CN2653498Y - Refractive meter optical fibre probe - Google Patents
Refractive meter optical fibre probe Download PDFInfo
- Publication number
- CN2653498Y CN2653498Y CN 200320109402 CN200320109402U CN2653498Y CN 2653498 Y CN2653498 Y CN 2653498Y CN 200320109402 CN200320109402 CN 200320109402 CN 200320109402 U CN200320109402 U CN 200320109402U CN 2653498 Y CN2653498 Y CN 2653498Y
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- CN
- China
- Prior art keywords
- optical fiber
- fiber
- sapphire crystal
- refraction
- probe
- 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
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to an optical fiber probe for a refractometer, which comprises a light source, an exploration fiber, a reference fiber, a refraction fiber, a sapphire crystal, a light and electricity switcher, a temperature sensor and a shell body. Wherein, the light source is connected with the exploration fiber and the reference fiber, and the exploration fiber and the refraction fiber are connected with the upper surface of the sapphire crystal. The other ends of the reference fiber and the refraction fiber are connected with the light and electricity switcher. The sapphire crystal and the temperature sensor are arranged on the front end of the shell body. When in measuring, the probe is immerged into the measured solution, and then the utility model can automatically hold measuring, temperature compensation, automatic calibration and digital showing, thereby, the utility model has the advantages of simple structure, convenient use, rapid measuring speed and high precision.
Description
Technical field
The utility model relates to physico-optical instrument, particularly a kind of refractometer fibre-optical probe.
Background technology
Refractometer is used for the measurement to various solution refractive indexes, through converting, can obtain the concentration of detected solution, the technical parameter that becomes to grade, thereby be widely used in fields such as food, medicine, biology, petrochemical industry.The desk-top relatively refractometer of hand-held refractometer, its advantage is that physical construction is simple, and is easy to carry, can realize quick measurement.But existing hand-held refractometer adopts visual method to measure, and error is bigger; And, calibration process more complicated before measuring, surround lighting to the scene during measurement is had relatively high expectations, instrument does not have the temperature zero offset capability, when measuring the solution concentration of different temperatures, the temperature of solution need be measured again, and then, its concentration value could be obtained according to the form computation of table lookup that weaves.In a word, whole measuring process is also more loaded down with trivial details.
Summary of the invention
The utility model can immerse solution, the digital refractometer fibre-optical probe that shows in order to solve existing technical matterss such as existing hand-held refractometer measuring error is big and provide.
According to above-mentioned purpose, the utility model provides a kind of refractometer fibre-optical probe, comprises light source, detection optical fiber, reference optical fiber, refraction optical fiber, sapphire crystal, photoelectric commutator, temperature sensor and housing; Wherein light source is connected with detection optical fiber, reference optical fiber, and detection optical fiber is connected with sapphire crystal upper surface with refraction optical fiber, and the other end of reference optical fiber, refraction optical fiber is connected with photoelectric commutator, and sapphire crystal and temperature sensor are installed in the front end of housing.
Said apparatus, wherein optical fiber is made by the plastic optical fiber with big numerical aperture.
Said apparatus wherein carries out bonding with index-matching fluid between optical fiber and the sapphire crystal.
The utility model has been owing to taked above technical measures, therefore have simple in structure, easy to use, measure fast, advantage of high precision.
Description of drawings
Accompanying drawing is structural representation of the present utility model and refractometer fundamental diagram thereof.
Embodiment
As shown in drawings, a kind of refractometer fibre-optical probe comprises LED source 1, the detection optical fiber of making by plastic optical fiber 2, reference optical fiber 3, refraction optical fiber 4 with big numerical aperture, the sapphire crystal 5, the photoelectric commutator 6 of integrated interference filter, temperature sensor 7 and housing 8; Wherein light source 1 is connected with detection optical fiber 2, reference optical fiber 3, detection optical fiber 2 is connected with the upper surface of identical sharp angle with the sapphire crystal 5 with refraction optical fiber 4, reference optical fiber 3 is connected with photoelectric commutator 6 with the other end of refraction optical fiber 4, and above parts are fixed in the housing 8 with epoxy resin; Wherein the upper surface of sapphire crystal 5 is bonded in the front end of housing 8 with index-matching fluid, and temperature sensor 7 usefulness epoxy resin are fixed on housing 8 front ends.Fibre-optical probe is connected with the refractometer circuit part: light source 1 is connected with driving circuit 10, reference optical fiber 3, the refraction optical fiber 4, photoelectric commutator 6 and temperature sensor 7 be connected with data processing circuit 11.Also have data processing circuit 11 to be connected with LCD 12, control panel 13 is connected with driving circuit 10, data processing circuit 11, LCD 12 respectively.
During measurement, to pop one's head in earlier and immerse in the detected solution 9, press the relevant button on the control panel 13 then, driving circuit 10 driving light sources 1 send two-way light, one the tunnel enters detection optical fiber 2 as surveying light after coupling, another road enters reference optical fiber 3 as reference light after coupling, reference light converts electric signal input data processing circuit 11 to through photoelectric commutator 6, is used to monitor the variation of light source 1.Survey light on the oblique interphase that is mapped to sapphire crystal 5 and detected solution 9 of detection optical fiber 2, its reflected light enters photoelectric commutator 6 through refraction optical fiber 4 again, and data processing circuit 11 becomes the refractive index value of detected solution 9 or concentration value to show reading on LCD 12 the reflected light electrical signal conversion.Simultaneously, temperature sensor 7 will record solution 9 temperature, convert corresponding electric signal input data processing circuit 11 to, and the refractive index value or the concentration value of detected solution 9 carried out the temperature compensation correction.
During calibration, sapphire crystal 5 surface is carefully cleaned up, guarantee not have any foreign material and impression after, again probe is inserted in the pure water, press selection and reading button on the control panel 13 simultaneously, the instrument plug-in can be finished calibration operation automatically, and is easy to operate.
Claims (3)
1. a refractometer fibre-optical probe is characterized in that: comprise light source (1), detection optical fiber (2), reference optical fiber (3), refraction optical fiber (4), sapphire crystal (5), photoelectric commutator (6), temperature sensor (7) and housing (8); Wherein light source (1) is connected with detection optical fiber (2), reference optical fiber (3), detection optical fiber (2) is connected with the upper surface of sapphire crystal (5) with refraction optical fiber (4), reference optical fiber (3) is connected with photoelectric commutator (6) with the other end of refraction optical fiber (4), and sapphire crystal (5) and temperature sensor (7) are installed in housing 8 front ends.
2. probe according to claim 1 is characterized in that: wherein optical fiber (2), (3), (4) are made by the plastic optical fiber with big numerical aperture.
3. probe according to claim 1 is characterized in that: wherein bonding with index-matching fluid between optical fiber (2), (4) and the sapphire crystal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109402 CN2653498Y (en) | 2003-10-30 | 2003-10-30 | Refractive meter optical fibre probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109402 CN2653498Y (en) | 2003-10-30 | 2003-10-30 | Refractive meter optical fibre probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2653498Y true CN2653498Y (en) | 2004-11-03 |
Family
ID=34343181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320109402 Expired - Fee Related CN2653498Y (en) | 2003-10-30 | 2003-10-30 | Refractive meter optical fibre probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2653498Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101755193B (en) * | 2007-08-13 | 2011-09-28 | 波音公司 | Fiber optic fuel detection system |
| CN107957407A (en) * | 2017-11-22 | 2018-04-24 | 盘锦雨源新创意开发推广有限公司 | A kind of sonde-type digital display refractometer |
-
2003
- 2003-10-30 CN CN 200320109402 patent/CN2653498Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101755193B (en) * | 2007-08-13 | 2011-09-28 | 波音公司 | Fiber optic fuel detection system |
| CN107957407A (en) * | 2017-11-22 | 2018-04-24 | 盘锦雨源新创意开发推广有限公司 | A kind of sonde-type digital display refractometer |
| CN107957407B (en) * | 2017-11-22 | 2023-12-26 | 盘锦雨源新创意开发推广有限公司 | Probe type digital display refractometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |