CN2924071Y - Pressure smart control device of air compressor - Google Patents
Pressure smart control device of air compressor Download PDFInfo
- Publication number
- CN2924071Y CN2924071Y CN 200620074979 CN200620074979U CN2924071Y CN 2924071 Y CN2924071 Y CN 2924071Y CN 200620074979 CN200620074979 CN 200620074979 CN 200620074979 U CN200620074979 U CN 200620074979U CN 2924071 Y CN2924071 Y CN 2924071Y
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- circuit
- resistance
- pressure
- microprocessor
- operational amplifier
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Abstract
A pressure smart control device of an air compressor includes a power supply circuit, a signal input circuit, a microprocessor, a drive display circuit and a keyboard circuit; wherein the signal input circuit includes a pressure sensor PS1 and PS2 arranged at an outlet of the gas pipe and in the gas cylinder and an amplification output circuit which is connected with the output terminal of the sensor PS1 and PS2 and consists of an integrated operational amplifier IC1 and IC2 and a peripheral circuit; the drive display circuit is two groups of series dynamic LED scanning circuits which are separately connected with the drive end of the microprocessor whose input/output terminals are connected with the keyboard circuit which consists of a work switch K1, a pressure switch K2 and resistances R64, R63, and R62; the control terminal of the microprocessor is connected with the power supply of the air pump motor by the control circuit consisting of SCR trigger tube VT and the resistance R6. The utility model reduces the temperature drift of the pressure signal, automatically controls the pressure in the air tank and is characterized in liable work and low manufacture cost.
Description
Technical field
The utility model relates to a kind of pressure control device of air compressor, especially relates to a kind of pressure intelligent control gear of air compressor.
Background technique
The pressure control device of conventional air compressor is by the pressure gauge that communicates with gas tank gas pressure in the jar to be detected, and by the switch of manual operation air pump motor, the gas tank internal pressure is controlled again.Along with development of electronic technology, air compressor can pass through the intellectuality control that microprocessor, signal input circuit, display circuit and control circuit are realized pressure at present.But present known intelligence controlling device is that parameters such as gas tank internal pressure, temperature and working time are carried out detection of dynamic and demonstration.For solving defectives such as pressure signal, interference free performance difference, also set up the analogue signal control circuit, by microprocessor sampled signal is further processed again, reach necessary requirement.But the pressure control device of this structure is because of control circuit and display circuit are comparatively complicated, components and parts are many, and not only cost is higher, and can not be simultaneously jar internal pressure and delivery pressure is detected and show.
Summary of the invention
The purpose of this utility model provides a kind of temperature drift that can reduce pressure signal, can detect gas tank internal pressure and delivery pressure simultaneously, controls the gas tank internal pressure automatically, and stable work in work, makes and makes this low air compressor pressure intelligent control gear.
The utility model is that the technological scheme that achieves the above object is: a kind of pressure intelligent control gear of air compressor, comprise power circuit, signal input circuit, microprocessor, drive display circuit and keyboard circuit, it is characterized in that: described signal input circuit comprises the pressure transducer PS1 that is arranged on the tracheae outlet port and is arranged on the interior pressure transducer PS2 of gas tank, be connected to pressure transducer PS1, two amplification output circuits that the PS2 output terminal is made of integrated operational amplifier IC1 IC2 and peripheral circuit, the output terminal of two amplification output circuits are connected on the signal I/O end of microprocessor respectively; Described driving display circuit is two groups of serial dynamic LED sweep circuits that are connected respectively on the microprocessor driven end; And the I/O end of microprocessor also is connected to operating switch K1, pressure the keyboard circuit that K switch 2 and resistance R 64, R63, R62 constitute is set, between resistance R 64, R63, R62 serial connection power supply and the ground, operating switch K1 is attempted by the two ends of resistance R 63, pressure is provided with the two ends that K switch 2 is attempted by resistance R 63 and R62, and the control end of microprocessor is connected on the air pump motor power supply by the control circuit that controllable silicon trigger tube VT and resistance R 6 constitute.
The utility model has the following advantages after adopting technique scheme: 1, can reduce the temperature drift of pressure signal ketone.Signal output amplifier of the present utility model by pressure transducer and integrated operational amplifier with and peripheral circuit constitute because the pressure transducer peripheral circuit is few, can reduce the relative temperature drift that is produced because of the first device of electronics, improved the precision of Pressure testing.2, control is convenient, accurate.The utility model is owing to can detect gas tank internal pressure and delivery pressure simultaneously, and by microprocessor to current pressure with pressure is set compares, automatically control the gas tank internal pressure, and in time gas tank internal pressure and delivery pressure are shown by display device, pressure control is accurate, precision is high.3, reliable operation, low cost of manufacture.The utility model adopts silicon controlled toggle to control the working power of air pump motor, and electrical apparatus element are few, and reliable operation can reduce manufacture cost.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is an electric theory structure schematic representation of the present utility model.
Wherein: 1-air pump motor power supply, the 2-control circuit, the 3-power circuit, 4-drives display circuit, 5-keyboard circuit, 6-microprocessor; 7-signal input amplifying circuit, 7-1-amplification circuit, 7-2-amplification circuit.
Embodiment
See the pressure intelligent control gear of air compressor of the present utility model shown in Figure 1, comprise power circuit 3, signal input circuit 7, microprocessor 6, drive display circuit 4 and key circuit 5.Signal input circuit 7 of the present utility model comprises the pressure transducer PS1 that is arranged on the tracheae outlet port and is arranged on pressure transducer PS2 in the gas tank, is connected to amplification output circuit 7-1, the 7-2 of pressure transducer PS1, PS2 output terminal, amplification output circuit 7-1,7-2 are made of integrated operational amplifier IC1, IC2 and peripheral circuit, and the output terminal of amplification output circuit 7-1,7-2 is connected on the signal I/O end of microprocessor 6 respectively.See shown in Figure 1, driving display circuit 4 of the present utility model is two groups of serial dynamic LED sweep circuits that are connected respectively on microprocessor 6 drive ends, this serial dynamic LED sweep circuit is by two LED nixie tubes and triode T1, T2, T3, T4, T5, formation such as T6 and resistance, the serial communication output termination LED nixie tube of microprocessor 3, the driving LED nixie tube, the address signal output terminal of microprocessor 3 meets triode T1 respectively, T2, T3, T4, the base stage of T5 and T6, the T1 of triode, T2, T3, T4, the collector electrode of T5 and T6 connects the LED nixie tube, the corresponding LED nixie tube of dynamic driving dynamically shows the pressure in tracheae outlet port and the pressure in the gas tank.The I/O end of seeing the utility model microprocessor 6 shown in Figure 1 also is connected to operating switch K1, pressure is provided with K switch 2 and resistance R 64, R63, the keyboard circuit 5 that R62 constitutes, resistance R 64, R63, between R62 serial connection power supply and the ground, operating switch K1 is attempted by the two ends of resistance R 63, pressure is provided with the two ends that K switch 2 is attempted by resistance R 63 and R62, and keyboard circuit 5 also comprises, downforce by-pass cock K3, K4 and resistance R 61 and R60, upward pressure by-pass cock K3 is attempted by resistance R 63, the two ends of R62 and R61, downforce by-pass cock K4 is attempted by resistance R 63, R62, the two ends of R61 and R60, keyboard operation is convenient, accurately.Control circuit 2 of the present utility model is made of controllable silicon trigger tube VT and resistance R 6, the control end of microprocessor 6 is connected on air pump motor power supply 1 by control circuit 2, microprogramming device of the present utility model adopts LPC924, LPC925, Mega168, PIC16F72, PIC16F873 etc., integrated operational amplifier adopts LM358, SGM358 etc., make the pressure intelligent control gear adopt data storage technology, being set, pressure has microprocessor,, air pump motor power supply 1 is carried out intellectuality control to current pressure with pressure is set compares by software.
See shown in Figure 1, power circuit 3 of the present utility model comprises capacitor C 1, voltage-stabiliser tube ZD and resistance R 1, R1a, R2 and capacitor C 3, C3a, resistance R 2, capacitor C 3, after the C3a parallel connection with resistance R 1, R1a parallel branch serial connection constitutes the resistance-capacitance depressurization branch road, capacitor C 1 and voltage-stabiliser tube ZD are connected to the two ends of resistance-capacitance depressurization branch road, and the output terminal of power circuit 3 also is connected to the analog power circuit, the analog power circuit comprises three terminal regulator P1 and by inductance L 1, capacitor C 10, the LC eliminator that C11 constitutes, the output terminal of power circuit is connected between the input end and common port of three terminal regulator P1, the LC eliminator is connected on output terminal and the common port of three terminal regulator P1, the output terminal of analog power circuit connects microprocessor respectively, keyboard circuit 5 and integrated operational amplifier IC1, the power end of IC2 is to improve microprocessor, keyboard circuit 5 and integrated operational amplifier IC1, the sampling precision of IC2.See shown in Figure 1ly, the output terminal of analog power circuit also can be connected on the power end of microprocessor 6 by the LC eliminator that capacitor C 2 and inductance L 2 constitutes, and more stable analog power is provided for microprocessor 6.
See shown in Figure 1, pressure transducer PS1 just, negative output terminal connects homophase and the end of oppisite phase of integrated operational amplifier IC1 respectively and goes into end, between the inverting input of integrated operational amplifier IC1 and the positive output end and connecting resistance R37 and capacitor C 27, be connected in series power end and the grounding end that the zeroing circuit one that constitutes terminates at pressure transducer PS1 by resistance R 34 and R35, the other end of zeroing circuit is connected on the normal phase input end of integrated operational amplifier IC1 by resistance R 36, and the resistance of resistance R 36 is identical with the resistance of R37, also is connected to capacitor C 29 between the inverting input of integrated operational amplifier IC1 and the positive output end.
See shown in Figure 1, pressure transducer PS2 just, negative output terminal is connected on homophase and the end of oppisite phase of integrated operational amplifier IC2 respectively and goes into end, between the inverting input of integrated operational amplifier IC2 and the positive output end and connecting resistance R33 and capacitor C 22, by resistance R 30, the zeroing circuit one that the R31 serial connection constitutes terminates at power end and the grounding end of pressure transducer PS2, the other end of zeroing circuit is connected on the normal phase input end of integrated operational amplifier IC2 by resistance R 32, and the resistance of resistance R 32 is identical with the resistance of R33, also is connected to capacitor C 28 between the inverting input of integrated operational amplifier IC2 and positive output end.
Claims (9)
1, a kind of pressure intelligent control gear of air compressor, comprise power circuit (3), signal input circuit (7), microprocessor (6), drive display circuit (4) and keyboard circuit (5), it is characterized in that: described signal input circuit (7) comprises the pressure transducer PS1 that is arranged on the tracheae outlet port and is arranged on the interior pressure transducer PS2 of gas tank, be connected to pressure transducer PS1, the amplification output circuit (7-1) that the PS2 output terminal is made of integrated operational amplifier IC1 IC2 and peripheral circuit, (7-2), amplification output circuit (7-1), output terminal (7-2) is connected on the signal I/O end of microprocessor (6) respectively; Described driving display circuit (4) is two groups of serial dynamic LED sweep circuits that are connected respectively on microprocessor (6) drive end; The I/O end of microprocessor (6) also is connected to and comprises that operating switch K1, pressure are provided with the keyboard circuit (5) that K switch 2 and resistance R 64, R63, R62 constitute, between resistance R 64, R63, R62 serial connection power supply and the ground, operating switch K1 is attempted by the two ends of resistance R 63, and pressure is provided with the two ends that K switch 2 is attempted by resistance R 63 and R62; The control end of microprocessor (6) is connected on air pump motor power supply (1) by the control circuit (2) that controllable silicon trigger tube VT and resistance R 6 constitute.
