Power-on self-locking circuit, power-on and power-off method and vehicle

Abstract

The invention discloses a power-on self-locking circuit, a power-on and power-off method and a vehicle, the power-on self-locking circuit comprises a signal detection unit, a control unit and a self-locking unit, and the signal detection unit detects a power-on control signal and outputs a power-on detection signal. The control unit processes the power-on detection signal and generates and outputs a power-on driving signal. And the self-locking unit controls the relay to be switched into a conducting state according to the power-on driving signal and controls the locking switch to be closed after the relay is in the conducting state, so that the power-on self-locking function of the circuit is realized, similarly, the power-on self-locking circuit can also realize power-off operation, and the stability and continuity of the circuit after power-on are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power-on control, and in particular to a power-on self-locking circuit, a power-on and power-off method, and a vehicle. Background Art

[0002] With the advancement of science and technology, vehicle controllers are increasingly used in motorcycles and electric vehicles. Existing vehicle controllers usually have automatic power on and off functions. However, when the vehicle controllers that automatically power on are unstable, they may freeze or restart, which may cause the engine of the vehicle to stall due to instant power failure, which may affect the personal safety of users while driving. Summary of the invention

[0003] Based on this, it is necessary to provide a power-on self-locking circuit, a power-on and power-off method, and a vehicle to solve the problem that the automatically powered-on vehicle controller may freeze, restart, etc. when its own operation is unstable.

[0004] A power-on self-locking circuit, the power-on self-locking circuit comprising:

[0005] A signal detection unit, used to respond to the detected power-on control signal and output a power-on detection signal;

[0006] A control unit, connected to the signal detection unit, configured to respond to the power-on detection signal and output a power-on drive signal;

[0007] A self-locking unit, the self-locking unit comprising a first diode, a second diode, a relay, a locking switch, an on-board controller and a battery;

[0008] The anode of the first diode is connected to the control unit, and the cathode of the first diode is connected to the first end of the relay;

[0009] The anode of the second diode is connected to the first end of the vehicle-mounted controller, the cathode of the second diode is connected to the first end of the relay, and the second end of the vehicle-mounted controller is grounded;

[0010] The second end of the relay is connected to the first end of the vehicle controller through the locking switch, and the third end of the relay is grounded through the battery. The relay is used to respond to the power-on drive signal and switch to the on state, and the locking switch remains closed after the relay is in the on state.

[0011] In one embodiment, the self-locking unit includes: a first MOS tube, a second MOS tube, a first resistor, a second resistor, a first diode, a second diode, a relay, a locking switch, a vehicle controller and a battery;

[0012] The gate of the first MOS tube is connected to the control unit, the source of the first MOS tube is grounded, and the drain of the first MOS tube is connected to the gate of the second MOS tube;

[0013] The source of the second MOS tube is connected to the battery, the drain of the second MOS tube is connected to the positive electrode of the first diode, and the second resistor is connected in parallel between the gate and the source of the second MOS tube;

[0014] The cathode of the first diode is connected to the first end of the relay, and the relay is powered on after the power-on drive signal is input;

[0015] The anode of the second diode is connected to the first end of the vehicle-mounted controller, the cathode of the second diode is connected to the first end of the relay, and the second end of the vehicle-mounted controller is grounded;

[0016] The second end of the relay is connected to the first end of the vehicle controller through the locking switch, the third end of the relay is grounded through the battery, and the locking switch remains closed after the relay is powered on.

[0017] In one embodiment, the signal detection unit includes a faucet lock signal detection module, and the faucet lock signal detection module includes a third MOS tube, a third resistor, a fourth resistor and a third diode;

[0018] The cathode of the third diode inputs the faucet lock power-on control signal, the anode of the third diode is connected to the source of the third MOS tube, and the third resistor is connected in parallel between the gate and the source of the third MOS tube;

[0019] The source of the third MOS tube is connected to the power supply, the drain of the third MOS tube is grounded through the fourth resistor, and the third MOS tube responds to the faucet lock power-on control signal and outputs a first power-on detection signal from the drain.

