CN2814474Y - Real-time fluid metering controller - Google Patents
Real-time fluid metering controller Download PDFInfo
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- CN2814474Y CN2814474Y CN 200520071503 CN200520071503U CN2814474Y CN 2814474 Y CN2814474 Y CN 2814474Y CN 200520071503 CN200520071503 CN 200520071503 CN 200520071503 U CN200520071503 U CN 200520071503U CN 2814474 Y CN2814474 Y CN 2814474Y
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Abstract
The utility model relates to a real-time fluid metering controller, which is provided with a volume type quantitative pump and a drive motor of the quantitative pump. The utility model is characterized in that the real-time fluid metering controller is provided with a calculation controlling and processing device, and the drive motor is provided with a motor rotation number sensor, the output of which is connected with the calculation controlling and processing device. The output of the calculation controlling and processing device is connected with a controlling and actuating device of the drive motor. The inner part of the controlling and actuating device comprises the volume type quantitative pump and the drive motor. The calculation controlling and processing device is also connected with a metering displaying and regulating device which is used for displaying and regulating metering valves in a real-time way. The controlling and actuating device can adopt a step motor system, or a servo motor system, or the volume type quantitative pump which is driven by an AC asynchronous motor. The utility model has the advantages of high control precision, real-time display and regulation of the metering valves, high reliability, etc. The utility model has high performance-price ratio when working conditions of the metering control of a plurality of groups of fluids are carried out simultaneously. The utility model can adopt a three-phase asynchronous motor to control the working condition with low accuracy, therefore the cost is reduced.
Description
Technical field
The utility model relates to measuring apparatus and control device field, is specifically related to a kind of real-time fluid metering control device.
Background technology
In general flow control system, for the control of fluid metering, several modes below main the employing:
The use traffic meter;
Use dosing container, regularly add;
Use variable output pump, add continuously;
Use fixed displacement pump, add in short-term;
Have following a certain or several shortcoming with upper type:
The real-time regulated poor performance;
Variable shows not directly perceived;
Can not carry out the control of many group fluid meterings simultaneously.
Summary of the invention
The utility model will provide a kind of real-time fluid metering control device, and this device is by motor-driven positive displacement fixed displacement pump, and the revolution discharge capacity of fixed displacement pump is fixed, and therefore control the revolution of motor, can realize the measure control of fluid.This device is by man-machine interface, can show the metering with regulated fluid in real time, and can carry out the control of many group fluid meterings simultaneously.This device is divided into metering demonstration and regulating device, control computing and treating apparatus, controls actuating unit.
The technical scheme that realizes the foregoing invention purpose is: fluid metering control device in real time, be provided with the drive motor of positive displacement fixed displacement pump and this fixed displacement pump, and it is characterized in that, be provided with control computing and treating apparatus; Described drive motor is provided with the motor tachometer generator, the output of this sensor connects this control computing and treating apparatus, the output of control computing and treating apparatus connects the control actuating unit of drive motor, includes the drive motor of aforesaid positive displacement fixed displacement pump and this fixed displacement pump in this control actuating unit.
Described control computing and treating apparatus can be PLC, PC, Single Chip Microcomputer (SCM) system, other integrated circuit (IC) system etc., function is to set metering initial value, variable upper and lower limit, current metering setting value is sent to control computing and treating apparatus and metering and display device, variable is carried out calculation process, to obtain the output controlled variable, output to the control actuating unit.
In above the control computing and treating apparatus, can also be connected with metering and show and regulating device, with real-time demonstration and accommodometer value.
Described metering demonstration and regulating device are a kind of man-machine interfaces, can be touch-screen, operation screen, text display etc., function is to show current metering setting value, revises setting value and amended value is sent to control computing and treating apparatus, display control information.
The control actuating unit can be that stepping motor system, servo electrical machinery system, AC induction motor etc. drive the positive displacement fixed displacement pump, and function is to accept the control of control computing and treating apparatus, and the fluid of metering is specified in output.
