Anti-theft system and method based on vehicle-mounted controller, and vehicle

Abstract

The present invention discloses an anti-theft system and method based on a vehicle-mounted controller, and a vehicle, wherein the system includes a stolen signal acquisition module and a vehicle-mounted TBOX, wherein the stolen signal acquisition module acquires a stolen status signal of the vehicle, and its output end is connected to the vehicle-mounted TBOX, and the vehicle-mounted TBOX drives the vehicle horn to send out an anti-theft alarm when the vehicle is in a theft state, and sends the alarm information to the owner's mobile phone APP based on the vehicle networking system to remind the owner. Based on the three controllers of BCM, VCU, and TBOX, it is judged whether to turn on the anti-theft in different situations, which can greatly increase the safety of the vehicle and protect the owner's assets.

Description

Technical Field

[0001] The present application relates to the field of automobile anti-theft, and in particular to an anti-theft system and method based on an on-board controller for a new energy automobile, and an automobile. Background Art

[0002] With the support of policies, new energy vehicles are occupying an increasingly larger share in the market, but there will also be more and more thefts. In response to this situation, anti-theft devices and anti-theft strategies have emerged. The anti-theft strategy of the existing technology of automobiles is only to give a warning by sounding an alarm through the horn after detecting the risk of theft. However, this type of anti-theft system still has defects. For example, the alarm alone cannot notify the owner, and the horn alarm is useless if there is no one nearby. Therefore, the vehicle anti-theft system of the existing technology needs to be upgraded and improved. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an anti-theft system based on a vehicle-mounted controller, which can achieve anti-theft by sending reminders to vehicle owners, restricting vehicle operation, etc., making anti-theft more secure and reliable.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an anti-theft system based on a vehicle-mounted controller, including a stolen signal acquisition module and a vehicle-mounted TBOX. The stolen signal acquisition module collects the stolen status signal of the vehicle, and its output end is connected to the vehicle-mounted TBOX. When the vehicle is in a theft state, the vehicle-mounted TBOX drives the vehicle horn to issue an anti-theft alarm and sends the alarm information to the owner's mobile phone APP based on the vehicle networking system to remind the owner.

[0005] The stolen signal acquisition module includes a vehicle broken window detection unit, which is used to detect the theft risk caused by the broken vehicle window, and its output end is connected to the vehicle-mounted TBOX.

[0006] The stolen signal acquisition module also includes a BCM and a mechanical unlocking detection unit. The mechanical unlocking detection unit is used to detect whether the door lock is opened mechanically. Its output end is connected to the BCM. After the door lock is opened mechanically, the BCM searches for the remote control key within the communication range based on the radio frequency key module. If the radio frequency signal emitted by the remote control key is not detected within the communication range for Ts, the BCM outputs that the vehicle is in theft status to the on-board TBOX.

[0007] The stolen signal acquisition module also includes a vehicle speed acquisition unit, a high-voltage state acquisition unit, and a VCU. The vehicle speed acquisition unit and the high-voltage state acquisition unit respectively acquire the vehicle speed and the high-voltage state of the vehicle, and their output ends are connected to the VCU; the VCU determines whether the vehicle is in a stolen state based on the high-voltage state and the vehicle speed of the vehicle, and sends a stolen signal value to the on-board TBOX when the vehicle is in a stolen state.

[0008] In the high-voltage state, the VCU detects whether the vehicle meets the high-voltage conditions and the BCM detects whether the vehicle ignition is high-voltage according to the set order. If any condition is not met, a stolen signal is sent to the on-board TBOX.

[0009] When the vehicle is powered on, the BCM detects the status of the central lock and feeds it back to the TBOX. The TBOX obtains the vehicle's door opening and closing times through the door opening and closing times module. If the vehicle's door opening and closing times are the same as the times stored at the last power failure, the TBOX determines that the vehicle is in a stolen state.

[0010] An anti-theft method based on a vehicle controller includes: when a vehicle is detected to be stolen, the TBOX sends the stolen information to the vehicle owner's mobile phone terminal through a wireless signal to remind the owner; at the same time, the BCM drives the vehicle speaker to sound an alarm.

[0011] After detecting that the door lock is unlocked by the mechanical key, the BCM is awakened and searches for the remote control key based on the on-board RF module; if the remote control key signal is not found within the RF communication range of the on-board RF module for Ts, the stolen status is fed back to TBOX.

[0012] When the vehicle is not on high voltage, the VCU detects that the vehicle speed is greater than the speed threshold and determines that the vehicle is in a stolen state. The VCU sends a stolen signal to the vehicle-mounted TBOX;

[0013] When the vehicle is high-voltage, the VCU detects whether the high-voltage conditions are met and the BCM detects whether the high-voltage is applied in the order of the key lock cylinder signal. If any of the conditions is not met, it is determined that the vehicle is in a stolen state, and the stolen signal is fed back to the VCU and TBOX. The VCU limits the torque output and requests the corresponding braking torque based on the vehicle speed.

[0014] When the vehicle is powered on and the BCM detects that the central lock is not opened, the TBOX reads the number of door openings and closings and compares the number of door openings and closings stored at this time with the number of door openings and closings when the power was last turned off to see if they are the same. If they are the same, it is determined that the vehicle is in a stolen state.

[0015] When the vehicle is detected to be in a vibrating state, it is determined that the vehicle is in a stolen state, and the stolen state is transmitted to TBOX.

[0016] A car comprises an anti-theft system based on a vehicle-mounted controller or comprises an anti-theft method based on a vehicle-mounted controller.

[0017] The advantages of the present invention are: using a vehicle-mounted controller for data collection and anti-theft judgment and processing, saving hardware costs and being able to accurately and reliably detect thefts in various situations, being able to promptly issue an alarm and promptly notify the vehicle owner; being able to identify various theft states and being able to limit the output power of the vehicle or request braking torque to limit the operation of the vehicle when theft occurs, making the vehicle unable to move and ensuring the safety of vehicle property; the three controllers, BCM, VCU, and TBOX, make judgments on whether to turn on the anti-theft function in different situations, which can greatly increase the safety of the vehicle and protect the vehicle owner's assets. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0019] Figure 1 The figure is a schematic diagram of the structure of the anti-theft system based on the vehicle-mounted controller of the present invention. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0021] The present application provides an anti-theft system and anti-theft method based on a vehicle-mounted controller, which can identify and alarm the theft status and remotely remind based on the vehicle-mounted controller and components. The specific scheme is as follows:

[0022] like Figure 1 As shown, an anti-theft system based on a vehicle-mounted controller includes a stolen signal acquisition module and a vehicle-mounted TBOX. The stolen signal acquisition module collects the stolen status signal of the vehicle, and its output end is connected to the vehicle-mounted TBOX. When the vehicle is in a theft state, the vehicle-mounted TBOX drives the vehicle horn to issue an anti-theft alarm and sends the alarm information to the owner's mobile phone APP based on the vehicle networking system to remind the owner.

[0023] The stolen signal acquisition module mainly uses vehicle-mounted components to detect the status of the vehicle and thus give a stolen status signal; when the vehicle-mounted TBOX determines that the vehicle is in a stolen state, it sends an alarm signal to the vehicle networking APP through the vehicle networking system to remind the owner to check and facilitate the owner to quickly obtain the alarm signal at any time.

[0024] In this application, the stolen signal acquisition module specifically includes:

[0025] The stolen signal acquisition module includes a vehicle window break detection unit, which is used to detect the theft risk caused by the vehicle window breakage, and its output end is connected to the vehicle-mounted TBOX. The vehicle window break detection unit uses a vibration sensor to detect the vibration of the vehicle and other conditions, so as to determine the theft risk caused by the broken window.

[0026] For other theft risks, this application mainly uses the vehicle controller BCM and some vehicle components for detection. The mechanical unlocking detection unit is used to detect whether the door lock is opened mechanically. Its output end is connected to the BCM. After the door lock is opened mechanically, the BCM searches for the remote control key in the communication range based on the radio frequency key module. If the radio frequency signal emitted by the remote control key is not detected within the communication range for Ts, the BCM outputs that the vehicle is in theft state to the vehicle TBOX.

[0027] The stolen signal acquisition module includes a vehicle speed acquisition unit, a high-voltage state acquisition unit, and a VCU. The vehicle speed acquisition unit and the high-voltage state acquisition unit respectively collect the vehicle speed and the high-voltage state of the vehicle, and their output ends are connected to the VCU; the VCU determines whether the vehicle is in a stolen state based on the vehicle's high-voltage state and vehicle speed, and sends a stolen signal value to the on-board TBOX when the vehicle is in a stolen state.

[0028] In the high-voltage state, the VCU detects whether the vehicle meets the high-voltage conditions and the BCM detects whether the vehicle ignition is high-voltage according to the set order. If any condition is not met, a stolen signal is sent to the on-board TBOX.

[0029] When the vehicle is powered on, the BCM detects the status of the central lock and feeds it back to the TBOX. The TBOX obtains the vehicle's door opening and closing times through the door opening and closing times module. If the vehicle's door opening and closing times are the same as the times stored at the last power failure, the TBOX determines that the vehicle is in a stolen state.

[0030] The working principle of the present application, that is, the monitoring method, includes the following: when it is detected that the vehicle is in a stolen state, the TBOX sends the theft information to the owner's mobile phone terminal through a wireless signal for reminder; at the same time, the BCM drives the vehicle speaker to sound an alarm.

[0031] After detecting that the door lock is unlocked by the mechanical key, the BCM is awakened and searches for the remote control key based on the on-board RF module; if the remote control key signal is not found within the RF communication range of the on-board RF module for Ts, the stolen status is fed back to TBOX.

[0032] When the vehicle is not on high voltage, the VCU detects that the vehicle speed is greater than the speed threshold and determines that the vehicle is in a stolen state. The VCU sends a stolen signal to the vehicle-mounted TBOX;

[0033] When the vehicle is high-voltage, the VCU detects whether the high-voltage conditions are met and the BCM detects whether the high-voltage is applied in the order of the key lock cylinder signal. If any of the conditions is not met, it is determined that the vehicle is in a stolen state, and the stolen signal is fed back to the VCU and TBOX. The VCU limits the torque output and requests the corresponding braking torque based on the vehicle speed.

[0034] When the vehicle is powered on and the BCM detects that the central lock is not opened, the TBOX reads the number of door openings and closings and compares the number of door openings and closings stored at this time with the number of door openings and closings when the power was last turned off to see if they are the same. If they are the same, it is determined that the vehicle is in a stolen state.

[0035] When it is detected that the vehicle is in a vibrating state, it is determined that the vehicle is in a stolen state, and the stolen state is transmitted to TBOX.

[0036] The present application provides a car, which includes an anti-theft system based on a vehicle-mounted controller of the present application or an anti-theft method based on a vehicle-mounted controller of the present application.

[0037] 1. This controller operates based on the original strategy of the anti-theft system. BCM judges the situation inside the car and feeds back information to VCU and TBOX. VCU and TBOX respond after receiving the corresponding signals.

[0038] 2. Anti-theft strategy

[0039] 1) After the owner powers off the vehicle and locks the door remotely, the body controller executes the central control lock. When the door lock is unlocked mechanically, the BCM is awakened and uses radio frequency to find whether the remote control key is nearby. If the remote control key is nearby and feedbacks a signal, the BCM does not perform anti-theft processing. If the remote control key signal is not received within 10S (calibrable), it is fed back to TBOX, and TBOX responds. The BCM and VCU simultaneously determine whether the key lock cylinder signal and power-on conditions are normally powered on as required. A series of judgments and processing are made.

[0040] 3. Anti-theft judgment and processing

[0041] When BCM does not receive the feedback signal from the remote control key, it will feed back the situation to TBOX, and TBOX will send the situation to the collection terminal via wireless signals to prompt the owner.

[0042] 1) When the vehicle is not on high voltage and the VCU detects that the vehicle has a certain speed (which can be calibrated), it sends an anti-theft signal to the BCM. The BCM sounds an alarm and feeds back to the TBOX, which performs the same operation as above.

[0043] 2) When the vehicle is high-voltage, the VCU detects whether the high-voltage conditions are met, and the BCM detects whether the high-voltage is applied in the order of the key lock cylinder signal OFF ACC ON START. If yes, the anti-theft system is not triggered. If not, the anti-theft system is triggered and the signal is fed back to the VCU and TBOX. The VCU limits the torque output. When the vehicle speed is detected, the corresponding torque is requested (specific strategy calibration is required) to make the vehicle unable to move. The TBOX performs terminal alarm processing and the BCM sounds an alarm.

[0044] 3) When entering the cab through the window. If the power is on, the BCM detects that the central lock is not opened and feeds back to TBOX. TBOX reads the number of door openings and closings. If the number is the same as the last power failure, it enters the anti-theft judgment (remote control key interaction starts), and can also judge the opening angle of the window.

[0045] 4) If there is no power, the VCU will be awakened when the handbrake signal changes, and the VCU will wake up the BCM and make an anti-theft judgment.

[0046] If only items in the cab are stolen and the windows are broken, the vehicle sensor will sense the vibration and wake up the BCM to enter the anti-theft judgment.

[0047] The three controllers, BCM, VCU and TBOX, can determine whether to turn on the anti-theft function in different situations. They can prevent theft and greatly increase the safety of the vehicle and protect the owner's assets.

[0048] 1. When some thieves come to steal, the controller on the car can determine whether the vehicle has been stolen through multiple situations and multiple states, and take some measures.

[0049] 3. The anti-theft system processing method determined by the controller mainly includes the following parts (VCU, CAN network, BCM, TBOX, mobile terminal, remote control key)

[0050] 4. Figure 1 This is a simple connection diagram of VCU, CAN network, BCM, TBOX, mobile terminal, and MCU

[0051] Definition of professional terms:

[0052] CANL: Low-speed CAN

[0053] CANL: High-speed CAN

[0054] KL30: Low voltage battery positive electrode

[0055] KL31: Low voltage battery negative electrode

[0056] BCM: Body Controller

[0057] VCU: Vehicle Controller

[0058] TOBX: Wireless Terminal

[0059] Remote control key: interact with the vehicle body controls

[0060] Mobile terminal: receive vehicle information fed back by TBOX

[0061] Vehicle Controller VCU Function Introduction:

[0062] 1. Obtain driving intention: VCU needs to judge driving intention through driving input signals such as accelerator pedal, brake pedal, gear status, etc.

[0063] 2. Obtain the actual status of the vehicle: VCU needs to obtain operating information such as vehicle speed and posture through sensors or controllers to determine the current actual status of the vehicle.

[0064] 3. Power control: VCU needs to match driving requirements and powertrain response capabilities, and formulate reasonable power output and energy recovery strategies

[0065] 4. Information feedback: VCU needs to send key information to the instrument panel to inform the driver of the vehicle status.

[0066] 5. Realize the judgment and decision of vehicle failure, vehicle failure record, etc.;

[0067] 6. It has a safety protection function, which can grade the whole vehicle according to the fault type. In an emergency, it can directly shut down the power output and cut off the high-voltage system.

[0068] 7: Communicate with BMS, OBC, DCDC, MCU and other controllers through CAN bus. In some cases, it may be necessary to communicate with the body control unit through LIN bus.

[0069] Body Controller BCM Introduction:

[0070] 1. Receive information input from sensors or other devices and convert the input information into signals that can be received by the microprocessor;

[0071] 2. Store, calculate, analyze and process information, analyze the program used for output values, store the characteristic parameters of the vehicle model, the data in operation (store and retrieve at any time), and store fault information;

[0072] 3. Operation analysis. Calculate the execution command data based on the information parameters, compare the input information with the standard value, and investigate the fault.

[0073] 4. Output execution command. Convert weak signal into execution command, output fault information, and self-correct.

[0074] Introduction to TBOX: It consists of four parts: host, vehicle-mounted T-BOX, mobile phone APP and background system.

[0075] CAN bus introduction:

[0076] CAN is the abbreviation of Controller Area Network. CAN is a field bus for communication between controllers. The CAN bus was first used in the automotive industry and was first proposed by the German Bosch Group. Due to the continuous increase in automotive functional requirements and the exponential increase in electronic devices, the communication signal wiring method between controllers is complicated. Therefore, a single network bus is designed, and all controllers of the vehicle can be connected to this network.

[0077] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. An anti-theft system based on a vehicle-mounted controller, characterized in that: It includes a stolen signal acquisition module and a vehicle-mounted TBOX. The stolen signal acquisition module collects the stolen status signal of the vehicle, and its output end is connected to the vehicle-mounted TBOX. When the vehicle is in a stolen state, the vehicle-mounted TBOX drives the vehicle horn to sound an anti-theft alarm and sends the alarm information to the owner's mobile phone APP based on the vehicle networking system to remind the owner; In the high-voltage state, the VCU detects whether the vehicle meets the high-voltage conditions and the BCM detects whether the vehicle ignition is high-voltage according to the set order. If any of the conditions is not met, a theft signal is sent to the vehicle TBOX; When the vehicle is powered on and the BCM detects that the central lock is not opened, the BCM detects the status of the central lock and feeds back to the TBOX. The TBOX obtains the number of door openings and closings of the vehicle through the door opening and closing times module. The TBOX reads the number of door openings and closings and compares the number of door openings and closings stored at this time with the number of door openings and closings at the last power failure. If the number of door openings and closings at this time is the same as the number stored at the last power failure, the TBOX determines that the vehicle is in a stolen state.

2. The anti-theft system based on the vehicle controller as claimed in claim 1, characterized in that: The stolen signal acquisition module includes a vehicle broken window detection unit, which is used to detect the theft risk caused by the broken vehicle window, and its output end is connected to the vehicle-mounted TBOX.

3. The anti-theft system based on the vehicle controller as claimed in claim 1, characterized in that: The stolen signal acquisition module also includes a BCM and a mechanical unlocking detection unit. The mechanical unlocking detection unit is used to detect whether the door lock is opened mechanically. Its output end is connected to the BCM. After the door lock is opened mechanically, the BCM searches for the remote control key within the communication range based on the radio frequency key module. If the radio frequency signal emitted by the remote control key is not detected within the communication range for Ts, the BCM outputs that the vehicle is in theft status to the on-board TBOX.

4. The anti-theft system based on the vehicle controller as claimed in claim 3, characterized in that: The stolen signal acquisition module also includes a vehicle speed acquisition unit, a high-voltage state acquisition unit, and a VCU. The vehicle speed acquisition unit and the high-voltage state acquisition unit respectively acquire the vehicle speed and the high-voltage state of the vehicle, and their output ends are connected to the VCU; the VCU determines whether the vehicle is in a stolen state based on the vehicle's high-voltage state and vehicle speed, and sends a stolen signal to the on-board TBOX when the vehicle is in a stolen state.

5. An anti-theft method based on a vehicle-mounted controller, characterized in that: When the vehicle is detected to be stolen, TBOX sends the stolen information to the owner's mobile phone terminal via wireless signals to remind the owner; at the same time, BCM drives the vehicle speaker to sound an alarm; In the high-voltage state, the VCU detects whether the vehicle meets the high-voltage conditions and the BCM detects whether the vehicle ignition is high-voltage according to the set order. If any of the conditions is not met, a theft signal is sent to the vehicle TBOX; When the vehicle is powered on and the BCM detects that the central lock is not opened, the BCM detects the status of the central lock and feeds back to the TBOX. The TBOX obtains the number of door openings and closings of the vehicle through the door opening and closing times module. The TBOX reads the number of door openings and closings and compares the number of door openings and closings stored at this time with the number of door openings and closings at the last power failure. If the number of door openings and closings at this time is the same as the number stored at the last power failure, the TBOX determines that the vehicle is in a stolen state.

6. The anti-theft method based on the vehicle-mounted controller as claimed in claim 5, characterized in that: After detecting that the door lock is unlocked by the mechanical key, the BCM is awakened and searches for the remote control key based on the on-board RF module; if the remote control key signal is not found within the RF communication range of the on-board RF module for Ts, the stolen status is fed back to TBOX.

7. The anti-theft method based on the vehicle-mounted controller as claimed in claim 5, characterized in that: When the vehicle is not on high voltage, the VCU detects that the vehicle speed is greater than the speed threshold and determines that the vehicle is in a stolen state. The VCU sends a stolen signal to the vehicle-mounted TBOX; The vehicle has high voltage, the VCU detects whether the high voltage conditions are met, and the BCM detects whether the high voltage is applied in the order of the key lock cylinder signal; If any of the conditions is not met, the vehicle is judged to be in a stolen state, and the stolen signal is fed back to the VCU and TBOX. The VCU limits the torque output and requests the corresponding braking torque based on the vehicle speed. When the vehicle is powered on and the BCM detects that the central lock is not opened, the TBOX reads the number of door openings and closings and compares the number of door openings and closings stored at this time with the number of door openings and closings when the power was last turned off to see if they are the same. If they are the same, it is determined that the vehicle is in a stolen state. When the vehicle is detected to be in a vibrating state, it is determined that the vehicle is in a stolen state, and the stolen state is transmitted to TBOX.

8. A car, characterized in that: The automobile comprises an anti-theft system based on a vehicle-mounted controller as described in any one of claims 1-4 or an anti-theft method based on a vehicle-mounted controller as described in any one of claims 5-7.

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