CN206982473U - Applied to the workpiece pattern recognition device for throwing shot blasting equipment - Google Patents

Abstract

The utility model is applied to the workpiece pattern recognition device for throwing shot blasting equipment, including power supply module, control module, photographing module, memory module, photoelectric detective circuit, motor control module, cue module and RS485 communication modules, power supply module provides tetra- kinds of direct voltage outputs of 5V, 3.3V, 2.8V, 1.8V；Control module includes microcontroller STM32F446 and its peripheral circuit；Photographing module includes OV7725 cameras；Memory module is connected with microcontroller and throwing shot blasting equipment respectively using the control terminal and output end of AT24C02 storage chip photoelectric detective circuits；Motor control module includes drive circuit and micromachine；RS485 communication modules include photoelectric isolating circuit and RS485 circuits.The utility model is terse, advanced, reliable using circuit, and cost is low, and function is strong, and communications protocol is simple, is easy to the upgrading of new used equipment.

Description

Applied to the workpiece pattern recognition device for throwing shot blasting equipment

Technical field

It the utility model is related to and throw pressure spray process process field, and in particular to applied to the workpiece pattern-recognition for throwing shot blasting equipment Device.

Background technology

The principle for throwing spray is rotated with motor impeller body, and by the effect of centrifugal force, (bullet is had into cast steel ball, steel Silk pill cutting, the different type such as stainless shot) and sand throw to the surface of workpiece, the surface of workpiece is reached certain roughness, Workpiece is set to become attractive in appearance, or the welding tension of change workpiece is compression, improves the service life of workpiece.

Large-scale throwing shot blasting equipment can handle a variety of throw and spray workpiece, and workpiece, which enters to throw in shot blasting equipment, typically uses suspension hook Formula, so it is all different that different workpiece, which throws spray angle degree and throwing spray time, there are multiple shower nozzles in shot blasting equipment due to throwing, because This throwing spray angle degree for needing to adjust ramming head and each time for throwing spray throw the optimization processing for spraying workpiece to realize.

Current throwing shot blasting equipment technical merit is relatively low, and the control system for throwing shot blasting equipment is substantially FPGA control Device PLC processed is formed, all kinds of motor order start-stops needed in major control technique, therefore the spray for different workpieces is thrown, mainly Have two kinds of solutions, it is a kind of be by manually throwing the throwing spray angle degree of shower nozzle to adjust, it is artificial to be controlled not using manual operator The time is sprayed in throwing with workpiece；Another kind is that the arrange parameter of manual operator is organized in PLC, it is desired nonetheless to artificial to utilize Touch-screen selects.

Under above-mentioned two ways, judged using the experience of people, so as to select suitably to throw spray angle degree, power The parameters such as degree, time, it is so, very high not only for the practical operation skill requirement of operator, and also people also easily produces Raw error in judgement or manually operated error, it is unfavorable for throwing the industrialization of pressure spray process, greatly reduces production efficiency, add life Produce cost.

Utility model content

In order to solve the above problems, the utility model provides a kind of workpiece pattern-recognition dress for being applied to throw shot blasting equipment Put, image taking can be carried out using camera, connection of shaking hands is carried out with throwing shot blasting equipment controller by I/O interfaces and RS485 Network, shot-blasting machine control system is coordinated to realize that intelligence throws spray.

The utility model uses following technical scheme：

Applied to the workpiece pattern recognition device for throwing shot blasting equipment, including power supply module, control module, photographing module, deposit Memory modules, photoelectric detective circuit, motor control module, cue module and RS485 communication modules, described power supply module Including 24V DC voltage input ends, and provide 5V, 3.3V, 2.8V, 1.8V tetra- kinds of DC voltage output ends；Described control mould Block includes microcontroller STM32F446 and its peripheral circuit；Described photographing module includes OV7725 cameras, OV7725 shootings Head is electrically connected by DCMI buses and controlling bus with microcontroller STM32F446；Described memory module uses AT24C02 Storage chip simultaneously electrically connects with microcontroller STM32F446；The control terminal and microcontroller of the photoelectric detective circuit STM32F446 is electrically connected, and the output end of photoelectric detective circuit is connected with throwing the photoelectric sensor in shot blasting equipment；Described motor Control module includes drive circuit and micromachine, and described drive circuit input electrically connects with microcontroller STM32F446, Drive circuit output end connects micromachine；The output end of cue module is micro- by photoelectric isolated chip ADUM1311 connections Controller STM32F446, the output end for getting in touch with wire size module connect shot-blasting machine control system by data wire；RS485 communication moulds Block includes photoelectric isolating circuit and RS485 circuits, photoelectric isolating circuit input connection microcontroller STM32F446, photoelectricity every RS485 circuit input ends are connected from circuit output end, RS485 circuit output ends cross data wire connection shot-blasting machine control system.

Further, identification device also includes light supply module, the control terminal and micro-control of described light supply module Device STM32F446 connections processed.

Further, described light supply module includes triode Q1, and triode Q1 emitter stages connect 3.3V direct currents respectively Voltage and resistance R12 one end, the resistance R12 other ends meet the pins of microcontroller STM32F446 the 24th and resistance R15 mono- respectively End, another termination triode Q1 base stages of resistance R15, triode Q1 colelctor electrodes difference connecting resistance R11 one end, resistance R13 one end, electricity R11 other end sending and receiving optical diode D1 positive poles, resistance R13 other end sending and receiving optical diode D2 positive poles are hindered, light emitting diode D1 is born Pole, light emitting diode D2 negative poles are grounded.

Further, power supply module includes power supply chip U7, power supply chip U3, voltage stabilizing chip U4, voltage stabilizing chip U5, power supply Chip U7 the first pin, the 7th pin, the 8th pin is connected as a single entity and is connected with resistance R10 one end, the resistance R10 other ends point Not Lian Jie the pins of power supply chip U7 the 6th, polar capacitor C19 positive poles, diode D3 negative poles, polar capacitor C19 negative poles meet COM, two Pole pipe D3 positive poles connect 24V DC voltages；Power supply chip U7 second pins connect inductance L3 one end, voltage-regulator diode D4 negative poles respectively, The inductance L3 other ends connect inductance L4 one end, polar capacitor C18 positive poles respectively, inductance L4 other ends output 5V DC voltages and with pole Property the connection of electric capacity C17 positive poles, voltage-regulator diode D4 positive poles, polar capacitor C17 negative poles connect COM, the pins of power supply chip U7 the 5th Connecting resistance R14 one end, resistance R16 one end respectively, another termination polar capacitor C18 positive poles of resistance R14, polar capacitor C18 negative poles, The resistance R16 other ends meet COM, and the pins of power supply chip U7 the 3rd meet COM by electric capacity C20, and the pins of power supply chip U7 the 4th connect COM；Power supply chip U3 second pins connect 24V DC voltages and polar capacitor C10 positive poles, polar capacitor C10 negative poles difference respectively The pins of power supply chip U3 first and COM are met, the pins of power supply chip U3 the 6th output 3.3V DC voltages simultaneously connect polar capacitor C9 Positive pole, polar capacitor C9 negative poles, the pins of power supply chip U3 the 7th are grounded；The pins of voltage stabilizing chip U4 first connect 3.3V direct currents Pressure, the pins of voltage stabilizing chip U4 the 3rd connect the pins of voltage stabilizing chip U4 first, electric capacity C15 one end respectively, and the electric capacity C15 other ends are grounded, Voltage stabilizing chip U4 second pins are grounded, and the pins of voltage stabilizing chip U4 the 5th output 2.8V DC voltages simultaneously connect polar capacitor C11 just Pole, polar capacitor C11 negative poles ground connection, the pins of voltage stabilizing chip U4 the 4th are grounded by electric capacity C16；The pins point of voltage stabilizing chip U5 first 3.3V DC voltages, the pins of voltage stabilizing chip U5 the 3rd, electric capacity C14 one end, the electric capacity C14 other ends, voltage stabilizing chip U5 second are not met Pin is grounded, and the pins of voltage stabilizing chip U5 the 5th output 1.8V DC voltages simultaneously connect polar capacitor C12 positive poles, polar capacitor C12 negative poles are grounded, and the pins of voltage stabilizing chip U5 the 4th are grounded by electric capacity C13.

Further, the pins of microcontroller STM32F446 the 28th are grounded by resistance R21；Microcontroller STM32F446 47th, 31,18,63,12 pins are directly grounded, and the pins of microcontroller STM32F446 the 5th meet crystal oscillator Y2 the 3rd by resistance R7 and drawn Pin, the pins of microcontroller STM32F446 the 60th are grounded by resistance R22, and the pins of microcontroller STM32F446 the 7th pass through electric capacity C25 is grounded, and the pins of microcontroller STM32F446 the 7th connect 3.3V DC voltages by resistance R20, microcontroller STM32F446 the 30 pins are grounded by electric capacity C3, and the pins of microcontroller STM32F446 the 13rd connect 3.3V DC voltages, microcontroller by inductance L2 Device STM32F446 the 1st, 64,48,32,19 pins connect 3.3V DC voltages, and the pins of crystal oscillator Y2 the 4th connect 3.3V direct currents respectively Pressure and electric capacity C7 one end, the electric capacity C7 other ends, crystal oscillator Y2 second pins are grounded.

Further, described photographing module is connected respectively using OV7725 camera U2, camera U2 D0-D7 ports Microcontroller STM32F446 PC12-PC5 ports, the pins of camera U2 the 17th meet microcontroller STM32F446 the 22nd and drawn Pin, the pins of camera U2 the 9th connect the pins of microcontroller STM32F446 the 20th, and the pins of camera U2 the 7th connect microcontroller The pins of STM32F446 the 34th, the pins of camera U2 the 13rd meet the pins of microcontroller STM32F446 the 41st, camera U2 the 8th Pin connects the pins of microcontroller STM32F446 the 21st, and the pins of camera U2 the 5th connect the pins of microcontroller STM32F446 the 33rd, The pins of camera U2 the 3rd connect the pins of microcontroller STM32F446 the 55th, and the pins of camera U2 the 6th connect microcontroller The pins of STM32F446 the 29th；The pins of camera U2 the 5th connect 2.8V DC voltages by resistance R3, and the pins of camera U2 the 3rd lead to Cross resistance R4 and connect 2.8V DC voltages, the pins of camera U2 the 17th are grounded by resistance R5, and the pins of camera U2 the 13rd lead to Cross resistance R6 and connect the pins of crystal oscillator Y1 the 3rd, the pins of camera U2 the 6th meet 2.8V DC voltages, camera U2 by resistance R1 Six pins are grounded by electric capacity C1, and the pins of camera U2 the 8th are grounded by resistance R2, and the pins of camera U2 the tenth pass through electric capacity C2 is grounded, and the pins of camera U2 the 15th, second pin are grounded, and the pins of camera U2 the 4th connect 2.8V direct currents by inductance L1 Voltage, the pins of camera U2 the 4th are grounded by electric capacity C4, and the pins of camera U2 the 11st meet 2.8V DC voltages, camera U2 11st pin is grounded by electric capacity C5, and crystal oscillator Y1 second pins ground connection, the pins of crystal oscillator Y1 the 4th connect 3.3V DC voltages respectively With electric capacity C6 one end, electric capacity C6 other ends ground connection.

Further, photoelectric detective circuit includes outer transmitting tube and outer reception pipe, and the positive pole of infrared transmitting tube passes through resistance R26 connects 3.3V DC voltages, and the negative pole of infrared transmitting tube connects triode Q3 colelctor electrodes, triode Q3 grounded emitters, triode Q3 base stages connect the pins of microcontroller STM32F446 the 8th by resistance R33；Infrared receiving tube positive pole is connect respectively by resistance R27 3.3V DC voltages and resistance R30 one end, the resistance R30 other ends are OUTPUT_2 output ends and connected with the pins of optocoupler U13 the 6th Connect, OUTPUT_2 output ends are connected with throwing shot blasting equipment, and infrared receiving tube negative pole meets the pins of optocoupler U13 first, optocoupler U13 the 3rd Pin and the 4th pin are grounded.

Further, motor control module includes drive circuit and micromachine Motor, and described drive circuit includes light Coupling U12, the pins of optocoupler U12 first connect 3.3V DC voltages and resistance R31 one end, the resistance R31 other ends respectively by resistance R28 Connect the pins of microcontroller STM32F446 the 8th and resistance R32 one end respectively, another termination triode Q4 base stages of resistance R32, three Pole pipe Q4 grounded emitters, triode Q4 colelctor electrodes connect the pins of optocoupler U12 the 3rd, and the pins of optocoupler U12 the 6th are divided by resistance R29 24V DC voltages and resistance R25 one end, another termination triode Q2 colelctor electrodes of resistance R25 are not connect, and triode Q2 base stages connect optocoupler The pins of U12 the 4th, optocoupler U12 emitter stages connect micromachine Motor control terminals.

Further, cue module master chip is model TLP181 optocoupler U8, and the pins of optocoupler U8 first pass through Resistance R18 connects 3.3V DC voltages, and the pins of optocoupler U8 the 3rd connect the pins of microcontroller STM32F446 the 11st, and optocoupler U8 the 4th draws Pin is grounded, and the pins of optocoupler U8 the 6th are OUTPUT_1 output ends and defeated by resistance R17 connection 3.3V DC voltages, OUTPUT_1 Go out end and electric control system is connected by data wire, realize that cue interacts.

Further, described RS485 communication modules include photoelectric isolating circuit and RS485 circuits, photoelectric isolating circuit Include 485 communication chip U11 including phase inverter U9, digital isolator U10, RS485 circuit, the pins of phase inverter U9 first connect micro-control The pins of device STM32F446 the 59th processed, the pins of phase inverter U9 the 13rd meet the pins of microcontroller STM32F446 the 61st, phase inverter U9 4th pin connects the pins of microcontroller STM32F446 the 62nd, and the pins of phase inverter U9 the 5th connection phase inverter U9 second pins are anti-phase The pins of device U9 the 14th meet 3.3V DC voltages and electric capacity C21 one end, electric capacity C21 other ends ground connection, phase inverter U9 the 7th respectively Pin is grounded, and the pins of phase inverter U9 the 11st connect the pins of phase inverter U9 the 12nd, and the pins of phase inverter U9 the 3rd meet phase inverter U9 the Eight pins, the pins of phase inverter U9 the 9th connect the pins of digital isolator U10 the 5th, and the pins of phase inverter U9 the tenth connect digital isolator The pins of U10 the 3rd, the pins of phase inverter U9 the 6th connect the pins of digital isolator U10 the 4th, the pin sending and receiving light two of phase inverter U9 the 6th Pole pipe D6 negative poles, light emitting diode D6 positive poles connect 3.3V DC voltages by resistance R24；Digital isolator U10 second pins, Eight pins are grounded, and the pins of digital isolator U10 first connect 3.3V DC voltages and are grounded by electric capacity C22, digital isolator U10 16th pin connects 5V DC voltages and meets COM by electric capacity C23, and the pins of digital isolator U10 the 15th, the 9th pin connect COM, digital isolator U10 the 12nd pin connect 485 the first pins of communication chip U11, the pins point of digital isolator U10 the 14th 485 communication chip U11 second pins and the 3rd pin are not connect, and the pins of digital isolator U10 the 13rd connect 485 communication chips The pins of U11 the 4th；The pins of 485 communication chip U11 the 5th meet COM, and the pins of 485 communication chip U11 the 6th are output terminals A 1 and led to To cross resistance R23 and connect 5V DC voltages, the pins of 485 communication chip U11 the 7th are output end B1 and meet COM by resistance R19,485 The pins of communication chip U11 the 8th connect 5V DC voltages and meet COM by electric capacity C24, and lightning protection diode DT1, transient state suppress two poles Pipe D5 is arranged in parallel between output terminals A 1 and output end B1, and output terminals A 1, output end B1 connect electrical control by data wire System.

The beneficial effects of the utility model are：

1st, the installation cost is very low, but the intelligence spray throwing that compressed air shotblasting machine is thrown to realizing plays an important role, and uses the circuit Realize that workpiece identification module recognition speed is fast (less than 100ms), cost is low；Identification for various workpieces species, due to the electricity The chip performance that road uses is high, can carry out expansion increase-volume, when sample reaches it is thousands of when, recognition speed is also less than 200ms, performance Index fully meets requirement.

2nd, power module has stronger voltage endurance capability, stronger antijamming capability, technical grade product, meets that different regions show The needs of field environment, the different burning voltages that the exportable cameras of RT9193 need, to ensure the stability of image；Image head mould Block OV7725 is 300,000 pixel 640 × 480, and SCCB interfaces, shooting angle is big, can capture larger throwing spray workpiece image, together When, it is interfacing to save cost because the driving hardware containing camera chip inside STM32F446, play more high-quality Performance；Light supply circuit gives camera light filling using triode amplification 2 LEDs of driving, and shooting image is apparent；Photoelectricity Detecting circuit and the camera site for throwing spray workpiece is perceived using a pair of infrared transmitting tubes, reception pipe, transmitting tube is amplified using triode, Reception pipe receives the region of light conduction using optocoupler, to meet the situation that is in the light caused by multiple types workpiece.

Brief description of the drawings

Fig. 1 is the utility model device overall structure theory diagram；

Fig. 2 is the circuit theory diagrams of the utility model device power supply module；

Fig. 3 is the circuit theory diagrams of the utility model device control module；

Fig. 4 is the circuit theory diagrams of the utility model device photographing module；

Fig. 5 is the circuit theory diagrams of the utility model device memory module；

Fig. 6 is the circuit theory diagrams of the utility model device photoelectric detective circuit；

Fig. 7 is the circuit theory diagrams of the utility model device motor control module；

Fig. 8 is the circuit theory diagrams of the utility model device cue module；

Fig. 9 is the circuit theory diagrams of the utility model device RS485 communication modules；

Figure 10 is the circuit theory diagrams of the utility model device light supply module；

Figure 11 is the equipment connecting relation figure that pressure spray process is entirely thrown when the utility model method is implemented.

Embodiment

As shown in figure 1, applied to throwing the workpiece pattern recognition device of shot blasting equipment, including power supply module, control module, take the photograph As module, memory module, photoelectric detective circuit, motor control module, cue module, RS485 communication modules and light Compensating module, described power supply module include 24V DC voltage input ends, and provide 5V, 3.3V, 2.8V, 1.8V tetra- kinds of direct currents Voltage output end；Described control module includes microcontroller STM32F446 and its peripheral circuit；Described photographing module includes OV7725 cameras, OV7725 cameras are electrically connected by DCMI buses and controlling bus with microcontroller STM32F446；It is described Memory module using AT24C02 storage chips and being electrically connected with microcontroller STM32F446；The photoelectric detective circuit Control terminal electrically connects with microcontroller STM32F446, and the output end of photoelectric detective circuit is with throwing the photoelectric sensing in shot blasting equipment Device connects；Described motor control module includes drive circuit and micromachine, described drive circuit input and microcontroller Device STM32F446 is electrically connected, and drive circuit output end connection micromachine, micromachine can be realized with drive transmission device and transported It is dynamic；The output end of cue module gets in touch with wire size by photoelectric isolated chip ADUM1311 connection microcontroller STM32F446 The output end of module connects shot-blasting machine control system by data wire；RS485 communication modules include photoelectric isolating circuit and RS485 Circuit, photoelectric isolating circuit input connection microcontroller STM32F446, photoelectric isolating circuit output end connection RS485 circuits Input, RS485 circuit output ends cross data wire connection shot-blasting machine control system；The control terminal of described light supply module with LED connects.

