CN2851647Y - Intelligent air compressor controller - Google Patents
Intelligent air compressor controller Download PDFInfo
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- CN2851647Y CN2851647Y CN 200520047596 CN200520047596U CN2851647Y CN 2851647 Y CN2851647 Y CN 2851647Y CN 200520047596 CN200520047596 CN 200520047596 CN 200520047596 U CN200520047596 U CN 200520047596U CN 2851647 Y CN2851647 Y CN 2851647Y
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Abstract
The utility model relates to an intelligent air compressor control device which comprises a main controller and an actuating unit circuit, wherein the main controller is composed of a single-chip computer CPU1, an analog quantity measuring circuit connected with the single-chip computer CPU1, a digital-to-analogue converting circuit, a keyboard circuit, a liquid crystal display circuit, a process monitor display circuit, an RS422 communication circuit, and an RS485 communication circuit; the main controller can be in integrated control with multiple intelligent air compressors through an RS485 bus to obtain; the actuating unit circuit is composed of the single-chip computer CPU2, the communication circuit RS422 connected with the single-chip computer CPU2, a phase sequence discrimination circuit, a switching value input circuit, a switching value output circuit, and a relay component connected with the switching value output circuit; the main controller is connected with the actuating unit circuit through the RS422 bus. The utility model adopts the single-chip computers CPU1 and CPU2 to control, and the dynamic detecting, display, alarm, and control for the run parameters of the air compressor, such as temperature, pressure, run time, overload, etc., can be automatically carried out by the utility model.
Description
Technical field
The utility model relates to a kind of control circuit that is arranged on the air compressor, relates in particular to a kind ofly to be arranged on being used on the intelligent air compressor and to control the intelligent air compressor control gear of intelligent air compressor work.
Background technique
At present, pressurized air is the second largest power source that is only second to electric power in the world, is again the technology source of the gas that serves many purposes, and its application area spreads all over each field.The air compressor basic principle is to utilize motor to drive machinery, and gas compression to required pressure is also exported.A kind of control gear of prior art air compressor only relates to the control of switching signal, and control circuit is realized sequence control by relay logic control circuit or intergrated circuit.
See also shown in Figure 1ly, the control circuit of a kind of prior art air compressor A100 is made up of relay logic control circuit A10, start button A11, stop button A12, main motor overload protective circuit 13, fan motor overload protecting circuit 14, contactor group A20, main motor A21 and fan motor A22; The input end of relay logic control circuit A10 is connected with start button A11, stop button A12, main motor overload protective circuit A13, fan motor overload protecting circuit A14 respectively, the output terminal of relay logic control circuit A10 is connected with each signal input part of the contactor group A20 of air compressor A100 respectively, and the output terminal of contactor group A20 is connected with fan motor A22 with main motor A21 respectively; The exhaust temperature signal of air compressor A100, barrel of oil and gas temperature signal, discharge pressure signal and barrel of oil and gas pressure signal be input temp Table A 15, thermometer A16, pressure gauge A17, pressure gauge A18 respectively, shows each temperature value and force value.
The operation of above-mentioned prior art air compressor is manually controlled by operator fully, operator are by behind " startup " button, under the control of relay logic control circuit, the main motor of air compressor is moved under star fashion, by time relay time-delay a period of time (about several seconds, decide according to power of motor) after, the main motor of air compressor switches under the triangle mode and moves.When main motor or fan motor transship, main motor overload protective circuit or fan motor overload protecting circuit send signal and input to the relay logic control circuit, and relay logic control circuit and contactor group open circuit, and main motor or fan motor stop operating.
The shortcoming that the control circuit of this prior art air compressor exists is:
1. the prior art air compressor is in running, and operator need constantly observe data presented such as thermometer, pressure gauge and carry out the adjustment of compressor operation state, and labor intensity of operating staff is big;
2. the prior art air compressor is not owing to there is adjusting control circuit automatically, and therefore, analog quantity parameters such as pressure, temperature can't accurately be regulated;
3. the operational efficiency of prior art air compressor and Security are low.
Summary of the invention
The purpose of this utility model is to provide a kind of intelligent air compressor control gear, it can realize the delivery temperature and the pressure of automatic adjusting, monitoring air compressor, automaticity height not only, alleviated labor intensity of operating personnel, improve the manufacturing efficiency of air compressor, and powerful, strong anti-interference performance, improved the operational safety performance of air compressor, made it in the industrial and mining enterprise of work condition environment complexity, can both use.
The purpose of this utility model is achieved through the following technical solutions: the intelligent air compressor control gear, be arranged on the intelligent air compressor, and be characterized in that this control gear comprises master controller, performance element circuit;
Described master controller is made up of the RS485 bus of singlechip CPU 1, the analog measurement circuit that connects singlechip CPU 1, D/A converting circuit, keyboard circuit, liquid crystal display circuit, flow monitoring display circuit, RS422 communication circuit, RS485 communication circuit, power circuit and connection RS485 communication circuit; The analog measurement circuit is connected with pressure transducer with the temperature transducer of intelligent air compressor respectively, and D/A converting circuit is connected with each solenoid valve of air compressor respectively;
On the described RS485 bus and connect many intelligent air compressors, two communication ends of the RS485 communication circuit of the master controller of intelligent air compressor are connected with the RS485 bus respectively, and the singlechip CPU 1 of master controller is by RS485 bus and a plurality of intelligent air compressor bi-directional transfer of data and the order that are attempted by on the RS485 bus;
Described performance element circuit is made up of the relay assembly of singlechip CPU 2, the RS422 communication circuit that connects singlechip CPU 2, phase sequence cognition circuit, switching value input circlult, switching value output circuit, connection switching value output circuit; Described switching value input circlult is connected with main motor overload circuit with the blower fan overload circuit of intelligent air compressor respectively; Described relay assembly is connected with the contactor group of intelligent air compressor;
RS422 communication circuit in the described master controller is connected with RS422 communication circuit in the performance element circuit by the RS422 bus, and master controller passes through RS422 bus and performance element circuit bi-directional transfer of data and order.
Above-mentioned intelligent air compressor control gear, wherein, described analog measurement circuit is made up of four road circuit structures identical analog measurement element circuit and MUX; Wherein: the input end of first via analog measurement element circuit is connected with the output terminal of the exhaust gas temperature sensor of intelligent pressure control machine, the input exhaust temperature signal; The input end of the second road analog measurement element circuit is connected with the output terminal of the barrel of oil and gas temperature transducer of intelligent pressure control machine, input barrel of oil and gas temperature signal; The input end of Third Road analog measurement element circuit is connected with the output terminal of the back pressure transducer of intelligent pressure control machine, the input discharge pressure signal; The input end of the four road analog measurement element circuit is connected with the output terminal of the barrel of oil and gas pressure transducer of intelligent pressure control machine, input barrel of oil and gas pressure signal; The output terminal of four road analog measurement element circuits is connected with input end P1, P2, P3, the P4 of MUX respectively; The output ADC0 end of described MUX is connected with the analog amount input ADC0 end of singlechip CPU 1.
Above-mentioned intelligent air compressor control gear, in the tool, described analog measurement element circuit is made up of low-pass filter circuit, Wheatstone bridge measuring circuit and operational amplification circuit; Two output terminals of low-pass filter circuit are connected with the input end of Wheatstone bridge measuring circuit respectively, two output terminals of Wheatstone bridge measuring circuit are connected with negative end with the forward end of operational amplification circuit respectively, and the output terminal of operational amplification circuit is connected with the input end of MUX.
Above-mentioned intelligent air compressor control gear, wherein, described D/A converting circuit is made up of four road circuit structures identical D/A conversion unit circuit and MUX; The input end of four way mould conversion unit circuits is connected with each PWM1, PWM2, PWM3, the PWM4 waveform output terminal of singlechip CPU 1 respectively, input PWM1, PWM2, PWM3, PWM4 waveform; An output terminal of each D/A conversion unit circuit is connected with each corresponding input end of MUX respectively, and another output terminal analog amount AOUT1 of each D/A conversion unit circuit, analog amount AOUT2, analog amount AOUT3, analog amount AOUT4 are connected with each corresponding solenoid valve of intelligent air compressor respectively.
Above-mentioned intelligent air compressor control gear, wherein, described D/A conversion unit circuit is made up of averaging circuit and operational amplification circuit; The input end of averaging circuit is connected with each PWM waveform output terminal of CPU1 respectively, the PWM waveform transformation of singlechip CPU 1 output is become analog voltage, the output terminal of averaging circuit is connected with the input end of operational amplification circuit, and the output terminal of operational amplification circuit is connected with the control end of the solenoid valve of intelligent air compressor.
Above-mentioned intelligent air compressor control gear, wherein, described RS422 communication circuit is made up of RS422 interface chip U14 and two photo coupler U11, U12; The output terminal P6 of photo coupler U11 is connected with the RXD1 of singlechip CPU 1 end P27, and the input end P3 of photo coupler U11 is connected with RS422 interface chip U14 output terminal P2; The input end P3 of photo coupler U12 is connected with the TXD1 of singlechip CPU 1 end P28, and the output terminal P6 of photo coupler U12 is connected with RS422 interface chip U14 input end P5; RS422 interface chip U14 input end P11, P12 are connected with RS422 bus B 2, A2 respectively; RS422 interface chip U14 output terminal P9, P10 are connected with RS422 bus Y2, Z2 respectively.
Above-mentioned intelligent air compressor control gear, wherein, described RS485 communication circuit is made up of RS485 interface chip U13 and three photo coupler U8, U9, U10; The input end P2 of photo coupler U8 is connected with the CT485 Enable Pin P4 of singlechip CPU 1, and the P3 of photo coupler U8 is connected with P3 with the P2 of RS485 interface chip U13; The output terminal P6 of photo coupler U9 is connected with the data RXD0 of singlechip CPU 1 end P2, and the input end P3 of photo coupler U9 is connected with RS485 interface chip U13 input end P1; The input end P3 of photo coupler U10 is connected with the TXD0 of singlechip CPU 1 end P3, and the output terminal P6 of photo coupler U10 is connected with RS485 interface chip U13 input end P4; Communication ends P6, the P7 of RS485 interface chip U13 is connected with RS485 bus A1, B1 respectively.
Above-mentioned intelligent air compressor control gear, wherein, described phase sequence cognition circuit is made of photo coupler U82, U83, U84, diode D1, D2, D3, resistance R 21, R22, R24; The L1 end of the L3 end of photo coupler U82, the L2 end of U83, U84 is connected with P42, P43, the P11 of singlechip CPU 2 respectively, between two input ends of photo coupler U82, between two input ends of U83, between two input ends of U84 respectively and meet a diode D3, D2, D1, the input end of one end of resistance R 24 and the negative terminal of diode D3 and photo coupler U82 also connects, the input end of one end of resistance R 22 and the negative terminal of diode D2 and photo coupler U83 also connects, and the input end of an end of resistance R 21 and the negative terminal of diode D1 and photo coupler U84 also connects.
Above-mentioned intelligent air compressor control gear, wherein, described switching value input circlult by and change trail and become circuit and the identical drive circuit of many groups to form, this drive circuit is made up of reverser U2A, resistance R 1, R5, capacitor C 1; The end of resistance R 1 and R5 also connects, the other end of resistance R 5 is connected with the input end of capacitor C 1 with reverser U2A, the output terminal of reverser U2A with and change trail and become the input end of circuit to be connected, and change trail and become the output terminal of circuit to hold P2 to be connected with the MISO of singlechip CPU 2, the resistance R 1 of each drive circuit is with R5's and connect end and be connected with main motor overload circuit with the blower fan overload circuit of intelligent air compressor respectively.
Above-mentioned intelligent air compressor control gear, wherein, described switching value output circuit is changeed by string and intergrated circuit and relay assembly are formed; String changes and the serial output mos I of intergrated circuit holds, data are packed into, and LD holds, serial clock SCK end is connected with the corresponding port of singlechip CPU 2; String change and each output signal end of intergrated circuit respectively with the corresponding connection of input signal end of each relay of relay assembly, the output terminal of each relay is connected with the input end of the contactor group of intelligent air compressor respectively, is connected with peripheral circuits such as main motor, blower fan, light emitting diodes by the contactor group.
The utility model intelligent air compressor control gear makes it compared with prior art owing to adopted above-mentioned technological scheme, has following advantage and good effect:
1. parameters be preset, be revised to the utility model can according to the needs of device owing to adopt double mcu CPU1 and CPU2 control; Can be automatically the Operational Limitss such as temperature, pressure, working time, overload, air and oil strainer obstruction of air compressor be detected dynamically, show, report to the police and control; And the level of integration height, powerful, strong anti-interference performance.
2. the utility model is owing to be provided with communication circuit, and master controller and performance element circuit carry out communication by the RS422 communication circuit, are quick on the draw, and be safe and reliable; Many intelligent air compressors can be connected in parallel on the RS485 bus, realize joint control by the RS485 communication circuit.
