CN102220966A - Liquid pump control system - Google Patents
Liquid pump control system Download PDFInfo
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- CN102220966A CN102220966A CN2011101913738A CN201110191373A CN102220966A CN 102220966 A CN102220966 A CN 102220966A CN 2011101913738 A CN2011101913738 A CN 2011101913738A CN 201110191373 A CN201110191373 A CN 201110191373A CN 102220966 A CN102220966 A CN 102220966A
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Abstract
The invention relates to a liquid pump control system which comprises a plurality of pressure acquisition modules, a plurality of liquid leakage detection modules, a plurality of A/D (Analog/Digital) conversion modules, a main controller, a plurality of liquid pump motor control modules and a communication module, wherein the pressure acquisition modules and the liquid leakage detection modules are respectively used for acquiring the pressure and liquid leakage signals of the corresponding liquid pump, the outputs of the pressure acquisition modules are connected with the input end of the corresponding A/D conversion module, and the output of each A/D conversion module is connected with the corresponding input end of the main controller; each output end of the main controller is respectively connected with the signal input end of each corresponding liquid pump motor control module, the output of each liquid pump motor control module is used for controlling the working of a motor of the corresponding liquid pump, and the main controller communicates with an upper machine through the communication module. The liquid pump control system can be simultaneously applied to multiple pump systems, is flexible to control and high in response speed and convenient to operate by customers and select suitable control systems, circuit sharing is realized in production, and the production cost is reduced.
Description
Technical field
The present invention relates to liquid phase analysis and liquid phase production field, make that especially the liquid phase pump tool is to have superpressure to report to the police suddenly to stop, judgement of leakage detection failure and two or more communication mode are based on the function control system of one, specifically a kind of liquid phase pump control system.
Background technique
At present, in liquid phase analysis and liquid phase production, require the control of pump more and more accurate at present.But, existing liquid phase manufacturer, in liquid phase systems, all adopt RS232 to carry out and the upper-position unit communication mode, realize the communication of a pair of multiple spot, seldom having superpressure to report to the police in addition suddenly stops, the judgement of leakage detection failure and two or more communication modes or the like are based on the function of one, and the client can select to be fit to own actual required configuration seldom according to the present situation of oneself.
Summary of the invention
The objective of the invention is single at existing liquid phase systems communication mode, do not have the superpressure anxious problem judged with the leakage detection failure of stopping of reporting to the police, a kind of liquid phase pump control system is proposed.
Technological scheme of the present invention is:
A kind of liquid phase pump control system, it comprises a plurality of pressure acquisition modules, a plurality of leakage testing modules, a plurality of A/D modular converters, master controller, a plurality of liquid phase pump motor control modules and communication module, described each pressure acquisition module and leakage testing module are respectively as the pressure of liquid phase pump control system, the leakage signal input part is gathered the pressure of corresponding liquid phase pump, the leakage signal, the signal output part of each pressure acquisition module and leakage testing module all links to each other with the respective signal input end of corresponding A/D modular converter, the signal output part of each A/D modular converter links to each other with the respective signal input end of master controller, each signal output part of master controller links to each other with the signal input part of corresponding a plurality of liquid phase pump motor control modules respectively, the machine operation of corresponding liquid phase pump is controlled in the output of each liquid phase pump motor control module, and the signal of communication end of master controller communicates by communication module and upper-position unit.
Pressure acquisition module of the present invention is a pressure transducer.
Leakage testing module of the present invention is a moisture sensor.
Be connected in series differential amplifier circuit between pressure acquisition module of the present invention and the A/D modular converter.
Communication module of the present invention comprises photoelectric isolation module, RS232 Interface Module and RS422 Interface Module.
Beneficial effect of the present invention:
Liquid phase pump control system of the present invention can realize all-round computer control; Possess two kinds of patterns of constant current constant voltage, have flow system flow error compensation function; Solvent compressibility coefficient compensate function; Stepper motor segmentation cloth step control technique, flow accuracy and stability are high, and pressure pulsation is little; Possesses the plunger automatic cleaning function; Unsteady plunger, the design of series connection pump head.
Liquid phase pump control system of the present invention can realize that pressure detects demonstration in real time, has high low pressure overload alarm function.
