself has the CAN controller, so externally increase a CAN transceiver.Selected high-speed CAN transceiver TJA1040 in the design for use, speed can reach 1Mbaud, and this chip has outstanding car body controller performance, and desirable advantages such as passive performance are arranged under situation about not powering on.

In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection domain of the present utility model.

Claims

1. automotive engine anti-joyride device, comprise password responser (1), coil (2), engine anti-theft base station (3), engine control module (7), it is characterized in that: described password responser (1) generation signal passes to coil (2) and passes to LIN transceiver (4) and pass to main control unit (5) by engine anti-theft base station (3) again, and the signal that main control unit (5) will be handled again passes to engine control module (7) by CAN transceiver (6).

2. a kind of automotive engine anti-joyride device according to claim 1 is characterized in that: described LIN transceiver (4), main control unit (5), CAN transceiver (6) are arranged in the automobile combination meter (8).

3. a kind of automotive engine anti-joyride device according to claim 1 is characterized in that: described engine anti-theft base station is connected with the LIN transceiver by the LIN bus.

4. a kind of automotive engine anti-joyride device according to claim 1 is characterized in that: described CAN transceiver is connected with engine control module by the CAN bus.

5. a kind of automotive engine anti-joyride device according to claim 1 is characterized in that: the chip that adopts in the described engine anti-theft base station is PCF7992.