CN202152722U - Control system of liquid-phase pump - Google Patents
Control system of liquid-phase pump Download PDFInfo
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- CN202152722U CN202152722U CN2011202405095U CN201120240509U CN202152722U CN 202152722 U CN202152722 U CN 202152722U CN 2011202405095 U CN2011202405095 U CN 2011202405095U CN 201120240509 U CN201120240509 U CN 201120240509U CN 202152722 U CN202152722 U CN 202152722U
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- phase pump
- liquid phase
- control system
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Abstract
The utility model relates to a control system of a liquid-phase pump, which comprises a plurality of pressure collection modules, a plurality of leakage detection modules, a plurality of A/D conversion modules, a master controller, a plurality of motor control modules for the liquid-phase pump, and a communication module; each pressure collection module and each leakage detection module are used for collecting the pressure and leakage signals of the corresponding liquid-phase pump respectively; the outputs of each pressure collection module and each leakage detection module are connected with the input terminals of the corresponding A/D conversion modules; the output of each A/D conversion module is connected with the corresponding input terminal of the master controller; each output terminal of the master controller is connected with the corresponding signal input terminal of each motor control module for the liquid-phase pump; the output of each motor control module for the liquid-phase pump is used for controlling the work of the motor for the corresponding liquid-phase pump; and the master controller is communicated with an upper computer through the communication module. The control system of the liquid-phase pump can be simultaneously applied to various pump systems, is sensitive in control and high in response speed, convenient for a client to operate and select the own control system, achieves the sharing of the circuit in the production, and reduces the production cost.
Description
Technical field
The utility model relates to liquid phase analysis and liquid phase production field, makes that especially the liquid phase pump tool is to have superpressure to report to the police suddenly to stop, and 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 have superpressure to report to the police in addition and suddenly stop; 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 purpose of the utility model be single to 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.
The technological scheme of the utility model is:
A kind of liquid phase pump control system; It comprises a plurality of pressure acquisition modules, a plurality of leakage testing module, a plurality of A/D modular converter, master controller, a plurality of liquid phase pump motor control module and communication module; Described each pressure acquisition module and leakage testing module are respectively as the pressure of liquid phase pump control system, pressure, the leakage signal that the leakage signal input part is gathered corresponding liquid phase pump; 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 through communication module and upper-position unit.
The pressure acquisition module of the utility model is a pressure transducer.
The leakage testing module of the utility model is a moisture sensor.
Be connected in series differential amplifier circuit between pressure acquisition module of the utility model and the A/D modular converter.
The communication module of the utility model comprises photoelectric isolation module, RS232 Interface Module and RS422 Interface Module.
The beneficial effect of the utility model:
The liquid phase pump control system of the utility model 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 is high with stability, and pressure pulsation is little; Possesses the plunger automatic cleaning function; Unsteady plunger, the design of series connection pump head.
The liquid phase pump control system of the utility model can realize that pressure detects demonstration in real time, has high low pressure overload alarm function.
The utility model 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 the theory diagram of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Like Fig. 1, shown in 2; A kind of liquid phase pump control system; It is characterized in that it comprises that a plurality of pressure acquisition modules, a plurality of leakage testing module, a plurality of A/D modular converter, master controller (adopt one chip microcomputer; Model can be CPU:C8051F120), a plurality of liquid phase pump motor control module (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, pressure, the leakage signal that the leakage signal input part is gathered corresponding liquid phase pump; 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, and 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 through communication module and upper-position unit.
The pressure acquisition module of the utility model is pressure transducer (model can be SM24HY01); The leakage testing module is glass packaged thermosensitive resistor (model can be ATH10KL2).
The utlity model has the superpressure warning and suddenly stop and the automatic measuring ability of leakage, 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 utility model and the A/D modular converter.
The communication module of the utility model 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 are 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 data amount transmitted is few, certain and software programming communication protocol has very big relation, and 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, designs instead upper-position unit function to 422 bus systems specially; Do not having under the situation of PC, the client only need select our cheap intelligent touch control system, just instead PC; And realize all control and data processing function, and the simple and simplified control in interface, the other client uses notebook computer to control; And notebook computer does not often have serial ports; Be 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 practical implementation:
Master controller comprises two-part: power-supply system and miniature processing system; Power supply of mainly completion system of power-supply system and the power supply of control step motor, main output have the 24V-1A electric current to supply 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 provide the analog circut power supply, and main power supply system has pressure transducer to gather modular pressure, leakage testing module, system AD modular converter;
Miniature control system: this minimum system is based on enhancement mode single-chip microcomputer C8051F120 design completion; The main motor pulses complex functionality of accomplishing is decided frequency range 0.1HZ to 10KHZ, realizes that pulse is adjustable; 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 through 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, do not receive the PC influence circuit for reaching, design here adopts photoelectricity to isolate, and that breaks off 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 accomplished 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 through optocoupler 6N137 electrical equipment isolates, making system receive outer Jie influences 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 through difference, realizes the pipeline fluid pressure through 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 utility model does not relate to all identical with the existing technology existing technology that maybe can adopt of part to be 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 module, a plurality of A/D modular converter, master controller, a plurality of liquid phase pump motor control module and communication module; Described each pressure acquisition module and leakage testing module are respectively as the pressure of liquid phase pump control system, pressure, the leakage signal that the leakage signal input part is gathered corresponding liquid phase pump; 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 through 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 |
|---|---|---|---|
| CN2011202405095U CN202152722U (en) | 2011-07-09 | 2011-07-09 | Control system of liquid-phase pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202405095U CN202152722U (en) | 2011-07-09 | 2011-07-09 | Control system of liquid-phase pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152722U true CN202152722U (en) | 2012-02-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202405095U Expired - Fee Related CN202152722U (en) | 2011-07-09 | 2011-07-09 | Control system of liquid-phase pump |
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| CN (1) | CN202152722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220966A (en) * | 2011-07-09 | 2011-10-19 | 江苏迪沃特仪器设备科技有限公司 | Liquid pump control system |
-
2011
- 2011-07-09 CN CN2011202405095U patent/CN202152722U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220966A (en) * | 2011-07-09 | 2011-10-19 | 江苏迪沃特仪器设备科技有限公司 | Liquid pump control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20170709 |