CN102288273A - Electro-optical analytical balance - Google Patents
Electro-optical analytical balance Download PDFInfo
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- CN102288273A CN102288273A CN2011101849036A CN201110184903A CN102288273A CN 102288273 A CN102288273 A CN 102288273A CN 2011101849036 A CN2011101849036 A CN 2011101849036A CN 201110184903 A CN201110184903 A CN 201110184903A CN 102288273 A CN102288273 A CN 102288273A
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- analytical balance
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Abstract
The invention discloses an electro-optical analytical balance with a coarse weighing device, which comprises a lifting pivot, a weighing sensor, an amplifying circuit, an analog-to-digital converter and a display, wherein the weighing sensor is arranged below an object weighing tray and is used for converting pressure into a voltage signal; the amplifying circuit is used for amplifying the voltage signal; the analog-to-digital converter is used for converting a voltage analog signal into a digital signal; the display is used for displaying the digital signal; an output end of the weighing sensor is connected with the amplifying circuit; an output end of the amplifying circuit is connected with the analog-to-digital converter; an output end of the analog-to-digital converter is connected with the display; and the weighing sensor is connected with the lifting pivot. When the electro-optical analytical balance is in use, the coarse weighing of a weighed object is completed in the analytical balance; the process of transferring the weighed object is saved; the operation is convenient; and the weighed object is prevented from being polluted to influence weighing precision.
Description
Technical field
The present invention relates to a kind of photoelectric analytical balance, be specifically related to a kind of photoelectric analytical balance that has rough meausring apparatus.
Background technology
Half mechanical type in chemical analysis field at present, the fully mechanical photoelectric analytical balance is still used widely, generally comprise balance beam, pillar, hanger, the fulcrum edge of a knife, the ring sign indicating number, ring sign indicating number index dish, stipule, damper, scale pan, pan arrest, pointer, projection screen, it plain bonnet, the lifting pivot, the fine motion adjuster bar, it flatfoot, the balance adjustment screw, but this balance is cumbersome when weighing is operated, mainly be because surpassed the range of analytical balance and guestimate by the quality of weighed object by the quality of weighed object in order to prevent, weighing in the lower general utility balance of precision earlier, estimate by the coarse value of weighed object quality, transfer to weighing once more in the photoelectric analytical balance then, draw by the exact value of weighed object quality.Such process not only troublesome poeration, time is long, and must be to being carried out protection by weighed object, in order to avoid contaminated in transfer.
Summary of the invention
The objective of the invention is provides a kind of photoelectric analytical balance that has rough meausring apparatus at existing photoelectric analytical balance above shortcomings.
The objective of the invention is to realize by following technological means: comprise the lifting pivot, be located at claim below the thing dish be used for pressure be converted to voltage signal LOAD CELLS, be used for amplification voltage signal amplifying circuit, be used for voltage analog signal be converted to digital signal analog to digital converter, be used for the display of display digit signal, the LOAD CELLS output terminal connects amplifying circuit, amplification circuit output end connection mode number converter, the analog to digital converter output terminal connects described display, and LOAD CELLS is connected with the lifting pivot.
LOAD CELLS among the present invention also can be arranged on the pan arrest that claims the thing dish, and pan arrest is connected with the lifting pivot, moved up and down by the control of lifting pivot.
The present invention has further solved the problem that prevents to claim to be damaged above the balance range by the quantity of material amount balance, for solving this technical matters, amplification circuit output end of the present invention is connected with comparer, and comparator output terminal connects on-off circuit, the on-off circuit connecting coil, coil control locking device.
When being claimed less than the photoelectric analytical balance amount by the weighed object quality, comparer output output high level, electric current is passed through in on-off circuit work in the coil, the release locking device, analytical balance could be worked, otherwise analytical balance can not be worked.
Compared with prior art the present invention has following tangible advantage: the rough weighing by weighed object is finished in analytical balance, saved the process that weighed object shifts, easy to operate, avoid contaminated and influence the precision of weighing by weighed object, and can prevent to claim to be surpassed the balance range and damage the problem of balance by the quantity of material amount.
Description of drawings
Fig. 1 is the structural representation of the first embodiment of the present invention;
Fig. 2 is the signal flow diagram of the first embodiment of the present invention;
Fig. 3 is the structural representation of the second embodiment of the present invention;
Among the figure, 1-claims the thing dish, the 2-LOAD CELLS, and the 3-lead, the 4-PCB plate, the 5-display, the 6-projection screen, the 21-pan arrest, the 7-comparer, the 8-on-off circuit, the 9-coil, the 10-locking device, 101-locks bolt, 102-hole, 103-lifting pivotal axis, 104-lock hole.
Embodiment
The present invention is described in further detail below in conjunction with description of drawings and embodiment:
Be illustrated in figure 1 as the structure of first embodiment of the invention, being provided with below the title thing dish 1 of photoelectric analytical balance below LOAD CELLS 2, the LOAD CELLS 2 is pan arrest 21, the pcb board 4 that LOAD CELLS 2 connects in projection screen 6 bases by lead 3, amplifying circuit, analog to digital converter, display 5 are arranged on the pcb board 4, pan arrest is connected with the lifting pivot, moved up and down by the control of lifting pivot.
Be illustrated in figure 2 as the first embodiment of the invention signal flow diagram, LOAD CELLS 2 is used for pressure is converted to voltage signal, and output terminal connects amplifying circuit; Amplifying circuit is used to amplify the voltage signal of input, output terminal connection mode number converter; It is digital signal that analog to digital converter is used for analog signal conversion, and output terminal connects display; Display 5 is used to show the digital signal of input.
Be illustrated in figure 3 as the structure of second embodiment of the invention, be, increase comparer 7, on-off circuit 8, coil 9, locking device 10 with the difference of first embodiment.Comparer 7 is made up of operational amplifier A, the in-phase input end of operational amplifier A connects a stable voltage, inverting input connects the output terminal of amplifying circuit, between inverting input and output terminal, meet diode D, inverting input connects the positive pole of diode D, output terminal connects the negative pole of diode D, the input end of output termination on-off circuit 8; On-off circuit 8 is made of triode G, and base stage is an input end, grounded emitter, and collector connects power Vcc by coil 9.The hole 102 of the locking bolt 101 that locking device 10 is made by ferrous material, day plain bonnet bottom surface and the lock hole 104 on the lifting pivotal axis 103 constitute, and an end of locking bolt 101 is near an end of coil 9, and the other end passes hole 102 and stretches into lock hole 104.
Comparer 7 receives the amplifying circuit output voltage, when this voltage during less than the burning voltage of the expression balance range of setting, output is greater than the high level of zero potential, on-off circuit 8 states of working in out, by electric current, the magnetic field suction of generation locking bolt 101 moves up in the coil 9, the other end hole 104 that goes out of lock of locking bolt 101, allow lifting pivotal axis 103 to rotate, thus the release balance, and balance could be worked; When comparer inverting input voltage during greater than the burning voltage of the expression balance range of setting, comparer output is less than the low level of zero potential, on-off circuit 8 works in off status, there is not electric current in the coil 9, can't produce magnetic field suction locking bolt 101 moves, since the acting in conjunction of locking bolt 101 and lock hole 104, lifting pivotal axis 103 moving can't rotations, and balance can not be worked.The effect of diode D be the low level that makes comparer output become-0.3V～-0.7V, protection switch circuit 8 makes it to be in normal duty.
In a word, the invention provides a kind of photoelectric analytical balance that has rough meausring apparatus, saved process that weighed object shifts, easy to operate, avoid contaminated and influence the precision of weighing by weighed object.The above; only be a part of embodiment of the present invention, protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (7)
1. photoelectric analytical balance, it is characterized in that: comprise the lifting pivot, be located at claim below the thing dish be used for pressure be converted to voltage signal LOAD CELLS, be used for amplification voltage signal amplifying circuit, be used for voltage analog signal be converted to digital signal analog to digital converter, be used for the display of display digit signal, described LOAD CELLS output terminal connects described amplifying circuit, described amplification circuit output end connects described analog to digital converter, described analog to digital converter output terminal connects described display, and described LOAD CELLS is connected with described lifting pivot.
2. photoelectric analytical balance according to claim 1 is characterized in that: also comprise pan arrest, described pan arrest is located at below the described LOAD CELLS, and described pan arrest is connected with described lifting pivot.
3. photoelectric analytical balance according to claim 1, it is characterized in that: also comprise be used to judge by weighed object quality and analytical balance amount claim size comparer, locking device, be used to control described locking device coil, be used to drive the on-off circuit of described coil, described amplifying circuit connects described comparer inverting input; Described comparer in-phase input end connects a burning voltage, and output terminal connects described on-off circuit, and described on-off circuit connects described coil.
4. photoelectric analytical balance according to claim 3, it is characterized in that: described locking device by have the hole on ferromagnetic locking bolt, day plain bonnet base plate, the lock hole on the lifting pivotal axis is formed, one end of described locking bolt is near an end of described coil, and the described locking bolt other end stretches into lock hole by the hole on the described sky plain bonnet base plate.
5. photoelectric analytical balance according to claim 3 is characterized in that: described comparer mainly is made up of operational amplifier.
6. photoelectric analytical balance according to claim 3 is characterized in that: described on-off circuit mainly is made up of triode, and the collector of described triode connects described coil.
7. photoelectric analytical balance according to claim 5 is characterized in that: also comprise diode, described operational amplifier inverting input connects the positive pole of described diode, the negative pole of the described diode of output termination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110184903 CN102288273B (en) | 2011-07-04 | 2011-07-04 | Electro-optical analytical balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110184903 CN102288273B (en) | 2011-07-04 | 2011-07-04 | Electro-optical analytical balance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102288273A true CN102288273A (en) | 2011-12-21 |
| CN102288273B CN102288273B (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110184903 Active CN102288273B (en) | 2011-07-04 | 2011-07-04 | Electro-optical analytical balance |
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| CN (1) | CN102288273B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061986A (en) * | 2013-03-22 | 2014-09-24 | 深圳市海洋王照明工程有限公司 | Balance circuit |
| CN104406679A (en) * | 2014-11-27 | 2015-03-11 | 上海舜宇恒平科学仪器有限公司 | Photoelectrical conversion device for adjusting balance position of electronic scale |
| CN108020311A (en) * | 2017-12-29 | 2018-05-11 | 苏州市计量测试研究所 | Device for peeling is exempted from a kind of counterweight loading of electronic crane scale |
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| CN2390192Y (en) * | 1999-08-05 | 2000-08-02 | 西北农业大学 | Weighing protection device for electronic balance (electronic scale) |
| CN2480822Y (en) * | 2001-05-23 | 2002-03-06 | 长沙三德实业有限公司 | Balance protector for automatic industrial analysis instrument |
| CN2543044Y (en) * | 2002-02-22 | 2003-04-02 | 上海民桥精密科学仪器有限公司 | Medical electronic balance |
| CN101042306A (en) * | 2006-12-31 | 2007-09-26 | 李彩珍 | Intelligent digital balance |
| CN201155988Y (en) * | 2008-01-25 | 2008-11-26 | 王树喜 | Fume collector automatic gauging device |
| CN202195875U (en) * | 2011-07-04 | 2012-04-18 | 孟凡强 | Electro-optic analytical balance |
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2011
- 2011-07-04 CN CN 201110184903 patent/CN102288273B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2390192Y (en) * | 1999-08-05 | 2000-08-02 | 西北农业大学 | Weighing protection device for electronic balance (electronic scale) |
| CN2480822Y (en) * | 2001-05-23 | 2002-03-06 | 长沙三德实业有限公司 | Balance protector for automatic industrial analysis instrument |
| CN2543044Y (en) * | 2002-02-22 | 2003-04-02 | 上海民桥精密科学仪器有限公司 | Medical electronic balance |
| CN101042306A (en) * | 2006-12-31 | 2007-09-26 | 李彩珍 | Intelligent digital balance |
| CN201155988Y (en) * | 2008-01-25 | 2008-11-26 | 王树喜 | Fume collector automatic gauging device |
| CN202195875U (en) * | 2011-07-04 | 2012-04-18 | 孟凡强 | Electro-optic analytical balance |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061986A (en) * | 2013-03-22 | 2014-09-24 | 深圳市海洋王照明工程有限公司 | Balance circuit |
| CN104061986B (en) * | 2013-03-22 | 2016-04-13 | 深圳市海洋王照明工程有限公司 | Balance circuit |
| CN104406679A (en) * | 2014-11-27 | 2015-03-11 | 上海舜宇恒平科学仪器有限公司 | Photoelectrical conversion device for adjusting balance position of electronic scale |
| CN104406679B (en) * | 2014-11-27 | 2016-08-24 | 上海舜宇恒平科学仪器有限公司 | A kind of photoelectric conversion device for the regulation of electronic balance equilbrium position |
| CN108020311A (en) * | 2017-12-29 | 2018-05-11 | 苏州市计量测试研究所 | Device for peeling is exempted from a kind of counterweight loading of electronic crane scale |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102288273B (en) | 2013-05-01 |
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Address after: 273500 box 13, experimental middle school, Zoucheng City, Shandong Province, Jining Applicant after: Meng Fanqiang Address before: 273500 Shandong city of Jining province Zoucheng City escorting Road No. 1299 Applicant before: Meng Fanqiang |
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Owner name: NANTONG HUALONG MICROELECTRONICS CO., LTD. Free format text: FORMER OWNER: MENG FANQIANG Effective date: 20131118 |
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Effective date of registration: 20131118 Address after: 226300 Jiangsu city of Nantong province Tongzhou District Xing Dong Zhen Sun Li Qiao Cun West eight groups Patentee after: Nantong Hualong Microelectronics Co., Ltd. Address before: 273500 box 13, experimental middle school, Zoucheng City, Shandong Province, Jining Patentee before: Meng Fanqiang |