Self-protection and pressure self-regulation method, device, equipment and medium of high-pressure water pump

Abstract

The application discloses a kind of self-protection and pressure self-regulation method, device, equipment and medium of high-pressure water pump, comprising: BCM sends first cleaning instruction to MCU;MCU sends first water spraying signal to high-pressure water pump according to first cleaning instruction;Pressure sensor detects the first feedback pressure of high-pressure water pump, and sends first feedback pressure to MCU;If MCU determines that first feedback pressure is lower than preset standard water pressure, and high-pressure water pump is in fault state, then send fault warning signal to BCM;If MCU determines that first feedback pressure is lower than preset standard water pressure, and high-pressure water pump is not in fault state, then generate first pressure-increasing thread, and send pressure warning signal to BCM;BCM sends second cleaning instruction to MCU;MCU triggers first pressure-increasing thread according to second cleaning instruction.The application improves the cleaning effect of automobile radar, realizes the protection force of improving the protection of high-pressure water pump, and prevents the effect of motor damage.

Description

Technical Field

[0001] This invention relates to the field of devices for starting electric motors or electromechanical converters, and more particularly to a method, device, equipment, and medium for self-protection and pressure self-regulation of a high-pressure water pump. Background Technology

[0002] Existing high-pressure water pumps used for cleaning car radars are typically brushed motors that do not have their own controllers and rely solely on the voltage supplied to the motor by the vehicle's controller.

[0003] The newly released high-pressure water pumps on the market simply accept the speed command from the vehicle body controller to control the motor to run at a specified speed. This results in the high-pressure water pump being unable to regulate the output water pressure and timely identify faults, leading to poor cleaning effect of the car radar and insufficient protection of the high-pressure water pump. Summary of the Invention

[0004] The purpose of this invention is to provide a method, device, equipment, and medium for self-protection and pressure self-regulation of a high-pressure water pump, in order to solve the problems of poor cleaning effect of automotive radar and insufficient protection of high-pressure water pumps in the prior art.

[0005] To achieve the above objectives, the present invention provides a self-protection and pressure self-regulation method for a high-pressure water pump, which is applied in a self-protection and pressure self-regulation system to drive the high-pressure water pump to spray a high-pressure water jet towards a car radar; the self-protection and pressure self-regulation system includes: an MCU, a pressure sensor, and a BCM; the MCU is connected to the high-pressure water pump, the pressure sensor is connected to the high-pressure water pump, and the MCU is also connected to the BCM; The self-protection and pressure self-regulation method includes: The BCM sends a first cleaning command to the MCU; The MCU sends a first water spray signal to the high-pressure water pump according to the first cleaning command; the first water spray signal is used to instruct the high-pressure water pump to spray a high-pressure water jet toward the lidar at a first indicated rotation speed. The pressure sensor detects the first feedback pressure of the high-pressure water pump and sends the first feedback pressure to the MCU; If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is in a fault state, it sends a fault warning signal to the BCM. If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is not in a fault state, it generates a first boosting thread and sends a pressure warning signal to the BCM; wherein, the first boosting thread is used to instruct the high-pressure water pump to spray a high-pressure water jet onto the lidar at a first boosting speed; the first boosting speed is greater than the first indicated speed. The BCM sends a second cleaning command to the MCU; the second cleaning command is a cleaning command sent by the BCM to the MCU after receiving the pressure warning signal. The MCU triggers the first boost thread according to the second cleaning instruction.

[0006] In the above scheme, the first feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump or the actual water pressure at the outlet of the high-pressure water pump when the high-pressure water pump sprays a high-pressure water column towards the lidar at the first indicated rotation speed.

[0007] In the above scheme, the fault state includes an idling state; the fault warning signal includes a water filling warning signal; If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is in a fault state, it sends a fault warning signal to the BCM, including: If the MCU determines that the first feedback pressure is lower than the preset standard water pressure, it will collect the speed information of the high-pressure water pump. If the MCU determines that the first feedback pressure is lower than the preset idling water pressure and the speed information is not lower than the preset standard speed, then it determines that the fault state is an idling state and sends a water filling warning signal to the BCM; wherein the idling water pressure is lower than the standard water pressure.

[0008] In the above scheme, the fault state includes a stalled state; the fault warning signal includes a stalled warning signal; If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is in a fault state, it sends a fault warning signal to the BCM, including: If the MCU determines that the first feedback pressure is lower than the preset standard water pressure, it will collect the current information of the high-pressure water pump. If the MCU determines that the first feedback pressure is lower than the preset stall water pressure and the current information is higher than the preset stall current threshold, then it determines that the fault state is a stall state, sends a stall warning signal to the BCM, and stops the operation of the high-pressure water pump; wherein the stall water pressure is lower than the standard water pressure.

[0009] In the above scheme, if the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is not in a fault state, then a first boosting thread is generated, including: The MCU divides the standard water pressure by the first feedback pressure to obtain the first pressure boosting ratio; The MCU obtains the rotation speed and water pressure mapping table, and obtains the first indicated pressure corresponding to the first indicated rotation speed. The first indicated pressure is multiplied by the first boosting ratio to obtain the first boosting pressure. The MCU obtains the rotation speed corresponding to the first boosting pressure from the rotation speed-water pressure mapping table, and uses it as the first boosting rotation speed; The first boost thread is generated based on the first boost speed.

[0010] In the above scheme, after the MCU triggers the first boost thread according to the second cleaning instruction, the method further includes: The pressure sensor detects the second feedback pressure of the high-pressure water pump and sends the first feedback pressure to the MCU; wherein, the second feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump or the actual water pressure at the outlet of the high-pressure water pump when the high-pressure water pump sprays a high-pressure water column towards the lidar at a first boost speed. If the MCU determines that the second feedback pressure is lower than the standard water pressure, it generates a second boosting thread and sends an upgrade warning signal to the BCM; the second boosting thread is used to instruct the high-pressure water pump to spray a high-pressure water jet onto the lidar at a second boosting speed; the second boosting speed is greater than the first boosting speed.

[0011] In the above scheme, after the MCU determines that the second feedback pressure is lower than the standard water pressure and generates a second pressurization thread, the method further includes: The BCM sends a third cleaning command to the MCU; the third cleaning command is a cleaning command sent by the BCM to the MCU after receiving the upgrade warning signal. The MCU triggers the second boost thread according to the third cleaning instruction; The pressure sensor detects the third feedback pressure of the high-pressure water pump and sends the third feedback pressure to the MCU; wherein, the third feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump or the actual water pressure at the outlet of the high-pressure water pump when the high-pressure water pump sprays a high-pressure water column towards the lidar at the second boost speed. If the MCU determines that the three feedback pressures are lower than the standard water pressure, it sends a motor warning signal to the BCM.

[0012] To achieve the above objectives, the present invention also provides a self-protection and pressure self-regulation system for a high-pressure water pump, which operates the above-mentioned self-protection and pressure self-regulation method and is used to drive the high-pressure water pump to spray a high-pressure water jet towards a car radar; the self-protection and pressure self-regulation system includes: an MCU, a pressure sensor, and a BCM; the MCU is connected to the high-pressure water pump, the pressure sensor is connected to the high-pressure water pump, and the MCU is also connected to the BCM; The BCM is configured to send a first cleaning command to the MCU; The MCU is configured to send a first water spray signal to the high-pressure water pump according to the first cleaning command; the first water spray signal is used to instruct the high-pressure water pump to spray a high-pressure water jet toward the lidar at a first indicated rotation speed. The pressure sensor is configured to detect a first feedback pressure of the high-pressure water pump and send the first feedback pressure to the MCU; The MCU is configured to send a fault warning signal to the BCM if it determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is in a fault state. The MCU is configured to generate a first boosting thread and send a pressure warning signal to the BCM if it is determined that the first feedback pressure is lower than a preset standard water pressure and the high-pressure water pump is not in a fault state; the first boosting thread is used to instruct the high-pressure water pump to spray a high-pressure water jet onto the lidar at a first boosting speed; the first boosting speed is greater than the first indicated speed. The BCM is configured to send a second cleaning command to the MCU; the second cleaning command is a cleaning command sent by the BCM to the MCU after receiving the pressure warning signal. The MCU is configured to trigger the first boost thread according to the second cleaning instruction.

[0013] To achieve the above objectives, the present invention also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor of the electronic device executes the computer program, it implements the steps of the above-described self-protection and pressure self-regulation method for a high-pressure water pump.

[0014] To achieve the above objectives, the present invention also provides a computer-readable storage medium storing a computer program, wherein when the computer program stored in the storage medium is executed by a processor, it implements the steps of the above-described self-protection and pressure self-regulation method for a high-pressure water pump.

[0015] This invention provides a self-protection and pressure self-regulation method, device, equipment, and medium for a high-pressure water pump. By detecting the first feedback pressure of the high-pressure water pump and constructing a first pressurization process based on the first feedback pressure, the water pressure of the high-pressure water pump spraying high-pressure water jets onto the lidar is increased. This achieves the technical effect of regulating the output water pressure of the high-pressure water pump, thereby improving the cleaning effect of the automotive lidar.

[0016] Meanwhile, by identifying whether the high-pressure water pump is in a faulty state, timely detection of motor faults in the high-pressure water pump is achieved, and a fault warning signal is sent to the BCM4 to provide a warning, thereby enhancing the protection of the high-pressure water pump and preventing motor damage. Attached Figure Description

[0017] Figure 1 This is a flowchart of an embodiment of the self-protection and pressure self-regulation method for the high-pressure water pump of the present invention; Figure 2 This is a schematic block diagram of the self-protection and pressure self-regulation system of the high-pressure water pump of the present invention. Figure 3 This is a communication interaction diagram between the MCU, pressure sensor, BCM and high-pressure water pump in the self-protection and pressure self-regulation system of the high-pressure water pump of the present invention. Figure 4 This is a schematic diagram of the hardware structure of the electronic device in Embodiment 4 of the present invention.

[0018] Figure label: 1. Self-protection and pressure self-regulation system; 2: MCU; 3: Pressure sensor; 4: BCM; 5: High-pressure water pump. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0020] Definitions: An MCU (Microcontroller Unit) is a single-chip embedded control chip that integrates a central processing unit, memory, analog-to-digital converter, communication peripherals, and drive output circuits. In this system, it acts as a local closed-loop controller, responsible for acquiring pressure signals, calculating speed regulation logic, diagnosing faults, and exchanging instructions and alarm signals with the BCM.

[0021] Pressure sensors are a type of detection device that can convert the physical quantity of water pressure into a standard electrical signal that can be recognized by an MCU. They are installed in the pump chamber or outlet of a water pump to collect the actual water pressure in real time, providing feedback sampling data for pressure closed-loop regulation and fault diagnosis.

[0022] The BCM (Body Control Module) is the central control unit of the vehicle body domain and the upper-level scheduling host of the vehicle's electrical system. It receives in-vehicle cleaning trigger commands, sends basic speed cleaning commands downwards, receives water pressure warnings, water shortage warnings, stall warnings, and motor fault warnings uploaded by the MCU, and links the instrument panel to alert the driver of abnormalities.

[0023] The high-pressure water pump (vehicle-mounted radar cleaning high-pressure water pump) is a fluid booster actuator equipped with a brushed drive motor. It receives the speed control drive signal output by the MCU and boosts the output of high-pressure water through the impeller. It is used to rinse the dirt on the optical lens of the lidar and is the execution terminal to realize the radar cleaning function.

[0024] Example 1: Please refer to Figures 1-3 This application provides a self-protection and pressure self-regulation method for a high-pressure water pump, applied in a self-protection and pressure self-regulation system 1, used to drive a high-pressure water pump 5 to spray a high-pressure water jet towards a car radar; the self-protection and pressure self-regulation system 1 includes: MCU2, pressure sensor 3, and BCM4; the MCU2 is connected to the high-pressure water pump 5, the pressure sensor 3 is connected to the high-pressure water pump 5, and the MCU2 is also connected to the BCM4; The self-protection and pressure self-regulation method includes: S101: The BCM4 sends a first cleaning command to the MCU2; S102: The MCU2 sends a first water spray signal to the high-pressure water pump 5 according to the first cleaning command; the first water spray signal is used to instruct the high-pressure water pump 5 to spray a high-pressure water jet toward the lidar at a first indicated rotation speed; S103: The pressure sensor 3 detects the first feedback pressure of the high-pressure water pump 5 and sends the first feedback pressure to the MCU2; S104: If the MCU2 determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump 5 is in a fault state, it sends a fault warning signal to the BCM4. S105: If the MCU2 determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump 5 is not in a fault state, it generates a first boosting thread and sends a pressure warning signal to the BCM4; wherein, the first boosting thread is used to instruct the high-pressure water pump 5 to spray a high-pressure water jet onto the lidar at a first boosting speed; the first boosting speed is greater than the first indicated speed. S106: The BCM4 sends a second cleaning command to the MCU2; the second cleaning command is a cleaning command sent by the BCM4 to the MCU2 after receiving the pressure warning signal; S107: The MCU2 triggers the first boost thread according to the second cleaning instruction.

[0025] In this example, by detecting the first feedback pressure of the high-pressure water pump 5 and constructing a first pressurization process based on the first feedback pressure, the water pressure of the high-pressure water pump 5 spraying high-pressure water jets onto the lidar is increased, thereby achieving the technical effect of regulating the output water pressure of the high-pressure water pump 5 and improving the cleaning effect of the car radar.

