Vehicle intelligent control system and method based on electromagnetic power main switch

Abstract

The invention provides a vehicle intelligent control method based on an electromagnetic power supply main switch, which comprises the following steps that: step 1, a vehicle body control module receives a key insertion signal, controls a power supply main switch control loop K to be closed, and controls an electromagnetic power supply main switch K2 to be closed, so that a whole vehicle controlled circuit is switched on; 2, a reset type power supply control switch K3 is triggered, a power supply control switch signal is sent to a vehicle body control module, the vehicle body control module does not respond to the signal, the power supply main switch control loop K continues to be closed, the electromagnetic power supply main switch K2 continues to be closed, and the whole vehicle controlled electric loop keeps being connected; 3, the vehicle body control module controls the power supply main switch control loop K to be switched off, the electromagnetic power supply main switch K2 to be switched off, and the whole vehicle controlled electric loop to be switched off; and 4, the vehicle body control module controls the power supply main switch control loop K to be disconnected, the electromagnetic power supply main switch K2 to be disconnected, and the whole vehicle controlled electric loop 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 power main 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" stipulates that cars and trailers transporting explosives and highly toxic chemicals on the road should have a control device for opening and closing the main power switch in the cab; GB21668 "Structural Requirements for Dangerous Goods Transport Vehicles" stipulates that Class N and Class O vehicles transporting dangerous goods and trains consisting of Class N vehicles and one Class O vehicle should have a control device for opening and closing the main power switch in the cab), electromagnetic main power switches will be used in 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. After entering the vehicle, the driver manually operates the self-locking power control switch K1, the electromagnetic power main switch control circuit is connected, and the switch power main switch control is powered on, so that the moving contact is attracted to form the switch contact K2 connected, thereby controlling the vehicle power circuit to be connected. Before leaving the vehicle, the driver manually operates the self-locking power control switch K1, the electromagnetic power main switch control circuit is disconnected, and the switch power main switch control is powered off, so that the moving contact is released to form the switch contact K2 disconnected, thereby controlling the vehicle power circuit to be disconnected. When the electromagnetic power main switch control circuit is connected, the working current of the power main switch control circuit is large. Under normal vehicle use conditions, after the vehicle is started, the generator (or new energy vehicle DC / DC) intervenes in the work, and the working current will not cause any impact; if the vehicle is parked, after the vehicle is turned off, the generator (or new energy vehicle DC / DC) stops working and only relies on the battery power supply. When the working current works for a long time, it will cause the battery power consumption to feed power, thereby affecting the normal start of the vehicle. Secondly, when people leave the vehicle, the electromagnetic power main switch is forgotten to be disconnected, and the circuit of the controlled power part of the vehicle is energized, which poses certain safety hazards and violates the original intention of the regulations. Even in extreme working conditions, such as when the driver misoperates or the vehicle fails during driving, the control circuit of the power control switch is disconnected, which will cause the vehicle to lose power and stall while driving, which is very likely to cause a driving accident and poses a major safety hazard. Summary of the invention

[0003] In view of this, the present invention provides a vehicle intelligent control system and method based on an electromagnetic power main switch to solve technical problems in the prior art such as power consumption and power supply of the battery under shutdown conditions, forgetting to disconnect the electromagnetic power main switch when people leave the vehicle, and traffic accidents caused by driver misoperation or vehicle failure.

[0004] The present invention provides a vehicle intelligent control system based on an electromagnetic power main switch, the system comprising: a body control module, which is used to collect vehicle signals; when the vehicle inserts an ignition key and receives an ignition key insertion signal, the body control module controls the power main switch control loop K to be closed, controls the electromagnetic power main switch K2 to be closed, so that the whole vehicle controlled circuit is connected, and realizes the automatic power on function; when the vehicle is running and receives a power control switch trigger signal, the body control module does not respond to the signal, continues to keep the power main switch control loop K closed, the electromagnetic power main switch K2 is closed, and the whole vehicle controlled circuit is kept connected, realizing the function of misoperation protection; when the vehicle is not powered on, after a preset time T, no ignition key signal is received, the body control module controls the power main switch control loop K to be closed, the electromagnetic power main switch K2 is closed, and the whole vehicle controlled circuit is kept connected, realizing the function of misoperation protection; Loop K is disconnected, the electromagnetic power main switch K2 is disconnected, and the controlled electrical circuit of the whole vehicle is disconnected to enter the power saving state to realize the intelligent power saving function. When the engine shutdown and door lock signals are received, the body control module controls the power main switch to control loop K to disconnect, the electromagnetic power main switch K2 is disconnected, and the controlled electrical circuit of the whole vehicle is disconnected to realize the automatic power shutdown function; the power switch control circuit is connected to the body control module, and is used to control its closing / disconnection through the body control module, and cooperate with the closing / disconnection of the electromagnetic power main switch to realize the connection / disconnection of the controlled electrical circuit of the whole vehicle; the electromagnetic power main switch is connected to the power switch control circuit, and is used to control its closing / disconnection through the body control module, and cooperate with the closing / disconnection of the power switch control circuit to realize the connection / disconnection of the controlled electrical circuit of the whole vehicle.

[0005] Furthermore, the vehicle signal includes: an ignition key signal, a trigger signal of a power control switch, an engine shutdown signal, and a door lock signal.

[0006] Furthermore, the ignition key signal includes an ignition key insertion signal, a vehicle power signal, and an ignition switch control power supply.

[0007] Furthermore, the body control module is also used to: when the vehicle is stationary and receives a power control switch trigger signal, send a power control switch signal to the body control module, then 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 achieve an emergency power-off function.

[0008] The present invention also provides a vehicle intelligent control method based on an electromagnetic power main switch, the method comprising: step 1, inserting an ignition key, the body control module receives a key insertion signal, controls the power main switch control loop K to be closed, controls the electromagnetic power main switch K2 to be closed, so that the controlled circuit of the whole vehicle is connected; step 2, triggering the reset 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, continues to keep the power main switch control loop K closed, the electromagnetic power main switch K2 closed, and the controlled electrical circuit of the whole vehicle connected, so as to play a function of misoperation protection; step 3, after a preset time T in the vehicle is not powered on, the ignition key is not operated, the body control module controls the power main switch control loop K to be disconnected, the electromagnetic power main switch K2 to be disconnected, and the controlled electrical circuit of the whole vehicle to enter a power saving state; step 4, when the engine is turned off and the door is locked, the body control module controls the power main switch control loop K to be disconnected, the electromagnetic power main switch K2 to be disconnected, and the controlled electrical circuit of the whole vehicle to be disconnected.

[0009] Furthermore, step 2 also includes: 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, then 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.

[0010] Furthermore, step 1 also includes: triggering the power control switch K3, sending a power control switch signal to the body control module, the body control module controls the main power switch control circuit K to be turned on, the electromagnetic power main switch K2 is closed, and the controlled electrical circuit of the entire vehicle is turned on.

[0011] Furthermore, step 4 also includes: 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 loop K and the electromagnetic power main switch K2 to be disconnected, and the controlled electrical circuit of the entire vehicle is disconnected.

[0012] The present invention provides a vehicle intelligent control system and method based on an electromagnetic power main switch. The technical solution realizes intelligent control of the automobile electromagnetic power main switch by integrating the functions of a body control module (BCM), which can effectively avoid the hidden safety hazard of power failure during driving caused by human misoperation or control circuit failure, and at the same time avoid the risk of vehicle power supply caused by people forgetting to operate when leaving the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a flow chart of a vehicle intelligent control method based on an electromagnetic power main switch provided by the present invention; Figure 2It is a connection diagram of an electromagnetic power main switch control circuit provided by the prior art; Figure 3 The invention provides a vehicle intelligent control circuit connection diagram based on an electromagnetic power main switch. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Device Item Embodiment: The present invention provides a vehicle intelligent control system based on an electromagnetic power main switch, such as Figure 3 The system shown includes a body control module, a power switch control circuit, and an electromagnetic power main switch.

