CN107489610A - Multichannel precision measures apparatus for controlling pump and its measurement control method - Google Patents
Multichannel precision measures apparatus for controlling pump and its measurement control method Download PDFInfo
- Publication number
- CN107489610A CN107489610A CN201710974027.4A CN201710974027A CN107489610A CN 107489610 A CN107489610 A CN 107489610A CN 201710974027 A CN201710974027 A CN 201710974027A CN 107489610 A CN107489610 A CN 107489610A
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- China
- Prior art keywords
- module
- weight
- pumping
- pump
- charging basket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Measuring Volume Flow (AREA)
- Flow Control (AREA)
Abstract
The present invention relates to a kind of multichannel precision metering apparatus for controlling pump and its measurement control method,Belong to metering pump technical field,Single or multiple measuring pumps can be controlled by providing one kind,Realize the high-precision automatic gauge of liquid and the multichannel precision metering apparatus for controlling pump and its measurement control method of combination,Used technical scheme is to include the control module for data processing and control,For detecting the charging basket detection sensor of charging basket,For detecting the weight detecting module of weight of material,Formula memory module and ancillary equipment for the human-computer interaction module of human users and for storing material formula,Control module by telecommunication circuit respectively with weight detecting module,Human-computer interaction module,Formula memory module and ancillary equipment are connected,Control module detects circuit by charging basket and is connected with charging basket detection sensor,Signal generating circuit is connected with multiple measuring pumps；The present invention is widely used in measuring pump.
Description
Technical field
The present invention relates to a kind of multichannel precision metering apparatus for controlling pump and its measurement control method, belong to measuring pump technology
Field.
Background technology
A variety of metering apparatus for controlling pump on liquid meter field at present be present, be all generally that flow is exchanged for using angle
Simple control mode, function is simple, and measuring accuracy is low, and control model is single, can not ensure the accuracy of liquid output liquid amount, more
Individual measuring pump can not freely coordinate intensive work according to requirements such as respective flow, flow velocitys, can not meet user's accurate measurement and
The requirement of formula combination.
Because universal measuring pump metering method is all based on the maximum volume of pump chamber, in a pump cycles
Interior, a part of kinetic energy and time are extruded pump chamber, and to reduce the push that pump chamber volume realizes liquid, the liquid in pump chamber is discharged
Afterwards, another part kinetic energy and time make pump chamber volume restore to maximum with liquid make-up, when pump chamber volume is restored, go out liquid quilt
Interrupt and even cause resorption, form nonlinear pulse ripple, cause measuring pump in traffic direction, speed of service identical situation
It is lower the uneven pulsation problem of liquid output occur, liquid measure of its output can not be represented with the angle of its operating.
For the measuring pump of flexible pump chamber structure, in the different speeds of service, flow resistance and elastomeric material fatigue journey
Under the conditions of the differences such as degree, the rebound performance of elastomeric material is directly affected, by again when resilience time deficiency or resilience topping up do not complete
Secondary extruding pumping, can all cause the change of pump chamber filling amount, cause in the case of operation angle identical, because the speed of service
Difference that is different and causing conveying liquid measure.
Conventional liquid in various degree can mix composition of air after the behavior that it is fluctuated is made by stirring, transport etc.
Among entering liquid, the different bubble of volume is formed, composition of air occupies the space of liquid so that in the case of same volume
Cause the difference of liquid mass flow, universal measuring pump can not be detected and controlled comprising composition of air in a liquid, cause liquid
The missing of output quantity.
Universal measuring pump is to estimate liquid with pumping the product of number according to known pump chamber volume in the process of running
Output quantity, the fine error of pump chamber volume, after by multiple pumping circulation, error is amplified at double so that actual
Very big error is formed between output liquid amount and expected liquid measure.
The content of the invention
To solve technical problem existing for prior art, the invention provides one kind can control single or multiple meterings
Pump, realize the high-precision automatic gauge of liquid and the multichannel precision metering apparatus for controlling pump of combination and its measure control side
Method.
To achieve the above object, the technical solution adopted in the present invention is that multichannel precision measures apparatus for controlling pump, including
For the control module of data processing and control, for detecting the charging basket detection sensor of charging basket, for detecting weight of material
Weight detecting module, for the human-computer interaction module of human users, and for store material formula formula memory module and
Ancillary equipment, the control module built-in communication circuit, signal generating circuit and charging basket detection circuit, the control module pass through
Telecommunication circuit is connected with weight detecting module, human-computer interaction module, formula memory module and ancillary equipment respectively, the control
Molding block detects circuit by charging basket and is connected with charging basket detection sensor, and the signal generating circuit is driven by signal respectively
Circuit is connected with multiple measuring pumps.
Preferably, the telecommunication circuit by bus and weight detecting module, human-computer interaction module, formula memory module with
And ancillary equipment is connected, the bus is concurrently or sequentially bus, and bus be 8080 buses, spi bus, I2C buses,
RS232 buses, RS485 buses, usb bus, CAN.
Preferably, the weight detecting module includes microprocessor, AD conversion chip and weight sensor, and the weight passes
Sensor is connected by AD conversion chip with microprocessor, and the microprocessor through bus is connected with telecommunication circuit.
Preferably, the human-computer interaction module includes touch-screen, TFT display screens and physical switch button.
Multichannel precision measuring pump measurement control method, including metering apparatus for controlling pump, the measurement control method are divided into three
The individual stage；
Fill pumping stages：Control module calculates pre- according to the target weight of setting, the automatic rational expected liquid measure of setting
The quantity of phase pulse, control measuring pump carries out pumping liquid measure according to the speed of service of setting, until terminating after reaching expected liquid measure
Pumping, then the currently practical liquid outlet quantity further according to weight detecting module feedback and expected liquid outlet quantity, enter action to operational factor
State amendment；
Accurate pumping stages：Control module is according to the difference of current output liquid amount and target weight, with reference to the operation of current generation
After parameter carries out COMPREHENSIVE CALCULATING, the expection number of pulses accurately pumped is drawn, being pumped to for accurate stage is performed with medium speed
Target weight, after the pumping in the accurate stage terminates, according to the currently practical liquid outlet quantity of weight detecting module feedback and target weight
Calculating difference is measured, when difference enters within allowable error scope, completes the pumping of the passage, otherwise enters compensation pumping rank
Section；
Compensate pumping stages：According to the difference of current output liquid amount and target weight, carried out with reference to the operational factor of current generation
After COMPREHENSIVE CALCULATING, the expection number of pulses of compensation pumping is drawn, target weight is pumped to low speed execution compensated stage,
After the pumping of compensated stage terminates, it is poor to be calculated according to the currently practical liquid outlet quantity of weight detecting module feedback and target weight
Value, when difference enters within allowable error scope, the pumping of the passage is completed, otherwise reopens the low-speed pump of compensated stage
Journey is passed through, until meeting the allowable error scope of target weight.
Compared with prior art, the present invention has following technique effect：The present invention utilizes control module and weight detecting mould
Block cooperates, and the closed-loop feedback manner using weight as measurement unit, each passage is precisely accomplished using the method for stage control
Liquid measure output, control device accurately monitors the actual liquid outlet quantity in measuring pump each stage in running, and passes through various flow rate
Algorithm to metering pump operation carry out dynamic realtime accurate control, avoid measuring pump in pumping procedure because liquid of being pulsed,
The measuring error that many disturbing factors such as flexible member fatigue, gas-liquid mixed, accumulated error are brought, the pumping of liquid can be missed
Difference control realizes the high-precision automatic gauge of liquid and combination in controllable minimum zone.With reference to human-computer interaction module with
Formulation data memory module, can easily it store or using multigroup formulation data, to manage the filling of liquid material and preparation,
The accurate control of the accurate complicated multi-channel metering pump such as any liquid measure, flow velocity and application model is realized in allowed limits.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of weight detecting module in the present invention.
Fig. 3 is the structural representation of human-computer interaction module in the present invention.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
As shown in figure 1, multichannel precision measures apparatus for controlling pump, including the control module for data processing and control,
For detecting the charging basket detection sensor of charging basket, for detecting the weight detecting module of weight of material, the people for human users
Machine interactive module, and for storing the formula memory module and ancillary equipment of material formula, the control module built-in communication
Circuit, signal generating circuit and charging basket detection circuit, control module by telecommunication circuit respectively with weight detecting module, man-machine friendship
Mutual module, formula memory module and ancillary equipment are connected, and telecommunication circuit is using bus mode and weight detecting module, man-machine
Interactive module, formula memory module and ancillary equipment are connected, and bus is concurrently or sequentially bus, and bus is 8080 total
Line, spi bus, I2C buses, RS232 buses, RS485 buses, usb bus, CAN.Control module detects electricity by charging basket
Road is connected with charging basket detection sensor, and signal generating circuit is connected by signal drive circuit with multiple measuring pumps respectively.
Ancillary equipment can be printer, two-dimentional decoding apparatus etc..
The present invention is worked using control module and weight detecting module cooperative, the closed loop feedback side using weight as measurement unit
Formula, the actual liquid outlet quantity of measuring pump is monitored in real time, using the method combination various flow rate algorithm of stage control, is precisely accomplished each
The liquid measure output of passage, the measuring error that a variety of disturbing factors can be avoided to bring metering on the premise of without accumulated error.
Control module can use the microcontroller of Multiple Type as central processing unit.Control device is also equipped with formulation data store function
With special calibration function and multi-protective function.Calibration function, can be to the operation of each stage independence of each measuring pump
The operational factors such as speed, range of operation and penalty coefficient are tested and corrected.In the case of charging basket abnormal state, forbid
Or the operation of pause measuring pump.In normal pumping procedure, the output liquid amount of control device on-line checking measuring pump, occur because
In the case that the failures such as scarce liquid, pipeline breakage and measuring pump operation exception cause out liquid exception, control device can actively suspend
The operation of measuring pump, to prevent security incident occurs.
Human-computer interaction module is configured to the operational factor of all measuring pumps, and control module can be to the operational factor of setting
Reasonable evaluation is carried out, and operational factor is calculated or changed as needed.Weight detecting module includes Multiple Type
Microprocessor, AD conversion chip and weight sensor, weight sensor is connected by AD conversion chip with microprocessor, micro-
Processor is connected by bus with telecommunication circuit.Weight detecting module is communicated with bus mode with control module, for liquid measure
Measurement, conversion and by the data of liquid measure to control module Real-time Feedback.Formula memory module can use a variety of buses and model
Memory chip be data storage.Formula memory module is communicated with bus mode with control module, can be preserved or be used
Multigroup formulation data for being used to fill.The drive signal of multichannel variable elevation speed curve can be transmitted in signal generating circuit, passes through letter
Number drive circuit is connected with motors of metering pumps controller, and a metering pump unit is controlled per road signal.Signal drive circuit is with difference
Divide or TTL circuits send signal with photoelectric isolating circuit for motors of metering pumps controller.Charging basket detects circuit and detection sensor
Connection, for detecting the state of charging basket in the course of work.Human-computer interaction module includes touch-screen, TFT display screens and physical switch
Button.Human-computer interaction module is communicated with bus mode with control module, for general output, respectively measure flow rate pump, each metering
The portfolio ratio or flow of pump and required a variety of application models and parameter are configured, and the direction of control device, are opened
The operation of the functions such as beginning, pause, stopping.
Specific control method is as follows, is worked using microcontroller and weight detecting module cooperative, single by metering of weight
Position, realizes closed loop feedback control.Control module according to each passage desired flow, flow velocity intelligence rank is made to pumping work
Section control process, each stage include the operational factors such as each self-corresponding speed of service, range of operation and penalty coefficient.Each
In the implementation procedure in individual stage, control device all carries out on-line monitoring to current output liquid amount, and according to the different stages to meter
The operation for measuring pump carries out corresponding control process.
It is specifically divided into three phases；Fill pumping stages：Control module is according to the target weight of setting, and automatic setting is rationally
Expection liquid measure, and calculate the quantity of expected pulse, control measuring pump carries out pumping liquid measure according to the speed of service of setting, directly
Terminate pumping to after reaching expected liquid measure, then go out liquid further according to the currently practical liquid outlet quantity and expection of weight detecting module feedback
Amount, dynamic corrections are carried out to operational factor；Accurate pumping stages：Control module is according to the difference of current output liquid amount and target weight
It is worth, after the operational factor progress COMPREHENSIVE CALCULATING with reference to the current generation, the expection number of pulses accurately pumped is drawn, with medium speed
Perform the accurate stage is pumped to target weight, after the pumping in the accurate stage terminates, according to working as weight detecting module feedback
Preceding actual liquid outlet quantity and target weight calculating difference, when difference enters within allowable error scope, the pumping of the passage is completed,
Otherwise compensation pumping stages are entered；Compensate pumping stages：According to the difference of current output liquid amount and target weight, with reference to current rank
After the operational factor of section carries out COMPREHENSIVE CALCULATING, the expection number of pulses of compensation pumping is drawn, compensated stage is performed with low speed
Be pumped to target weight, after the pumping of compensated stage terminates, according to the currently practical liquid outlet quantity of weight detecting module feedback
With target weight calculating difference, when difference enters within allowable error scope, the pumping of the passage is completed, is otherwise reopened
The slow-speed pumping process of compensated stage, until meeting the allowable error scope of target weight.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., all should be wrapped within the scope of the present invention.
Claims (5)
1. multichannel precision measures apparatus for controlling pump, it is characterised in that：Including the control module for data processing and control, use
In the charging basket detection sensor of detection charging basket, for detecting the weight detecting module of weight of material, for the man-machine of human users
Interactive module, and for storing the formula memory module and ancillary equipment of material formula, the control module built-in communication electricity
Road, signal generating circuit and charging basket detection circuit, the control module by telecommunication circuit respectively with weight detecting module, man-machine
Interactive module, formula memory module and ancillary equipment are connected, and the control module detects circuit by charging basket and examined with charging basket
Survey sensor to be connected, the signal generating circuit is connected by signal drive circuit with multiple measuring pumps respectively.
2. multichannel precision according to claim 1 measures apparatus for controlling pump, it is characterised in that：The telecommunication circuit passes through
Bus is connected with weight detecting module, human-computer interaction module, formula memory module and ancillary equipment, and the bus is parallel
Or universal serial bus, and bus is 8080 buses, spi bus, I2C buses, RS232 buses, RS485 buses, usb bus, CAN total
Line.
3. multichannel precision according to claim 1 measures apparatus for controlling pump, it is characterised in that：The weight detecting module
Including microprocessor, AD conversion chip and weight sensor, the weight sensor passes through AD conversion chip and microprocessor phase
Connection, the microprocessor through bus are connected with telecommunication circuit.
4. multichannel precision according to claim 1 measures apparatus for controlling pump, it is characterised in that：The human-computer interaction module
Including touch-screen, TFT display screens and physical switch button.
5. multichannel precision measuring pump measurement control method, including metering apparatus for controlling pump, it is characterised in that：The measure control side
Method is divided into three phases；
Fill pumping stages：Control module calculates pre- according to the target weight of setting, the automatic rational expected liquid measure of setting
The quantity of phase pulse, control measuring pump is pumped according to the speed of service of setting, until terminate pumping after reaching expected liquid measure,
Then the currently practical liquid outlet quantity further according to weight detecting module feedback and expected liquid outlet quantity, enter Mobile state to operational factor and repair
Just；
Accurate pumping stages：Control module is according to the difference of current output liquid amount and target weight, with reference to the operation of current generation
After parameter carries out COMPREHENSIVE CALCULATING, the expection number of pulses accurately pumped is drawn, being pumped to for accurate stage is performed with medium speed
Target weight, after the pumping in the accurate stage terminates, according to the currently practical liquid outlet quantity of weight detecting module feedback and target weight
Calculating difference is measured, when difference enters within allowable error scope, completes the pumping of the passage, otherwise enters compensation pumping rank
Section；
Compensate pumping stages：According to the difference of current output liquid amount and target weight, carried out with reference to the operational factor of current generation
After COMPREHENSIVE CALCULATING, the expection number of pulses of compensation pumping is drawn, target weight is pumped to low speed execution compensated stage,
After the pumping of compensated stage terminates, it is poor to be calculated according to the currently practical liquid outlet quantity of weight detecting module feedback and target weight
Value, when difference enters within allowable error scope, the pumping of the passage is completed, otherwise reopens the low-speed pump of compensated stage
Journey is passed through, until meeting the allowable error scope of target weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974027.4A CN107489610B (en) | 2017-10-19 | 2017-10-19 | Multi-channel precise metering pump control device and metering control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710974027.4A CN107489610B (en) | 2017-10-19 | 2017-10-19 | Multi-channel precise metering pump control device and metering control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489610A true CN107489610A (en) | 2017-12-19 |
| CN107489610B CN107489610B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710974027.4A Active CN107489610B (en) | 2017-10-19 | 2017-10-19 | Multi-channel precise metering pump control device and metering control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223348A (en) * | 2017-12-29 | 2018-06-29 | 凯龙高科技股份有限公司 | A kind of offline testboard of SCR metering pumps |
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| WO2014053182A1 (en) * | 2012-10-04 | 2014-04-10 | Ecolab Inc. | A semi-automatic flushing system for flushing a water line and an according method |
| CN207278486U (en) * | 2017-10-19 | 2018-04-27 | 王树伟 | Multichannel precision measures apparatus for controlling pump |
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2017
- 2017-10-19 CN CN201710974027.4A patent/CN107489610B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1846664A (en) * | 2006-01-13 | 2006-10-18 | 葛晓松 | Liquid Chinese medicine compounding method and system |
| CN201613043U (en) * | 2009-03-18 | 2010-10-27 | 丹东东方机电工程有限公司 | On-line medicament adding device of closed loop detection and control PID regulating system |
| CN202482119U (en) * | 2012-01-18 | 2012-10-10 | 浙江省海洋开发研究院 | Water treatment automatic dosing system |
| WO2014053182A1 (en) * | 2012-10-04 | 2014-04-10 | Ecolab Inc. | A semi-automatic flushing system for flushing a water line and an according method |
| CN207278486U (en) * | 2017-10-19 | 2018-04-27 | 王树伟 | Multichannel precision measures apparatus for controlling pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108223348A (en) * | 2017-12-29 | 2018-06-29 | 凯龙高科技股份有限公司 | A kind of offline testboard of SCR metering pumps |
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| Publication number | Publication date |
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| CN107489610B (en) | 2023-07-04 |
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