CN101526392A - On-line monitoring device and method of weighting sensors - Google Patents
On-line monitoring device and method of weighting sensors Download PDFInfo
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- CN101526392A CN101526392A CN200910026386A CN200910026386A CN101526392A CN 101526392 A CN101526392 A CN 101526392A CN 200910026386 A CN200910026386 A CN 200910026386A CN 200910026386 A CN200910026386 A CN 200910026386A CN 101526392 A CN101526392 A CN 101526392A
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Abstract
The invention relates to an on-line monitoring device and method of weighting sensors, which are suitable for the on-line monitoring of troubles of the weighting sensors in a weighing system. The on-line monitoring device comprises a sensor unbalance loading regulator, a signal switcher, a warning indicator and a power supply circuit, wherein the sensor unbalance loading regulator is connected with the weighting sensors; the signal switcher is connected with the sensor unbalance loading regulator, a signal detector and a weighing meter; and the warning indictor is connected with the signal detector. The on-line monitoring method is as follows: when the weighing system is weighed, the signal detector controls the signal switcher to switch signals, collects a signal value of each weighting sensor one by one and judges the troubles of the weighting sensors by contrastively analyzing weighing signal values. The invention solves the problem that the troubles of the weighting sensors can not be discovered in time because weighing signals are connected together in parallel and then sent to the weighing meter, thereby enhancing the reliability and the measuring precision of the weighing system. The invention has the advantages of compact and reasonable structure, simple and convenient operation, high reliability, easy maintenance and long service life.
Description
Technical field
The present invention relates to a kind of LOAD CELLS on-Line Monitor Device and method thereof, be particularly useful for the on-line monitoring of LOAD CELLS fault in the weighing system.
Background technology
In the at present common weighing system of forming by a plurality of LOAD CELLS, the weighing-up wave of sensor through the unbalance loading adjustment after, signal is connected in parallel and delivers to weighing instrument.If internal system has one or several LOAD CELLS to damage in the weighing process, and because the weighing-up wave of sensor output is connected in parallel, just can not accurately analyze is that fault has appearred in which or which sensor, causes the special trouble of maintenance; In addition, if fault sensor in time do not found, will cause metering inaccurate, thereby produce economic loss.
Summary of the invention
The objective of the invention is to overcome the weak point in the prior art, provide a kind of metering accurate, easy care is guaranteed the LOAD CELLS on-Line Monitor Device and the method thereof of weighing system reliability service
For achieving the above object, on-Line Monitor Device of the present invention: comprise sensor unbalance loading adjuster, weighing instrument, signal shifter, signal detector, warning indicator, power circuit, wherein signal shifter links to each other with weighing instrument with sensor unbalance loading adjuster, signal detector simultaneously; Warning indicator links to each other with signal detector.
Described signal shifter is made up of some electronic switches; Described signal detector is made up of amplifier, A/D converter and CPU processor; Described warning indicator is made up of pilot lamp; Described sensor unbalance loading adjuster is made up of variohm.
On-line monitoring method of the present invention: employing is noted the current signal value of each LOAD CELLS with signal detector after adjusting weighing system by usual way; Signal detector is gathered the signal value of each LOAD CELLS respectively according to the time interval switching signal of setting in the operational process.When weighing system when being unloaded, can by with the original signal detecting device in the load cell signal value that writes down be analyzed, judge the fault LOAD CELLS; When on the weighing system load being arranged, signal detector is divided into one group to per two symmetrical LOAD CELLS with LOAD CELLS according to the structural shape of scale, compared then, when the signal difference of LOAD CELLS is in setting range on the same group, judged that this group LOAD CELLS is normal; If where organize the signal value of LOAD CELLS differ when exceeding setting range, judge that this group wherein has a LOAD CELLS to have fault; Next signal difference is exceeded the one group of load cell signal value comparison at setting range of one group of load cell signal value of setting range and signal difference, analysis and distinguishing has the fault LOAD CELLS in that group LOAD CELLS that exceeds setting range; Pilot lamp in the warning indicator carries out alarm simultaneously; Can also make further processing according to this alerting signal weighing system.
Beneficial effect: the present invention adopts link to each other with weighing instrument weighing-up wave to LOAD CELLS output of the pick-up unit comprise signal shifter and signal detector to carry out timing sample respectively comparison, judgement, and the LOAD CELLS fault-signal is reported to the police.Owing to adopt the weighing-up wave sampling respectively one by one of signal shifter and signal detector with several LOAD CELLS outputs, can have by the program compare of analysis is that fault has appearred in which LOAD CELLS on earth, and in time send alerting signal, for next step maintenance in time provides accurate information.Avoided breaking down and not by the loss of in time finding to cause owing to LOAD CELLS, solved in the work of weighing because sensor takes place unusual, cause metering inaccurate, simultaneously be not easy to find to measure an inaccurate difficult problem again, improve the reliability and the metering precision of weighing system, be applicable to the on-line precise and reliable Weighing of weighing system.Its compact conformation is reasonable, the reliability height, and easy care, long service life has practicality widely.
Description of drawings
Fig. 1 is a control device example schematic of the present invention;
In the accompanying drawing: 1-sensor unbalance loading adjuster, 2-signal shifter, 3-signal detector, 4-warning indicator
Embodiment
The invention will be further described below in conjunction with the embodiment in the accompanying drawing:
LOAD CELLS on-Line Monitor Device shown in Figure 1, be made up of the sensor unbalance loading adjuster 1 that connects LOAD CELLS, the signal shifter 2 that connects sensor unbalance loading adjuster 1 and signal detector 3 and weighing instrument, warning indicator 4, the power circuit that is connected signal detector 3, software section comprises the program that microcontroller moves.Each road adjustment circuit in the sensor unbalance loading adjuster 1 is made up of 1 variohm, by regulating variohm, makes the signal basically identical of each road LOAD CELLS output.In the weighing system of being made up of 4 or 6 tunnel LOAD CELLS, signal shifter 2 is made up of 8 or 12 reed relays, two on every road.The reed relay switch speed is fast, can reach the 1ms switch once, has effectively improved the speed that signal switches, thereby has reduced to detect the used time, has reduced the influence to detected circuit simultaneously.Signal shifter 2 cooperates signal detector 3 to finish the relevant detection function by CPU control.Warning indicator 4 is made up of 4 or 6 pilot lamp of digital drive chip and corresponding 4 or 6 tunnel LOAD CELLS, is used to refer to each road LOAD CELLS and breaks down.Signal detector 3 is made up of high-precision meter amplifier (LTC1100) and the microcontroller (C8051F350) that has a high-precision A/D converter.The weighing-up wave of LOAD CELLS is through instrument amplifier, delivers to A/D converter after being exaggerated 100 times, becomes digital quantity through gathering, and handles by CPU software, after judging, carries out control corresponding.Power circuit is made of the voltage stabilizing chip, and power supply is taken from the pumping signal that instrument is supplied with sensor, and not needing additionally provides power supply, has made things convenient for field wiring.
Online test method of the present invention: after employing is adjusted weighing-appliance by usual way, switch one by one by the weighing-up wave of signal shifter 24 or 6 LOAD CELLS outputs, and sample respectively by signal detector 3, synchronous signal detecting device 3 is noted the current signal value of each LOAD CELLS.Signal detector 3 is according to the time interval of programmed settings in the weighing process, control signal switch 2 switches the weighing-up wave of LOAD CELLS output one by one, deliver to A/D converter after the signal amplifier of weighing-up wave process self inside of signal detector 3 collection LOAD CELLS amplifies about 100 times and become digital quantity, handle by CPU software.When weighing system when being unloaded, can by with original signal detecting device 3 in the load cell signal value of record compare, judge the fault LOAD CELLS.When on the weighing system load being arranged, signal detector 3 is divided into one group to per two symmetrical LOAD CELLS with the signal of LOAD CELLS according to the structural shape of scale, compared then, when the signal difference of LOAD CELLS is in setting range on the same group, judged that this group LOAD CELLS is normal; If where organize the signal value of LOAD CELLS differ when exceeding setting range, judge that this group wherein has a LOAD CELLS to have fault.Next signal difference is exceeded the one group of load cell signal value and one group of load cell signal value comparison of signal difference in setting range of setting range, analysis and distinguishing has the fault LOAD CELLS in that group LOAD CELLS that exceeds setting range; Corresponding pilot lamp carries out alarm in the warning indicator 4 simultaneously; For next step maintenance in time provides accurate information.
Claims (3)
1, a kind of LOAD CELLS on-Line Monitor Device, comprise sensor unbalance loading adjuster (1), it is characterized in that: also comprise signal shifter (2), signal detector (3), warning indicator (4) and power circuit, wherein signal shifter (2) links to each other with weighing instrument with sensor unbalance loading adjuster (1), signal detector (3) simultaneously; Warning indicator (4) links to each other with signal detector (3).
2, according to claim 1 LOAD CELLS on-Line Monitor Device, it is characterized in that: described signal detector (3) is made up of amplifier, A/D converter and CPU microprocessor.
3, a kind of LOAD CELLS on-line monitoring method of device according to claim 1 is characterized in that:
At first use signal detector (3) to note the signal value of each LOAD CELLS when unloaded before the weighing system operation;
Signal detector in the operational process (3) is according to the time interval of programmed settings, and control signal switch (2) switching signal is gathered the signal value of each LOAD CELLS one by one;
When weighing system is zero load, compare by load cell signal value with the middle record of original signal detecting device (3), judge the fault LOAD CELLS, and carry out alarm by the pilot lamp of warning indicator (4);
When on the weighing system load being arranged, by signal detector (3) programmed control two symmetrical LOAD CELLS are divided into one group, compared, judged the fault LOAD CELLS in the grouping LOAD CELLS, and carried out alarm by the pilot lamp of warning indicator (4).
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| CN200910026386A CN101526392A (en) | 2009-04-22 | 2009-04-22 | On-line monitoring device and method of weighting sensors |
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| CN200910026386A CN101526392A (en) | 2009-04-22 | 2009-04-22 | On-line monitoring device and method of weighting sensors |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343921A (en) * | 2011-06-21 | 2012-02-08 | 北京康拓红外技术股份有限公司 | On-line monitoring device for performances of wheel sensor and on-line monitoring method thereof |
| WO2012051937A1 (en) * | 2010-10-21 | 2012-04-26 | 北京东方瑞威科技发展有限公司 | Embedded railroad track scale weighing system capable of weighing unbalanced load |
| 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 |
| CN103323091A (en) * | 2013-05-31 | 2013-09-25 | 赛摩电气股份有限公司 | Method for identifying faults of analog quantity resistance strain sheet type weighing sensor |
| CN103592015A (en) * | 2013-11-18 | 2014-02-19 | 重庆大唐测控技术有限公司 | Remote fault detecting and locating device of analog weighing sensor of motor truck scale |
| CN105424157A (en) * | 2015-11-20 | 2016-03-23 | 苏州易瑞得电子科技有限公司 | Weighing apparatus screening method and weighing apparatus screening system based on mold weight |
| CN105509862A (en) * | 2015-11-30 | 2016-04-20 | 南京和利达智能科技有限公司 | Real-time detection method and device for road automobile weighing equipment |
| CN105588631A (en) * | 2014-10-22 | 2016-05-18 | 中联重科股份有限公司 | Fault detection device, method, and system for weigher and engineering machinery |
| CN107052293A (en) * | 2017-03-13 | 2017-08-18 | 山东钢铁股份有限公司 | The fault detection method and system of a kind of big bag weighing sensor of conticaster |
| CN110926584A (en) * | 2019-12-31 | 2020-03-27 | 山东山大新元易通信息科技有限公司 | Multi-sensor electronic scale landing detection system and method |
| CN111198033A (en) * | 2018-11-19 | 2020-05-26 | 宁波方太厨具有限公司 | Method for detecting quality of weighing sensor mounted on household appliance |
| CN111928933A (en) * | 2020-06-22 | 2020-11-13 | 赛摩智能科技集团股份有限公司 | Combined weighing device and weighing method |
| CN111928931A (en) * | 2020-06-22 | 2020-11-13 | 赛摩智能科技集团股份有限公司 | Container weighing system and loading weighing monitoring method |
| CN113063481A (en) * | 2021-03-25 | 2021-07-02 | 梅特勒-托利多(常州)精密仪器有限公司 | Life prediction method for aerial work platform weighing sensor |
| CN113218198A (en) * | 2021-04-29 | 2021-08-06 | 苏州工业园区苏容电气有限公司 | Dynamic monitoring system and method for material level of top bin of submerged arc furnace |
| CN114518153A (en) * | 2022-02-18 | 2022-05-20 | 福建金闽再造烟叶发展有限公司 | Error-preventing system, weighing device and tobacco production equipment |
-
2009
- 2009-04-22 CN CN200910026386A patent/CN101526392A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012051937A1 (en) * | 2010-10-21 | 2012-04-26 | 北京东方瑞威科技发展有限公司 | Embedded railroad track scale weighing system capable of weighing unbalanced load |
| CN102343921A (en) * | 2011-06-21 | 2012-02-08 | 北京康拓红外技术股份有限公司 | On-line monitoring device for performances of wheel sensor and on-line monitoring method thereof |
| CN102343921B (en) * | 2011-06-21 | 2013-07-24 | 北京康拓红外技术股份有限公司 | On-line monitoring device for performances of wheel sensor and on-line monitoring method thereof |
| 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 |
| CN103323091A (en) * | 2013-05-31 | 2013-09-25 | 赛摩电气股份有限公司 | Method for identifying faults of analog quantity resistance strain sheet type weighing sensor |
| CN103592015A (en) * | 2013-11-18 | 2014-02-19 | 重庆大唐测控技术有限公司 | Remote fault detecting and locating device of analog weighing sensor of motor truck scale |
| CN105588631A (en) * | 2014-10-22 | 2016-05-18 | 中联重科股份有限公司 | Fault detection device, method, and system for weigher and engineering machinery |
| CN105588631B (en) * | 2014-10-22 | 2018-07-24 | 中联重科股份有限公司 | Weigher fault test set, method, system and engineering machinery |
| CN105424157A (en) * | 2015-11-20 | 2016-03-23 | 苏州易瑞得电子科技有限公司 | Weighing apparatus screening method and weighing apparatus screening system based on mold weight |
| CN105509862A (en) * | 2015-11-30 | 2016-04-20 | 南京和利达智能科技有限公司 | Real-time detection method and device for road automobile weighing equipment |
| CN107052293A (en) * | 2017-03-13 | 2017-08-18 | 山东钢铁股份有限公司 | The fault detection method and system of a kind of big bag weighing sensor of conticaster |
| CN111198033A (en) * | 2018-11-19 | 2020-05-26 | 宁波方太厨具有限公司 | Method for detecting quality of weighing sensor mounted on household appliance |
| CN110926584A (en) * | 2019-12-31 | 2020-03-27 | 山东山大新元易通信息科技有限公司 | Multi-sensor electronic scale landing detection system and method |
| CN111928933A (en) * | 2020-06-22 | 2020-11-13 | 赛摩智能科技集团股份有限公司 | Combined weighing device and weighing method |
| CN111928931A (en) * | 2020-06-22 | 2020-11-13 | 赛摩智能科技集团股份有限公司 | Container weighing system and loading weighing monitoring method |
| CN111928931B (en) * | 2020-06-22 | 2022-03-08 | 赛摩智能科技集团股份有限公司 | Container weighing system and loading weighing monitoring method |
| CN113063481A (en) * | 2021-03-25 | 2021-07-02 | 梅特勒-托利多(常州)精密仪器有限公司 | Life prediction method for aerial work platform weighing sensor |
| CN113218198A (en) * | 2021-04-29 | 2021-08-06 | 苏州工业园区苏容电气有限公司 | Dynamic monitoring system and method for material level of top bin of submerged arc furnace |
| CN114518153A (en) * | 2022-02-18 | 2022-05-20 | 福建金闽再造烟叶发展有限公司 | Error-preventing system, weighing device and tobacco production equipment |
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Open date: 20090909 |