[0026] Meanwhile, by identifying whether the high-pressure water pump 5 is in a faulty state, timely detection of faults in the motor of the high-pressure water pump 5 is achieved, and a fault warning signal is sent to the BCM4 to provide a warning, thereby enhancing the protection of the high-pressure water pump 5 and preventing damage to the motor.

[0027] In this embodiment, a pressure sensor 3 is added, which enables real-time pressure adjustment based on pressure feedback. The vehicle can also more accurately control the pressure output at the pump head position, resulting in higher cleaning efficiency. At the same time, based on the signal from the pressure sensor 3, the water pump MCU2 can also perform some protection logic settings for abnormal operating conditions.

[0028] For example, this high-pressure water pump 5 has a pressure sensor 3 placed at the outlet or inside the pump chamber. This pressure sensor 3 can monitor the pressure inside the pump chamber or at the outlet in real time and then send it to the MCU2 of the water pump. When the water pump MCU2 receives the instruction from the vehicle BCM4 to operate at a certain pressure, the water pump MCU2 will output an initial operating speed (i.e., the first indicated speed). At the same time, the water pump has a default speed-pressure correspondence at the factory, which is written into the MCU2. During operation, the output PWM wave is adjusted in real time to regulate the speed by detecting the pressure signal (first feedback pressure) so that the pressure requirement is met in real time. Since the cleaning pump operates for a short time and only for 3 seconds, if the target pressure is not reached in the next cycle, and the operation is normal and not identified as idling or stalling, the signal that the pressure has not reached the target is fed back to the vehicle BCM4. BCM4 can choose to send the cleaning command to the water pump again, or not. Meanwhile, the water pump motor MCU2 will remember the state of not reaching the target pressure last time. When the cleaning command is received again, it will actively increase the initial speed to increase the pressure when it starts running, and correct the initial speed value corresponding to each output pressure according to the current speed and pressure. This corresponding value can be dynamically adjusted in real time later.

[0029] In a preferred embodiment, the first feedback pressure is the actual water pressure inside the pump chamber of the high-pressure water pump 5 or the actual water pressure at the outlet of the high-pressure water pump 5 when the high-pressure water pump 5 sprays a high-pressure water column to the lidar at a first indicated rotation speed.

[0030] In this example, pressure sensor 3 is placed inside the pump chamber or at the outlet to directly collect the actual water pressure as the feedback sampling value. Both locations can accurately collect the actual water pressure, and the sampling data closely matches the actual water spraying conditions, resulting in more accurate pressure judgment and preventing misjudgments in pressure boosting adjustment and fault identification.

[0031] In a preferred embodiment, the fault state includes an idling state; the fault warning signal includes a water filling warning signal; S104: If the MCU2 determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump 5 is in a fault state, it sends a fault warning signal to the BCM4, including: S41: If the MCU2 determines that the first feedback pressure is lower than the preset standard water pressure, it collects the rotational speed information of the high-pressure water pump 5. S42: If the MCU2 determines that the first feedback pressure is lower than the preset idling water pressure and the speed information is not lower than the preset standard speed, then the fault state is determined to be an idling state, and a water filling warning signal is sent to the BCM4; wherein the idling water pressure is lower than the standard water pressure.

[0032] In this example, two sets of data, water pressure and speed, are collected simultaneously and cross-checked. If the speed is normal but the water pressure is extremely low, it is determined that the cleaning kettle is running dry. MCU2 stops and reports to BCM4 via the bus to remind the driver to add water. This distinguishes between running dry and normal pipeline depressurization to avoid accidental pressurization; timely shutdown prevents the water pump from burning out due to dry running, and simultaneously reminds the user to add water.

[0033] For example, when the pressure is lower than the idling water pressure while the speed is normal, it can be determined that the motor is idling. At this time, the motor needs to be stopped, and the user should be notified via LIN to BCM4 that the water in the kettle is low and needs to be added.

[0034] In a preferred embodiment, the fault state includes a stalled state; the fault warning signal includes a stall warning signal; S104: If the MCU2 determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump 5 is in a fault state, it sends a fault warning signal to the BCM4, including: S43: If the MCU2 determines that the first feedback pressure is lower than the preset standard water pressure, it collects the current information of the high-pressure water pump 5. S44: If the MCU2 determines that the first feedback pressure is lower than the preset stall water pressure and the current information is higher than the preset stall current threshold, then the MCU2 determines that the fault state is a stall state, sends a stall warning signal to the BCM4, and stops the operation of the high-pressure water pump 5; wherein the stall water pressure is lower than the standard water pressure.

[0035] In this example, by combining water pressure and operating current for cross-judgment, low water pressure and excessive current indicate that the pipeline and pump body are stuck and locked. The MCU2 directly cuts off the water pump drive. This quickly identifies the lock-up fault and immediately stops the machine to prevent the motor from burning out due to overcurrent, while simultaneously reporting to the vehicle body controller for maintenance.

[0036] For example, when the current is higher than a certain threshold and the pressure is lower than a certain threshold, it is identified as a stall, and the motor of the high-pressure water pump 5 needs to be stopped.

[0037] In a preferred embodiment, S105: If the MCU2 determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump 5 is not in a fault state, then a first boosting thread is generated, including: S51: The MCU2 divides the standard water pressure by the first feedback pressure to obtain the first pressure boosting ratio; S52: The MCU2 obtains the rotation speed and water pressure mapping table, and obtains the first indicated pressure corresponding to the first indicated rotation speed. The first indicated pressure is multiplied by the first boosting ratio to obtain the first boosting pressure. S53: The MCU2 obtains the rotation speed corresponding to the first boosting pressure from the rotation speed-water pressure mapping table, and uses it as the first boosting rotation speed; S54: Generate the first boosting thread based on the first boosting speed.

[0038] In this example, a mapping table of rotation speed and water pressure is pre-stored. The target boost pressure is calculated by proportionally converting the pressure difference, and the corresponding operating speed is matched by looking up the table to achieve precise pressure boosting. The pressure boosting adjustment is quantitative and controllable, the rotation speed is accurately matched, and there is no excessive pressure boosting that could impact the radar lens. The water pressure is stably replenished to the standard range, resulting in uniform cleaning effect.

[0039] MCU2 creates an independent real-time scheduling thread, which continuously outputs the corresponding PWM drive signal to keep the water pump running stably at the first boost speed. At the same time, it periodically reads data from pressure sensor 3 for closed-loop verification. The separate thread independently manages the boost speed control logic, without blocking the fault detection and pressure acquisition process, resulting in faster control response and continuous pressure closed-loop effectiveness.

[0040] In a preferred embodiment, S107: After the MCU2 triggers the first boost thread according to the second cleaning instruction, the method further includes: S108: The pressure sensor 3 detects the second feedback pressure of the high-pressure water pump 5 and sends the first feedback pressure to the MCU2; wherein, the second feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump 5 or the actual water pressure at the outlet of the high-pressure water pump 5 when the high-pressure water pump 5 sprays a high-pressure water column to the lidar at the first boost speed. S109: If the MCU2 determines that the second feedback pressure is lower than the standard water pressure, it generates a second boosting thread and sends an upgrade warning signal to the BCM4; the second boosting thread is used to instruct the high-pressure water pump 5 to spray a high-pressure water jet onto the lidar at a second boosting speed; the second boosting speed is greater than the first boosting speed.

[0041] In this example, after pressurization, the water pressure is checked again. If the water pressure is still insufficient, the rotation speed is gradually increased for a second pressurization. Therefore, multi-stage gradient pressurization is achieved to gradually supplement the pressure, avoiding damage to the radar caused by a sudden increase in water pressure due to a single large speed increase, and continuously ensuring that the cleaning water pressure meets the standard.

[0042] Optionally, S109: If the MCU2 determines that the second feedback pressure is lower than the standard water pressure, it generates a second pressurization thread, including: S91: The MCU2 divides the standard water pressure by the second feedback pressure to obtain the second pressure boosting ratio; S92: The MCU2 obtains the rotation speed and water pressure mapping table, and obtains the second indicated pressure corresponding to the second indicated rotation speed. The second indicated pressure is multiplied by the second boosting ratio to obtain the second boosting pressure. S93: The MCU2 obtains the rotation speed corresponding to the second boosting pressure from the rotation speed-water pressure mapping table, and uses it as the second boosting rotation speed; S94: Generate the second boosting thread according to the second boosting speed.

[0043] In this example, a preset speed-pressure mapping table is reused to calculate the pressure increase ratio based on the current actual pressure difference, accurately converting it into the next stage of speed increase to achieve gradient quantitative pressure increase. Therefore, precise quantitative adjustment of the two-stage pressure increase is achieved, with stable pressure compensation at each stage, preventing sudden speed changes from impacting the radar, and steadily adjusting the water pressure to the standard range, resulting in stable and controllable cleaning performance.

[0044] MCU2 creates a new independent scheduling thread that cyclically outputs PWM drive waveforms matching the second boost speed to continuously control the pump, while periodically collecting water pressure for closed-loop monitoring. The multi-stage boost threads are independent of each other, and the speed control logic does not interfere with pressure sampling and fault diagnosis tasks, ensuring smooth and lag-free multi-stage boost control.

[0045] In a preferred embodiment, S109: If the MCU2 determines that the second feedback pressure is lower than the standard water pressure, and generates a second pressurization thread and sends an upgrade warning signal to the BCM4, the method further includes: S110: The BCM4 sends a third cleaning instruction to the MCU2; the third cleaning instruction is a cleaning instruction sent by the BCM4 to the MCU2 after receiving the upgrade warning signal; S111: The MCU2 triggers the second boost thread according to the third cleaning instruction; S112: The pressure sensor 3 detects the third feedback pressure of the high-pressure water pump 5 and sends the third feedback pressure to the MCU2; wherein, the third feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump 5 or the actual water pressure at the outlet of the high-pressure water pump 5 when the high-pressure water pump 5 sprays a high-pressure water column to the lidar at the second boosting speed. S113: If the MCU2 determines that the three feedback pressures are lower than the standard water pressure, it sends a motor warning signal to the BCM4.

[0046] In this example, after completing two stages of gradient pressurization, the water pressure is checked again. If the pressure still fails to meet the standard after multiple pressurization attempts, it is determined that the water pump hardware is malfunctioning, and a motor alarm is issued. Therefore, the multi-stage pressure verification filter pipeline will only issue a motor fault warning when there is a water shortage or pressure drop, reducing false alarms and providing early reminders for water pump maintenance.

[0047] Example 2: Please refer to Figure 2 This application provides a self-protection and pressure self-regulation system 1 for a high-pressure water pump, which operates the self-protection and pressure self-regulation method described in Embodiment 1, and is used to drive the high-pressure water pump 5 to spray a high-pressure water jet towards a car radar; the self-protection and pressure self-regulation system 1 includes: MCU2, pressure sensor 3, and BCM4; the MCU2 is connected to the high-pressure water pump 5, the pressure sensor 3 is connected to the high-pressure water pump 5, and the MCU2 is also connected to the BCM4; The BCM4 is configured to send a first cleaning command to the MCU2; The MCU2 is configured to send a first water spray signal to the high-pressure water pump 5 according to the first cleaning command; the first water spray signal is used to instruct the high-pressure water pump 5 to spray a high-pressure water jet toward the lidar at a first indicated rotation speed. The pressure sensor 3 is configured to detect the first feedback pressure of the high-pressure water pump 5 and send the first feedback pressure to the MCU2; The MCU2 is configured to send a fault warning signal to the BCM4 if it is determined that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump 5 is in a fault state. The MCU2 is configured to generate a first boosting thread and send a pressure warning signal to the BCM4 if it is determined that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump 5 is not in a fault state; the first boosting thread is used to instruct the high-pressure water pump 5 to spray a high-pressure water jet onto the lidar at a first boosting speed; the first boosting speed is greater than the first indicated speed. The BCM4 is configured to send a second cleaning command to the MCU2; the second cleaning command is a cleaning command sent by the BCM4 to the MCU2 after receiving the pressure warning signal. The MCU2 is configured to trigger the first boost thread according to the second cleaning instruction.

[0048] Optionally, the pressure sensor 3 is further configured to detect the second feedback pressure of the high-pressure water pump 5 and send the first feedback pressure to the MCU2; wherein, the second feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump 5 or the actual water pressure at the outlet of the high-pressure water pump 5 when the high-pressure water pump 5 sprays a high-pressure water column to the lidar at a first boost speed. The MCU2 is further configured to generate a second boosting thread if it is determined that the second feedback pressure is lower than the standard water pressure; the second boosting thread is used to instruct the high-pressure water pump 5 to spray a high-pressure water jet onto the lidar at a second boosting speed; the second boosting speed is greater than the first boosting speed.

[0049] Optionally, the pressure sensor 3 is further configured to detect the third feedback pressure of the high-pressure water pump 5 and send the third feedback pressure to the MCU2; wherein, the third feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump 5 or the actual water pressure at the outlet of the high-pressure water pump 5 when the high-pressure water pump 5 sprays a high-pressure water column to the lidar at the second boosting speed. The MCU2 is also configured to send a motor warning signal to the BCM4 if it is determined that the three feedback pressures are lower than the standard water pressure.

[0050] Example 3: To achieve the above objectives, the present invention also provides an electronic device 30. The components of the self-protection and pressure self-regulation device of the high-pressure water pump in Example 3 can be distributed in different electronic devices. The electronic device 30 can be an MCU executing a program, a BCM, a sensor assembly, a microcontroller, an integrated circuit, etc. The electronic device in this embodiment includes, but is not limited to, a memory 301 and a processor 302 that can communicate with each other via a system bus, such as... Figure 4 As shown. It should be noted that, Figure 4 Only electronic devices with components are shown; however, it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0051] In this embodiment, the memory 301 (i.e., the readable storage medium) includes flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, disk, optical disk, etc. In some embodiments, the memory 301 can be an internal storage unit of an electronic device, such as the hard disk or memory of the electronic device. In other embodiments, the memory 301 can also be an external storage device of the electronic device, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the electronic device. Of course, the memory 301 can also include both the internal storage unit and the external storage device of the electronic device. In this embodiment, the memory 301 is typically used to store the operating system and various application software installed on the electronic device, such as the program code of the self-protection and pressure self-regulation device of the high-pressure water pump in Embodiment 3. In addition, the memory 301 can also be used to temporarily store various types of data that have been output or will be output.

[0052] In some embodiments, processor 302 may be a central processing unit (CPU), controller, microcontroller, microprocessor, or other data processing chip. Processor 302 is typically used to control the overall operation of electronic devices. In this embodiment, processor 302 is used to run program code stored in memory 301 or process data, for example, to operate the self-protection and pressure self-regulation device of a high-pressure water pump to implement the self-protection and pressure self-regulation method of the high-pressure water pump in Embodiment 1.

[0053] Example 4: To achieve the above objectives, the present invention also provides a computer-readable storage medium, such as flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, disk, optical disk, server, App application store, etc., which stores a computer program. When the program is executed by processor 302, it implements the corresponding function. In this embodiment, the computer-readable storage medium is used to store a computer program that implements the self-protection and pressure self-regulation method of the high-pressure water pump. When executed by processor 302, it implements the self-protection and pressure self-regulation method of the high-pressure water pump in Example 1.

[0054] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0055] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method.

[0056] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A self-protection and pressure self-regulation method for a high-pressure water pump, characterized in that, This device is used in a self-protection and pressure self-regulation system to drive a high-pressure water pump to spray a high-pressure water jet onto a car radar. The self-protection and pressure self-regulation system includes an MCU, a pressure sensor, and a BCM. The MCU is connected to the high-pressure water pump, the pressure sensor is connected to the high-pressure water pump, and the MCU is also connected to the BCM. The self-protection and pressure self-regulation method includes: The BCM sends a first cleaning command to the MCU; The MCU sends a first water spray signal to the high-pressure water pump according to the first cleaning command; the first water spray signal is used to instruct the high-pressure water pump to spray a high-pressure water jet toward the lidar at a first indicated rotation speed. The pressure sensor detects the first feedback pressure of the high-pressure water pump and sends the first feedback pressure to the MCU; If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is in a fault state, it sends a fault warning signal to the BCM. If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is not in a fault state, it generates a first boosting thread and sends a pressure warning signal to the BCM; wherein, the first boosting thread is used to instruct the high-pressure water pump to spray a high-pressure water jet onto the lidar at a first boosting speed; the first boosting speed is greater than the first indicated speed. The BCM sends a second cleaning command to the MCU; the second cleaning command is a cleaning command sent by the BCM to the MCU after receiving the pressure warning signal. The MCU triggers the first boost thread according to the second cleaning instruction.

2. The self-protection and pressure self-regulation method according to claim 1, characterized in that, The first feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump or the actual water pressure at the outlet of the high-pressure water pump when the high-pressure water pump sprays a high-pressure water column at the lidar at the first indicated rotation speed.

3. The self-protection and pressure self-regulation method according to claim 1, characterized in that, The fault status includes idling status; the fault warning signal includes a water filling warning signal; If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is in a fault state, it sends a fault warning signal to the BCM, including: If the MCU determines that the first feedback pressure is lower than the preset standard water pressure, it will collect the speed information of the high-pressure water pump. If the MCU determines that the first feedback pressure is lower than the preset idling water pressure and the speed information is not lower than the preset standard speed, then it determines that the fault state is an idling state and sends a water filling warning signal to the BCM; wherein the idling water pressure is lower than the standard water pressure.