The real-time fluid metering control device that the utility model provides has the control accuracy height, can show in real time, the accommodometer value, and the reliability advantages of higher, the operating modes for carrying out the control of many group fluid meterings simultaneously have high cost performance.For the not high operating mode of control accuracy, can use threephase asynchronous machine, to reduce cost.
Description of drawings
Fig. 1 is the system chart of this device;
Fig. 2 is embodiment 1, controls the systematic schematic diagram of four groups of solution simultaneously;
Fig. 3 is an embodiment workflow block diagram.
Embodiment
Embodiment 1, with reference to Fig. 1～Fig. 3:
Pump 1, pump 2, pump 3 etc. are the plunger-type quantitative pump, by motor-driven; M1, M2, M3 etc. are motor, and wherein M1, M2 are stepper motor, and M3 is a threephase asynchronous machine; S1 is a start button, and S2 is a stop button; KM1, KM2 are contactor; Threephase asynchronous machine M3 is respectively by contactor KM1, KM2 control start and stop; Stepper motor M1, M2 are respectively by stepper motor driver 1,2 controls; Q0.0, Q0.1 are pulse output end, the output trigger action stepper motor driver of Q0.0, Q0.1, and driver will be exported the square-wave pulse of fixed number, and stepper motor is rotated by the step number of correspondence; Q0.2, Q0.3 are stepper motor direction control end; PLC is a programmable controller; Text display connects with programmable controller by communication cable.The revolution discharge capacity of fixed displacement pump is fixed, therefore fluid metering control is converted into the revolution control of motor, the number of pulses of the Q0.0 end by control PLC and frequency be the revolution and the rotating speed of control step motor accurately, general stepper motor step angle is all in 10 °, so control accuracy depends primarily on the precision of pump; When not high, can use threephase asynchronous machine for control accuracy, the revolution control of motor is converted into control working time of motor.Solution 1, solution 2 measuring accuracies are had relatively high expectations in this system, and measuring accuracies such as solution 3 require medium; Therefore use pump 1, pump 2 delivered solution 1, solution 2, use delivered solution 3...... such as pump 3, various solution are selected the plunger fixed displacement pump of suitable discharge capacity and precision according to metering size, control accuracy.
In this system, pass through program setting, make the text display district of text display show the setting value of solution 1, solution 2, solution 3...... in real time, can set every width of cloth only shows 1 setting value, shows 2 setting values, shows 4 setting values, when setting value has not shown, can by " on ", the D score key browses; When cursor is parked in a certain setting value, make this setting value enter the modification state by " entering " key, can by " on ", D score revises setting value, finishes modification by " entering " key; Also can pass through " solution 1 ", " solution 2 ", " solution 3 ", " solution 4 " key independent displaying setting value.This group setting value is placed on respectively in the demonstration variable store of PLC, and for example among VW70, VW110, VW150, the VW190, corresponding enable bit is respectively V68.2, V108.2, V148.2, V188.2; Measure according to routine, the initialize routine of PLC is one group of intermediate variable storer (VW200 for example, VW210, VW220, VW230) first initialize, and on setting accordingly, low extreme value, text display reads initial value and shows, after a certain setting value is modified, pass amended value back corresponding variable store, and with the enable bit set of correspondence, after PLC detects enable bit set, with return value and last, low extreme value compares, if last, in the smallest limit scope, then setting value is revised as return value, if then setting value is revised as higher extreme value, if then setting value is revised as low extreme value less than low extreme value greater than higher extreme value.If controlling object is a stepper motor driver, then variable is converted into corresponding umber of pulse, writes the control word register, and fill in train of impulses multistage envelope table, carry out the pulse output order and can realize stepper motor revolution and rotating speed control, thereby realize fluid metering control.If controlling object is a threephase asynchronous machine, then variable is converted into the corresponding time, write timer, the working time of control motor, can realize fluid metering control.If want four kinds of solution all will realize 11 flow control, select pump capacity to be 2ml/r, two step angles are 10 stepper motor, then umber of pulse is 18000; Two rated speeds are the three phase electric machine of 1480r/min, and then the control time is 20.23s.
