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

Abstract

The embodiment of the application provides a kind of vehicle-mounted electric drive cleaning system and its control method, engineering vehicle, it is related to electric drive control technical field.The method comprises the following steps: obtaining the set value of the cleaning water pressure of the cleaning system;According to the set value, determine a plurality of water pressure control values of a control point in the water supply pipeline;According to the relationship between the water flow of the control point of the cleaning system and the flow threshold value, determine the water pressure range based on the plurality of water pressure control values;According to the relationship between the current water pressure of the control point and the determined water pressure range, generate the adjustment instruction of water pressure adjusting device.The embodiment provided by the application has the advantages of automatically generating adjustment threshold value and realizing automatic control of electric drive system.

Description

Technical Field

[0001] This application relates to the field of electric drive control technology, specifically to an on-board electric drive cleaning system, a control method for an on-board electric drive cleaning system, and an engineering vehicle. Background Technology

[0002] Traditional oil-fired concrete pump trucks use diesel engines to drive hydraulic motors for cleaning systems, regulating water supply pressure and allowing pressure relief and backflow when the high-pressure water guns are shut off via overflow valves. However, with the electrification and greening of construction machinery, mild hybrid electric and pure electric powertrains have emerged, rendering traditional cleaning system structures and drive methods inadequate for energy conservation and emission reduction requirements.

[0003] For example, some existing water pump control methods use a diesel engine to drive a hydraulic motor to power the cleaning water pump, and use an overflow valve to regulate the outlet water pressure and achieve pressure relief and backflow when the high-pressure water gun is turned off. These methods have drawbacks such as requiring an overflow device and pressure gauge, the engine and water pump continuing to run even when the water gun is turned off, resulting in energy waste, and excessive engine output power when performing cleaning operations alone.

[0004] For example, some existing technologies have intelligent and efficient water pump control systems that use data obtained from flow sensors and water pressure sensors to control the switching of motors after analysis. However, these systems do not disclose the methods for determining the various water pressure thresholds, which hinders the implementation of the control method. Summary of the Invention

[0005] The purpose of this application is to provide an on-board electric cleaning system and its control method, as well as an engineering vehicle, which realizes the 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 art.

[0006] To achieve the above objectives, this application provides a control method for an on-board electric cleaning system. The method includes: acquiring a set value for the cleaning water pressure of the cleaning system; determining multiple water pressure control values ​​for a control point in the water supply pipeline based on the set value; determining a water pressure range based on the multiple water pressure control values ​​according to the relationship between the outflow rate of the control point and the flow rate threshold of the cleaning system; and generating an adjustment command for a water pressure regulating device based on 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 control point is the water pump outlet of the cleaning system; determining multiple water pressure control values ​​for a control point in the water supply pipeline based on the set value includes: obtaining a first water pressure control value based on the set value and a first water pressure margin, or obtaining a first water pressure control value based on the ratio of the set value and the first margin; obtaining a second water pressure control value based on the set value and a second water pressure margin, or obtaining a second water pressure control value based on the ratio of the set value and the second margin; obtaining a third water pressure control value based on the set value and a third water pressure margin, or obtaining a third water pressure control value based on the ratio of the set value and the third margin; 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, the water pressure range is determined based on the relationship between the outflow rate and the flow threshold at the control point of the cleaning system, according to the plurality of water pressure control values, including: when the outflow rate at the control point of the cleaning system is less than the flow threshold, obtaining a first water pressure range based on the initial water pressure value of the cleaning system and the third water pressure control value; and when the outflow rate at the control point of the cleaning system is greater than the flow threshold, obtaining a second water pressure range based on the first water pressure control value and the second water pressure control value.

[0010] Optionally, based on the relationship between the current water pressure at the control point and the determined water pressure range, an adjustment command 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 command 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 command for the water pressure regulating device; when the determined water pressure range is a second water pressure range and the current water pressure is below the lower limit of the second water pressure range, generating a power increase command for the water pressure regulating device; when the determined water pressure range is the second water pressure range and the current water pressure is above the upper limit of the second water pressure range, generating a power decrease command 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 on / off status of the cleaning system, and when the on / off status is "on", performing subsequent steps.

[0012] This application also provides an on-board electric cleaning system, including a water pressure regulating device, a water outlet, and a water supply pipeline between the two. The water pressure regulating device includes a water pump and a motor that provides power to the water pump. It also includes a water 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 on-board electric cleaning system.

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

[0014] Optionally, the water gun device where the water outlet is located is equipped with a water pressure regulating component and a communication component. 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] This application also provides an engineering vehicle, including: the engineering vehicle includes the aforementioned on-board electric cleaning system, or the controller of the engineering vehicle is configured to execute the control method of the aforementioned on-board electric cleaning system.

[0016] This application also provides an electronic device, including: at least one processor; and a memory connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the at least one processor implements the aforementioned control method for an on-board electric cleaning system by executing the instructions stored in the memory.

[0017] This application also provides a machine-readable storage medium storing instructions that, when executed by a processor, configure the processor to perform the control method for implementing the aforementioned vehicle-mounted electric cleaning system.

[0018] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the aforementioned control method for an on-board electric drive cleaning system.

[0019] The above technical solution has the following beneficial effects: (1) The water pump is driven by an electric motor and powered by electricity, which is in line with the trend of greening and electrification of engineering vehicles.

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

[0021] (3) The control logic in the control method realizes the automatic start-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 this application will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 The schematic diagram illustrates the steps of a control method for an on-board electric cleaning system according to an embodiment of this application. Figure 2 The schematic diagram illustrates the implementation process of the control method for the vehicle-mounted electric cleaning system according to the embodiments of this application; Figure 3 This schematic diagram illustrates the structure of the control device for the vehicle-mounted electric cleaning system according to an embodiment of this application. Figure 4 The diagram schematically illustrates the internal structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0024] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the embodiments of this application.

[0025] Figure 1 The diagram illustrates the steps of a control method for an on-board electric cleaning system according to an embodiment of this application. For example... Figure 1 As shown, a control method for an on-board electric cleaning system includes: S01. Obtain the set value of the cleaning water pressure of the cleaning system; S02. Determine multiple water pressure control values ​​for a certain control point in the water supply pipeline based on the set values; S03. Based on the relationship between the outflow rate and the flow threshold of the control point of the cleaning system, determine the water pressure range based on the multiple water pressure control values; S04. Based on the relationship between the current water pressure at the control point and the determined water pressure range, generate adjustment instructions for the water pressure regulating equipment.

[0026] Through the above implementation methods, each water pressure control value is automatically set based on the preset values, replacing the manual adjustment of the overflow valve opening in the original technology, thus providing the advantage of automatic control. Simultaneously, automatic start-stop control of the electric drive system is achieved. Compared to continuous operation in the original technology, the standby function saves unnecessary energy consumption and reduces the risk of motor overheating under continuous overflow load.

[0027] In some implementations, obtaining the setting value of the cleaning water pressure of the cleaning system in step S01 includes: obtaining the system default value of the cleaning water pressure of the cleaning system; the system default value here may be the system default value when the cleaning system was manufactured, the cleaning water pressure value last used by the user stored in the cleaning system, or a suitable value obtained based on big data analysis and other technologies. Obtaining the setting value of the cleaning water pressure input through the control interface of the cleaning system includes: the user entering the corresponding required value on the corresponding setting interface on the vehicle control operation screen, or the required value input by the user through other input devices. Obtaining the setting value of the cleaning water pressure input by external devices that have a signal coupling relationship with the cleaning system includes: the setting value of the cleaning water pressure input on other external devices besides the main unit, where the external devices include remote controls, water guns with numerical input or numerical adjustment functions, or control components with numerical input or numerical adjustment functions linked to the water gun.