The present invention can be applied in many moneys pump housing system simultaneously, and control is sensitive, and speed of response is fast, make things convenient for the client to operate and choose to be fit to own control system, and the realization circuit is shared on producing, and has reduced cost of production.
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Fig. 2 is a circuit diagram of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As Fig. 1, shown in 2, a kind of liquid phase pump control system, it is characterized in that it comprises a plurality of pressure acquisition modules, a plurality of leakage testing modules, a plurality of A/D modular converters, master controller (adopts one chip microcomputer, model can be CPU:C8051F120), a plurality of liquid phase pump motor control modules (model can be 57BYG350DL) and communication module, described each pressure acquisition module and leakage testing module are respectively as the pressure of liquid phase pump control system, the leakage signal input part is gathered the pressure of corresponding liquid phase pump, the leakage signal, the signal output part of each pressure acquisition module and leakage testing module all links to each other with the respective signal input end of corresponding A/D modular converter, the signal output part of each A/D modular converter links to each other with the respective signal input end of master controller, each signal output part of master controller links to each other with the signal input part of corresponding a plurality of liquid phase pump motor control modules respectively, the machine operation of corresponding liquid phase pump is controlled in the output of each liquid phase pump motor control module, and the signal of communication end of master controller communicates by communication module and upper-position unit.
Pressure acquisition module of the present invention is pressure transducer (model can be SM24HY01); The leakage testing module is glass packaged thermosensitive resistor (model can be ATH10KL2).
The present invention has the superpressure warning and suddenly stops and the automatic measuring ability of leakage, and adopts pressure sensor is gathered the fluid pressure in the pipeline in real time, feeds back to master controller, and the pressure good with prior demarcation compares, and realizes that the superpressure warning also stops the machine operation task; Leakage detects uses glass packaged thermosensitive resistor to be installed in the leakage collecting pit of mechanism, and this collecting pit structural design is the plate place in front, is convenient to the client and clears up leakage, judges whether the leakage problem accurately.
Be connected in series differential amplifier circuit between pressure acquisition module of the present invention and the A/D modular converter.
Communication module of the present invention comprises photoelectric isolation module, RS232 Interface Module and RS422 Interface Module.Communication aspects adopts two or more communication modes among the present invention, and first: RS232 communication, this is to connect one of the most frequently used port of PC, uses when mainly considering unit communication; Second: be generally serial ports at PC communication middle port at present, network interface and USB mouth, in liquid chromatography technology, the most frequently used is above-mentioned first kind of communication mode, for considering the machine in all systems is used a total line traffic control simultaneously so, so adopt 422 buses, 422 bus transfer distance, antijamming capability is strong, characteristics such as easy-to-connect.This bus is never to use in the liquid phase control technique, because its transmitted data amount is few, certain and software programming communication protocol has very big relation, we have passed through Optimization Software, solved the few problem of 422 bus transfer data amounts, be applied in me and taken charge of in the liquid chromatographic system,, problems such as obliterated data and communication failure do not occurred through test of many times.Adopt this bus to be convenient to telecontrol, this is main to prepare occasion with being applied in medicine etc., has reduced the personnel operation unsafe factor.The 3rd: the design is furnished with intelligent touch control system, design at 422 bus systems specially, can replace the upper-position unit function, do not having under the situation of PC, the client only need select our cheap intelligent touch control system, just can replace PC, and realize all control and data processing function, simple and the simplified control in interface, the other client uses notebook computer to control, and notebook computer does not often have serial ports, is head it off, we have added 422 buses and have transformed the network interface function in intelligent touch control system, realize notebook computer network interface Communication Control function.
