CN2312390Y - Microcomputer control device for electrolytic solution proportional valve - Google Patents
Microcomputer control device for electrolytic solution proportional valve Download PDFInfo
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- CN2312390Y CN2312390Y CN 97240338 CN97240338U CN2312390Y CN 2312390 Y CN2312390 Y CN 2312390Y CN 97240338 CN97240338 CN 97240338 CN 97240338 U CN97240338 U CN 97240338U CN 2312390 Y CN2312390 Y CN 2312390Y
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Abstract
The utility model relates to a controller for electro-hydraulic proportional valves, which comprises a microcomputer processing system, a display circuit, a signal input circuit, a switching power amplifier and feedback signal processing circuit, and a module/digital conversion circuit. Due to the adoption of the microcomputer processing and the digital control, so that the utility model has the advantages of high reliability, stable performance, and convenient maintenance and adjustment, and the control function is enhanced. Simultaneously, the utility model adopts the microcomputer processing system to directly generate PWM (pulse width modulation) signals and a triode to drive the loads of the electromagnet of an electro-hydraulic proportional valve, so that the circuits of the controller has the advantages of simplicity, little heat generation, and small voltage temperature drift. In addition, the controller for electro-hydraulic proportional valves with the advantage of strong applicability can be used on three kinds of electro-hydraulic proportional valves (flow valves, pressure valves, and directional valves) for progress control.
Description
The utility model is a kind of electro-hydraulic proportional valve control device, belongs to the renovation technique of electro-hydraulic proportional valve controller used thereby.
Existing electro-hydraulic proportional valve control device adopts the structure of linear amplifier circuit mostly, because of linear amplifier circuit is an analog circut, so the performance of this kind controller is stable inadequately, and function is not strong, adjust and keep in repair difficulty, and can only be used for the electro-hydraulic proportional valve control of single variety.
The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of digital controller that adopts single-chip microcomputer is provided, and its control function increases stable performance greatly, the reliability height, adjustment and easy to maintenance, adaptability is strong, can be used for different types of electro-hydraulic proportional valve control.
Functional-block diagram of the present utility model as shown in drawings, include microprocessor system (1), display circuit (2), signal input circuit (3), close power amplifier and feedback signal processing circuit (4), mould/number conversion circuit (5), display circuit (2) is connected with the output terminal of microprocessor system (1), the input end of close power amplifier and feedback signal processing circuit (4) is connected with microprocessor system (1), output terminal is connected with the input end of electro-hydraulic proportional valve and mould/number conversion circuit (5) respectively, and the output terminal of mould/number conversion circuit (5) is connected with microprocessor system (1).
Describe concrete structure of the present utility model and working condition in detail below in conjunction with accompanying drawing:
Fig. 1 is a functional-block diagram of the present utility model;
Fig. 2 .a is the structural representation of microprocessor system in the utility model (1);
Fig. 2 .b is the structural representation of display circuit in the utility model (2);
Fig. 2 .c is the structural representation of signal input circuit in the utility model (3);
Fig. 2 .d is the broken structural representation that reaches feedback signal processing circuit (4) of switch merit in the utility model;
Fig. 2 .e is the structural representation of mould in the utility model/number conversion circuit (5);
Fig. 3 is the structural representation of control panel in the utility model
Functional-block diagram of the present utility model and electrical block diagram thereof are as shown in drawings, include microprocessor system (1), display circuit (2), signal input circuit (3), close power amplifier and feedback signal processing circuit (4), mould/number conversion circuit (5), wherein microprocessor system (1) includes single-chip microcomputer 8031, address decoder 74LS138, memory under program 2764, data memory 2864, latch 74LS373, P2.0～the P2.3 of single-chip microcomputer P2 mouth is connected with the A8～A12 of memory under program 2764 with data memory 2864 respectively, and the P0.0～P0.7 of single-chip microcomputer 8031 is connected with the A0～A7 of memory under program by latch, P2.5～the P2.7 of single-chip microcomputer 8031P2 mouth is connected with the chip selection signal CE of data memory 2864 by decoder, shown in Fig. 2 .a.Display circuit (2) includes 5 strings and becomes and register 74LS164.4 position nixie tube and 4 LEDs 1～4,4 register 74LS164 are connected on the P1.0 and the P1.3 interface of single-chip microcomputer 8031 in the microprocessor system (1), 4 nixie tubes and 4 light emitting diodes are connected with the output terminal of register 74LS164 respectively, shown in Fig. 2 .b.Signal input circuit (3) includes button K1～K4, selector switch DIP1, DIP2, external control switching signal input 1～8, button K1～K4 and selector switch DIP1, DIP2 are connected with P1.1, P1.4, P1.2, P1.5, P3.4, the P3.5 interface of single-chip microcomputer 8031 in the microprocessor system (1) respectively, external control switching signal 1～8 is connected with the data/address bus D0～D7 of single-chip microcomputer 8031 by register 74LS245, and the address wire Y0 by single-chip microcomputer 8031 carries out gating, shown in Fig. 2 .c.Close power amplifier and feedback signal processing circuit (4) include phase inverter 74LS04, triode T1, T2, operational amplifier IC1, IC2 and resistance R 1～R14 thereof, peripheral cells such as capacitor C 1～C3, the input end of phase inverter 74LS04 is connected with the P1.6 interface of single-chip microcomputer 8031 in the microprocessor system (1), output terminal is connected with the base stage of triode T1 by resistance R 1, the grounded-emitter connection of triode T1, collector electrode is connected with the base stage of triode T2 by resistance R 4, resistance R 2 is connected between the base stage and emitter of triode T1, the emitter of triode T2 is connected with power supply, and collector electrode is connected with the electromagnet PEM of electro-hydraulic proportional valve; The in-phase input end of operational amplifier IC1 is connected with electromagnet PEM by resistance R 7, R6, and inverting input is connected with its output terminal by resistance R 10; The inverting input of operational amplifier IC2 is connected with the output terminal of IC1 by resistance R 11, and the in-phase input end of IC2 is by resistance R 12 ground connection, and the output terminal of IC2 is connected with the input end X1 of mould/number conversion circuit (5); Above-mentioned close power amplifier and feedback signal processing circuit (4) are provided with two groups, the input end of phase inverter 74LS04 in another group is connected with the P1.7 interface of single-chip microcomputer 8031, the output terminal of this group circuit is connected with the input end X4 of mould/number conversion circuit (5), during the control electrohydraulic proportional directional valve, with above-mentioned two groups, control electric-hydraulic proportion pressure valve and Flow valve are then only with wherein one group, shown in Fig. 2 d.Mould/number conversion circuit (5) includes A/D converter ICL7109, electronic switch CD4052, electronic switch is two four choosing-analogue signal switches, its input end is connected with the output terminal of close power amplifier and feedback signal processing circuit (4), the output terminal of electronic switch CD4052 is connected with the input end of A/D converter ICL7109, the selector channel A of electronic switch CD4052, B is connected with the P3.0 interface of single-chip microcomputer 8031, the output terminal of A/D converter ICL7109 is connected with the datawire D0～D7 of single-chip microcomputer 8031, the HBEN of ICL7109, LBEN, RUN, STATUS, CE end respectively with 8031 Y6, Y5, P3.1, P3.2, RD holds connection, shown in Fig. 2 .e.
Fig. 3 is the structural representation of the utility model control panel, the electric current in the corresponding panel of 4 nixie tubes upper left corner in the above-mentioned display circuit (2) shows (hop count), " work " on 4 LED 1～4 corresponding panel upper right corner, " manually ", " input ", " simulation " one of four states, " model selection " of the corresponding panel of the button K1 in the signal input circuit (3)～K4 below, " choosing of start and stop row ", " choosing ", " cross choosing ", selector switch input DIP1, DIP2 is used to select the kind of electro-hydraulic proportional valve, it is arranged in the panel, " choosing of start and stop row " is as the start and stop button of " work " of the present utility model and " simulation " state, during again as " input " parameter, select certain row input or change parameter; Above-mentioned " model selection " is used for selecting one of " work ", " manually ", " input ", " simulation " four kinds of states, " choosing " and " cross choosing " is when being respectively " manually ", directly reduce and increase output current and when " input ", select certain position (flashing) and certain word (increasing progressively) by bond number.
