CN202947816U - Fiber bragg grating temperature detecting system - Google Patents
Fiber bragg grating temperature detecting system Download PDFInfo
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- CN202947816U CN202947816U CN201220636100.XU CN201220636100U CN202947816U CN 202947816 U CN202947816 U CN 202947816U CN 201220636100 U CN201220636100 U CN 201220636100U CN 202947816 U CN202947816 U CN 202947816U
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- temperature
- bragg grating
- fiber bragg
- module
- optical fiber
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Abstract
The utility model discloses a fiber bragg grating temperature detecting system and belongs to the field of temperature detection. The fiber bragg grating temperature detecting system aims at solving the problem that the existing temperature detecting system is high in cost and complex in networking and can cause fault easily and comprises a laser device, a temperature control module, a coupler, a fiber bragg grating sensor, a photoelectric detection module, a singlechip and a wireless communication module. The singlechip outputs signals to control the temperature control module, and the laser device is controlled to output central wavelength of optical signals according to temperature of the temperature control module; output light signals of the laser device are irradiated onto the fiber bragg grating sensor through the coupler, reflecting light signals of the fiber bragg grating sensor are irradiated onto the photoelectric detection module through the coupler and converted and processed by the photoelectric detection module to be transmitted to the singlechip, and the singlechip uploads the temperature data to the network through the wireless communication module. The fiber bragg grating temperature detecting system can be used in places low in cost requirements.
Description
Technical field
The utility model relates to a kind of temperature-sensing system, relates in particular to the fiber optic temperature detection system.
Background technology
Compare the traditional measurement means, its sensor of optical fiber sensing technology and transmission channel are all take optical fiber as material, because the material of optical fiber is glass fibre, it is not subjected to electromagnetic interference influence, high pressure resistant, corrosion-resistant, stability is strong, thereby be widely used in the temperature monitoring in the fields such as transformer station's High-low voltage switch cabinet, cable splice, petroleum and petrochemical industry storage tank, with the disaster hidden-trouble that timely discovery exists, accomplish to prevent trouble before it happens.
Existing optical fiber grating temperature detection system is all to adopt embedded main board to add fiber Bragg grating (FBG) demodulator to carry out thermometric, first measure the reflection wavelength of tested grating by fiber Bragg grating (FBG) demodulator, then obtain temperature after being further analyzed processing by embedded main board, then upload to industrial computer by Ethernet and concentrate displaying.Its major defect is: 1) the general cost of existing fiber grating demodulation scheme is higher, causes the holistic cost of optical fiber grating temperature detection system to rise, and makes this system can't obtain large-area promoting the use of; 2) adopt Ethernet as communication interface, networking is complicated, and network failure easily occurs.
The utility model content
In view of this, be necessary for the problems referred to above, a kind of optical fiber grating temperature detection system be provided, the utility model by the following technical solutions:
A kind of optical fiber grating temperature detection system comprises laser instrument, temperature control modules, coupling mechanism, fiber-optic grating sensor, photodetection module, single-chip microcomputer and wireless communication module; Described single-chip microcomputer output signal is controlled described temperature control modules, and described laser instrument is controlled the centre wavelength of described laser instrument output optical signal according to the temperature of described temperature control modules; The output optical signal of described laser instrument is injected described fiber-optic grating sensor through described coupling mechanism, described fiber-optic grating sensor reflected light signal incides described photodetection module through described coupling mechanism, deliver to described single-chip microcomputer through described photodetection module converts with after processing, described single-chip microcomputer is uploaded network with temperature data through described wireless communication module.
In the optical fiber grating temperature detection system of the utility model scheme, described laser instrument is Distributed Feedback Laser.
In the optical fiber grating temperature detection system of the utility model scheme, described coupling mechanism is the 1X2 coupling mechanism.
In the optical fiber grating temperature detection system of the utility model scheme, described photodetection module is the InGaAs diode.
In the optical fiber grating temperature detection system of the utility model scheme, described single-chip microcomputer and described wireless communication module are by the RS232 interface communication.
The beneficial effects of the utility model are: adopt DFB(Distribute Feedback distributed feedback) laser instrument and InGaAs diode, improved the cost performance of system, system works is stable; Adopt simultaneously radio communication, make networking convenient and swift, reduced the network failure incidence, improved running efficiency of system.
Description of drawings
Fig. 1 is the schematic diagram of optical fiber grating temperature detection system.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further detailed.
in Fig. 1, employing with the Distributed Feedback Laser of temperature control modules as light source, single-chip microcomputer is by the steady temperature of D/A output unit design temperature control module, and then the centre wavelength value of modulation Distributed Feedback Laser output optical signal, the Distributed Feedback Laser output optical signal incides in fiber-optic grating sensor through the 1X2 coupling mechanism, fiber-optic grating sensor can reflect the light signal of specific wavelength, the light signal that reflects incides InGaAs diode as the photodetection module through the 1X2 coupling mechanism, after the photodetection module is carried out opto-electronic conversion and signal amplification, signal is delivered to the A/D converting unit of single-chip microcomputer and carried out analog to digital conversion, pass through again further analyzing and processing, can obtain the fiber-optic grating sensor measured temperature as calculated, single-chip microcomputer sends to wireless communication module by the RS232 interface with temperature data, then passes through the wireless network uploading data by wireless communication module.
The above embodiment has only expressed embodiment of the present utility model, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (5)
1. an optical fiber grating temperature detection system, is characterized in that: comprise laser instrument, temperature control modules, coupling mechanism, fiber-optic grating sensor, photodetection module, single-chip microcomputer and wireless communication module; Described single-chip microcomputer output signal is controlled described temperature control modules, and described laser instrument is controlled the centre wavelength of described laser instrument output optical signal according to the temperature of described temperature control modules; The output optical signal of described laser instrument is injected described fiber-optic grating sensor through described coupling mechanism, described fiber-optic grating sensor reflected light signal incides described photodetection module through described coupling mechanism, deliver to described single-chip microcomputer through described photodetection module converts with after processing, described single-chip microcomputer is uploaded network with temperature data through described wireless communication module.
2. optical fiber grating temperature detection system according to claim 1, it is characterized in that: described laser instrument is Distributed Feedback Laser.
3. optical fiber grating temperature detection system according to claim 1, it is characterized in that: described coupling mechanism is the 1X2 coupling mechanism.
4. optical fiber grating temperature detection system according to claim 1, it is characterized in that: described photodetection module is the InGaAs diode.
5. according to claim 1 to the 4 described optical fiber grating temperature detection systems of any one, it is characterized in that: described single-chip microcomputer and described wireless communication module are by the RS232 interface communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220636100.XU CN202947816U (en) | 2012-11-27 | 2012-11-27 | Fiber bragg grating temperature detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220636100.XU CN202947816U (en) | 2012-11-27 | 2012-11-27 | Fiber bragg grating temperature detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202947816U true CN202947816U (en) | 2013-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220636100.XU Expired - Fee Related CN202947816U (en) | 2012-11-27 | 2012-11-27 | Fiber bragg grating temperature detecting system |
Country Status (1)
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| CN (1) | CN202947816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267160A (en) * | 2017-12-28 | 2018-07-10 | 博立信（北京）科技有限公司 | Time-multiplexed fiber Bragg grating sensor |
-
2012
- 2012-11-27 CN CN201220636100.XU patent/CN202947816U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267160A (en) * | 2017-12-28 | 2018-07-10 | 博立信（北京）科技有限公司 | Time-multiplexed fiber Bragg grating sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20130522 Termination date: 20171127 |