Vehicle-mounted electric drive cleaning system, control method thereof and engineering vehicle

Abstract

The embodiment of the invention provides a vehicle-mounted electric drive cleaning system, a control method thereof and an engineering vehicle, and relates to the technical field of electric drive control. The method comprises the steps of obtaining a set value of cleaning water pressure of a cleaning system; determining a plurality of water pressure control values of a certain control point in the water supply pipeline according to the set value; according to the relation between the water outlet flow of the control point of the cleaning system and a flow threshold value, a water pressure range is determined based on the multiple water pressure control values; according to the relation between the current water pressure of the control point and the determined water pressure range, an adjusting instruction for the water pressure adjusting equipment is generated. The implementation mode provided by the invention has the advantages of automatically generating the adjusting threshold value and realizing automatic control of the electric drive system.

Description

Technical Field

[0001] The present application relates to the field of electric drive control technology, and specifically to a vehicle-mounted electric drive cleaning system, a control method for a vehicle-mounted electric drive cleaning system, and an engineering vehicle. Background Art

[0002] The cleaning system of a traditional fuel-powered concrete pump truck is powered by a diesel engine-driven hydraulic motor. A relief valve regulates the water supply pressure and allows for pressure relief and backflow when the high-pressure water gun is shut off. With the development of electrified and green construction machinery, mild hybrid electric and pure electric powertrains have been introduced to the market. Traditional cleaning system structures and drive methods are no longer sufficient to meet energy-saving and consumption-reduction needs.

[0003] For example, some existing water pump control methods use a diesel engine to drive a hydraulic motor to power the cleaning water pump, with a relief valve regulating the water outlet pressure and enabling pressure relief and backflow when the high-pressure water gun is turned off. These methods have drawbacks such as requiring an overflow device and a pressure gauge, maintaining energy waste by keeping the engine and water pump running even when the water gun is turned off, and causing excess engine output power when performing cleaning operations alone.

[0004] For example, there are some intelligent and efficient water pump control systems in the prior art, which use the perception data obtained by flow sensors and water pressure sensors to control the switching of the motor after analysis. However, they do not disclose the method for determining each water pressure threshold, which hinders the implementation of the control method. Summary of the Invention

[0005] The purpose of the embodiments of the present application is to provide a vehicle-mounted electric drive cleaning system and its control method, and an engineering vehicle, which realizes automatic determination of the water pressure control threshold based on the set value, so as to at least solve some of the problems in the background technology.

[0006] In order to achieve the above-mentioned purpose, the present application provides a control method for an on-vehicle electric drive cleaning system, which includes: obtaining a setting value of the cleaning water pressure of the cleaning system; determining multiple water pressure control values ​​of a control point in the water supply pipeline according to the setting value; determining a water pressure range based on the multiple water pressure control values ​​according to the relationship between the water outlet flow rate and the flow threshold of the control point of the cleaning system; and generating an adjustment instruction for the water pressure regulating device according to the relationship between the current water pressure of the control point and the determined water pressure range.

[0007] Optionally, obtaining the setting value of the cleaning water pressure of the cleaning system includes: obtaining the system default value of the cleaning water pressure of the cleaning system; obtaining the setting value of the cleaning water pressure input through the control interface of the cleaning system; or obtaining the setting value of the cleaning water pressure input by an external device that has a signal coupling relationship with the cleaning system.

[0008] Optionally, the certain control point is the water pump outlet of the cleaning system; multiple water pressure control values ​​of a certain control point in the water supply pipeline are determined according to the set value, including: obtaining a first water pressure control value according to the set value and the first water pressure margin, or obtaining a first water pressure control value according to the set value and the first margin ratio; obtaining a second water pressure control value according to the set value and the second water pressure margin, or obtaining a second water pressure control value according to the set value and the second margin ratio; obtaining a third water pressure control value according to the set value and the third water pressure margin, or obtaining a third water pressure control value according to the set value and the third margin ratio; wherein, the first water pressure margin and the second water pressure margin are opposite in sign, and the third water pressure margin is greater than the positive value of the first water pressure margin and the second water pressure margin; the first margin ratio and the second margin ratio are opposite in sign, and the third margin ratio is greater than the positive value of the first margin ratio and the second margin ratio.

[0009] Optionally, according to the relationship between the water outlet flow rate of the control point of the cleaning system and the flow threshold, the water pressure range is determined based on the multiple water pressure control values, including: when the water outlet flow rate of the control point of the cleaning system is less than the flow threshold, obtaining a first water pressure range according to the water pressure starting value of the cleaning system and the third water pressure control value; when the water outlet flow rate of the control point of the cleaning system is greater than the flow threshold, obtaining a second water pressure range according to the first water pressure control value and the second water pressure control value.

[0010] Optionally, based on the relationship between the current water pressure of the control point and the determined water pressure range, an adjustment instruction for the water pressure regulating device is generated, including: when the determined water pressure range is the first water pressure range and the current water pressure is within the first water pressure range, generating a power increase instruction for the water pressure regulating device; when the determined water pressure range is the first water pressure range and the current water pressure is outside the first water pressure range, generating a pause operation instruction for the water pressure regulating device; when the determined water pressure range is the second water pressure range and the current water pressure is lower than the lower limit of the second water pressure range, generating a power increase instruction for the water pressure regulating device; when the determined water pressure range is the second water pressure range and the current water pressure is higher than the upper limit of the second water pressure range, generating a power reduction instruction for the water pressure regulating device.

[0011] Optionally, before obtaining the set value of the cleaning water pressure of the cleaning system, the method further includes monitoring the opening state of the cleaning system, and when the opening state is on, executing subsequent steps.

[0012] This application also provides a vehicle-mounted electric-driven cleaning system, including a water pressure regulating device, a water outlet and a water supply pipeline therebetween. The water pressure regulating device includes a water pump and a motor that provides power to the water pump. It also includes: a water outlet pressure sensor and a control module for controlling the water pressure regulating device. The control module is configured to execute the aforementioned control method of the vehicle-mounted electric-driven cleaning system.

[0013] Optionally, the on state of the cleaning system is determined by the on state of the cleaning switch; and the relationship between the water outlet flow rate of the control point and the flow threshold is determined by the on state of the water outlet.

[0014] Optionally, the water gun device where the water outlet is located is provided with a water pressure regulating component and a communication component, and the communication component sends the setting value of the cleaning water pressure mapped by the current state of the water pressure regulating component to the control module.

[0015] The present application also provides an engineering vehicle, comprising: the engineering vehicle includes the aforementioned on-board electric drive cleaning system or the controller of the engineering vehicle is configured to execute the aforementioned control method of the on-board electric drive cleaning system.

[0016] This application also provides an electronic device, comprising: at least one processor; a memory connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the at least one processor implements the aforementioned control method of the vehicle-mounted electric drive cleaning system by executing the instructions stored in the memory.

[0017] The present application also provides a machine-readable storage medium on which instructions are stored. When the instructions are executed by a processor, the processor is configured to execute the control method for implementing the aforementioned vehicle-mounted electric drive cleaning system.

[0018] The present application also provides a computer program product, comprising a computer program, which implements the aforementioned control method of the vehicle-mounted electric drive washing system when executed by a processor.

[0019] The above technical solution has the following beneficial effects: (1) The water pump is driven by an electric motor and uses electricity as energy, which adapts to the trend of green and electrified engineering vehicles.

[0020] (2) The constant pressure adjustment range is automatically allocated based on the set value of the cleaning water pressure, replacing the manual adjustment of the overflow valve opening of the original technology.

[0021] (3) The control logic in the control method realizes the automatic start and stop control of the electric drive system. Compared with the continuous operation under the original technology, the standby function can save unnecessary energy consumption and reduce the risk of overheating of the motor under continuous overflow operation load.

[0022] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present application but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings: Figure 1 The following schematically shows the steps of a method for controlling a vehicle-mounted electric drive cleaning system according to an embodiment of the present application; Figure 2 The following schematically shows the implementation process of the control method of the vehicle-mounted electric drive cleaning system according to the embodiment of the present application; Figure 3 The following schematically shows a structural diagram of a control device for a vehicle-mounted electric drive cleaning system according to an embodiment of the present application; Figure 4 The internal structure of an electronic device according to an embodiment of the present application is schematically shown. DETAILED DESCRIPTION

[0024] The following describes the specific implementation of the embodiment of the present application in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present application and is not intended to limit the embodiment of the present application.

[0025] Figure 1 The following schematically shows the steps of the control method of the vehicle-mounted electric drive cleaning system according to the embodiment of the present application. Figure 1 As shown, a control method for a vehicle-mounted electric drive cleaning system includes: S01. Obtaining a set value of the cleaning water pressure of the cleaning system; S02, determining multiple water pressure control values ​​of a certain control point in the water supply pipeline according to the set value; S03, determining a water pressure range based on the multiple water pressure control values ​​according to a relationship between the water flow rate of the control point of the cleaning system and a flow threshold; S04. Generate an adjustment instruction for the water pressure regulating device according to the relationship between the current water pressure of the control point and the determined water pressure range.

[0026] The above implementation automatically sets various water pressure control values ​​based on set values, replacing the manual adjustment of the relief valve opening in the previous technology. This provides the advantage of automatic control. It also enables automatic start and stop control of the electric drive system. Compared to the continuous operation of the previous technology, the standby function saves unnecessary energy and reduces the risk of motor overheating under continuous overflow load.

[0027] In some embodiments, obtaining the set value of the washing water pressure of the washing system in step S01 includes: obtaining the system default value of the washing water pressure of the washing system; the system default value here can be the system default value of the washing system when it leaves the factory, the washing water pressure value used by the last user stored in the washing system, or an appropriate value obtained based on technologies such as big data analysis. Obtaining the set value of the washing water pressure input through the control interface of the washing system includes: the user filling in the corresponding required value in the corresponding setting interface on the vehicle control operation screen, and the user inputting the required value through other input devices. Obtaining the set value of the washing water pressure input by an external device that has a signal coupling relationship with the washing system includes: the set value of the washing water pressure input on other external devices outside the whole device, and the external device here includes a remote control, a water gun with a numerical input function or a numerical adjustment function, or a control component with a numerical input function or a numerical adjustment function linked to the water gun.

[0028] In step S02, the aforementioned control point can be set at any position in the water supply pipeline, for example, at the outlet of the water pump, at the outlet of the water gun, at the connection between the water gun inlet and the water supply pipeline, etc. In some embodiments of the present application, the control point is the water outlet of the water pump of the cleaning system, and water pressure control at this point can achieve the accuracy of the output water pressure. Multiple water pressure control values ​​of a control point in the water supply pipeline are determined according to the set value, including: obtaining a first water pressure control value according to the set value and a first water pressure margin, or obtaining the first water pressure control value according to the set value and a first margin ratio; obtaining a second water pressure control value according to the set value and a second water pressure margin, or obtaining the second water pressure control value according to the set value and a second margin ratio; obtaining a third water pressure control value according to the set value and a third water pressure margin, or obtaining the third water pressure control value according to the set value and a third margin ratio; wherein, the first water pressure margin and the second water pressure margin are opposite in sign, and the third water pressure margin is greater than the positive value of the first water pressure margin and the second water pressure margin; the first margin ratio and the second margin ratio are opposite in sign, and the third margin ratio is greater than the positive value of the first margin ratio and the second margin ratio. In this embodiment, the water pressure thresholds can be automatically calculated based on the water pressure margin. For example, if the current wash water pressure setting value is 8 MPa, the system automatically assigns the water pressure thresholds according to the fluctuation ranges of the first water pressure margin of 0.5 MPa, the second water pressure margin of -0.5 MPa, and the third water pressure margin of 1.0 MPa as follows: the first water pressure control value is (8 + 0.5) MPa, the second water pressure control value is (8 - 0.5) MPa, and the third water pressure control value is (8 + 1.0) MPa. In other optional embodiments, the water pressure thresholds can also be automatically calculated based on the margin ratio. For example, if the current wash water pressure setting value is 8 MPa, the system automatically assigns the water pressure thresholds according to the fluctuation ranges of the first margin ratio + 5%, the second margin ratio - 5%, and the third margin ratio + 10% as follows: the first water pressure control value is (8 + 0.4) MPa, the second water pressure control value is (8 - 0.4) MPa, and the third water pressure control value is (8 + 0.8) MPa. Through the above implementation, the automatic allocation or automatic determination of various water pressure control values ​​is achieved, replacing the manual adjustment of the overflow valve opening in the original technology. The water pressure margin and margin ratio can be determined based on the operating parameters of the water pump and the water gun. However, it should be noted that when using a water pressure margin, the first water pressure margin and the second water pressure margin are opposite in sign, and the third water pressure margin is greater than the positive value of the first or second water pressure margin. When using a margin ratio, the first margin ratio and the second margin ratio are opposite in sign, and the third margin ratio is greater than the positive value of the first or second margin ratio.

[0029] In some embodiments of the present application, a water pressure range is determined based on the multiple water pressure control values ​​according to the relationship between the water flow rate at the control point of the cleaning system and the flow threshold, including: when the water flow rate at the control point of the cleaning system is less than the flow threshold, a first water pressure range is obtained based on the water pressure starting value of the cleaning system and the third water pressure control value; when the water flow rate at the control point of the cleaning system is greater than the flow threshold, a second water pressure range is obtained based on the first water pressure control value and the second water pressure control value. The water flow rate in this embodiment can be obtained by a flow sensor, and then the relationship between the water flow rate and the flow threshold is obtained after comparison and judgment by the control module. For example, when the user turns on the cleaning system switch, the system is powered on and the relevant control functions in the vehicle control module are activated at the same time. At this time, the water pressure of the cleaning system is the water pressure starting value, which is usually 0. At this time, the high-pressure water gun has not yet been turned on. When the current flow rate is less than 2L / min, the 2L / min is the system value, which can be set by the vehicle manufacturer according to needs. At this point, judgment and control should be based on the first water pressure range, which is (0, third water pressure control value). If the data from the previous embodiment is used, it would be (0, 9.0 MPa) or (0, 8.8 MPa). When the user turns on the high-pressure water gun, the pressure in the water pipe connected to the water outlet drops and the current flow rate is monitored to be ≥ 2 L / min. Here, 2 L / min is the flow rate threshold, which can be set according to needs. The system then determines that it is in operation and should use the second water pressure range, i.e., (second water pressure control value, first water pressure control value). The opening and closing of this range can be adaptively adjusted, and the example of the opening range here is not limiting. The control module then adjusts the water pressure regulating device based on the second water pressure range. For example, it can adjust the pressure according to whether it is below the lower limit of the water pressure range, within the water pressure range, or above the upper limit of the water pressure range. Through this embodiment, a water pressure range is automatically generated based on the water flow rate and the flow rate threshold, and the corresponding water pressure range is automatically matched based on the water flow rate, thereby improving the system's automated control level.

[0030] In some embodiments of the present application, an adjustment instruction for the water pressure regulating device is generated based on the relationship between the current water pressure of the control point and the determined water pressure range. In some common embodiments, the adjustment instruction is mainly for the motor connected to the water pump. There is a corresponding relationship between the speed of the motor and the output pressure of the water pump. Therefore, the cleaning water pressure is controlled by adjusting the speed of the motor. This embodiment realizes the automatic start and stop control of the electric drive system. Compared with the continuous operation under the original technology, the standby function can save unnecessary energy consumption and reduce the risk of overheating of the motor under continuous overflow operation load. The adjustment specifically includes: when the determined water pressure range is the first water pressure range and the current water pressure is within the first water pressure range, a power increase instruction is generated for the water pressure regulating device; when the cleaning system starts, the water pressure usually starts to rise from 0. At this time, the motor is controlled to start running at the default safety speed, and the motor output power is increased to increase the water pressure. At this time, the cleaning system can also be considered to be in standby mode. When the determined water pressure range is the first water pressure range, and the current water pressure is outside the first water pressure range, a pause instruction is generated for the water pressure regulating device; in some scenarios, the first water pressure range is an open interval at the third water pressure control value. When the water pressure reaches the third water pressure control value, it can be considered that the current water pressure is outside the first water pressure range. Similarly, in this standby mode, when the pressure at the water outlet rises to the third water pressure control value, the control module controls the electric drive system to standby, and the motor stops running. For example, when the current flow rate is less than 2L / min, the 2L / min is the system value. The vehicle manufacturer can set it according to demand and determine it as a standby state, that is, the high-pressure water gun is not turned on, then the electric drive system is controlled to continue to increase power, so that the water outlet pressure increases until it reaches the standby threshold of 8.8 or 9.0MPa, triggering the standby instruction. The vehicle control module controls the electric drive system to standby and the motor stops running. When the determined water pressure range is the second water pressure range, and the current water pressure is lower than the lower limit of the second water pressure range, a power increase instruction is generated for the water pressure regulating device; when the determined water pressure range is the second water pressure range, and the current water pressure is higher than the upper limit of the second water pressure range, a power reduction instruction is generated for the water pressure regulating device. When the determined water pressure range is the second water pressure range, it can be considered that the cleaning system switches from the aforementioned standby state to the operation control cycle, and by increasing or decreasing the motor output power, the outlet water pressure is stably maintained within the constant pressure regulation range, that is, when the pressure is ≤7.6 or 7.5MPa, the boost regulation is turned on, and the motor output power is increased until the pressure reaches 8.0MPa; when the pressure is ≥8.4 or 8.5MPa, the buck regulation is turned on, and the motor output power is reduced until the pressure reaches 8.0MPa, and the regulation is repeated in this way. This embodiment can maintain a stable outlet water pressure through pressure feedback and automatic adjustment.