Claims (5)
1, a kind of real-time fluid metering control device, be provided with the drive motor of positive displacement fixed displacement pump and this fixed displacement pump, it is characterized in that, be provided with control computing and treating apparatus, described drive motor is provided with the motor tachometer generator, the output of this sensor connects control computing and treating apparatus, and the output of control computing and treating apparatus connects the control actuating unit of drive motor, includes the drive motor of aforesaid positive displacement fixed displacement pump and this fixed displacement pump in this control actuating unit.
2, according to the described real-time fluid metering control device of claim 1, it is characterized in that the positive displacement fixed displacement pump that described control actuating unit adopts stepping motor system, servo electrical machinery system or AC induction motor to drive.
According to the described real-time fluid metering control device of claim 1, it is characterized in that 3, described control computing is connected with the control actuating unit of multichannel drive motor respectively simultaneously with the output for the treatment of apparatus.
4, according to claim 1 or 2 or 3 described real-time fluid metering control device, it is characterized in that, also be connected with metering on control computing and the treating apparatus and show and regulating device.
According to the described real-time fluid metering control device of claim 4, it is characterized in that 5, described control computing and treating apparatus adopt PLC, PC, single-chip microcomputer or integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071503 CN2814474Y (en) | 2005-05-11 | 2005-05-11 | Real-time fluid metering controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520071503 CN2814474Y (en) | 2005-05-11 | 2005-05-11 | Real-time fluid metering controller |
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| Publication Number | Publication Date |
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| CN2814474Y true CN2814474Y (en) | 2006-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520071503 Expired - Fee Related CN2814474Y (en) | 2005-05-11 | 2005-05-11 | Real-time fluid metering controller |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179480A (en) * | 2010-11-25 | 2011-09-14 | 苏州苏铸成套装备制造有限公司 | Resin quantification device |
| CN102520320A (en) * | 2011-12-06 | 2012-06-27 | 西安交通大学 | Contaminating fluid flow control apparatus based on electric leakage trace appearance resistance characteristic and electrical erosion resistance property test of electrical insulating material and method |
| CN102629116A (en) * | 2012-04-12 | 2012-08-08 | 曾毅祺 | Control circuit and fluid output control device |
| CN107614121A (en) * | 2015-06-01 | 2018-01-19 | 深圳市大疆创新科技有限公司 | The sprinkling system of feedback with fluid flow and rotating speed |
| US10400758B2 (en) | 2015-06-01 | 2019-09-03 | SZ DJI Technology Co., Ltd. | Brushless pump motor system |
-
2005
- 2005-05-11 CN CN 200520071503 patent/CN2814474Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179480A (en) * | 2010-11-25 | 2011-09-14 | 苏州苏铸成套装备制造有限公司 | Resin quantification device |
| CN102520320A (en) * | 2011-12-06 | 2012-06-27 | 西安交通大学 | Contaminating fluid flow control apparatus based on electric leakage trace appearance resistance characteristic and electrical erosion resistance property test of electrical insulating material and method |
| CN102629116A (en) * | 2012-04-12 | 2012-08-08 | 曾毅祺 | Control circuit and fluid output control device |
| CN107614121A (en) * | 2015-06-01 | 2018-01-19 | 深圳市大疆创新科技有限公司 | The sprinkling system of feedback with fluid flow and rotating speed |
| US10266265B2 (en) | 2015-06-01 | 2019-04-23 | SZ DJI Technology Co., Ltd. | Spraying system having a liquid flow and rotating speed feedback |
| US10400758B2 (en) | 2015-06-01 | 2019-09-03 | SZ DJI Technology Co., Ltd. | Brushless pump motor system |
| CN107614121B (en) * | 2015-06-01 | 2019-10-25 | 深圳市大疆创新科技有限公司 | The sprinkling system of feedback with fluid flow and revolving speed |
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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: 20060906 Termination date: 20100511 |