CN102042843A - Filter screen detection device - Google Patents
Filter screen detection device Download PDFInfo
- Publication number
- CN102042843A CN102042843A CN2009100242527A CN200910024252A CN102042843A CN 102042843 A CN102042843 A CN 102042843A CN 2009100242527 A CN2009100242527 A CN 2009100242527A CN 200910024252 A CN200910024252 A CN 200910024252A CN 102042843 A CN102042843 A CN 102042843A
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- China
- Prior art keywords
- optical fiber
- screen pack
- filter screen
- fiber
- dust
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- 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.)
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Abstract
The invention discloses a filter screen detection device, which is characterized in that: an optical fiber substrate is provided with a fiber core with a relatively high refractive index; the periphery of the fiber core is provided with a coating with a relatively low refractive index; a part of the coating is removed from a small section and a D-shaped optical fiber of which the fiber core is close to the surface of the optical fiber is attached to a fiber screen; and an elongation line of the optical fiber is connected with a detection instrument. When sundries such as dust and the like are attached to the surface of the D-shaped optical fiber, an optical signal transmitted in the cable core is influenced and a part of the optical signal is lost in the evanescent wave form, so that the detection instrument reflects the loss of the optical signal. Along with the increase of the sundries such as the dust and the like, loss of the optical signal is increased gradually, so that the filter screen is detected. The filter screen detection device has a simple and practical structure and low operating and using costs, can be used for detecting the filter screen for the sundries such as the dust, fibers and the like as well as filter screens for toxic and harmful substances such as acid mist and the like, and is suitable for popularization.
Description
Technical field
The present invention relates to a kind of screen pack pick-up unit, a kind of device that utilizes optical fiber to detect the screen pack state of saying so more specifically.
Background technology
The occasion that a lot of use screen packs are arranged in people's life and in the industry, as the air-conditioning in the life, air cleaner etc., need screen pack that foreign material such as dust in air, fiber fines are filtered, industrial processing as Clean room, waste gas, waste water, all need screen pack, the foreign material on screen pack run up to a certain degree just needs cleaning, otherwise can cause resistance increase, consumption rate rising, energy utilization rate to reduce, as untimely cleaning, even cause the damage of equipment.
The special flat 7-151173 of nineteen ninety-five Japan's special permission designation discloses a kind of air conditioner, it is provided with illuminating part in the one side of screen pack, face in addition in screen pack is provided with light accepting part, utilize the variation that sees through screen pack light to be transferred to light quantity detecting element and judegment part, last testing result shows whether need to be serviced, but this transmission-type of screen pack detects its sensor and very inconvenience is installed and has the problem of making dirty easily or damaging, in addition, many high efficiency particulate air filters are just light tight, can't use so this transmission-type detects at all.
Summary of the invention
The object of the present invention is to provide a kind of screen pack pick-up unit, this kind screen pack pick-up unit mainly relies on optical fiber sensing technology, and it is convenient not only to settle, and is easy to carry out the multiple spot detection.
For realizing purpose of the present invention, a kind of screen pack pick-up unit that the present invention discloses, it is characterized in that, the high slightly fibre core of refractive index is arranged on optical fiber, in the periphery of fibre core is the low slightly covering of refractive index, with a bit ofly remove the part covering, make fibre core near the D type optical fiber on the surface of optical fiber attached on the screen pack, the extended line of optical fiber connects detecting instrument.As dust and other impurities during attached to D type optical fiber surface, can be to the light signal generating influence of transmitting in the fibre core, make of the form loss of the part of light signal with evanescent wave, thereby on detecting instrument, reflect, along with increasing of dust and other impurities, the loss of light signal can progressively increase, thereby reaches the detection to screen pack.
Described D type optical fiber is embedded in the screen pack.
In screen pack, be mounted with a plurality of D type optical fiber.
As can be seen, this screen pack pick-up unit has simple and practical, not only can the screen pack that generally is used for foreign material such as dust, fiber be detected, some are used for the screen pack of poisonous and harmful substance, also can detect as acid mist etc., and cost is low, has promotional value.
Should be appreciated that the general introduction of front and following detailed description all are exemplary, rather than limitation of the present invention.
Description of drawings:
Fig. 1 is the cross sectional representation according to D type optical fiber of the present invention.
Fig. 2 is according to pick-up unit synoptic diagram of the present invention.
Among the figure:
1-optical fiber, 2-fiber core, 3-fibre cladding, 4-screen pack, 5-detecting instrument, 6-D type optical fiber, 7-dust.
Embodiment
Fig. 2 is according to screen pack pick-up unit synoptic diagram of the present invention.The high slightly fiber core of refractive index 2 is arranged in the optical fiber 1, in fibre core 2 peripheries are fibre claddings 3, the D type optical fiber 6 that removes the part covering is embedded in the screen pack 4, screen pack 4 is when work, have dust 7 removes the part covering attached to D type optical fiber 6 surface, this is to the light signal generating influence of transmission in the fibre core 2, make of the form loss of the part of light signal with evanescent wave, thereby on detecting instrument 5, reflect, along with increasing of dust 7 foreign material such as grade, the loss of light signal can progressively increase, thereby reaches the detection to screen pack 4.
Can find out from above-mentioned introduction, as can be seen, this screen pack pick-up unit has simple and practical, not only can the screen pack that generally is used for foreign material such as dust, fiber be detected, some are used for the screen pack of poisonous and harmful substance, also can detect as acid mist etc., operation and use cost are low, are suitable for promoting and using.
Certainly, the present invention is not limited to the embodiment that the front is introduced, and we can replace whole device with another kind of equivalent arrangements, and do not exceed scope of the present invention.
Claims (3)
1. screen pack pick-up unit, it is characterized in that, the high slightly fibre core of refractive index is arranged on optical fiber, in the periphery of fibre core is the low slightly covering of refractive index, with a bit ofly remove the part covering, make fibre core near the D type optical fiber on the surface of optical fiber attached on the screen pack, the extended line of optical fiber connects detecting instrument.
2. a kind of screen pack pick-up unit according to claim 1 is characterized in that, described D type optical fiber is embedded in the screen pack.
3. a kind of screen pack pick-up unit according to claim 1 is characterized in that, is mounted with a plurality of D type optical fiber in screen pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100242527A CN102042843A (en) | 2009-10-12 | 2009-10-12 | Filter screen detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100242527A CN102042843A (en) | 2009-10-12 | 2009-10-12 | Filter screen detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102042843A true CN102042843A (en) | 2011-05-04 |
Family
ID=43909197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100242527A Pending CN102042843A (en) | 2009-10-12 | 2009-10-12 | Filter screen detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102042843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2484378A (en) * | 2010-09-29 | 2012-04-11 | Gen Electric | Electrical machine component monitoring system and method |
| CN102798611A (en) * | 2011-05-26 | 2012-11-28 | 中国科学院上海微系统与信息技术研究所 | Method for measuring dielectric loss by utilizing pulse response time of electromagnetic evanescent wave irradiance |
-
2009
- 2009-10-12 CN CN2009100242527A patent/CN102042843A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2484378A (en) * | 2010-09-29 | 2012-04-11 | Gen Electric | Electrical machine component monitoring system and method |
| US8422008B2 (en) | 2010-09-29 | 2013-04-16 | General Electric Company | Electrical machine component monitoring system and method |
| GB2484378B (en) * | 2010-09-29 | 2017-03-15 | Gen Electric | Electrical machine component monitoring system and method |
| CN102798611A (en) * | 2011-05-26 | 2012-11-28 | 中国科学院上海微系统与信息技术研究所 | Method for measuring dielectric loss by utilizing pulse response time of electromagnetic evanescent wave irradiance |
| CN102798611B (en) * | 2011-05-26 | 2014-07-30 | 中国科学院上海微系统与信息技术研究所 | Method for measuring dielectric loss by utilizing pulse response time of electromagnetic evanescent wave irradiance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110504 |