[0031] In some embodiments of the present application, before obtaining the set value of the washing water pressure of the washing system, the method further includes monitoring the on state of the washing system, and when the on state is on, executing subsequent steps. The control method of the present application is executed after the system is powered on. The washing system is provided with a main switch to control its power-on state. When turned on, the system is powered on and the control method of the present application is executed. When turned off, the system is powered off. Because the washing system in some engineering vehicles is independent of the entire system, it is necessary to separately monitor the on state of the washing system to avoid continuous standby for water pressure monitoring and water pressure regulation.

[0032] Based on the same inventive concept, the present application also provides an on-board electric drive cleaning system, including a water pressure regulating device, a water outlet and a water supply pipeline therebetween, the water pressure regulating device including a water pump and a motor providing power to the water pump, and also including: a water outlet pressure sensor and a control module for controlling the water pressure regulating device, the control module being configured to execute the aforementioned control method of the on-board electric drive cleaning system. The on-board electric drive cleaning system of this embodiment is mainly composed of the following parts: a control module, such as a vehicle control module, which can be a newly added PLC hardware or a newly added function on an existing PLC; an execution module, including: a motor, a water pump, a high-pressure water gun, a water outlet pressure sensor (optional), a water outlet flow sensor; accessories, including: a vehicle control operation screen, a high-pressure water pipe. The main features of the on-board electric drive cleaning system are: after setting the water supply pressure value required for the current cleaning operation, the system can automatically allocate water pressure thresholds, and realize constant pressure regulation and standby based on each water pressure threshold.

[0033] In some embodiments of the present application, the on-state of the cleaning system is determined by the on-state of the cleaning switch; the relationship between the water flow rate at a control point and the flow threshold is determined by the on-state of the water outlet. This embodiment provides a technical solution based on the linkage of the cleaning switch and the water outlet control switch. The water gun outlet and the water pump outlet are connected to each other in the same water supply pipeline. The water outlet here can be either the water gun outlet or the water pump outlet. The water gun's water outlet control switch is directly controlled by the user. Therefore, the water outlet status can be determined by monitoring the status of the water outlet control switch, and the water flow rate is assumed to be above the flow threshold during water outlet. When the water outlet control switch is on, the water outlet is considered to be on, confirming that the water flow rate is greater than the flow threshold; when the water outlet control switch is off, the water outlet is considered to be closed, confirming that the water flow rate is less than the flow threshold. This embodiment avoids the need for a flow sensor and the determination of control conditions. Instead, the operating and standby states of the cleaning system are directly determined based on the on-state of the water outlet, simplifying the overall system structure. For example, if the user needs to temporarily leave during operation and turns off the water gun switch, the cleaning system's cleaning switch is in the open state and the water outlet is closed. The control device automatically determines that the system is in standby mode and stops the electric drive system, achieving energy conservation. When the user turns off the cleaning system, the cleaning switch is in the closed state, and the entire vehicle exits the aforementioned control method and stops monitoring the set value and water pressure value.

[0034] In some embodiments of the present application, the water gun device where the water outlet is located is provided with a water pressure regulating component and a communication component, and the communication component sends the setting value of the washing water pressure mapped by the current state of the water pressure regulating component to the control module. Taking the water pressure regulating component as an adjustment knob as an example, the adjustment knob is set on the handle of the water gun device. The user can adjust the washing pressure in real time by rotating the adjustment knob during the washing operation, that is, it is used to determine the setting value of the washing water pressure. The state value of the adjustment knob or the setting value of the washing water pressure is sent to the control module via a communication component, such as a Bluetooth communication module, and the control module thereby obtains the setting value of the washing water pressure or obtains the setting value of the washing water pressure through mapping. This embodiment provides a method for adjusting the setting value on the water gun device, realizing simple and quick water pressure setting. Remote adjustment of the washing pressure is realized, and the user can conveniently adjust the washing pressure according to actual needs during operation.

[0035] Some embodiments of this application also provide real-time monitoring of cleaning pressure and flow. In this embodiment, pressure and flow sensors at the water outlet monitor pressure and flow in real time and transmit these values ​​back to the vehicle control module. Simultaneously, the vehicle control module is connected to the vehicle control screen, displaying these values ​​on the corresponding interface for the user to view at any time. With this embodiment, the current water pump supply pressure value can be set and viewed in real time on the display screen of the vehicle control unit.

[0036] The above implementation replaces the conventional technology's overflow valve opening adjustment control with pressure feedback control. Furthermore, the control logic within the control module enables automatic start and stop control of the electric drive system. Compared to the conventional technology's continuous operation, the standby function saves unnecessary energy and reduces the risk of motor overheating under continuous overflow load.

[0037] Figure 2 The following schematically shows the implementation process of the control method of the vehicle-mounted electric drive cleaning system according to the embodiment of the present application. Figure 2 As shown, the working principle and steps of an embodiment of the present application are as follows: (1) Check the current cleaning water pressure setting value through the system interface and set the water supply pressure value X required by the current operation. The system automatically allocates the constant pressure adjustment range (X±Y) and the standby threshold Z. The standby threshold Z is greater than the upper limit of the constant pressure adjustment range (X+Y); (2) When the cleaning switch is turned on, the system is powered on. At this time, because the water gun is not turned on and the water outlet flow is less than the judgment value, the system determines it as a standby cycle. The motor starts and runs until the water outlet pressure rises to the standby threshold Z. The system automatically enters the standby state and the motor stops running. (3) When the operator turns on the cleaning water gun, the water outlet flow rate ≥ the judgment value, the system determines it as an operation cycle, the system automatically enters the working state, and the motor starts to run; (4) When the outlet pressure fluctuates, the control system increases or decreases the motor output power to keep the outlet pressure stable within the range of (X±Y); (5) When the operator turns off the cleaning water gun, the water outlet flow rate is less than the judgment value, and the system determines it as a standby cycle. The motor continues to run until the water outlet pressure reaches the standby threshold Z, the system automatically returns to the standby state, and the motor stops running; (6) When the cleaning switch is turned off, the system is powered off.

[0038] Based on the same inventive concept, the present application also provides a control device for a vehicle-mounted electric drive cleaning system. Figure 3 The schematic diagram shows the structure of the control device of the vehicle electric drive cleaning system according to the embodiment of the present application. Figure 3 As shown, the device includes: a setting value acquisition module for acquiring the setting value of the cleaning water pressure of the cleaning system; a control value generation module for determining multiple water pressure control values ​​of a control point in the water supply pipeline according to the setting value; a threshold determination module for determining the water pressure range based on the multiple water pressure control values ​​according to the relationship between the water outlet flow rate and the flow threshold of the control point of the cleaning system; and an instruction generation module for generating an adjustment instruction for the water pressure regulating device according to the relationship between the current water pressure of the control point and the determined water pressure range.

[0039] In some optional embodiments of the present application, obtaining the setting value of the cleaning water pressure of the cleaning system includes: obtaining the system default value of the cleaning water pressure of the cleaning system; obtaining the setting value of the cleaning water pressure input through the control interface of the cleaning system; or obtaining the setting value of the cleaning water pressure input by an external device that has a signal coupling relationship with the cleaning system.

[0040] In some optional embodiments of the present application, the certain control point is the water pump outlet of the cleaning system; multiple water pressure control values ​​of a certain control point in the water supply pipeline are determined according to the set value, including: obtaining a first water pressure control value according to the set value and the first water pressure margin, or obtaining a first water pressure control value according to the set value and the first margin ratio; obtaining a second water pressure control value according to the set value and the second water pressure margin, or obtaining a second water pressure control value according to the set value and the second margin ratio; obtaining a third water pressure control value according to the set value and the third water pressure margin, or obtaining a third water pressure control value according to the set value and the third margin ratio; wherein, the first water pressure margin and the second water pressure margin are opposite in sign, and the third water pressure margin is greater than the positive value of the first water pressure margin and the second water pressure margin; the first margin ratio and the second margin ratio are opposite in sign, and the third margin ratio is greater than the positive value of the first margin ratio and the second margin ratio.

[0041] In some optional embodiments of the present application, the water pressure range is determined based on the multiple water pressure control values ​​according to the relationship between the water outlet flow rate of the control point of the cleaning system and the flow threshold, including: when the water outlet flow rate of the control point of the cleaning system is less than the flow threshold, the first water pressure range is obtained according to the water pressure starting value of the cleaning system and the third water pressure control value; when the water outlet flow rate of the control point of the cleaning system is greater than the flow threshold, the second water pressure range is obtained according to the first water pressure control value and the second water pressure control value.

[0042] In some optional embodiments of the present application, based on the relationship between the current water pressure of the control point and the determined water pressure range, an adjustment instruction for the water pressure regulating device is generated, including: when the determined water pressure range is a first water pressure range and the current water pressure is within the first water pressure range, generating a power increase instruction for the water pressure regulating device; when the determined water pressure range is the first water pressure range and the current water pressure is outside the first water pressure range, generating a pause instruction for the water pressure regulating device; when the determined water pressure range is a second water pressure range and the current water pressure is lower than the lower limit of the second water pressure range, generating a power increase instruction for the water pressure regulating device; when the determined water pressure range is the second water pressure range and the current water pressure is higher than the upper limit of the second water pressure range, generating a power reduction instruction for the water pressure regulating device. In some optional embodiments of the present application, before obtaining the set value of the washing water pressure of the washing system, the device further includes a status monitoring module for monitoring the on state of the washing system, and when the on state is on, executing subsequent steps.

[0043] The specific definition of each functional module in the control device of the above-mentioned vehicle-mounted electric drive cleaning system can be found in the definition of the control method of the vehicle-mounted electric drive cleaning system above, and will not be repeated here. Each module in the above-mentioned system can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules. It also achieves the beneficial effects of automatic threshold determination and automatic start and stop control of the electric drive system.

[0044] In some embodiments of the present application, an electronic device is further provided, comprising: at least one processor; a memory connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the at least one processor executes the control method of the vehicle-mounted electric drive cleaning system. The internal structure diagram can be as follows Figure 4 shown. Figure 4The internal structure diagram of an electronic device according to an embodiment of the present application is schematically shown. The electronic device includes a processor A01, a network interface A02, a memory (not shown in the figure) and a database (not shown in the figure) connected via a system bus. Among them, the processor A01 of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes an internal memory A03 and a non-volatile storage medium A04. The non-volatile storage medium A04 stores an operating system B01, a computer program B02 and a database (not shown in the figure). The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 in the non-volatile storage medium A04. The network interface A02 of the electronic device is used to communicate with an external terminal through a network connection. When the computer program B02 is executed by the processor A01, a control method for a vehicle-mounted electric drive washing system is implemented.

[0045] Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the electronic device to which the solution of the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0046] In one embodiment provided in the present application, a machine-readable storage medium is provided, on which instructions are stored. When the instructions are executed by a processor, the processor is configured to execute the aforementioned control method for the vehicle-mounted electric drive washing system.

[0047] In one embodiment provided in the present application, a computer program product is provided, including a computer program, which implements the aforementioned control method of the vehicle-mounted electric drive washing system when executed by a processor.

[0048] In some embodiments of the present application, an engineering vehicle is also provided, such as a concrete pump truck. When the engineering vehicle is equipped with the aforementioned on-board electric drive cleaning system or control method logic, it also has the advantages of the aforementioned on-board electric drive cleaning system or control method.

[0049] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0050] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0051] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0052] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0053] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0054] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0055] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can be implemented using any method or technology to store information. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase-change RAM (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media such as modulated data signals and carrier waves.

[0056] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0057] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A control method for a vehicle-mounted electric drive cleaning system, characterized in that: The method comprises: Get the set value of the cleaning water pressure of the cleaning system; determining a plurality of water pressure control values ​​at a control point in the water supply pipeline according to the set value; determining a water pressure range based on the plurality of water pressure control values ​​according to a relationship between the water flow rate of the control point of the cleaning system and a flow rate threshold; An adjustment instruction for the water pressure regulating device is generated according to the relationship between the current water pressure of the control point and the determined water pressure range.

2. The method according to claim 1, characterized in that Get the set value of the cleaning system's water pressure, including: Obtaining a system default value of the cleaning water pressure of the cleaning system; Obtaining a set value of the cleaning water pressure input via a control interface of the cleaning system; or A set value of the cleaning water pressure input by an external device having a signal coupling relationship with the cleaning system is obtained.

3. The method according to claim 1, characterized in that The certain control point is the water pump outlet of the cleaning system; Determining multiple water pressure control values ​​of a control point in the water supply pipeline according to the set value includes: Obtaining a first water pressure control value according to the set value and the first water pressure margin, or obtaining the first water pressure control value according to the set value and the first margin ratio; Obtaining a second water pressure control value according to the set value and the second water pressure margin, or obtaining the second water pressure control value according to a ratio of the set value and the second margin; Obtaining a third water pressure control value according to the set value and the third water pressure margin, or obtaining the third water pressure control value according to the set value and the third margin ratio; Among them, the first water pressure margin and the second water pressure margin are opposite in sign, and the third water pressure margin is greater than the positive value of the first water pressure margin and the second water pressure margin; the first margin ratio and the second margin ratio are opposite in sign, and the third margin ratio is greater than the positive value of the first margin ratio and the second margin ratio.

4. The method according to claim 3, characterized in that Determining a water pressure range based on the plurality of water pressure control values ​​according to a relationship between the water flow rate of the control point of the cleaning system and a flow rate threshold includes: When the water flow rate at the control point of the cleaning system is less than the flow rate threshold, a first water pressure range is obtained according to the water pressure starting value of the cleaning system and the third water pressure control value; When the water outflow rate of the control point of the cleaning system is greater than the flow rate threshold, a second water pressure range is obtained according to the first water pressure control value and the second water pressure control value.

5. The method according to claim 4, characterized in that Generating an adjustment instruction for the water pressure regulating device according to the relationship between the current water pressure of the control point and the determined water pressure range, including: generating a power increase instruction to the water pressure regulating device when the determined water pressure range is a first water pressure range and the current water pressure is within the first water pressure range; When the determined water pressure range is a first water pressure range and the current water pressure is outside the first water pressure range, generating a pause instruction for the water pressure regulating device; generating a power increase instruction for the water pressure regulating device when the determined water pressure range is a second water pressure range and the current water pressure is lower than a lower limit of the second water pressure range; When the determined water pressure range is the second water pressure range and the current water pressure is higher than the upper limit of the second water pressure range, a power reduction instruction is generated for the water pressure regulating device.

6. The method according to any one of claims 1 to 5, characterized in that Before obtaining the set value of the washing water pressure of the washing system, the method further includes monitoring the opening state of the washing system, and when the opening state is on, executing subsequent steps.

7. A vehicle-mounted electric drive cleaning system, comprising a water pressure regulating device, a water outlet, and a water supply pipeline therebetween, wherein the water pressure regulating device comprises a water pump and a motor for providing power to the water pump, characterized in that: Also includes: A water outlet pressure sensor and a control module for controlling the water pressure regulating device, wherein the control module is configured to execute the control method of the vehicle-mounted electric drive cleaning system according to any one of claims 1 to 6.

8. The system according to claim 7, characterized in that The on state of the cleaning system is determined by the on state of the cleaning switch; The relationship between the water outflow rate of the control point and the flow threshold is determined by the opening state of the water outlet.

9. The system according to claim 8, characterized in that The water gun device where the water outlet is located is provided with a water pressure regulating component and a communication component, and the communication component sends the setting value of the cleaning water pressure mapped by the current state of the water pressure regulating component to the control module.

10. An engineering vehicle, characterized in that: The engineering vehicle includes the on-board electric drive cleaning system according to any one of claims 7 to 9, or the controller of the engineering vehicle is configured to execute the control method of the on-board electric drive cleaning system according to any one of claims 1 to 6.

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