Above-mentioned workpiece pattern recognition device, its operation principle and function are mainly：Power supply module supplies for DC24V voltages Electricity, the power supply are typically derived from the power supply of PLC in shot-blasting machine control system power distribution cabinet, and the power supply becomes through DC-DC power module Into microcontroller required voltage, while pass through the simulation+5V voltages that MC34063 becomes RS485 communications.The working condition of module It is connected by an I/O interfaces of microcontroller by photoelectric isolating circuit with shot-blasting machine control system control, host computer is given during work One low level signal.The in running order situation of module：When the workpiece for needing to throw spray passes through infrared emission by conveyer Behind receiving area, photoelectric detective circuit signal launching electrical level changes the external interrupt for causing STM32F446 microcontrollers；Microcontroller Device drives DC micro-motor to open the baffle plate of camera by I/O mouths, and the center of baffle plate, which carries, clears up camera dust fine hair, Because it is big to throw the pollution of shot-peening workshop, easily make lens blur；Baffle plate opening time has motor operation speed and limit switch to limit, Light is opened simultaneously, and camera OV7725 is carried out under controlling bus order to throwing spray workpiece positioning shooting, and microcontroller passes through DCMI buses obtain view data；Image is handled, compared with advance master pattern, tries to achieve the model of workpiece. Shot-blasting machine control system (PLC master controls core) is uploaded to through RS485 by photoelectric isolating circuit again.The parameters such as the numbering of module are deposited Storage is in AT24C02 storage circuits.

In order to more accurately understand the circuit theory of whole identification device, enter below for the circuit structure of disparate modules Row describes in detail.

As shown in Fig. 2 power supply module includes power supply chip U7, power supply chip U3, voltage stabilizing chip U4, voltage stabilizing chip U5, its In, power supply chip U7 model MC34063, power supply chip U3 model 27D-24S03R3W, voltage stabilizing chip U4 model RT9193-28, voltage stabilizing chip U5 model RT9193-18.27D-2403R3W has stronger voltage endurance capability, and stronger is anti-dry Disturb ability, technical grade product, meet the needs of different regions site environment；RT9193 be a high Ripple Suppression than low voltage difference High PRSS linear voltage stabilization device, the different burning voltages that exportable camera needs, to ensure the stability of image.

The circuit connecting relation of power supply module is：

Power supply chip U7 the first pin, the 7th pin, the 8th pin is connected as a single entity and is connected with resistance R10 one end, electricity The resistance R10 other ends connect the pins of power supply chip U7 the 6th, polar capacitor C19 positive poles, diode D3 negative poles, polar capacitor respectively C19 negative poles meet COM, and diode D3 positive poles connect 24V DC voltages；Power supply chip U7 second pins connect inductance L3 one end, steady respectively Diode D4 negative poles are pressed, the inductance L3 other ends connect inductance L4 one end, polar capacitor C18 positive poles, the output of the inductance L4 other ends respectively 5V DC voltages are simultaneously connected with polar capacitor C17 positive poles, and voltage-regulator diode D4 positive poles, polar capacitor C17 negative poles meet COM, electricity The pins of source chip U7 the 5th difference connecting resistance R14 one end, resistance R16 one end, another termination polar capacitor C18 positive poles of resistance R14, Polar capacitor C18 negative poles, the resistance R16 other ends meet COM, and the pins of power supply chip U7 the 3rd meet COM by electric capacity C20, power supply The pins of chip U7 the 4th meet COM.

Power supply chip U3 second pins connect 24V DC voltages and polar capacitor C10 positive poles, polar capacitor C10 negative poles respectively The pins of power supply chip U3 first and COM are met respectively, and the pins of power supply chip U3 the 6th output 3.3V DC voltages simultaneously connect polarity electricity Hold C9 positive poles, polar capacitor C9 negative poles, the pins of power supply chip U3 the 7th are grounded.

The pins of voltage stabilizing chip U4 first connect 3.3V DC voltages, and the pins of voltage stabilizing chip U4 the 3rd meet voltage stabilizing chip U4 respectively One pin, electric capacity C15 one end, electric capacity C15 other ends ground connection, voltage stabilizing chip U4 second pins ground connection, voltage stabilizing chip U4 the 5th draw Pin exports 2.8V DC voltages and connects polar capacitor C11 positive poles, and polar capacitor C11 negative poles ground connection, voltage stabilizing chip U4 the 4th draws Pin is grounded by electric capacity C16.

The pins of voltage stabilizing chip U5 first connect 3.3V DC voltages, the pins of voltage stabilizing chip U5 the 3rd, electric capacity C14 one end respectively, The electric capacity C14 other ends, voltage stabilizing chip U5 second pins are grounded, the pins of voltage stabilizing chip U5 the 5th output 1.8V DC voltages and company Polar capacitor C12 positive poles, polar capacitor C12 negative poles ground connection are connect, the pins of voltage stabilizing chip U5 the 4th are grounded by electric capacity C13.

As shown in figure 3, control module includes microcontroller U1 and its peripheral circuit, microcontroller U1 is used STM32F446RC/E chips, the energy-conserving product that STM32F446 series of products are a highly integrated, there is high-performance and abundant company Connecing property, Flash 512KB.Under 180MHz frequencies, when being performed from Flash, STM32F446 can provide 225DMIPS/ 608CoreMark performances, DSP instructions and FPU Float Point Unit expand the application of product.Chip have 4 USART, 2 Speed up to 11.25Mbit/s UART, 4 speed up to 45Mbit/s SPI, 3 there are new optional digital filter functions I²C, 2 CAN, SDIO, HDMICEC and utilizing camera interface, 128KB sram memorys space, can be with the direct phase of camera Even, Flashh and SRAM can be achieved to be used in combination, increases amount of ram, handle larger dot matrix image, calculating speed is fast.

