Calibration method and device of high-pressure water pump equipment, electronic equipment and storage medium

Abstract

The invention discloses a high-pressure water pump equipment calibration method and device, electronic equipment and a storage medium, and the method comprises the steps: driving a water pump motor to operate, and enabling a waterway valve to output initial water flow; determining working data according to the real-time flow and the real-time water pressure of the initial water flow; the working data comprises the working opening degree of the waterway valve and the working rotating speed of the water pump motor; the working opening degree and the working rotating speed have a reverse characteristic; and drawing a calibration curve of the high-pressure water pump equipment according to the working data corresponding to the multiple initial water flows. Consistency of high-pressure water pump equipment is guaranteed, that is, a stable reverse change relation is presented between the flow output by the water pump and the pressure, that is, when the flow is increased, the pressure is synchronously decreased, when the flow is decreased, the pressure is synchronously increased, and while the cleanliness of automobile laser radar cleaning is guaranteed, the service life of the automobile laser radar is prolonged. And damage to the automobile laser radar is avoided.

Description

Technical Field

[0001] This invention relates to the field of electric motor technology, and particularly to a device for starting electric motors or electromechanical converters, especially to a calibration method, device, electronic equipment, and storage medium for a high-pressure water pump. Background Technology

[0002] Existing automotive water pump motors require functional testing during off-line inspection. This is achieved by flashing pre-compiled software into the motor controller during development. Then, during off-line inspection, voltage, flow, and current measuring devices are connected, and the data from these devices is monitored by setting the motor's operating speed.

[0003] The current method of testing water pump motors before they are put into production is a traditional method. It requires setting a relatively wide judgment range. If the data measured by the pressure and flow monitoring equipment are within the set range, it is considered to meet the product requirements.

[0004] For high-pressure water pump equipment used in automotive LiDAR cleaning, due to the high pressure and high flow rate of the output water, it is necessary to ensure a high degree of consistency in the water pump motor. This means that the output flow rate and pressure of the water pump should exhibit a stable inverse relationship, i.e., the pressure should decrease synchronously when the flow rate increases and increase synchronously when the flow rate decreases. This is to ensure the cleanliness of the automotive LiDAR while avoiding damage to the LiDAR. However, traditional testing methods cannot ensure the consistency of high-pressure water pump equipment, making it difficult to calibrate high-pressure water pump equipment used in automotive LiDAR cleaning using traditional testing methods. Summary of the Invention

[0005] The purpose of this invention is to provide a calibration method, apparatus, electronic device, and storage medium for high-pressure water pump equipment, which solves the problem that traditional testing methods cannot ensure the consistency of high-pressure water pump equipment, making it difficult to calibrate high-pressure water pump equipment for automotive lidar cleaning.

[0006] To achieve the above objectives, the present invention provides a calibration method for a high-pressure water pump device, the high-pressure water pump device including a water pump motor and a water circuit valve, the water pump motor being connected to the water circuit valve, and the water pump motor outputting water flow through the water circuit valve; The calibration method includes: Drive the water pump motor to run, so that the water circuit valve outputs the initial water flow; Based on the real-time flow rate and real-time water pressure of the initial water flow, the working data is determined; the working data includes the working opening degree of the water circuit valve and the working speed of the water pump motor; the working opening degree and the working speed have an inverse relationship. The calibration curve of the high-pressure water pump equipment is plotted based on the working data corresponding to the initial water flow.

[0007] In the above scheme, driving the water pump motor to operate, causing the water circuit valve to output an initial water flow, includes: A speed setting signal is sent to the water pump motor; the speed setting signal is used to instruct the water pump motor to run at an initial speed. After maintaining the preset preparation time for the water pump motor to run, an opening setting signal is sent to the water circuit valve; the opening setting signal is used to instruct the water circuit valve to open at the initial opening, so that the water pump motor outputs the initial water flow through the water circuit valve.

[0008] In the above scheme, the working data is determined based on the real-time flow rate and real-time water pressure of the initial water flow, including: The real-time flow rate of the initial water flow is collected, and the initial opening is adjusted according to the real-time flow rate and the flow range corresponding to the initial opening to obtain the working opening. The real-time pressure of the initial water flow is collected, and the initial speed of the water pump motor is adjusted according to the real-time pressure and the water pressure range corresponding to the initial opening to obtain the working speed. By integrating the working opening degree and the working speed, the working data is obtained; The flow rate range and the water pressure range exhibit opposite characteristics.

[0009] In the above scheme, the real-time flow rate of the initial water flow is collected, and the initial opening is adjusted according to the real-time flow rate and the flow range corresponding to the initial opening to obtain the working opening, including: If it is determined that the real-time traffic is within the traffic range, then the initial opening is taken as the working opening. If it is determined that the real-time flow is higher than the upper limit of the flow range, the initial opening is reduced to obtain the working opening, so that the real-time flow is at the upper flow value; the upper flow value is a value between the midpoint value and the upper limit value of the flow range. If it is determined that the real-time flow is lower than the lower limit of the flow range, the initial opening is increased to obtain the working opening, so that the real-time flow is at the lower flow value; the lower flow value is a value between the midpoint of the flow range and the lower limit.

[0010] In the above scheme, the real-time pressure of the initial water flow is collected, and the initial speed of the water pump motor is adjusted according to the real-time pressure and the water pressure range corresponding to the initial opening to obtain the operating speed, including: If it is determined that the real-time water pressure is within the water pressure range, then the initial speed of the water pump motor is taken as the operating speed; If it is determined that the real-time water pressure is higher than the upper limit of the water pressure range, then the initial speed of the water pump motor is reduced to obtain the operating speed, so that the real-time water pressure is at the upper pressure value; the upper pressure value is a value between the midpoint value and the upper limit value of the water pressure range; If it is determined that the real-time water pressure is lower than the lower limit of the water pressure range, the initial speed of the water pump motor is increased to obtain the operating speed, so that the real-time water pressure is at the lower pressure value; the lower pressure value is a value between the midpoint value and the lower limit value of the water pressure range.

[0011] In the above scheme, the calibration curve of the high-pressure water pump equipment is plotted based on the working data corresponding to multiple initial water flows, including: The water pump motor is operated according to the first working data, and the operating current of the water pump motor under the first working data is collected; wherein, the first working data is one of the working data corresponding to the plurality of initial water flows; If it is determined that the operating current corresponding to multiple operating data does not exceed the preset current threshold, then the operating opening degree and operating speed in the multiple operating data are fitted to obtain the calibration curve; If it is determined that among the operating currents corresponding to multiple operating data, multiple operating currents exceed the current threshold, an abnormal signal is generated.

[0012] In the above scheme, the calibration curve is obtained by fitting the working opening and working speed in multiple working data, including: Data cleaning is performed on multiple sets of work data to obtain multiple clean work data sets; Multiple cleaning work data are entered into a preset mathematical model, and the cleaning work data are fitted using the mathematical model to obtain the calibration curve; The objective formula in the mathematical model is: P=K1⋅n 2 −K2⋅Q 2 / d 2 ; n is the operating speed; d is the working opening degree; Q is the flow rate of water output by the water pump motor through the water circuit valve; P is the water pressure of the water pump motor outputting water through the water circuit valve; K1 and K2 are system coefficients, which are obtained through calibration. K1>0 and K2>0.

[0013] To achieve the above objectives, the present invention also provides a calibration device for a high-pressure water pump, which operates the above-described calibration method; the high-pressure water pump includes a water pump motor and a water circuit valve, the water pump motor is connected to the water circuit valve, and the water pump motor outputs water flow through the water circuit valve; The calibration device includes: The drive module is used to drive the water pump motor to operate, so that the water circuit valve outputs the initial water flow; The processing module is used to determine working data based on the real-time flow rate and real-time water pressure of the initial water flow; the working data includes the working opening degree of the water circuit valve and the working speed of the water pump motor; the working opening degree and the working speed have an inverse relationship. The calculation module is used to draw the calibration curve of the high-pressure water pump equipment based on the working data corresponding to the multiple initial water flows.

[0014] 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 calibration method for the high-pressure water pump described above.

[0015] To achieve the above objectives, the present invention also provides a computer-readable storage medium storing a computer program, wherein the computer program stored in the storage medium, when executed by a processor, implements the steps of the calibration method for the high-pressure water pump equipment described above.

[0016] This invention provides a calibration method, apparatus, electronic device, and storage medium for a high-pressure water pump. By determining the working data based on the real-time flow rate and pressure of the initial water flow, working data showing an inverse relationship between the working opening and the working speed is obtained. A calibration curve is then plotted using multiple working data points, causing the water pump motor and water valves to operate according to the calibration curve. Therefore, different opening degrees of the water valves correspond to different water pump motor speeds, ensuring that each water pressure corresponds to a flow rate with an inverse relationship. This guarantees the consistency between water pressure and flow rate in the high-pressure water pump, preventing situations where the flow rate increases simultaneously with the water pressure, causing damage to the automotive lidar due to the impact of a large flow rate and high pressure, or where the flow rate decreases simultaneously with the water pressure, resulting in insufficient water flow and pressure for cleaning the automotive lidar and substandard cleaning results.

[0017] Therefore, the final calibration curve accurately ensures the consistency of the high-pressure water pump equipment. That is, the flow rate and pressure output by the water pump show a stable inverse relationship. When the flow rate increases, the pressure decreases synchronously, and when the flow rate decreases, the pressure increases synchronously. This achieves the technical effect of ensuring the cleanliness of the car lidar cleaning while avoiding damage to the car lidar. Attached Figure Description

[0018] Figure 1 This is a flowchart of the calibration method for the high-pressure water pump equipment of the present invention; Figure 2 This is a schematic block diagram of the program module of the calibration device for the high-pressure water pump equipment of the present invention; Figure 3 This is a schematic block diagram of the hardware structure of the electronic device in Embodiment 4 of the present invention.

[0019] Figure label: 200: High-pressure water pump equipment; 201: Water pump motor; 202: Water valves; 210: Calibration device; 211: Driver module; 212: Processing module; 213: Calculation module. Detailed Implementation

[0020] 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.

[0021] Example 1: Please refer to Figure 1 This application provides a calibration method for a high-pressure water pump device, the high-pressure water pump device including a water pump motor and a water circuit valve, the water pump motor being connected to the water circuit valve, and the water pump motor outputting water flow through the water circuit valve; The calibration method includes: S101: Drive the water pump motor to run, so that the water circuit valve outputs the initial water flow; S102: Determine working data based on the real-time flow rate and real-time water pressure of the initial water flow; the working data includes the working opening degree of the water circuit valve and the working speed of the water pump motor; the working opening degree and the working speed have an inverse relationship. S103: Draw the calibration curve of the high-pressure water pump equipment based on the working data corresponding to the multiple initial water flows.

[0022] In this example, when cleaning a car's LiDAR, some stubborn stains require the use of high-pressure water jets. However, if the flow rate of the high-pressure water jet is too high, it can damage the LiDAR. Therefore, when cleaning stubborn stains, it is necessary to use high-pressure water jets while strictly limiting the water volume. This ensures that a small flow of water impacts the stains without a larger flow of water impacting the LiDAR itself, thus guaranteeing the safety of the LiDAR.

[0023] Because the area of ​​dirt attached to automotive lidar is relatively large, it is necessary to use a large flow of water to wash it. If the pressure of the large flow of water is too high, it will damage the automotive lidar. Therefore, it is necessary to strictly limit the water pressure of the large flow of water so that the large flow of water will not impact the automotive lidar body when washing away the dirt, thus ensuring the safety of the automotive lidar.

[0024] By determining the working data based on the real-time flow rate and pressure of the initial water flow, working data showing an inverse relationship between the working opening and the working speed is obtained. Calibration curves are then plotted using multiple working data points, causing the water pump motor and water valves to operate according to these curves. Therefore, different opening degrees of the water valves correspond to different water pump motor speeds, ensuring that each water pressure corresponds to a flow rate with an inverse relationship. This guarantees consistency between the water pressure and flow rate of the high-pressure water pump equipment, preventing situations where the flow rate increases simultaneously with the water pressure, causing damage to the automotive lidar due to the impact of a large flow rate and high pressure, or where the flow rate decreases simultaneously with the water pressure, resulting in insufficient water flow and pressure for cleaning the automotive lidar and substandard cleaning results.

[0025] Therefore, the final calibration curve accurately ensures the consistency of the high-pressure water pump equipment. That is, the flow rate and pressure output by the water pump show a stable inverse relationship. When the flow rate increases, the pressure decreases synchronously, and when the flow rate decreases, the pressure increases synchronously. This achieves the technical effect of ensuring the cleanliness of the car lidar cleaning while avoiding damage to the car lidar.

[0026] In this embodiment, the water pump motor is driven by the MOSFET of the water pump motor, which causes the water valve to output the initial water flow. The MOSFET is a metal-oxide-semiconductor field-effect transistor, which is a semiconductor device that controls current based on electric field effect. With its characteristics of high input impedance, fast switching speed and low drive power, it is widely used in power electronics, automotive electronics, consumer electronics, industrial control, renewable energy and other fields.

[0027] In a preferred embodiment, driving the water pump motor to operate, causing the water circuit valve to output an initial water flow, includes: A speed setting signal is sent to the water pump motor; the speed setting signal is used to instruct the water pump motor to run at an initial speed. After maintaining the preset preparation time for the water pump motor to run, an opening setting signal is sent to the water circuit valve; the opening setting signal is used to instruct the water circuit valve to open at the initial opening, so that the water pump motor outputs the initial water flow through the water circuit valve.

[0028] Specifically, a speed setting signal is sent to the water pump motor: Analog input: 0-10V DC or 4-20mA (most common). For example, 0V corresponds to 0Hz (stop), and 10V corresponds to 50Hz (rated speed).

[0029] Digital inputs / buses: PWM signal, RS485 (Modbus RTU), CAN bus (CANopen), or EtherCAT.

[0030] Speed ​​setting signal generation: The "speed setting signal" output by the controller is usually input to the drive unit as a reference value.

[0031] The current loop / speed loop inside the drive unit adjusts the switching duty cycle of the IGBT / MOSFET according to this reference value, and outputs a three-phase electric drive motor with corresponding frequency and voltage.

[0032] Send opening setting signal to the water valve: Analog signal: 4-20mA (valve position feedback is usually also 4-20mA), 0-10V.

[0033] Digital pulse: A pulse train that controls a stepper motor.

[0034] Bus control: The target opening percentage (0%-100%) is also sent via RS485 / CAN bus.

[0035] Actuator: Usually an electric regulating valve (such as a ball valve or butterfly valve) or a proportional solenoid valve.

[0036] The signal indicates the valve's target position (Setpoint), and the valve's built-in controller drives the motor to rotate to that angle.

[0037] For example, during the offline testing of the motor, the calibration bench sends a set speed of 20000 Rpm to the motor. The calibration bench monitors the pressure and flow rate of the water circuit output by the motor and feeds it back to the controller. After the water pump motor starts working for 3 seconds, the opening of the water circuit valve is adjusted to the set flow range. The set speed is usually the rated speed of the motor.

[0038] Adjust the water valve to the first initial opening of 20% and obtain the corresponding initial water flow.

[0039] In a preferred embodiment, the working data is determined based on the real-time flow rate and real-time water pressure of the initial water flow, including: The real-time flow rate of the initial water flow is collected, and the initial opening is adjusted according to the real-time flow rate and the flow range corresponding to the initial opening to obtain the working opening. The real-time pressure of the initial water flow is collected, and the initial speed of the water pump motor is adjusted according to the real-time pressure and the water pressure range corresponding to the initial opening to obtain the working speed. By integrating the working opening degree and the working speed, the working data is obtained; The flow rate range and the water pressure range exhibit opposite characteristics.

[0040] In this example, it is determined whether the initial water flow meets the flow rate that the initial water flow should reach when the motor rotates at 20,000 Rpm. If the corresponding flow rate is reached, the initial opening is taken as the working opening. If the corresponding flow rate is not reached, the initial opening is adjusted to obtain the working opening.

[0041] Similarly, it is determined whether the initial water flow meets the water pressure that the initial water flow should reach at a speed of 20000 Rpm; if the corresponding water pressure is reached, the initial speed of the water pump motor will be adjusted to obtain the working speed.

[0042] The inverse relationship between flow rate range and water pressure range means that there is a negative correlation between them, that is, an inverse relationship where one increases while the other decreases. The larger the midpoint value of the flow rate range, the smaller the midpoint value of the water pressure range.

[0043] In a preferred embodiment, the real-time flow rate of the initial water flow is collected, and the initial opening is adjusted according to the real-time flow rate and the flow range corresponding to the initial opening to obtain the working opening, including: If it is determined that the real-time traffic is within the traffic range, then the initial opening is taken as the working opening. If it is determined that the real-time flow is higher than the upper limit of the flow range, the initial opening is reduced to obtain the working opening, so that the real-time flow is at the upper flow value; the upper flow value is a value between the midpoint value and the upper limit value of the flow range. If it is determined that the real-time flow is lower than the lower limit of the flow range, the initial opening is increased to obtain the working opening, so that the real-time flow is at the lower flow value; the lower flow value is a value between the midpoint of the flow range and the lower limit.

[0044] In this example, if the real-time flow rate is higher than the upper limit of the flow range, it means that the real-time flow rate is too high and the opening of the water valve needs to be reduced. Therefore, the opening of the water valve should be reduced.

[0045] However, reducing the opening of the water valve will increase the pressure of the initial water flow. If the pressure of the initial water flow needs to be reduced later, it is easy to cause the real-time flow rate of the initial water flow to be less than the lower limit, resulting in repeated adjustments of the opening and rotation speed, which leads to low efficiency.

[0046] Therefore, by reducing the initial opening to the point where the real-time flow rate is at the upper flow rate value, sufficient margin is left for subsequent real-time water pressure adjustments, avoiding the need for frequent adjustments to the pump motor speed and the opening of the water circuit valves.

[0047] Conversely, by increasing the initial opening to the lower flow rate value, the need to frequently adjust the pump motor speed and the opening of the water circuit valves is also avoided.