3. the utility model is owing to be provided with the multi-analog measuring circuit, adjusting and precise control, quick; Analog amount is imported after amplifying, the resolution height, and full-scale error is little, and Linearity is good, absolute precision and relative accuracy height.
4. the utility model is owing to be provided with liquid crystal display, and demonstration contains much information, and temperature, pressure, working time and working state etc. can be presented on the liquid crystal screen simultaneously, and is more directly perceived, can allow the people come into plain view, and is convenient to monitoring and operation.
5. the utility model is because the switching value input is more, and the switching value input circlult that is provided with can use the LPT data to be converted to the serial port data and send into singlechip CPU 2, has saved the I/O port of singlechip CPU 2.
6. the utility model is converted to the parallel port data owing to be provided with the switching value output circuit with serial data, and output can drag peripheral hardwares such as relay, light emitting diode after driving; The digital signal figure place has 8,16,32, can select voluntarily.
7. the utility model plays the segregate effect of undesired signal owing to be provided with photo coupler in the communication circuit, and intelligent air compressor can effectively improve the interference free performance of device in the communication process of joint control, still can reliably transmit information under abominable working condition.
Description of drawings
Fig. 1 is the control relay circuit block diagram of prior art air compressor.
Fig. 2 is the structural representation of the utility model intelligent air compressor control gear.
Fig. 3 is the circuit block diagram of the utility model intelligent air compressor control gear.
Fig. 4 is the singlechip CPU 1 and the liquid crystal display circuit schematic diagram of the master controller of the utility model intelligent air compressor control gear.
Fig. 5 is the analog measurement circuit block diagram of the utility model intelligent air compressor control gear master controller.
Fig. 6 is the analog measurement circuit theory diagrams of the utility model intelligent air compressor control gear master controller.
Fig. 7 is the D/A converting circuit block diagram of the utility model intelligent air compressor control gear master controller.
Fig. 8 is the D/A converting circuit schematic diagram of the utility model intelligent air compressor control gear master controller.
Fig. 9 is the communication circuit schematic diagram of the utility model intelligent air compressor control gear master controller.
Figure 10 is the keyboard circuit schematic diagram of the utility model intelligent air compressor control gear master controller.
Figure 11 is the flow monitoring display circuit schematic diagram of the utility model intelligent air compressor control gear master controller.
Figure 12 is the panel layout of the utility model intelligent air compressor control gear master controller.
Figure 13 is the singlechip CPU 2 of the utility model intelligent air compressor control gear performance element and the circuit theory diagrams of phase sequence cognition circuit.
Figure 14 is the switching value input circlult schematic diagram of the utility model intelligent air compressor control gear performance element.
Figure 15 is the switching value output circuit schematic diagram of the utility model intelligent air compressor control gear performance element.
Embodiment
See also Fig. 2, shown in Figure 3, the intelligent air compressor control gear is arranged on the intelligent air compressor 100, and this control gear comprises master controller 10, performance element circuit 20.
Can and connect many intelligent air compressors 100 on the RS485 bus, two output terminals of the RS485 communication circuit 17 of the master controller 10 of intelligent air compressor 100 are connected with the RS485 bus respectively, and the singlechip CPU 1 of master controller 10 is by RS485 bus and many intelligent air compressor bi-directional transfer of data and the order that are attempted by on the RS485 bus.
The performance element circuit is made up of the relay assembly 25 of singlechip CPU 2, the RS422 communication circuit 24 that connects singlechip CPU 2, phase sequence cognition circuit 21, switching value input circlult 23, switching value output circuit 22, connection switching value output circuit 22; Switching value input circlult 23 is connected with main motor overload circuit with the blower fan overload circuit of intelligent air compressor 100 respectively; Relay assembly 25 is connected with the contactor group of intelligent air compressor 100.
In the intelligent air compressor control gear power circuit 18 of master controller 10 offer each functional circuit+5V ,+the 24V working power.
See also shown in Figure 4ly, in the figure, form by singlechip CPU 1 (model is ATmega128), liquid crystal display circuit 14 (adopt liquid crystal display, model is LG128645), crystal oscillation circuit V1 and driver U17 (the chip model of employing is ULN2003); Between the P23 of singlechip CPU 1 and P24, be connected a crystal oscillation circuit, this crystal oscillation circuit by the two ends of crystal oscillator V1 connect capacitor C 76 respectively, C77 constitutes.The P19 of singlechip CPU 1, P29, P30 are connected with P2, P6, the P7 of driver U17, the P11 of driver U17, P10 respectively with start, stop tutorial light and be connected.The P43 of singlechip CPU 1, P34, P33, P31, P30, P49, P48, P47, P46, P45, P44, P18 are connected with P4, P5, P6, P7, P8, P9, P10, P11, P12, P13, P14, the P15 of liquid crystal display respectively.Show parameters such as delivery temperature, ambient temperature, exhaust pressure, current date, current time, air-strainer time, thin separator time of oil, oil strainer time, starting time, alarm temperature, protection temperature, unloading pressure, on-load pressure value, empty time for a long time by singlechip CPU 1 control liquid crystal display.
See also shown in Figure 5ly, analog measurement circuit 11 is made up of four road circuit structures identical analog measurement element circuit 111 and MUX 112; Wherein: the input end of first via analog measurement element circuit 111 is connected with the output terminal of the exhaust gas temperature sensor of intelligent pressure control machine 100, the input exhaust temperature signal; The input end of the second road analog measurement element circuit 111 is connected with the output terminal of the barrel of oil and gas temperature transducer of intelligent pressure control machine 100, input barrel of oil and gas temperature signal; The input end of Third Road analog measurement element circuit 111 is connected with the output terminal of the back pressure transducer of intelligent pressure control machine 100, the input discharge pressure signal; The input end of the four road analog measurement element circuit 111 is connected with the output terminal of the barrel of oil and gas pressure transducer of intelligent pressure control machine 100, input barrel of oil and gas pressure signal; The output terminal of four road analog measurement element circuits 111 is connected with input end P1, P2, P3, the P4 of MUX 112 respectively; The output terminal 5 of described MUX 112 is connected with the analog amount ADC0 input end of singlechip CPU 1.
