A control circuit, a PCB board and a remote controller of a high-pressure cleaning vehicle

Abstract

The utility model discloses a kind of control circuit, PCB board and remote controller of high-pressure cleaning car remote controller, control circuit includes power supply unit, control unit, mode switching unit, lance pressure adjustment unit and communication unit, the input end of power supply unit is connected power supply device, for control unit, mode switching unit, lance pressure adjustment unit and communication unit power supply;The output end of mode switching unit and lance pressure adjustment unit is respectively connected the control input end of control unit;Control unit carries out information interaction with external device or high-pressure cleaning car by communication unit;The control circuit disclosed in the application, realize the electronicization adjustment of high-pressure cleaning car water pressure by lance pressure adjustment unit, replace artificial oil door operation, improve the stability and accuracy of water pressure control;Wireless remote control of high-pressure cleaning car is realized by communication unit, eliminates the obstacle of physical isolation, reduces the delay of instruction transmission, and break through the restriction of cable length, expand operating range.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure cleaning vehicle technology, and in particular to a control circuit, PCB board and remote control for a high-pressure cleaning vehicle remote control. Background Technology

[0002] Traditional high-pressure cleaning trucks have many limitations in terms of operation control.

[0003] First, the power adjustment of the high-pressure water pump in traditional high-pressure cleaning trucks mainly relies on the operator to directly drive the engine by stepping on the accelerator pedal, thereby controlling the output power. This manual operation of the accelerator pedal has obvious shortcomings, because the stability of water pressure and flow depends to a large extent on the operator's experience and reaction speed. Inexperienced operators may not be able to accurately adjust the accelerator, resulting in fluctuations in water pressure and flow, which in turn affects the cleaning effect and the service life of the equipment.

[0004] Secondly, the control terminal of traditional high-pressure cleaning trucks is usually fixed on the operating platform at the rear of the vehicle. This results in physical isolation between the operator and the on-site work area. This design flaw causes delays in command transmission because the operator cannot observe the situation on the work site in real time and therefore cannot adjust the operating instructions in a timely manner. At the same time, due to the lack of real-time feedback on the site, the operator has difficulty accurately grasping the cleaning effect and equipment status, increasing the risk of misoperation, which may lead to waste of resources or equipment damage.

[0005] Furthermore, the wired control method of traditional high-pressure cleaning trucks has obvious limitations in complex environments; due to the limitation of cable length, operators cannot effectively control the truck when they are a certain distance away, which is particularly prominent in large venues or special environments.

[0006] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0007] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a control circuit for a high-pressure cleaning truck remote control, which realizes electronic adjustment of water pressure through a water gun pressure adjustment unit, thereby improving stability and accuracy; the communication unit supports wireless remote control, eliminating physical isolation, reducing delay, and expanding the operating range.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A control circuit for a high-pressure cleaning truck remote control includes a power supply unit, a control unit, a mode switching unit, a water gun pressure adjustment unit, and a communication unit. The input terminal of the power supply unit is connected to a power supply device, and the output terminal of the power supply unit is connected to the power supply terminals of the control unit, the mode switching unit, the water gun pressure adjustment unit, and the communication unit, respectively. The output terminals of the mode switching unit and the water gun pressure adjustment unit are respectively connected to the control input terminal of the control unit. The control unit interacts with external devices or the high-pressure cleaning truck through the communication unit.

[0010] In the control circuit, the power supply unit includes a power input section, a boost section, and a voltage regulator section. The input terminal of the power input section is used to connect to the power supply device. The output terminal of the power input section is connected to the input terminal of the boost section. The output terminal of the boost section is connected to the input terminal of the voltage regulator section and the power supply terminal of the mode switching unit. The output terminal of the voltage regulator section is connected to the power supply terminal of the control unit, the power supply terminal of the water gun pressure adjustment unit, and the power supply terminal of the communication unit.

[0011] In the control circuit, the power supply unit further includes a power detection unit, the input terminal of which is connected to the output terminal of the power input unit, and the output terminal of which is connected to the detection input terminal of the control unit.

