Vehicle theft prevention control method based on epb

Abstract

The application discloses a vehicle anti-theft control method based on an EPB, and comprises the following steps: when a vehicle is in an anti-theft state, an anti-theft system of the vehicle establishes communication with an EPB control unit; after confirming that the communication is established, the anti-theft system of the vehicle and the EPB control unit perform unlocking authentication; and if the anti-theft system of the vehicle and the EPB control unit do not pass the unlocking authentication, the EPB control unit is prohibited from controlling a parking actuator. The EPB is combined with the anti-theft system, the control of anti-theft is realized without increasing the hardware cost, and the anti-theft performance of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor vehicle theft prevention, in particular to the protection of unauthorized use of a vehicle. More specifically, the present application relates to a vehicle theft prevention control method based on EPB. BACKGROUND

[0002] Existing vehicles generally meet vehicle theft prevention regulatory requirements through the cooperation of the power system and the steering wheel column lock, but the installation of a dedicated steering wheel column lock for vehicle theft prevention increases the overall vehicle cost and weight. Other devices such as P-lock or shift lock are also used to achieve vehicle theft prevention, which also increases the overall vehicle cost.

[0003] The electronic parking brake system (EPB) is currently widely used in various vehicles, and its functions cover parking brake and driving auxiliary brake, which can make the vehicle stop and prevent it from driving away after being illegally stolen. The existing EPB system is an electric control system, which can facilitate signal authentication and interaction with the vehicle theft prevention system without additional cost, and is easy to integrate with the existing vehicle theft prevention system. The use of vehicle power system plus EPB to meet the theft prevention regulations has also attracted widespread attention in the automotive industry. In this context, a vehicle theft prevention control method based on EPB is proposed to achieve vehicle theft prevention without additional component investment. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art and provide a vehicle theft prevention control system and method based on EPB, which uses the on-board EPB to achieve theft prevention control.

[0005] To achieve the above purpose, the technical solution adopted by the present application is as follows: a vehicle theft prevention control method based on EPB, comprising,

[0006] When the vehicle is in a theft prevention state, the vehicle theft prevention system establishes communication with the EPB control unit;

[0007] After confirming the establishment of communication, the vehicle theft prevention system and the EPB control unit perform unlock authentication;

[0008] If the vehicle theft prevention system and the EPB control unit fail to pass the unlock authentication, the EPB control unit is prohibited from controlling the parking actuator.

[0009] When the vehicle theft prevention system and the EPB control unit fail to pass the unlock authentication, the vehicle theft prevention system prohibits the vehicle power source from starting.

[0010] The unlock authentication of the vehicle theft prevention system and the EPB control unit includes confirming the following three aspects of information:

[0011] a. The EPB control unit and the vehicle theft prevention system perform encryption authentication to confirm whether the current theft prevention system is the legal controller of the vehicle;

[0012] b. confirming the vehicle theft risk information detected by the vehicle anti-theft system;

[0013] c. confirming the vehicle theft risk information detected by the EPB control unit;

[0014] When the encryption authentication is passed and neither the vehicle anti-theft system nor the EPB control unit detects the vehicle theft risk, the unlocking authentication is passed; otherwise, the unlocking authentication is not passed.

[0015] The unlocking authentication step is integrated in the vehicle anti-theft system or the EPB control unit, when it is performed in the vehicle anti-theft system, the state information of the unlocking authentication result is sent by the vehicle anti-theft system; when it is performed in the EPB control unit, the state information of the unlocking authentication result is sent by the EPB control unit.

[0016] The detection of the vehicle theft risk by the EPB control unit is performed by the state information of the EPB system and the vehicle saved last time when the EPB is turned off, the monitoring or detection information of the EPB to the actuator.

[0017] The vehicle anti-theft system comprises a keyless entry and start system PEPS and / or a body controller BCM.

[0018] The communication between the vehicle anti-theft system and the EPB control unit is performed by using a communication network or a serial communication mode to establish a communication connection.

[0019] The EPB control unit is an independent EPB controller or an EPB control module integrated in other controllers in the vehicle.

