Vehicle anti-theft method and vehicle anti-theft system

Abstract

The invention relates to a vehicle anti-theft method and a vehicle anti-theft system. The vehicle anti-theft method is at least realized by a vehicle electronic anti-theft system, a chassis electronic control unit and an electronic parking brake. The method comprises the following steps: the chassis electronic control unit generates a random number and sends the random number to the vehicle electronic anti-theft system; executing anti-theft authentication between the chassis electronic control unit and the vehicle electronic anti-theft system based on the random number and PIN and key parameters initially configured in the chassis electronic control unit and the vehicle electronic anti-theft system, and obtaining an anti-theft authentication result; and the electronic parking brake controls whether to unlock a wheel caliper based on the anti-theft authentication result. According to the invention, the vehicle anti-theft method and the vehicle anti-theft system with higher safety and reliability can be provided.

Description

Technical Field

[0001] The invention relates to vehicle anti-theft technology, and in particular to a vehicle anti-theft method and a vehicle anti-theft system. Background Art

[0002] The existing vehicle anti-theft system does not include the chassis electronic control unit. Moreover, there is a problem of illegal replacement of the chassis electronic control unit during the after-sales vehicle replacement process, so there is a certain risk of theft and potential security loopholes. Summary of the invention

[0003] Based on the above problems in the prior art, the present invention aims to provide a vehicle anti-theft method and a vehicle anti-theft system with higher safety and reliability.

[0004] A vehicle anti-theft method according to one aspect of the present invention is implemented by at least a vehicle electronic anti-theft system, a chassis electronic control unit, and an electronic parking brake, and the method comprises the following steps:

[0005] A random number generation step, wherein the chassis electronic control unit generates a random number and sends the random number to the vehicle electronic anti-theft system;

[0006] an anti-theft authentication step, performing anti-theft authentication between the chassis electronic control unit and the vehicle electronic anti-theft system based on the random number and the PIN and key parameters initially configured in the chassis electronic control unit and the vehicle electronic anti-theft system and obtaining an anti-theft authentication result; and

[0007] The anti-theft control step, the chassis electronic control unit controls whether the electronic parking brake unlocks the wheel caliper based on the anti-theft authentication result.

[0008] A vehicle anti-theft system according to one aspect of the present invention comprises at least: a vehicle electronic anti-theft system, a chassis electronic control unit and an electronic parking brake.

[0009] Wherein, the chassis electronic control unit comprises:

[0010] A first configuration module, used for initial configuration of PIN and key parameters;

[0011] A random number generation module, used for generating a random number and sending the random number to the vehicle electronic anti-theft system;

[0012] A first anti-theft authentication module, which performs an anti-theft authentication action between the vehicle electronic anti-theft system based on the random number and the PIN and key parameters initially configured in the first configuration module and obtains an anti-theft authentication result; and

[0013] The anti-theft result output module is used to output the anti-theft authentication result.

[0014] The vehicle electronic anti-theft system comprises:

[0015] A second configuration module, used for initial configuration of PIN and key parameters;

[0016] A random number receiving module, configured to receive the random number from the chassis electronic control unit; and

[0017] A second anti-theft authentication module performs an anti-theft authentication action between the chassis electronic control unit system based on the random number and the PIN and key parameters initially configured in the second configuration module,

[0018] The electronic parking brake comprises:

[0019] A first anti-theft result receiving module, configured to receive the anti-theft authentication result from the chassis electronic control unit; and

[0020] The first anti-theft control module is used to control whether the electronic parking brake unlocks the wheel caliper based on the anti-theft authentication result.

[0021] According to the vehicle anti-theft method and vehicle anti-theft system of the present invention, by adding a chassis electronic control unit to an existing anti-theft system, a higher level of anti-theft encryption and security can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects and advantages of the present application will become more fully apparent from the following detailed description in conjunction with the accompanying drawings, in which the same or similar elements are represented by the same reference numerals.

[0023] Figure 1 It is a schematic diagram of the structure of a vehicle anti-theft system according to one embodiment of the present invention.