[0016] The body control module is used to collect vehicle signals. When the vehicle inserts the ignition key and receives the ignition key insertion signal, the body control module controls the power supply main switch control circuit K to close, and controls the electromagnetic power supply main switch K2 to close, so that the vehicle controlled circuit is connected to realize the automatic power on function. When the vehicle is driving and receives the power supply 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, after a preset time T, when no ignition key signal is received, the body control module controls the power supply main switch control circuit K to be disconnected, the electromagnetic power supply main switch K2 to be disconnected, and the vehicle controlled electric circuit to be disconnected, so as 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 power supply main switch control circuit K to be disconnected, the electromagnetic power supply main switch K2 to be disconnected, and the vehicle controlled electric circuit to be disconnected, so as to realize the automatic power off function; the vehicle signal includes: ignition key signal, trigger signal of power control switch, engine shutdown signal, door lock signal, etc. The ignition key signal includes ignition key insertion signal (KEY-IN signal B), vehicle power supply signal (ACC input signal), ignition switch control power supply (IGN input signal). Compared with the single power control switch signal of the prior art, the present application realizes intelligent control of the main power switch of the vehicle through integrated control of BCM, and fully collects and utilizes other vehicle signals: KNOB status, door status, KEY-IN (or one-button start switch), ACC, IGN, engine speed (or new energy vehicle model Ready) and vehicle speed, etc., which can accurately identify the driver's true intention and realize intelligent control.

[0017] 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, and cooperate with the closing / opening of the electromagnetic power main switch to realize the connection / disconnection of the controlled electric circuit of the whole vehicle; The electromagnetic power main switch refers to an electromagnetic control structure. Its principle is to control the electromagnetic attraction generated by the internal power main switch after power is turned on, so that the moving contact is attracted or released to form the switch contact closure or disconnection, thereby controlling the target power supply. The electromagnetic power main switch is connected to the power switch control circuit, and is used to control its closing / disconnection through the body control module, and cooperate with the closing / disconnection of the power switch control circuit to realize the connection / disconnection of the controlled electrical circuit of the whole vehicle.

[0018] The present invention provides a vehicle intelligent control system and method based on an electromagnetic power main switch. The technical solution realizes intelligent control of the automobile electromagnetic power main switch by integrating the functions of a body control module (BCM), which can effectively avoid the hidden safety hazard of power failure during driving caused by human misoperation or control circuit failure, and at the same time avoid the risk of vehicle power supply caused by people forgetting to operate when leaving the vehicle.

[0019] Method Item Embodiment: The present invention provides a vehicle intelligent control method based on an electromagnetic power main switch, such as Figure 1 As shown, the method steps are as follows.

[0020] 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, controls the electromagnetic power supply main switch K2 to close, so that the vehicle controlled circuit is turned on; The driver enters the vehicle and inserts the ignition key. The BCM receives the KEY-IN signal B, and the BCM autonomously controls the power supply main switch control circuit K to close, the electromagnetic power supply main switch K2 to close, and the controlled electrical circuit of the whole vehicle is connected. It can be seen from this that after the driver inserts the key, the vehicle will automatically turn on the power without manual intervention. However, in addition to automatic power on, manual power on can also be performed. The specific steps are: the driver enters the vehicle and operates the power supply control switch K3. The BCM receives the trigger signal A, the BCM controls the power supply main switch control circuit K to turn on, the electromagnetic power supply main switch K2 to close, and the controlled electrical circuit of the whole vehicle is connected. That is, the power supply control switch K3 is manually triggered, and the power supply control switch signal is sent to the body control module. The body control module controls the power supply main switch control circuit K to close, controls the electromagnetic power supply main switch K2 to close, and the controlled electrical circuit of the whole vehicle is connected. Therefore, the technical solution provided by the present application can take into account both autonomous power on and manual power on.

[0021] Step 2, trigger the reset power control switch K3, send the power control switch signal to the body control module, if the vehicle is in the driving state, the body control module does not respond to the signal, continues to keep the power main switch control loop K closed, the electromagnetic power main switch K2 closed, the vehicle controlled electrical circuit remains connected, so as to play the function of misoperation protection; It can be seen from the above content that the body control module will collect vehicle signals, including vehicle speed signals, to determine whether the vehicle is in a driving state or a stationary state. If it is in a driving state, the body control module will not respond to the signal sent by the power control switch, but if it is in a stationary state, then step 2 also includes: if the vehicle is in a stationary state, the reset power control switch K3 is triggered, and the power control switch signal is sent to the body control module, then 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.

[0022] Step 3: When the vehicle is not powered on, after a preset time T, the ignition key is not operated, the body control module controls the power supply main switch control circuit K to be disconnected, the electromagnetic power supply main switch K2 is disconnected, and the vehicle controlled power circuit is disconnected to enter the power saving state; Step 4, when the engine is turned off and the door is 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 controlled electrical circuit is disconnected.

[0023] Similar to the situation of turning on the power, the technical solution provided by the present application can take into account both the autonomous power shutdown and the manual power shutdown. Therefore, step 4 also includes: 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 controlled electrical circuit of the whole vehicle is disconnected. That is, after the driver turns off the engine (the engine speed signal G is invalid), when he operates the power control switch K3 in the cab, the body control module will respond, disconnect the controlled circuit, and complete the manual power shutdown.

[0024] As can be seen from the above, the technical solution provided by the present invention usually uses a 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.

[0025] Table 1 Binary signal matrix table The embodiment of the present invention provides a vehicle intelligent control method based on an electromagnetic power main switch, which realizes intelligent control of the automobile electromagnetic power main switch by integrating the functions of a body control module (BCM), and can effectively prevent the hidden safety hazard of power failure during driving caused by human misoperation or control circuit failure, and at the same time avoid the risk of vehicle power supply caused by people leaving the vehicle and forgetting to operate.

[0026] In summary, a vehicle intelligent control system and method based on an electromagnetic power main switch is provided, wherein the system includes an electromagnetic power main switch, a reset power control switch and a BCM. The method collects and comprehensively judges vehicle signals through the BCM, accurately identifies the driver's intention, and thus realizes intelligent control of the electromagnetic power main switch. Without adding additional parts, the intelligent control of the electromagnetic power main switch can be achieved by changing the switch signal mode and integrating the BCM control function, effectively solving the vehicle safety hazards and power supply risks caused by vehicle failures, human misoperation and missed operations.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

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 inserts 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 to realize the automatic power on function. When the vehicle is driving and receives the power supply 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 electric circuit connected to realize the function of misoperation protection. When the vehicle is not powered on, after a preset time T, no ignition key signal is received, the body control module controls the power supply main switch control circuit K to be disconnected, the electromagnetic power supply main switch K2 to be disconnected, and the vehicle controlled electric circuit to be disconnected to enter the power saving state to realize the intelligent power saving function. When the engine shutdown and door lock signals are received, the body control module controls the power supply main switch control circuit K to be disconnected, the electromagnetic power supply main switch K2 to be disconnected, and the vehicle controlled electric circuit to be disconnected to realize the automatic 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, and cooperate with the closing / opening of the electromagnetic power main switch to realize the connection / disconnection of the controlled electric circuit of the whole vehicle; The electromagnetic power main switch is connected to the power switch control circuit and is used to control its closing / opening through the body control module, and cooperates with the closing / opening of the power switch control circuit to realize the connection / disconnection of the controlled electrical circuit of the whole vehicle.

2. According to claim 1, a vehicle intelligent control system based on an electromagnetic power main switch is characterized in that: The vehicle signal includes: 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. According to claim 2, a vehicle intelligent control system based on an electromagnetic power main switch is characterized in that: The ignition key signal includes an ignition key insertion signal, a vehicle power signal, and an ignition switch control power supply.

4. According to claim 1, a vehicle intelligent control system based on an electromagnetic power main switch is characterized in that: The body control module is also used to: When the vehicle is stationary and receives a power control switch trigger signal, it sends a 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 achieve the emergency power-off function.

5. A method for implementing the vehicle intelligent control system based on the electromagnetic power main switch according to claims 1-4, 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, 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, send the power control switch signal to the body control module, if the vehicle is in the driving state, the body control module does not respond to the signal, continues to keep the power main switch control loop K closed, the electromagnetic power main switch K2 closed, the vehicle controlled electrical circuit remains connected, so as to play the function of misoperation protection; Step 3: When the vehicle is not powered on, after a preset time T, the ignition key is not operated, the body control module controls the power supply main switch control circuit K to be disconnected, the electromagnetic power supply main switch K2 is disconnected, and the vehicle controlled power circuit is disconnected to enter the 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 controlled electrical circuit is disconnected.

6. The vehicle intelligent control method based on the electromagnetic power main switch according to claim 5 is characterized in that: The step 2 also includes: 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, then 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.

7. The vehicle intelligent control method based on electromagnetic power main switch according to claim 5 is characterized in that: The step 1 also includes: The 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 turned on, the electromagnetic power main switch K2 is closed, and the controlled electrical circuit of the whole vehicle is turned on.

8. The vehicle intelligent control method based on electromagnetic power main switch according to claim 5 is characterized in that: The step 4 also includes: 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 loop K and the electromagnetic power main switch K2 to be disconnected, and the vehicle controlled electrical circuit is disconnected.

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