[0020] In one embodiment, the signal detection unit includes a button signal detection module, and the button signal detection module includes a fourth MOS tube, a fifth resistor, a sixth resistor and a fourth diode;

[0021] The cathode of the fourth diode inputs a power-on button control signal, the anode of the fourth diode is connected to the source of the fourth MOS tube, and the fifth resistor is connected in parallel between the gate and the source of the fourth MOS tube;

[0022] The source of the fourth MOS tube is connected to the power supply, the drain of the fourth MOS tube is grounded through the sixth resistor, and the fourth MOS tube responds to the power-on button control signal and outputs a second power-on detection signal from the drain.

[0023] A power-on self-locking method is applied to the above power-on self-locking circuit, the method comprising:

[0024] When the signal detection unit detects a power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal;

[0025] When the control unit receives the power-on detection signal, it responds to the power-on detection signal and outputs a power-on driving signal;

[0026] When the relay of the self-locking unit receives the power-on detection signal, it responds to the power-on drive signal and switches to a conducting state;

[0027] After the relay is in the conducting state, the locking switch remains closed, so that the battery is powered on and self-locked for the onboard controller via the relay and the locking switch.

[0028] In one embodiment, the signal detection unit includes a faucet lock signal detection module and a button signal detection module. When the signal detection unit detects a power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal, including:

[0029] When the faucet lock signal detection module detects the faucet lock power-on control signal, it responds to the faucet lock power-on control signal and outputs a first power-on detection signal;

[0030] When the button signal detection module detects a power-on button control signal, it responds to the power-on button control signal and outputs a second power-on detection signal;

[0031] When the control unit inputs the power-on detection signal, responding to the power-on detection signal and outputting a power-on driving signal includes:

[0032] When the control unit inputs the first power-on detection signal and the second power-on detection signal, it responds to the first power-on detection signal and the second power-on detection signal and outputs a power-on driving signal.

[0033] A power-off method is applied to the above-mentioned power-on self-locking circuit, the method comprising:

[0034] When the signal detection unit detects a power-off control signal, it responds to the power-off control signal and outputs a power-off detection signal;

[0035] When the control unit receives the power-off detection signal, it responds to the power-off detection signal and outputs a power-off driving signal;

[0036] When the relay of the self-locking unit receives the power-off detection signal, it responds to the power-off drive signal and switches to the disconnected state;

[0037] After the relay is in the disconnected state, the locking switch is turned off to power off the power-on self-locking circuit.

[0038] In one embodiment, the signal detection unit includes a faucet lock signal detection module and a button signal detection module, and when the signal detection unit detects a power-off control signal, responding to the power-off control signal and outputting a power-off detection signal includes:

[0039] When the faucet lock signal detection module detects the faucet lock power-off control signal, it responds to the faucet lock power-off control signal and outputs a first power-off detection signal;

[0040] When the button signal detection module detects a power-off button control signal, it responds to the power-off button control signal and outputs a second power-off detection signal;

[0041] When the control unit receives the power-off detection signal, responding to the power-off detection signal and outputting a power-off driving signal includes:

[0042] When the control unit receives the first power-off detection signal and the second power-off detection signal, it responds to the first power-off detection signal and the second power-off detection signal and outputs a power-off driving signal.

[0043] A vehicle comprises the above-mentioned power-on self-locking circuit.

[0044] The present invention provides a power-on self-locking circuit, a power-on and power-off method, and a vehicle. The power-on self-locking circuit includes a signal detection unit, a control unit, and a self-locking unit, wherein the signal detection unit detects a power-on control signal and outputs a power-on detection signal. The control unit processes the power-on detection signal, generates and outputs a power-on drive signal. The self-locking unit controls the relay to switch to a conducting state according to the power-on drive signal, and controls the locking switch to remain closed after the relay is in the conducting state, thereby realizing the power-on self-locking function of the circuit. Similarly, the power-on self-locking circuit can also realize the power-off operation, which ensures the stability and continuity of the circuit after power-on. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] in:

[0047] Figure 1is a circuit diagram of a power-on self-locking circuit in one embodiment;

[0048] Figure 2 is a circuit diagram of a self-locking unit in one embodiment;

[0049] Figure 3 is a circuit diagram of a faucet lock signal detection module in one embodiment;

[0050] Figure 4 is a circuit diagram of a button signal detection module in one embodiment;

[0051] Figure 5 A schematic diagram of a power-on self-locking method in an embodiment;

[0052] Figure 6 FIG. 4 is a flow chart of a power-off method in an embodiment. DETAILED DESCRIPTION

[0053] 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.

[0054] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0055] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0056] like Figure 1 As shown, Figure 1 : is a circuit diagram of a power-on self-locking circuit in an embodiment. The power-on self-locking circuit in this embodiment includes:

[0057] The signal detection unit 100 is used to respond to the detected power-on control signal and output a power-on detection signal.

[0058] The control unit 200 is connected to the signal detection unit 100 and is used to respond to the power-on detection signal and output a power-on driving signal.

[0059] The self-locking unit 300 includes a first diode D1, a second diode D2, a relay X1, a locking switch S1, an on-board controller ECU and a battery BAT.

[0060] An anode of the first diode D1 is connected to the control unit 200 , and a cathode of the first diode D1 is connected to a first end of the relay X1 .

[0061] An anode of the second diode D2 is connected to a first end of the vehicle-mounted controller ECU, a cathode of the second diode D2 is connected to a first end of the relay X1, and a second end of the vehicle-mounted controller ECU is grounded.

[0062] The second end of the relay X1 is connected to the first end of the vehicle controller ECU through the locking switch S1, and the third end of the relay X1 is grounded through the battery BAT. The relay X1 is used to respond to the power-on drive signal and switch to the on state. The locking switch S1 remains closed after the relay X1 is in the on state.

[0063] In the above-mentioned power-on self-locking circuit, when the circuit receives a power-on control signal, the signal detection unit 100 detects the signal and outputs a power-on detection signal. Then, after receiving the power-on detection signal, the control unit 200 outputs a power-on drive signal. The power-on drive signal is transmitted to the first end of the relay X1 through the first diode D1. When the first end of the relay X1 receives the power-on drive signal, the coil of the relay X1 is excited and the relay is in a conducting state. After the relay X1 is in a conducting state, the control lock switch S1 is kept closed to ensure that the relay X1 continues to be turned on. In this way, even if the power-on drive signal cannot be output due to abnormal operation of the control unit 200 during driving, since the lock switch S1 remains closed and the relay X1 remains turned on, the battery BAT can also continuously power on the vehicle controller ECU through the relay X1 and the lock switch S1, thereby realizing the power-on self-locking function of the circuit.

[0064] In a specific embodiment, Figure 2 As shown, the self-locking unit 300 includes: a first MOS tube Q1, a second MOS tube Q2, a first resistor R1, a second resistor R2, a first diode D1, a second diode D2, a relay X1, a locking switch S1, an on-board controller ECU and a battery BAT;

[0065] The gate of the first MOS transistor Q1 is connected to the control unit 200, the source of the first MOS transistor Q1 is grounded, and the drain of the first MOS transistor Q1 is connected to the gate of the second MOS transistor Q2;

[0066] The source of the second MOS tube Q2 is connected to the battery BAT, the drain of the second MOS tube Q2 is connected to the positive electrode of the first diode D1, and the second resistor R2 is connected in parallel between the gate and the source of the second MOS tube Q2;

[0067] The cathode of the first diode D1 is connected to the first end of the relay X1, and the relay X1 is energized after a power-on driving signal is input;

[0068] The anode of the second diode D2 is connected to the first end of the vehicle-mounted controller ECU, the cathode of the second diode D2 is connected to the first end of the relay X1, and the second end of the vehicle-mounted controller ECU is grounded;

[0069] The second end of the relay X1 is connected to the first end of the vehicle controller ECU through the locking switch S1, and the third end of the relay X1 is grounded through the battery BAT. The locking switch S1 remains closed after the relay X1 is powered on.

