CN203811249U - Balance used in laboratory - Google Patents
Balance used in laboratory Download PDFInfo
- Publication number
- CN203811249U CN203811249U CN201420119796.8U CN201420119796U CN203811249U CN 203811249 U CN203811249 U CN 203811249U CN 201420119796 U CN201420119796 U CN 201420119796U CN 203811249 U CN203811249 U CN 203811249U
- Authority
- CN
- China
- Prior art keywords
- balance
- display screen
- base
- voltage
- displacement sensor
- 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
- 238000006073 displacement reaction Methods 0.000 claims abstract description 39
- 239000013307 optical fiber Substances 0.000 claims abstract description 37
- 238000005303 weighing Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model relates to a balance used in a laboratory, and belongs to the technical field of experiment apparatus. The balance comprises balance arm length adjusting nuts, a balance indicating lamp, a bottom reflection pallet I, a bottom reflection pallet II, an optical fiber displacement sensor I, an optical fiber displacement sensor II, a base horizontal adjusting nut I, a base horizontal adjusting nut II, a base horizontal adjusting nut III, a voltage comparator, a bubble level meter I, a bubble level meter II, a base, a voltage display screen I and a voltage display screen II. According to the balance used in the laboratory, the weighing precision is relatively high, the balance state of the balance is easily determined, the operation is simple, and the balance is not easily damaged.
Description
Technical field
The utility model relates to the balance that a kind of laboratory is used, and is mainly used in the weighing of laboratory small items quality, belongs to experimental apparatus technical field.
Background technology
In recent years, due to advantages such as the measuring accuracy of optical fibre displacement sensor, non-contact measured things, its application is more and more extensive, is also introduced in various surveying instruments.On the other hand, the further developing of electronic technology, high resolution voltage comparer is more and more general, and photoelectricity receives much concern in conjunction with detecting.And in the experiment in laboratory, be no matter Physical Experiment or in chemical experiment, all cannot avoid using balance small items to be carried out to the accurate measurement of quality.Conventionally we can select balance to measure, but, we use balance great majority to belong to exact instrument, weighing article is that requirement quality is smaller, and complicated operation, student easily damages because of carelessness in operating process, and the equilibrium state due to balance relies on mechanical indicator to judge simultaneously, to student's judgement, make troubles, in measuring process, bring artificial error into.
Summary of the invention
The technical problems to be solved in the utility model is: the balance that the utility model provides a kind of laboratory to use, the technical matters that precision balance is fragile for solving, equilibrium state is difficult to judgement.
Technical solutions of the utility model are: the balance that a kind of laboratory is used, comprises balance brachium setting nut 1, Balance pilot lamp 2, the reflective pallet I 31 in bottom surface, the reflective pallet II 32 in bottom surface, optical fibre displacement sensor I 41, optical fibre displacement sensor II 42, base Level tune nut I 51, base Level tune nut II 52, base Level tune nut III 53, voltage comparator 6, air-bubble level I 71, air-bubble level II 72, base 8, voltage display screen I 91, voltage display screen II 92, described balance brachium setting nut 1 is located at the two ends of balance crossbeam, the reflective pallet I 31 in bottom surface, the reflective pallet II 32 in bottom surface is suspended on balance crossbeam, optical fibre displacement sensor I 41 and voltage display screen I 91 are fixed on the left end of base 8, optical fibre displacement sensor I 41 be positioned at voltage display screen I 91 the reflective pallet I 31 in bottom surface above under, optical fibre displacement sensor II 42 and voltage display screen II 92 are fixed on the right-hand member of base 8, optical fibre displacement sensor II 42 be positioned at voltage display screen II 92 the reflective pallet II 32 in bottom surface above under, voltage comparator 6 is fixed on the centre of base 8, the output of voltage comparator 6 is connected with Balance pilot lamp 2, Balance pilot lamp 2 is arranged in and is fixed on the middle pipeline of balance crossbeam, base Level tune nut I 51, base Level tune nut II 52 and base Level tune nut III 53 are all contained in the lower end of base 8, air-bubble level I 71 and air-bubble level II 72 are fixed on above base 8, air-bubble level I 71 is between voltage display screen I 91 and voltage comparator 6, air-bubble level II 72 is between voltage display screen II 92 and voltage comparator 6, described optical fibre displacement sensor I 41 respectively with voltage display screen I 91, voltage comparator 6 is connected, optical fibre displacement sensor II 42 respectively with voltage display screen II 92, voltage comparator 6 is connected.
Described balance brachium setting nut 1 is for regulating balance left and right brachium.
The measured voltage of described optical fibre displacement sensor I 41 outputs to respectively voltage display screen I 91 and voltage comparator 6, the measured voltage of optical fibre displacement sensor II 42 outputs to respectively voltage display screen II 92 and voltage comparator 6, the output of voltage comparator 6 is connected with Balance pilot lamp 2, base Level tune nut I 51, base Level tune nut II 52 and base Level tune nut III 53 are for the level of adjusting base 8, and whether level judges by air-bubble level I 71 and air-bubble level II 72 base 8.
Principle of work of the present utility model is: regulate balance brachium setting nut 1, make the left and right arms of balance isometric, object under test and counterweight are placed in respectively the reflective pallet II 32 of the reflective pallet I 31 in bottom surface and bottom surface, when mass of object is equal with counterbalance mass, voltage display screen I 91 shows identical magnitude of voltage with voltage display screen II 92, and Balance pilot lamp 2 is lit.If balance cannot be realized balance in measurement, it is nuance, voltage display screen I 91 and voltage display screen II 92 do not show identical magnitude of voltage, there is a small difference, and Balance pilot lamp 2 is not lit, we can select two quality to differ minimum counterweight, put into respectively the reflective pallet II 32 of the reflective pallet I 31 in bottom surface and bottom surface, measure the difference of voltage now, then in counterweight total value, add that the result that is multiplied by the poor gained of counterbalance mass after (or deducting) two voltage differences are divided by is the approximate value of object under test quality, this device is measured the reflective pallet in bottom surface by optical fibre displacement sensor and to optical fibre displacement sensor distance, is judged the equilibrium state of balance, and convert displacement to voltage and show on voltage display screen, when in the reflective pallet in bottom surface, weight of object and counterweight are equal in weight, the reflective pallet in bottom surface also equates to optical fibre displacement sensor distance, therefore the output voltage of two optical fibre displacement sensors equates, voltage comparator output high level is lighted Balance pilot lamp.
During use, there will be two kinds of situations of equilibrium and non-equilibrium:
Situation one: adjusting base Level tune nut I 51, base Level tune nut II 52 and base Level tune nut III 53 make after base 8 levels, tested article are put into the reflective pallet I 31 in bottom surface, the left side, to bottom surface, the right, reflective pallet II 32 adds counterweight, place order for from small to large, until Balance, now voltage display screen I 91 and voltage display screen II 92 shows identical magnitude of voltage, and Balance pilot lamp 2 is lit, and this situation is generally used for Powdered article and weighs.
Situation two: regulate Level tune nut I 51, base Level tune nut II 52 and base Level tune nut III 53 to make after base 8 levels, tested article are put into the reflective pallet I 31 in bottom surface, the left side, to bottom surface, the right, reflective pallet II 32 adds counterweight, place order for from small to large, noncontinuity due to counterbalance mass, balance can not reach balance, and now voltage display screen I 91 shows different magnitudes of voltage with voltage display screen II 92, and Balance pilot lamp 2 extinguishes.In this case, write down the magnitude of voltage V of voltage display screen I 91
1magnitude of voltage V with voltage display screen II 92
2, suppose V
1>V
2, its difference is △ V
1=V
1-V
2, write down the mass M of counterweight simultaneously
0, take off tested article and counterweight; Again get two quality and differ very little counterweight M
1and M
2, suppose M
1> M
2, difference is △ M=M
1-M
2, now voltage display screen I 91 and voltage display screen II 92 can show different magnitudes of voltage equally, and Balance pilot lamp 2 is also in extinguishing state, again writes down the magnitude of voltage V of voltage display screen I 91
3magnitude of voltage V with voltage display screen II 92
4, its difference is △ V
2=V
3-V
4, the linear relationship of measuring displacement and output voltage according to optical fibre displacement sensor can obtain the mass M=M of object
0+ △ M * △ V
1 ÷△ V
2.This situation is generally used for the weighing of indivisible article.
The beneficial effects of the utility model are: the resolution that in the utility model, optical fibre displacement sensor is adjusted the distance is micron dimension, and voltage comparator resolution is to microvolt magnitude, weighed object product mass range increases to some extent, therefore the precision weighing is relatively high, Balance state is easy to judgement, simple to operate, not fragile.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Each label in Fig. 1: 1-balance brachium setting nut, 2-Balance pilot lamp, the reflective pallet I in 31-bottom surface, the reflective pallet II in 32-bottom surface, 41-optical fibre displacement sensor I, 42-optical fibre displacement sensor II, 51-base Level tune nut I, 52-base Level tune nut II, 53-base Level tune nut III, 6-voltage comparator, 71-air-bubble level I, 72-air-bubble level II, 8-base, 91-voltage display screen I, 92-voltage display screen II.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, the balance that laboratory is used, comprises balance brachium setting nut 1, Balance pilot lamp 2, the reflective pallet I 31 in bottom surface, the reflective pallet II 32 in bottom surface, optical fibre displacement sensor I 41, optical fibre displacement sensor II 42, base Level tune nut I 51, base Level tune nut II 52, base Level tune nut III 53, voltage comparator 6, air-bubble level I 71, air-bubble level II 72, base 8, voltage display screen I 91, voltage display screen II 92, described balance brachium setting nut 1 is located at the two ends of balance crossbeam, the reflective pallet I 31 in bottom surface, the reflective pallet II 32 in bottom surface is suspended on balance crossbeam, optical fibre displacement sensor I 41 and voltage display screen I 91 are fixed on the left end of base 8, optical fibre displacement sensor I 41 be positioned at voltage display screen I 91 the reflective pallet I 31 in bottom surface above under, optical fibre displacement sensor II 42 and voltage display screen II 92 are fixed on the right-hand member of base 8, optical fibre displacement sensor II 42 be positioned at voltage display screen II 92 the reflective pallet II 32 in bottom surface above under, voltage comparator 6 is fixed on the centre of base 8, the output of voltage comparator 6 is connected with Balance pilot lamp 2, Balance pilot lamp 2 is arranged in and is fixed on the middle pipeline of balance crossbeam, base Level tune nut I 51, base Level tune nut II 52 and base Level tune nut III 53 are all contained in the lower end of base 8, air-bubble level I 71 and air-bubble level II 72 are fixed on above base 8, air-bubble level I 71 is between voltage display screen I 91 and voltage comparator 6, air-bubble level II 72 is between voltage display screen II 92 and voltage comparator 6, described optical fibre displacement sensor I 41 respectively with voltage display screen I 91, voltage comparator 6 is connected, optical fibre displacement sensor II 42 respectively with voltage display screen II 92, voltage comparator 6 is connected.
By reference to the accompanying drawings specific embodiment of the utility model is explained in detail above, but the utility model is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from the utility model aim, make various variations.
Claims (1)
1. the balance that a laboratory is used, it is characterized in that: comprise balance brachium setting nut (1), Balance pilot lamp (2), the reflective pallet I in bottom surface (31), the reflective pallet II in bottom surface (32), optical fibre displacement sensor I (41), optical fibre displacement sensor II (42), base Level tune nut I (51), base Level tune nut II (52), base Level tune nut III (53), voltage comparator (6), air-bubble level I (71), air-bubble level II (72), base (8), voltage display screen I (91), voltage display screen II (92), described balance brachium setting nut (1) is located at the two ends of balance crossbeam, the reflective pallet I in bottom surface (31), the reflective pallet II in bottom surface (32) is suspended on balance crossbeam, optical fibre displacement sensor I (41) and voltage display screen I (91) are fixed on the left end of base (8), optical fibre displacement sensor I (41) be positioned at voltage display screen I (91) the reflective pallet I in bottom surface (31) above under, optical fibre displacement sensor II (42) and voltage display screen II (92) are fixed on the right-hand member of base (8), optical fibre displacement sensor II (42) be positioned at voltage display screen II (92) the reflective pallet II in bottom surface (32) above under, voltage comparator (6) is fixed on the centre of base (8), the output of voltage comparator (6) is connected with Balance pilot lamp (2), Balance pilot lamp (2) is arranged in and is fixed on the middle pipeline of balance crossbeam, base Level tune nut I (51), base Level tune nut II (52) and base Level tune nut III (53) are all contained in the lower end of base (8), air-bubble level I (71) and air-bubble level II (72) are fixed on base (8) above, air-bubble level I (71) is positioned between voltage display screen I (91) and voltage comparator (6), air-bubble level II (72) is positioned between voltage display screen II (92) and voltage comparator (6), described optical fibre displacement sensor I (41) respectively with voltage display screen I (91), voltage comparator (6) is connected, optical fibre displacement sensor II (42) respectively with voltage display screen II (92), voltage comparator (6) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119796.8U CN203811249U (en) | 2014-03-18 | 2014-03-18 | Balance used in laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119796.8U CN203811249U (en) | 2014-03-18 | 2014-03-18 | Balance used in laboratory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811249U true CN203811249U (en) | 2014-09-03 |
Family
ID=51449987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119796.8U Expired - Fee Related CN203811249U (en) | 2014-03-18 | 2014-03-18 | Balance used in laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811249U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052833A (en) * | 2016-07-18 | 2016-10-26 | 上海天美天平仪器有限公司 | Level bubble automatic adjusting system |
| CN108564851A (en) * | 2018-01-19 | 2018-09-21 | 王泽普 | A kind of physical teaching aid for middle school |
| CN109084869A (en) * | 2018-08-01 | 2018-12-25 | 桂林电子科技大学 | High-precision optical fiber balance system |
-
2014
- 2014-03-18 CN CN201420119796.8U patent/CN203811249U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052833A (en) * | 2016-07-18 | 2016-10-26 | 上海天美天平仪器有限公司 | Level bubble automatic adjusting system |
| CN106052833B (en) * | 2016-07-18 | 2022-05-06 | 上海天美天平仪器有限公司 | Automatic adjusting system for level bubble |
| CN108564851A (en) * | 2018-01-19 | 2018-09-21 | 王泽普 | A kind of physical teaching aid for middle school |
| CN109084869A (en) * | 2018-08-01 | 2018-12-25 | 桂林电子科技大学 | High-precision optical fiber balance system |
| CN109084869B (en) * | 2018-08-01 | 2023-12-19 | 桂林电子科技大学 | High-precision optical fiber balance system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150318 |
|
| EXPY | Termination of patent right or utility model |