CN103033487A - Device for detecting gas humidity with infrared light - Google Patents
Device for detecting gas humidity with infrared light Download PDFInfo
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- CN103033487A CN103033487A CN2012105809719A CN201210580971A CN103033487A CN 103033487 A CN103033487 A CN 103033487A CN 2012105809719 A CN2012105809719 A CN 2012105809719A CN 201210580971 A CN201210580971 A CN 201210580971A CN 103033487 A CN103033487 A CN 103033487A
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Abstract
The invention discloses a device for detecting gas humidity with infrared light. The device comprises an upper cover, a lower cover and a control device, wherein a hole I is formed at the lower part of the upper cover; a hole II is formed at the upper part of the upper cover; the upper cover is in sealing connection with the lower cover by fasteners; a cavity is formed in upper cover and the lower cover; light pipes are arranged in the cavity; the two ends of the light pipes are connected with optical fibers; the optical fibers are connected with the control device; the light pipes are in sealing connection with the upper cover; a plurality of holes III are formed in the light pipes; and the control device is internally provided with an emitter for emitting the infrared light and a detector for receiving the infrared light. Test gas enters the light pipes from the holes III; moisture in the test gas absorbs light wave; and the light intensity is reduced. The device measures the gas humidity according to light intensity variations detected by the control device; the detection precision is high; the measuring range is large; the hole I and the hole II are positioned on the lower right side and the upper left side of the upper cover respectively, so that a gas passing route is extended, the test gas can sufficiently enter the light pipes, the infrared light can be absorbed sufficiently, and the testing precision is improved; and the device is simple in structure and long in service life.
Description
Technical field
The present invention relates to a kind of device that detects gas humidity, be specifically related to a kind of device with the infrared light detection gas humidity.
Background technology
Moisture in the gas humidity reflection gas, it is on the impact of our health, life, work our imagination head and shoulders above.People also more and more pay attention to the detection of gas humidity.The present domestic method that multiple detection gas humidity is arranged, as: dynamic method, static method, dew point method, dried wet method and various electronic sensor methods etc., these methods are often used in the larger gaseous environment of humidity, but their resolution is lower, and precision is lower.In addition, also have electrolytic sensors method, humidity sensor method etc., the electrolytic sensors method can only the very low gas humidity of measuring moisture, surveys just easy damage equipment of normal air, and measurement range is lower, and range is little.The used humidity-sensitive element resistance tocrocking of humidity sensor method is poor, places environment to be measured, and is very easily contaminated, less stable.Comprehensive Correlation, there is certain limitation in the existing method of testing of Present Domestic.
Summary of the invention
The present invention is exactly in order to solve the prior art above shortcomings, and a kind of device with the infrared light detection gas humidity is provided.Light pipe I, light pipe II are set in the chamber, have the test gas of certain humidity to enter light pipe, hydrone can absorb infrared light, hydrone is more, and the infrared light of absorption is also more, comes the determination test gas humidity according to the degree of infrared light decay, the method accuracy of detection is high, and range is large, long service life.
The objective of the invention is to adopt following technical proposals to realize:
A kind of device with the infrared light detection gas humidity, comprise loam cake, lower cover and control device, the loam cake bottom is provided with hole I, top is provided with hole II, loam cake and lower cover by securing member be tightly connected, the inner chamber that forms, be provided with light pipe in the chamber, the light pipe two ends are connected with optical fiber, optical fiber is connected with control device, light pipe and loam cake are tightly connected, and light pipe is provided with some hole III, are provided with the transmitter of emission infrared light and the detector of reception infrared light in the described control device.
Be provided with light pipe I and light pipe II in the described chamber, light pipe I is connected by optical fiber II with light pipe II, and light pipe I and light pipe II are connected to control device by optical fiber I and optical fiber III respectively, and light pipe I and light pipe II and loam cake are tightly connected.
Described light pipe I and light pipe II are collimating apparatus.
Described loam cake and the lower cover place of being tightly connected are provided with fluid sealant or O-ring seal.
Described hole II is located at the upper left side of loam cake, and hole I is located at the lower right side of loam cake.
Described securing member is screw or bolt.
Principle of work of the present invention: a kind of device with the infrared light detection gas humidity, it comprises loam cake, lower cover and control device, on be covered with hole I, hole II, loam cake and lower cover are connected to form the chamber by securing member, and seal with O-ring seal, place the light pipe I in the chamber to be connected by optical fiber II with light pipe II, light pipe I and light pipe II receive control device by optical fiber I and optical fiber III respectively, the part that light pipe I and light pipe II insert loam cake is sealed by encapsulant, light pipe I and light pipe II are provided with some hole III, and test gas can enter.Test gas is entered in the chamber by hole I, and enters light pipe I, light pipe II by some hole III.There is the test gas of certain humidity to enter light pipe, hydrone can absorb infrared light, and hydrone is more, and the infrared light of absorption is also more, degree according to the infrared light decay is come the determination test gas humidity, and the present invention has opened up the new method of using the infrared light detection gas humidity.The infrared light of emission imports light pipe into through optical fiber I in the control device, and the light wave that the moisture absorption light pipe I in the test gas and light pipe II are interior causes intensity variation, and the intensity variation that records according to control device is judged the humidity of test gas.
Advantage of the present invention is: 1, according to intensity variation, and mensurated gas composition humidity, accuracy of detection is high, and range is large; 2, hole I, hole II lay respectively at lower right side and the upper left side of loam cake, prolong the route that gas passes through, and warranty test gas fully enters light pipe, fully absorbs infrared light, further improves measuring accuracy.3, simple in structure, long service life.
Description of drawings
Fig. 1 is the structural drawing of embodiment of the present invention;
Wherein, 1. control device, 2. optical fiber I, 3. encapsulant, 4. loam cake, 5. light pipe I, 6. hole III, 7. chamber, 8. hole I, 9. optical fiber II, 10. lower cover, 11. optical fiber III, 12. hole II, 13. light pipe II, 14. securing members, 15. O-ring seals.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Embodiment 1:
Device with the infrared light detection gas humidity, comprise loam cake 4, lower cover 10 and control device 1, loam cake 4 bottoms are provided with hole I8, top is provided with hole II12, loam cake 4 and lower cover 10 by securing member 14 be tightly connected, the inner chamber 7 that forms, be provided with light pipe in the chamber 7, the light pipe two ends are connected with optical fiber, optical fiber is connected with control device 1, light pipe and loam cake 4 are sealed and matched, and light pipe is provided with some hole III6, are provided with the transmitter of emission infrared light and the detector of reception infrared light in the control device.Being provided with two light pipes in the chamber 7 is light pipe I5 and light pipe II13, light pipe I5 is connected by optical fiber II9 with light pipe II13, light pipe I5 and light pipe II13 receive control device 1 by optical fiber I2 and optical fiber III11 respectively, light pipe I5 and light pipe II13 insert the coupling part of loam cake 4 by encapsulant 3 sealings, light pipe I5 and light pipe II13 are provided with some hole III6, and test gas can enter.
Test gas is entered in the chamber 7 by hole I8, and enters light pipe I5, light pipe II13 by some hole III6, and the infrared light of control device 1 interior emission imports light pipe I5, optical fiber II9, light pipe II13 into through optical fiber I2, imports control device 1 into by optical fiber III11 again.In the conductive process, test gas absorbs the interior light wave of light pipe I5 and light pipe II13, causes intensity variation, and the intensity variation that records according to control device 1 is judged the humidity of test gas.
Embodiment 2:
On the basis of embodiment 1, be provided with 1 light pipe in the chamber 7, control device 1 is received by optical fiber in the light pipe two ends.Other do not repeat them here with reference to embodiment 1.
Embodiment 3:
According to actual needs, be provided with the light pipe of a plurality of series connection in the chamber 7, the whole story, control device 1 was received by optical fiber in two ends.Other do not repeat them here with reference to embodiment 1.
Although above-mentioned by reference to the accompanying drawings to the invention embodiment be described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (6)
1. device with the infrared light detection gas humidity, it is characterized in that, comprise loam cake, lower cover and control device, the loam cake bottom is provided with hole I, top is provided with hole II, loam cake and lower cover by securing member be tightly connected, the inner chamber that forms, be provided with light pipe in the chamber, the light pipe two ends are connected with optical fiber, and optical fiber is connected with control device, and light pipe and loam cake are tightly connected, light pipe is provided with some hole III, is provided with the transmitter of emission infrared light and the detector of reception infrared light in the described control device.
2. a kind of device with the infrared light detection gas humidity as claimed in claim 1, it is characterized in that, be provided with light pipe I and light pipe II in the described chamber, light pipe I is connected by optical fiber II with light pipe II, light pipe I and light pipe II are connected to control device by optical fiber I and optical fiber III respectively, and light pipe I and light pipe II and loam cake are tightly connected.
3. such as claim 1 or 2 described a kind of devices with the infrared light detection gas humidity, it is characterized in that, described light pipe I and light pipe II are collimating apparatus.
4. such as claim 1 or 2 described a kind of devices with the infrared light detection gas humidity, it is characterized in that, described loam cake and the lower cover place of being tightly connected are provided with fluid sealant or O-ring seal.
5. a kind of device with the infrared light detection gas humidity as claimed in claim 1 is characterized in that, described hole II is located at the upper left side of loam cake, and hole I is located at the lower right side of loam cake.
6. such as claim 1 or 2 described a kind of devices with the infrared light detection gas humidity, it is characterized in that, described securing member is screw or bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580971.9A CN103033487B (en) | 2012-12-27 | 2012-12-27 | Device for detecting gas humidity with infrared light |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580971.9A CN103033487B (en) | 2012-12-27 | 2012-12-27 | Device for detecting gas humidity with infrared light |
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| Publication Number | Publication Date |
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| CN103033487A true CN103033487A (en) | 2013-04-10 |
| CN103033487B CN103033487B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210580971.9A Active CN103033487B (en) | 2012-12-27 | 2012-12-27 | Device for detecting gas humidity with infrared light |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345748A (en) * | 2014-10-28 | 2015-02-11 | 佛山市禾才科技服务有限公司 | Automatic granary humidity control device |
| CN104500428A (en) * | 2014-10-28 | 2015-04-08 | 佛山市禾才科技服务有限公司 | Centrifugal fan capable of automatically controlling humidity of granary |
| CN106338490A (en) * | 2016-11-16 | 2017-01-18 | 周学成 | Infrared light detection water concentration sensor |
Citations (7)
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| JPH0310146A (en) * | 1989-06-08 | 1991-01-17 | Okawara Mfg Co Ltd | Reflecting optical fiber type infrared-ray moisture meter |
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| JPH06347360A (en) * | 1993-06-04 | 1994-12-22 | Power Reactor & Nuclear Fuel Dev Corp | Inner tube fracture detector for double tube type steam generator |
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2012
- 2012-12-27 CN CN201210580971.9A patent/CN103033487B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0310146A (en) * | 1989-06-08 | 1991-01-17 | Okawara Mfg Co Ltd | Reflecting optical fiber type infrared-ray moisture meter |
| CH681392A5 (en) * | 1990-12-18 | 1993-03-15 | Alcatel Str Ag | Moisture content measuring method for plastics mass - heating test flask and measuring absorption of IR radiation using vapour products in carrier gas in measuring cell |
| US5468961A (en) * | 1991-10-08 | 1995-11-21 | Fisher & Paykel Limited | Infrared gas analyser and humidity sensor |
| JPH06347360A (en) * | 1993-06-04 | 1994-12-22 | Power Reactor & Nuclear Fuel Dev Corp | Inner tube fracture detector for double tube type steam generator |
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| SOICHI OTSUKI ET AL: "A novel fiber-optic gas-sensing configuration using extremely curved optical fibers and an attempt for optical humidity detection", 《SENSORS AND ACTUATORS B:CHEMICAL》, vol. 53, no. 12, 30 November 1998 (1998-11-30), pages 91 - 96, XP004151878, DOI: doi:10.1016/S0925-4005(98)00296-2 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345748A (en) * | 2014-10-28 | 2015-02-11 | 佛山市禾才科技服务有限公司 | Automatic granary humidity control device |
| CN104500428A (en) * | 2014-10-28 | 2015-04-08 | 佛山市禾才科技服务有限公司 | Centrifugal fan capable of automatically controlling humidity of granary |
| CN106338490A (en) * | 2016-11-16 | 2017-01-18 | 周学成 | Infrared light detection water concentration sensor |
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| Publication number | Publication date |
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| CN103033487B (en) | 2014-10-15 |
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