The utility model in use, turn on the power switch, by " model selection " selection " input " state, and by " choosing of start and stop row ", " choosing " and " cross choosing " carries out the parameter input, P1.1 because of button K1～K4 and single-chip microcomputer 8031, P1.4, P1.2, the P1.5 interface connects, therefore, the parameter of input is handled through microprocessor system (1), directly generate PWM (pulse duration modulation) signal by its software, the two-way pwm signal is through the P1.6 of single-chip microcomputer 8031, P1.7 interface and enter phase inverter 74LS04 in close power amplifier and the feedback signal processing circuit (4), again through triode T1, the T2 close power amplifier, provide driving current to Proportional valve electromagnet (PEM), by changing the dutycycle of pwm signal, can change the current value on the PEM, operational amplifier IC1 and peripheral cell thereof are formed the quick filter circuit, the Alternating Component of feedback voltage signal is filtered, and reduce delay time as far as possible, guarantee the linear relationship of input output, operational amplifier IC2 and peripheral cell thereof mainly are arranged to output signal desired magnitude of voltage and are entered mould/number conversion circuit (5), because the A/D converter ICL7109 in mould/number conversion circuit (5) can only import one road aanalogvoltage, therefore, because the two-way feedback signal of output is before entering the ICL7109 transducer in close power amplifier and the feedback signal processing circuit (4), need to switch through electronic switch CD4052, when the A=B=0 of its selector channel, select the X1 passage, when A=B=1, selector channel X4, low eight the D0～D7 eight bit data lines of directly directly going into single-chip microcomputer 8031 of the conversion output of ICL7109, and Gao Siwei inserts D0～D3, read data by control with timesharing, Y5, Y6 is an address gating signal, and P3.1, P3.2, RD then is control transformation and read data signal.Subsequently, microprocessor system (1) is handled the conversion output of ICL7109 again and is exported by display circuit (2), the serial signal that string in the display circuit (2) becomes and register 74LS164 exports single-chip microcomputer 8031 is converted to parallel signal, 74LS164 can latch output state, output terminal has stronger driving force, can be through direct driven for emitting lights diode of current-limiting resistance and nixie tube work, can see the output of controller intuitively from diode and nixie tube.
The utility model is compared with existing controller and is had the following advantages:
1, adopt single-chip microcomputer digital control, the control function strengthens greatly, the reliability height, and stable performance, Adjustment, easy to maintenance;
2, directly generate pwm signal by microprocessor system, and adopt T1, T2 triode to drive electric liquid The load of proportioning valve electromagnet, its circuit is simple, and heating is few, and temperature is floated little;
3, adaptability is strong, can control three kinds of electro-hydraulic proportional valves (Flow valve, pressure valve, directional control valve), and can adjust parameter according to the corresponding proportion valve, to satisfy the requirement of controlling object;
4, may command starting and the transient process that stops make mechanism reach the quick and smooth motion;
5, can carry out timing controlled to output quantity, and can the scene be provided with tens and preset givenly, switch, to reach control procedure changes output quantity according to time or outside switching signal purpose by external switch.
Claims (11)
1, a kind of electro-hydraulic proportional valve computer controller, it is characterized in that including microprocessor system (1), display circuit (2), signal input circuit (3), close power amplifier and feedback signal processing circuit (4), mould/number conversion circuit (5), display circuit (2) is connected with the output terminal of microprocessor system (1), signal input circuit (3) is connected with the input end of microprocessor system (1), the input end of close power amplifier and feedback signal processing circuit (4) is connected with microprocessor system (1), output terminal is connected with the input end of electro-hydraulic proportional valve and mould/number conversion circuit (4) respectively, and the output terminal of mould/number conversion circuit (5) is connected with microprocessor system (1).