4. The self-protection and pressure self-regulation method according to claim 1, characterized in that, The fault status includes a stalled state; the fault warning signal includes a stalled warning signal; If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is in a fault state, it sends a fault warning signal to the BCM, including: If the MCU determines that the first feedback pressure is lower than the preset standard water pressure, it will collect the current information of the high-pressure water pump. If the MCU determines that the first feedback pressure is lower than the preset stall water pressure and the current information is higher than the preset stall current threshold, then it determines that the fault state is a stall state, sends a stall warning signal to the BCM, and stops the operation of the high-pressure water pump; wherein the stall water pressure is lower than the standard water pressure.

5. The self-protection and pressure self-regulation method according to claim 1, characterized in that, If the MCU determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is not in a faulty state, it generates a first boosting thread, including: The MCU divides the standard water pressure by the first feedback pressure to obtain the first pressure boosting ratio; The MCU obtains the rotation speed and water pressure mapping table, and obtains the first indicated pressure corresponding to the first indicated rotation speed. The first indicated pressure is multiplied by the first boosting ratio to obtain the first boosting pressure. The MCU obtains the rotation speed corresponding to the first boosting pressure from the rotation speed-water pressure mapping table, and uses it as the first boosting rotation speed; The first boost thread is generated based on the first boost speed.

6. The self-protection and pressure self-regulation method according to claim 1, characterized in that, After the MCU triggers the first boost thread according to the second cleaning instruction, the method further includes: The pressure sensor detects the second feedback pressure of the high-pressure water pump and sends the first feedback pressure to the MCU; wherein, the second feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump or the actual water pressure at the outlet of the high-pressure water pump when the high-pressure water pump sprays a high-pressure water column towards the lidar at a first boost speed. If the MCU determines that the second feedback pressure is lower than the standard water pressure, it generates a second boosting thread and sends an upgrade warning signal to the BCM; the second boosting thread is used to instruct the high-pressure water pump to spray a high-pressure water jet onto the lidar at a second boosting speed; the second boosting speed is greater than the first boosting speed.

7. The self-protection and pressure self-regulation method according to claim 6, characterized in that, If the MCU determines that the second feedback pressure is lower than the standard water pressure, after generating the second pressurization thread, the method further includes: The BCM sends a third cleaning command to the MCU; the third cleaning command is a cleaning command sent by the BCM to the MCU after receiving the upgrade warning signal. The MCU triggers the second boost thread according to the third cleaning instruction; The pressure sensor detects the third feedback pressure of the high-pressure water pump and sends the third feedback pressure to the MCU; wherein, the third feedback pressure is the actual water pressure in the pump chamber of the high-pressure water pump or the actual water pressure at the outlet of the high-pressure water pump when the high-pressure water pump sprays a high-pressure water column towards the lidar at the second boost speed. If the MCU determines that the three feedback pressures are lower than the standard water pressure, it sends a motor warning signal to the BCM.

8. A self-protection and pressure self-regulation system for a high-pressure water pump, characterized in that, The system comprises the self-protection and pressure self-regulation method according to any one of claims 1-7, used to drive a high-pressure water pump to spray a high-pressure water jet onto a car radar; the self-protection and pressure self-regulation system includes: an MCU, a pressure sensor, and a BCM; the MCU is connected to the high-pressure water pump, the pressure sensor is connected to the high-pressure water pump, and the MCU is also connected to the BCM; The BCM is configured to send a first cleaning command to the MCU; The MCU is configured to send a first water spray signal to the high-pressure water pump according to the first cleaning command; the first water spray signal is used to instruct the high-pressure water pump to spray a high-pressure water jet toward the lidar at a first indicated rotation speed. The pressure sensor is configured to detect a first feedback pressure of the high-pressure water pump and send the first feedback pressure to the MCU; The MCU is configured to send a fault warning signal to the BCM if it determines that the first feedback pressure is lower than the preset standard water pressure and the high-pressure water pump is in a fault state. The MCU is configured to generate a first boosting thread and send a pressure warning signal to the BCM if it is determined that the first feedback pressure is lower than a preset standard water pressure and the high-pressure water pump is not in a fault state; the first boosting thread is used to instruct the high-pressure water pump to spray a high-pressure water jet onto the lidar at a first boosting speed; the first boosting speed is greater than the first indicated speed. The BCM is configured to send a second cleaning command to the MCU; the second cleaning command is a cleaning command sent by the BCM to the MCU after receiving the pressure warning signal. The MCU is configured to trigger the first boost thread according to the second cleaning instruction.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor of the electronic device executes the computer program, it implements the steps of the self-protection and pressure self-regulation method of the high-pressure water pump according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program thereon, characterized in that, When the computer program stored in the readable storage medium is executed by a processor, it implements the steps of the self-protection and pressure self-regulation method for the high-pressure water pump according to any one of claims 1 to 7.

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