CN103809208A - Optical fiber sensing device for sensing existence of liquid - Google Patents
Optical fiber sensing device for sensing existence of liquid Download PDFInfo
- Publication number
- CN103809208A CN103809208A CN201210438808.9A CN201210438808A CN103809208A CN 103809208 A CN103809208 A CN 103809208A CN 201210438808 A CN201210438808 A CN 201210438808A CN 103809208 A CN103809208 A CN 103809208A
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- optical fiber
- housing
- substrate
- sensing device
- liquid
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Abstract
The invention discloses an optical fiber sensing device for sensing the existence of liquid. The optical fiber sensing device comprises a housing, a substrate, a first optical fiber, and a second optical fiber. The housing is a square dustproof and liquid-permeable housing. The substrate is installed 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 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 second epoxy resin adhesive. A gap is formed between the end head of the first optical fiber inside the housing and the end head of the second optical fiber inside the housing. The end head of the first optical fiber inside the housing and the end head of the second optical fiber inside the housing are aligned and the first optical fiber and the second optical fiber are symmetrically arranged. The end head of the second optical fiber outside the housing is connected with a test device used for testing whether an optical signal changes or not. The optical fiber sensing device solves problems of a quite small number of monitoring event points and non-reusability in a conventional sensing cable connector box. Additionally, the optical fiber sensing device is light in weight and low in cost.
Description
Technical field
The present invention relates to a kind of fibre-optical sensing device, especially relate 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, is to utilize after water inlet, and 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.
Summary of the invention
The object of the invention 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 monitoring case point few, can not reusable problem, simultaneously lightweight, cost is low.
For achieving the above object, the technical solution used in the present invention 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 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 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 first optical fiber of described enclosure interior and the termination of the second optical fiber, be positioned at the termination of the first optical fiber of described enclosure interior and the termination of 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 whether changing for 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 present invention compared with prior art has the following advantages:
1, the present invention is simple in structure, reasonable in design, and result of use is good.
2, when the present invention has water or other liquid to enter through housing, water or liquid can be filled in the gap of the termination of the first optical fiber and the formation of the termination of the second optical fiber, thereby make the light signal of propagating in the first optical fiber and the second optical fiber that variation occur, by be positioned at outside the second optical fiber end connect the second optical fiber can monitor this variation, whether have water or liquid to enter thereby determine in housing.
3, the present invention 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 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 good application prospect.
Below by drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Description of reference numerals:
1-housing; 2-1-the first optical fiber; 2-2-the second optical fiber;
3-substrate; 4-1-the first epoxy resin adhesive; 4-2-the second epoxy resin adhesive;
5-gap; 6-proving installation.
Embodiment
As shown in Figure 1, the present invention includes 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 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 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 first optical fiber 2-1 of described housing 1 inside and the termination of the second optical fiber 2-2 gapped 5, be positioned at the termination of the first optical fiber 2-1 of described housing 1 inside and the termination of 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 whether changing for 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 invention is: in the time having water or other liquid to enter through housing 1, water or liquid can be filled in the gap 5 of the termination of the first optical fiber 2-1 and the formation of the termination of the second optical fiber 2-2, thereby make the light signal of propagating in the first optical fiber 2-1 and the second optical fiber 2-2 that variation occur, as the disappearance of Fresnel reflection, by be positioned at housing 1 outside the second optical fiber 2-2 end connect the second optical fiber 2-2 can monitor this variation, whether have water or liquid to enter thereby determine in housing 1.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure transformation of above embodiment being done according to the technology of the present invention essence, all still belongs in the protection domain of technical solution of the present invention.
Claims (2)
1. the 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 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 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 inner termination of the first optical fiber (2-1) of described housing (1) and the termination of the second optical fiber (2-2) gapped (5), be positioned at the inner termination of the first optical fiber (2-1) of described housing (1) and the termination of 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) whether changing for test light signal.
2. the fibre-optical sensing device that whether a kind of perception liquid according to claim 1 exists, 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 |
|---|---|---|---|
| CN201210438808.9A CN103809208A (en) | 2012-11-06 | 2012-11-06 | Optical fiber sensing device for sensing existence of liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210438808.9A CN103809208A (en) | 2012-11-06 | 2012-11-06 | Optical fiber sensing device for sensing existence of liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103809208A true CN103809208A (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210438808.9A Pending CN103809208A (en) | 2012-11-06 | 2012-11-06 | Optical fiber sensing device for sensing existence of liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103809208A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450294A (en) * | 2015-12-11 | 2016-03-30 | 国家电网公司 | Accumulated water monitoring apparatus and accumulated water monitoring method for cable joint box |
| CN108267403A (en) * | 2018-01-10 | 2018-07-10 | 重庆大学 | A kind of fibre-optical sensing device and its manufacturing method for being used to monitor bridge pier surrounding soil erodsion loss |
| CN110048767A (en) * | 2019-04-09 | 2019-07-23 | 安徽大学 | Optical cable connecting box and its monitoring method |
-
2012
- 2012-11-06 CN CN201210438808.9A patent/CN103809208A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450294A (en) * | 2015-12-11 | 2016-03-30 | 国家电网公司 | Accumulated water monitoring apparatus and accumulated water monitoring method for cable joint box |
| CN108267403A (en) * | 2018-01-10 | 2018-07-10 | 重庆大学 | A kind of fibre-optical sensing device and its manufacturing method for being used to monitor bridge pier surrounding soil erodsion loss |
| CN108267403B (en) * | 2018-01-10 | 2020-10-27 | 重庆大学 | Optical fiber sensing device for monitoring erosion loss of soil around pier and manufacturing method thereof |
| CN110048767A (en) * | 2019-04-09 | 2019-07-23 | 安徽大学 | Optical cable connecting box and its monitoring method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |