CN101852640A - Weighing system with multipoint correction and control and weighing and correcting methods thereof - Google Patents
Weighing system with multipoint correction and control and weighing and correcting methods thereof Download PDFInfo
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- CN101852640A CN101852640A CN 201010179546 CN201010179546A CN101852640A CN 101852640 A CN101852640 A CN 101852640A CN 201010179546 CN201010179546 CN 201010179546 CN 201010179546 A CN201010179546 A CN 201010179546A CN 101852640 A CN101852640 A CN 101852640A
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Abstract
The invention discloses a weighing system with multipoint correction and control and weighing and correcting methods thereof. The system consists of an upper management computer, a lower computer, a weighing transmitter, a weighing sensor and a weighing hopper. The weighing method comprises the following steps: a weight signal of the acquired material weighed in the weighing hopper is sent to the weighing transmitter by using the weight sensor, a voltage signal, namely the weight signal, is converted into a standard current signal and the standard current signal is sent to the lower computer by the weighing transmitter, the lower computer controls the weighing device according to the set control programs, and the upper management computer monitors the lower computer and sets the control program of the lower computer. The correcting method comprises the following steps: during correction, weights in preset quantity are added to the weighing device in advance, value of the standard current signal output by the weighing transmitter and value of the weights are stored in the upper computer after the weighing device is stabilized, and the correct comes to an end when the weights on the weighing device reach the range. The weighing system has fast and accurate correction and enhanced dynamic measurement accuracy.
Description
Technical field
The present invention relates to the weighing system of various weighing devices and weigh and the school claims method, especially be fit to the weighing device that range ability is big, the school claims difficulty.The quick school of Cement Concrete Mixing, asphalt concrete mixer is claimed and improves measuring accuracy and played bigger effect.
Background technology
At present, weighing device has by instrument control metering, has by PLC control metering.Two point form is adopted in the calibration of weighing device more, promptly calibrate zero point and full scale point A (X1, Y1).Think that point between zero point and the A point all on the line that zero point and A are ordered, both thought that it was linear claiming.Because the measuring accuracy of weighing device (linear quality) is influenced by the shape, structure of quantity, the weighing device of LOAD CELLS etc., cause linear badly, even zero point and A point are calibrated, most intermediate point is not on straight line 0A.May be that off-straight 0A is a lot of as the dotted line in the accompanying drawing 1.The school claims comparatively complicated, difficult.The school claims also to differ and reaches the regulation permissible accuracy surely repeatedly, and the school claims that personnel's workload is big, and the dynamic measurement precision also is affected simultaneously.
Summary of the invention
The present invention seeks to provide a kind of and have that the multiple spot school claims and the weighing system controlled and weigh and the school claims method at the defective that prior art exists.
The present invention adopts following technical scheme for achieving the above object:
The present invention has the weighing system that the multiple spot school claims and controls, comprise slave computer serial connection weighing device, it is characterized in that also comprising senior management computer, weight transmitter, LOAD CELLS and weighing hopper, wherein weighing hopper is arranged on the weighing device, LOAD CELLS is arranged in the weighing hopper, connect the input end of slave computer behind the output terminal serial connection weight transmitter of LOAD CELLS, the input end of the output termination slave computer of senior management computer.
Preferably, described slave computer adopts Programmable Logic Controller (PLC).
Preferably, described weight transmitter employing model is the weight transmitter of TR700.
Preferably, described LOAD CELLS employing model is the LOAD CELLS of 619-1500-G.
Preferably, weighing system comprises n LOAD CELLS that is distributed on the weighing device, and wherein n is the natural number greater than 1.
Preferably, described slave computer also comprises the overload alarm device, the output terminal of the input termination slave computer of described overload alarm device.
Have that the multiple spot school claims and the Weighing method of the weighing system controlled, adopt LOAD CELLS that the weight signal of alleged material in the weighing hopper of gathering is sent into weight transmitter, adopting weight transmitter is the voltage signal of sending into that weight signal changes the normalized current signal into and sends into slave computer, slave computer is by the control program control weighing device of setting, and senior management computer is monitored slave computer and set the slave computer control program.
Has the Weighing method that the multiple spot school claims and controls, material upper and lower bound threshold values is set in the LOAD CELLS, the upper and lower bound that weight of material bears greater than weighing device in LOAD CELLS detects weighing device then sends alerting signal to overload alarm device by slave computer and reports to the police.
Preferably, when the school claims, on weighing device, add the counterweight of setting quantity at every turn, after weighing device is stable, the normalized current signal value of the output of weight transmitter and counterweight gravimetric value are saved in host computer, and behind the counterweight full scale on the weighing device, the school claims to finish.
The present invention is fast fast, the school claims that accurately, the dynamic measurement precision also is improved.
Description of drawings
Fig. 1 is that the two-point method school claims synoptic diagram.
Fig. 2 is a patent structure synoptic diagram of the present invention.
Fig. 3 is that the multipoint method school claims synoptic diagram.
Embodiment
Be elaborated below in conjunction with the technical scheme of accompanying drawing to invention:
The present invention is made up of senior management computer, slave computer Programmable Logic Controller (PLC), weight transmitter, LOAD CELLS, weighing hopper.LOAD CELLS gather alleged material in the weighing hopper weight signal, send into weight transmitter, weight transmitter and the electric signal of the mV level of sending into changed into the normalized current signal (4～20mA) send into Programmable Logic Controller, Programmable Logic Controller by the programmed control weighing device of setting.Flow process is seen accompanying drawing 2.
In accompanying drawing 3 (only 4 schools claim method for example).X-axis is the weight of alleged material, and Y-axis is the electric signal that weight transmitter is exported, and the electric signal that the weight of alleged material and weight transmitter are exported is corresponding one by one.
The object of the present invention is achieved like this:
When the school claims,, again LOAD CELLS stressed adjusted to basic identical at first measuring apparatus adjustment level, do not have interference with neighboring devices.The state of this moment is the zero point of title, the normalized current signal value and the weight of the output of weight transmitter at this moment is saved in host computer, and downloads in the slave computer.Add the counterweight of some at every turn on measuring apparatus, after claiming to stablize, the normalized current signal value and the weight of the output of weight transmitter are saved in host computer, after repeatedly, the counterweight that deserves to be called is basically near behind the full scale, and the school claims to finish.At this moment gathered many points, all deposited on the slave computer, slave computer according to these points, is calculated adjacent equation of line at 2 when initialization, and the parameter of these points and straight-line equation is kept in the permanent register.Get some points (greater than 2 points) in the range ability of weighing device, the gravimetric value of these points and corresponding electric signal were all preserved as coordinate points when the school claimed.These points are linked up, constituted the multistage broken line.Gravimetric value all on the multistage broken line, can be obtained according to the equation of line of every line segment in the broken line.Claim a corresponding line segment claims correspondence to the multiple spot school multistage broken line, error amount reducing at double by 2 schools.The straight line equation of line of each line segment is as follows:
Line segment 0A3:y=kx+b (k=y3/x3, b=0)
Line segment 0A1:y=k1x+b1 (k1=y1/x1, b1=0)
Line segment A1A2:y=k2x+b2 (k2=(y2-y1)/(x2-x1), b2=(x2y1-x1y2/ (x2-x1))
Line segment A2A3:y=k3x+b3 (k2=(y3-y2)/(x3-x2), b3=(x3y2-x2y3/ (x3-x2))
In metering process, slave computer is judged the line segment that this point is affiliated according to the normalized current signal value of weight transmitter output, calculates corresponding gravimetric value according to the equation of line of this line segment, and control hopper door with this value and open and close, on host computer, show this gravimetric value simultaneously.Claim that by the method school the school claims fast and accurately, the dynamic measurement precision also is improved.
Claims (9)
1. one kind has the weighing system that the multiple spot school claims and controls, comprise slave computer serial connection weighing device, it is characterized in that also comprising senior management computer, weight transmitter, LOAD CELLS and weighing hopper, wherein weighing hopper is arranged on the weighing device, LOAD CELLS is arranged in the weighing hopper, connect the input end of slave computer behind the output terminal serial connection weight transmitter of LOAD CELLS, the input end of the output termination slave computer of senior management computer.
2. according to claim 1 have a weighing system that the multiple spot school claims and controls, and it is characterized in that described slave computer adopts Programmable Logic Controller (PLC).
3. according to claim 1 have a weighing system that the multiple spot school claims and controls, and it is characterized in that it is the weight transmitter of TR700 that described weight transmitter adopts model.
4. according to claim 1 have a weighing system that the multiple spot school claims and controls, and it is characterized in that it is the LOAD CELLS of 619-1500-G that described LOAD CELLS adopts model.
5. according to claim 1 have a weighing system that the multiple spot school claims and controls, and it is characterized in that weighing system comprises n LOAD CELLS that is distributed on the weighing device, and wherein n is the natural number greater than 1.
6. according to claim 1 and 2 have a weighing system that the multiple spot school claims and controls, and it is characterized in that described slave computer also comprises the overload alarm device, the output terminal of the input termination slave computer of described overload alarm device.
7. one kind has based on claim 1 is described that the multiple spot school claims and the Weighing method of the weighing system controlled, it is characterized in that: adopt LOAD CELLS that the weight signal of alleged material in the weighing hopper of gathering is sent into weight transmitter, adopting weight transmitter is the voltage signal of sending into that weight signal changes the normalized current signal into and sends into slave computer, slave computer is by the control program control weighing device of setting, and senior management computer is monitored slave computer and set the slave computer control program.
8. according to claim 7 have a Weighing method that the multiple spot school claims and controls, it is characterized in that: material upper and lower bound threshold values is set in the LOAD CELLS, the upper and lower bound that weight of material bears greater than weighing device in LOAD CELLS detects weighing device then sends alerting signal to overload alarm device by slave computer and reports to the police.
9. one kind has based on claim 1 is described that the multiple spot school claims and the school of the weighing system controlled claims method, it is characterized in that: when the school claims, on weighing device, add the counterweight of setting quantity at every turn, after weighing device is stable, the normalized current signal value of the output of weight transmitter and counterweight gravimetric value are saved in host computer, behind the counterweight full scale on the weighing device, the school claims to finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010179546 CN101852640A (en) | 2010-05-21 | 2010-05-21 | Weighing system with multipoint correction and control and weighing and correcting methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010179546 CN101852640A (en) | 2010-05-21 | 2010-05-21 | Weighing system with multipoint correction and control and weighing and correcting methods thereof |
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| CN101852640A true CN101852640A (en) | 2010-10-06 |
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| CN 201010179546 Pending CN101852640A (en) | 2010-05-21 | 2010-05-21 | Weighing system with multipoint correction and control and weighing and correcting methods thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564558A (en) * | 2012-01-19 | 2012-07-11 | 徐工集团工程机械股份有限公司科技分公司 | Asphalt mixing station and multi-point electronic scale fault detecting device and detecting method for asphalt mixing station |
| CN102829853A (en) * | 2012-08-22 | 2012-12-19 | 中联重科股份有限公司 | Transmitter, multistage filter and weighing system |
| WO2013104159A1 (en) * | 2012-01-09 | 2013-07-18 | 湖南三一智能控制设备有限公司 | Concrete mixing station and quality monitoring system therefor |
| CN103348225A (en) * | 2011-02-08 | 2013-10-09 | 赛多利斯称量技术有限责任公司 | Load cell and method for adjusting a load cell |
| CN103411656A (en) * | 2013-07-18 | 2013-11-27 | 宇星科技发展(深圳)有限公司 | Automatic weighing device and automatic weighing and blanking method thereof |
| CN105109720A (en) * | 2015-07-16 | 2015-12-02 | 安徽正远包装科技有限公司 | Electronic weighing method of packaging machine |
| CN105109719A (en) * | 2015-07-16 | 2015-12-02 | 安徽正远包装科技有限公司 | Error control method of weighing machine |
| CN105129116A (en) * | 2015-07-16 | 2015-12-09 | 安徽正远包装科技有限公司 | Control method for electronic weighing machine |
| CN105527009A (en) * | 2014-09-29 | 2016-04-27 | 徐工集团工程机械股份有限公司 | Weighing system and weighing method having self-calibration function |
| CN108168679A (en) * | 2017-12-25 | 2018-06-15 | 山东钢铁股份有限公司 | A kind of long-range school of the big packet weighing sensor of conticaster claims system and method |
| CN112781676A (en) * | 2019-11-08 | 2021-05-11 | 九阳股份有限公司 | Capacity detection method based on motor attribute and food processing machine |
| CN114910150A (en) * | 2022-04-20 | 2022-08-16 | 慕思健康睡眠股份有限公司 | Calibration method and device of capacitive weight sensor, intelligent pad and storage medium |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103348225B (en) * | 2011-02-08 | 2015-05-20 | 赛多利斯实验室仪器有限责任两合公司 | Load cell and method for adjusting a load cell |
| CN103348225A (en) * | 2011-02-08 | 2013-10-09 | 赛多利斯称量技术有限责任公司 | Load cell and method for adjusting a load cell |
| WO2013104159A1 (en) * | 2012-01-09 | 2013-07-18 | 湖南三一智能控制设备有限公司 | Concrete mixing station and quality monitoring system therefor |
| CN102564558A (en) * | 2012-01-19 | 2012-07-11 | 徐工集团工程机械股份有限公司科技分公司 | Asphalt mixing station and multi-point electronic scale fault detecting device and detecting method for asphalt mixing station |
| CN102829853B (en) * | 2012-08-22 | 2015-12-09 | 中联重科股份有限公司 | Transmitter, multiple filter and weighing system |
| CN102829853A (en) * | 2012-08-22 | 2012-12-19 | 中联重科股份有限公司 | Transmitter, multistage filter and weighing system |
| CN103411656A (en) * | 2013-07-18 | 2013-11-27 | 宇星科技发展(深圳)有限公司 | Automatic weighing device and automatic weighing and blanking method thereof |
| CN105527009A (en) * | 2014-09-29 | 2016-04-27 | 徐工集团工程机械股份有限公司 | Weighing system and weighing method having self-calibration function |
| CN105109720A (en) * | 2015-07-16 | 2015-12-02 | 安徽正远包装科技有限公司 | Electronic weighing method of packaging machine |
| CN105109719A (en) * | 2015-07-16 | 2015-12-02 | 安徽正远包装科技有限公司 | Error control method of weighing machine |
| CN105129116A (en) * | 2015-07-16 | 2015-12-09 | 安徽正远包装科技有限公司 | Control method for electronic weighing machine |
| CN108168679A (en) * | 2017-12-25 | 2018-06-15 | 山东钢铁股份有限公司 | A kind of long-range school of the big packet weighing sensor of conticaster claims system and method |
| CN112781676A (en) * | 2019-11-08 | 2021-05-11 | 九阳股份有限公司 | Capacity detection method based on motor attribute and food processing machine |
| CN114910150A (en) * | 2022-04-20 | 2022-08-16 | 慕思健康睡眠股份有限公司 | Calibration method and device of capacitive weight sensor, intelligent pad and storage medium |
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Open date: 20101006 |