[0020] After the unlocking authentication is passed, the EPB control unit is allowed to control the actuator, and the EPB control unit controls the parking actuator according to the control signal; otherwise, the EPB controller cannot control the actuator.

[0021] The control method has the advantages of high safety, low cost and good energy saving, and has the beneficial effects that:

[0022] 1. High safety: the EPB control unit is matched with the vehicle anti-theft system to realize the vehicle anti-theft, which can effectively prevent the vehicle from driving away under the condition that the unlocking authentication is not satisfied.

[0023] 2. Low cost: the EPB is used as the locking actuator of the vehicle anti-theft system, and the vehicle does not need to install other anti-theft special components such as steering column lock or gear lock, thereby reducing the part cost and assembly cost of the vehicle. DETAILED DESCRIPTION

[0024] The content expressed by each figure in the specification of the application and the marks in the figure are briefly described as follows:

[0025] Figure 1 is a structural schematic diagram of the present application;

[0026] Figure 2 is a state logic schematic diagram of the present application.

[0027] The reference numerals in the figure are respectively: 11, EPB control unit; 12, actuator; 13, vehicle anti-theft system; 14, engine system. DETAILED DESCRIPTION

[0028] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0029] The present application combines the anti-theft system with the EPB system in order to achieve anti-theft, and realizes the parking locking of the EPB through anti-theft detection, thereby improving the safety and anti-theft function of the vehicle, and the specific scheme is as follows:

[0030] The EPB is woken up before the vehicle engine or other main power source of the vehicle is started (S1), and the vehicle anti-theft system and the EPB control unit establish communication (S2); the communication is usually based on the vehicle bus and encryption algorithm, and realizes the information interaction between the vehicle anti-theft system and the EPB control unit. Before the power source of the vehicle is started, the vehicle belongs to the off state, and belongs to the anti-theft defense state, and the vehicle anti-theft system and the EPB control unit establish communication (S2) in the defense state, and realize real-time communication interaction.

[0031] After confirming the establishment of communication (S2), the vehicle anti-theft system and the EPB control unit perform unlocking authentication (S3);

[0032] If the vehicle anti-theft system and the EPB control unit do not pass the unlocking authentication (S3), the vehicle anti-theft system prohibits the vehicle engine or other main power source of the vehicle to start. If the unlocking authentication (S3) is not passed, the vehicle power is limited, and since the EPB control unit is accessed, the action of the EPB actuator is controlled by prohibiting the EPB control unit, so as to ensure that the vehicle is in the parking state when the authentication is not passed.

[0033] The unlocking authentication includes the confirmation of the following three aspects of information:

[0034] a. The EPB control unit and the vehicle anti-theft system perform encryption authentication to confirm whether the current anti-theft system is the legal controller of the vehicle; the two perform encryption authentication, and pass the encryption and authentication to determine whether it is the corresponding legal controller;

[0035] b. Confirm the vehicle theft risk information detected by the vehicle anti-theft system;

[0036] c. confirming the vehicle theft risk information detected by the EPB control unit;

[0037] When the encryption authentication is passed and neither the vehicle theft prevention system nor the EPB control unit detects the vehicle theft risk, the unlock authentication is allowed to pass; otherwise, the unlock authentication is not allowed to pass.

[0038] After the unlock authentication (S3) is passed, the EPB control unit allows the control of the actuator (S4); otherwise, the EPB control unit prohibits the control of the actuator (S5), the EPB prohibits the actuator from working, so that the actuator keeps the vehicle in the parking lock state.

[0039] The determination of the unlock authentication can be made in the vehicle theft prevention system, and the state information of the unlock authentication result (S6) is sent by the vehicle theft prevention system; the determination of the unlock authentication can also be made in the EPB control unit, and the state information of the unlock authentication result is sent by the EPB control unit; the authentication can be realized by the controller which makes the data processing determination, which can be integrated in the EPB or the theft prevention system. The EPB control unit can be an independent EPB controller, or an EPB control module integrated in other controllers.

[0040] The detection of the vehicle theft risk by the EPB control unit is made by the state information of the EPB system and the vehicle saved last time when the EPB is turned off, the monitoring or detection information of the EPB to the actuator, to determine whether the current vehicle has a theft risk.

[0041] The vehicle theft prevention system is usually a keyless entry and start system PEPS, a body controller BCM and other systems related to vehicle theft prevention. Taking the PEPS module as an example, it realizes interaction with the EPB system control unit through communication. When the PEPS module is a legal controller, the authentication between the two is passed and neither the PEPS module nor the EPB detects theft, the PEPS module can send a control signal to control the EPB to allow the actuator to work, and the vehicle is unlocked or parked when the EPB receives the unlock information.

[0042] The above-described communication can include LIN, CAN, CAN-FD, FlexRay, Ethernet and other communication network communications, or SPI and other serial port communications in the present application. It is mainly used to realize the communication connection between the PEPS module and the EPB module.

[0043] As shown in Figure 1 , Figure 2 , the present application is a vehicle theft prevention control method based on EPB.

[0044] In the drawings:

[0045] →, indicates the line connection and direction;

[0046] - represents a connected module;

[0047] In order to further improve the application and development of the prior art, improve the security of vehicle theft prevention and reduce the cost, the technical scheme adopted by the present application is:

[0048] The present application provides a vehicle theft prevention control method based on EPB, which aims to realize vehicle theft prevention by combining EPB with a vehicle theft prevention system, and specifically provides a vehicle theft prevention control method with high security and low cost.

[0049] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0050] Before the vehicle power is started, the vehicle theft prevention system 13 establishes communication with the EPB control unit 11, which is usually based on the vehicle bus and encryption algorithm, to realize information exchange between the vehicle theft prevention system 13 and the EPB control unit 11.

[0051] After confirming the establishment of communication, the vehicle theft prevention system 13 and the EPB control unit 11 perform unlocking authentication.

[0052] If the vehicle theft prevention system 13 and the EPB control unit 11 fail to pass the unlocking authentication, the vehicle theft prevention system 13 prohibits the vehicle engine system 14 from starting.

[0053] The unlocking authentication includes confirmation of the following three aspects of information:

[0054] a. The EPB control unit 11 performs encryption authentication with the vehicle theft prevention system 13 to confirm whether the current theft prevention system is the legal controller of the vehicle;

[0055] b. Confirm the vehicle theft risk information detected by the vehicle theft prevention system 11;

[0056] c. Confirm the vehicle theft risk information detected by the EPB control unit 13;

[0057] When the encryption authentication passes and neither the vehicle theft prevention system 13 nor the EPB control unit 11 detects a vehicle theft risk, the unlocking authentication is allowed to pass; otherwise, the unlocking authentication is not allowed to pass.

[0058] The EPB control unit 11 controls the actuator 12 of the EPB to realize EPB clamping and release.

[0059] The unlocking authentication can be determined in the vehicle theft prevention system 13, and the state information of the unlocking authentication result is sent by the vehicle theft prevention system 13; the unlocking authentication can also be determined in the EPB control unit 11, and the state information of the unlocking authentication result is sent by the EPB control unit 11;

[0060] After the unlocking authentication is passed, the EPB control unit 11 can control the actuator 12;Otherwise, the EPB controller 11 cannot control the actuator 12.

[0061] The EPB control unit 11 detects the risk of vehicle theft through the state information of the EPB system and the vehicle saved when the EPB last time is parked, the monitoring or detection information of the EPB to the actuator 12, to determine whether the current vehicle has a risk of theft.

[0062] The EPB control unit 11 equipped in the vehicle can be an independent EPB controller, or an EPB control module integrated in other controllers.

[0063] The vehicle anti-theft system 13 is usually a keyless entry and start system PEPS, a body controller BCM and other vehicle anti-theft related systems.

[0064] The above-described communication includes LIN, CAN, CAN-FD, FlexRay, Ethernet and other communication network communication, or SPI and other serial communication.

[0065] The whole vehicle described in the application includes but is not limited to passenger cars and commercial vehicles.

[0066] The EPB-based vehicle anti-theft control method of the application contains the above-mentioned embodiments.

[0067] The application can realize the following functions:

[0068] 1、The EPB control unit 11 can receive the public signal of the whole vehicle communication network, and can send the state signal to the whole vehicle communication network.

[0069] 2、The EPB control unit 11 can control the actuator 12 to perform the clamping and releasing functions of the EPB.

[0070] 3、The vehicle anti-theft system 13 can record the EPB working state, and meet the requirements of anti-theft regulations together with the EPB control unit 11.

[0071] 4、The EPB control unit 11 can detect the state and signal of the vehicle anti-theft system 13, and identify the current state of the vehicle.

[0072] The EPB-based vehicle anti-theft control method of the application can meet the requirements of anti-theft regulations without installing steering lock, P lock, gear lock and other configurations, realize the parking function, solve the safety of vehicle anti-theft system, and has the characteristics of high safety and low cost.

[0073] Obviously, the specific implementation of the present application is not limited by the above manner, as long as various non-essential improvements are made by adopting the method concept and technical solutions of the present application, which are within the protection scope of the present application.

Claims

1. An EPB-based vehicle theft prevention control method, characterized by: Comprising, When the vehicle is in the anti-theft state, the vehicle anti-theft system establishes communication with the EPB control unit; After confirming the establishment of communication, the vehicle anti-theft system and the EPB control unit perform unlocking authentication; If the vehicle anti-theft system and the EPB control unit fail to pass the unlocking authentication, the EPB control unit is prohibited from controlling the parking actuator; The unlocking authentication between the vehicle anti-theft system and the EPB control unit includes confirming the following three aspects of information: a. The EPB control unit and the vehicle anti-theft system perform encryption authentication to confirm whether the current anti-theft system is the legal controller of the vehicle; b. Confirm the vehicle theft risk information detected by the vehicle anti-theft system; c. Confirm the vehicle theft risk information detected by the EPB control unit; When the encryption authentication passes and neither the vehicle anti-theft system nor the EPB control unit detects a vehicle theft risk, the unlocking authentication passes; otherwise, the unlocking authentication fails; The detection of the vehicle theft risk by the EPB control unit is performed by using the state information of the EPB system and the vehicle saved at the last time the EPB is turned off, the monitoring or detection information of the EPB on the actuator to determine whether the current vehicle has a theft risk.

2. The EPB based vehicle theft control method as claimed in claim 1, wherein: When the vehicle anti-theft system and the EPB control unit fail to pass the unlocking authentication, the vehicle anti-theft system prohibits the vehicle power source from starting.

3. The EPB-based vehicle theft prevention control method of claim 1 or 2, wherein: The unlocking authentication step is integrated in the vehicle anti-theft system or the EPB control unit. When it is performed in the vehicle anti-theft system, the state information of the unlocking authentication result is sent by the vehicle anti-theft system; when it is performed in the EPB control unit, the state information of the unlocking authentication result is sent by the EPB control unit.

4. The EPB based vehicle theft control method as claimed in claim 1, wherein: The vehicle anti-theft system includes a keyless entry and start system PEPS and / or a body controller BCM.

5. A vehicle theft control method based on EPB according to any one of claims 1-3, characterized in that: The vehicle anti-theft system and the EPB control unit establish communication by using one or a combination of LIN, CAN, CAN-FD, FlexRay, Ethernet communication network, or SPI serial communication mode to establish communication connection.

6. A vehicle theft control method based on EPB according to any one of claims 1-3, characterized in that: The EPB control unit is an independent EPB controller or an EPB control module integrated in other controllers in the vehicle.

7. A vehicle theft control method based on EPB according to any one of claims 1-3, characterized in that: After the unlocking authentication passes, the EPB control unit is allowed to control the actuator, and the EPB control unit controls the parking actuator according to the control signal; otherwise, the EPB controller cannot control the actuator.

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