During concrete enforcement:
Master controller comprises two-part: power-supply system and miniature processing system; Power-supply system is mainly finished system's power supply and the power supply of control step motor, and main output has the 24V-1A electric current for Wriggling Pump Head and the power supply of quarternary low pressure gradient linear electric motor, circuit Wen Bo＜1Mv; + 5V-2A, main power supply system has the one chip microcomputer system, communication module, motor control module, the LED indicating lamp module of communicating by letter, circuit Wen Bo＜1Mv; + 8V-0.3A and-8V-0.3A provides analog circut power supply, main power supply system has pressure transducer to gather modular pressure, leakage testing module, system AD modular converter;
Miniature control system: this minimum system designs based on enhancement mode single-chip microcomputer C8051F120 and finishes; Mainly finish the motor pulses complex functionality, decide frequency range 0.1HZ, realize that pulse is adjustable to 10KHZ; The pressure acquisition function uses sheet interior 12 to be ADC, can realize real-time pressure collection and observed pressure present situation, gathers 30 point data each second; The quarternary low pressure gradient function can realize micro-sampling control percentage function, mainly switches No. four linear electric motor in real time by single-chip microcomputer, and making the structured liquids pipeline be on off state can realize.Pumping system leakage measuring ability: adopt moisture sensor, only use the state of opening the light herein, single-chip microcomputer is judged the high-low level that leakage and no leakage feed back; Communication function: realize and upper-position unit real-time Communication for Power and controlled, be not subjected to the PC influence circuit for reaching, design herein adopts photoelectricity to isolate, and what disconnect P-6000 system and upper-position unit is electrically connected better reliability.The liquid crystal screen and the 4*4 position keystroke interface of 192*64 size have also been reserved in addition, so that the follow-up system upgrading.
The communication module circuit: this module is mainly finished with upper-position unit and is communicated by letter, and connects with other board and controlled by Shang Weiji, and this modular power source part is independent fully, adopts the system's power supply for this reason of IB0505S power module.Communicate by letter with upper-position unit and to realize that by optocoupler 6N137 electrical equipment isolates, making system be subjected to outer Jie influences electric field influence and reduces greatly; The function controlled of connecting with outside board adopts 422 bus communications, can realize remote controlled, can make operator needn't go to the scene, and operating security is higher.
Superpressure is reported to the police and suddenly stopped and the automatic testing circuit of leakage: pressure acquisition uses four-wire system pressure acquisition sensor, send AD to carry out the modulus collection after amplifying by difference, realizes the pipeline fluid pressure by algorithm again; Whether leakage detect to use moisture sensor to survey has liquid to be present in the leakage collecting tank, and with the signal feed back of gathering in system, realize the automatic measuring ability of leakage.
The LED deixis of communicating by letter: this indicates with red, green and bi-colour light (red, green), and the normal bright expression board power-supply system of green light is normal; Whether red expression system mistake please the timely detection of user have leakage, pressure limit or the like violation operation; Bi-colour light dodges green expression communication normally, dodges red light debug communications fault, please customer inspection whether be connected with telecommunication cable to upper-position unit.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (5)
1. liquid phase pump control system, it is characterized in that it comprises a plurality of pressure acquisition modules, a plurality of leakage testing modules, a plurality of A/D modular converters, master controller, a plurality of liquid phase pump motor control modules and communication module, described each pressure acquisition module and leakage testing module are respectively as the pressure of liquid phase pump control system, the leakage signal input part is gathered the pressure of corresponding liquid phase pump, the leakage signal, the signal output part of each pressure acquisition module and leakage testing module all links to each other with the respective signal input end of corresponding A/D modular converter, the signal output part of each A/D modular converter links to each other with the respective signal input end of master controller, each signal output part of master controller links to each other with the signal input part of corresponding a plurality of liquid phase pump motor control modules respectively, the machine operation of corresponding liquid phase pump is controlled in the output of each liquid phase pump motor control module, and the signal of communication end of master controller communicates by communication module and upper-position unit.
2. liquid phase pump control system according to claim 1 is characterized in that described pressure acquisition module is a pressure transducer.
3. liquid phase pump control system according to claim 1 is characterized in that described leakage testing module is a moisture sensor.
4. liquid phase pump control system according to claim 1 is characterized in that being connected in series differential amplifier circuit between described pressure acquisition module and the A/D modular converter.