[0028] In step S02, the aforementioned control point can be set at any location on the water supply pipeline, such as the outlet of the water pump, the outlet of the water gun, or the connection between the water gun inlet and the water supply pipeline. In some embodiments of this application, the control point is the water pump outlet of the cleaning system, and water pressure control at this location can ensure the accuracy of the output water pressure. Determining multiple water pressure control values ​​at a control point in the water supply pipeline based on the set values ​​includes: obtaining a first water pressure control value based on the set values ​​and a first water pressure margin, or obtaining a first water pressure control value based on the ratio of the set values ​​and the first margin; obtaining a second water pressure control value based on the set values ​​and a second water pressure margin, or obtaining a second water pressure control value based on the ratio of the set values ​​and the second margin; obtaining a third water pressure control value based on the set values ​​and a third water pressure margin, or obtaining a third water pressure control value based on the ratio of the set values ​​and the third margin; 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 either the first or 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 either the first or the second margin ratio. This embodiment can be automatically calculated based on the water pressure margin. For example, if the current cleaning water pressure setting is 8 MPa, the system automatically allocates the various water pressure thresholds according to the fluctuation range 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 some alternative methods, the system can also be automatically calculated based on the margin ratio. For example, if the current cleaning water pressure setting is 8 MPa, the system automatically allocates the various water pressure thresholds according to the fluctuation range 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 methods, automatic allocation or determination of various water pressure control values ​​is achieved, replacing the manual adjustment of the overflow valve opening in the original technology. The determination of the water pressure margin and margin ratio can be based on the operating parameters of the water pump and water gun, but the following must be followed: 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 either 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 either the first or second margin ratio.

[0029] In some embodiments of this application, a water pressure range is determined based on the relationship between the water flow rate at the control point of the cleaning system and the flow threshold, according to the plurality of water pressure control values. This includes: when the water flow rate at the control point of the cleaning system is less than the flow threshold, obtaining a first water pressure range based on the initial water pressure value of the cleaning system and the third water pressure control value; and when the water flow rate at the control point of the cleaning system is greater than the flow threshold, obtaining a second water pressure range based on the first water pressure control value and the second water pressure control value. In this embodiment, the water flow rate can be acquired by a flow sensor, and then compared and judged by the control module to obtain the relationship between the water flow rate and the flow threshold. 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 this time, the water pressure of the cleaning system is the initial water pressure value, which is usually 0. At this time, the high-pressure water gun has not yet been turned on, and when the current flow rate is <2L / min, this 2L / min is the system value, which the vehicle manufacturer can set according to requirements. 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 is (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 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 requirements. The system then determines that it is in operation. At this time, the second water pressure range should be used, 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 is not a limitation. At this time, the control module adjusts the water pressure regulating device based on the second water pressure range. For example, it can adjust it separately according to the water pressure below the lower limit of the range, within the range, and above the upper limit of the range. Through this embodiment, the 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 level of automation control of the system.

[0030] In some embodiments of this application, an adjustment command for the water pressure regulating device is generated based on the relationship between the current water pressure at the control point and the determined water pressure range. In some common embodiments, the adjustment command mainly targets the motor connected to the water pump. The motor speed corresponds to the water pump's output pressure; therefore, the cleaning water pressure is controlled by adjusting the motor speed. This embodiment achieves automatic start-stop control of the electric drive system. Compared to continuous operation in the original technology, the standby function saves unnecessary energy consumption and reduces the risk of overheating of the motor under continuous overflow load. The adjustment specifically includes: when the determined water pressure range is a first water pressure range, and the current water pressure is within the first water pressure range, a power increase command is generated for the water pressure regulating device; when the cleaning system starts, the water pressure typically rises from 0. At this time, the motor is controlled to start operating at a default safe speed, increasing the motor output power to raise the water pressure. This can also be considered as the cleaning system being 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 command 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 outlet pressure rises to the third water pressure control value, the control module controls the electric drive system to standby, at which time the motor stops running. For example, when the current flow rate is <2L / min, this 2L / min is the system value. The vehicle manufacturer can set it according to requirements 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 outlet pressure increases until it reaches the standby threshold of 8.8 or 9.0MPa, triggering the standby command. 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 command 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 decrease command is generated for the water pressure regulating device. When the determined water pressure range is the second water pressure range, the cleaning system can be considered to have switched from the aforementioned standby state to the operation control cycle. By increasing or decreasing the motor output power, the outlet water pressure is kept stable within the constant pressure regulation range. That is, when the pressure is ≤7.6 or 7.5 MPa, the pressure boosting regulation is activated, increasing the motor output power until the pressure reaches 8.0 MPa; when the pressure is ≥8.4 or 8.5 MPa, the pressure reduction regulation is activated, decreasing the motor output power until the pressure reaches 8.0 MPa, and so on in a cyclical adjustment. This embodiment can maintain a stable outlet water pressure through pressure feedback and automatic adjustment.

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

[0032] Based on the same inventive concept, this application also provides a vehicle-mounted electric cleaning system, including a water pressure regulating device, a water outlet, and a water supply pipeline between the two. The water pressure regulating device includes a water pump and a motor that provides power to the water pump, and further includes: a water 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 cleaning system. The vehicle-mounted electric cleaning system of this embodiment mainly consists of the following parts: a control module, such as a vehicle control module, which can be newly added PLC hardware or a new function on an existing PLC; an execution module, including: a motor, a water pump, a high-pressure water gun, a water pressure sensor (optional), and a water flow sensor; and auxiliary components, including: a vehicle control operation screen and a high-pressure water pipe. The main features of this vehicle-mounted electric 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 achieve constant pressure regulation and standby based on each water pressure threshold.

[0033] In some embodiments of this application, the on / off state of the cleaning system is determined by the on / off state of the cleaning switch; the relationship between the water flow rate at the control point and the flow threshold is determined by the on / off state of the water outlet. This embodiment provides a technical solution based on state linkage between the cleaning switch and the water outlet control switch. The water gun outlet and the water pump outlet belong to the same water supply pipeline and are interconnected; the 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 state can be determined by monitoring the state of the water outlet control switch, and it is assumed that the water flow rate is above the flow threshold. When the water outlet control switch is on, the outlet is considered open, confirming that the water flow rate is greater than the flow threshold; when the water outlet control switch is off, the outlet is considered closed, confirming that the water flow rate is less than the flow threshold. This embodiment avoids the need for flow sensor settings and control condition judgments, directly determining the operating and standby states of the cleaning system through the on / off state of the water outlet, simplifying the overall system structure. For example, when the user needs to temporarily leave during operation and turns off the water gun switch, the cleaning system's cleaning switch is in the on state, the water outlet is in the off state, the control device automatically determines that it is in standby mode, and stops the electric drive system from operating, achieving an energy-saving effect. When the user turns off the cleaning system, the cleaning switch is in the off state, the whole vehicle exits the aforementioned control method, and stops monitoring the set values ​​and water pressure values.

[0034] In some embodiments of this application, the water gun device where the water outlet is located is equipped with a water pressure regulating component and a communication component. 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. Taking the water pressure regulating component as an adjustment knob as an example, this adjustment knob is located on the handle of the water gun device. The user can adjust the cleaning pressure in real time by rotating this adjustment knob during the cleaning operation, that is, to determine the setting value of the cleaning water pressure. The state value of the adjustment knob or the setting value of the cleaning water pressure is sent to the control module through the communication component, such as a Bluetooth communication module. The control module thereby obtains the setting value of the cleaning water pressure or obtains the setting value of the cleaning 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. It realizes remote adjustment of cleaning pressure, and the user can conveniently adjust the cleaning pressure according to actual needs during operation.

[0035] In some embodiments of this application, real-time monitoring of cleaning pressure and flow rate is also provided. In this embodiment, pressure and flow rate values ​​are monitored in real time by pressure and flow sensors at the outlet location and transmitted back to the vehicle control module. Simultaneously, the vehicle control module is connected to the vehicle control operation screen, displaying the values ​​on the corresponding interface for the user to view at any time. Through 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] Through the above implementation method, pressure feedback control replaces the original overflow valve opening adjustment control. Furthermore, the control logic in the control module enables automatic start-stop control of the electric drive system. Compared to continuous operation in the original technology, the standby function saves unnecessary energy consumption and reduces the risk of motor overheating under continuous overflow load.

[0037] Figure 2 The illustration schematically shows a diagram illustrating the implementation process of the control method for the vehicle-mounted electric cleaning system according to an embodiment of this application. For example... Figure 2 As shown, the working principle and steps of one embodiment of this application are as follows: (1) View the current cleaning water pressure setting value through the system interface, and set the water supply pressure value X required for 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, since the water gun is not turned on, the water outlet flow rate is less than the judgment value. The system is judged to be in standby cycle. The motor starts running until the water outlet pressure rises to the standby threshold Z. The system automatically enters standby state and the motor stops running. (3) When the operator turns on the cleaning water gun, if the water flow rate at the outlet is greater than or equal to the judgment value, the system determines that it is a work cycle, the system automatically enters the working state, and the motor starts running. (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, if the outlet flow rate is less than the judgment value, the system will determine that it is in standby cycle. The motor will continue to run until the outlet pressure reaches the standby threshold Z. Then the system will automatically return to standby state and the motor will stop running. (6) When the cleaning switch is turned off, the system is powered off.

[0038] Based on the same inventive concept, this application also provides a control device for an on-board electric cleaning system. Figure 3 A schematic diagram illustrating the structure of the control device for an on-board electric cleaning system according to an embodiment of this application is shown. 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 ​​at a certain control point in the water supply pipeline based on the setting value; a threshold determination module for determining a water pressure range based on the multiple water pressure control values ​​according to the relationship between the outflow rate of the control point of the cleaning system and the flow rate threshold; and an instruction generation module for generating an adjustment instruction for the water pressure regulating device based on the relationship between the current water pressure of the control point and the determined water pressure range.

[0039] In some optional embodiments of this 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 this application, the control point is the water pump outlet of the cleaning system; determining multiple water pressure control values ​​for a control point in the water supply pipeline based on the set value includes: obtaining a first water pressure control value based on the set value and a first water pressure margin, or obtaining a first water pressure control value based on the ratio of the set value and the first margin; obtaining a second water pressure control value based on the set value and a second water pressure margin, or obtaining a second water pressure control value based on the ratio of the set value and the second margin; obtaining a third water pressure control value based on the set value and a third water pressure margin, or obtaining a third water pressure control value based on the ratio of the set value and the third margin; 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 this application, the water pressure range is determined based on the relationship between the water flow rate at the control point of the cleaning system and the flow rate threshold, according to the plurality of water pressure control values. This includes: when the water flow rate at the control point of the cleaning system is less than the flow rate threshold, obtaining a first water pressure range based on the water pressure initial value of the cleaning system and the third water pressure control value; and when the water flow rate at the control point of the cleaning system is greater than the flow rate threshold, obtaining a second water pressure range based on the first water pressure control value and the second water pressure control value.

[0042] In some optional embodiments of this application, an adjustment command for the water pressure regulating device is generated based on the relationship between the current water pressure at the control point and the determined water pressure range. This includes: generating a power increase command for 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; generating a pause command 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 power increase command for the water pressure regulating device when the determined water pressure range is a second water pressure range and the current water pressure is below the lower limit of the second water pressure range; and generating a power decrease command for the water pressure regulating device when the determined water pressure range is the second water pressure range and the current water pressure is above the upper limit of the second water pressure range. In some optional embodiments of this application, before obtaining the setting value of the cleaning water pressure of the cleaning system, the device further includes a status monitoring module for monitoring the on / off status of the cleaning system. When the on / off status is "on," subsequent steps are executed.

[0043] The specific limitations of each functional module in the control device of the aforementioned vehicle-mounted electric cleaning system can be found in the limitations of the control method for the vehicle-mounted electric cleaning system described above, and will not be repeated here. Each module in the above system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module. This also achieves the beneficial effects of automatic threshold determination and automatic start-stop control of the electric drive system.

[0044] In some embodiments of this application, an electronic device is also provided, comprising: at least one processor; and a memory connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which executes the aforementioned control method for an on-board electric cleaning system. Its internal structure diagram can be shown as follows. Figure 4 As shown. Figure 4This diagram schematically illustrates the internal structure of an electronic device according to an embodiment of this application. The electronic device includes a processor A01, a network interface A02, a memory (not shown), and a database (not shown) connected via a system bus. The processor A01 provides computing and control capabilities. The memory includes 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). The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 stored in the non-volatile storage medium A04. The network interface A02 is used for communication with external terminals via a network connection. When the computer program B02 is executed by the processor A01, it implements a control method for an on-board electric cleaning system.

[0045] Those skilled in the art will understand that Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the electronic device to which 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 different component arrangements.

[0046] In one embodiment provided in this application, a machine-readable storage medium is provided, on which instructions are stored, which, when executed by a processor, cause the processor to be configured to perform the aforementioned control method of the vehicle-mounted electric cleaning system.

[0047] In one embodiment provided in this application, a computer program product is provided, including a computer program that, when executed by a processor, implements the aforementioned control method for an on-board electric drive cleaning system.

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

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

[0050] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0051] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0052] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

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

[0054] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0055] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (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, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0056] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0057] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A control method for an on-board electric-driven cleaning system, characterized in that, The method includes: Obtain the set value of the cleaning water pressure of the cleaning system; Based on the set values, determine multiple water pressure control values ​​for a certain control point in the water supply pipeline; Based on the relationship between the outflow rate and the flow threshold of the control point of the cleaning system, the water pressure range is determined based on the multiple water pressure control values. Based on the relationship between the current water pressure at the control point and the determined water pressure range, an adjustment command for the water pressure regulating device is generated.

2. The method according to claim 1, characterized in that, Obtain the set value of the cleaning water pressure of the cleaning system, including: Obtain the system default value of the cleaning water pressure of the cleaning system; or Obtain the set value of the cleaning water pressure input through the control interface of the cleaning system; or Obtain the setting value of the cleaning water pressure input by an external device that has a signal coupling relationship with the cleaning system.

3. The method according to claim 1, characterized in that, The control point is the water pump outlet of the cleaning system; Based on the set values, multiple water pressure control values ​​are determined for a specific control point in the water supply pipeline, including: The first water pressure control value is obtained based on the set value and the first water pressure margin, or the first water pressure control value is obtained based on the ratio of the set value and the first margin. The second water pressure control value is obtained based on the set value and the second water pressure margin, or the second water pressure control value is obtained based on the ratio of the set value and the second margin. The third water pressure control value is obtained based on the set value and the third water pressure margin, or the third water pressure control value is obtained based on the ratio of the set value and the third margin. Wherein, the first water pressure margin is opposite in sign to the second water pressure margin, and the third water pressure margin is greater than the positive value of the first water pressure margin and the second water pressure margin; or, the first margin ratio is opposite in sign to the second margin ratio, 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, Based on the relationship between the outflow rate and the flow rate threshold at the control point of the cleaning system, the water pressure range is determined based on the multiple water pressure control values, including: When the outflow rate at the control point of the cleaning system is less than the flow threshold, the first water pressure range is obtained based on the initial water pressure 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 rate threshold, a second water pressure range is obtained based on the first water pressure control value and the second water pressure control value.

5. The method according to claim 4, characterized in that, Based on the relationship between the current water pressure at the control point and the determined water pressure range, adjustment commands for the water pressure regulating equipment are 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, a power increase command is generated 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, a pause operation command is generated for the water pressure regulating equipment. 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 command for the water pressure regulating device is generated. 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 command 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 cleaning water pressure of the cleaning system, the method further includes monitoring the on / off status of the cleaning system, and when the on / off status is "on", performing subsequent steps.

7. A vehicle-mounted electric cleaning system, comprising a water pressure regulating device, a water outlet, and a water supply pipeline between the two, wherein the water pressure regulating device includes a water pump and a motor that provides power to the water pump, characterized in that, Also includes: The system includes a water pressure sensor and a control module for controlling the water pressure regulating device, the control module being configured to perform the control method of the vehicle-mounted electric cleaning system according to any one of claims 1 to 6.

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

9. The system according to claim 8, characterized in that, The water gun device where the water outlet is located is equipped with a water pressure regulating component and a communication component. 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 vehicle-mounted electric cleaning system according to any one of claims 7 to 9, or the controller of the engineering vehicle is configured to perform the control method of the vehicle-mounted electric cleaning system according to any one of claims 1 to 6.

Images