After each analogue signal input, the data of the A/D analog-to-digital conversion passage of singlechip CPU 1 are provided by analog measurement circuit 11, and analog measurement circuit 11 is sent each signal into singlechip CPU 1 and handled.What wherein the exhaust gas temperature sensor of the external intelligent pressure control machine 100 of the input end of the first via and the second road analog measurement element circuit 111 and barrel of oil and gas temperature transducer adopted is the PT100 thermal resistor, is used to monitor the barrel of oil and gas temperature and the blower fan temperature of air compressor; The back pressure transducer and the barrel of oil and gas pressure transducer of the intelligent pressure control machine 100 that Third Road and the four road analog measurement element circuit 111 are external are used to monitor the pressure at the relevant position of air compressor, as: inflator pressure, outlet pressure etc.Temperature, force value show on liquid crystal screen, according to detected temperature, force value, control the working state of air compressor, as: the blower fan temperature reaches start-up temperature, and (parameter setting) then opens blower fan; Reach protection temperature (parameter setting) as: blower fan temperature, then report to the police and stop air compressor work.
See also shown in Figure 6ly, analog measurement element circuit 111 is made up of low-pass filter circuit 111a, Wheatstone bridge measuring circuit 111b and operational amplification circuit 111c; Two output terminal P6, the P4 of low-pass filter circuit 111a are connected with the input end of Wheatstone bridge measuring circuit 111b, two output terminals of Wheatstone bridge measuring circuit 111b are connected with negative end P2 with the forward end P3 of operational amplification circuit 111c respectively, and the output terminal P1 of operational amplification circuit 111c is connected with the analog amount ADC0 input end of singlechip CPU 1.
Analog measurement element circuit 111 is made up of inductance L 6, operational amplifier U1A, resistance R 1, R3, R4, R6, R7, R8, R9, R11, capacitor C 1, C3, C4, C5; Wherein: low-pass filter circuit 111a is made up of common mode choke induction L6, capacitor C 3, and input end P1, the P3 of inductance L 6 imports RTD1-, the RTD1+ analogue signal of intelligent pressure control machine 100, and output terminal P6, the P4 of inductance L 6 also connects capacitor C 3.
Wheatstone bridge measuring circuit 111b is made up of resistance R 3, R4, R6, R8, R9, R11, C5; The P6 of resistance R 8 one ends and inductance L 6 and an end of capacitor C 3 also connect, and the end of resistance R 8 the other ends and resistance R 3 and R6 also connects; The end of resistance R 3 and R4 and power supply AVCC also connect, and an end of resistance R 4 the other ends and capacitor C 3 and an end of resistance R 9 also connect, and the P3 of an end of resistance R 11 and capacitor C 5 and the other end of resistance R 9 and operational amplifier U1A also connects.
Operational amplification circuit 111c is made up of operational amplifier U1A (the chip model of employing is TLC27L2ID), resistance R 1, R7, capacitor C 1, C4; The other end of the P2 of operational amplifier U1A and resistance R 6 be connected, between the P2 of operational amplifier U1A and P1 and connecting resistance R1 and capacitor C 1, the P1 of operational amplifier U1A is connected with resistance R 7 one ends, the other end of resistance R 7 is connected with the data input pin of capacitor C 4 one ends with MUX 112 (model is 4051), capacitor C 4 the other ends with how be connected.
The exhaust temperature signal of intelligent air compressor 100, barrel of oil and gas temperature signal, discharge pressure signal, above-mentioned each the analog measurement element circuit 111 of barrel of oil and gas pressure signal input, by MUX 112, the multi-analog collection is come in by singlechip CPU 1 timing controlled.
See also shown in Figure 7ly, D/A converting circuit 12 is made up of four road circuit structures identical D/A conversion unit circuit 121 and MUX 122; The input end of four way mould conversion unit circuits 121 is connected with each PWM1, PWM2, PWM3, the PWM4 output terminal P15,16,17,14 of singlechip CPU 1 respectively, input PWM1, PWM2, PWM3, PWM4 waveform; The output terminal of each D/A conversion unit circuit 121 is connected with each corresponding input end P1, P2, P3, the P4 of MUX 22 respectively, and another output terminals A OUT1 of D/A conversion unit circuit 121, AOUT2, AOUT3, AOUT4 are connected with the control end of each solenoid valve of intelligent air compressor 100 respectively; The output terminal 5 of MUX is connected with the analog amount ADC0 input end P61 of singlechip CPU 1.
See also shown in Figure 8ly, D/A conversion unit circuit 121 is made up of averaging circuit 121a and operational amplification circuit 121b; The input end of averaging circuit 121a is connected with the PWM waveform output terminal of CPU1, the PWM waveform transformation of singlechip CPU 1 output is become analog voltage, the output terminal of averaging circuit 121a is connected with the input end of operational amplification circuit 121b, and the output terminal of operational amplification circuit 121b is connected with the control end of the solenoid valve of intelligent air compressor.
Averaging circuit 121a is by operational amplifier U3D (the chip model of employing is TLC27L4ID), resistance R 43, R44, capacitor C 25, C26 and form; One end of resistance R 43 is connected with the PWM1 output terminal P15 of singlechip CPU 1, resistance R 43 and R44 are serially connected in the anode P12 of operational amplifier U3D, one end of capacitor C 25 respectively with resistance R 43 with R44's and connect the end be connected, being connected with the negative terminal P13 of operational amplifier U3D in addition of capacitor C 25 with an end, the two ends of capacitor C 26 respectively with resistance R 44 and operational amplifier U3D P12's and connect end, be connected.
Averaging circuit 121a becomes analog voltage with the PWM waveform transformation of singlechip CPU 1 output, through operational amplifier U5B, export the solenoid valve of analog amount control intelligent air compressor 100 on the one hand, on the other hand analog amount is fed back to the A/D interface analog amount ADC0 input end P61 of CPU1, the monitor analogue quantity output voltage.
See also shown in Figure 9, in master controller 10, comprise RS422 communication circuit 16, RS485 communication circuit 17, wherein RS422 communication circuit 16 is used for master controller 10 and performance element 20 communications: the RS485 communication circuit is used for many intelligent air compressor joint controls, carries out communication.
The input end P3 of photo coupler U12 is connected with the TXD1 serial output terminal P28 of singlechip CPU 1, be connected resistance R 68 between the P2 of photo coupler U12 and the VCC, be connected resistance R 62 between the P6 of photo coupler U12 and the+5V, the output terminal P6 of photo coupler U12 is connected with RS422 interface chip U14 input end P5, and interface chip U14 output terminal P9, P10 are connected with RS422 bus Z2, Y2 respectively.
The communication interface of RS422 communication circuit 16 is connected with RXD1 end, the TXD1 end of singlechip CPU 1, RS422 interface chip U14 is special-purpose interface chip, signal is finished level conversion by RS422 communication circuit 16, make singlechip CPU 1 and performance element communication by the RS422 bus, two photo couplers play the undesired signal buffer action, improve the interference free performance of device.
The input end P2 of photo coupler U8 is connected with the CT485 Enable Pin P4 of singlechip CPU 1, series resistor R57 between the P1 of photo coupler U8 and the VCC, the P3 of photo coupler U8 and+5V between series resistor R58, the P3 of photo coupler U8 is connected with P3 with the P2 of RS485 interface chip U13.
The input end P6 of photo coupler U9 is connected with the data RXD0 of singlechip CPU 1 end P2, be connected resistance R 63 between the P6 of photo coupler U9 and the P8, be connected resistance R 59 between the P2 of photo coupler U9 and the+5V, the P3 of photo coupler U9 is connected with the P1 of RS485 interface chip U13, and P6, the P7 of RS485 interface chip U13 is connected with RS485 bus A1, B1 respectively.
The input end P3 of photo coupler U10 is connected with the TXD0 of singlechip CPU 1 end P3, be connected resistance R 65 between the P2 of photo coupler U10 and the VCC, be connected resistance R 60 between the P6 of photo coupler U10 and the P8, the output terminal P6 of photo coupler U10 is connected with RS485 interface chip U13 input end P4; Resistance R 64 two ends are connected with P8 with the P6 of RS485 interface chip U13 respectively, and resistance R 66 two ends are connected with P7 with the P5 of RS485 interface chip U13 respectively.
See also shown in Figure 10ly, keyboard circuit 13 is by function key F1, F2, F3, F4, " start key " and " stopping " key and change startup that trail becomes circuit U 1 (model is 4021), resistance R 1, R2, R3, R4, R9, R10, R11, R12, high-voltage capacitance V4, is made of light emitting diode D1, D2, stop tutorial light forming; One normally opened contact of function key F1, F2, F3, F4, " start key " and " stopping " key respectively with and change corresponding connection of P4, P5, P6, P7, P13, P14 that trail becomes circuit U 1, and change trail and become the P3 of circuit U 1 to hold P13 to be connected with the MISO of singlechip CPU 1; Resistance R 1, R2, R3, R4, R11, R12 are serially connected in respectively between another normally opened contact and VCC of function key F1, F2, F3, F4, " start key " and " stopping " key.Resistance R 9, R10 are connected in series with the anode of light emitting diode D1, D2 respectively, be connected with P11, the P10 of drive circuit U17 respectively as the negative terminal that starts, stops light emitting diode D1, the D2 of tutorial light, the other end of resistance R 9, R10 is attempted by between VCC and high-voltage capacitance V4 one end, the other end ground connection of high-voltage capacitance V4.
Please cooperate referring to shown in Figure 12, be the panel layout of the utility model intelligent air compressor control gear master controller, is liquid crystal display 14, keyboard on the right side of the operation panel 19 of master controller 10 and promptly stops/reset button.The six press keys that keyboard circuit 13 is provided with, wherein 4 function key F1, F2, F3, F4 switch different function keys, and corresponding different display pages has different meanings." startup " and " stopping " key control intelligent air compressor starts and shuts down." promptly stop/resetting " and can when the state of emergency, stop the work of air compressor.Push button signalling by and change trail and become circuit U 1 to convert parallel signal to serial signal, send into the MISO end P13 of singlechip CPU 1.
See also shown in Figure 11ly, flow monitoring display circuit 15 is changeed by string and integrated circuit U 2, ((the chip model of employing is 4094), light emitting diode D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, DD14, resistance R 5, R6, R7, R8, R13, R14, R15, R16, R17, R18, R19, R20, high-voltage capacitance V1, V2 form U3; After the P1 of string commentaries on classics and integrated circuit U 2, U3 is connected, be connected with the P31 of singlechip CPU 1 by the data LD line of packing into, after the P2 of string commentaries on classics and integrated circuit U 2, U3 is connected, be connected with the P13 of singlechip CPU 1 by MOSI (spi bus output) line, after the P3 of string commentaries on classics and integrated circuit U 2, U3 is connected, be connected with the P11 of singlechip CPU 1 by clock SCK line, after the P15 of string commentaries on classics and integrated circuit U 2, U3 is connected, the LOE line be connected with the P32 of singlechip CPU 1 by output; String changes the also P4 of integrated circuit U 2, P5, P6, P7, P14, P13, P12, P11, string changes the also P4 of integrated circuit U 3, P5, P6 respectively with light emitting diode D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, the negative terminal of D14 is corresponding to be connected, resistance R 5, R6, R7, R8, R13, R14, R15, R16, R17, R18, R19, R20 is serially connected in light emitting diode D3 respectively, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, between the negative terminal of D14 and the power supply VCC, the two ends of electric capacity V1 respectively with the negative terminal of light emitting diode D14, ground connects, the two ends of electric capacity V2 respectively with power supply VCC, ground connects.
Please cooperate referring to shown in Figure 12; it is the panel layout of the utility model intelligent air compressor control gear master controller; in the left side of the operation panel 19 of master controller 10 be flow monitoring display circuit 15 by 11 light emitting diode D3; D4; D5; D6; D7; D8; D9; D10; D11; D12; D13; the tutorial light that D14 constitutes; wherein four is the flow chart tutorial light; be respectively " main motor overload halt indicator "; " the thin separator alarm indicator lamp of oil "; " oil strainer alarm indicator lamp "; " exhaust high temperature halt indicator " and " air-strainer alarm indicator lamp "; as which position break down, then corresponding tutorial light is bright.Other 7 is main status indicator lamp; be respectively " power supply indicator " (the controller normal power supply is bright often); " far control tutorial light " (it is bright often that air compressor carries out long-range joint control); " empty wagons is crossed halt indicator of a specified duration " (the empty standby for a long time of air compressor is bright often); " the unusual tutorial light of phase sequence " (the air compressor phase sequence is unusual; it is bright often to cause motor to reverse); " blower fan overload light "; (air compressor fan electromotor overload-alarm is bright often); " sensor alarm indicator lamp " (the temperature and pressure short circuit sensor opens circuit or to damage needs maintenance bright often) and " standby tutorial light " (standby tutorial light Chang Liang during other failure definition).
Power circuit 18 outputs two road constant voltage dc sources are made of 78 serial three terminal regulators in master controller 10.One road 5V, the general power of supplier; The power supply of another road 24V analogue quantity output circuit.
Please continue referring to Fig. 3, cooperate referring to shown in Figure 13, performance element 20 is made up of singlechip CPU 2 (model is ATmega16L-8AC), phase sequence cognition circuit 21, switching value output circuit 22, switching value input circlult 23, RS422 communication circuit 24 and relay assembly 25.RS422 communication circuit 24 is just the same with the RS422 communication circuit 16 of master controller 10.
In Figure 13, form by singlechip CPU 2 (model is ATmega16 L-8AC) and phase sequence cognition circuit 21; Between the P7 of singlechip CPU 2 and P8, be connected a crystal oscillation circuit, this crystal oscillation circuit by the two ends of crystal oscillator connect capacitor C 32 respectively, C33 constitutes.Between P21, the P22 of singlechip CPU 2, P23, P24 and VCC, be connected resistance R 34, R33, R32, R31 respectively, between P42, the P43 of singlechip CPU 2, P11 and ground, be connected resistance R 78, R79, R80 respectively.
Phase sequence cognition circuit 21 is made of photo coupler U82, U83, U84, diode D1, D2, D3, resistance R 21, R22, R24; The L1 end of the L3 end of photo coupler U82, the L2 end of U83, U84 is connected with P42, P43, the P11 of singlechip CPU 2 respectively, between two input ends of photo coupler U82, between two input ends of U83, between two input ends of U84 respectively and meet a diode D3, D2, D1, the input end of one end of resistance R 24 and the negative terminal of diode D3 and photo coupler U82 also connects, and the anode of the other end of resistance R 24, diode D3 is connected with AC275V3 end, the AC275V1 end of three phase mains respectively; The input end of one end of resistance R 22 and the negative terminal of diode D2 and photo coupler U83 also connects, and the anode of the other end of resistance R 22, diode D2 is connected with AC275V2 end, the AC275V3 end of three phase mains respectively; The input end of one end of resistance R 21 and the negative terminal of diode D1 and photo coupler U84 also connects, and the anode of the other end of resistance R 21, diode D1 is connected with AC275V1 end, the AC275V2 end of three phase mains respectively.
Photo coupler U82, U83, U84, gather the rising edge of power supply A, B, C three phase mains respectively, send singlechip CPU 2 to, differentiate the phase sequence of power supply A, B, C by software, if phase sequence not to report to the police, " the unusual tutorial light of phase sequence " is bright, thereby guarantee that main motor is nonreversible, three photo couplers play the undesired signal buffer action.
See also shown in Figure 14, switching value input circlult 23 by and change trail and become circuit 23a (model is 4021) and the identical drive circuit of many groups to form, this drive circuit is made up of reverser U2A, resistance R 1, R5, capacitor C 1; The end of resistance R 1 and R5 also connects, the other end of resistance R 5 is connected with the input end 1 of capacitor C 1 and reverser U2A, the output terminal 2 of reverser U2A with and change trail and become the input end of circuit 23a to be connected, and change trail and become the output terminal of circuit 23a to hold P2 to be connected with the MISO of singlechip CPU 2, the resistance R 1 of each drive circuit is with R5's and connect end and be connected with main motor overload circuit with the blower fan overload circuit of intelligent air compressor respectively.
Because the switching value input is more, for saving the I/O mouth of singlechip CPU 2, the utility model adopts LPT data transfer serial port data to send into.The switching value input circlult by and change trail and become circuit to convert parallel signal to serial signal, send into the MISO port of singlechip CPU 2.
See also shown in Figure 15ly, switching value output circuit 22 is changeed by string and intergrated circuit 22 (model is 4049) and relay assembly 25 are formed; String changes and the MOSI of intergrated circuit 22 holds, data are packed into, and LD holds, clock SCK end is connected with corresponding port P12, P31, the P11 of singlechip CPU 2; String change and each output signal end of intergrated circuit 22 respectively with the corresponding connection of input signal end of each relay of relay assembly 25, the output terminal of each relay is connected with the contactor group of intelligent air compressor respectively by the JS1 interface, is connected with peripheral circuits such as main motor, blower fan, light emitting diodes by the contactor group again.
The MOSI port of singlechip CPU 2 sends signal, change and intergrated circuit 22 converts serial signal to parallel signal by string, drive each relay through level conversion, export the operation that each control signal removes to control main motor, blower fan, peripheral hardwares such as control light emitting diode by relay.The digital signal figure place has 8,16,32 can select voluntarily.
The working principle of the utility model intelligent air compressor control gear is that operator can control compressor by the button on the monitoring unit panel, set Control Parameter, show the parameter that needs.Control gear shows each temperature, pressure, working time and the working state of intelligent air compressor by liquid crystal display (LCD).
After the energising of intelligent air compressor control gear, the default page of LCD, that is: first row XXXXHr. working time; XXX ℃ of the second row delivery temperature, the third line, exhaust pressure X.XXMpa.This time-control apparatus enters the Initial examination and measurement program, as: whether power phase is normal, and whether sensor connects correct reliable or the like.And will detect the fourth line that content is presented at the default page, the expression immediate status.Before not resetting, the intelligent air compressor control gear does not respond " startup " instruction.Remove fault and use " tightly stopping/reset " button.Two or more faults are arranged simultaneously, and the state display priority is high, after the removing, display priority next, all clear intact until all faults, just can start air compressor.
After the start of intelligent air compressor control gear, but whether user's query argument meets the requirements, concrete query contents method by: press " device " corresponding button and enter subordinate's subpage frame, press " maintenance " key and enter and safeguard subpage frame, safeguard that subordinate's subpage frame comprises: the air-filter replacement time; The thin separator of oil is changed the time; Oil strainer is changed the time.
Press " demonstration " key when the default page, enter display page, the user is the data variation in the necessary for monitoring air compressor immediate status at any time, as delivery temperature, and ambient temperature, exhaust pressure, and mutually current accurate time, date, time or the like.
The utility model intelligent air compressor control gear has advanced intelligent control function, and series of parameters can be set, and can select to enter the parameter setting.Carry out before parameter is provided with, LCD Display prompting input password, password is 4 position effective digitals.Initial password: 8888, can carry out parameter modification behind the input proper password.If the password input is incorrect, the rebound higher level page is provided with the page if password is imported correctly then entered parameter.Can carry out delivery temperature, ambient temperature, exhaust pressure, current date, current time, air-strainer time, thin separator time of oil, oil strainer time, starting time, alarm temperature, protection temperature, unloading pressure, on-load pressure value, the empty setting of time, baud rate, machine group #, ultimate pressure, joint control mode etc. for a long time.
In sum, model utility intelligent air compressor control gear circuit design novelty has adopted double mcu CPU1 and CPU1 control, can preset, revise parameters according to the needs of device; Can be automatically the Operational Limitss such as temperature, pressure, working time, overload, air and oil strainer obstruction of air compressor be detected dynamically, show, report to the police and control, and the level of integration height, powerful, strong anti-interference performance; Owing to be provided with the RS422 communication circuit, master controller and performance element circuit carry out communication by the RS422 interface, are quick on the draw, and be safe and reliable; Owing to be provided with the RS485 communication circuit, multiple air compressors can be connected in parallel on and realize joint control voluntarily on 485 buses.
Claims (9)
1. an intelligent air compressor control gear is arranged on the intelligent air compressor, it is characterized in that: this control gear comprises master controller, performance element circuit;
Described master controller is made up of the RS485 bus of singlechip CPU 1, the analog measurement circuit that connects singlechip CPU 1, D/A converting circuit, keyboard circuit, liquid crystal display circuit, flow monitoring display circuit, RS422 communication circuit, RS485 communication circuit, power circuit and connection RS485 communication circuit; The analog measurement circuit is connected with pressure transducer with the temperature transducer of intelligent air compressor respectively, and D/A converting circuit is connected with each solenoid valve of air compressor respectively;
On the described RS485 bus and connect many intelligent air compressors, two communication ends of the RS485 communication circuit of the master controller of intelligent air compressor are connected with the RS485 bus respectively, and the singlechip CPU 1 of master controller is by RS485 bus and a plurality of intelligent air compressor bi-directional transfer of data and the order that are attempted by on the RS485 bus;
Described performance element circuit is made up of the relay assembly of singlechip CPU 2, the RS422 communication circuit that connects singlechip CPU 2, phase sequence cognition circuit, switching value input circlult, switching value output circuit, connection switching value output circuit; Described switching value input circlult is connected with main motor overload circuit with the blower fan overload circuit of intelligent air compressor respectively; Described relay assembly is connected with the contactor group of intelligent air compressor;
RS422 communication circuit in the described master controller is connected with RS422 communication circuit in the performance element circuit by the RS422 bus, and master controller passes through RS422 bus and performance element circuit bi-directional transfer of data and order.
2. intelligent air compressor control gear according to claim 1 is characterized in that: described analog measurement circuit is made up of four road circuit structures identical analog measurement element circuit and MUX; Wherein: the input end of first via analog measurement element circuit is connected with the output terminal of the exhaust gas temperature sensor of intelligent pressure control machine, the input exhaust temperature signal; The input end of the second road analog measurement element circuit is connected with the output terminal of the barrel of oil and gas temperature transducer of intelligent pressure control machine, input barrel of oil and gas temperature signal; The input end of Third Road analog measurement element circuit is connected with the output terminal of the back pressure transducer of intelligent pressure control machine, the input discharge pressure signal; The input end of the four road analog measurement element circuit is connected with the output terminal of the barrel of oil and gas pressure transducer of intelligent pressure control machine, input barrel of oil and gas pressure signal; The output terminal of four road analog measurement element circuits is connected with input end P1, P2, P3, the P4 of MUX respectively; The output ADC0 end of described MUX is connected with the analog amount input ADC0 end of singlechip CPU 1.
3. intelligent air compressor control gear according to claim 2 is characterized in that: described analog measurement element circuit is made up of low-pass filter circuit, Wheatstone bridge measuring circuit and operational amplification circuit; Two output terminals of low-pass filter circuit are connected with the input end of Wheatstone bridge measuring circuit respectively, two output terminals of Wheatstone bridge measuring circuit are connected with negative end with the forward end of operational amplification circuit respectively, and the output terminal of operational amplification circuit is connected with the input end of MUX.
4. intelligent air compressor control gear according to claim 1 is characterized in that: described D/A converting circuit is made up of four road circuit structures identical D/A conversion unit circuit and MUX; The input end of four way mould conversion unit circuits is connected with each PWM1, PWM2, PWM3, the PWM4 waveform output terminal of singlechip CPU 1 respectively, input PWM1, PWM2, PWM3, PWM4 waveform; An output terminal of each D/A conversion unit circuit is connected with each corresponding input end of MUX respectively, and another output terminal analog amount AOUT1 of each D/A conversion unit circuit, analog amount AOUT2, analog amount AOUT3, analog amount AOUT4 are connected with each corresponding solenoid valve of intelligent air compressor respectively.
5, intelligent air compressor control gear according to claim 4 is characterized in that: described D/A conversion unit circuit is made up of averaging circuit and operational amplification circuit; The input end of averaging circuit is connected with each PWM waveform output terminal of CPU1 respectively, the PWM waveform transformation of singlechip CPU 1 output is become analog voltage, the output terminal of averaging circuit is connected with the input end of operational amplification circuit, and the output terminal of operational amplification circuit is connected with the control end of the solenoid valve of intelligent air compressor.
6. intelligent air compressor control gear according to claim 1 is characterized in that: described RS422 communication circuit is made up of RS422 interface chip U14 and two photo coupler U11, U12; The output terminal P6 of photo coupler U11 is connected with the RXD1 of singlechip CPU 1 end P27, and the input end P3 of photo coupler U11 is connected with RS422 interface chip U14 output terminal P2; The input end P3 of photo coupler U12 is connected with the TXD1 of singlechip CPU 1 end P28, and the output terminal P6 of photo coupler U12 is connected with RS422 interface chip U14 input end P5; RS422 interface chip U14 input end P11, P12 are connected with RS422 bus B 2, A2 respectively; RS422 interface chip U14 output terminal P9, P10 are connected with RS422 bus Y2, Z2 respectively.
7. intelligent air compressor control gear according to claim 1 is characterized in that: described RS485 communication circuit is made up of RS485 interface chip U13 and three photo coupler U8, U9, U10; The input end P2 of photo coupler U8 is connected with the CT485 Enable Pin P4 of singlechip CPU 1, and the P3 of photo coupler U8 is connected with P3 with the P2 of RS485 interface chip U13; The output terminal P6 of photo coupler U9 is connected with the data RXD0 of singlechip CPU 1 end P2, and the input end P3 of photo coupler U9 is connected with RS485 interface chip U13 input end P1; The input end P3 of photo coupler U10 is connected with the TXD0 of singlechip CPU 1 end P3, and the output terminal P6 of photo coupler U10 is connected with RS485 interface chip U13 input end P4; Communication ends P6, the P7 of RS485 interface chip U13 is connected with RS485 bus A1, B1 respectively.
8. intelligent air compressor control gear according to claim 1 is characterized in that: described phase sequence cognition circuit is made of photo coupler U82, U83, U84, diode D1, D2, D3, resistance R 21, R22, R24; The L1 end of the L3 end of photo coupler U82, the L2 end of U83, U84 is connected with P42, P43, the P11 of singlechip CPU 2 respectively, between two input ends of photo coupler U82, between two input ends of U83, between two input ends of U84 respectively and meet a diode D3, D2, D1, the input end of one end of resistance R 24 and the negative terminal of diode D3 and photo coupler U82 also connects, the input end of one end of resistance R 22 and the negative terminal of diode D2 and photo coupler U83 also connects, and the input end of an end of resistance R 21 and the negative terminal of diode D1 and photo coupler U84 also connects.
9. intelligent air compressor control gear according to claim 1, it is characterized in that: described switching value input circlult by and change trail and become circuit and the identical drive circuit of many groups to form, this drive circuit is made up of reverser U2A, resistance R 1, R5, capacitor C 1; The end of resistance R 1 and R5 also connects, the other end of resistance R 5 is connected with the input end of capacitor C 1 with reverser U2A, the output terminal of reverser U2A with and change trail and become the input end of circuit to be connected, and change trail and become the output terminal of circuit to hold P2 to be connected with the MISO of singlechip CPU 2, the resistance R 1 of each drive circuit is with R5's and connect end and be connected with main motor overload circuit with the blower fan overload circuit of intelligent air compressor respectively.
10. intelligent air compressor control gear according to claim 1 is characterized in that; Described switching value output circuit is changeed by string and intergrated circuit and relay assembly are formed; String changes and the serial output mos I of intergrated circuit holds, data are packed into, and LD holds, serial clock SCK end is connected with the corresponding port of singlechip CPU 2; String change and each output signal end of intergrated circuit respectively with the corresponding connection of input signal end of each relay of relay assembly, the output terminal of each relay is connected with the input end of the contactor group of intelligent air compressor respectively, is connected with peripheral circuits such as main motor, blower fan, light emitting diodes by the contactor group.
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|---|---|---|---|
| CN 200520047596 CN2851647Y (en) | 2005-12-16 | 2005-12-16 | Intelligent air compressor controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047596 CN2851647Y (en) | 2005-12-16 | 2005-12-16 | Intelligent air compressor controller |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458630C (en) * | 2005-12-16 | 2009-02-04 | 上海开通数控有限公司 | Controlling system of intelligent air compressor |
| CN102788006A (en) * | 2012-08-29 | 2012-11-21 | 上海昶嘉工业设备有限公司 | Embedded air compressor control system |
| CN101692170B (en) * | 2009-10-16 | 2013-01-09 | 北京联合大学生物化学工程学院 | Serial D/A converter circuit shared by two singlechips |
| CN102943753A (en) * | 2012-11-08 | 2013-02-27 | 杭州威龙泵业有限公司 | Electronic intelligent controller, control method and air compressor applying controller |
| CN103899523A (en) * | 2012-12-29 | 2014-07-02 | 中国科学院沈阳科学仪器股份有限公司 | Dry pump unified electric control platform system |
| CN104314791A (en) * | 2013-10-28 | 2015-01-28 | 合肥国骋新能源汽车技术有限公司 | Novel anti-emulsifying system for electric automobile air compressor |
| CN104452542A (en) * | 2014-10-21 | 2015-03-25 | 广东惠利普路桥信息工程有限公司 | Intelligent control system for synchronous chip seal vehicle |
| CN105370547A (en) * | 2014-08-28 | 2016-03-02 | 葛洲坝集团水泥有限公司 | Air compressor set with energy-saving device |
| CN105804979A (en) * | 2016-03-15 | 2016-07-27 | 哈尔滨宏万智科技开发有限公司 | Control device for air compressor |
| CN106054716A (en) * | 2016-06-27 | 2016-10-26 | 华清智芯科技（北京）有限公司 | Four-way switching value output device based on CIB-BUS bus control mode |
| CN106762530A (en) * | 2016-12-24 | 2017-05-31 | 卢高 | A kind of Based Intelligent Control reciprocating compressor |
| CN113586417A (en) * | 2021-09-01 | 2021-11-02 | 淮阴工学院 | Air compressor grading control system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100458630C (en) * | 2005-12-16 | 2009-02-04 | 上海开通数控有限公司 | Controlling system of intelligent air compressor |
| CN101692170B (en) * | 2009-10-16 | 2013-01-09 | 北京联合大学生物化学工程学院 | Serial D/A converter circuit shared by two singlechips |
| CN102788006A (en) * | 2012-08-29 | 2012-11-21 | 上海昶嘉工业设备有限公司 | Embedded air compressor control system |
| CN102943753A (en) * | 2012-11-08 | 2013-02-27 | 杭州威龙泵业有限公司 | Electronic intelligent controller, control method and air compressor applying controller |
| CN102943753B (en) * | 2012-11-08 | 2016-01-27 | 浙江威龙泵业有限公司 | A kind of electronic intelligence controller controls the method for air compressor |
| CN103899523B (en) * | 2012-12-29 | 2016-02-03 | 中国科学院沈阳科学仪器股份有限公司 | Electrical control plateform system unified by a kind of dry pump |
| CN103899523A (en) * | 2012-12-29 | 2014-07-02 | 中国科学院沈阳科学仪器股份有限公司 | Dry pump unified electric control platform system |
| CN104314791A (en) * | 2013-10-28 | 2015-01-28 | 合肥国骋新能源汽车技术有限公司 | Novel anti-emulsifying system for electric automobile air compressor |
| CN105370547A (en) * | 2014-08-28 | 2016-03-02 | 葛洲坝集团水泥有限公司 | Air compressor set with energy-saving device |
| CN104452542A (en) * | 2014-10-21 | 2015-03-25 | 广东惠利普路桥信息工程有限公司 | Intelligent control system for synchronous chip seal vehicle |
| CN105804979A (en) * | 2016-03-15 | 2016-07-27 | 哈尔滨宏万智科技开发有限公司 | Control device for air compressor |
| CN106054716A (en) * | 2016-06-27 | 2016-10-26 | 华清智芯科技（北京）有限公司 | Four-way switching value output device based on CIB-BUS bus control mode |
| CN106762530A (en) * | 2016-12-24 | 2017-05-31 | 卢高 | A kind of Based Intelligent Control reciprocating compressor |
| CN113586417A (en) * | 2021-09-01 | 2021-11-02 | 淮阴工学院 | Air compressor grading control system and method |
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Effective date of abandoning: 20090204 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |