CN1412532A - On-line automatic monitoring and check equipment for weighing equipment - Google Patents
On-line automatic monitoring and check equipment for weighing equipment Download PDFInfo
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- CN1412532A CN1412532A CN 01136563 CN01136563A CN1412532A CN 1412532 A CN1412532 A CN 1412532A CN 01136563 CN01136563 CN 01136563 CN 01136563 A CN01136563 A CN 01136563A CN 1412532 A CN1412532 A CN 1412532A
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Abstract
The on-line autoamtic monitoring and correcting equipment for weighing equipment is formed from high-accuracy sensor, instrument panel, correcting key, support board, standard balance weights, signal synthesize, testing board, conversion switch, memory button, comparison button, working power supply, bottom plate and socket. It can accurately correct the performance of bearing device, sensor and meters.
Description
The present invention relates to a kind of device that can carry out on-line automatic supervision and verification to weighing apparatus.Be to monitor automatically that weighing apparatus is in when metering misalignment whether; If misalignment or break down can judge it specifically is at which position; And a kind of new device that can calibrate weighing apparatus easily.
At present, weighing apparatus uses very general.No matter be in production run control or daily metering.But also exist several difficult points.Mainly containing: one. weighing apparatus is large-scale weighing machine especially, and as up to a hundred tons weighter for truck, the misalignment situation appears in track scale and day cart balance etc. in use, is difficult in time finding and confirming.Two. weighing apparatus breaks down, and it is cumbersome to carry out check and analysis, dismantle equipment or line or the like.All the more so to the weighing apparatus that uses in large-scale weighing machine or the production run control.Three. weighing apparatus is carried out assay calibration relatively wastes time and energy with expensive.Carrying out the unique method of assay calibration as the weighter for truck of 100 tons of ranges, is to carry out with big counterweight.Be put into scale by 100 tons big counterweights and get on to carry out verification.If do not pass through for the first time, just equipment is adjusted or overhauled, carry out the second time then, for the third time, until qualified.This method workload is big, is difficult for often carrying out.But, therefore also can only do like this owing to there is not other good method at present.So, no matter be new erecting equipment after, after device fails was got rid of, after the normal maintenance of equipment, periodic calibration etc. all can only be like this.Because this method workload is big, generally can only regularly carry out, if therefore some variations take place, just be not easy timely discovery in the situation of scale at ordinary times.So accurate measurement in the time of can not really guaranteeing the online daily use of weighing apparatus sometimes.Weighter for truck is such situation, and other large-scale weighing machine also is such situation.
The objective of the invention is: a kind of new device is provided, is used for weighing apparatus is carried out on-line automatic supervision and calibration.Concrete purposes is: one, learn weighing apparatus misalignment whether when metering.To guarantee accurate measurement.Two, weighing apparatus misalignment occurs or when breaking down, by pressing the several buttons on the device, detects, as can be known reason and concrete position.So that judgement is fast accurately saved trouble.Three, unload little standard test weight and (can calibrate with adding as 0～1kg).The effort so that the assay calibration work of weighing apparatus, particularly large-scale weighing machine is not behaved like this can be simple and convenient, is easy to carry out.As the commerce and trade scale, take miniweights just can carry out verification at any time.Thereby really guarantee the accurate measurement of weighing apparatus when daily use.
The object of the present invention is achieved like this: device has a reference cell, similar high-precision electronic balance.By loading the little standard test weight of 1kg, can carry out self-aligning, thereby it is accurately stable to remain reference cell self.And provide the reference signal of standard.A synthesis unit is arranged, the relevant signal with reference cell of the relevant parameter signal of weighing apparatus can be synthesized, the synthetic letter of output is led.A test cell is arranged, can test the composite signal that has synthesized behind the relevant parameter signal of weighing apparatus, and show with digital form.By observe showing, whether the metering that can learn weighing apparatus misalignment.A detecting unit is arranged, can be to forming three essential parts of weighing apparatus, i.e. load carrier (as table top), load transfer device (as sensor) and indicating device (as instrument) detect.With failure judgement and analytical performance.An alignment unit is arranged, can calibrate weighing apparatus.Specific as follows:
Reference cell is set, sets up modular system:
Reference cell is by high-precision sensor, instrument panel, and aligning key, supporting plate and standard test weight are formed.
One high-precision sensor is arranged, and range 1kg is load-sensing unit.Output mv electric signal when stressed.
A little standard test weight of 1kg is arranged.As scale load, to the sensor application of force.
One supporting plate is arranged, be fixed on the sensor.When being used for, bear counterweight to the sensor application of force.
One instrument panel is arranged, and the signal of stressed time output is measured to sensor, and shows numerical value with digital form.Instrument panel can be provided with, and when sensor is subjected to same power (as 1kg), shows that numerical value can be 10000, also can be 20000 or 30000.Specifically can set as required.Simultaneously, as long as the 1kg counterweight is put on the supporting plate the sensor application of force, click aligning key, instrument panel shows that numerical value always shows 10000 automatically, or 20000 or 30000, promptly set value.This just self calibrates.
An aligning key is arranged, press the button once, reference cell can carry out self-aligning automatically.
Like this, just form reference cell, set up modular system.When the 1kg standard test weight is put on the supporting plate, during to the sensor application of force, sensor will be exported a standard signal.Instrument panel is measured this signal, and shows respective value according to regulation is set.And but self calibrates.During actual the use, be used for 100 tons of weighter for truck, instrument panel just can be set be shown as 100.00 (t) as device.If be used for 200 ton overhead travelling crane scales, instrument panel just can be set be shown as 200.00 (t).Other and the like.
Synthesis unit is set, weighing apparatus sensor signal and reference cell sensor signal is synthetic, the output composite signal:
Synthesis unit is made up of signal synthesizer.
One signal synthesizer is arranged.Weighing apparatus is drawn own signal of sensor when maintenance self system is constant, flows to signal synthesizer.The high-precision sensor of reference cell also is on the one hand own output signal to be offered the instrument panel measurement, simultaneously output signal is flowed to signal synthesizer.Compositor flows to test cell and measures after two signals are synthesized.And also show respective value with digital form.
When the signal conveys of signal synthesizer after will synthesizing measured to test cell, with respective symbol.The concrete setting is: the weighing apparatus sensor signal big during with the reference cell sensor signal symbol for+, less than the time be-, be 0 when equal.
Because composite signal is made up of reference cell high-precision sensor signal and weighing apparatus sensor signal, the weighing apparatus sensor signal is produced by the weighing apparatus carrying, and reference cell high-precision sensor signal produces by carrying 1kg standard test weight, and measured and shown numerical value by the reference cell instrument panel, so it is a stable and accurate standard signal.So whether composite signal is accurately stable, just depended on the weighing apparatus sensor signal.Therefore by test, just can learn the situation of weighing apparatus sensor signal to composite signal.And the situation of cicada weighing apparatus sensor signal, just reflected whether weighing apparatus measures accurate from an aspect.Test and numerical value to composite signal show, are undertaken by test cell.
Test cell is set, composite signal is tested, and show numerical value with digital form:
Test cell is made up of test board.
One test board is arranged, the composite signal of signal synthesizer output is measured, and shown numerical value with digital form.Test board also can be provided with, and same signal value shows that numerical value can be 10000, also can be 20000 or 30000.Specifically can set as required.During actual the use, be used for 100 tons of weighter for truck, test board just can be set be shown as 100.00 (t) as device.If be used for 200 ton overhead travelling crane scales, test board just can be set be shown as 200.00 (t).Other also.
Because test board measurement and demonstration is composite signal, when weighing apparatus did not carry, output signal was 0.At this moment the 1kg standard test weight is put,, can be made the reference cell instrument panel be shown as 100.00 (t) by being provided with to the reference cell high-precision sensor application of force.(instrument panel is direct survey sensor signal).By being provided with, make the test board of test cell also can be shown as 100.00 (t).Though the test board test is composite signal, but because weighing apparatus does not carry, its sensor output signal is 0, so in the composite signal, therefore the output signal of having only the reference cell high-precision sensor, at this moment the demonstration of test cell test board and reference cell instrument panel is consistent.All be 100.00 (t).
So far, owing to be provided with reference cell, synthesis unit and test cell, and the reference cell instrument panel is responsible for measuring self high-precision sensor signal, and the test cell test board is responsible for measuring composite signal, has therefore just realized: when weighing apparatus does not carry, by placing the 1kg standard test weight, to the reference cell high-precision sensor application of force, it is consistent that reference cell instrument panel and test cell test board can show, as all being 100.00 (t).When weighing apparatus carrying weighing, it still is 100.00 (t) that the reference cell instrument panel shows.(whether because instrument panel is direct measuring basis cell sensor signal, not carried by weighing apparatus influences).But the test cell test board shows it is not 100.00 (t).Because in the composite signal, not the output signal of having only the reference cell high-precision sensor, also have the weighing apparatus signal of sensor.But after finishing when weighing apparatus carrying weighing, promptly weighing apparatus is unloaded again, and the demonstration of test cell test board at this moment should be again to get back to 100.00 (t).Otherwise illustrate that variation has taken place the weighing apparatus signal of sensor.And cause this variation or weighing apparatus sensor itself, or load-bearing table top deformation, or instrument is for bridge voltage or the like.And this variation will make weighing apparatus metering misalignment.So, carry after weighing finishes at every turn at weighing apparatus by observation test unit testing plate, show whether remain set value, whether the metering that can learn weighing apparatus misalignment.Also how many variable quantities has as can be known, is 100.00 (t) as setting, now becomes 100.05 (t), and that has changed 0.05 (t) exactly.Can judge successively whether the weighing apparatus error is overproof.
Detecting unit is set, to forming three essential parts of weighing apparatus, i.e. load carrier, (as table top), load transfer device (sensor) and indicating device (instrument) detect.With failure judgement and analytical performance.
Detecting unit is by switch, memory button, and compare button and reference cell are formed.
A switch 1 is arranged, by conversion, but the output signal of weighing apparatus instrument measuring basis unit high-precision sensor.Like this, when weighing apparatus had just been calibrated, by placing the 1kg standard test weight, to the reference cell high-precision sensor application of force, by switch 1, the weighing apparatus instrument was measured the signal of this reference cell high-precision sensor, and the weighing apparatus instrument has an indicating value.This indicating value is memorized, can carry out such measurement repeatedly later on, do not have change, illustrate that the weighing apparatus instrument is normal if measure indicating value at every turn.Otherwise, just problem has been arranged.This has just realized the Performance Detection to the weighing apparatus instrument.
A switch 2 is arranged, and by conversion, the reference cell instrument panel can be measured the weighing apparatus signal of sensor.Like this, when weighing apparatus had just been calibrated, by placing the 1kg standard test weight to the reference cell high-precision sensor application of force, the reference cell instrument panel was at first measured this self sensor, and can show the numerical value that has set, as 100.00 (t).By switch 2, the reference cell instrument panel can remove to measure the signal of weighing apparatus sensor then.At this moment allow weighing apparatus carry, (arbitrary weight all can, if can driving an automobile, weighter for truck gets on, if a day cart balance can lift by crane an object), the weighing apparatus sensor can produce signal output, and the weighing apparatus instrument has a corresponding indicating value, as 50.00 (t), the reference cell instrument panel also has an indicating value, as 25.00 (t).From these two indicating values more as can be known the ratio of weighing apparatus instrument and the indicating value of reference cell instrument panel be 2: 1.The ratio of this indicating value is memorized.Can carry out such measurement repeatedly later on, not have change, illustrate that weighing apparatus sensor (comprising load carrier, as table top) is normal if measure the ratio of indicating value at every turn.(because the weighing apparatus sensor is stressed by load carrier, therefore normal words illustrate that sensor and load carrier are all normal).Otherwise, just problem has been arranged.This has just realized the weighing apparatus sensor Performance Detection of (comprising load carrier).
When undesired, when problem is arranged, distinguish the sensor problem or the problem of load carrier.This can judge in the indicating value that weighing apparatus carries after weighing finishes at every turn by observation test unit testing plate.If indicating value is this value specifically, that time is that value, and another time is another value again, and that is exactly the problem of load carrier.Because mostly this is load carrier generation deformation, make that the sensor stress is inconsistent to be caused.If indicating value is constant, that is the problem of sensor, and variation has taken place parameter.Because at this moment the influence of load carrier is a constant.
A memory button is arranged,, during the output signal of weighing apparatus instrument measurement reference cell high-precision sensor, click memory button, can measured value be stored in the reference cell instrument panel internal memory automatically when by switch 1.When by switch 2, when the reference cell instrument panel goes to measure the signal of weighing apparatus sensor and above-mentioned relevant operation, click memory button, can measured value be stored in the reference cell instrument panel internal memory automatically again, and the ratio of indicating value down of memory simultaneously.
A compare button is arranged, when passing through switch 1, during the output signal of weighing apparatus instrument measurement reference cell high-precision sensor, click compare button, the reference cell instrument panel can show previous stored measured value, relatively judges when passing through switch 2 to provide, when the reference cell instrument panel goes to measure the signal of weighing apparatus sensor and above-mentioned relevant operation, click compare button, instrument panel can show the previous stored measured value and the ratio of indicating value, judges to provide relatively.
Therefore by detecting unit, just realized forming three essential parts of weighing apparatus: load carrier (as table top), load transfer device (sensor) and indicating device (instrument) detect.With failure judgement and analytical performance.
Alignment unit is set, weighing apparatus is calibrated.
Alignment unit is by the standard test weight group, switch 3, and reference cell, synthesis unit, test cell and detecting unit are formed.
The second-class standard test weight of one cover is arranged.Be used for the reference cell high-precision sensor application of force.
A switch 3 is arranged, and by conversion, the weighing apparatus instrument can be measured the composite signal of synthesis unit.
The calibration of weighing apparatus is achieved in that the 1kg counterweight is put on the supporting plate the reference cell high-precision sensor application of force, clicks aligning key, make reference cell carry out self-aligning.By switch 3, make the composite signal of weighing apparatus instrument measurement synthesis unit.The weighing apparatus zero load, respectively with 0.1kg, 0.2kg, 0.3kg.... is put on the supporting plate successively until the 1kg counterweight, and to the reference cell high-precision sensor application of force, at this moment the reference cell instrument panel has corresponding indicating value (as 100.00t).The weighing apparatus instrument is set, makes its indicating value consistent with instrument panel.The test cell test board is set, makes its indicating value also consistent with instrument panel.So far, three indicating values are identical, and the weighing apparatus calibrating indicating instrument finishes.Take down counterweight and make the zero load of reference cell high-precision sensor.On weighing apparatus, execute and carry, dead weight capacity can be the per mille to ten thousand of weighing apparatus maximum range/.Can put the standard test weight of a 20kg as the weighing apparatus of 100 (t).At this moment weighing apparatus instrument and test cell test board have corresponding indicating value, but not necessarily 20kg, 0.01 (t) in this way.Take down the 20kg standard test weight, execute one and load greatly on weighing apparatus, (big load can be fixed according to actual conditions, adopts to make things convenient for way.Can drive an automobile as weighter for truck and get on, day cart balance weight of can slinging), peeling then, making weighing apparatus instrument and test cell test board indicating value all is 0.00 (t) state.Standard test weight with 20kg is put on the weighing apparatus again, and at this moment the indicating value of weighing apparatus instrument and test cell test board may still be 0.01 (t), also may not be 0.01 (t).If 0.01 (t) illustrates that the weighing apparatus linearity is passable, just the indicating value of weighing apparatus instrument will be adjusted into 0.02 (t), and fairly simple like this adjusts the weighing apparatus instrument indication value once, and the calibration of weighing apparatus has just been finished.Explanation thus simultaneously, the weighing apparatus instrument is calibrated the indicating value that is provided with when the stressed 1kg of reference cell high-precision sensor, with the indicating value that the weighing apparatus actual loading is measured, be different, needs to adjust.But the also corresponding relation when of two indicating values as can be known.Promptly the weighing apparatus instrument is calibrated the indicating value that is provided with when the stressed 0.5kg of reference cell high-precision sensor as can be known, just can be consistent with the indicating value that the weighing apparatus actual loading is measured.Just the stressed 0.5kg of reference cell high-precision sensor is equivalent to stressed 100.00 (t) of weighing apparatus.Therefore can check affirmation after the calibration, let alone a load on the weighing apparatus, the weighing apparatus instrument has an indicating value, as 50.00 (t), puts the 0.25kg counterweight on the reference cell high-precision sensor, and the weighing apparatus instrument indication value should be 0.(because the weighing apparatus instrument measurement is composite signal at this moment).Other situation and the like, can check several times more.If when successively weighing apparatus being put the 20kg counterweight, twice indicating value difference of weighing apparatus instrument not all is 0.01 (t), illustrate that the weighing apparatus linearity will adjust.Adjustment is undertaken by the weighing apparatus instrument being carried out 2 settings.The little situation of indicating value placed little standard test weight when the 20kg counterweight was put in selection, made indicating value identical.Recover peeling then, determine the weighing apparatus range which point, difference is what, which point the range of corresponding reference cell high-precision sensor is, how many differences is, with definite adjusting point and correction.Like this weighing apparatus instrument is carried out 2 settings, 0.1kg is selected in the weighing apparatus zero load, or the 0.2kg counterweight is put on the supporting plate, to the reference cell high-precision sensor application of force, the weighing apparatus instrument indication value is carried out first setting.On relevant adjusting point, corresponding counterweight (containing correction) is put on the supporting plate then,, the weighing apparatus instrument indication value is carried out second setting the reference cell high-precision sensor application of force.Setting completed, and relevant step above repeating can realize the calibration of weighing apparatus.
A working power is arranged, for each several part provides operating voltage.
A base plate is arranged, and each device component all is fixedly mounted on this above base plate.
A socket 1 is arranged, and the weighing apparatus instrument is connected with this device by in cable and the plug insertion socket.
A socket 2 is arranged, and the weighing apparatus sensor is connected with device by in cable and the plug insertion socket.
Owing to implement such scheme, can solve the several difficult points that exist in the present weighing apparatus use.Can monitor automatically that weighing apparatus is in when metering misalignment whether; If misalignment or break down, can be to the load carrier of weighing apparatus, sensor and instrument are carried out Performance Detection, analyze and judge; And can calibrate weighing apparatus easily.It can make weighing apparatus use convenient and accurate measurement.
Accompanying drawing and explanation: (accompanying drawing is seen below).On-line automatic supervision of weighing apparatus and calibration equipment be mainly by high-precision sensor, instrument panel, aligning key, supporting plate, standard test weight, signal synthesizer, test board, switch, memory button, compare button, working power, compositions such as base plate and socket.
Fig. 1 is a front view.Fig. 2 is right TV structure figure.Fig. 3 is plan structure figure.
(1) high-precision sensor among the figure is fixedly mounted on (13) desk-top box bottom.Be load-sensing unit.By cable and (12) working power, (7) switch 1 is connected with (2) instrument panel.
(2) instrument panel among the figure is fixedly mounted on (13) base plate.By cable and (12) working power, (1) sensor (8) switch 2, (3) aligning key, (10) memory button is connected with (11) compare button.
(3) aligning key among the figure is installed on (13) base plate front panel.Be connected with (2) instrument panel by cable.
(4) supporting plate among the figure is installed on (1) sensor.The standard test weight that carries is executed in carrying to (1) sensor.
(5) signal synthesizer among the figure is fixedly mounted on (13) base plate.By cable and (12) working power, (7) switch 1, (8) switch 2, (6) test board connects.
(6) test board among the figure is fixedly mounted on (13) base plate.By cable and (12) working power, (5) signal synthesizer connects.
(7) switch 1 among the figure is installed on (13) base plate front panel.By cable and (1) sensor, (5) signal synthesizer is connected with (8) switch 2 with (14) socket 1.
(8) switch 2 among the figure is installed on (13) base plate front panel.By cable and (2) instrument panel, (5) signal synthesizer is connected with (15) socket 2.
(9) switch 3 among the figure is installed on (13) base plate front panel.By cable and (5) signal synthesizer, (14) socket 1 connects.
(10) memory button among the figure is installed on (13) base plate front panel.Be connected with (2) instrument panel by cable.
(11) compare button among the figure is installed on (13) base plate front panel.Be connected with (2) instrument panel by cable.
(12) working power among the figure is fixedly mounted on (13) base plate.By cable and (2) instrument panel, (5) signal synthesizer is connected with (6) test board.
(13) base plate among the figure, each device component all is fixedly mounted on this above base plate.
(14) socket 1 among the figure is installed on (13) base plate rear panel.By cable and (7) switch 1, (8) switch 2 is connected with (9) switch 3.
(15) socket 2 among the figure is installed on (13) base plate rear panel.By cable and (7) switch 1, (8) switch 2 is connected with (5) signal synthesizer.
(16) working power switch among the figure.
Weighing apparatus monitors automatically and the calibration equipment feature is: one can be measured whether misalignment monitors automatically to weighing apparatus; Can be to the load carrier of weighing apparatus, sensor and instrument are carried out Performance Detection; The device that can calibrate weighing apparatus is by high-precision sensor, instrument panel, aligning key, supporting plate, standard test weight, signal synthesizer, test board, switch, memory button, compare button, working power, compositions such as base plate and socket.
Claims (1)
1. a device is characterized in that by high-precision sensor, instrument panel, aligning key, supporting plate, standard test weight, signal synthesizer, test board, switch, memory button, compare button, working power, compositions such as base plate and socket; High-precision sensor is installed on the base plate, by cable and working power, switch 1 is connected with instrument panel, instrument panel is installed on the base plate, by cable and working power, sensor, switch 2, aligning key, memory button is connected with compare button, and aligning key is installed on the base plate front panel, is connected with instrument panel by cable, supporting plate is installed on the sensor, signal synthesizer is installed on the base plate, by cable and working power, and switch 1, switch 2, test board connects, and test board is installed on the base plate, by cable and working power, signal synthesizer connects, switch 1 is installed on the base plate front panel, by cable and sensor, signal synthesizer, socket 1 is connected with switch 2, switch 2 is installed on the base plate front panel, and by cable and instrument panel, signal synthesizer is connected with socket 2, switch 3 is installed on the base plate front panel, by cable and signal synthesizer, socket 1 connects, and memory button is installed on the base plate front panel, be connected with instrument panel by cable, compare button is installed on the base plate front panel, is connected with instrument panel by cable, and working power is installed on the base plate, by cable and instrument panel, signal synthesizer is connected with test board, and base plate is assembled each device component, and socket 1 is installed on the base plate rear panel, by cable and switch 1, switch 2 is connected with switch 3, and socket 2 is installed on the base plate rear panel, by cable and switch 1, switch 2 is connected with signal synthesizer; It can measure whether misalignment monitors automatically to weighing apparatus, can be to the load carrier of weighing apparatus, and sensor and instrument are carried out Performance Detection, can calibrate weighing apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01136563 CN1238699C (en) | 2001-10-18 | 2001-10-18 | On-line automatic monitoring and check equipment for weighing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01136563 CN1238699C (en) | 2001-10-18 | 2001-10-18 | On-line automatic monitoring and check equipment for weighing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1412532A true CN1412532A (en) | 2003-04-23 |
| CN1238699C CN1238699C (en) | 2006-01-25 |
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ID=4673740
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01136563 Expired - Fee Related CN1238699C (en) | 2001-10-18 | 2001-10-18 | On-line automatic monitoring and check equipment for weighing equipment |
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| Country | Link |
|---|---|
| CN (1) | CN1238699C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008582B (en) * | 2006-01-27 | 2011-04-20 | 陈纪铭 | Online material calibration apparatus for belt scales |
| CN113310561A (en) * | 2021-05-27 | 2021-08-27 | 杭州仙琚科技创新有限公司 | High-precision electronic balance calibration method |
-
2001
- 2001-10-18 CN CN 01136563 patent/CN1238699C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008582B (en) * | 2006-01-27 | 2011-04-20 | 陈纪铭 | Online material calibration apparatus for belt scales |
| CN113310561A (en) * | 2021-05-27 | 2021-08-27 | 杭州仙琚科技创新有限公司 | High-precision electronic balance calibration method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1238699C (en) | 2006-01-25 |
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Granted publication date: 20060125 Termination date: 20111018 |