CN102768066A - Intelligent electronic balance - Google Patents
Intelligent electronic balance Download PDFInfo
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- CN102768066A CN102768066A CN201210286992XA CN201210286992A CN102768066A CN 102768066 A CN102768066 A CN 102768066A CN 201210286992X A CN201210286992X A CN 201210286992XA CN 201210286992 A CN201210286992 A CN 201210286992A CN 102768066 A CN102768066 A CN 102768066A
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Abstract
The invention discloses an intelligent electronic balance which comprises a singlechip controller, high-accuracy sensors, an instrument display part, a keyboard input device, high-accuracy numbering transmitters and a power supply, wherein the singlechip controller is of an AT89S51 series, the high-accuracy sensors are two shear beam weighing sensors of SB series, the two sensors are independently connected with two high-accuracy numbering transmitters respectively, and the keyboard input device is a high-performance waterproof plastic film pressure keyboard. The intelligent electronic balance is advanced in design technology, reliable in performance, high in accuracy and large in range, can meet requirements of metrological verification of supermassive weights and material large-mass accurate test of agriculture and industry, schools, research units and the like, and is worthy to be popularized and applied.
Description
Technical field
The present invention relates to a kind of balance, be specifically related to a kind of intelligent electronic balance, belong to field of measuring techniques.
Background technology
Along with electronic technology and micro-computer technology develop rapidly, and be applied to the balance field, electronic balance occurred.From last century the seventies first electronic balance appears in the world latter stage, in short thirties years, develop and all size, series electronic balance covering extensive fields, be widely used in all trades and professions mass metrology.Electronic balance has the incomparable advantage of mechanical balance.It can numeral shows, directly reading, weighing fast, easy and simple to handle, antijamming capability is strong; And it is intelligent, multi-functional to have adopted microcomputer technology to make; Can carry out on-line measurement with printer, computing machine are mutually online; Make data statistic analysis etc. become possibility, so range of application more and more widely.
China's electronic balance development; Follow closely after the international developed country; Begin in the eighties initial stage in last century; Though some aspect has begun to take shape large-scale production and has been widely applied to domestic each field now, also belong to the starting stage at home as the development and production of intelligent, the wide range that is used to examine and determine super large quality counterweight, precise electronic balance.Therefore, design a kind of large range high precision electronic balance that can be used as calibrating super large quality counterweight, seem particularly important.
Summary of the invention
To the demand; The invention provides a kind of intelligent electronic balance; This electronic balance designing technique advanced person, dependable performance, precision are high, range is big; Satisfied the requirement of measurement verification and industrial or agricultural, school, the R&D institution etc. of super large quality counterweight, had application value preferably as the big density test high in quality of material.
The present invention is a kind of intelligent electronic balance; This electronic balance comprises singlechip controller, high-precision sensor, instrument display part, keyboard input devices, high accuracy number transmitter and power supply; Described singlechip controller adopts AT89S51 series; Described high-precision sensor adopts 2 SB series shear beam load cells, and these 2 sensors are 2 digital transmitters of separate connection respectively, and described keyboard input devices adopts high performance water proof plastic cement press mold keyboard.
In the present invention's one preferred embodiment, the maximum range of described SB series shear beam load cell is 500kg, and this sensor is directly stressed when weighing, and has avoided the lever stress of traditional balance.
In the present invention's one preferred embodiment, described high accuracy number transmitter is made up of pre-amplifying module, A/D module and AT89S51 chip; Wherein, what the A/D module adopted is 24 delta-sigma modulus conversion chips of high integration, is fit to measure list/bipolarity small-signal.
In the present invention's one preferred embodiment, described high accuracy number transmitter adopts Sampling techniques that signal is sampled, and carries out filtering through digital filter then and obtains final transformation result, and issue singlechip controller through the high speed field bus protocol and handle.
In the present invention's one preferred embodiment, the word rate of described A/D module is 7.5Hz, and its inner chopper-stabilized instrumentation amplifier adopts 64X that simulating signal is carried out the front end amplification.
In the present invention's one preferred embodiment, described instrument display part comprises to be demarcated part and weighs part, wherein, demarcates part and adopts the method for repeatedly sampling back medium filtering output to obtain the nominal data source; The data source that the part of weighing adopts repeatedly sampling back medium filtering output disappears through first-order lag filtering and amplitude limit and trembles after the filtering result of calculation with demarcating module through calculating the actual weight that weight is exported in the back.
The present invention has disclosed a kind of intelligent electronic balance; This electronic balance designing technique advanced person, dependable performance, precision are high, range is big; Satisfied the requirement of measurement verification and industrial or agricultural, school, the R&D institution etc. of super large quality counterweight, had application value preferably as the big density test high in quality of material.
Description of drawings
Fig. 1 is the composition structure principle chart of embodiment of the invention intelligent electronic balance.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
Fig. 1 is the composition structure principle chart of embodiment of the invention intelligent electronic balance; This electronic balance comprises singlechip controller, high-precision sensor, instrument display part, keyboard input devices, high accuracy number transmitter and power supply; Described singlechip controller adopts AT89S51 series; Described high-precision sensor adopts 2 SB series shear beam load cells; These 2 sensors are 2 digital transmitters of separate connection respectively, and described keyboard input devices adopts high performance water proof plastic cement press mold keyboard.
The intelligent electronic balance that the present invention mentions adopts AT89S51 series monolithic controller as main control module, and this controling appliance has functional structure maturation, advantages such as speed is fast, antijamming capability is strong, stable and reliable operation; LOAD CELLS is the heart of electronic balance; Its effect is that the weight with testee converts corresponding electric signal to; This intelligent electronic balance adopts 2 SB series shear beam load cells; The maximum range of every sensor is 500kg, and this sensor is directly stressed when weighing, and does like this to have strengthened weighing platform effectively and moving
Accuracy behind the moving position has avoided lever system after moving, to need the problem of demarcating again, and simultaneously, 2 sensors are 2 digital transmitters of separate connection respectively, fundamentally simulating signal are isolated, the precision and the accuracy of the data that guarantee to weigh.
The high accuracy number transmitter that this intelligent electronic balance adopts is made up of pre-amplifying module, A/D module and AT89S51 chip; Wherein, What the A/D module adopted is 24 delta-sigma modulus conversion chips of high integration, and its word rate is 7.5Hz, owing to adopted charge balance technique; So be fit to very much measure list/bipolarity small-signal; This chip internal has an extremely low noise chopper-stabilized instrumentation amplifier and a digital filter, and wherein, chopper-stabilized instrumentation amplifier adopts 64X that simulating signal is carried out the front end amplification; Digital filter can provide outstanding stable numeral output to the simulating signal that fast trace changes; This high accuracy number transmitter adopts Sampling techniques that signal is sampled; Carry out filtering through digital filter then and obtain final transformation result; And issue singlechip controller through the high speed field bus protocol and handle, simultaneously through high speed fieldbus and instrument communication.
The instrument display part of this intelligent electronic balance adopts the LED charactron as display element, and this display element has advantages such as long service life, brightness are high, energy-conservation.This instrument display part comprises to be demarcated part and weighs part, wherein, demarcates part and adopts the method for repeatedly sampling back medium filtering output to obtain the nominal data source, has guaranteed the accuracy in nominal data source; In calibration process if the bigger situation of data source fluctuation then instrument remove all new calibration process of data cached beginning of sampling automatically, thereby guaranteed the stability in nominal data source; The data source that the part of weighing adopts repeatedly sampling back medium filtering output disappears through first-order lag filtering and amplitude limit and trembles after the filtering result of calculation with demarcating module through calculating the actual weight that weight is exported in the back.
The present invention has disclosed a kind of intelligent electronic balance; This electronic balance designing technique advanced person, dependable performance, precision are high, range is big; Satisfied the requirement of measurement verification and industrial or agricultural, school, the R&D institution etc. of super large quality counterweight, had application value preferably as the big density test high in quality of material.
The above; Be merely embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any those of ordinary skill in the art are in the technical scope that the present invention disclosed, and variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (6)
1. intelligent electronic balance; It is characterized in that; This electronic balance comprises singlechip controller, high-precision sensor, instrument display part, keyboard input devices, high accuracy number transmitter and power supply, and described singlechip controller adopts AT89S51 series, and described high-precision sensor adopts 2 SB series shear beam load cells; These 2 sensors are 2 digital transmitters of separate connection respectively, and described keyboard input devices adopts high performance water proof plastic cement press mold keyboard.
2. intelligent electronic balance according to claim 1 is characterized in that, the maximum range of described SB series shear beam load cell is 500kg, and this sensor is directly stressed when weighing, and has avoided the lever stress of traditional balance.
3. intelligent electronic balance according to claim 1 is characterized in that, described high accuracy number transmitter is made up of pre-amplifying module, A/D module and AT89S51 chip; Wherein, what the A/D module adopted is 24 delta-sigma modulus conversion chips of high integration, is fit to measure list/bipolarity small-signal.
4. intelligent electronic balance according to claim 3; It is characterized in that; Described high accuracy number transmitter adopts Sampling techniques that signal is sampled; Carry out filtering through digital filter then and obtain final transformation result, and issue singlechip controller through the high speed field bus protocol and handle.
5. intelligent electronic balance according to claim 3 is characterized in that, the word rate of described A/D module is 7.5Hz, and its inner chopper-stabilized instrumentation amplifier adopts 64X that simulating signal is carried out the front end amplification.
6. intelligent electronic balance according to claim 1 is characterized in that, described instrument display part comprises to be demarcated part and weigh part, wherein, demarcates part and adopts the method for repeatedly sampling back medium filtering output to obtain the nominal data source; The data source that the part of weighing adopts repeatedly sampling back medium filtering output disappears through first-order lag filtering and amplitude limit and trembles after the filtering result of calculation with demarcating module through calculating the actual weight that weight is exported in the back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210286992XA CN102768066A (en) | 2012-08-14 | 2012-08-14 | Intelligent electronic balance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286992XA CN102768066A (en) | 2012-08-14 | 2012-08-14 | Intelligent electronic balance |
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| CN102768066A true CN102768066A (en) | 2012-11-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656437A (en) * | 2015-12-17 | 2016-06-08 | 滁州市博创电气有限公司 | Signal transformer module |
| CN109115925A (en) * | 2018-10-09 | 2019-01-01 | 江苏农牧科技职业学院 | The extraction element of Paeoniflorin and benzoic acid content in a kind of radix paeoniae rubra and Radix Paeoniae Alba |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5254992A (en) * | 1991-10-31 | 1993-10-19 | Fairbanks Inc. | Low power electronic measuring system |
| CN101118173A (en) * | 2007-09-10 | 2008-02-06 | 刘昭元 | Minisize electronic scales |
| CN101666675A (en) * | 2008-09-02 | 2010-03-10 | 上海耀华称重系统有限公司 | Weighing indicator |
| CN201464013U (en) * | 2009-08-07 | 2010-05-12 | 山西太钢不锈钢股份有限公司 | Split-type suspension arm steel coil online weighing device |
-
2012
- 2012-08-14 CN CN201210286992XA patent/CN102768066A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5254992A (en) * | 1991-10-31 | 1993-10-19 | Fairbanks Inc. | Low power electronic measuring system |
| CN101118173A (en) * | 2007-09-10 | 2008-02-06 | 刘昭元 | Minisize electronic scales |
| CN101666675A (en) * | 2008-09-02 | 2010-03-10 | 上海耀华称重系统有限公司 | Weighing indicator |
| CN201464013U (en) * | 2009-08-07 | 2010-05-12 | 山西太钢不锈钢股份有限公司 | Split-type suspension arm steel coil online weighing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656437A (en) * | 2015-12-17 | 2016-06-08 | 滁州市博创电气有限公司 | Signal transformer module |
| CN109115925A (en) * | 2018-10-09 | 2019-01-01 | 江苏农牧科技职业学院 | The extraction element of Paeoniflorin and benzoic acid content in a kind of radix paeoniae rubra and Radix Paeoniae Alba |
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Application publication date: 20121107 |