Control module peripheral circuit attachment structure is：

The pins of microcontroller STM32F446 the 28th are grounded by resistance R21；Microcontroller STM32F446 the 47th, 31,18, 63rd, 12 pins are directly grounded, and the pins of microcontroller STM32F446 the 5th connect the pins of crystal oscillator Y2 the 3rd, microcontroller by resistance R7 The pins of STM32F446 the 60th are grounded by resistance R22, and the pins of microcontroller STM32F446 the 7th are grounded by electric capacity C25, micro-control The pins of device STM32F446 the 7th processed connect 3.3V DC voltages by resistance R20, and the pins of microcontroller STM32F446 the 30th pass through electricity Hold C3 ground connection, the pins of microcontroller STM32F446 the 13rd meet 3.3V DC voltages, microcontroller STM32F446 by inductance L2 1st, 64,48,32,19 pins connect 3.3V DC voltages, the pins of crystal oscillator Y2 the 4th connect 3.3V DC voltages and electric capacity C7 respectively One end, the electric capacity C7 other ends, crystal oscillator Y2 second pins are grounded.

As shown in figure 4, described photographing module using OV7725 cameras U2, OV7725 be 300,000 pixel 640 × 480, SCCB interfaces, shooting angle is big, can capture larger throwing spray workpiece image.Because contain camera inside STM32F446 The driving hardware of chip, it is interfacing to save cost, play more high-quality performance.

Camera U2 circuit connection structure is：

Camera U2 D0-D7 ports connect microcontroller STM32F446 PC12-PC5 ports, camera U2 respectively 17 pins connect the pins of microcontroller STM32F446 the 22nd, and the pins of camera U2 the 9th meet microcontroller STM32F446 the 20th and drawn Pin, the pins of camera U2 the 7th connect the pins of microcontroller STM32F446 the 34th, and the pins of camera U2 the 13rd connect microcontroller The pins of STM32F446 the 41st, the pins of camera U2 the 8th connect the pins of microcontroller STM32F446 the 21st, and camera U2 the 5th draws Pin connects the pins of microcontroller STM32F446 the 33rd, and the pins of camera U2 the 3rd connect the pins of microcontroller STM32F446 the 55th, taken the photograph As the pins of head U2 the 6th connect the pins of microcontroller STM32F446 the 29th.

The pins of camera U2 the 5th connect 2.8V DC voltages by resistance R3, and the pins of camera U2 the 3rd are connect by resistance R4 2.8V DC voltages, the pins of camera U2 the 17th are grounded by resistance R5, and the pins of camera U2 the 13rd are connect by resistance R6 The pins of crystal oscillator Y1 the 3rd, the pins of camera U2 the 6th connect 2.8V DC voltages by resistance R1, and the pins of camera U2 the 6th pass through Electric capacity C1 is grounded, and the pins of camera U2 the 8th are grounded by resistance R2, and the pins of camera U2 the tenth are grounded by electric capacity C2, shooting Head U2 the 15th pins, second pin are grounded, and the pins of camera U2 the 4th connect 2.8V DC voltages, camera by inductance L1 The pins of U2 the 4th are grounded by electric capacity C4, and the pins of camera U2 the 11st connect 2.8V DC voltages, the pins of camera U2 the 11st It is grounded by electric capacity C5, crystal oscillator Y1 second pins ground connection, the pins of crystal oscillator Y1 the 4th connect 3.3V DC voltages and electric capacity C6 mono- respectively End, electric capacity C6 other ends ground connection.

Electromagnetic isolation chip ADUM1311 can be set in order to prevent external interference, between photographing module and host computer, it is real The electromagnetism and security isolation of existing photographing module and host computer.

As shown in figure 5, the memory chip U6 in memory module uses AT24C02 chips, memory, which is used to deposit, joins Number or workpiece species, can also be used as figure temporarily providing room.

Memory chip U6 circuit connection structure is：

Memory chip U6 the 1st, 2,3,4,7 pins are grounded, and the pins of memory chip U6 first are connect by electric capacity C8 3.3V DC voltages, the pins of memory chip U6 the 8th connect 3.3V DC voltages, and the pins of memory chip U6 the 6th pass through point failure R8 connects 3.3V DC voltages, and the pins of memory chip U6 the 5th meet 3.3V DC voltages, memory chip U6 by point failure R9 The pins of 6 pins connection microcontroller STM32F446 the 58th, the pins of memory chip U6 the 5th connection microcontroller STM32F446 the 10 pins.

As shown in fig. 6, described photoelectric detective circuit is perceived with a pair of infrared transmitting tubes, infrared receiving tube throws spray workpiece Camera site.Transmitting tube is amplified using triode, and reception pipe receives the region of light conduction using optocoupler TLP181, more to meet Be in the light situation caused by species workpiece.

The circuit connecting relation of photoelectric detective circuit is：

The positive pole of infrared transmitting tube connects 3.3V DC voltages by resistance R26, and the negative pole of infrared transmitting tube meets triode Q3 Colelctor electrode, triode Q3 grounded emitters, triode Q3 base stages connect the pins of microcontroller STM32F446 the 8th by resistance R33； Infrared receiving tube positive pole connects 3.3V DC voltages and resistance R30 one end respectively by resistance R27, and the resistance R30 other ends are OUTPUT_2 output ends are simultaneously connected with the pins of optocoupler U13 the 6th, and OUTPUT_2 output ends are connected with throwing shot blasting equipment, infrared receiver Pipe negative pole connects the pins of optocoupler U13 first, and the pins of optocoupler U13 the 3rd and the 4th pin are grounded.

As shown in fig. 7, motor control module includes drive circuit and micromachine Motor, micromachine Motor is due to control Camera baffle mechanism processed, the master chip optocoupler U12 of drive circuit use TLP181 chips, realize Phototube Coupling, meanwhile, it is anti- The only larger damage device of DC micromotor starting current, triode Q2 is driven using the BC847 of relatively high power and excessively stream Protection.

Entirely the circuit connecting relation of motor control module is：

The pins of optocoupler U12 first connect 3.3V DC voltages and resistance R31 one end respectively by resistance R28, and resistance R31 is another End connects the pins of microcontroller STM32F446 the 8th and resistance R32 one end respectively, and resistance R32 is another to terminate triode Q4 base stages, Triode Q4 grounded emitters, triode Q4 colelctor electrodes connect the pins of optocoupler U12 the 3rd, and the pins of optocoupler U12 the 6th pass through resistance R29 24V DC voltages and resistance R25 one end, another termination triode Q2 colelctor electrodes of resistance R25 are connect respectively, and triode Q2 base stages connect light The pins of coupling U12 the 4th, optocoupler U12 emitter stages connect micromachine Motor control terminals.

Cue module as shown in Figure 8, master chip are model TLP181 optocoupler U8, and the pins of optocoupler U8 first lead to Cross resistance R18 and connect 3.3V DC voltages, the pins of optocoupler U8 the 3rd meet the pins of microcontroller STM32F446 the 11st, optocoupler U8 the 4th Pin is grounded, and the pins of optocoupler U8 the 6th are OUTPUT_1 output ends and pass through resistance R17 connection 3.3V DC voltages, OUTPUT_1 Output end connects electric control system by data wire, realizes that cue interacts.

As shown in figure 9, RS485 communication modules include photoelectric isolating circuit and RS485 circuits, main body is phase inverter U9, number Word isolator U10 and 485 communication chip U11, wherein, digital isolator U10 models ADUM1311,485 communication chip U11's Model SP3485EN, phase inverter U9 model 74HC14.In addition, RS485 circuits are pressed down using lightning protection diode DT1, transient state Diode D5 processed carries out lightning-protection electromagnetic interference.

The circuit connecting relation of RS485 communication modules is：

The pins of phase inverter U9 first connect the pins of microcontroller STM32F446 the 59th, and the pins of phase inverter U9 the 13rd connect micro-control The pins of device STM32F446 the 61st processed, the pins of phase inverter U9 the 4th meet the pins of microcontroller STM32F446 the 62nd, phase inverter U9 Five pins connect phase inverter U9 second pins, and the pins of phase inverter U9 the 14th connect 3.3V DC voltages and electric capacity C21 one end respectively, The electric capacity C21 other ends are grounded, and the pins of phase inverter U9 the 7th ground connection, the pins of phase inverter U9 the 11st meet phase inverter U9 the 12nd and drawn Pin, the pins of phase inverter U9 the 3rd connect the pins of phase inverter U9 the 8th, and the pins of phase inverter U9 the 9th meet digital isolator U10 the 5th and drawn Pin, the pins of phase inverter U9 the tenth connect the pins of digital isolator U10 the 3rd, and the pins of phase inverter U9 the 6th meet digital isolator U10 Four pins, the pin sending and receiving optical diode D6 negative poles of phase inverter U9 the 6th, it is straight that light emitting diode D6 positive poles by resistance R24 meet 3.3V Flow voltage.

Digital isolator U10 second pins, the 8th pin ground connection, the pins of digital isolator U10 first connect 3.3V direct currents Press and be grounded by electric capacity C22, the pins of digital isolator U10 the 16th connect 5V DC voltages and meet COM by electric capacity C23, number The pins of word isolator U10 the 15th, the 9th pin meet COM, and the pins of digital isolator U10 the 12nd meet 485 communication chip U11 One pin, the pins of digital isolator U10 the 14th connect 485 communication chip U11 second pins and the 3rd pin respectively, numeral every The pins of 485 communication chip U11 the 4th are connect from the pins of device U10 the 13rd.

The pins of 485 communication chip U11 the 5th meet COM, and the pins of 485 communication chip U11 the 6th are output terminals A 1 and pass through electricity Resistance R23 connects 5V DC voltages, and the pins of 485 communication chip U11 the 7th are output end B1 and connect COM, 485 communications by resistance R19 The pins of chip U11 the 8th connect 5V DC voltages and meet COM, lightning protection diode DT1, Transient Suppression Diode D5 by electric capacity C24 It is arranged in parallel between output terminals A 1 and output end B1, output terminals A 1, output end B1 connect electric control system by data wire.

As shown in Figure 10, described light supply modular circuit drives 2 LEDs to camera using triode Q1 amplifications Light filling, shoot clear image.

The circuit connecting relation of light supply module is：

Triode Q1, triode Q1 emitter stage connect 3.3V DC voltages and resistance R12 one end, the resistance R12 other ends respectively Connect the pins of microcontroller STM32F446 the 24th and resistance R15 one end respectively, another termination triode Q1 base stages of resistance R15, three Pole pipe Q1 colelctor electrodes difference connecting resistance R11 one end, resistance R13 one end, resistance R11 other end sending and receiving optical diode D1 positive poles, electricity R13 other end sending and receiving optical diode D2 positive poles are hindered, light emitting diode D1 negative poles, light emitting diode D2 negative poles are grounded.

After the workpiece pattern recognition device of foregoing description is applied into whole throwing pressure spray process, the system block diagram actually implemented is such as Shown in Figure 11, in the system shown in Figure 11, operation principle is：Shot blasting equipment operation is thrown, is got in touch with and believed by control system Workpiece recognition device number is given, when Workpiece recognition device obtains workpiece by photoelectric detective circuit, is shot, then carries out image Processing, host computer is waited to transfer order by RS485 data.Species and orientation according to workpiece is obtained carry out throwing spray angle degree and throwing The parameter adjustments such as time are sprayed, realize that intelligence spray is thrown.

It should be pointed out that embodiment described above can make those skilled in the art that this practicality be more fully understood New concrete structure, but do not limit the utility model in any way and create.Therefore, although specification and drawings and examples The utility model is created and has been carried out being described in detail, it will be understood by those skilled in the art, however, that still can be to this reality Modified with new creation or equivalent substitution；And the technical side of all spirit and scope for not departing from the utility model creation Case and its improvement, it is encompassed by the utility model and created among the protection domain of patent.

Claims (10)

1. applied to the workpiece pattern recognition device for throwing shot blasting equipment, it is characterised in that including power supply module, control module, take the photograph It is described as module, memory module, photoelectric detective circuit, motor control module, cue module and RS485 communication modules Power supply module include 24V DC voltage input ends, and provide 5V, 3.3V, 2.8V, 1.8V tetra- kinds of DC voltage output ends；Institute The control module stated includes microcontroller STM32F446 and its peripheral circuit；Described photographing module includes OV7725 cameras, OV7725 cameras are electrically connected by DCMI buses and controlling bus with microcontroller STM32F446；Described memory module Electrically connected using AT24C02 storage chips and with microcontroller STM32F446；The control terminal and micro-control of the photoelectric detective circuit Device STM32F446 electrical connections processed, the output end of photoelectric detective circuit are connected with throwing the photoelectric sensor in shot blasting equipment；Described Motor control module includes drive circuit and micromachine, described drive circuit input and microcontroller STM32F446 electricity Connection, drive circuit output end connection micromachine；The output end of cue module passes through photoelectric isolated chip ADUM1311 Microcontroller STM32F446 is connected, the output end for getting in touch with wire size module connects shot-blasting machine control system by data wire；RS485 Communication module includes photoelectric isolating circuit and RS485 circuits, and photoelectric isolating circuit input connects microcontroller STM32F446, Photoelectric isolating circuit output end connects RS485 circuit input ends, and RS485 circuit output ends cross data wire connection shot-blasting machine control system System.

