TWI262872B - A vehicle anti-thief system and its method - Google Patents

Abstract

A vehicle anti-thief system and its method includes an electronic control unit, multiple identify elements, and a transmitting net. The electronic control unit stores identification codes to identify the above-mentioned identified elements; each identified element stores only one identification code; the electronic control unit conduct identification process of these identify elements via the transmitting net. The electronic control unit allows the engine to start only when the identification code of the identify element and the identification code preset in the electronic control unit accords with each other, otherwise the engine is not allowed to start.

Description

1262872 V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a vehicle anti-theft system and method, and more particularly to a person who applies anti-theft to a vehicle interior network. [Prior Art] I mmb ο 1 izer is a kind of anti-theft security system. For example, the commonly used chip input key is part of Immobolizer. The main function of Immbolizer is to prevent the key from starting the vehicle without authorization. Immbolizer has also gradually become one of the common anti-theft devices for all vehicles. For example, the Republic of China Patent Bulletin No. 50067 3 "Anti-theft device for vehicles" has been disclosed by the Electronic Control Unit (ECU) by identifying a rotating device (such as a wafer key) carried by an approved user. The purpose of certification. However, although I匪b ο 1 i z e r can greatly improve the anti-theft performance of the vehicle, it provides two protection measures for the key and the chip identification code in the case of the wafer key, but it is not absolutely safe. Because the thief can still dismantle the ECU and the key on one of the cars and install it on another vehicle of the same type, the anti-theft measures of Im m b ο 1 i z e r can still be easily eliminated. Therefore, the current solution, in addition to the installation of Immbolize r in a position where the vehicle is not easily disassembled, still cannot find a specific effective anti-theft solution. In the further analysis of the reasons why the thief steals the car, in fact, after a considerable number of vehicles have been stolen, the thieves disassemble the vehicle parts and then sell the parts separately to obtain illegal profits. Therefore, if the thief’s car stealing motivation is eliminated, the vehicle parts cannot be transferred to other vehicles after being disassembled.

1262872 V. INSTRUCTIONS (2) The use of vehicle parts is unprofitable and naturally reduces the intent of thieves to steal cars. The reason is that the inventors have felt that the above-mentioned vehicle burglary can be improved, and the research and the application of the theory have been devoted, and finally the present invention has been proposed to rationally and effectively improve the above-mentioned defects. SUMMARY OF THE INVENTION One object of the present invention is to provide a vehicle anti-theft system and method for constructing an anti-theft system for a vehicle internal network, so that vehicle components can have an anti-theft effect. In order to achieve the above object, the present invention provides a vehicle theft prevention system, comprising: a transmission network; at least one identification component connected to the transmission network, the identification component has a memory, and the memory system stores an identification code; and an electronic The control unit is connected to the transmission network, and the electronic control unit has a memory for storing the identification code of the identification component; wherein the electronic control unit compares the memory of the memory and the electronic control unit stored in the identification component at the time of starting up Whether the individual identification codes are consistent. In order to achieve the above object, the present invention provides a vehicle anti-theft system vehicle anti-theft method, which is provided with an electronic control unit and a plurality of identification components in the vehicle, the method comprising the following steps: the electronic control unit selects the identification components to be confirmed; the electronic The control unit reads the selected internal identification code of the identification component; and whether the electronic control unit matches the identification code of the identification component with the identification code preset by the electronic control unit. In order to enable your review board to further understand the features and techniques of the present invention.

1262872 V. Description of invention (3)

Please refer to the following for a detailed description of the present invention. The drawings are provided for reference and description only, and are not intended to limit the embodiments. Figure. The vehicle anti-theft system of the present invention comprises a transmission network 13 and a plurality of identification elements 15 . The electronic control unit ii of the vehicle anti-theft system, wherein the electronic control unit 1 1 and the identification components 丨 5 are connected to the transmission network 1 3 ′ and are controlled by the electronic control unit 丨丨 via the transmission network 丨 3 and the identification elements 15 Confirm the identification of the component identity. The electronic control unit stores the identification code of each identification component 15 , and each identification component 丨 5 stores a unique identification code for the electronic control unit to confirm whether it has a legal identification code. The electronic control unit 1 1 confirms that the identification elements 15 are correct and then allows the vehicle engine to start. Transmission network 13 in this implementation refers to the c A N, L I N or SP I interface in the vehicle network. The detailed internal composition of the electronic control unit 1 can be seen in the second figure. The electronic control unit is internally provided with a microprocessor Π 1, a memory n 3 , an interface circuit Π 5, and a communication communication with the transmission network 13 11 7 and provide the diagnostic interface 11 9 for editing. The microprocessor Π 1 is an operation core, and the memory 1 1 3 is stored with an identification code for confirming the identity of the identification elements 15. The interface circuit 115 is a dedicated conversion circuit of CAN or LIN or is suitable for SP I. The decoding circuit of the communication interface, the microprocessor Π 1 can select the identification component 15 to be designated through the interface circuit 115. And inside the memory 11 3

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1262872 V. Description of the invention (4) The identification setting system can be connected to a diagnostic device 2 by the diagnostic interface 1 1 9 . When the identification component 15 is damaged and needs to be replaced, the identification code stored in the memory 11 3 must be reset. 'The diagnostic device 21 can input the data to the memory via the transmission line 23 to set the identification code and overwrite the original identification code of the replaced component, and the diagnostic interface i丨9 of the present embodiment is the KL丨ne interface.

The component of the identification component 15 can be referred to the third figure, and includes a communication port 105 communicating with the transmission network 13 , an interface circuit 1 5 1 and a memory 1 5 3 , wherein the memory 1 5 3 system A unique identification code is stored, and the identification component 15 is in this embodiment an EMS part or other control unit in the vehicle, and the EMS part is a TPS Sensor, IAT Sens〇r, Crank Sens〇r, CLT.

Engine, MAP Senses, 〇2 Sens〇r, Kn〇ck Sens〇r and other parts related to engine control, other control units in the vehicle are used to control the transmission system, battery system 'motor system, instrument panel, air conditioning system, The main components of the sound plastic are for the purpose of the controller. Please refer to the figure. Including the electronic control method, the identification code and the identification code of the electronic control unit memory can be selected for the solid 15 or not. The unit 11 allows Dan to depict the following steps: First, the identification is selected in the 7G 11 The meta-order, the order of change, or one or more of the identity determination elements 11 will be for the selected unique code (S4 0 3); then stored in advance in electronic control (S405); if the engine is started (S40 7); After the vehicle anti-theft system is turned on, the device 15 (S401) recognizes the action from the plurality of identification components by the selected number of random numbers; after the selection is completed, the identification component 15 reads the internal microprocessor 1 1 1 and compares the readback unit. 1 1 The result of the internal memory 113 is the same, then the electronic control is otherwise, the electronic control unit 丨1262872 5. The invention (5) I allows the engine to start (S40 9). Therefore, the vehicle anti-theft key provided by the present invention further provides the anti-theft identification of the net amp 畜 畜 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 Yak/5 is not seen or the identification component is not correct. Control:: I yuan does not allow the vehicle engine to be activated, to achieve the effect of lowering 丨#, because the thief will even be 2 J, the right is too small The component 15 of the car is disassembled and the identification of the anti-theft system is used. I. , . . . ά The other part of the car is also equipped with the vehicle anti-theft device of the present invention ==:: The identification code identification process will be incorrect, and Still, through the vehicle anti-theft system and method of the present invention, it has the characteristics as described in I. (1) The relationship between the electronic control early 70 and the vehicle β 4 components is constructed through a network to form a close connection relationship. To make the parts inside the car impossible | don't use it elsewhere. (2) The important components in the car have the unique identification code, so they also have the function of anti-theft. (3) After the wafer key is formed, an anti-theft protection net is formed to avoid the possibility that the electronic vehicle and the wafer key are replaced. In summary, the present invention fully complies with the requirements of the patent application, so the application is filed in accordance with the Patent Law. Please check and ask for the early benefit: to protect the benefits, if the review committee of the bureau has = I suspect, please do not hesitate to write a letter. Instructions. However, the above description is only the first embodiment of the preferred embodiment of the present invention. Page 10 1262872 V. DESCRIPTION OF THE INVENTION (6) Detailed description and drawings, the spirit of the scope of the patent application of the present invention is similarly changed. The embodiments are intended to be included in the scope of the present invention, and any changes or modifications that can be easily conceived in the field of the invention can be covered by the following patents.

11 126 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 A circuit block diagram of an electronic control unit connected to a diagnostic device in a vehicle theft prevention system; the third figure is a circuit block diagram depicting the main features of the identification component in the vehicle theft prevention system of the preferred embodiment of the present invention; and the fourth figure is Invented a vehicle flow chart. Figure No. 11 Electronic Control Unit 111 Microprocessor 11 Memory 1 1 7 Communication 埠 13 Transmission Network 1 5 1 Interface Circuit 1 5 5 Communication 埠 2 3 Transmission Line 1 1 5 Interface Circuit 1 1 9 Diagnosis 埠 15 Identification Component 1 5 3 Memory 21 Diagnostics

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Claims (1)

1262872 6. Patent application scope 1. A vehicle anti-theft system includes: a transmission network; at least one identification component is connected to the transmission network, the identification component has a memory, and the memory system stores an identification code; An electronic control unit is connected to the transmission network, and the electronic control unit has a memory for storing an identification code for identifying the identification component; wherein the electronic control unit compares the memory stored in the identification component when the device is powered on Whether the body and the individual identification code of the memory of the electronic control unit are consistent. 2. The vehicle theft prevention system of claim 1, wherein the transmission network is a C A N interface. 3. The vehicle theft prevention system of claim 1, wherein the transmission network is an L I N interface. 4. The vehicle theft prevention system of claim 1, wherein the transmission network is an SPI interface. 5. The vehicle theft prevention system of claim 1, wherein the identification component has a communication port connected to the transmission network. 6. The vehicle theft prevention system of claim 1, wherein the identification component further comprises an interface circuit. 7. The vehicle theft prevention system of claim 1, wherein the identification component is integrated into an EMS component. 8. The vehicle anti-theft system according to claim 7, wherein the EMS parts are TPS Sensor, IAT Sensor, Crank Page 13 1262872 VI. Patent Application Range Engine control parts for Sensor, CLT Sensor, MAP Sensor, 02 Sensor, Knock Sens or one of them. 9. The vehicle anti-theft system according to claim 1, wherein the identification component is a controller of one of an in-vehicle control transmission system, a battery system, a motor system, an instrument panel, an air conditioning system, and an audio system. The vehicle anti-theft system of claim 1, wherein the electronic control unit comprises: a communication port for connecting to the transmission network; a interface circuit connecting the communication port; and a micro The processor controls the operation of the electronic control unit and communicates with the identification component through the interface circuit. 1 1 . The vehicle antitheft system according to claim 10, wherein the interface circuit is a dedicated conversion circuit of CAN or L IN. 1 2 . The vehicle antitheft system according to claim 10, wherein the interface circuit is a decoding circuit suitable for the SP I communication interface. The vehicle anti-theft system of claim 10, wherein the electronic control unit further comprises a diagnostic interface for externally connecting a diagnostic device, and the electronic memory of the electronic control unit can be set by the diagnostic device. Identification code. 1 4. The vehicle anti-theft system according to claim 10, wherein the diagnostic interface is a K-L i n e interface. 1 5 . A vehicle anti-theft method, wherein an electronic control unit and a plurality of identification components are disposed in the vehicle, the method comprising the following steps: the electronic control unit selects the identification components to be confirmed; Page 14 1262872 6. Patent application scope The electronic control unit reads the selected internal identification code of the identification component; and the identification code of the identification component and the identification code preset by the electronic control unit Is it consistent? The vehicle anti-theft method of claim 15, wherein the electronic control unit selects the identification elements to be confirmed in a fixed order. The vehicle anti-theft method of claim 15, wherein the electronic control unit selects the identification elements to be confirmed in a changing order. The vehicle anti-theft method of claim 15, wherein the electronic control unit selects the identification elements to be confirmed by random numbers. 1 9 . The vehicle anti-theft method described in claim 15 of the patent application further includes the steps: the electronic control unit allows the engine to start when the comparison result is consistent. 2 0. The vehicle anti-theft method described in claim 15 of the patent scope further includes the steps: the electronic control unit does not allow the engine to start when the comparison result is inconsistent. Page 15