CN206192392U - Adopt dry wet process temperature and humidity sensing probe of fiber bragg grating sensor ware - Google Patents
Adopt dry wet process temperature and humidity sensing probe of fiber bragg grating sensor ware Download PDFInfo
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- CN206192392U CN206192392U CN201620799036.5U CN201620799036U CN206192392U CN 206192392 U CN206192392 U CN 206192392U CN 201620799036 U CN201620799036 U CN 201620799036U CN 206192392 U CN206192392 U CN 206192392U
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Abstract
The utility model discloses an adopt dry wet process temperature and humidity sensing probe of fiber bragg grating sensor ware, wide application in environmental parameter monitoring technology field. Its technical scheme does: the probe comprises bottom plate, water tank, outer guard shield, humidity drainage line, fiber grating temperature sensor, fiber grating humidity transducer, pigtail cable etc. Fiber grating temperature sensor adopts fiber grating perception outside temperature change, and fiber grating humidity transducer adopts wet method of comparison measuring ring border hygrometry futilely. The probe uses the fiber grating temperature and humidity sensor cooperation, can realize passiveization of sensing end, full glossization to possess wavelength devision multiplex function and signal remote transmission function.
Description
1st, technical field：
Ambient parameter monitoring technical field
2nd, background technology：
The main wet and dry bulb for including being constituted with mercurial thermometer of temperature and humidity sensing probe of each company production both at home and abroad at present
The universal products such as humiture probe, humistor formula humiture probe, humicap formula humiture probe, not yet use optical fiber
The humiture probe that grating sensor and wet-dry change are combined.Wet and dry bulb humiture probe technologies are more ripe, it is main using it is dry,
Wet two mercurial thermometers constitute humidity table, and the rh value in air, such humiture are measured with look-up table
Meter low cost, stable performance.But the Hygrothermograph can only each probe be independently operated, and can only by be accomplished manually data reading
Take and record, convenience is poor in use, cost of labor is high, cannot more accomplish many sensing probe networkings use, warm and humid degrees of data it is remote
The functions such as journey transmission, do not possess the intelligent condition for using.And resistance-type, condenser type temperature and humidity sensing probe be by it is temperature sensitive,
Wet sensitive electronic component sense temperature and humidity data, need power supply during its use, data transfer is also required to power supply and phase
Powered-down cable is aided in, it is impossible to accomplish sensor ends passive, and electronic device is more sensitive to use environment, and appearance is used for a long time
It is easily aging, produce the decline of precision.Using fiber-optic grating sensor as temperature and humidity sensing element, wet-dry change group is recycled
Into temperature and relative humidity sensing probe, sensing element all-fiber, probe performance stabilization, long service life, profit can be accomplished
Optical Fiber Transmission data are used, the long range transmission of sensing data is capable of achieving, therefore the probe possesses suitable sensing data and passes at a distance
The inherent advantage such as defeated, probe long service life, stable performance, electromagnetism interference be strong.
3rd, utility model content：
Using fiber-optic grating sensor wet-dry change temperature and humidity sensing pop one's head in purpose be：
1) use fiber-optic grating sensor wet-dry change temperature and humidity sensing pop one's head in utilize be with the grating etched on optical fiber
The optical fiber grating temperature of sensing element, humidity sensor composition sensing probe, it is possible to achieve passive, complete photochemical sensing end
End.The probe is used with safe and reliable advantage in electromagnetic susceptibility occasion.
2) wavelength-division multiplex function, multiple humitures can be realized using the wavelength distinguishing characteristic of fiber-optical grating temperature sensor
The centre wavelength of fiber grating used by sensing probe is different, can connect and realize wavelength-division multiplex over the same fiber.
3) pop one's head in integrated two same sizes through temperature sensitive encapsulation fiber-optical grating temperature sensor, a fiber grating temperature
Degree sensor is placed in as dry end sensor is used for measuring environment temperature value in air, another fiber-optical grating temperature sensor is put
Wet sensitive is completed in the wet sensitive drainage thread of probe to encapsulate as humidity sensor, when envionmental humidity changes, temperature
The temperature value that sensor is measured produces the temperature difference, the temperature difference size and relative humidity in air with the temperature value that humidity sensor is measured
Proportional relation, the rh value in environment can be obtained by the conversion to the proportionate relationship.
4) the sensed humiture information of fiber grating temperature and humidity sensing probe is embodied with the change of its centre wavelength,
The wavelength change can be converted into the wavelength change that remote light source is input to the laser of probe, can will carry warm and humid by Transmission Fibers
The laser far-distance of degree information is back to remote signaling processing equipment and carries out humiture data calculation.
4th, illustrate：
Fig. 1 is the fundamental diagram of the wet-dry change temperature and humidity sensing probe of above-mentioned use fiber-optic grating sensor.
5th, specific embodiment：
Fig. 1 shows the fundamental diagram popped one's head in using the wet-dry change temperature and humidity sensing of fiber-optic grating sensor.Probe master
Will be by fixed base plate (1), water tank (2), outer shield (3), humidity drainage thread (4), fiber-optical grating temperature sensor (5), optical fiber light
The part such as grid humidity sensor (6), stern fast (7) constitutes.It is any one that fiber-optical grating temperature sensor (5) is fixed on base plate or so
Side, fiber bragg grating temperature sensor (6) is coated to outward humidity drainage thread (4) and is fixed on opposite side, and humidity drainage thread (4) end is inserted
Enter water tank (2), be connected with optical fiber between fiber-optical grating temperature sensor (5) and fiber bragg grating temperature sensor (6), both is defeated
Enter hole of the output optical fibre in the middle of the stern fast (7) to draw, outer shield (3) be buckled in fixed base plate (1) outside to Temperature Humidity Sensor and
Optical fiber is protected.
Optical fiber Bragg grating encapsulation constitutes fiber-optical grating temperature sensor in temperature sensitive structure, is placed in environment in measurement air
Temperature value.Humidity drainage thread is coated to outside same fiber-optical grating temperature sensor and constitutes humidity sensor, under humidity drainage thread
In end insertion water tank, the drainage thread infiltration that can be coated to for humidity sensor due to siphonage by the water in water tank.Due to drainage thread
The moisture evaporation that infiltration is caused can make the temperature value and fiber-optical grating temperature sensor temperature measured by fiber bragg grating temperature sensor
Between angle value T produce difference DELTA T, Δ T relations proportional to envionmental humidity, by dry and wet contrast algorithm can calculate by
Survey envionmental humidity value.
Claims (4)
1. a kind of wet-dry change temperature and humidity sensing of use fiber-optic grating sensor is popped one's head in, for measuring environment temperature value and humidity
Value, it is characterised in that：Temperature and humidity sensing probe includes fixed base plate (1), water tank (2), outer shield (3), humidity drainage thread
(4), fiber-optical grating temperature sensor (5), fiber bragg grating temperature sensor (6), stern fast (7)；Fiber-optical grating temperature sensor (5)
Any side of base plate or so is fixed on, fiber bragg grating temperature sensor (6) is coated to outward humidity drainage thread (4) and is fixed on another
Insert water tank (2), fiber-optical grating temperature sensor (5) and fiber bragg grating temperature sensor (6) in side, humidity drainage thread (4) end
Between connected with optical fiber, hole of both input-output optical fibers in the middle of the stern fast (7) is drawn, and outer shield (3) is buckled in fixed base plate
(1) outside is protected to Temperature Humidity Sensor and optical fiber.
2. the wet-dry change temperature and humidity sensing of the use fiber-optic grating sensor described in claim 1 is popped one's head in, it is characterised in that：Utilize
Carve grating of the decorations on optical fiber and constitute Temperature Humidity Sensor as sensing element, it is possible to achieve be sensing probe passive, complete photochemical.
3. the wet-dry change temperature and humidity sensing of the use fiber-optic grating sensor described in claim 1 is popped one's head in, it is characterised in that：Optical fiber
Grating temperature sensor (5) is different from the wavelength of the fiber grating that fiber bragg grating temperature sensor (6) is used, two fiber gratings
Wavelength-division multiplex function can be realized by the optical fiber composition sensor group that links together, can measuring environment temperature value and relative simultaneously
Humidity value.
4. the wet-dry change temperature and humidity sensing of the use fiber-optic grating sensor described in claim 1 is popped one's head in, it is characterised in that：It is warm and humid
Degree sensing probe measures humidity parameter measurement using dry, wet method of comparison, and fiber-optical grating temperature sensor is used for measuring environment
Temperature parameter, is coated to humidity drainage thread (4), humidity drainage thread (4) insertion water outside the fiber-optical grating temperature sensor of same structure
In case (2), the humidity sensor sensitive to ambient humidity is constituted, gone out with the differential thermal calculation of temperature sensor using humidity sensor
Envionmental humidity value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799036.5U CN206192392U (en) | 2016-07-26 | 2016-07-26 | Adopt dry wet process temperature and humidity sensing probe of fiber bragg grating sensor ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799036.5U CN206192392U (en) | 2016-07-26 | 2016-07-26 | Adopt dry wet process temperature and humidity sensing probe of fiber bragg grating sensor ware |
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| CN206192392U true CN206192392U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620799036.5U Expired - Fee Related CN206192392U (en) | 2016-07-26 | 2016-07-26 | Adopt dry wet process temperature and humidity sensing probe of fiber bragg grating sensor ware |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860408A (en) * | 2017-10-25 | 2018-03-30 | 南京大学 | A kind of detachable hygrometer based on FBG technologies |
| CN108827916A (en) * | 2018-04-20 | 2018-11-16 | 武汉理工大学 | Light fibre humidity transducer and preparation method thereof based on lithium chloride doped polyimide |
| CN108896488A (en) * | 2018-07-17 | 2018-11-27 | 山东省科学院激光研究所 | Light fibre humidity transducer, production method, data processing method and acquisition device |
-
2016
- 2016-07-26 CN CN201620799036.5U patent/CN206192392U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860408A (en) * | 2017-10-25 | 2018-03-30 | 南京大学 | A kind of detachable hygrometer based on FBG technologies |
| CN108827916A (en) * | 2018-04-20 | 2018-11-16 | 武汉理工大学 | Light fibre humidity transducer and preparation method thereof based on lithium chloride doped polyimide |
| CN108896488A (en) * | 2018-07-17 | 2018-11-27 | 山东省科学院激光研究所 | Light fibre humidity transducer, production method, data processing method and acquisition device |
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| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Wanlijun Document name: Notice of termination of patent right |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20200726 |