[0070] In this specific embodiment, when the control unit 200 outputs a power-on drive signal, the signal is transmitted to the gate of the first MOS tube Q1. The gate voltage of the first MOS tube Q1 increases, so that the first MOS tube Q1 is turned on, the source of the first MOS tube Q1 is grounded, and the drain of the first MOS tube is connected to the gate of the second MOS tube Q2 to form a low-resistance path. After the first MOS tube Q1 is turned on, the current flows into the gate of the second MOS tube Q2 through the drain of the first MOS tube Q1, and the source of the second MOS tube Q2 is connected to the battery BAT, and the second MOS tube Q2 is also turned on. The battery BAT provides voltage, and the current flows into the positive electrode of the first diode D1 through the drain of the second MOS tube Q2. The cathode current of the first diode D1 flows into the first end of the relay X1, so that the relay X1 is in the on state. After the relay X1 is in the on state, the control lock switch S1 is kept closed to ensure that the relay X1 continues to be turned on. In this way, even if the control unit 200 fails to output the power-on drive signal due to abnormal operation during driving, since the locking switch S1 remains closed and the relay X1 remains turned on, the battery BAT can continue to power the vehicle controller ECU through the relay X1 and the locking switch S1, thereby realizing the self-locking function of the circuit.

[0071] In a specific embodiment, Figure 3 As shown, the signal detection unit 100 includes a faucet lock signal detection module, and the faucet lock signal detection module includes a third MOS tube Q3, a third resistor R3, a fourth resistor R4 and a third diode D3;

[0072] The cathode of the third diode D3 inputs the faucet lock power-on control signal, the anode of the third diode D3 is connected to the source of the third MOS tube Q3, and the third resistor R3 is connected in parallel between the gate and the source of the third MOS tube Q3;

[0073] The source of the third MOS tube Q3 is connected to the power supply, the drain of the third MOS tube Q3 is grounded through the fourth resistor R4, and the third MOS tube Q3 responds to the faucet lock power-on control signal and outputs a first power-on detection signal from the drain.

[0074] In this specific embodiment, when the faucet lock is in the lifted state, the corresponding input faucet lock power-on control signal is in a suspended state. At this time, the third diode D3 is not conductive, the VGS of the third MOS tube Q3 is 0V, the third MOS tube Q3 is turned off, and the voltage at the point where the fourth resistor R4 is connected is pulled down to ground by R4, and a first power-on detection signal is output. The first power-on detection signal is a low-level signal, and the control unit 200 can determine that the faucet lock is in the lifted state based on this.

[0075] Correspondingly, when the faucet lock is in the dropped state, the corresponding input faucet lock power-off control signal is in the key-pull-down state. At this time, the third diode D3 is turned on, so that the gate voltage of the third MOS tube Q3 is higher, VGS is effective, the third MOS tube Q3 is turned on, and a low-resistance channel is formed between the drain and the source. The voltage at the point where the fourth resistor R4 is connected is close to the power supply voltage, and the first power-off detection signal is output. The first power-off detection signal is a high-level signal. Based on this, the control unit 200 can determine that the faucet lock is in the locked state.

[0076] This design ensures that the circuit can correctly detect and output corresponding detection signals under different faucet lock states.

[0077] In a specific embodiment, Figure 4 As shown, the signal detection unit 100 includes a button signal detection module, and the button signal detection module includes a fourth MOS tube Q4, a fifth resistor R5, a sixth resistor R6 and a fourth diode D4;

[0078] The cathode of the fourth diode D4 inputs the power-on button control signal, the anode of the fourth diode D4 is connected to the source of the fourth MOS tube Q4, and the fifth resistor R5 is connected in parallel between the gate and the source of the fourth MOS tube Q4;

[0079] The source of the fourth MOS transistor Q4 is connected to the power supply, the drain of the fourth MOS transistor Q4 is grounded through the sixth resistor R6, and the fourth MOS transistor Q4 responds to the power-on button control signal and outputs a second power-on detection signal from the drain.

[0080] In this specific embodiment, when the power-on button is pressed, the first end of the fourth diode D4 is connected to the ground, the VGS voltage of the fourth MOS tube Q4 is -VCC, the fourth MOS tube Q4 is turned on, a low-resistance channel is formed between the drain and the source, the drain voltage is close to the power supply voltage (high level), the control unit detects the high-level signal, determines that the user has arrived next to the motor vehicle, and then pulls up the relay to power on the vehicle. When the power-on button is pressed, the first end of the fourth diode D4 is connected to the ground, the VGS voltage of the fourth MOS tube Q4 is -VCC, the fourth MOS tube Q4 is in a conducting state, and the control unit 200 can detect that the output second power-on detection signal is a high-level signal, and at this time it is determined that the user has arrived next to the motor vehicle to unlock.

