Cleaning system for photovoltaic panel between railway tracks

Abstract

The utility model discloses a cleaning system for photovoltaic panels between railway tracks, and relates to the field of photovoltaic technology, the cleaning system comprises a plurality of photovoltaic panel columns connected in sequence, each photovoltaic panel column comprises a plurality of photovoltaic panels connected in sequence, the plurality of photovoltaic panel columns are arranged between tracks on two sides of a railway, and each photovoltaic panel column is provided with a signal sending module; the spraying device is arranged on the bottom side of the middle or the tail of the train, the signal receiving module is arranged on the bottom side of the head of the train, a main control chip is arranged on the spraying device, and the main control chip is connected with the signal receiving module, the second communication module and the spraying control module; the master control system is wirelessly connected with the second communication module through the first communication module. The plurality of photovoltaic panel columns are arranged between the tracks on the two sides of the railway so as to effectively utilize the long and narrow railway track space, then the spraying device is arranged at the bottom of the train, the plurality of photovoltaic panel columns are cleaned regularly, automatic cleaning is achieved, and the manual cleaning cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field especially relates to a railway track interval photovoltaic board's cleaning system. BACKGROUND

[0002] The current railway mileage of our country reaches 159 thousand kilometers, and the daily operation of train needs a large amount of energy supply.

[0003] At present, photovoltaic is not much used in railway industry, only sets up roof photovoltaic in part station and produces power generation benefit, but as the strip long distance railway land range, because narrow space, available space is not much, has not yet fully developed clean energy.

[0004] And if the dust accumulates on the photovoltaic board after setting up photovoltaic board, then will influence the power generation of photovoltaic board.So need to clean the dust on photovoltaic board regularly.If using manual cleaning, then will greatly increase the manual cleaning cost. CONTENT OF UTILITY MODEL

[0005] The utility model discloses a kind of railway track interval photovoltaic board's cleaning system, set up multiple photovoltaic board columns between the track of railway two sides, and photovoltaic board column includes multiple photovoltaic boards connected in sequence, to effectively utilize long and narrow railway track space, then set up spraying device at train bottom, for regularly cleaning multiple photovoltaic board columns, to realize automatic cleaning, save manual cleaning cost.

[0006] To solve the above technical problem, the utility model uses the following technical scheme:

[0007] The utility model embodiment provides a kind of cleaning system of photovoltaic panel between railway track, the cleaning system includes: multiple photovoltaic panel rows connected in turn, the photovoltaic panel row includes multiple photovoltaic panels connected in turn, the multiple photovoltaic panel rows are arranged between the track of railway two sides, signal sending module is all provided on the photovoltaic panel row;Spraying device and signal receiving module, the spraying device is arranged at the bottom side of train middle part or tail, the signal receiving module is arranged at the bottom side of train head, main control chip, second communication module and spraying control module are provided on the spraying device, the main control chip is connected the signal receiving module, the second communication module and the spraying control module respectively;Total control system and first communication module, the total control system is wirelessly connected the second communication module by the first communication module;When photovoltaic panel row needs to spray, the total control system sends the spraying preparation instruction to main control chip by first communication module and second communication module, when main control chip receives the signal sent by signal sending module and spraying preparation instruction in turn, then the main control chip controls spraying control module to work, spraying device sprays to photovoltaic panel row, when main control chip receives the signal sent by signal sending module of next photovoltaic panel row, then the main control chip controls spraying control module to stop working.

[0008] In some embodiments, the signal receiving module includes a signal receiving tube, a first-stage amplification circuit and a second-stage amplification circuit, the signal receiving tube is used to receive the signal sent by the signal sending module, convert the signal sent by the signal sending module into an electrical signal, and output the amplified electrical signal to the main control chip through the first-stage amplification circuit and the second-stage amplification circuit in turn.

[0009] In some embodiments, the first-stage amplification circuit includes a first PNP transistor and a first resistor, the base of the first PNP transistor is connected to the input end of the signal receiving tube, the output end of the signal receiving tube is grounded, the emitter of the first PNP transistor is connected to a power supply, the collector of the first PNP transistor is connected to one end of the first resistor, and the other end of the first resistor is grounded; the second-stage amplification circuit includes a first NPN transistor, a second resistor and a third resistor, the base of the first NPN transistor is connected to the collector of the first PNP transistor, the collector of the first NPN transistor is connected to one end of the second resistor and the main control chip, the other end of the second resistor is connected to a power supply, and the emitter of the first NPN transistor is grounded through the third resistor.

[0010] In some embodiments, the spray control module comprises a relay, a water pump, a second NPN triode, a second PNP triode, a fourth resistor, a fifth resistor and a sixth resistor, one end of the coil end of the relay is connected to a power supply, the other end of the coil end of the relay is connected to one end of the fifth resistor and one end of the sixth resistor, the other end of the fifth resistor is connected to the emitter of the second PNP triode, the other end of the sixth resistor is connected to the base of the second PNP triode and the collector of the second NPN triode, the collector of the second PNP triode is connected to the base of the second NPN triode and one end of the fourth resistor, the other end of the fourth resistor is connected to the master control chip, the emitter of the second NPN triode is grounded, one end of the contactor of the relay is connected to a live wire, the other end of the contactor of the relay is connected to the first electrode of the water pump, and the second electrode of the water pump is connected to a zero line.

[0011] In some embodiments, the spray control module further comprises a seventh resistor and a third PNP triode, the base of the third PNP triode is connected to one end of the seventh resistor, the other end of the seventh resistor is connected to the master control chip, the emitter of the third PNP triode is connected to the base of the second NPN triode, and the collector of the third PNP triode is grounded.

[0012] In some embodiments, the spray control module further comprises a first optocoupler and a second optocoupler, the input end of the light-emitting end of the first optocoupler is connected to the master control chip, the output end of the light-emitting end of the first optocoupler is grounded, the input end of the light-receiving end of the first optocoupler is connected to a power supply, and the output end of the light-receiving end of the first optocoupler is connected to the other end of the fourth resistor; the input end of the light-emitting end of the second optocoupler is connected to the master control chip, the output end of the light-emitting end of the second optocoupler is grounded, the input end of the light-receiving end of the second optocoupler is connected to the other end of the seventh resistor, and the output end of the light-receiving end of the second optocoupler is grounded.

[0013] In some embodiments, the spray control module further comprises a first diode, the negative electrode of the first diode is connected to one end of the coil end of the relay, and the positive electrode of the first diode is connected to the other end of the coil end of the relay.

[0014] In some embodiments, the spray control module further comprises a PMOS tube, a solenoid valve and an eighth resistor, the gate of the PMOS tube is connected to the collector of the second NPN triode, the source of the PMOS tube is connected to a power supply, the drain of the PMOS tube is connected to the first electrode of the solenoid valve, and the second electrode of the solenoid valve is grounded through the eighth resistor.

[0015] In some embodiments, the spray control module further comprises a second diode, a negative electrode of the second diode being connected to the first electrode of the electromagnetic valve, and a positive electrode of the second diode being connected to the second electrode of the electromagnetic valve.

[0016] The cleaning system of the photovoltaic panel between railway tracks according to the embodiment of the present application has at least the following beneficial effects: the photovoltaic panel rows are arranged between the tracks on both sides of the railway, and the photovoltaic panel row comprises a plurality of photovoltaic panels connected in sequence, so as to effectively utilize the long and narrow railway track space; then the spraying device is arranged at the bottom of the train, and is used for regularly cleaning the plurality of photovoltaic panel rows, so as to realize automatic cleaning, improve the cleaning speed, and save the labor cleaning cost.

[0017] It should be understood that the foregoing general description and the following detailed description are only examples and are not limiting the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a cross-sectional structure schematic diagram of the railway track and the photovoltaic panel according to the embodiment;

[0020] Figure 2 It is a circuit principle diagram of the signal receiving module according to the embodiment;

[0021] Figure 3 It is a circuit principle diagram of the spray control module according to the embodiment.

[0022] The signs are explained as follows: 1, photovoltaic panel; 2, track; 3, spraying device. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0024] In the description of the utility model, it needs to be understood that the directions or position relations indicated by the terms "upper", "lower", "left", "right", "vertical", "top", "bottom" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and thus cannot be understood as limiting the utility model.

[0025] The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0026] In the description of the utility model, it needs to be explained that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations, however, can be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these example implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive aspects of the example implementations to those skilled in the art. The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated into and constitute a part of this disclosure. Like reference numerals in the drawings represent like or similar elements, and thus their repeated description will be omitted.

[0028] The technical solutions of the embodiments of the present application will be described briefly as follows:

[0029] According to some embodiments, the present application provides a cleaning system for photovoltaic panels between railway tracks, the connection structure of the cleaning system is as follows, comprising:

[0030] A plurality of photovoltaic panel rows connected in sequence along the railway direction, the photovoltaic panel row comprises a plurality of photovoltaic panels 1 connected in sequence along the railway direction, as shown in Figure 1 All photovoltaic panel rows are arranged between the tracks 2 on both sides of the railway, and a signal sending module is arranged on each photovoltaic panel row;

[0031] The spraying device 3 is arranged at the bottom side of the middle or tail of the train, and the signal receiving module is arranged at the bottom side of the head of the train.

[0032] The total control system and the first communication module, the total control system is wirelessly connected to the second communication module through the first communication module, and the total control system remotely controls the spraying device 3 to work through the first communication module and the second communication module.

[0033] The working principle of the above embodiment is that the total control system records the cleaning time of each photovoltaic panel column, and when one of the photovoltaic panel columns reaches the set time without cleaning, the total control system marks it as a photovoltaic panel column to be cleaned. When a train is approaching the photovoltaic panel column to be cleaned, the total control system sends a spraying preparation instruction to the main control chip through the first communication module and the second communication module. Then, when the head of the train travels to the upper end of the signal sending module, the signal receiving module receives the signal sent by the signal sending module and transmits it to the main control chip. When the main control chip receives the spraying preparation instruction and the signal sent by the signal sending module, the main control chip controls the spraying control module to work, and the spraying device 3 sprays and cleans the photovoltaic panel column. When the main control chip receives the signal sent by the signal sending module of the next photovoltaic panel column through the signal receiving module, the main control chip controls the spraying control module to stop working to complete the cleaning of one photovoltaic panel column.

[0034] The following describes the preferred embodiments of the present disclosure in further detail in conjunction with the accompanying drawings of the present specification. Figures 1 to 3 The preferred embodiments of the present disclosure are further described in detail.

[0035] According to some embodiments, the signal receiving module includes a signal receiving tube DP, a first-stage amplification circuit and a second-stage amplification circuit. The signal receiving tube DP is used to receive the signal sent by the signal sending module, convert the signal sent by the signal sending module into an electrical signal, and output the electrical signal to the main control chip after being amplified by the first-stage amplification circuit and the second-stage amplification circuit in sequence.

[0036] Further, as shown in the figure, Figure 2 The first-stage amplification circuit includes a first PNP transistor QP1 and a first resistor R1, and the specific connection structure is as follows,

[0037] The base of the first PNP transistor QP1 is connected to the input end of the signal receiving tube DP, the output end of the signal receiving tube DP is grounded, the emitter of the first PNP transistor QP1 is connected to the power supply, and the collector of the first PNP transistor QP1 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is grounded.

[0038] The second-stage amplification circuit comprises a first NPN transistor QN1, a second resistor R2 and a third resistor R3, and the specific connection structure is as follows,

[0039] The base of the first NPN transistor QN1 is connected to the collector of the first PNP transistor QP1, the collector of the first NPN transistor QN1 is connected to one end of the second resistor R2 and the main control chip, the other end of the second resistor R2 is connected to the power supply, and the emitter of the first NPN transistor QN1 is grounded through the third resistor R3.

[0040] The working principle of the above embodiment is that the signal sending module sends an infrared light signal, the infrared light signal sent by the signal sending module is set to be vertically upward, and the receiving direction of the signal receiving tube DP is also set to be vertically downward. When the signal receiving tube DP receives the infrared light signal sent by the signal sending module, the signal receiving tube DP is turned on, the first PNP transistor QP1 performs first signal amplification output, the first NPN transistor QN1 performs second signal amplification output, and then the main control chip detects that the electrical signal changes from high level to low level through the collector of the first NPN transistor QN1, and the main control chip determines that the signal receiving module receives the signal sent by the signal sending module.

[0041] According to some embodiments, as shown in Figure 3 The spraying control module comprises a relay K, a water spraying pump M, a second NPN transistor QN1, a second PNP transistor QP2, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, and the specific connection structure is as follows,

[0042] One end of the coil end of the relay K is connected to the power supply, the other end of the coil end of the relay K is connected to one end of the fifth resistor R5 and one end of the sixth resistor R6, the other end of the fifth resistor R5 is connected to the emitter of the second PNP transistor QP2, the other end of the sixth resistor R6 is connected to the base of the second PNP transistor QP2 and the collector of the second NPN transistor QN2, the collector of the second PNP transistor QP2 is connected to the base of the second NPN transistor QN2 and one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to the main control chip, the emitter of the second NPN transistor QN2 is grounded, one end of the contactor of the relay K is connected to the live wire, the other end of the contactor of the relay K is connected to the first electrode of the water spraying pump M, and the second electrode of the water spraying pump M is connected to the zero line.

[0043] The working principle of the above embodiment is that when the main control chip receives the signal sent by the signal sending module after receiving the spraying preparation instruction, the first control signal of a high level is output to the base of the second NPN transistor QN2 for a short time, the second NPN transistor QN2 is turned on, the second PNP transistor QP2 is turned on, the second NPN transistor QN2 and the second PNP transistor QP2 are interlocked to be continuously turned on, the coil end of the relay K is electrified to attract the contactor, the water spraying pump M works, and the photovoltaic panel column is sprayed and cleaned.

[0044] Further, as shown in Figure 3 The spraying control module further includes a first diode D1, a negative electrode of the first diode D1 is connected to one end of the coil end of the relay K, and a positive electrode of the first diode D1 is connected to the other end of the coil end of the relay K. The first diode D1 is used to continue to flow the coil of the relay K when the relay K is turned off.

[0045] According to some embodiments, as shown in Figure 3 The spraying control module further includes a seventh resistor R7 and a third PNP transistor QP3, and the specific connection structure is as follows,

[0046] The base of the third PNP transistor QP3 is connected to one end of the seventh resistor R7, the other end of the seventh resistor R7 is connected to the main control chip, the emitter of the third PNP transistor QP3 is connected to the base of the second NPN transistor QN2, and the collector of the third PNP transistor QP3 is grounded.

[0047] The working principle of the above embodiment is that when the main control chip receives the signal sent by the signal sending module of the next photovoltaic panel column through the signal receiving module, the second control signal of a high level is output to the base of the third PNP transistor QP3 for a short time, the third PNP transistor QP3 is turned on for a short time, the second NPN transistor QN2 is turned off, and the second PNP transistor QP3 is turned off to control the spraying control module to stop working, and the cleaning of one photovoltaic panel column is completed.

[0048] According to some embodiments, as shown in Figure 3 The spraying control module further includes a first optocoupler U1 and a second optocoupler U2, and the specific connection structure is as follows,

[0049] The input end of the light emitting end of the first optocoupler U1 is connected to the main control chip, the output end of the light emitting end of the first optocoupler U1 is grounded, the input end of the light receiving end of the first optocoupler U1 is connected to the power supply, and the output end of the light receiving end of the first optocoupler U1 is connected to the other end of the fourth resistor R4.

[0050] The input end of the light emitting end of the second optocoupler U2 is connected to the main control chip, the output end of the light emitting end of the second optocoupler U2 is grounded, the input end of the light receiving end of the second optocoupler U2 is connected to the other end of the seventh resistor R7, and the output end of the light receiving end of the second optocoupler U2 is grounded.

[0051] Wherein, the first optocoupler U1 and the second optocoupler U2 are arranged between the base of the second NPN transistor QN2 and the master control chip and between the base of the third PNP transistor QP3 and the master control chip respectively to play an isolating role, thereby protecting the master control chip to a certain extent.

[0052] According to some embodiments, as shown in Figure 3 The spray control module further comprises a PMOS tube PM, a solenoid valve and an eighth resistor R8, and the specific connection structure is as follows,

[0053] The gate of the PMOS tube PM is connected to the collector of the second NPN transistor QN2, the source of the PMOS tube PM is connected to the power supply, the drain of the PMOS tube PM is connected to the first electrode of the solenoid valve, and the second electrode of the solenoid valve is connected to the ground through the eighth resistor R8.

[0054] The working principle of the above-mentioned embodiments is as follows: when the master control chip receives the signal sent by the signal sending module after receiving the spray preparation instruction, the first control signal with a high level is temporarily output to the base of the second NPN transistor QN2, the second NPN transistor QN2 is turned on, the second PNP transistor QP2 is turned on, the second NPN transistor QN2 and the second PNP transistor QP2 are interlocked to be continuously turned on, the coil end of the relay K is electrified to attract the contactor, and the water spray pump M works; at the same time, the PMOS tube PM is turned on, the solenoid valve is opened, and the spray device 3 sprays and cleans the photovoltaic panel column.

[0055] Further, as shown in Figure 3 The spray control module further comprises a second diode D2, the negative electrode of the second diode D2 is connected to the first electrode of the solenoid valve, and the positive electrode of the second diode D2 is connected to the second electrode of the solenoid valve. Wherein, the second diode D2 is used to perform freewheeling on the inductive element inside the solenoid valve when the solenoid valve is turned off.

[0056] In the description of the above-mentioned embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0057] Although the present disclosure has been described with reference to several exemplary embodiments, it will be understood that the terms used are illustrative and not restrictive, and the present disclosure is not limited to any of the aforementioned details. Since the present disclosure can be embodied in various forms without departing from the spirit or essential characteristics thereof, it should be understood that the above-described embodiments are not limited to the details thereof but are to be interpreted broadly within the scope and spirit of the appended claims, and all changes and modifications that fall within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A system for cleaning photovoltaic panels between railway tracks, characterized in that, The cleaning system comprises: A plurality of photovoltaic panel rows connected in sequence, the photovoltaic panel row comprising a plurality of photovoltaic panels connected in sequence, the plurality of photovoltaic panel rows being arranged between the tracks on both sides of the railway, and the photovoltaic panel row being provided with a signal sending module; A spraying device and a signal receiving module, the spraying device being arranged at the bottom side of the middle or tail of the train, the signal receiving module being arranged at the bottom side of the head of the train, the spraying device being provided with a main control chip, a second communication module and a spraying control module, and the main control chip being connected with the signal receiving module, the second communication module and the spraying control module respectively; A general control system and a first communication module, the general control system being wirelessly connected with the second communication module through the first communication module; When the photovoltaic panel row needs to be sprayed, the general control system sends a spraying preparation instruction to the main control chip through the first communication module and the second communication module, when the main control chip receives the spraying preparation instruction and the signal sent by the signal sending module in sequence, the main control chip controls the spraying control module to work, and the spraying device sprays the photovoltaic panel row, when the main control chip receives the signal sent by the signal sending module of the next photovoltaic panel row, the main control chip controls the spraying control module to stop working.