2, the pressure intelligent control gear of air compressor according to claim 1, it is characterized in that: described power circuit comprises capacitor C 1, voltage-stabiliser tube ZD and resistance R 1, R1a, R2 and capacitor C 3, C3a, be connected in series formation resistance-capacitance depressurization branch road with resistance R 1, R1a parallel branch after resistance R 2, capacitor C 3, the C3a parallel connection, capacitor C 1 and voltage-stabiliser tube ZD are connected to the two ends of resistance-capacitance depressurization branch road.
3, the pressure intelligent control gear of air compressor according to claim 2, it is characterized in that: the output terminal of described power circuit (3) also is connected to the analog power circuit, the analog power circuit comprises three terminal regulator P1 and by inductance L 1, capacitor C 10, the LC eliminator that C11 constitutes, the output terminal of power circuit is connected between the input end and common port of three terminal regulator P1, the LC eliminator is connected on output terminal and the common port of three terminal regulator P1, and the output terminal of analog power circuit connects microprocessor respectively, keyboard circuit (5) and integrated operational amplifier IC1, the power end of IC2.
4, the pressure intelligent control gear of air compressor according to claim 3 is characterized in that: the LC eliminator that the output terminal of described analog power circuit constitutes by capacitor C 2 and inductance L 2 is connected on the power end of microprocessor (6).
5, the pressure intelligent control gear of air compressor according to claim 1, it is characterized in that: described keyboard circuit (5) also comprises upper and lower pressure regulating switch K3, K4 and resistance R 61 and R60, upward pressure by-pass cock K3 is attempted by the two ends of resistance R 63, R62 and R61, and downforce by-pass cock K4 is attempted by the two ends of resistance R 63, R62, R61 and R60.
6, the pressure intelligent control gear of air compressor according to claim 1, it is characterized in that: described pressure transducer PS1 just, negative output terminal connects homophase and the end of oppisite phase of integrated operational amplifier IC1 respectively and goes into end, between the inverting input of integrated operational amplifier IC1 and the positive output end and connecting resistance R37 and capacitor C 27, be connected in series power end and the grounding end that the zeroing circuit one that constitutes terminates at pressure transducer PS1 by resistance R 34 and R35, the other end of zeroing circuit is connected on the normal phase input end of integrated operational amplifier IC1 by resistance R 36, and the resistance of resistance R 36 is identical with the resistance of R37.
7, the pressure intelligent control gear of air compressor according to claim 4 is characterized in that: also be connected to capacitor C 29 between the inverting input of described integrated operational amplifier IC1 and the positive output end.
8, the pressure intelligent control gear of air compressor according to claim 1, it is characterized in that: described pressure transducer PS2 just, negative output terminal is connected on homophase and the end of oppisite phase of integrated operational amplifier IC2 respectively and goes into end, between the inverting input of integrated operational amplifier IC2 and the positive output end and connecting resistance R33 and capacitor C 22, by resistance R 30, the zeroing circuit one that the R31 serial connection constitutes terminates at power end and the grounding end of pressure transducer PS2, the other end of zeroing circuit is connected on the normal phase input end of integrated operational amplifier IC2 by resistance R 32, and the resistance of resistance R 32 is identical with the resistance of R33.
9, the pressure intelligent control gear of air compressor according to claim 6 is characterized in that: also be connected to capacitor C 28 between the inverting input of described integrated operational amplifier IC2 and the positive output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074979 CN2924071Y (en) | 2006-07-20 | 2006-07-20 | Pressure smart control device of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074979 CN2924071Y (en) | 2006-07-20 | 2006-07-20 | Pressure smart control device of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924071Y true CN2924071Y (en) | 2007-07-18 |
Family
ID=38260502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620074979 Expired - Fee Related CN2924071Y (en) | 2006-07-20 | 2006-07-20 | Pressure smart control device of air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924071Y (en) |
-
2006
- 2006-07-20 CN CN 200620074979 patent/CN2924071Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20100720 |