[0081] Correspondingly, when the power-on button is not pressed, there is no voltage at the first end of the fourth diode D4, and the fourth diode D4 is not conducting, the VGS of the fourth MOS tube Q4 is 0V, and the fourth MOS tube Q4 is in a closed state. A high-resistance channel is formed between the drain and the source of the fourth MOS tube, and the sixth resistor R6 pulls the drain voltage down to the ground potential. The control unit 200 can detect that the output second power-off detection signal is a low-level signal, and it is determined that the user has not arrived next to the motor vehicle to unlock it.

[0082] This design ensures that the circuit can correctly detect and output corresponding detection signals when the power-on button is in different states.

[0083] like Figure 5 As shown, Figure 5 : is a flow chart of a power-on self-locking method in an embodiment, which is applied to the above-mentioned power-on self-locking circuit. The steps provided by the power-on self-locking method in this embodiment include:

[0084] S501, when the signal detection unit detects a power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal.

[0085] In this step, when the signal detection unit detects a power-on control signal (such as a voltage signal or a logic signal), the detected power-on control signal is converted into a power-on detection signal and output to the control unit to trigger a subsequent power-on operation.

[0086] Optionally, the signal detection unit includes a faucet lock signal detection module and a button signal detection module, which are respectively responsible for different types of power-on control signal detection. This step can specifically perform the following sub-steps:

[0087] A1: When the faucet lock signal detection module detects the faucet lock power-on control signal, it responds to the faucet lock power-on control signal and outputs a first power-on detection signal.

[0088] This indicates that the faucet lock is detected to be in the lifted state.

[0089] A2: When the button signal detection module detects the power-on button control signal, it responds to the power-on button control signal and outputs a second power-on detection signal.

[0090] This indicates that the power-on button is detected to have been pressed, triggering the power-on button control signal.

[0091] S502, when the control unit receives a power-on detection signal, it responds to the power-on detection signal and outputs a power-on driving signal.

[0092] In this step, the control unit processes the power-on detection signal according to predetermined logic and conditions and generates a power-on drive signal, and then outputs it to the self-locking unit or other related circuit parts to start the power-on process.

[0093] Optionally, when the control unit inputs the first power-on detection signal and the second power-on detection signal, it responds to the first power-on detection signal and the second power-on detection signal and outputs a power-on driving signal.

[0094] This means that when all conditions are met, that is, when the faucet lock is in the lifted state and the power-on button has been pressed, the control unit outputs a power-on drive signal to ensure that the system starts the power-on process when all predetermined conditions are met.

[0095] S503, when the relay of the self-locking unit receives a power-on detection signal, it responds to the power-on drive signal and switches to a conducting state.

[0096] S504, after the relay is in the on state, the locking switch remains closed, so that the battery is powered on and self-locked for the vehicle controller via the relay and the locking switch.

[0097] The above steps S503 and S504 describe the key operation process in the power-on self-locking method. After receiving the power-on drive signal, the relay switches to the on state, allowing current to pass through the relay. After the relay is turned on, the locking switch remains closed to ensure that the battery continues to power the on-board controller through the relay and the locking switch, achieving power-on self-locking. This process ensures the stability and continuity of the circuit after power-on, avoiding the occurrence of accidental power outages.

[0098] like Figure 6 As shown, Figure 6 : is a flowchart of a power-off method in an embodiment, which is applied to the above-mentioned power-on self-locking circuit. The steps provided by the power-off method in this embodiment include:

[0099] S601, when the signal detection unit detects a power-off control signal, it responds to the power-off control signal and outputs a power-off detection signal.

[0100] In this step, after receiving the power-off control signal, the signal detection unit converts it into a power-off detection signal and outputs it to the control unit to trigger a subsequent power-off operation.

