CN202995055U - Optical fiber sensing device for sensing presence of liquid - Google Patents
Optical fiber sensing device for sensing presence of liquid Download PDFInfo
- Publication number
- CN202995055U CN202995055U CN 201220581249 CN201220581249U CN202995055U CN 202995055 U CN202995055 U CN 202995055U CN 201220581249 CN201220581249 CN 201220581249 CN 201220581249 U CN201220581249 U CN 201220581249U CN 202995055 U CN202995055 U CN 202995055U
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- Prior art keywords
- optical fiber
- housing
- substrate
- sensing device
- liquid
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Abstract
The utility model discloses an optical fiber sensing device for sensing the presence of liquid. The optical fiber sensing device comprises a housing, a substrate, a first optical fiber and a second optical fiber, wherein the housing is a square housing which is dust-proof and liquid-permeable, the substrate is arranged inside the housing, one end of the first optical fiber penetrates the housing from outside to inside and the end portion of the first optical fiber is fixed on the substrate through a first epoxy resin adhesive, one end of the second optical fiber penetrates the housing from outside to inside and the end portion of the second optical fiber is fixed on the substrate through a second epoxy resin adhesive, a gap is formed between the end head of the first optical fiber which is located inside the housing and the end head of the second optical fiber, the end head of the first optical fiber which is located inside the housing and the end head of the second optical fiber are aligned and the first optical fiber and the second optical fiber are symmetrically arranged, and the end head of the second optical fiber located outside the housing is connected with a test device used for testing whether an optical signal changes or not. The optical fiber sensing device disclosed by the utility model solves the problems of a quite small number of monitoring event points and non-reusability in the existing sensing cable connector box, and simultaneously, the device is light in weight and low in cost.
Description
Technical field
The utility model relates to a kind of fibre-optical sensing device, especially relates to the fibre-optical sensing device whether a kind of perception liquid exists.
Background technology
At present, the sensor of whether intaking in existing perceived light cable connector box be that after utilizing water inlet, polymer water uptake expansion material bending optical fiber causes bending loss of optical fiber to complete, but the method monitoring case point is few, can not reuse, thereby limit its popularization.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, the fibre-optical sensing device that provides a kind of perception liquid whether to exist, it is simple in structure, reasonable in design and result of use is good, can effectively solve existing perceived light cable connector box whether intake adopt polymer water uptake expansion material bending optical fiber cause bending loss of optical fiber complete monitoring exist the monitoring case point few, can not reusable problem, simultaneously lightweight, cost is low.
for achieving the above object, the technical solution adopted in the utility model is: the fibre-optical sensing device whether a kind of perception liquid exists, it is characterized in that: comprise housing, substrate, the first optical fiber and the second optical fiber, described housing is one dustproof and can see through the square casing of liquid, described substrate is a rectangular slab, described substrate is arranged on the inside of housing, one end ecto-entad of described the first optical fiber penetrates housing and the end is fixed on substrate by the first epoxy resin adhesive, the other end of described the first optical fiber is positioned at the outside of housing, one end ecto-entad of described the second optical fiber penetrates housing and the end is fixed on substrate by the second epoxy resin adhesive, the other end of described the second optical fiber is positioned at the outside of housing, gapped between the termination of the termination of the first optical fiber of described enclosure interior and the second optical fiber, the termination that is positioned at the termination of the first optical fiber of described enclosure interior and the second optical fiber aligns and described the first optical fiber and the second optical fiber are symmetrical arranged, the end that is positioned at the second optical fiber of described outside is connected with the proving installation that whether changes for the test light signal.
The fibre-optical sensing device whether above-mentioned a kind of perception liquid exists is characterized in that: described proving installation is optical time domain reflectometer or light source-light power meter.
The utility model compared with prior art has the following advantages:
1, the utility model is simple in structure, and is reasonable in design, and result of use is good.
When 2, the utility model has water or other liquid to enter through housing, water or liquid can be filled in the gap that the termination of the termination of the first optical fiber and the second optical fiber forms, thereby make the light signal of propagating in the first optical fiber and the second optical fiber that variation occur, whether the second optical fiber that the end of the second optical fiber by being positioned at outside connects can monitor this variation, have water or liquid to enter in housing thereby determine.
3, the utility model can effectively solve existing perceived light cable connector box whether intake adopt polymer water uptake expansion material bending optical fiber cause bending loss of optical fiber complete monitoring exist the monitoring case point few, can not reusable problem, simultaneously lightweight, cost is low, easy construction.
In sum, fibre-optical sensing device of the present invention is simple in structure, lightweight, and cost is low, has application prospect preferably.
Below by drawings and Examples, the utility model is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals:
1-housing; 2-1-first optical fiber; 2-2-second optical fiber;
3-substrate; 4-1-first epoxy resin adhesive; 4-2-second epoxy resin adhesive;
5-gap; 6-proving installation.
Embodiment
as shown in Figure 1, the utility model comprises housing 1, substrate 3, the first optical fiber 2-1 and the second optical fiber 2-2, described housing 1 is one dustproof and can see through the square casing of liquid, described substrate 3 is a rectangular slab, described substrate 3 is arranged on the inside of housing 1, the end ecto-entad of described the first optical fiber 2-1 penetrates housing 1 and the end is fixed on substrate 3 by the first epoxy resin adhesive 4-1, the other end of described the first optical fiber 2-1 is positioned at the outside of housing 1, the end ecto-entad of described the second optical fiber 2-2 penetrates housing 1 and the end is fixed on substrate 3 by the second epoxy resin adhesive 4-2, the other end of described the second optical fiber 2-2 is positioned at the outside of housing 1, between the termination of the termination of the first optical fiber 2-1 of described housing 1 inside and the second optical fiber 2-2 gapped 5, the termination that is positioned at the termination of the first optical fiber 2-1 of described housing 1 inside and the second optical fiber 2-2 aligns and described the first optical fiber 2-1 and the second optical fiber 2-2 are symmetrical arranged, the end that is positioned at the second optical fiber 2-2 of described housing 1 outside is connected with the proving installation 6 that whether changes for the test light signal.
In the present embodiment, preferred, described proving installation 6 is optical time domain reflectometer or light source-light power meter.
Principle of work of the present utility model is: when having water or other liquid to enter through housing 1, water or liquid can be filled in the gap 5 that the termination of the termination of the first optical fiber 2-1 and the second optical fiber 2-2 forms, thereby make the light signal of propagating in the first optical fiber 2-1 and the second optical fiber 2-2 that variation occur, disappearance as Fresnel reflection, whether the second optical fiber 2-2 that the end of the second optical fiber 2-2 by being positioned at housing 1 outside connects can monitor this variation, have water or liquid to enter in housing 1 thereby determine.
The above; it is only preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment does, all still belong in the protection domain of technical solutions of the utility model.
Claims (2)
1. fibre-optical sensing device whether perception liquid exists, it is characterized in that: comprise housing (1), substrate (3), the first optical fiber (2-1) and the second optical fiber (2-2), described housing (1) is one dustproof and can see through the square casing of liquid, described substrate (3) is a rectangular slab, described substrate (3) is arranged on the inside of housing (1), one end ecto-entad of described the first optical fiber (2-1) penetrates housing (1) and the end is fixed on substrate (3) by the first epoxy resin adhesive (4-1), the other end of described the first optical fiber (2-1) is positioned at the outside of housing (1), one end ecto-entad of described the second optical fiber (2-2) penetrates housing (1) and the end is fixed on substrate (3) by the second epoxy resin adhesive (4-2), the other end of described the second optical fiber (2-2) is positioned at the outside of housing (1), be positioned between the termination of the termination of inner the first optical fiber (2-1) of described housing (1) and the second optical fiber (2-2) gapped (5), the termination that is positioned at the termination of inner the first optical fiber (2-1) of described housing (1) and the second optical fiber (2-2) aligns and described the first optical fiber (2-1) and the second optical fiber (2-2) are symmetrical arranged, the end that is positioned at outside the second optical fiber (2-2) of described housing (1) is connected with the proving installation (6) that whether changes for the test light signal.
2. the fibre-optical sensing device that whether exists of a kind of perception liquid according to claim 1, it is characterized in that: described proving installation (6) is optical time domain reflectometer or light source-light power meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220581249 CN202995055U (en) | 2012-11-06 | 2012-11-06 | Optical fiber sensing device for sensing presence of liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220581249 CN202995055U (en) | 2012-11-06 | 2012-11-06 | Optical fiber sensing device for sensing presence of liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202995055U true CN202995055U (en) | 2013-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220581249 Expired - Fee Related CN202995055U (en) | 2012-11-06 | 2012-11-06 | Optical fiber sensing device for sensing presence of liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202995055U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107554467A (en) * | 2017-07-03 | 2018-01-09 | 谢志辉 | Automobile water falling escape system and photoelectric component thereof |
| CN107640117A (en) * | 2017-07-17 | 2018-01-30 | 谢志辉 | Escape system for automobile falling into water and ultrasonic member thereof |
| CN110672219A (en) * | 2019-09-30 | 2020-01-10 | 凯德仪表(深圳)有限公司 | High-precision industrial digital display thermometer |
-
2012
- 2012-11-06 CN CN 201220581249 patent/CN202995055U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107554467A (en) * | 2017-07-03 | 2018-01-09 | 谢志辉 | Automobile water falling escape system and photoelectric component thereof |
| CN107640117A (en) * | 2017-07-17 | 2018-01-30 | 谢志辉 | Escape system for automobile falling into water and ultrasonic member thereof |
| CN110672219A (en) * | 2019-09-30 | 2020-01-10 | 凯德仪表(深圳)有限公司 | High-precision industrial digital display thermometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131106 |