[0012] In the control circuit, the control unit includes a control section and a filtering section. The input terminal of the filtering section is connected to the output terminal of the power supply unit, and the output terminal of the filtering section is connected to the power supply terminal of the control section. The output terminals of the mode switching unit and the water gun pressure adjustment unit are electrically connected to the control input terminal of the control section, respectively.

[0013] In the control circuit, the communication unit includes a wireless communication unit and a screen control unit. The signal interaction terminal of the wireless communication unit is connected to the wireless signal interaction terminal of the control unit; the signal interaction terminal of the screen control unit is connected to the screen signal interaction terminal of the control unit; the wireless communication unit is used to realize wireless communication connection between the control unit and external equipment or high-pressure cleaning vehicle, and the screen control unit is used to realize information interaction between the control unit and the display screen on the controller.

[0014] In the control circuit, the water gun pressure adjustment unit includes a potentiometer connection part and a pressure divider part. The input end of the pressure divider part is connected to the output end of the power supply unit, the output end of the pressure divider part is connected to the power supply end of the potentiometer connection part, and the output end of the potentiometer connection part is connected to the control input end of the control unit.

[0015] In the control circuit, the mode switching unit includes multiple button sections, and the multiple button sections have the same structure; each button section includes a connection group, a pull-up group, and an indicator light control group. The connection group is used to connect the button and the indicator light. The output terminal of the connection group is connected to the pull-up group and the control input terminal of the control unit. The input terminal of the indicator light control group is connected to the control output terminal of the control unit, and the output terminal of the indicator light control group is connected to the input terminal of the connection group.

[0016] The control circuit also includes an emergency stop unit, the output of which is connected to the control input of the control unit.

[0017] This utility model also provides a PCB board, characterized in that the PCB board is printed with the control circuit of the high-pressure cleaning vehicle remote control as described above.

[0018] This utility model also provides a high-pressure cleaning truck remote control, which uses the control circuit of any of the high-pressure cleaning truck remote controls described above to achieve operation control.

[0019] Beneficial effects:

[0020] This invention provides a control circuit for a high-pressure cleaning truck remote control. First, the water pressure of the high-pressure cleaning truck is electronically adjusted through a water gun pressure regulating unit, replacing manual throttle operation and improving the stability and accuracy of water pressure control. Second, the high-pressure cleaning truck is wirelessly remotely controlled through a communication unit, eliminating physical isolation barriers, reducing command transmission delays, and overcoming cable length limitations, thus expanding the operating range. Third, the high-pressure cleaning truck can quickly switch to multiple preset working modes through a mode switching unit, meeting the needs of different work scenarios without frequent manual adjustments, improving work efficiency and ease of operation. Attached Figure Description

[0021] Figure 1 A circuit block diagram of the control circuit provided by this utility model;

[0022] Figure 2 The circuit schematic diagram of the control unit provided by this utility model;

[0023] Figure 3 The circuit diagram of the power supply unit provided by this utility model;

[0024] Figure 4 The circuit schematic diagram of the communication unit provided by this utility model;

[0025] Figure 5 The circuit diagram of the water gun pressure adjustment unit provided by this utility model;

[0026] Figure 6 The circuit schematic diagram of the mode switching unit provided by this utility model;

[0027] Figure 7 The circuit diagram of the emergency stop unit provided by this utility model.

[0028] Explanation of main component symbols: 1-Power supply unit, 11-Power input section, 12-Boost section, 13-Voltage regulator section, 14-Power detection section, 2-Control unit, 21-Control section, 22-Filter section, 3-Mode switching unit, 31-Button section, 4-Water gun pressure adjustment unit, 41-Polypotentiometer connection section, 42-Voltage divider section, 5-Communication unit, 51-Wireless communication section, 52-Screen control section, 6-Emergency stop unit. Detailed Implementation

[0029] This utility model provides a control circuit, PCB board, and remote control for a high-pressure cleaning truck. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0030] In the description of this utility model, it should be understood that the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Please see Figures 1 to 7 This utility model provides a control circuit for a high-pressure cleaning truck remote control, including a power supply unit 1, a control unit 2, a mode switching unit 3, a water gun pressure adjustment unit 4, and a communication unit 5. The input terminal of the power supply unit 1 is used to connect to a power supply device, and the output terminal of the power supply unit 1 is connected to the power supply terminals of the control unit 2, the mode switching unit 3, the water gun pressure adjustment unit 4, and the communication unit 5, respectively. The output terminals of the mode switching unit 3 and the water gun pressure adjustment unit 4 are respectively connected to the control input terminal of the control unit 2. The control unit 2 interacts with external devices or the high-pressure cleaning truck through the communication unit 5.