[0101] Optionally, the signal detection unit includes a faucet lock signal detection module and a button signal detection module, which are respectively responsible for different types of power-on control signal detection. This step can specifically perform the following sub-steps:

[0102] B1: When the faucet lock signal detection module detects the faucet lock power-off control signal, it responds to the faucet lock power-off control signal and outputs a first power-off detection signal.

[0103] This indicates that the faucet lock is detected to be locked.

[0104] B2: When the button signal detection module detects the power-off button control signal, it responds to the power-off button control signal and outputs a second power-off detection signal.

[0105] This means that it is detected that the power-on button is not pressed, triggering the power-off button control signal.

[0106] S602: When a power-off detection signal is input to the control unit, the control unit responds to the power-off detection signal and outputs a power-off driving signal.

[0107] In this step, the control unit processes the power-off detection signal according to predetermined logic and conditions, and generates a power-off drive signal, which is output to the self-locking unit or other related circuit parts to start the power-off process.

[0108] Optionally, when the control unit inputs the first power-off detection signal and the second power-off detection signal, it responds to the first power-off detection signal and the second power-off detection signal and outputs a power-off driving signal.

[0109] This means that the control unit outputs a power-off drive signal when all conditions are met, that is, when the faucet lock is in a locked state and the power-on button is not pressed, to ensure that the system starts the power-off process when all predetermined conditions are met.

[0110] S603, when the relay of the self-locking unit receives a power-off detection signal, it responds to the power-off drive signal and switches to a disconnected state.

[0111] S604, after the relay is in the disconnected state, the locking switch is disconnected so that the power-on self-locking circuit is powered off.

[0112] The above steps S601 to S604 are the key parts of the power-off method, ensuring the safety and stability of the circuit after power-off. After the signal detection unit detects the power-off control signal, it outputs a power-off detection signal. The control unit generates a power-off drive signal according to the detection signal. After receiving the power-off drive signal, the relay switches to the disconnected state, the locking switch is disconnected, and the battery can no longer power the on-board controller, so the power-on self-locking circuit is powered off.

[0113] The present invention also provides a vehicle, including a power-on self-locking circuit. Through the coordinated work of a signal detection unit, a control unit and a self-locking unit, the vehicle achieves efficient and reliable power supply control, greatly improving driving safety.

[0114] It should be noted that the above-mentioned power-on self-locking circuit, power-on and power-off method and vehicle belong to a general inventive concept, and the contents in the power-on self-locking circuit, power-on and power-off method and vehicle embodiments are applicable to each other.

[0115] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0116] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A power-on self-locking circuit, characterized in that: The power-on self-locking circuit comprises: A signal detection unit, used to respond to the detected power-on control signal and output a power-on detection signal; A control unit, connected to the signal detection unit, configured to respond to the power-on detection signal and output a power-on drive signal; A self-locking unit, the self-locking unit comprising a first diode, a second diode, a relay, a locking switch, an on-board controller and a battery; The anode of the first diode is connected to the control unit, and the cathode of the first diode is connected to the first end of the relay; The anode of the second diode is connected to the first end of the vehicle-mounted controller, the cathode of the second diode is connected to the first end of the relay, and the second end of the vehicle-mounted controller is grounded; The second end of the relay is connected to the first end of the vehicle controller through the locking switch, and the third end of the relay is grounded through the battery. The relay is used to respond to the power-on drive signal and switch to the on state, and the locking switch remains closed after the relay is in the on state.

2. The power-on self-locking circuit according to claim 1, characterized in that: The self-locking unit includes: a first MOS tube, a second MOS tube, a first resistor, a second resistor, a first diode, a second diode, a relay, a locking switch, a vehicle controller and a battery; The gate of the first MOS tube is connected to the control unit, the source of the first MOS tube is grounded, and the drain of the first MOS tube is connected to the gate of the second MOS tube; The source of the second MOS tube is connected to the battery, the drain of the second MOS tube is connected to the positive electrode of the first diode, and the second resistor is connected in parallel between the gate and the source of the second MOS tube; The cathode of the first diode is connected to the first end of the relay, and the relay is powered on after the power-on drive signal is input; The anode of the second diode is connected to the first end of the vehicle-mounted controller, the cathode of the second diode is connected to the first end of the relay, and the second end of the vehicle-mounted controller is grounded; The second end of the relay is connected to the first end of the vehicle controller through the locking switch, the third end of the relay is grounded through the battery, and the locking switch remains closed after the relay is powered on.

3. The power-on self-locking circuit according to claim 1, characterized in that: The signal detection unit includes a faucet lock signal detection module, and the faucet lock signal detection module includes a third MOS tube, a third resistor, a fourth resistor and a third diode; The cathode of the third diode inputs the faucet lock power-on control signal, the anode of the third diode is connected to the source of the third MOS tube, and the third resistor is connected in parallel between the gate and the source of the third MOS tube; The source of the third MOS tube is connected to the power supply, the drain of the third MOS tube is grounded through the fourth resistor, and the third MOS tube responds to the faucet lock power-on control signal and outputs a first power-on detection signal from the drain.

4. The power-on self-locking circuit according to claim 1, characterized in that: The signal detection unit includes a button signal detection module, and the button signal detection module includes a fourth MOS tube, a fifth resistor, a sixth resistor and a fourth diode; The cathode of the fourth diode inputs a power-on button control signal, the anode of the fourth diode is connected to the source of the fourth MOS tube, and the fifth resistor is connected in parallel between the gate and the source of the fourth MOS tube; The source of the fourth MOS tube is connected to the power supply, the drain of the fourth MOS tube is grounded through the sixth resistor, and the fourth MOS tube responds to the power-on button control signal and outputs a second power-on detection signal from the drain.

5. A power-on self-locking method, characterized in that: Applied to the power-on self-locking circuit as claimed in claim 1, the method comprises: When the signal detection unit detects a power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal; When the control unit receives the power-on detection signal, it responds to the power-on detection signal and outputs a power-on driving signal; When the relay of the self-locking unit receives the power-on detection signal, it responds to the power-on drive signal and switches to a conducting state; After the relay is in the conducting state, the locking switch remains closed, so that the battery is powered on and self-locked for the onboard controller via the relay and the locking switch.

6. The method according to claim 5, characterized in that The signal detection unit includes a faucet lock signal detection module and a button signal detection module. When the signal detection unit detects a power-on control signal, it responds to the power-on control signal and outputs a power-on detection signal, including: When the faucet lock signal detection module detects the faucet lock power-on control signal, it responds to the faucet lock power-on control signal and outputs a first power-on detection signal; When the button signal detection module detects a power-on button control signal, it responds to the power-on button control signal and outputs a second power-on detection signal; When the control unit inputs the power-on detection signal, responding to the power-on detection signal and outputting a power-on driving signal includes: When the control unit inputs the first power-on detection signal and the second power-on detection signal, it responds to the first power-on detection signal and the second power-on detection signal and outputs a power-on driving signal.

7. A power-off method, characterized in that: Applied to the power-on self-locking circuit as claimed in claim 1, the method comprises: When the signal detection unit detects a power-off control signal, it responds to the power-off control signal and outputs a power-off detection signal; When the control unit receives the power-off detection signal, it responds to the power-off detection signal and outputs a power-off driving signal; When the relay of the self-locking unit receives the power-off detection signal, it responds to the power-off drive signal and switches to the disconnected state; After the relay is in the disconnected state, the locking switch is turned off to power off the power-on self-locking circuit.

8. The method according to claim 7, characterized in that The signal detection unit includes a faucet lock signal detection module and a button signal detection module. When the signal detection unit detects a power-off control signal, it responds to the power-off control signal and outputs a power-off detection signal, including: When the faucet lock signal detection module detects the faucet lock power-off control signal, it responds to the faucet lock power-off control signal and outputs a first power-off detection signal; When the button signal detection module detects a power-off button control signal, it responds to the power-off button control signal and outputs a second power-off detection signal; When the control unit receives the power-off detection signal, responding to the power-off detection signal and outputting a power-off driving signal includes: When the control unit receives the first power-off detection signal and the second power-off detection signal, it responds to the first power-off detection signal and the second power-off detection signal and outputs a power-off driving signal.

9. A vehicle, characterized in that: The vehicle comprises the power-on self-locking circuit according to any one of claims 1-4.

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