2. the workpiece pattern recognition device according to claim 1 for being applied to throw shot blasting equipment, it is characterised in that workpiece mould Formula identification device also includes light supply module, and control terminal and the microcontroller STM32F446 of described light supply module connect Connect.

3. the workpiece pattern recognition device according to claim 2 for being applied to throw shot blasting equipment, it is characterised in that described Light supply module includes triode Q1, and triode Q1 emitter stages connect 3.3V DC voltages and resistance R12 one end, resistance respectively The R12 other ends connect the pins of microcontroller STM32F446 the 24th and resistance R15 one end, another termination triodes of resistance R15 respectively Q1 base stages, triode Q1 colelctor electrodes difference connecting resistance R11 one end, resistance R13 one end, resistance R11 other end sending and receiving optical diodes D1 positive poles, resistance R13 other end sending and receiving optical diode D2 positive poles, light emitting diode D1 negative poles, light emitting diode D2 negative poles connect Ground.

4. the workpiece pattern recognition device according to claim 1 or 2 for being applied to throw shot blasting equipment, it is characterised in that supply Electric module includes power supply chip U7, power supply chip U3, voltage stabilizing chip U4, voltage stabilizing chip U5, power supply chip U7 the first pin, the Seven pins, the 8th pin are connected as a single entity and are connected with resistance R10 one end, and the resistance R10 other ends connect power supply chip U7 respectively Six pins, polar capacitor C19 positive poles, diode D3 negative poles, polar capacitor C19 negative poles meet COM, and it is straight that diode D3 positive poles meet 24V Flow voltage；Power supply chip U7 second pins connect inductance L3 one end, voltage-regulator diode D4 negative poles respectively, and the inductance L3 other ends connect respectively Inductance L4 one end, polar capacitor C18 positive poles, inductance L4 other ends output 5V DC voltages are simultaneously connected with polar capacitor C17 positive poles, Voltage-regulator diode D4 positive poles, polar capacitor C17 negative poles meet COM, the pins of power supply chip U7 the 5th difference connecting resistance R14 one end, Resistance R16 one end, another termination polar capacitor C18 positive poles of resistance R14, polar capacitor C18 negative poles, the resistance R16 other ends connect COM, the pins of power supply chip U7 the 3rd meet COM by electric capacity C20, and the pins of power supply chip U7 the 4th meet COM；Power supply chip U3 second Pin connects 24V DC voltages and polar capacitor C10 positive poles respectively, and polar capacitor C10 negative poles meet power supply chip U3 first and drawn respectively Pin and COM, the pins of power supply chip U3 the 6th output 3.3V DC voltages simultaneously connect polar capacitor C9 positive poles, and polar capacitor C9 is born Pole, the pins of power supply chip U3 the 7th are grounded；The pins of voltage stabilizing chip U4 first connect 3.3V DC voltages, and voltage stabilizing chip U4 the 3rd draws Pin connects the pins of voltage stabilizing chip U4 first, electric capacity C15 one end, electric capacity C15 other ends ground connection respectively, and voltage stabilizing chip U4 second pins connect Ground, the pins of voltage stabilizing chip U4 the 5th output 2.8V DC voltages simultaneously connect polar capacitor C11 positive poles, and polar capacitor C11 negative poles connect Ground, the pins of voltage stabilizing chip U4 the 4th are grounded by electric capacity C16；The pins of voltage stabilizing chip U5 first connect 3.3V DC voltages, steady respectively The pins of chip U5 the 3rd, electric capacity C14 one end are pressed, the electric capacity C14 other ends, voltage stabilizing chip U5 second pins are grounded, voltage stabilizing chip The pins of U5 the 5th export 1.8V DC voltages and connect polar capacitor C12 positive poles, polar capacitor C12 negative poles ground connection, voltage stabilizing chip The pins of U5 the 4th are grounded by electric capacity C13.

5. the workpiece pattern recognition device according to claim 1 or 2 for being applied to throw shot blasting equipment, it is characterised in that micro- The pins of controller STM32F446 the 28th are grounded by resistance R21；Microcontroller STM32F446 the 47th, 31,18,63,12 pins It is directly grounded, the pins of microcontroller STM32F446 the 5th meet the pins of crystal oscillator Y2 the 3rd, microcontroller STM32F446 by resistance R7 60th pin is grounded by resistance R22, and the pins of microcontroller STM32F446 the 7th are grounded by electric capacity C25, microcontroller The pins of STM32F446 the 7th connect 3.3V DC voltages by resistance R20, and the pins of microcontroller STM32F446 the 30th pass through electric capacity C3 Ground connection, the pins of microcontroller STM32F446 the 13rd connect 3.3V DC voltages by inductance L2, microcontroller STM32F446 the 1st, 64th, 48,32,19 pins connect 3.3V DC voltages, and the pins of crystal oscillator Y2 the 4th connect 3.3V DC voltages and electric capacity C7 one end respectively, The electric capacity C7 other ends, crystal oscillator Y2 second pins are grounded.

6. the workpiece pattern recognition device according to claim 1 or 2 for being applied to throw shot blasting equipment, it is characterised in that institute The photographing module stated connects microcontroller STM32F446's respectively using OV7725 camera U2, camera U2 D0-D7 ports PC12-PC5 ports, the pins of camera U2 the 17th connect the pins of microcontroller STM32F446 the 22nd, and the pins of camera U2 the 9th connect The pins of microcontroller STM32F446 the 20th, the pins of camera U2 the 7th connect the pins of microcontroller STM32F446 the 34th, camera The pins of U2 the 13rd connect the pins of microcontroller STM32F446 the 41st, and the pins of camera U2 the 8th meet microcontroller STM32F446 21 pins, the pins of camera U2 the 5th connect the pins of microcontroller STM32F446 the 33rd, and the pins of camera U2 the 3rd connect microcontroller The pins of STM32F446 the 55th, the pins of camera U2 the 6th connect the pins of microcontroller STM32F446 the 29th；

The pins of camera U2 the 5th connect 2.8V DC voltages by resistance R3, and the pins of camera U2 the 3rd meet 2.8V by resistance R4 DC voltage, the pins of camera U2 the 17th are grounded by resistance R5, and the pins of camera U2 the 13rd connect crystal oscillator by resistance R6 The pins of Y1 the 3rd, the pins of camera U2 the 6th connect 2.8V DC voltages by resistance R1, and the pins of camera U2 the 6th pass through electric capacity C1 is grounded, and the pins of camera U2 the 8th are grounded by resistance R2, and the pins of camera U2 the tenth are grounded by electric capacity C2, camera U2 15th pin, second pin are grounded, and the pins of camera U2 the 4th meet 2.8V DC voltages, camera U2 by inductance L1 Four pins are grounded by electric capacity C4, and the pins of camera U2 the 11st connect 2.8V DC voltages, and the pins of camera U2 the 11st pass through Electric capacity C5 is grounded, and crystal oscillator Y1 second pins ground connection, the pins of crystal oscillator Y1 the 4th connect 3.3V DC voltages and electric capacity C6 one end respectively, electricity Hold C6 other ends ground connection.

7. the workpiece pattern recognition device according to claim 1 or 2 for being applied to throw shot blasting equipment, it is characterised in that light Power detection circuit includes outer transmitting tube and outer reception pipe, and the positive pole of infrared transmitting tube connects 3.3V DC voltages by resistance R26, red The negative pole of outer transmitting tube connects triode Q3 colelctor electrodes, triode Q3 grounded emitters, and triode Q3 base stages are connect micro- by resistance R33 The pins of controller STM32F446 the 8th；Infrared receiving tube positive pole connects 3.3V DC voltages and resistance R30 mono- respectively by resistance R27 End, the resistance R30 other ends are OUTPUT_2 output ends and are connected with the pins of optocoupler U13 the 6th that OUTPUT_2 output ends are sprayed with throwing Ball equipment connects, and infrared receiving tube negative pole connects the pins of optocoupler U13 first, and the pins of optocoupler U13 the 3rd and the 4th pin are grounded.

8. the workpiece pattern recognition device according to claim 1 or 2 for being applied to throw shot blasting equipment, it is characterised in that electricity Machine control module includes drive circuit and micromachine Motor, and described drive circuit includes optocoupler U12, and optocoupler U12 first draws Pin connects 3.3V DC voltages and resistance R31 one end respectively by resistance R28, and the resistance R31 other ends connect microcontroller respectively The pins of STM32F446 the 8th and resistance R32 one end, another termination triode Q4 base stages of resistance R32, triode Q4 emitter stages connect Ground, triode Q4 colelctor electrodes connect the pins of optocoupler U12 the 3rd, and the pins of optocoupler U12 the 6th connect 24V direct currents respectively by resistance R29 Pressure and resistance R25 one end, another termination triode Q2 colelctor electrodes of resistance R25, triode Q2 base stages connect the pins of optocoupler U12 the 4th, Optocoupler U12 emitter stages connect micromachine Motor control terminals.

9. the workpiece pattern recognition device according to claim 1 or 2 for being applied to throw shot blasting equipment, it is characterised in that connection Network signaling module master chip is model TLP181 optocoupler U8, and the pins of optocoupler U8 first connect 3.3V direct currents by resistance R18 Pressure, the pins of optocoupler U8 the 3rd connect the pins of microcontroller STM32F446 the 11st, the pins of optocoupler U8 the 4th ground connection, and optocoupler U8 the 6th draws Pin is OUTPUT_1 output ends and connected by resistance R17 connection 3.3V DC voltages, OUTPUT_1 output ends by data wire Electric control system, realize that cue interacts.

10. the workpiece pattern recognition device according to claim 1 or 2 for being applied to throw shot blasting equipment, it is characterised in that institute The RS485 communication modules stated include photoelectric isolating circuit and RS485 circuits, photoelectric isolating circuit include phase inverter U9, numeral every From device U10, RS485 circuits include 485 communication chip U11, and the pins of phase inverter U9 first meet microcontroller STM32F446 the 59th and drawn Pin, the pins of phase inverter U9 the 13rd connect the pins of microcontroller STM32F446 the 61st, and the pins of phase inverter U9 the 4th connect microcontroller The pins of STM32F446 the 62nd, the pins of phase inverter U9 the 5th connection phase inverter U9 second pins, the pins of phase inverter U9 the 14th difference Connect 3.3V DC voltages and electric capacity C21 one end, electric capacity C21 other ends ground connection, the pins of phase inverter U9 the 7th ground connection, phase inverter U9 the 11 pins connect the pins of phase inverter U9 the 12nd, and the pins of phase inverter U9 the 3rd meet the pins of phase inverter U9 the 8th, phase inverter U9 the 9th Pin connects the pins of digital isolator U10 the 5th, and the pins of phase inverter U9 the tenth meet the pins of digital isolator U10 the 3rd, phase inverter U9 6th pin connects the pins of digital isolator U10 the 4th, the pin sending and receiving optical diode D6 negative poles of phase inverter U9 the 6th, light emitting diode D6 positive poles connect 3.3V DC voltages by resistance R24；Digital isolator U10 second pins, the 8th pin ground connection, digital isolator The pins of U10 first connect 3.3V DC voltages and are grounded by electric capacity C22, and the pins of digital isolator U10 the 16th connect 5V direct currents Press and COM is connect by electric capacity C23, the pins of digital isolator U10 the 15th, the 9th pin meet COM, digital isolator U10 the tenth Two pins connect 485 the first pins of communication chip U11, and the pins of digital isolator U10 the 14th meet 485 communication chip U11 respectively Second pin and the 3rd pin, the pins of digital isolator U10 the 13rd connect the pins of 485 communication chip U11 the 4th；485 communication cores The pins of piece U11 the 5th meet COM, and the pins of 485 communication chip U11 the 6th are output terminals A 1 and connect 5V DC voltages by resistance R23, The pins of 485 communication chip U11 the 7th are output end B1 and meet COM by resistance R19, and the pins of 485 communication chip U11 the 8th meet 5V DC voltage simultaneously meets COM by electric capacity C24, and lightning protection diode DT1, Transient Suppression Diode D5 are arranged in parallel in the and of output terminals A 1 Between output end B1, output terminals A 1, output end B1 connect electric control system by data wire.