[0032] This application discloses a control circuit for a high-pressure cleaning truck remote control. First, the water pressure of the high-pressure cleaning truck is electronically adjusted through a water gun pressure regulating unit, replacing manual throttle operation and improving the stability and accuracy of water pressure control. Second, the high-pressure cleaning truck is wirelessly remotely controlled through a communication unit 5, eliminating physical isolation barriers, reducing command transmission delays, and overcoming cable length limitations, thus expanding the operating range. Third, the high-pressure cleaning truck can quickly switch to multiple preset working modes through a mode switching unit 3, meeting the needs of different operating scenarios without frequent manual adjustments, improving work efficiency and ease of operation.

[0033] Further, please refer to Figure 1 and Figure 3 The power supply unit 1 includes a power input section 11, a boost section 12, and a voltage regulator section 13. The input terminal of the power input section 11 is used to connect to the power supply device. The output terminal of the power input section 11 is connected to the input terminal of the boost section 12. The output terminal of the boost section 12 is connected to the input terminal of the voltage regulator section 13 and the power supply terminal of the mode switching unit 3. The output terminal of the voltage regulator section 13 is connected to the power supply terminal of the control unit 2, the power supply terminal of the water gun pressure adjustment unit 4, and the power supply terminal of the communication unit 5.

[0034] In this embodiment, the power input section 11 includes a fourteenth connector CN14; the boost section 12 includes an eleventh control chip U11, model HFP6291LR-G1. The boost section 12 widens the effective operating voltage range of the battery, ensuring that the output voltage meets the minimum operating voltage requirements of other components, such as the display screen, thus ensuring a constant voltage in subsequent circuits and stable operation of the entire control circuit. The voltage regulator section 13 includes a tenth control chip U10, model AMS1117-3.3. The voltage regulator section 13 provides a stable 3.3V power supply to sensitive components such as the control unit 2, eliminating voltage drops caused by battery voltage fluctuations or load changes. Fluctuations are prevented to ensure that all components operate under a stable voltage environment, thereby improving the reliability and stability of the control circuit. Pin 1 of the fourteenth connector CN14 is used to connect to the power supply device, which is a battery pack installed in the remote control. Pin VIN of the eleventh control chip U11 is connected to pin 1 of the fourteenth connector CN14. Pin SW of the eleventh control chip U11 is used to output 5V voltage and is connected to pin VIN of the tenth control chip U10. Pin VOUT of the tenth control chip U10 is used to output 3.3V DC voltage and is connected to the power supply terminals of the control unit 2, the water gun pressure adjustment unit 4, and the communication unit 5, respectively.

[0035] Further, please refer to Figure 1 and Figure 3 The power supply unit 1 further includes a power detection unit 14, the input terminal of which is connected to the output terminal of the power input unit 11, and the output terminal of which is connected to the detection input terminal of the control unit 2.

[0036] In this embodiment, please refer to Figure 3 The power detection unit 14 includes a forty-eighth resistor R48, a fiftieth resistor R50, and a forty-ninth resistor R49. One end of the forty-eighth resistor R48 is connected to pin 1 of the fourteenth connector CN14, and the other end of the forty-eighth resistor R48 is connected to one end of the fiftieth resistor R50 and one end of the forty-ninth resistor R48. The other end of the fiftieth resistor R50 is connected to the detection input terminal of the control unit 2, and the other end of the forty-ninth resistor R49 is grounded. By dividing the voltage through the forty-eighth resistor R48, the fiftieth resistor R50, and the forty-ninth resistor R49, the battery voltage is input to the ADC2_IN2 pin of the first control chip U1 to realize power monitoring.

[0037] In this embodiment, by setting up a power detection unit 14, the remaining usage time of the remote control can be predicted. When the remaining time is less than 2 hours, the user is notified to avoid the remote control losing power during operation. In addition, by collecting the battery voltage in real time through the power detection unit 14 and combining it with a preset threshold, such as a 3.3V critical value, the display module can be prevented from stopping due to insufficient voltage, ensuring the normal display of the human-machine interface.

[0038] Further, please refer to Figure 1 and Figure 2 The control unit 2 includes a control unit 21 and a filter unit 22. The input terminal of the filter unit 22 is connected to the output terminal of the power supply unit 1, and the output terminal of the filter unit 22 is connected to the power supply terminal of the control unit 21. The output terminal of the mode switching unit 3 and the output terminal of the water gun pressure adjustment unit 4 are electrically connected to the control input terminal of the control unit 21, respectively.

[0039] In this embodiment, please refer to Figure 1 The control unit 21 includes a first control chip U1, which is an STM32F407VET6; the filtering unit 22 includes a second control chip U2, which is also an STM32F407VET6. The STM32F407VET6 chip has a high-performance ARM Cortex-M4 core and supports floating-point operations and DSP instructions. Since there are a large number of capacitors near the power supply pins of the first control chip U1, the high-frequency noise of the power supply can be filtered out by setting the filtering unit 22, thus ensuring the integrity of the input signal.

[0040] In this embodiment, pins 65, 66, 68, and 69 of the first control chip U1 are respectively connected to the wireless communication unit 51; pins 30, 32, 33, and 34 of the first control chip U1 are respectively connected to the display control unit 21; pin 24 of the first control chip U1 is connected to the water gun pressure adjustment unit 4; pin 25 of the first control chip U1 is connected to the power detection unit 14; the PC, PE, and PD pins of the first control chip U1 can be used to connect multiple connection groups; the PE, PD, PB, and PC pins of the first control chip U1 can be used to connect multiple indicator light control groups; and pin 36 of the first control chip U1 is connected to the emergency stop unit 6.

[0041] Further, please refer to Figure 1 and Figure 4 The communication unit 5 includes a wireless communication unit 51 and a screen control unit 52. The signal interaction terminal of the wireless communication unit 51 is connected to the wireless signal interaction terminal of the control unit 2; the signal interaction terminal of the screen control unit 52 is connected to the screen signal interaction terminal of the control unit 2. The wireless communication unit 51 is used to realize the wireless communication connection between the control unit 2 and external equipment or high-pressure cleaning vehicle, and the screen control unit 52 is used to realize the information interaction between the control unit 2 and the display screen on the controller.

[0042] In this embodiment, please refer to Figure 4 The wireless communication unit 51 includes a fifth control chip U5, which is an LC12S wireless module. This module enables stable and high-speed wireless communication between the control unit 2 and external devices or a high-pressure cleaning vehicle, improving the communication efficiency and flexibility of the equipment. The screen control unit 52 includes a ribbon cable interface P3, which connects to the display screen on the remote control. This interface supports high-speed data transmission, ensuring smooth and accurate information interaction between the control unit 2 and the display screen, thus enhancing the user experience. Pins PA9 and PA10 of the first control chip U1 are connected to pins RXD and TXD of the fifth control chip U5. Pins PC8 and PC9 of the first control chip U1 are connected to pins SET and CS of the fifth control chip U5, used to control the configuration and chip selection of the wireless module, enabling wireless data transmission. Pins PA7, PA5, PA6, PC0, and PC1 of the first control chip U1 are connected to the FPC screen ribbon cable, i.e., the ribbon cable interface P3, supporting high-speed data transmission.

[0043] Further, please refer to Figure 1 and Figure 5The water gun pressure adjustment unit 4 includes a potentiometer connection part 41 and a pressure divider part 42. The input end of the pressure divider part 42 is connected to the output end of the power supply unit 1, the output end of the pressure divider part 42 is connected to the power supply end of the potentiometer connection part 41, and the output end of the potentiometer connection part 41 is connected to the control input end of the control unit 2.

[0044] In this embodiment, please refer to Figure 5 The potentiometer connection part 41 includes a fifteenth connector CN15, and the voltage divider part 42 includes a forty-seventh resistor R47 and a ninth control chip U9. The signal of the ninth control chip U9 is TL431AIDBZR. One end of the forty-seventh resistor R47 is connected to the output terminal of the power supply unit 1. The other end of the forty-seventh resistor R47 and pins 1 and 2 of the ninth control chip U9 are respectively connected to pin 1 of the fifteenth connector CN15. Pin 2 of the fifteenth connector CN15 is connected to pin PA1 of the first control chip U1. The ninth control chip U9 provides a 2.5V reference voltage, which is input to pin PA1 of the first control chip U1 for voltage division sampling. An external potentiometer can be connected through the fifteenth connector CN15, and after voltage division, it is input to the first control chip U1 to realize the acquisition of analog signals, such as voltage and angle signals.

[0045] In actual operation, analog signals can be output through the knob on the remote control to achieve continuous adjustment of the pressure of the high-pressure water gun; the first control chip U1 specifically converts the change of the physical position of the potentiometer into a PTO control signal and sends it to the on-board PLC system of the high-pressure cleaning truck to drive the adjustment of engine speed and water pump power.

[0046] For further information, please refer to [link / reference]. Figure 1 and Figure 6 The mode switching unit 3 includes multiple button sections 31, and the multiple button sections 31 have the same structure. Each button section 31 includes a connection group, a pull-up group, and an indicator light control group. The connection group is used to connect the button and the indicator light. The output end of the connection group is connected to the pull-up group and the control input end of the control unit 2. The input end of the indicator light control group is connected to the control output end of the control unit 2, and the output end of the indicator light control group is connected to the input end of the connection group.

[0047] In this embodiment, the mode switching unit 3 includes twelve buttons, i.e., the remote control is equipped with twelve waterproof industrial buttons. Each button has a specific function and is responsible for sending switching commands. Specifically, the waterproof industrial buttons cover a variety of control functions, including but not limited to power take-off switch control, water gun switch control, and equipment mode switching. Power take-off switch control allows the operator to start or stop the power take-off unit of the equipment as needed, while water gun switch control involves turning the water gun on and off, which is particularly important for cleaning operations. The equipment mode switching function allows the user to select between different working modes to adapt to different operational needs. In addition, the mode switching unit 3 also integrates an LED display function. The on / off state of the LEDs can clearly indicate the on / off state of each button, so that the operator can understand the current working status of the equipment at a glance, which not only improves the intuitiveness of operation but also enhances the safety of operation.

[0048] In this embodiment, taking a button section 31 as an example, please refer to... Figure 6 The connection group includes a first connector CN1 for connecting to the I / O button and the button indicator light; the pull-up group includes a fourth resistor R4 and a fifty-sixth capacitor C56, wherein the fourth resistor R4 acts as a pull-up resistor, normally pulling the relevant pin to a high level; when the button is pressed, the pin is grounded, forming a low-level signal, which is detected by the first control chip U1 and triggers a corresponding operation; the indicator light control group includes a thirty-fifth resistor R35, a twenty-third resistor R23, and a first transistor Q1, wherein the thirty-fifth resistor R35 acts as a current limiting resistor. The first control chip U1 has a high-level resistor connected to pin PC7 to control the current flowing through the indicator light circuit. The other end of the thirty-fifth resistor R35 is connected to one end of the twenty-third resistor R23 and the base of the first transistor Q1 to form a base drive circuit. The first transistor Q1 is used as a switch here, with its emitter grounded and its collector connected to pin 3 of the first connector CN1 to control the indicator light's on / off state. When the first control chip U1 outputs a high level through pin PC7, the first transistor Q1 is turned on and the indicator light is lit; otherwise, the indicator light is turned off.

[0049] Further, please refer to Figure 1 and Figure 7 The control circuit also includes an emergency stop unit 6, the output of which is connected to the control input of the control unit 2.

[0050] In this embodiment, please refer to Figure 7The emergency stop unit 6 includes a thirteenth connector CN13 for connecting to the emergency stop button. The thirteenth connector CN13 is connected to pin PB1 of the first control chip U1 through a pull-up resistor. By setting the pull-up resistor, the relevant pin is normally pulled to a high level. When the button is pressed, the pin is grounded, forming a low-level signal. This signal is detected by the first control chip U1 and triggers a corresponding operation.

[0051] In this embodiment, an emergency stop mechanism, namely emergency stop unit 6, is introduced to deal with emergency situations, realizing an immediate response to the safe shutdown of the high-pressure cleaning truck. The emergency stop button on the remote control corresponding to emergency stop unit 6 has the highest level of interrupt priority. Once activated, the on-board PLC of the high-pressure cleaning truck will quickly execute the shutdown operation of the power take-off device and reduce the engine speed to zero in stages within a short period of time to ensure the safety of the high-pressure cleaning truck and the safety of the operators.

[0052] This utility model also provides a PCB board, characterized in that the PCB board is printed with the control circuit of the high-pressure cleaning vehicle remote control as described above.

[0053] This utility model also provides a high-pressure cleaning truck remote control, which uses the control circuit of any of the high-pressure cleaning truck remote controls described above to achieve operation control.

[0054] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A control circuit for a high-pressure cleaning truck remote control, characterized in that, It includes a power supply unit, a control unit, a mode switching unit, a water gun pressure adjustment unit, and a communication unit. The input terminal of the power supply unit is used to connect to a power supply device, and the output terminal of the power supply unit is connected to the power supply terminals of the control unit, the mode switching unit, the water gun pressure adjustment unit, and the communication unit, respectively. The output terminals of the mode switching unit and the water gun pressure adjustment unit are respectively connected to the control input terminal of the control unit. The control unit interacts with external devices or high-pressure cleaning vehicles through the communication unit.

2. The control circuit according to claim 1, characterized in that, The power supply unit includes a power input section, a boost section, and a voltage regulator section. The input terminal of the power input section is used to connect to the power supply device. The output terminal of the power input section is connected to the input terminal of the boost section. The output terminal of the boost section is connected to the input terminal of the voltage regulator section and the power supply terminal of the mode switching unit. The output terminal of the voltage regulator section is connected to the power supply terminal of the control unit, the power supply terminal of the water gun pressure adjustment unit, and the power supply terminal of the communication unit.

3. The control circuit according to claim 2, characterized in that, The power supply unit also includes a power detection unit, the input terminal of which is connected to the output terminal of the power input unit, and the output terminal of which is connected to the detection input terminal of the control unit.

4. The control circuit according to claim 1, characterized in that, The control unit includes a control unit and a filter unit. The input terminal of the filter unit is connected to the output terminal of the power supply unit, and the output terminal of the filter unit is connected to the power supply terminal of the control unit. The output terminals of the mode switching unit and the water gun pressure adjustment unit are electrically connected to the control input terminal of the control unit, respectively.

5. The control circuit according to claim 1, characterized in that, The communication unit includes a wireless communication unit and a screen control unit. The signal interaction terminal of the wireless communication unit is connected to the wireless signal interaction terminal of the control unit; the signal interaction terminal of the screen control unit is connected to the screen signal interaction terminal of the control unit; the wireless communication unit is used to realize wireless communication connection between the control unit and external equipment or high-pressure cleaning vehicle, and the screen control unit is used to realize information interaction between the control unit and the display screen on the controller.

6. The control circuit according to claim 1, characterized in that, The water gun pressure adjustment unit includes a potentiometer connection part and a pressure dividing part. The input end of the pressure dividing part is connected to the output end of the power supply unit, the output end of the pressure dividing part is connected to the power supply end of the potentiometer connection part, and the output end of the potentiometer connection part is connected to the control input end of the control unit.

7. The control circuit according to claim 1, characterized in that, The mode switching unit includes multiple button sections, all of which have the same structure. Each button section includes a connection group, a pull-up group, and an indicator light control group. The connection group is used to connect the buttons and the indicator lights. The output of the connection group is connected to the pull-up group and the control input of the control unit. The input of the indicator light control group is connected to the control output of the control unit, and the output of the indicator light control group is connected to the input of the connection group.

8. The control circuit according to claim 1, characterized in that, It also includes an emergency stop unit, the output of which is connected to the control input of the control unit.

9. A PCB board, characterized in that, The PCB board is printed with the control circuit of the high-pressure cleaning truck remote control as described in any one of claims 1-8.

10. A remote control for a high-pressure cleaning truck, characterized in that, The high-pressure cleaning truck remote control uses the control circuit of the high-pressure cleaning truck remote control as described in any one of claims 1-8 to achieve working control.

Images