CN220020152U

CN220020152U - Top dust removal controller

Info

Publication number: CN220020152U
Application number: CN202322588066.4U
Authority: CN
Inventors: 杨青杰; 赵炳乾
Original assignee: HENAN QIANHE AUTOMATION TECHNOLOGY CO LTD
Current assignee: HENAN QIANHE AUTOMATION TECHNOLOGY CO LTD
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2023-11-14
Anticipated expiration: 2033-09-22

Abstract

The utility model discloses a dust removal controller for a cabin roof, which comprises a shell, wherein a touch screen is arranged on a front panel of the shell, a circuit board is arranged in the shell, the circuit board comprises a singlechip and a local communication module, the touch screen and the local communication module are electrically connected with the singlechip, and a plurality of digital input/output interfaces and analog input interfaces are arranged on the singlechip; the touch screen comprises an ADS7843 touch screen controller, an SED1335 liquid crystal display controller and a display module DGA-32240-27-SNCW-HCDTC. The touch screen supports two forms of text display and graphic display, and has the characteristics of small volume, sensitive response, light weight and the like; meanwhile, the utility model integrates the touch screen, the singlechip and the local communication module into a whole, and has the advantages of miniaturization and multifunction.

Description

Top dust removal controller

Technical Field

The utility model relates to the technical field of dust removal control, in particular to a warehouse top dust removal controller.

Background

The top dust collector is one kind of monomer dust collecting equipment with automatic dust eliminating structure and is used in filtering fine and non-fibrous dry dust from gas or recovering dry powder in technological process. The warehouse top dust remover is applicable to warehouse top, warehouse bottom, belt conveying and local dust removal in cement factories, can also be used for local dust source dust removal in other industries, and has the characteristics of small and exquisite structure, flexible installation and strong practicability. Besides being widely used in the cement industry, the dust remover can also be used in the industries of casting industry, ceramic industry, glass industry, grinding wheel manufacture, chemical products, machining and the like, has good dust removing effect, and ensures that the emission concentration meets the corresponding emission requirement.

The existing cabin top dust removal controller mainly realizes the dust removal function of the cabin top dust remover through a control pulse valve, has a single control function and cannot meet the control requirements of the cabin top dust remover in multiple aspects.

Disclosure of Invention

The utility model mainly solves the problem of providing a bin top dust removal controller, which solves the problem that the existing bin top dust removal controller has single control function and cannot meet the control requirements of a bin top dust remover in multiple aspects.

In order to solve the technical problems, the utility model adopts a technical scheme that the bin top dust removal controller comprises a shell, wherein a touch screen is arranged on a front panel of the shell, a circuit board is arranged in the shell, the circuit board comprises a singlechip and a local communication module, the touch screen and the local communication module are electrically connected with the singlechip, and a plurality of digital input/output interfaces and analog input interfaces are arranged on the singlechip; the touch screen comprises an ADS7843 touch screen controller, an SED1335 liquid crystal display controller and a display module DGA-32240-27-SNCW-HCDTC, wherein data pins of the touch screen are electrically connected with corresponding input and output pins of the singlechip, and an interrupt control end of the touch screen is connected with an external interrupt input end of the singlechip through an inverter.

In some embodiments, the local communication module includes a chip MAX485, where an inverting input/output terminal and a non-inverting input/output terminal of the chip MAX485 serve as communication terminals for external connection; the driving output end and the enabling output end of the chip MAX485 are electrically connected with the corresponding input end of the single-chip microcomputer, the data output end of the chip MAX485 is connected with the corresponding input end of the single-chip microcomputer, and the data input end of the chip MAX485 is connected with the corresponding output end of the single-chip microcomputer.

In some embodiments, the singlechip is further connected with an analog acquisition interface circuit, the analog acquisition interface circuit comprises a chip HX711, an external clock or crystal oscillator input end of the chip HX711 is grounded, a positive input end of a first channel of the chip HX711 is connected with a differential output positive electrode of an external analog signal source after being connected with a first voltage dividing resistor, a negative input end of the first channel is connected with a differential output negative electrode of the external analog signal source, and the differential output positive electrode and the differential output negative electrode are connected through a first inductor and the first voltage dividing resistor.

In some embodiments, the shell also comprises a power circuit, the power circuit comprises a chip XL1509-5V, the input end of the chip XL1509-5V is connected with an external power supply, the output end outputs a second direct current power supply, the output end is connected with the cathode of a Schottky diode, the anode of the Schottky diode is grounded, the output end is also connected with an inductor, the other end of the inductor is connected with the anode of a first polarity capacitor, the cathode of the first polarity capacitor is grounded, and the anode of the first polarity capacitor is also electrically connected with the feedback end of the chip XL 1509-5V; the anode of the first polarity capacitor is connected with the anode of the first diode, the cathode of the first diode is connected with the anode of the second diode, and the cathode of the second diode is provided for a first direct current power supply of the singlechip; the negative electrode of the first diode is also electrically connected with the positive electrode of the third diode, and the negative electrode of the third diode is provided for the first direct current power supply of the chip HX 711.

In some embodiments, the singlechip is further connected with a switching value digital input interface circuit, the switching value digital input interface circuit comprises a first optocoupler, the second direct current power supply is connected with a third resistor and then divided into two paths, and one path is connected with a switching value input interface of the singlechip; one path is connected with the first optocoupler and the fourth resistor and then grounded.

In some embodiments, the singlechip is further connected with a switching value digital output interface circuit, the switching value digital output interface circuit comprises a second optical coupler, and the second direct current power supply is connected with the fifth resistor and the second optical coupler and then is connected with a switching value output interface of the singlechip.

In some embodiments, the single chip microcomputer is a chip STC8A4K32S2a12.

The beneficial effects of the utility model are as follows: the utility model discloses a dust removal controller for a cabin roof, which comprises a shell, wherein a touch screen is arranged on a front panel of the shell, a circuit board is arranged in the shell, the circuit board comprises a singlechip and a local communication module, the touch screen and the local communication module are electrically connected with the singlechip, and a plurality of digital input/output interfaces and analog input interfaces are arranged on the singlechip; the touch screen comprises an ADS7843 touch screen controller, an SED1335 liquid crystal display controller and a display module DGA-32240-27-SNCW-HCDTC. The touch screen supports two forms of text display and graphic display, and has the characteristics of small volume, sensitive response, light weight and the like; meanwhile, the utility model integrates the touch screen, the singlechip and the local communication module into a whole, and has the advantages of miniaturization and multifunction.

Drawings

FIG. 1 is a schematic view of the external structure of a roof dust removal controller according to the present utility model;

FIG. 2 is a schematic diagram of the connection of a roof dust removal controller according to the present utility model;

FIG. 3 is a schematic diagram of a connection between a singlechip and a touch screen in a roof dust removal controller according to the present utility model;

FIG. 4 is a schematic view of an interface of a touch screen in a roof dust removal controller according to the present utility model;

FIG. 5 is a schematic diagram of a single-chip microcomputer in a roof dust removal controller according to the present utility model;

FIG. 6 is a schematic diagram of a chip MAX485 in a local communication module of a roof dust removal controller according to the utility model;

FIG. 7 is a schematic diagram of an analog acquisition interface circuit of a roof dust removal controller in accordance with the present utility model;

FIG. 8 is a schematic diagram of a switching value digital input interface circuit in a roof dust removal controller according to the present utility model;

FIG. 9 is a schematic diagram of a switching value digital output interface circuit in a roof dust removal controller according to the present utility model;

fig. 10 is a schematic diagram of a power circuit in a roof dust removal controller according to the present utility model.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the utility model provides a dust removal controller on a bin top, which comprises a shell 1, wherein the whole shell 1 is in a cuboid shape, a touch screen 2 is arranged on a front panel of the shell 1, and a circuit board is arranged inside the shell 1.

Specifically, as shown in fig. 2, the circuit board includes a single-chip microcomputer 3 and a local communication module 4, the touch screen 2 and the local communication module 4 are electrically connected with the single-chip microcomputer 3, and a plurality of buttons are correspondingly arranged on the touch screen 2 and are respectively used for realizing different functions. The local communication module 4 is used for converting and transmitting local communication signals of the cabin roof dust remover, and the singlechip 3 is provided with a plurality of digital input/output interfaces (DI/DO interfaces) 31 and analog input interfaces (AI interfaces) 32, so that the requirements of signal input, output and control of the cabin roof dust removal controller in multiple aspects are met, and the application of the dust removal controller under multiple conditions is enhanced.