2, controller according to claim 1, it is characterized in that above-mentioned microprocessor system (1) includes single-chip microcomputer, decoder, memory and latch, wherein memory includes memory under program and data memory, P2.0～the P2.3 of single-chip microcomputer P2 mouth is connected with the A8～A12 of memory under program and data memory respectively, and the P0.0～P0.7 of single-chip microcomputer is connected with the A0～A7 of memory under program by latch, and the P2.5～P2.7 of single-chip microcomputer P2 mouth is connected with the chip selection signal CE of data memory by decoder.
3, controller according to claim 2 is characterized in that above-mentioned single-chip microcomputer is 8031, and memory under program is 2764, and data memory is 2864, and latch is 74LS373, and decoder is 74LS138.
4, controller according to claim 1, it is characterized in that above-mentioned display circuit (2) includes several strings and becomes and register, some nixie tubes and several light emitting diodes, several string changes and register are attempted by the interface end of microprocessor system (1), and nixie tube and light emitting diode become with string respectively and the output terminal of register is connected.
5, controller according to claim 4 is characterized in that above-mentioned string becomes and register is 74LS164, is provided with 5, and nixie tube is 4 nixie tubes, and light emitting diode is provided with 4.
6, controller according to claim 1, it is characterized in that above-mentioned signal input circuit (3) includes button input, the input of rebellion switch and the input of external control switching signal, button input and selector switch input are connected with the interface of microprocessor system (1), and the input of external control switching signal is connected by the data/address bus of register with microprocessor system (1).
7, controller according to claim 6, it is characterized in that above-mentioned button input includes 4 button K1～K4, the selector switch input includes two switch DIP1, DIP2, and the input of external control switching signal includes 8 the tunnel, it is by the address wire gating, and register is 74LS245.
8, controller according to claim 1, it is characterized in that above-mentioned close power amplifier and feedback signal processing circuit (4) include phase inverter, triode T1, T2, operational amplifier IC1, IC2 and peripheral cell thereof, the input end of phase inverter is connected with microprocessor system (1), output terminal is connected with the base stage of triode T1 by resistance R 1, the grounded-emitter connection of triode T1, collector electrode is connected with the base stage of triode T2 by resistance R 4, the emitter of triode T2 is connected with power supply, and collector electrode is connected with the electromagnet PEM of electro-hydraulic proportional valve; The in-phase input end of operational amplifier IC1 is connected with electromagnet PEM by resistance R 7, R6, and inverting input is connected with its output terminal by resistance R 10; The inverting input of operational amplifier IC2 is connected with the output terminal of IC1 by resistance R 11, and the in-phase input end of IC2 is by resistance R 12 ground connection, and the output terminal of IC2 is connected with the input end of mould/number conversion circuit (5).
9, controller according to claim 8 is characterized in that above-mentioned close power amplifier and feedback signal processing circuit (4) are provided with two groups.
10, controller according to claim 1, it is characterized in that above-mentioned mould/number conversion circuit (5) includes A/D converter and electronic switch, the input end of electronic switch is connected with the output terminal of close power amplifier and feedback signal processing circuit (4), the output terminal of electronic switch is connected with the input end of A/D converter, the output terminal of A/D converter is connected with microprocessor system (1), and the selector channel of electronic switch is connected with microprocessor system (1).
11, controller according to claim 10 is characterized in that above-mentioned A/D converter is the ICL7109 chip, and electronic switch is two four choosing-analogue signal switch CD4052.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97240338 CN2312390Y (en) | 1997-07-18 | 1997-07-18 | Microcomputer control device for electrolytic solution proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97240338 CN2312390Y (en) | 1997-07-18 | 1997-07-18 | Microcomputer control device for electrolytic solution proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2312390Y true CN2312390Y (en) | 1999-03-31 |
Family
ID=33950117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97240338 Expired - Fee Related CN2312390Y (en) | 1997-07-18 | 1997-07-18 | Microcomputer control device for electrolytic solution proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2312390Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062247A (en) * | 2010-11-11 | 2011-05-18 | 苏州合欣美电子科技有限公司 | Proportional valve adjusting circuit for wall-mounted fireplace |
| CN102360177A (en) * | 2011-09-15 | 2012-02-22 | 江苏科技大学 | Electro-hydraulic linear speed servo system |
| CN101709804B (en) * | 2009-12-18 | 2012-07-04 | 浙江大学 | PWM driving circuit used for nozzle baffle plate of intelligent valve positioner |
| CN103307336A (en) * | 2013-06-27 | 2013-09-18 | 哈尔滨理工大学 | Digital amplifier for electro-hydraulic proportional valve |
| CN103395712A (en) * | 2013-08-19 | 2013-11-20 | 金华诺王液压控制科技有限公司 | Output-characteristic-adjustable hydraulic capstan electrohydraulic control system |
| CN102117052B (en) * | 2009-12-31 | 2014-06-11 | 北京谊安医疗系统股份有限公司 | Drive control device used for proportional valve |
| CN103914086A (en) * | 2012-12-29 | 2014-07-09 | 北京谊安医疗系统股份有限公司 | PWM-based apparatus and method for controlling gas flow in anesthesia machine |
| CN103953774A (en) * | 2013-09-18 | 2014-07-30 | 中国电子科技集团公司第十四研究所 | High-reliability intelligent proportional valve control device based on in-site bus |
| CN109990135A (en) * | 2019-04-18 | 2019-07-09 | 苏州市职业大学 | One kind continuously adjusting type valve control device and method |
-
1997
- 1997-07-18 CN CN 97240338 patent/CN2312390Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709804B (en) * | 2009-12-18 | 2012-07-04 | 浙江大学 | PWM driving circuit used for nozzle baffle plate of intelligent valve positioner |
| CN102117052B (en) * | 2009-12-31 | 2014-06-11 | 北京谊安医疗系统股份有限公司 | Drive control device used for proportional valve |
| CN102062247A (en) * | 2010-11-11 | 2011-05-18 | 苏州合欣美电子科技有限公司 | Proportional valve adjusting circuit for wall-mounted fireplace |
| CN102360177A (en) * | 2011-09-15 | 2012-02-22 | 江苏科技大学 | Electro-hydraulic linear speed servo system |
| CN102360177B (en) * | 2011-09-15 | 2013-05-15 | 江苏科技大学 | Electro-hydraulic linear speed servo system |
| CN103914086A (en) * | 2012-12-29 | 2014-07-09 | 北京谊安医疗系统股份有限公司 | PWM-based apparatus and method for controlling gas flow in anesthesia machine |
| CN103914086B (en) * | 2012-12-29 | 2016-12-28 | 北京谊安医疗系统股份有限公司 | A kind of anesthetic machine gas flow control device based on PWM and method thereof |
| CN103307336A (en) * | 2013-06-27 | 2013-09-18 | 哈尔滨理工大学 | Digital amplifier for electro-hydraulic proportional valve |
| CN103395712A (en) * | 2013-08-19 | 2013-11-20 | 金华诺王液压控制科技有限公司 | Output-characteristic-adjustable hydraulic capstan electrohydraulic control system |
| CN103395712B (en) * | 2013-08-19 | 2016-02-24 | 金华诺王液压控制科技有限公司 | The hydraulic windlass electrohydraulic control system that a kind of output characteristic is adjustable |
| CN103953774A (en) * | 2013-09-18 | 2014-07-30 | 中国电子科技集团公司第十四研究所 | High-reliability intelligent proportional valve control device based on in-site bus |
| CN109990135A (en) * | 2019-04-18 | 2019-07-09 | 苏州市职业大学 | One kind continuously adjusting type valve control device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |