CN201289399Y - Data transmission system for electronic weighting - Google Patents
Data transmission system for electronic weighting Download PDFInfo
- Publication number
- CN201289399Y CN201289399Y CNU2008201358521U CN200820135852U CN201289399Y CN 201289399 Y CN201289399 Y CN 201289399Y CN U2008201358521 U CNU2008201358521 U CN U2008201358521U CN 200820135852 U CN200820135852 U CN 200820135852U CN 201289399 Y CN201289399 Y CN 201289399Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- data
- weighing
- input
- electronic
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an electronic weighing data transmission system, which comprises an electronic weighing device with a weighing sensor arranged on a weighing body; the electronic weighing device also comprises a signal acquisition circuit, an analog-digital conversion circuit, a data processing circuit, a data storage circuit, a data input circuit and a data output circuit; wherein a signal conversion channel is arranged in the signal acquisition circuit; the amount of the signal conversion channel is corresponding to that of the weighing sensor; the input terminal of a signal acquisition channel is corresponding to the weighing sensor one by one, and the output terminal thereof is correspondingly connected with the input terminal of an analog-digital conversion channel; the output terminal of the analog-digital conversion circuit is correspondingly connected with the input terminal of the data processing circuit through a serial interface; the output terminal of the data processing circuit is connected with the data output circuit; and the data input circuit and the data storage circuit are connected with the data processing circuit respectively. The utility model achieves the data processing effect which is conveniently operated and measured and is more accurate due to the characteristics of multiple channels in parallel and simultaneous sampling, and the like.
Description
Technical field
The utility model relates to a kind of data transmission system, is a kind of electronic-weighing data transmission system that material is weighed and the data that obtain are handled of being used for specifically.
Background technology
Nowadays, the electronic-weighing metering outfit that is widely used in industrial processes generally is to have one to four LOAD CELLS, the voltage signal output line of all LOAD CELLS is received in the terminal box jointly, be provided with simple parallel circuit in the terminal box, make each road voltage signal of input carry out arithmetic mean through described simple parallel circuit, form a voltage signal that gathers, this voltage signal is transferred to weighing instrument by terminal box by connecting lead, it is become can represent the data of weighing and show.Shown in Figure 1 is exactly the above-mentioned electronic-weighing data acquisition system (DAS) that nowadays is widely used in commercial production, this data acquisition system (DAS) is simple in structure, can satisfy general weighing system requirement, but still exist some shortcomings, as cause the inclination of weighting platform because of gravity unbalance, thereby make the output voltage between sensor and LOAD CELLS have bigger difference, because the voltage signal of each LOAD CELLS just carries out simple parallel connection in terminal box, make the voltage that gathers by terminal box may and the numerical value of reality between occur than mistake, the result will cause us to have problem than big-difference from the resulting weighing numerical value of weighing instrument and actual numerical value.
Application number is that 200420077815.1 Chinese utility model patent " electronic-weighing data transmission system " discloses a kind of electronic-weighing data transmission system.By at first the voltage signal of analog quantity being changed the voltage signal of each LOAD CELLS output into digital signal through the conversion of corresponding conversion of signals passage with it, the output terminal of each ALT-CH alternate channel is connected with the corresponding with it data input pin of data processing module respectively then, send the digital signal after the conversion to data processing module, data processing module carries out calculation process according to the calculation procedure of ordering in advance to the digital signal of each road input, and the data after will handling are again delivered to the signal transmitting port and exported.This kind data transmission system is compared with data transmission system shown in Figure 1 further raising aspect the measuring accuracy, but still exists some shortcomings, and following several respects are specifically arranged:
One, data input circuit that is not connected in the data transmission system or the data-interface that communicates with data processing module with data processing module.As everyone knows, in the middle of the industrial processes of our reality because various uncertain factors, the existence of the physical factor of replacing after damaging as the creep of sensor, drift and sensor or the like, make us want irregular electronic measuring scale is carried out calibration operation, will calibrate once general every half a year at least.If this system applies can reportedly data input circuit that is not connected with data processing module or the data-interface that communicates with data processing module in the communication system by factor behind electronic measuring scale, be not easy to operating personnel the data processing module is carried out parameter setting and parameter modification operation, be not easy to the operation that operating personnel calibrate system.
Be exactly not emphasize in the system that data processing module does further requirement to the signal Processing sequential of each passage two.If each channel signal sampling time difference then can produce phase error, the weight of material value of the reality the when output after then data processing module is handled then is not sampling, so the microchronometer volume production is given birth to deviation, cause metering system microchronometer amount weak effect, the dynamic response that is data transmission system is poor, follows the tracks of, reappears the ability of fast speed input signal.
Three, be exactly the data storage circuitry that is not used in the storage calibration parameter in the system.The processing procedure of data is that data processing module carries out calculation process according to the calculation procedure of ordering in advance to the digital signal of each road input, and the data after will handling are again delivered to the signal transmitting port and exported.If extraneous factor changes, make sensor generation creep, and the generation of phenomenon such as sensor damage, then the parameter of system simulation part will change, this moment, we should carry out calibration operation to system, otherwise the data message of system's output will produce deviation with actual numerical value, if we carry out calibration operation to system, then can only be that pre-set calculation procedure is revised, if that will improve the requirement to operating personnel's technical merit greatly like this.
Being exactly that the numerical information of each road signal after analog to digital conversion of LOAD CELLS input in the system is parallel four, is input to data processing module, causes the input circuit more complicated of data processing module, and a large amount of interfaces is occupied.
So how can provide a kind of be convenient to the operation, measuring accuracy again more accurately data processing method be electronic-weighing industry problem demanding prompt solution.
Summary of the invention
The purpose of this utility model is at above-mentioned defective of the prior art, provides a kind of easy to operate, the accurate more again data processing method of measuring accuracy.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of electronic-weighing data transmission system, it comprises the electronic-weighing equipment that is arranged on the scale body and has LOAD CELLS, it is characterized in that: it also comprises signal processing circuit, analog to digital conversion circuit, data processing circuit, data storage circuitry and data input and data output circuit; Be provided with signal sampling channel in the described signal processing circuit, this signal sampling channel that quantity is set is corresponding with the quantity of described LOAD CELLS, and the input end of this signal sampling channel and the output terminal of described LOAD CELLS connect one to one, be provided with conversion of signals passage and serial line interface control circuit in the analog to digital conversion circuit, ALT-CH alternate channel be provided with signal sampling channel in quantity and the described signal processing circuit that quantity is set is corresponding, and each input end of this conversion of signals passage and the output terminal of described signal sampling channel connect one to one, the output terminal of each conversion of signals passage is connected with the corresponding with it input end of serial line interface control circuit, the serial line interface control circuit is by signal input part corresponding be connected of a serial line interface with micro-processor interface circuit, data storage circuitry has the calibration parameter that weight signal is converted to the actual weight value, data storage circuitry and data input, output circuit connects micro-processor interface circuit respectively.
When material is weighed, each road LOAD CELLS is imported analog to digital conversion circuit through after the collection of signal sampling channel respectively with voltage signal, analog to digital conversion circuit regularly carries out data acquisition to each analog input end simultaneously according to the requirement of data processing circuit, subsequently the gained data are carried out analog to digital conversion, digital data after the conversion is transferred to data processing circuit through output terminal, data processing circuit carries out computing and processing and then obtains actual gravimetric value digitized weight data according to the calibration parameter of predefined calculation procedure and coupling system stored, and the data after will handling are subsequently exported data by output circuit.
The adding of data input circuit makes operating personnel to finish operations necessary to the data disposal system easily, as the data treatment circuit is carried out data communication, the adjusting setting of parameter, the calibration operation of system, and the presence of each ALT-CH alternate channel carried out query manipulation or the like, data output circuit is provided with 4-20 milliampere analog quantity electric current output interface and is used for serial data output RS232 interface, be used to realize long-range data transmission and realize Long-distance Control, be provided with data display circuit in the data output circuit, be used for changing the data after handling into numerical information that we can discern.
Be respectively equipped with logic control input interface and logic control output interface in the input and output circuit, be used to realize the automatic control of weighing-appliance.
Usually, LOAD CELLS be provided with quantity can be two, three or more, a plurality of sensors can be realized high-precision measurement.
As can be seen from the above technical solutions, the utility model carries out data sampling and the reasonably adding of data input circuit simultaneously by multidiameter delay, multichannel, therefore native system in the middle of the process that material is weighed especially for the weighing system of forming by a plurality of sensors, the utility model not only can obtain measurement data more accurately, and becomes simple for the attended operation of data transmission system.
The utility model compared with prior art, except a kind of operation of being convenient to is provided, outside the accurate more again data processing method of measuring accuracy, the utility model especially be applicable to material measure constantly and the weighing system of the accurate more multi weighing sensor of measuring requirement in.
Description of drawings
Figure 1 shows that the electronic-weighing data acquisition system (DAS) that is widely used in the present industrial processes.
Figure 2 shows that application number is 200420077815.1 Chinese utility model patent electronic-weighing data transmission system.
Figure 3 shows that electronic-weighing data transmission system structural representation provided by the utility model.
Embodiment
Below in conjunction with the accompanying drawings the utility model is described in further details by specific embodiment.
Figure 3 shows that electronic-weighing data transmission system provided by the utility model is applied to the weigh system of a specific embodiment on the belted electronic balance of industry and constitutes synoptic diagram.Belted electronic balance is the electronic-weighing equipment of in the commercial production material mass that transmits on the band conveyor being measured in real time, it has four LOAD CELLS, the corresponding signal sampling channel of each sensor, the respectively corresponding again analog to digital conversion passage of each signal sampling channel, the output of each analog to digital conversion passage is connected with the input end of data processing circuit by the mode of single channel serial line interface, the output terminal of data processing circuit is connected with data output circuit, data input circuit is connected with data processing circuit, and data storage circuitry is connected with data processing circuit.
The voltage signal of four tunnel LOAD CELLS output is respectively by being sent in the analog to digital conversion circuit behind the four bars acquisition channels, also be provided with four bars ALT-CH alternate channels and a serial line interface control circuit in the analog to digital conversion circuit, each analog to digital conversion passage is taken a sample simultaneously to the analog signals of input according to the requirement of data processing circuit and is carried out analog to digital conversion, digital quantity signal after the conversion is sent in the serial line interface control circuit, the serial line interface control circuit is by the arrangement to data, be converted to serial data information, be input to data processing circuit by synchronous serial interface, data processing circuit carries out computing and processing and then obtains actual gravimetric value digitized weight data according to the calibration parameter of predefined calculation procedure and binding data memory circuit stored, data after will handling again subsequently are sent to data output circuit, output circuit is given data display circuit with the data of input and is carried out data presentation and directly change the numerical information that we can discern into, and the data after will handling are sent into various change sending end mouths and are used for further conversion, calculate, show and use.Be provided with the keyboard input circuit in the data input circuit, can finish operations necessary to the data disposal system easily by keyboard input circuit operating personnel, as carry out the calibration operation of adjusting setting that data processing circuit carries out parameter, system and carry out query manipulation or the like with presence to each ALT-CH alternate channel.
In order to make the notebook data transmission system can realize automatic control, be respectively equipped with logic control input, output interface in the input and output circuit.Data output circuit is provided with 4-20 milliampere analog quantity electric current output interface and is used for serial data output RS232 interface, is used to realize long-range data transmission and realizes Long-distance Control.
In this transmission course, four road voltage signals are taken a sample after analog to digital conversion signal delivered to simultaneously carries out computing in the data processing circuit, making result calculated is that the mode of 200420077815.1 Chinese utility model patent has had the higher precision of metering constantly than application number, and then improved the measuring accuracy of computation weigh system, the adding of keyboard input circuit simultaneously makes operating personnel to finish operations necessary to the data disposal system easily, carries out data communication as the data treatment circuit, the adjusting setting of parameter, the calibration operation of system, and carry out query manipulation or the like with presence to each ALT-CH alternate channel.Analog to digital conversion circuit and data processing circuit adopt serial interface mode, make the input port of data processing circuit significantly to reduce, reduced requirement to the data processing module, basically be 1/4th before reducing to, so so not only saved the area of printed board, and reduced electromagnetic interference (EMI) effectively, thereby made that system's operation is more stable, promptly simplify circuit, reduce cost again.
Claims (5)
1. electronic-weighing data transmission system, it comprises the electronic-weighing equipment that is arranged on the scale body and has LOAD CELLS, it is characterized in that: it also comprises signal processing circuit, analog to digital conversion circuit, data processing circuit, data storage circuitry and data input and data output circuit;
Be provided with signal sampling channel in the described signal processing circuit, this signal sampling channel that quantity is set is corresponding with the quantity of described LOAD CELLS, and the input end of this signal sampling channel and the output terminal of described LOAD CELLS connect one to one, be provided with conversion of signals passage and serial line interface control circuit in the analog to digital conversion circuit, ALT-CH alternate channel be provided with signal sampling channel in quantity and the described signal processing circuit that quantity is set is corresponding, and each input end of this conversion of signals passage and the output terminal of described signal sampling channel connect one to one, the output terminal of each conversion of signals passage is connected with the corresponding with it input end of serial line interface control circuit, the serial line interface control circuit is by signal input part corresponding be connected of a serial line interface with data processing circuit, data storage circuitry has the calibration parameter that weight signal is converted to the actual weight value, data storage circuitry and data input, output circuit connects micro-processor interface circuit respectively.
2. electronic-weighing data transmission system according to claim 1 is characterized in that described analog to digital conversion circuit is sampled simultaneously to each data acquisition channel.
3. electronic-weighing data transmission system according to claim 1 is characterized in that described data input circuit is provided with the logic control input interface.
4. electronic-weighing data transmission system according to claim 1 is characterized in that described data output circuit is provided with the logic control output interface.
5. electronic-weighing data transmission system according to claim 1 is characterized in that described data output circuit is provided with the RS232 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201358521U CN201289399Y (en) | 2008-10-09 | 2008-10-09 | Data transmission system for electronic weighting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201358521U CN201289399Y (en) | 2008-10-09 | 2008-10-09 | Data transmission system for electronic weighting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201289399Y true CN201289399Y (en) | 2009-08-12 |
Family
ID=40981083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201358521U Expired - Fee Related CN201289399Y (en) | 2008-10-09 | 2008-10-09 | Data transmission system for electronic weighting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201289399Y (en) |
Cited By (6)
| 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 |
| CN107589718A (en) * | 2017-10-31 | 2018-01-16 | 常州市常欣电子衡器有限公司 | Non-calibrating container spreader Weighting and Controlling System and control method |
| CN108489579A (en) * | 2018-04-09 | 2018-09-04 | 济南大学 | One plant feed bin electronic scale |
| CN110487375A (en) * | 2019-07-29 | 2019-11-22 | 彭青珍 | A kind of double-type weighing sensor |
| CN111504430A (en) * | 2020-05-18 | 2020-08-07 | 南通春光自控设备工程有限公司 | Belt scale |
| CN112577585A (en) * | 2019-09-30 | 2021-03-30 | 梅特勒-托利多(常州)测量技术有限公司 | Weighing equipment, and state detection device and method of weighing sensor group |
-
2008
- 2008-10-09 CN CNU2008201358521U patent/CN201289399Y/en not_active Expired - Fee Related
Cited By (7)
| 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 |
| CN107589718A (en) * | 2017-10-31 | 2018-01-16 | 常州市常欣电子衡器有限公司 | Non-calibrating container spreader Weighting and Controlling System and control method |
| CN108489579A (en) * | 2018-04-09 | 2018-09-04 | 济南大学 | One plant feed bin electronic scale |
| CN110487375A (en) * | 2019-07-29 | 2019-11-22 | 彭青珍 | A kind of double-type weighing sensor |
| CN110487375B (en) * | 2019-07-29 | 2021-11-02 | 嘉兴博创智能传感科技有限公司 | Double weighing sensor |
| CN112577585A (en) * | 2019-09-30 | 2021-03-30 | 梅特勒-托利多(常州)测量技术有限公司 | Weighing equipment, and state detection device and method of weighing sensor group |
| CN111504430A (en) * | 2020-05-18 | 2020-08-07 | 南通春光自控设备工程有限公司 | Belt scale |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201289399Y (en) | Data transmission system for electronic weighting | |
| CN104614593B (en) | One kind is based on self-alignment high-precision intelligent instrument system and its application process | |
| CN202276369U (en) | Weight acquisition device for internet of things | |
| CN101708442B (en) | Fully automatic standard gas preparation device | |
| CN103063321B (en) | Platinum resistance temperature measuring equipment and temperature measuring method thereof | |
| CN103175547A (en) | Parameter fitting method of data acquisition device | |
| CN103837221A (en) | Electronic scale technology capable of achieving accurate metering without weight calibration | |
| CN101451824A (en) | Grating ruler counting control system and method | |
| CN203949716U (en) | A kind of digital weighing sensor | |
| CN112557987A (en) | Current measurement calibration system and method | |
| CN204556077U (en) | A kind of low-power consumption body weigher based on radio communication | |
| CN202720043U (en) | Weight automatic verification device | |
| CN211653115U (en) | Automatic calibration system for digital current sensor | |
| CN101526391A (en) | Digital hopper-balance checker | |
| CN202382877U (en) | Intrinsic safety temperature routing inspection device for mine | |
| CN205375086U (en) | Multi -path temperature detection system | |
| CN201765049U (en) | Multi-channel weighing module | |
| CN2872329Y (en) | Loading-free marking meter | |
| CN103162893A (en) | Multi-component smart pressure transmitter | |
| CN201060070Y (en) | On-line marking-correcting fixed load sensor | |
| CN102853888A (en) | Multifunctional high-precision weighing system based on virtual technology | |
| CN215338566U (en) | No-object self-adaptive weighing scale weight calibration system | |
| CN203534694U (en) | Remote-control digital weighing machine with temperature compensation function | |
| CN112462597A (en) | Coal quantity logic calculation method for coal feeder by adopting SAMA (sampling and analysis) diagram | |
| CN102928157B (en) | Calibration system and method for pressure sensor of flow integrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Yadong Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20111009 |