The utility model integrates the touch screen 2, the singlechip 3 and the local communication module 4, and has the advantages of miniaturization and multifunction.

In this embodiment, the touch screen 2 is electrically connected with the single-chip microcomputer 3, and by clicking a corresponding button on the touch screen 2, the single-chip microcomputer 3 corresponds to an interface to receive an operation instruction, and transmits a corresponding signal to a corresponding communication module to implement a corresponding operation. Clicking corresponding buttons on the touch screen 2 to realize corresponding functions, displaying the running state of the fan, and setting parameters. Compared with the traditional nixie tube display, the touch screen 2 has the advantages of convenience in operation, space saving, high reaction speed, firmness, durability and the like, and a user can operate a host computer only by touching corresponding characters or diagrams on the touch screen 2, so that man-machine interaction is more convenient.

In this embodiment, the touch screen 2 comprises an ADS7843 touch screen controller, an SED1335 liquid crystal display controller, a display module DGA-32240-27-SNCW-HCDTC, and the like. ADS7843 is used as a special interface chip of the resistive touch screen, and can be in butt joint with the singlechip 3 to process the conversion signals. The touch screen 2 supports two forms of text display and graphic display, and has the characteristics of small volume, sensitive response, light weight and the like.

Further, as shown in fig. 3, the data pins (eight D0-D7) of the touch screen are electrically connected to the input/output pins (eight P0.0-P0.7) of the singlechip, and the contrast adjusting end VO of the touch screen is connected to the potentiometer to realize contrast adjustment. The interrupt control end INT of the touch screen is connected with the external interrupt input end P3.2 of the singlechip through an inverter, and the touch point data are transmitted to the singlechip in an interrupt triggering mode, so that the control of the singlechip is realized.

As shown in fig. 4, the interface of the touch screen is displayed with functional buttons, including remote start, fan stop, alarm silencing, etc. When the remote start button is clicked, the signal is a communication start signal, the button becomes green after receiving the communication start signal, and meanwhile, the fan and ash removal are started, and the remote mode is realized. Pressing a fan start button in a remote mode can start the fan; pressing the fan stop button can stop the fan. Correspondingly, a status indicator lamp is also displayed on the touch screen, different colors of the status indicator lamp display different states of the fan, the fan is indicated to run when green, the fan is indicated to be faulty when red, and the gray is indicated to stop. For the alarm silencing button on the screen, when an alarm occurs, the yellow lamps of the three external colors are lightened and simultaneously output an audible alarm, and after the button is pressed down, the audible and visual alarm is turned off.

Meanwhile, the touch screen can also display information such as air bag pressure, pressure difference, fan current, running time, cycle times and the like. Wherein, the air bag pressure, the pressure difference and the fan current all display data; when the fan operates and the operating current is greater than 1A, the operation time of the fan is recorded; the cycle count is carried out by taking the period from the time when the injection of all pulse valves is completed to the time when the injection is started next time as a period.

Referring to fig. 3 and 5, in this embodiment, the single chip microcomputer is a chip STC8A4K32S2a12, and the reference voltage terminal AVref, the ADC power source terminal AVcc, and the power source terminal Vcc of the chip STC8A4K32S2a12 are powered by the first dc power source +4v. Eight input and output ends (P0.0-P0.7) of the chip STC8A4K32S2A12 are electrically connected with eight data pins (D0-D7) of the touch screen, and the chip is provided with various input, output and analog input interfaces, so that various control requirements on the cabin roof dust remover are met, and the multifunctional cabin roof dust removal controller is realized.

Further, the input/output terminal P1.3 of the chip STC8A4K32S2a12 is connected to the chip select pin CS and the write data terminal WR of the touch screen, the input/output terminal P1.3 of the chip STC8A4K32S2a12 performs data write control through the write data terminal WR of the touch screen and the chip select pin CS of the touch screen, and the chip STC8A4K32S2a12 sends display data and writes the display data to the touch screen through eight data pins (D0-D7) of the touch screen for display. The output terminal P1.5 and the input terminal P1.6 of the chip STC8A4K32S2a12 are respectively connected to the digital input pin DI and the digital output pin DO of the touch screen. The external interrupt input terminal P3.2 of the chip STC8A4K32S2A12 is connected with the interrupt control terminal INT of the touch screen, so that corresponding external interrupt control is realized.

As shown in fig. 6, in the present embodiment, the local communication module includes a chip MAX485, and an inverting input output terminal B and a non-inverting input output terminal a of the chip MAX485 serve as communication terminals for external connection. The driving output end DE and the enabling output end RE of the chip MAX485 are electrically connected with the corresponding input end of the single chip microcomputer, the data output end RO of the chip MAX485 is connected with the input end P1.0 of the single chip microcomputer in FIG. 5, and the data input end DI is connected with the output end P1.1 of the single chip microcomputer in FIG. 5. The power supply terminal VCC of the chip MAX485 is electrically connected to the second dc power supply +5v, and is further connected in series with the capacitor C9 and then connected to the ground terminal GND.

When the chip MAX485 is used as an output driver, an output signal from the output end P1.1 of the singlechip is loaded onto an RS485 connecting line through the inverting input and output end B and the non-inverting input and output end A of the chip MAX 485; when the chip MAX485 is used as a signal receiver, the signal from the RS485 connection line is read to the input end P1.0 of the singlechip through the data output end RO.

As shown in fig. 7, for the analog input interface in fig. 2, the corresponding analog acquisition interface circuit includes a chip HX711, an external clock or crystal oscillator input terminal XI of the chip HX711 is grounded, the chip HX711 automatically selects to use an internal clock oscillator, and related circuits of the external clock input and the crystal oscillator are automatically turned off. In this case, typical output data rates are 10Hz or 80Hz. The power supply directly takes the same first direct current power supply +4V as the single chip power supply. The on-chip regulated power supply circuit provides a stable low-noise analog power supply for the on-chip digital-to-analog converter through the off-chip PNP tube S8550 and the voltage dividing resistors R17 and R18.

The chip HX711 is used as a digital-to-analog conversion chip to convert analog signals into digital data, and is communicated with the singlechip through a digital interface (such as SPI or a serial interface). The first channel A interface is connected with an external analog signal source, and two analog differential input ends of the first channel A are respectively used for accessing external analog differential signals. When the voltage of the external analog signal is smaller, in order to fully utilize the input dynamic range of the digital-to-analog converter, the programmable gain of the channel is larger and is 128 or 64, and the full-scale differential input voltages corresponding to the gains are respectively +/-20 mV or +/-40 mV.

In this embodiment, the external analog signal is connected to the positive input terminal inp a of the first channel a and the negative input terminal INNA of the first channel a of the chip HX711 through 2 wires. The positive input end INPA of the first channel A is connected with a first voltage dividing resistor R16 and then is connected with a differential output positive electrode A+ of an external analog signal source, the negative input end INNA of the first channel A is connected with a differential output negative electrode A-of the external analog signal source, and the differential output positive electrode A+ and the differential output negative electrode A-are also connected with the first voltage dividing resistor R16 through a first inductor C22.

As shown in fig. 8, for the switching value input interface in fig. 2, the corresponding switching value input interface circuit includes an external input positive terminal and an external input negative terminal, the external input positive terminal is connected to the first resistor R1, the first optocoupler U1, the second resistor R2, and the external control switch K, and then is connected to the external input negative terminal, and the external control switch K is used for performing on-off control on an externally input switching signal. The second direct current power supply +5V is connected with the third resistor R3 and then divided into two paths, wherein one path is a level output end and is connected with a DI interface of the singlechip; one path is connected with the first optocoupler U1 and the fourth resistor R4 and then grounded.

The switching value is here intended to be understood as meaning the logical variables which reflect the two states "yes" or "no", such as the "closed" or "open" state of the circuit breaker, the "on" or "off" state of the switch or relay contact, the "on" or "off" state of the control signal, etc. The external device typically provides a switching state signal by "closing" and "opening" its auxiliary relay contacts. Because the switching value state just corresponds to '1' or '0' of binary digits, the switching value can be read in as digital value (each path of switching value signal occupies one bit of binary digits), and the DI interface is used for providing an input channel for the switching value and realizing electrical isolation between the inside and the outside of the digital protection device so as to ensure the safety of an internal weak current electronic circuit and reduce external interference.