2. The cleaning system of claim 1, wherein, The signal receiving module comprises a signal receiving tube, a first-stage amplification circuit and a second-stage amplification circuit, the signal receiving tube is used for receiving the signal sent by the signal sending module, converting the signal sent by the signal sending module into an electric signal, and outputting the electric signal to the main control chip through the first-stage amplification circuit and the second-stage amplification circuit in sequence after amplification.

3. The cleaning system of claim 2, wherein, The first-stage amplification circuit comprises a first PNP transistor and a first resistor, the base of the first PNP transistor is connected with the input end of the signal receiving tube, the output end of the signal receiving tube is grounded, the emitter of the first PNP transistor is connected with a power supply, the collector of the first PNP transistor is connected with one end of the first resistor, and the other end of the first resistor is grounded; The second-stage amplification circuit comprises a first NPN transistor, a second resistor and a third resistor, the base of the first NPN transistor is connected with the collector of the first PNP transistor, the collector of the first NPN transistor is connected with one end of the second resistor and the main control chip, the other end of the second resistor is connected with a power supply, and the emitter of the first NPN transistor is grounded through the third resistor.

4. The cleaning system of claim 1, wherein, The spray control module comprises a relay, a water spraying pump, a second NPN triode, a second PNP triode, a fourth resistor, a fifth resistor and a sixth resistor, one end of the coil end of the relay is connected with a power supply, the other end of the coil end of the relay is connected with one end of the fifth resistor and one end of the sixth resistor, the other end of the fifth resistor is connected with the emitter of the second PNP triode, the other end of the sixth resistor is connected with the base of the second PNP triode and the collector of the second NPN triode, the collector of the second PNP triode is connected with the base of the second NPN triode and one end of the fourth resistor, the other end of the fourth resistor is connected with the master control chip, the emitter of the second NPN triode is grounded, one end of the contactor of the relay is connected with a live wire, the other end of the contactor of the relay is connected with the first electrode of the water spraying pump, and the second electrode of the water spraying pump is connected with a zero line.

5. The cleaning system of claim 4, wherein, The spray control module further comprises a seventh resistor and a third PNP triode, the base of the third PNP triode is connected with one end of the seventh resistor, the other end of the seventh resistor is connected with the master control chip, the emitter of the third PNP triode is connected with the base of the second NPN triode, and the collector of the third PNP triode is grounded.

6. The cleaning system of claim 5, wherein, The spray control module further comprises a first optocoupler and a second optocoupler, the input end of the light-emitting end of the first optocoupler is connected with the master control chip, the output end of the light-emitting end of the first optocoupler is grounded, the input end of the light-receiving end of the first optocoupler is connected with a power supply, and the output end of the light-receiving end of the first optocoupler is connected with the other end of the fourth resistor; the input end of the light-emitting end of the second optocoupler is connected with the master control chip, the output end of the light-emitting end of the second optocoupler is grounded, the input end of the light-receiving end of the second optocoupler is connected with the other end of the seventh resistor, and the output end of the light-receiving end of the second optocoupler is grounded.

7. The cleaning system of claim 4, wherein, The spray control module further comprises a first diode, the negative electrode of the first diode is connected with one end of the coil end of the relay, and the positive electrode of the first diode is connected with the other end of the coil end of the relay.

8. The cleaning system of claim 4, wherein, The spray control module further comprises a PMOS tube, a solenoid valve and an eighth resistor, the gate of the PMOS tube is connected with the collector of the second NPN triode, the source of the PMOS tube is connected with a power supply, the drain of the PMOS tube is connected with the first electrode of the solenoid valve, and the second electrode of the solenoid valve is grounded through the eighth resistor.

9. The cleaning system of claim 8, wherein, The spray control module further comprises a second diode, the negative electrode of the second diode is connected with the first electrode of the solenoid valve, and the positive electrode of the second diode is connected with the second electrode of the solenoid valve.

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