A vehicle intelligent control system and method based on an electromagnetic power master switch

Abstract

The application provides a vehicle intelligent control method based on an electromagnetic power switch, which comprises the following steps: step 1, a body control module receives a key insertion signal, controls a power switch control loop K to be closed, controls an electromagnetic power switch K2 to be closed, and enables a vehicle controlled circuit; step 2, a reset type power control switch K3 is triggered, a power control switch signal is sent to the body control module, the body control module does not respond to the signal, the power switch control loop K is kept closed, the electromagnetic power switch K2 is kept closed, and the vehicle controlled circuit is kept connected; step 3, the body control module controls the power switch control loop K to be disconnected, the electromagnetic power switch K2 to be disconnected, and the vehicle controlled circuit to be disconnected; and step 4, the body control module controls the power switch control loop K to be disconnected, the electromagnetic power switch K2 to be disconnected, and the vehicle controlled circuit to be disconnected.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a vehicle intelligent control system and method based on an electromagnetic main power switch. Background Art

[0002] According to the requirements of relevant laws and regulations (GB7258 "Technical Conditions for Motor Vehicle Operation Safety" stipulates that special school buses should be equipped with a main power switch, and passenger buses with a length of 6m or more should be equipped with an electromagnetic main power switch; GB20300 "Technical Conditions for Safety of Vehicles Transporting Explosives and Highly Toxic Chemicals on Roads": For cars and trailers transporting explosives and highly toxic chemicals on the road, a control device for opening and closing the main power switch should be installed in the cab; GB21668 "Structural Requirements for Dangerous Goods Transport Vehicles" stipulates that N and O class vehicles transporting dangerous goods and trains consisting of N class vehicles and one O class vehicle should be equipped with a control device for opening and closing the main power switch in the cab), electromagnetic main power switches will be used on school buses, cars and trailers transporting dangerous goods and other vehicles. The traditional electromagnetic main power switch control system consists of an electromagnetic main power switch and a self-locking power control switch, such as Figure 2 As shown in the figure, after entering the vehicle, the driver manually operates the self-locking power control switch K1, energizing the electromagnetic main power switch control circuit. When the switch power main switch is energized, the moving contact closes, closing switch contact K2 and thus connecting the vehicle's power circuit. Before leaving the vehicle, the driver manually operates the self-locking power control switch K1, disconnecting the electromagnetic main power switch control circuit. When the switch power main switch is de-energized, the moving contact releases, opening switch contact K2 and thus disconnecting the vehicle's power circuit. While the electromagnetic main power switch control circuit is energized, the operating current of the main power switch control circuit is high. Under normal vehicle operation, after the vehicle is started, the generator (or DC / DC converter for new energy vehicles) operates, and this operating current does not cause any problems. However, when the vehicle is parked and the ignition is turned off, the generator (or DC / DC converter for new energy vehicles) stops operating, relying solely on the battery for power. If this operating current persists for a long time, it can deplete the battery, preventing the vehicle from starting properly. Secondly, if the electromagnetic main power switch is left disconnected while a person is away from the vehicle, the controlled power circuit of the vehicle may be energized, posing a safety hazard and violating the intended regulatory requirements. Even in extreme operating conditions, such as when the driver misoperates or a vehicle malfunction disconnects the control circuit of the power control switch, this can cause the vehicle to lose power and stall while in motion, potentially leading to a traffic accident and posing a significant safety hazard. Summary of the Invention

[0003] Therefore, the application provides a vehicle intelligent control system and method based on an electromagnetic power switch to solve the technical problems of power consumption and power supply of a battery in a stop and start condition, forgetting to disconnect the electromagnetic power switch in a personnel leaving vehicle condition, misoperation of a driver or vehicle failure leading to a traffic accident.

[0004] The application provides a vehicle intelligent control system based on an electromagnetic power switch, which comprises a vehicle body control module for collecting vehicle signals, a power switch control loop, an electromagnetic power switch and a power switch control circuit.

[0005] Further, the vehicle signals comprise an ignition key signal, a power control switch trigger signal, an engine shutdown signal and a vehicle door locking signal.

[0006] Further, the ignition key signal comprises an ignition key insertion signal, a vehicle power signal and an ignition switch control power.

[0007] Further, the vehicle body control module is further used for: when the vehicle is stationary and the power control switch trigger signal is received, sending the power control switch signal to the vehicle body control module, then the vehicle body control module forcibly disconnects the power switch control loop K and the electromagnetic power switch K2, and the vehicle controlled electric circuit is disconnected to realize an emergency power-off function.

[0008] The application also provides a vehicle intelligent control method based on an electromagnetic power switch, which comprises the following steps: step 1, inserting an ignition key, the body control module receives the key insertion signal, the power switch control loop K is closed, the electromagnetic power switch K2 is closed, and the whole vehicle controlled circuit is turned on; step 2, triggering the reset type power control switch K3, sending a power control switch signal to the body control module, if the vehicle is in a driving state, the body control module does not respond to the signal, the power switch control loop K is kept closed, the electromagnetic power switch K2 is kept closed, and the whole vehicle controlled circuit is kept on, thereby playing a function of preventing misoperation; step 3, when the vehicle is in a non-powered state and the ignition key is not operated for a preset time T, the body control module controls the power switch control loop K to be disconnected, the electromagnetic power switch K2 is disconnected, and the whole vehicle controlled circuit is disconnected, thereby entering an energy-saving state; and step 4, when the engine is turned off and the vehicle door is locked, the body control module controls the power switch control loop K to be disconnected, the electromagnetic power switch K2 is disconnected, and the whole vehicle controlled circuit is disconnected.

[0009] Further, the step 2 further comprises the following: if the reset type power control switch K3 is triggered when the vehicle is in a stationary state, the body control module forcibly disconnects the power switch control loop K and the electromagnetic power switch K2, and the whole vehicle controlled circuit is disconnected.

[0010] Further, the step 1 further comprises the following: the reset type power control switch K3 is triggered, a power control switch signal is sent to the body control module, the body control module controls the power switch control loop K to be connected, the electromagnetic power switch K2 is closed, and the whole vehicle controlled circuit is connected.

[0011] Further, the step 4 further comprises the following: when the engine is turned off and the reset type power control switch K3 is triggered, the body control module receives the power control switch signal, controls the power switch control loop K and the electromagnetic power switch K2 to be disconnected, and the whole vehicle controlled circuit is disconnected.

[0012] The application provides a vehicle intelligent control system and method based on an electromagnetic power switch, which realizes intelligent control of the electromagnetic power switch of the vehicle by integrating the functions of the body control module (BCM), can effectively avoid the safety hazards of power failure caused by misoperation of personnel or control loop failure during driving, and can also avoid the vehicle power supply risk caused by personnel leaving the vehicle and forgetting to operate. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The application provides a vehicle intelligent control method based on an electromagnetic power switch, which realizes intelligent control of the electromagnetic power switch of the vehicle by integrating the functions of the body control module (BCM), can effectively avoid the safety hazards of power failure caused by misoperation of personnel or control loop failure during driving, and can also avoid the vehicle power supply risk caused by personnel leaving the vehicle and forgetting to operate.

[0014] Figure 2It is a kind of electromagnetic power supply master switch control circuit connection diagram provided by prior art;

[0015] Figure 3 It is a kind of vehicle intelligent control circuit connection diagram based on electromagnetic power supply master switch provided by the application. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0017] Device item embodiment:

[0018] The present application provides a kind of vehicle intelligent control system based on electromagnetic power supply master switch, such as Figure 3 As shown in the system includes vehicle body control module, power switch control circuit, electromagnetic power supply master switch.

[0019] The vehicle body control module is used for collecting vehicle signals, when the vehicle is inserted with the ignition key, and receives the ignition key insertion signal, the vehicle body control module controls the power supply main switch control loop K to be closed, controls the electromagnetic power supply main switch K2 to be closed, so that the whole vehicle controlled electric circuit is connected, and the automatic power-on function is realized, when the vehicle is running, and receives the power supply control switch trigger signal, the vehicle body control module does not respond to the signal, and continues to keep the power supply main switch control loop K closed, the electromagnetic power supply main switch K2 is closed, and the whole vehicle controlled electric circuit is kept connected, and the misoperation protection function is realized, when the vehicle is not powered on, and after a preset time T, no ignition key signal is received, the vehicle body control module controls the power supply main switch control loop K to be disconnected, the electromagnetic power supply main switch K2 is disconnected, and the whole vehicle controlled electric circuit is disconnected, so as to enter the power saving state, and the intelligent power saving function is realized, when the engine closing signal and the vehicle door locking signal are received, the vehicle body control module controls the power supply main switch control loop K to be disconnected, the electromagnetic power supply main switch K2 is disconnected, and the whole vehicle controlled electric circuit is disconnected, and the automatic power-off function is realized; the vehicle signals include: ignition key signals, power supply control switch trigger signals, engine closing signals, vehicle door locking signals and the like. Compared with the single power supply control switch signal in the prior art, the intelligent control of the automobile power supply main switch is realized by the BCM integrated control, the other signals of the vehicle are fully collected and utilized: KNOB state, vehicle door state, KEY-IN (or one-key starting switch), ACC, IGN, engine speed (or new energy vehicle model Ready) and vehicle speed signals, the real intention of the driver can be accurately recognized, and then the intelligent control is realized.

[0020] The power supply switch control loop is connected with the vehicle body control module, and is used for controlling the closure / disconnection of the power supply switch control loop through the vehicle body control module, cooperating with the closure / disconnection of the electromagnetic power supply main switch, so as to realize the connection / disconnection of the whole vehicle controlled electric circuit.

[0021] The electromagnetic power supply main switch refers to an electromagnetic control structure, and its principle is that the electromagnetic attraction generated after the switch internal power supply main switch control is powered on is used to make the movable contact attract or release, so as to form the closure or disconnection of the switch contact point, thereby controlling the target power supply. The electromagnetic power supply main switch is connected with the power supply switch control loop, and is used for controlling the closure / disconnection of the electromagnetic power supply main switch through the vehicle body control module, cooperating with the closure / disconnection of the power supply switch control loop, so as to realize the connection / disconnection of the whole vehicle controlled electric circuit.

[0022] The application provides a vehicle intelligent control system and method based on an electromagnetic power switch, which realizes intelligent control of the electromagnetic power switch of the vehicle through function integration of a body control module (BCM), effectively avoids the risk of power failure during driving caused by personnel misoperation or control loop failure, and avoids the risk of vehicle power supply caused by personnel leaving the vehicle and forgetting to operate.

[0023] Method embodiment:

[0024] The application provides a vehicle intelligent control method based on an electromagnetic power switch, as shown in the figure, the method steps are as follows. Figure 1

[0025] Step 1, insert the ignition key, the body control module receives the key insertion signal, controls the power switch control loop K to be closed, controls the electromagnetic power switch K2 to be closed, and makes the whole vehicle controlled circuit be connected;

[0026] The driver enters the vehicle, inserts the ignition key, the BCM receives the KEY-IN signal B, the BCM controls the power switch control loop K to be closed, the electromagnetic power switch K2 is closed, and the whole vehicle controlled circuit is connected. As can be seen, after the driver inserts the key, the vehicle will automatically start the power supply without manual intervention. In addition to automatic power-on, manual power-on can also be performed, and the specific steps are as follows: the driver enters the vehicle, operates the power control switch K3, the BCM receives the trigger signal A, the BCM controls the power switch control loop K to be connected, the electromagnetic power switch K2 is closed, and the whole vehicle controlled circuit is connected. That is, manually triggering the power control switch K3 sends a power control switch signal to the body control module, the body control module controls the power switch control loop K to be closed, controls the electromagnetic power switch K2 to be closed, and the whole vehicle controlled circuit is connected. Therefore, the technical scheme provided by the application can simultaneously consider automatic power-on and manual power-on.