5. liquid phase pump control system according to claim 1 is characterized in that described communication module comprises photoelectric isolation module, RS232 Interface Module and RS422 Interface Module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101913738A CN102220966A (en) | 2011-07-09 | 2011-07-09 | Liquid pump control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101913738A CN102220966A (en) | 2011-07-09 | 2011-07-09 | Liquid pump control system |
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| CN102220966A true CN102220966A (en) | 2011-10-19 |
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| CN2011101913738A Pending CN102220966A (en) | 2011-07-09 | 2011-07-09 | Liquid pump control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575401A (en) * | 2017-09-08 | 2018-01-12 | 江苏汇创流体工程装备科技有限公司 | A kind of immersible pump intelligent integration control system and control method based on serial communication |
| CN107807682A (en) * | 2017-11-20 | 2018-03-16 | 北京卫星制造厂 | A kind of super-pressure high accuracy control system of liquid-phase pump and control method |
| WO2018117220A1 (en) * | 2016-12-22 | 2018-06-28 | 日本電産株式会社 | Motor driving system |
| CN112379612A (en) * | 2020-09-27 | 2021-02-19 | 北京卫星制造厂有限公司 | Multi-axis coupling cooperative motion integrated control system and method for liquid phase pump system |
| CN112682297A (en) * | 2020-12-17 | 2021-04-20 | 保定思诺流体科技有限公司 | Integrated explosion-proof stepping peristaltic pump |
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| US20040247446A1 (en) * | 2001-10-03 | 2004-12-09 | Berryman Walter Henry | Pump control system |
| JP2006144606A (en) * | 2004-11-18 | 2006-06-08 | Nachi Fujikoshi Corp | Hydraulic device |
| CN201057139Y (en) * | 2007-06-22 | 2008-05-07 | 谭书涛 | Pressure controller of fluid pump |
| CN201273266Y (en) * | 2008-01-10 | 2009-07-15 | 中国石化集团江汉石油管理局第四机械厂 | Automatic security protection apparatus of fracturing pump |
| CN201412363Y (en) * | 2008-09-28 | 2010-02-24 | 江苏国泉泵业制造有限公司 | Submerged pump capable of removing liquid leaking out on-line |
| CN201527588U (en) * | 2009-11-05 | 2010-07-14 | 北大方正集团有限公司 | System for feeding liquid |
| CN202152722U (en) * | 2011-07-09 | 2012-02-29 | 江苏迪沃特仪器设备科技有限公司 | Control system of liquid-phase pump |
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2011
- 2011-07-09 CN CN2011101913738A patent/CN102220966A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040247446A1 (en) * | 2001-10-03 | 2004-12-09 | Berryman Walter Henry | Pump control system |
| JP2006144606A (en) * | 2004-11-18 | 2006-06-08 | Nachi Fujikoshi Corp | Hydraulic device |
| CN201057139Y (en) * | 2007-06-22 | 2008-05-07 | 谭书涛 | Pressure controller of fluid pump |
| CN201273266Y (en) * | 2008-01-10 | 2009-07-15 | 中国石化集团江汉石油管理局第四机械厂 | Automatic security protection apparatus of fracturing pump |
| CN201412363Y (en) * | 2008-09-28 | 2010-02-24 | 江苏国泉泵业制造有限公司 | Submerged pump capable of removing liquid leaking out on-line |
| CN201527588U (en) * | 2009-11-05 | 2010-07-14 | 北大方正集团有限公司 | System for feeding liquid |
| CN202152722U (en) * | 2011-07-09 | 2012-02-29 | 江苏迪沃特仪器设备科技有限公司 | Control system of liquid-phase pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018117220A1 (en) * | 2016-12-22 | 2018-06-28 | 日本電産株式会社 | Motor driving system |
| CN107575401A (en) * | 2017-09-08 | 2018-01-12 | 江苏汇创流体工程装备科技有限公司 | A kind of immersible pump intelligent integration control system and control method based on serial communication |
| CN107807682A (en) * | 2017-11-20 | 2018-03-16 | 北京卫星制造厂 | A kind of super-pressure high accuracy control system of liquid-phase pump and control method |
| CN107807682B (en) * | 2017-11-20 | 2020-07-14 | 北京卫星制造厂 | Liquid phase pump control system and control method |
| CN112379612A (en) * | 2020-09-27 | 2021-02-19 | 北京卫星制造厂有限公司 | Multi-axis coupling cooperative motion integrated control system and method for liquid phase pump system |
| CN112379612B (en) * | 2020-09-27 | 2022-06-03 | 北京卫星制造厂有限公司 | Multi-axis coupling cooperative motion integrated control system and method for liquid phase pump system |
| CN112682297A (en) * | 2020-12-17 | 2021-04-20 | 保定思诺流体科技有限公司 | Integrated explosion-proof stepping peristaltic pump |
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Application publication date: 20111019 |