[0024] Figure 2 Schematic diagram showing the anti-theft action performed in the vehicle anti-theft system according to one embodiment of the present invention.

[0025] Figure 3 It is a flowchart of a specific example of the vehicle theft prevention method of the present invention.

[0026] Figure 4 It is a schematic diagram of a specific structure of a vehicle anti-theft system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following describes some of the various embodiments of the present invention, which are intended to provide a basic understanding of the present invention, but are not intended to identify the key or decisive elements of the present invention or to limit the scope of protection.

[0028] For the purpose of brevity and illustration, the principles of the present invention are described herein mainly with reference to its exemplary embodiments. However, those skilled in the art will readily recognize that the same principles are equally applicable to lane line detection methods and lane line detection systems for all types of lane line detection, and these same principles may be implemented therein, and any such changes do not depart from the true spirit and scope of the present patent application.

[0029] Moreover, in the following description, reference is made to the accompanying drawings, which illustrate specific exemplary embodiments. Electrical, mechanical, logical and structural changes may be made to these embodiments without departing from the spirit and scope of the present invention. In addition, although the features of the present invention are disclosed in conjunction with only one of several implementations / embodiments, this feature may be combined with one or more other features of other implementations / embodiments as may be desirable and / or advantageous for any given or identifiable function. Therefore, the following description should not be regarded as limiting, and the scope of the present invention is defined by the appended claims and their equivalents.

[0030] Terms such as “having” and “including” indicate that in addition to the units (modules) and steps directly and explicitly stated in the specification and claims, the technical solution of the present invention does not exclude the situation where it has other units (modules) and steps that are not directly or explicitly stated.

[0031] Figure 1 It is a schematic diagram of the structure of a vehicle anti-theft system according to one embodiment of the present invention.

[0032] like Figure 1 As shown, a vehicle anti-theft system according to an embodiment of the present invention includes: a vehicle electronic anti-theft system (IMMO) 100 , a chassis electronic control unit (Chassis ECU) 200 , a transmission electronic control unit (Transmission ECU) 300 , and a powertrain electronic control unit (Powertrain ECU) 400 .

[0033] First, the initial parameter configuration of the vehicle anti-theft system according to one embodiment of the present invention is described.

[0034] like Figure 1 As shown, the initial parameter configuration includes the following steps:

[0035] A1: The original equipment manufacturer (OEM) 900 injects the VIN information of the end-of-line (EOL) equipment into the vehicle electronic anti-theft system 100, calculates the corresponding unique PIN, writes the PIN into the vehicle electronic anti-theft system 100 through, for example, a diagnostic command, and the vehicle electronic anti-theft system 100 generates the corresponding SK (Secret Key) parameter;

[0036] A2: Use a security algorithm between the vehicle electronic anti-theft system 100 and the chassis electronic control unit 200 to write the PIN and SK parameters into the chassis electronic control unit 200 to complete the configuration of the chassis electronic control unit 200;

[0037] A3: Use a security algorithm between the vehicle electronic anti-theft system 100 and the transmission electronic control unit 300 to write the PIN and SK parameters into the transmission electronic control unit 300 to complete the configuration of the transmission electronic control unit 300;

[0038] A4: Use a security algorithm between the vehicle electronic anti-theft system 100 and the powertrain electronic control unit 400 to write the PIN and SK parameters into the powertrain electronic control unit 400 to complete the configuration of the powertrain electronic control unit 400.

[0039] Next, the parameter reconfiguration operation when the transmission ECU 300 and the powertrain ECU 400 are updated will be described.

[0040] like Figure 1 As shown, the parameter reconfiguration action includes:

[0041] B1: The chassis ECU 200 is used as the master device, and the diagnostic access algorithm is used to transmit the PIN and SK information to the transmission ECU 300 as the slave device, thereby completing the parameter reconfiguration of the transmission ECU 300;

[0042] B2: The chassis ECU 200 is used as the master device, and the diagnostic access algorithm is used to transmit the PIN and SK information to the powertrain ECU 400 as the slave device, thereby completing the parameter reconfiguration of the powertrain ECU 400.

[0043] The order of B1 and B2 is not limited. In addition, the above parameter reconfiguration action generally occurs in, for example, an after-sales 4S store.

[0044] Figure 2 Schematic diagram showing the anti-theft action performed in the vehicle anti-theft system according to one embodiment of the present invention.

[0045] like Figure 2 As shown, the authentication anti-theft action implemented in the vehicle anti-theft system of one embodiment of the present invention includes:

[0046] C1: Vehicle start;

[0047] C2: The chassis electronic control unit 200 checks the initial configuration (checks whether the PIN and SK parameters are initially configured) and generates a random number, and sends the random number to the vehicle electronic anti-theft system 100. The vehicle electronic anti-theft system 100 combines the received random number with the initially configured PIN and SK parameters to calculate and obtain a first anti-theft parameter value and returns the first anti-theft parameter value to the chassis electronic control unit 200;

[0048] C3: The chassis electronic control unit 200 calculates the second anti-theft parameter value according to the initially configured PIN and SK parameters and the random number generated above, and determines whether the first anti-theft parameter value and the second anti-theft parameter value returned from the vehicle electronic anti-theft system 100 are the same. If the two are the same, it means that the anti-theft authentication is successful (that is, the authentication result is a credible state), and the electronic parking brake 500 can send a command to the caliper 501 to unlock the wheel. If the two are not the same, it means that the anti-theft authentication fails (that is, the authentication result is an unreliable state), and the electronic parking brake 500 can send a command to the caliper 501 not to release the caliper to lock the wheel;

[0049] C4: The chassis ECU 200 sends the authentication result to the powertrain ECU 400 and the transmission ECU 300 through the bus 600;

[0050] C5: If the authentication result is that the status is untrustworthy, the powertrain electronic control unit 400 limits the power output of the engine 401 and enables the safety limited power transmission function. If the status is trustworthy, the previous power is maintained;

[0051] C6: If the authentication result is that the status is untrustworthy, the transmission electronic control unit 300 limits the power transmission of the transmission 301 and enables the safety limited power transmission function. If the status is trustworthy, the previous transmission is maintained;

[0052] C7: If the authentication result is that the status is untrustworthy, T-BOX (communication box) 700 sends an illegal access risk to the application through the network and sends a prompt to the user's mobile phone. If the status is credible, no warning is issued and the status is safe.

[0053] A specific example of the vehicle theft prevention method of the present invention is described below.

[0054] Figure 3 It is a flowchart of a specific example of the vehicle theft prevention method of the present invention.

[0055] like Figure 3 As shown, a specific example of the vehicle anti-theft method of the present invention mainly includes the following steps:

[0056] S1: Power on;

[0057] S2: The chassis electronic control unit detects whether it is in anti-theft mode. If so, it continues to S3, otherwise it jumps to S19;

[0058] S3: The chassis electronic control unit checks the initial configuration, that is, checks whether the PIN and SK parameters have been initially set. If so, continue to S4, otherwise jump to S20;

[0059] S4: The chassis electronic control unit generates a random number;

[0060] S5: The chassis electronic control unit sends the random number to the vehicle electronic anti-theft system;

[0061] S6: The vehicle electronic anti-theft system performs anti-theft calculation based on the initially set PIN and SK parameters and the random number received from the chassis electronic control unit;

[0062] S7: The vehicle electronic anti-theft system obtains a first anti-theft parameter value through anti-theft calculation;

[0063] S8: The chassis electronic control unit performs anti-theft calculation based on the PIN and SK parameters and the random number generated by itself;

[0064] S9: The chassis electronic control unit obtains a second anti-theft parameter value through anti-theft calculation;

[0065] S10: The chassis electronic control unit compares the first anti-theft parameter value and the second anti-theft parameter value to see if they are the same. If they are the same, the process continues to S11, otherwise, the process jumps to S13;

[0066] S11: Anti-theft authentication is successful;

[0067] S12: pre-release caliper and pre-unlock parking brake;

[0068] S13: Count the number of unsuccessful comparisons between the first and second anti-theft parameter values ​​to obtain a count value N. If N < a specified threshold, return to S4, otherwise continue to S14;

[0069] S14: Anti-theft authentication fails, proceed to S15, and at the same time proceed to S16 and its sub-steps S161 to S162, S17 and its sub-steps S171 and S172, S18 and its sub-step S181;

[0070] S15: The caliper is not released, and an anti-theft alarm is issued (for example, a flashing light is emitted);

[0071] S16: transmitting the anti-theft authentication failure result to the powertrain electronic control unit;

[0072] S161: The powertrain electronic control unit receives an anti-theft authentication failure result, which means that untrusted access has been received, and the powertrain needs to be restricted;

[0073] S162: Limit the engine power output and enable the safety limited power transmission function;

[0074] S17: transmitting the anti-theft authentication failure result to the transmission electronic control unit;

[0075] S171: The transmission electronic control unit receives an anti-theft authentication failure result, which means that an untrusted access has been received, and the transmission needs to be restricted;

[0076] S172: Limit the power transmission of the transmission and enable the safety limited power transmission function;

[0077] S18: The anti-theft authentication failure result is transmitted to the T-BOX;

[0078] S181: T-BOX receives the anti-theft authentication failure result, which means that it has received untrusted access, and needs to send the illegal access risk to the application through the network;

[0079] S19: non-anti-theft mode and jump to S21;

[0080] S20: Reports initial configuration failure and jumps to S21;

[0081] S21: End.

[0082] Next, the specific structure of the vehicle antitheft system of the present invention will be described.

[0083] Figure 4 It is a schematic diagram of a specific structure of a vehicle anti-theft system according to an embodiment of the present invention.

[0084] like Figure 4 The vehicle anti-theft system according to an embodiment of the present invention includes: a vehicle electronic anti-theft system 100 , a chassis electronic control unit 200 , a transmission electronic control unit 300 , a powertrain electronic control unit 400 and an electronic parking brake 500 .

[0085] The vehicle electronic anti-theft system 100 comprises:

[0086] A first configuration module 110, used for initial configuration of PIN and key parameters;

[0087] A random number receiving module 120, configured to receive a random number from the chassis electronic control unit; and

[0088] The first anti-theft authentication module 130 performs an anti-theft authentication action between the chassis electronic control unit system based on the random number and the PIN and key parameters initially configured in the first configuration module.

[0089] The chassis electronic control unit 200 includes:

[0090] A second configuration module 210, for initially configuring PIN and key parameters;

[0091] A random number generation module 220, configured to generate a random number and send the random number to the vehicle electronic anti-theft system; and

[0092] A second anti-theft authentication module 230, which performs an anti-theft authentication action between the vehicle electronic anti-theft system based on the random number and the PIN and key parameters initially configured in the second configuration module and obtains an anti-theft authentication result; and

[0093] The anti-theft result output module 240 is used to output the anti-theft authentication result.

[0094] The transmission electronic control unit 300 includes:

[0095] A third configuration module 310 is used to write the PIN and the key parameters from the vehicle electronic anti-theft system into the transmission electronic control unit;

[0096] A third anti-theft result receiving module 320 is used to receive the anti-theft authentication result from the chassis electronic control unit; and

[0097] The third anti-theft control module 330 is used to limit the power transmission of the transmission based on the anti-theft authentication result and whether to enable the safety limit power transmission function.

[0098] The powertrain electronic control unit 400 includes:

[0099] A fourth configuration module 410, configured to write the PIN and the key parameters from the vehicle electronic anti-theft system into the powertrain electronic control unit;

[0100] a fourth anti-theft result receiving module 420, configured to receive the anti-theft authentication result from the chassis electronic control unit; and

[0101] The fourth anti-theft control module 430 is configured to determine whether to limit the power output of the engine and enable a safety limited power transmission function based on the anti-theft authentication result.

[0102] The electronic parking brake 500 includes:

[0103] A first anti-theft result receiving module 510 is used to receive the anti-theft authentication result from the chassis electronic control unit; and

[0104] The first anti-theft control module 520 is configured to control whether the electronic parking brake unlocks the wheel caliper based on the anti-theft authentication result.

[0105] As described above, according to the vehicle anti-theft method and vehicle anti-theft system of the present invention, by adding anti-theft authentication between the chassis electronic control unit and the vehicle wireless key system, the third level of anti-theft encryption when the vehicle is started can be achieved. Moreover, in the case of successful anti-theft authentication, it is set to pre-unlock the wheel calipers through the parking brake system. In the case of failed anti-theft authentication, the chassis electronic control unit enters a non-safe mode and prevents the wheels from unlocking and the vehicle from driving freely through the electronic parking brake. Further, the chassis electronic control unit can also transmit the result of the failed anti-theft authentication to the powertrain electronic control unit and the transmission electronic control unit, and can also transmit the result of the failed anti-theft authentication to the user application through T-BOX to prompt the user of the risk.

[0106] On the other hand, the vehicle anti-theft method and vehicle anti-theft system according to the present invention can also solve the problem of illegal changes of chassis electronic control units when replacing different vehicles in the aftermarket, ensuring the unique matching of products and vehicles. Moreover, when replacing new powertrain electronic control units and transmission electronic control units in 4S stores, PIN and SK information can be learned to other electronic control units based on the initial configuration of the chassis electronic control unit, which can avoid complex reconfiguration by OEM.

[0107] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art can think of other feasible changes or substitutions based on the technical scope disclosed in the present application, and such changes or substitutions are all included in the protection scope of the present application. In the absence of conflict, the implementation modes of the present application and the features in the implementation modes can also be combined with each other. The protection scope of the present application shall be subject to the description of the claims.

Claims

1. A vehicle anti-theft method, characterized in that: The vehicle anti-theft method is implemented by at least a vehicle electronic anti-theft system, a chassis electronic control unit and an electronic parking brake, and the method comprises: A random number generation step, wherein the chassis electronic control unit generates a random number and sends the random number to the vehicle electronic anti-theft system; an anti-theft authentication step, performing anti-theft authentication between the chassis electronic control unit and the vehicle electronic anti-theft system based on the random number and the PIN and key parameters initially configured in the chassis electronic control unit and the vehicle electronic anti-theft system and obtaining an anti-theft authentication result; and The anti-theft control step, the electronic parking brake controls whether to unlock the wheel caliper based on the anti-theft authentication result.

2. The vehicle anti-theft method according to claim 1, characterized in that: Before the random number generation step, the method further comprises: The initial configuration step is to pre-write the PIN into the vehicle electronic anti-theft system and generate a key parameter corresponding to the PIN in the vehicle electronic anti-theft system, and write the PIN and the key parameter from the vehicle electronic anti-theft system into the chassis electronic control unit.

3. The vehicle anti-theft method according to claim 1, characterized in that: The vehicle anti-theft method is implemented by a vehicle electronic anti-theft system, a chassis electronic control unit, a transmission electronic control unit, a powertrain electronic control unit and an electronic parking brake. The initial setup step further comprises: Writing the PIN and the key parameters from the vehicle electronic anti-theft system into the transmission electronic control unit; and The PIN and the key parameters are written from the vehicle electronic anti-theft system to the powertrain electronic control unit.

4. The vehicle anti-theft method according to claim 3, characterized in that: The method further comprises: An update configuration step is performed. When updating the configuration of the transmission electronic control unit, the chassis electronic control unit is used as a master device, and the PIN and the key information written in the chassis electronic control unit are transmitted to the transmission electronic control unit as a slave device. When updating the configuration of the powertrain electronic control unit, the chassis electronic control unit is used as a master device, and the PIN and the key information written in the chassis electronic control unit are transmitted to the powertrain electronic control unit as a slave device.

5. The vehicle anti-theft method according to claim 4, characterized in that: The anti-theft authentication step includes: The vehicle electronic anti-theft system calculates a first anti-theft parameter value based on the received random number, the initially configured PIN and the key parameter, and sends the first anti-theft parameter value to the chassis electronic control unit; and The chassis electronic control unit calculates a second anti-theft parameter value based on the initially configured PIN and the key parameter, and determines whether the first anti-theft parameter value and the second anti-theft parameter value sent from the vehicle electronic anti-theft system are the same. If the two are the same, the anti-theft authentication result is that the anti-theft authentication is successful; if the two are different, the anti-theft authentication result is that the anti-theft authentication fails.

6. The vehicle anti-theft method according to claim 5, characterized in that: The anti-theft control step includes: In case the anti-theft authentication is successful, the electronic parking brake is controlled so that the caliper is released to unlock the wheel; or In the event of a failure in the anti-theft authentication, the electronic parking brake is controlled so as not to release the caliper to lock the wheel.

7. The vehicle anti-theft method according to claim 6, characterized in that: The anti-theft control step further comprises: If the anti-theft authentication fails, perform one or more of the following actions: The powertrain electronic control unit performs control to limit the power output of the engine and enable a safety limited power transmission function; The transmission electronic control unit performs control to limit the power transmission of the transmission and enable a safety limited power transmission function; and The anti-theft authentication failure result is notified to the mobile terminal corresponding to the vehicle through T-BOX.

8. A vehicle anti-theft system, characterized in that: At least including the vehicle electronic anti-theft system, chassis electronic control unit and electronic parking brake, The vehicle electronic anti-theft system comprises: A first configuration module, used for initial configuration of PIN and key parameters; A random number receiving module, configured to receive a random number from the chassis electronic control unit; and a first anti-theft authentication module, which performs an anti-theft authentication action between the chassis electronic control unit system based on the random number and the PIN and key parameters initially configured in the first configuration module, The chassis electronic control unit comprises: A second configuration module, used for initial configuration of PIN and key parameters; A random number generation module, used to generate a random number and send the random number to the vehicle electronic anti-theft system; and A second anti-theft authentication module, which performs an anti-theft authentication action between the vehicle electronic anti-theft system based on the random number and the PIN and key parameters initially configured in the second configuration module and obtains an anti-theft authentication result; and The anti-theft result output module is used to output the anti-theft authentication result. The electronic parking brake comprises: A first anti-theft result receiving module, configured to receive the anti-theft authentication result from the chassis electronic control unit; and The first anti-theft control module is used to control whether the electronic parking brake unlocks the wheel caliper based on the anti-theft authentication result.

9. The vehicle anti-theft system according to claim 8, characterized in that: further comprising a transmission electronic control unit, The transmission electronic control unit comprises: A third configuration module, used to write the PIN and the key parameters from the vehicle electronic anti-theft system into the transmission electronic control unit; A third anti-theft result receiving module, configured to receive the anti-theft authentication result from the chassis electronic control unit; and The third anti-theft control module is used to determine whether to limit the power transmission of the transmission and whether to enable a safety limited power transmission function based on the anti-theft authentication result.

10. The vehicle anti-theft system according to claim 9, characterized in that: further comprising a powertrain electronic control unit, The powertrain electronic control unit comprises: a fourth configuration module, configured to write the PIN and the key parameters from the vehicle electronic anti-theft system into the powertrain electronic control unit; a fourth anti-theft result receiving module, configured to receive the anti-theft authentication result from the chassis electronic control unit; and The fourth anti-theft control module is used to determine whether to limit the power output of the engine and whether to enable the safety limited power transmission function based on the anti-theft authentication result.

11. A computer readable medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the vehicle anti-theft method according to any one of claims 1 to 7 is implemented.

12. A computer device comprising a storage module, a processor, and a computer program stored in the storage module and executable on the processor, characterized in that: When the processor executes the computer program, the vehicle anti-theft method according to any one of claims 1 to 7 is implemented.

13. A vehicle, characterized in that: A vehicle anti-theft system comprising any one of claims 8 to 10.

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