[0027] Step 2, trigger the reset type power control switch K3, send a power control switch signal to the body control module, if the vehicle is in a driving state, the body control module does not respond to the signal, continues to keep the power switch control loop K closed, the electromagnetic power switch K2 is closed, and the whole vehicle controlled circuit is kept connected to play the function of misoperation protection.

[0028] ​From the foregoing, the vehicle body control module will collect vehicle signals, including vehicle speed signal, so as to determine whether the vehicle is in running state or stationary state, if it is running state, the vehicle body control module will not send the signal to the power control switch, but if it is stationary state, the step 2 further comprises: if the reset type power control switch K3 is triggered in the vehicle stationary state, the power control switch signal is sent to the vehicle body control module, the vehicle body control module forcibly disconnects the power supply total switch control loop K and the electromagnetic power supply total switch K2, and the whole vehicle controlled electric circuit is disconnected.

[0029] Step 3, after the preset time T in the vehicle unpowered state, the ignition key is not operated, the vehicle body control module controls the power supply total switch control loop K to be disconnected, the electromagnetic power supply total switch K2 is disconnected, and the whole vehicle controlled electric circuit is disconnected, so as to enter the power saving state.

[0030] Step 4, when the engine is closed and the door is locked, the vehicle body control module controls the power supply total switch control loop K to be disconnected, the electromagnetic power supply total switch K2 is disconnected, and the whole vehicle controlled electric circuit is disconnected.

[0031] Similar to the case of turning on the power, the technical scheme provided by the application can simultaneously consider the power self-closing and the power manual closing. Therefore, the step 4 further comprises: when the engine is closed and the power control switch K3 is triggered, the vehicle body control module receives the power control switch signal, controls the power supply total switch control loop K and the electromagnetic power supply total switch K2 to be disconnected, and the whole vehicle controlled electric circuit is disconnected. That is, when the driver closes the engine (the engine speed signal G is invalid) and then operates the power control switch K3 in the cab, the vehicle body control module will respond to disconnect the controlled circuit and complete the manual power-off.

[0032] From the foregoing, the technical scheme provided by the application generally uses the method of binary signal matrix table (as shown in Table 1) to represent the signal state and check the compliance of the corresponding output. The same binary signal cannot correspond to different outputs.

[0033] Table 1 binary signal matrix table

[0034] The embodiment of the application provides a vehicle intelligent control method based on an electromagnetic power supply total switch, which realizes intelligent control of the electromagnetic power supply total switch of the automobile by function integration of the vehicle body control module (BCM), can effectively eliminate the driving power-off safety hazard caused by personnel misoperation or control circuit fault in the driving process, and avoids the vehicle power supply risk caused by personnel leaving the vehicle and forgetting to operate.

[0035] In summary, the vehicle intelligent control system and method based on the electromagnetic power switch, the system includes an electromagnetic power switch, reset power control switch and BCM. The method through the BCM on the vehicle signal acquisition and comprehensive judgment, accurate identification of the driver's intention, so as to realize the intelligent control of the electromagnetic power switch, can be in the premise of not additional parts, through the switch signal mode change and BCM control function integration, to achieve the intelligent control of the electromagnetic power switch, effectively solve the vehicle safety hidden trouble and the risk of power supply caused by vehicle failure, human error and omission operation.

[0036] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A vehicle intelligent control system based on an electromagnetic power main switch, characterized in that: The system comprises: The body control module is used to collect vehicle signals. When the vehicle is inserted with the ignition key and receives the ignition key insertion signal, the body control module controls the power supply main switch control circuit K to be closed, and controls the electromagnetic power supply main switch K2 to be closed, so that the vehicle controlled circuit is connected and the power automatic start function is realized. When the vehicle is running and receives the power control switch trigger signal, the body control module does not respond to the signal, and continues to keep the power supply main switch control circuit K closed, the electromagnetic power supply main switch K2 closed, and the vehicle controlled circuit remains connected to realize the function of misoperation protection. When the vehicle is not powered on and no ignition key signal is received after the preset time T, the body control module The control circuit K of the main power switch is disconnected, the electromagnetic main power switch K2 is disconnected, and the controlled electrical circuit of the entire vehicle is disconnected to enter the power-saving state and realize the intelligent power-saving function. When the engine shutdown and door lock signals are received, the body control module controls the main power switch control circuit K to disconnect, the electromagnetic main power switch K2 is disconnected, and the controlled electrical circuit of the entire vehicle is disconnected to realize the automatic power-off function. When the vehicle is stationary and receives the power control switch trigger signal, it sends the power control switch signal to the body control module, and the body control module forcibly disconnects the main power switch control circuit K and the electromagnetic main power switch K2, and the controlled electrical circuit of the entire vehicle is disconnected to realize the emergency power-off function. The power switch control circuit is connected to the body control module and is used to control its closing / opening through the body control module, coordinating with the closing / opening of the electromagnetic power main switch to realize the connection / disconnection of the controlled electrical circuit of the entire vehicle; The electromagnetic main power switch is connected to the power switch control circuit and is used to control its closing / opening through the body control module, cooperating with the closing / opening of the power switch control circuit to realize the connection / disconnection of the controlled electrical circuit of the entire vehicle.

2. The vehicle intelligent control system based on the electromagnetic power main switch according to claim 1, characterized in that: The vehicle signals include: an ignition key signal, a trigger signal of a power control switch, a signal of an engine shutdown, and a signal of a door lock.

3. The vehicle intelligent control system based on the electromagnetic power main switch according to claim 2, characterized in that: The ignition key signal includes an ignition key insertion signal, a vehicle power supply signal, and an ignition switch control power supply.

4. A method for implementing the vehicle intelligent control system based on the electromagnetic main power switch according to any one of claims 1 to 3, characterized in that: The method comprises: Step 1: Insert the ignition key. The body control module receives the key insertion signal, controls the power supply main switch control loop K to close, and controls the electromagnetic power supply main switch K2 to close, so that the vehicle controlled circuit is turned on. Step 2: Trigger the reset power control switch K3 and send a power control switch signal to the body control module. If the vehicle is in motion, the body control module does not respond to the signal and continues to keep the main power switch control circuit K closed. The electromagnetic main power switch K2 is closed, and the vehicle's controlled electrical circuit remains connected to protect against misoperation. Step 3: After a preset time T has passed with the ignition key in the vehicle's unpowered state and no operation is performed on the ignition key, the body control module controls the main power switch control circuit K to be disconnected, the electromagnetic power main switch K2 is disconnected, and the entire vehicle's controlled electrical circuit is disconnected to enter a power-saving state; Step 4: When the engine is turned off and the doors are locked, the body control module controls the power main switch control circuit K to be disconnected, the electromagnetic power main switch K2 is disconnected, and the vehicle's controlled electrical circuit is disconnected.

5. The vehicle intelligent control method based on the electromagnetic main power switch according to claim 4, characterized in that: The step 2 further comprises: If the vehicle is stationary, the reset power control switch K3 is triggered and the power control switch signal is sent to the body control module. The body control module then forcibly disconnects the main power switch control circuit K and the electromagnetic main power switch K2, and the entire vehicle's controlled electrical circuit is disconnected.

6. The vehicle intelligent control method based on the electromagnetic power main switch according to claim 4, characterized in that: The step 1 further comprises: The reset power control switch K3 is triggered, and the power control switch signal is sent to the body control module. The body control module controls the main power switch control circuit K to be connected, the electromagnetic main power switch K2 is closed, and the controlled electrical circuit of the entire vehicle is connected.

7. The vehicle intelligent control method based on the electromagnetic power main switch according to claim 4, characterized in that: The step 4 further comprises: When the engine is turned off and the power control switch K3 is triggered, the body control module receives the power control switch signal, controls the power main switch control circuit K and the electromagnetic power main switch K2 to be disconnected, and the vehicle's controlled electrical circuit is disconnected.

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