When the contact of the external control switch K is opened, no current flows through the light emitting diode, the light emitting diode is not irradiated to be cut off, and the output end of the light emitting diode is high-level 1. The "0" and "1" states may be read directly by the CPU as digital quantities. By utilizing the performance and characteristics of the photoelectric coupler, the state information of the switch is transmitted, the electric isolation of two sides is realized, the influence of interference is greatly weakened, and the safe operation of the circuit in the shell in FIG. 1 is ensured.

As shown in fig. 9, for the switching value output interface in fig. 2, the corresponding switching value output interface circuit includes a second optocoupler U2, and the second dc power supply +5v is directly connected to the DO interface of the single-chip microcomputer after being connected to the fifth resistor R5 and the second optocoupler U2. And the high voltage and the low voltage are respectively output through the DO interface, and the light emitting diode of the second optocoupler U2 is controlled to be turned on or off, so that a switching signal is output to the outside. Fig. 9 also shows a third optocoupler U3, which can be used as a circuit for switching the input signal, and has the same functions as the circuit shown in fig. 8, and will not be described again here.

By adopting the connection method shown in fig. 9, since tripping and closing are not directly controlled and the requirements on real-time performance and importance are not very high, an output logic signal can be used for controlling an output digital signal. The photoelectric coupler has the functions of realizing the electrical isolation of two sides, improving the anti-interference capability and realizing the conversion of different logic levels.

As shown IN fig. 10, the power circuit includes a chip XL1509-5V, an input terminal IN of the chip XL1509-5V is connected to an external power source, such as dc+24v, an output terminal OUT outputs a second dc power source +5v, and the output terminal OUT is connected to a cathode of a schottky diode D5, an anode of the schottky diode D5 is grounded, and meanwhile, the output terminal OUT is further connected to an inductor L1, another end of the inductor L1 is connected to an anode of a first polarity capacitor C3, a cathode of the first polarity capacitor C3 is grounded, an anode of the first polarity capacitor C3 is electrically connected to a feedback terminal FB of the chip XL1509-5V, and other pin terminals of the chip XL1509-5V are all grounded. The positive pole of the first polarity capacitor C3 is connected with the positive pole of the first diode D3, the negative pole of the first diode D3 is connected with the positive pole of the second diode D2, and the negative pole of the second diode D2 is provided for the first direct current power supply +4V of the singlechip. The cathode of the first diode D3 is also electrically connected to the anode of the third diode D4, and the cathode of the third diode D4 provides the first dc power to the chip HX 711. The two ends of the first polarity capacitor C3 are also preferably connected in parallel with a non-polarity capacitor C11.

The chip XL1509-5V can convert direct current +24V into second direct current power supply +5V output and can be used for a local communication module, a switching value digital input interface circuit and a switching value digital output interface circuit. Then, after the voltage is divided by the first diode D3 and the second diode D2, the voltage is supplied to the first direct current power +4v of the singlechip, and after the voltage is divided by the first diode D3 and the third diode D4, the voltage is supplied to the first direct current power +4v of the chip HX 711. It can be seen that the two independent power supply branches adopted herein supply power to the singlechip and the chip HX711 respectively, and the effect is to avoid mutual power supply interference, because the power supply of the chip HX711 has a phenomenon of instantaneous large current, that is, when the chip HX711 sends out a signal, an obvious phenomenon of instantaneous large current is generated, so that the power supply voltage is unstable, but the reverse blocking effect of the third diode D4 does not cause influence on the power supply stability of the first direct current power supply +4v of the singlechip. Also, due to the reverse blocking effect of the second diode D2, the power supply of the singlechip will not affect the power supply of the chip HX 711. The existence of the reverse blocking effect of the first diode D3 does not cause unstable influence on the voltage of the second direct current power supply +5V generated by the output end OUT of XL 1509-5V.

Further, the input end IN of the chip XL1509-5V is further connected IN series with the cathode of a fourth diode D1, the anode D1 of the fourth diode is connected with an external DC power supply +24V, the cathode of the fourth diode D1 is further connected with the anode of a second diode capacitor C1, and the cathode of the second diode capacitor C1 is grounded. The two ends of the second polar capacitor C1 are also preferably connected in parallel with a non-polar capacitor C2. The negative electrode of the third diode D4 is also connected with the positive electrode of a third polar capacitor C4, the negative electrode of the third polar capacitor C4 is grounded, and two ends of the third polar capacitor C4 are also preferably connected with a nonpolar capacitor C5 in parallel. The cathode of the second diode D2 is further connected to at least one non-polar capacitor, as shown in fig. 10, including two non-polar capacitors C6 and C7, where the other end of the non-polar capacitor is grounded.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.

Claims

1. The dust removal controller for the cabin roof is characterized by comprising a shell, wherein a touch screen is arranged on a front panel of the shell, a circuit board is arranged in the shell, the circuit board comprises a singlechip and a local communication module, the touch screen and the local communication module are electrically connected with the singlechip, and a plurality of digital input/output interfaces and analog input interfaces are arranged on the singlechip;

the touch screen comprises an ADS7843 touch screen controller, an SED1335 liquid crystal display controller and a display module DGA-32240-27-SNCW-HCDTC, wherein data pins of the touch screen are electrically connected with input and output pins corresponding to the singlechip, and an interrupt control end of the touch screen is connected with an external interrupt input end of the singlechip.

2. The warehouse top dust removal controller of claim 1, wherein the local communication module comprises a chip MAX485, and an inverting input output end and a non-inverting input output end of the chip MAX485 serve as communication terminals connected to the outside; the driving output end and the enabling output end of the chip MAX485 are electrically connected with the input end corresponding to the single chip microcomputer, the data output end of the chip MAX485 is connected with the input end corresponding to the single chip microcomputer, and the data input end of the chip MAX485 is connected with the output end corresponding to the single chip microcomputer.

3. The warehouse top dust removal controller according to claim 2, wherein the single chip microcomputer is further connected with an analog quantity acquisition interface circuit, the analog quantity acquisition interface circuit comprises a chip HX711, an external clock or crystal oscillator input end of the chip HX711 is grounded, a positive input end of a first channel of the chip HX711 is connected with a first divider resistor and then connected with a differential output positive electrode of an external analog signal source, a negative input end of the first channel is connected with a differential output negative electrode of the external analog signal source, and the differential output positive electrode is connected with the differential output negative electrode through a first inductor and a first divider resistor.

4. The dust removal controller of claim 3, wherein the housing further comprises a power circuit, the power circuit comprises a chip XL1509-5V, the input end of the chip XL1509-5V is connected with an external power supply, the output end of the chip XL1509-5V outputs a second direct current power supply, the output end of the chip XL is connected with the cathode of a Schottky diode, the anode of the Schottky diode is grounded, the output end of the Schottky diode is also connected with an inductor, the other end of the inductor is connected with the anode of a first polarity capacitor, the cathode of the first polarity capacitor is grounded, and the anode of the first polarity capacitor is also electrically connected with the feedback end of the chip XL 1509-5V; the anode of the first polarity capacitor is connected with the anode of a first diode, the cathode of the first diode is connected with the anode of a second diode, and the cathode of the second diode is provided for a first direct current power supply of the singlechip; the negative electrode of the first diode is also electrically connected with the positive electrode of a third diode, and the negative electrode of the third diode is provided for the first direct current power supply of the chip HX 711.

5. The dust removal controller of the cabin roof according to claim 4, wherein the single-chip microcomputer is further connected with a switching value digital input interface circuit, the switching value digital input interface circuit comprises a first optocoupler, the second direct current power supply is connected with a third resistor and then divided into two paths, and one path is connected with a switching value input interface of the single-chip microcomputer; one path is connected with the first optocoupler and the fourth resistor and then grounded.

6. The dust removal controller of claim 5, wherein the single-chip microcomputer is further connected with a switching value digital output interface circuit, the switching value digital output interface circuit comprises a second optocoupler, and the second direct-current power supply is connected with a fifth resistor and the second optocoupler and then is connected to a switching value output interface of the single-chip microcomputer.

7. The roof dust removal controller of claim 1, wherein the single chip microcomputer is a chip STC8A4K32S2a12.