[0048] For example, it is determined whether the real-time flow rate is within the set range of 2.2L / min - 2.4L / min. If the current flow rate is lower than the set range, the opening of the water circuit valve is increased to bring the real-time flow rate to 2.2L / min - 2.3L / min; if the current flow rate is lower than the set range, the opening of the water circuit valve is decreased to bring the real-time flow rate to 2.3L / min - 2.4L / min. This adjustment is repeated until the real-time flow rate meets the range requirement.

[0049] In a preferred embodiment, the real-time pressure of the initial water flow is collected, and the initial speed of the water pump motor is adjusted according to the real-time pressure and the water pressure range corresponding to the initial opening to obtain the operating speed, including: If it is determined that the real-time water pressure is within the water pressure range, then the initial speed of the water pump motor is taken as the operating speed; If it is determined that the real-time water pressure is higher than the upper limit of the water pressure range, then the initial speed of the water pump motor is reduced to obtain the operating speed, so that the real-time water pressure is at the upper pressure value; the upper pressure value is a value between the midpoint value and the upper limit value of the water pressure range; If it is determined that the real-time water pressure is lower than the lower limit of the water pressure range, the initial speed of the water pump motor is increased to obtain the operating speed, so that the real-time water pressure is at the lower pressure value; the lower pressure value is a value between the midpoint value and the lower limit value of the water pressure range.

[0050] In this example, if the real-time pressure is higher than the upper limit of the water pressure range, it indicates that the real-time pressure is too high and the speed of the water pump motor needs to be reduced.

[0051] However, reducing the speed of the water pump motor will also reduce the initial water flow rate. Therefore, based on the above example, reducing the speed of the water pump motor to the point where the real-time water pressure of the initial water flow reaches the upper pressure value greatly reduces the impact of reducing the initial water flow rate. Since the initial water flow is at the upper flow rate value at this time, it ensures that the initial water flow rate after adjusting the speed is still within the flow range to the maximum extent, avoiding the need to frequently adjust the speed of the water pump motor and the opening of the water circuit valves.

[0052] Conversely, by increasing the initial speed of the water pump motor to obtain the operating speed, the real-time water pressure is kept at a lower pressure value, thus avoiding the need for frequent adjustments to the speed of the water pump motor and the opening of the water circuit valves.

[0053] For example, determine whether the real-time pressure is within the set range of 0.75 - 0.85 MPa. If the real-time pressure is lower than the set pressure range, increase the motor speed by 200 rpm until the real-time pressure is within the 0.75 - 0.80 MPa range. If the water pressure is lower than the set pressure range, decrease the motor speed by 200 rpm until the real-time pressure is within the 0.80 - 0.85 MPa range. Repeat the adjustment until the real-time pressure meets the required range.

[0054] In a preferred embodiment, the calibration curve of the high-pressure water pump equipment is plotted based on the operating data corresponding to the plurality of initial water flows, including: The water pump motor is operated according to the first working data, and the operating current of the water pump motor under the first working data is collected; wherein, the first working data is one of the working data corresponding to the plurality of initial water flows; If it is determined that the operating current corresponding to multiple operating data does not exceed the preset current threshold, then the operating opening degree and operating speed in the multiple operating data are fitted to obtain the calibration curve; If it is determined that among the operating currents corresponding to multiple operating data, multiple operating currents exceed the current threshold, an abnormal signal is generated.

[0055] Specifically, the motor status can be automatically determined. After calibrating the rated operating point, the operating current at the adjusted operating point is determined, and the motor output efficiency is determined. The motor operating current at the rated flow and pressure operating points is determined. If the motor exceeds the current limit, the motor status is determined to be abnormal; otherwise, the speed parameters are recorded in the storage area of ​​the controller MCU.

[0056] Establish a mapping relationship between "flow rate and water pressure" and "pump speed + valve opening". This is because the pump flow rate depends not only on the speed but also on the nonlinear effect of valve resistance.

[0057] Suppose we want to control the flow rate Q and water pressure F, we need to find the relationship between the rotational speed n and the opening degree d.

[0058] The collected data sets are: (n1,d1,I1),(n2,d2,I2),...,(nk,dk,Ik). Note: Although the current was not used to fit the curve shape, it verified the validity of the data points.

[0059] Typically, the flow rate Q is directly proportional to the rotational speed n and has a non-linear relationship with the opening degree d (approximately a quadratic curve or power function). The fitting objective might be to find a function f(n,d)=Q.

[0060] Least Squares: If the system is approximately linear, it is used to find the best-fitting line / plane, fit the working data, and obtain the calibration curve.

[0061] Polynomial Fitting: For the nonlinear characteristics of valves, second- or third-order polynomials are used to fit the working data to obtain the calibration curve.

[0062] Look-up Table (LUT): If no complex real-time calculations are performed, the (n,d,Q) relationship is directly stored in memory. At runtime, intermediate values ​​are obtained through bilinear interpolation to generate a control mapping table, which is used to define the mapping relationship between water pressure, water flow, operating opening degree and operating speed, and the control mapping table is used as a calibration curve.

[0063] The final output is a "control mapping table" or "mathematical formula coefficients". For example, when a flow rate of 50 L / min is required, the table shows that the required rotational speed is 2500 RPM and the valve opening is 35%.

[0064] For example, after calibrating the rated operating pressure and flow rate, the motor status is determined. If the motor operating current exceeds the maximum operating current limit of 15A, the motor status is determined to be abnormal. If the motor operating current is lower than the maximum operating current limit of 15A, the speed parameters are recorded in the storage area of ​​the controller MCU.

[0065] It can automatically determine the motor status. After calibrating the rated operating point, it determines the magnitude of the operating current at the adjusted operating point and assesses the motor's output efficiency.

[0066] In a preferred embodiment, the calibration curve is obtained by fitting the operating opening and operating speed from a plurality of operating data, including: Data cleaning is performed on multiple sets of work data to obtain multiple clean work data sets; Multiple cleaning work data are entered into a preset mathematical model, and the cleaning work data are fitted using the mathematical model to obtain the calibration curve; The objective formula in the mathematical model is: P=K1⋅n 2 −K2⋅Q 2 / d 2 ; n is the operating speed; d is the working opening degree; Q is the flow rate of water output by the water pump motor through the water circuit valve; P is the water pressure of the water pump motor outputting water through the water circuit valve; K1 and K2 are system coefficients, which are obtained through calibration. K1>0 and K2>0.

[0067] In this example, we find the partial derivative of the flow rate Q with respect to the formula: ∂P / ∂Q = −2K²⋅Q / d 2 Because K2>0, Q>0, and d2>0, ∂Q / ∂P is always less than 0. Therefore, regardless of changes in rotational speed n and opening degree d, as long as the flow rate Q increases, the water pressure P will inevitably decrease. Thus, in practice, K1 and K2 can be set as needed to achieve precise control of the inverse relationship between flow rate and pressure. For example, for every 10 L / min increase in flow rate, the pressure decreases by 0.5 bar.

[0068] Example 2: Please refer to Figure 2 This application provides a calibration device for a high-pressure water pump, which includes a calibration method. The high-pressure water pump 200 includes a water pump motor 201 and a water circuit valve 202. The water pump motor 201 is connected to the water circuit valve 202, and the water pump motor 201 outputs water flow through the water circuit valve 202. The calibration device 210 includes: a driving module 211, a processing module 212, and a calculation module 213; The drive module 211 is connected to the water pump motor 201 and the water valve 202. The drive module 211 is used to drive the water pump motor 201 to run, so that the water valve 202 outputs an initial water flow. The processing module 212 is connected to the water pump motor 201 and the water valve 202. The processing module 212 is used to determine working data based on the real-time flow rate and real-time water pressure of the initial water flow. The working data includes the working opening degree of the water valve 202 and the working speed of the water pump motor 201. The working opening degree and the working speed have an inverse relationship. The calculation module 213 is connected to the processing module 212, and the processing module 212 is used to draw the calibration curve of the high-pressure water pump device 200 based on the working data corresponding to the multiple initial water flows.

[0069] Optionally, the drive module 211 is configured as follows: A speed setting signal is sent to the water pump motor 201; the speed setting signal is used to instruct the water pump motor 201 to run at an initial speed. After maintaining the water pump motor 201 for a preset preparation time, an opening setting signal is sent to the water circuit valve 202; the opening setting signal is used to instruct the water circuit valve 202 to open at the initial opening, so that the water pump motor 201 outputs the initial water flow through the water circuit valve 202.

[0070] Optionally, the processing module 212 is configured as follows: The real-time flow rate of the initial water flow is collected, and the initial opening is adjusted according to the real-time flow rate and the flow range corresponding to the initial opening to obtain the working opening. The real-time pressure of the initial water flow is collected, and the initial speed of the water pump motor 201 is adjusted according to the real-time pressure and the water pressure range corresponding to the initial opening to obtain the working speed. By integrating the working opening degree and the working speed, the working data is obtained; The flow rate range and the water pressure range exhibit opposite characteristics.

[0071] The processing module 212 is further configured to: If it is determined that the real-time traffic is within the traffic range, then the initial opening is taken as the working opening. If it is determined that the real-time flow is higher than the upper limit of the flow range, the initial opening is reduced to obtain the working opening, so that the real-time flow is at the upper flow value; the upper flow value is a value between the midpoint value and the upper limit value of the flow range. If it is determined that the real-time flow is lower than the lower limit of the flow range, the initial opening is increased to obtain the working opening, so that the real-time flow is at the lower flow value; the lower flow value is a value between the midpoint of the flow range and the lower limit.

[0072] The processing module 212 is further configured to: If it is determined that the real-time water pressure is within the water pressure range, then the initial speed of the water pump motor 201 is taken as the operating speed; If it is determined that the real-time water pressure is higher than the upper limit of the water pressure range, the initial speed of the water pump motor 201 is reduced to obtain the working speed, so that the real-time water pressure is at the upper pressure value; the upper pressure value is a value between the midpoint value and the upper limit value of the water pressure range; If it is determined that the real-time water pressure is lower than the lower limit of the water pressure range, the initial speed of the water pump motor 201 is increased to obtain the operating speed, so that the real-time water pressure is at the lower pressure value; the lower pressure value is a value between the midpoint value and the lower limit value of the water pressure range.

[0073] Optionally, the arithmetic module 213 is configured as follows: The water pump motor 201 is operated according to the first working data, and the operating current of the water pump motor 201 under the first working data is collected; wherein, the first working data is one of the working data corresponding to the plurality of initial water flows; If it is determined that the operating current corresponding to multiple operating data does not exceed the preset current threshold, then the operating opening degree and operating speed in the multiple operating data are fitted to obtain the calibration curve; If it is determined that among the operating currents corresponding to multiple operating data, multiple operating currents exceed the current threshold, an abnormal signal is generated.

[0074] Optionally, the arithmetic module 213 is further configured as follows: Data cleaning is performed on multiple sets of work data to obtain multiple clean work data sets; Multiple cleaning work data are entered into a preset mathematical model, and the cleaning work data are fitted using the mathematical model to obtain the calibration curve; The objective formula in the mathematical model is: P=K1⋅n 2 −K2⋅Q 2 / d2 ; n is the operating speed; d is the working opening degree; Q is the flow rate of water output by the water pump motor 201 through the water valve 202; P is the water pressure at which the water pump motor 201 outputs water through the water valve 202; K1 and K2 are system coefficients, which are obtained through calibration. K1>0 and K2>0.

[0075] Example 3: To achieve the above objectives, the present invention also provides an electronic device 3. The components of the calibration device for the high-pressure water pump equipment in Example 3 can be distributed across different electronic devices. The electronic device 3 can be a smartphone, tablet computer, laptop computer, desktop computer, rack server, blade server, tower server, or cabinet server (including independent servers or server clusters composed of multiple application servers), etc. The electronic device in this embodiment includes, but is not limited to, a memory 31 and a processor 32 that can communicate with each other via a system bus. Figure 3 As shown. It should be noted that, Figure 3 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.

[0076] In this embodiment, the memory 31 (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 31 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 31 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 31 can also include both internal storage units and external storage devices of the electronic device. In this embodiment, the memory 31 is typically used to store the operating system and various application software installed on the electronic device, such as the program code of the calibration device of the high-pressure water pump equipment in Embodiment 3. In addition, the memory 31 can also be used to temporarily store various types of data that have been output or will be output.

[0077] In some embodiments, processor 32 may be a central processing unit (CPU), controller, microcontroller, microprocessor, or other data processing chip. This processor 32 is typically used to control the overall operation of the electronic device. In this embodiment, processor 32 is used to run program code stored in memory 31 or process data, for example, to run the calibration device of a high-pressure water pump to implement the calibration method of the high-pressure water pump in Embodiment 1.

[0078] 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 32, it implements the corresponding function. In this embodiment, the computer-readable storage medium is used to store a computer program that implements the calibration method of the high-pressure water pump equipment. When executed by processor 32, it implements the calibration method of the high-pressure water pump equipment of Example 1.

[0079] 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.

[0080] 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.

[0081] 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 calibration method for a high-pressure water pump, characterized in that, The high-pressure water pump equipment includes a water pump motor and a water circuit valve. The water pump motor is connected to the water circuit valve, and the water pump motor outputs water flow through the water circuit valve. The calibration method includes: Drive the water pump motor to run, so that the water circuit valve outputs the initial water flow; Based on the real-time flow rate and real-time water pressure of the initial water flow, the working data is determined; the working data includes the working opening degree of the water circuit valve and the working speed of the water pump motor; the working opening degree and the working speed have an inverse relationship. The calibration curve of the high-pressure water pump equipment is plotted based on the working data corresponding to the initial water flow.

2. The calibration method according to claim 1, characterized in that, Driving the water pump motor to operate, causing the water circuit valve to output an initial water flow, includes: A speed setting signal is sent to the water pump motor; the speed setting signal is used to instruct the water pump motor to run at an initial speed. After maintaining the preset preparation time for the water pump motor to run, an opening setting signal is sent to the water circuit valve; the opening setting signal is used to instruct the water circuit valve to open at the initial opening, so that the water pump motor outputs the initial water flow through the water circuit valve.

3. The calibration method according to claim 2, characterized in that, Based on the real-time flow rate and real-time water pressure of the initial water flow, the working data is determined, including: The real-time flow rate of the initial water flow is collected, and the initial opening is adjusted according to the real-time flow rate and the flow range corresponding to the initial opening to obtain the working opening. The real-time pressure of the initial water flow is collected, and the initial speed of the water pump motor is adjusted according to the real-time pressure and the water pressure range corresponding to the initial opening to obtain the working speed. By integrating the working opening degree and the working speed, the working data is obtained; The flow rate range and the water pressure range exhibit opposite characteristics.

4. The calibration method according to claim 3, characterized in that, The process involves collecting the real-time flow rate of the initial water flow, adjusting the initial opening based on the real-time flow rate and the flow range corresponding to the initial opening, to obtain the operating opening, including: If it is determined that the real-time traffic is within the traffic range, then the initial opening is taken as the working opening. If it is determined that the real-time flow is higher than the upper limit of the flow range, the initial opening is reduced to obtain the working opening, so that the real-time flow is at the upper flow value; the upper flow value is a value between the midpoint value and the upper limit value of the flow range. If it is determined that the real-time flow is lower than the lower limit of the flow range, the initial opening is increased to obtain the working opening, so that the real-time flow is at the lower flow value; the lower flow value is a value between the midpoint of the flow range and the lower limit.

5. The calibration method according to claim 3, characterized in that, The real-time pressure of the initial water flow is collected, and the initial speed of the water pump motor is adjusted according to the real-time pressure and the water pressure range corresponding to the initial opening to obtain the operating speed, including: If it is determined that the real-time water pressure is within the water pressure range, then the initial speed of the water pump motor is taken as the operating speed; If it is determined that the real-time water pressure is higher than the upper limit of the water pressure range, then the initial speed of the water pump motor is reduced to obtain the operating speed, so that the real-time water pressure is at the upper pressure value; the upper pressure value is a value between the midpoint value and the upper limit value of the water pressure range; If it is determined that the real-time water pressure is lower than the lower limit of the water pressure range, the initial speed of the water pump motor is increased to obtain the operating speed, so that the real-time water pressure is at the lower pressure value; the lower pressure value is a value between the midpoint value and the lower limit value of the water pressure range.

6. The calibration method according to claim 1, characterized in that, The calibration curve of the high-pressure water pump equipment is plotted based on the working data corresponding to multiple initial water flows, including: The water pump motor is operated according to the first working data, and the operating current of the water pump motor under the first working data is collected; wherein, the first working data is one of the working data corresponding to the plurality of initial water flows; If it is determined that the operating current corresponding to multiple operating data does not exceed the preset current threshold, then the operating opening degree and operating speed in the multiple operating data are fitted to obtain the calibration curve; If it is determined that among the operating currents corresponding to multiple operating data, multiple operating currents exceed the current threshold, an abnormal signal is generated.

7. The calibration method according to claim 6, characterized in that, The calibration curve is obtained by fitting the operating opening and operating speed from multiple operating data points, including: Data cleaning is performed on multiple sets of work data to obtain multiple clean work data sets; Multiple cleaning work data are entered into a preset mathematical model, and the cleaning work data are fitted using the mathematical model to obtain the calibration curve; The objective formula in the mathematical model is: P=K1⋅n 2 −K2⋅Q 2 / d 2 ; n is the operating speed; d is the working opening degree; Q is the flow rate of water output by the water pump motor through the water circuit valve; P is the water pressure of the water pump motor outputting water through the water circuit valve; K1 and K2 are system coefficients, which are obtained through calibration. K1>0 and K2>0.

8. A calibration device for a high-pressure water pump, characterized in that, The calibration method according to any one of claims 1-7 is used; the high-pressure water pump equipment includes a water pump motor and a water circuit valve, the water pump motor is connected to the water circuit valve, and the water pump motor outputs water flow through the water circuit valve; The calibration device includes: The drive module is used to drive the water pump motor to operate, so that the water circuit valve outputs the initial water flow; The processing module is used to determine working data based on the real-time flow rate and real-time water pressure of the initial water flow; the working data includes the working opening degree of the water circuit valve and the working speed of the water pump motor; the working opening degree and the working speed have an inverse relationship. The calculation module is used to draw the calibration curve of the high-pressure water pump equipment based on the working data corresponding to the multiple initial water flows.

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 calibration method for the high-pressure water pump device 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 calibration method for the high-pressure water pump equipment according to any one of claims 1 to 7.

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