CN2414407Y - Semiconductor absorption type optical fiber temp. measuring linearized experiment apparatus - Google Patents
Semiconductor absorption type optical fiber temp. measuring linearized experiment apparatus Download PDFInfo
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- CN2414407Y CN2414407Y CN 00227613 CN00227613U CN2414407Y CN 2414407 Y CN2414407 Y CN 2414407Y CN 00227613 CN00227613 CN 00227613 CN 00227613 U CN00227613 U CN 00227613U CN 2414407 Y CN2414407 Y CN 2414407Y
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- semiconductor absorption
- optical fiber
- light source
- linearization
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Abstract
The utility model relates to a detecting apparatus used in semiconductor absorption type fiber temperature sensors, which comprises a light intensity controlling circuit, a light source, a fiber sensor, a photoelectric detector and a signal receiving and processing apparatus, wherein the light source can be coupled with fiber. Because the utility model adopts the structure of a single source, single fiber and a singe detector of a light intensity and time separating method, the utility model has the advantages of simple structure, material saving and easy production and can make the ratio of outputting light intensity linearly changed following temperature. The utility model is a convenient and practical semiconductor absorption type fiber temperature detecting linearized experimental apparatus.
Description
The utility model is a kind of pick-up unit that is used for the semiconductor absorption fibre optic temperature sensor, belongs to the innovative technology of fibre optic temperature sensor pick-up unit.
The existing used pick-up unit of semiconductor absorption fibre optic temperature sensor, generally be the structure of the really two light source-single fibers-simple detector of usefulness wavelength-time-division method and the structure that adopts single light source-two optical fiber-double detectors of light intensity-separated by spaces method, the not only used device material of these structures is more, complex structure, make trouble, and the output ratio signal is non-linear.
The purpose of this utility model is to overcome above-mentioned shortcoming and provides a kind of simple in structure, saves material, make easily, and the linearizing semiconductor absorption fiber optic temperature of output ratio signal test experience device.
Structure of the present utility model as shown in drawings, include light intensity control circuit (1), can with the light source (2) of optical fiber coupling, Fibre Optical Sensor (3), photodetector (4), signal receives and treating apparatus (5), wherein can be connected with the output terminal of light intensity control circuit (1) with the input end of the light source (2) of optical fiber coupling, incident optical in the Fibre Optical Sensor (3) with can be connected with the output terminal of the light source (2) of light source coupling, outgoing optical fiber is connected with the input end of photodetector (4), and the output terminal of photodetector (4) receives with signal and the input end for the treatment of apparatus (5) is connected.
Describe concrete structure of the present utility model in detail below in conjunction with embodiment:
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is a schematic diagram of the present utility model;
Fig. 3 is the relation curve that output intensity (U) changes with incident intensity (I);
Fig. 4, Fig. 5 are the relation curve of output intensity ratio γ and temperature.
Embodiment:
Structural representation of the present utility model as shown in Figure 1, include light intensity control circuit (1), can with the light source (2) of optical fiber coupling, Fibre Optical Sensor (3), photodetector (4), signal receives and treating apparatus (5), wherein can be connected with the output terminal of light intensity control circuit (1) with the input end of the light source (2) of optical fiber coupling, incident optical in the Fibre Optical Sensor (3) with can be connected with the output terminal of the light source (2) of light source coupling, outgoing optical fiber is connected with the input end of photodetector (4), the output terminal of photodetector (4) receives with signal and the input end for the treatment of apparatus (5) is connected, above-mentioned light intensity control circuit (1) can be current control circuit, above-mentionedly can be light emitting diode with the light source (2) of optical fiber coupling, also can be semiconductor laser, above-mentioned photocurrent detector (4) can be photodiode or other photodetector, above-mentioned signal receives and treating apparatus (5) receives and treating apparatus for electric signal, in the present embodiment, light intensity control circuit (1) includes variable resistor R, power supply W, reometer B, can be LED with the light source (2) of optical fiber coupling, Fibre Optical Sensor (3) includes incident optical F1, outgoing optical fiber F2, water bath with thermostatic control H, temp probe S, photodetector (4) is photodiode PD, signal receives and treating apparatus (5) includes resistance R 0 and potential difference meter UJ, wherein the anode of LED and negative electrode are connected with the end of variable resistor R and reometer B respectively, the other end of variable resistor R and reometer B is connected on the power supply W, the end of incident optical F1 and outgoing optical fiber F2 is connected with the two ends of temp probe S respectively, the other end of F1 is connected on the LED, the other end of F2 is connected on the photodiode PD, resistance R 0 is attempted by the two ends of photodiode PD, and potential difference meter UJ is attempted by the two ends of resistance R 0.Above-mentioned power supply W is a stabilized voltage supply, and reometer B is a milliammeter.
When the utility model uses, the resistance that changes variable resistor R can make the exciting current I (corresponding to the different incident intensity of sensor) of LED change, and the pressure drop (corresponding to the output intensity of sensor) of photocurrent on resistance R 0 that photodiode PD produces recorded by potential difference meter UJ.
Utilize experimental provision of the present utility model, record (20.7 ℃ of three kinds of different steady temperatures, 62.0 ℃, 98.6 ℃) under, the relation curve that the output intensity of sensor (U) changes with incident intensity (I) as shown in Figure 3, as seen from the figure, the two is nonlinear relationship, and temperature is high more, and the variation of nonlinear curve is slow more.
Owing to have nonlinear relationship between output intensity and the incident intensity, if two incident intensities (two different exciting currents of respective leds LED) that selection varies in size, measure output intensity (being the voltage drop on the resistance R 0) respectively, its ratio signal can reduce measuring error.For this reason, can select three different exciting currents of LED (to be respectively 40,50,80,90,100mA), in the scope of 20.7 ℃ to 98.6 ℃ of room temperatures, every about 10 ℃, measured output voltage (light intensity) respectively, and the output intensity that utilizes computing machine to obtain two less exciting current correspondences (is made as U40, U50) corresponding with three bigger exciting currents output intensity (is made as U80, U90, U100) ratio γ, its result such as Fig. 4, shown in Figure 5, straight line among the figure is the result of linear fit, this shows two output intensity ratio and temperature line relationships.
The utility model is owing to the structure of the single light source-single fiber-simple detector that adopts light intensity-time-division method, so it is not only simple in structure, saves material, makes easily, and the ratio of output intensity is changed with temperature linearity.The utility model is that a kind of convenient and practical semiconductor absorption fiber optic temperature detects the linearization experimental provision.
Claims (8)
1, a kind of semiconductor absorption fiber optic temperature detects the linearization experimental provision, it is characterized in that including light intensity control circuit (1), can with the light source (2) of optical fiber coupling, Fibre Optical Sensor (3), photodetector (4), signal receives and treating apparatus (5), wherein can be connected with the output terminal of light intensity control circuit (1) with the input end of the light source (2) of optical fiber coupling, incident optical in the Fibre Optical Sensor (3) with can be connected with the output terminal of the light source (2) of light source coupling, outgoing optical fiber is connected with the input end of photodetector (4), and the output terminal of photodetector (4) receives with signal and the input end for the treatment of apparatus (5) is connected.
2, semiconductor absorption fiber optic temperature according to claim 1 detects the linearization experimental provision, it is characterized in that above-mentioned light intensity control circuit (1) can be current control circuit.
3, semiconductor absorption fiber optic temperature according to claim 1 detects the linearization experimental provision, it is characterized in that above-mentionedly can be light emitting diode with the light source (2) of optical fiber coupling, also can be semiconductor laser.
4, semiconductor absorption fiber optic temperature according to claim 1 detects the linearization experimental provision, it is characterized in that above-mentioned photocurrent detector (4) can be photodiode or other photodetector.
5, semiconductor absorption fiber optic temperature according to claim 1 detects the linearization experimental provision, it is characterized in that above-mentioned signal receives and treating apparatus (5) receives and treating apparatus for electric signal.
6, detect the linearization experimental provision according to claim 1 or 2 or 3 or 4 or 5 described semiconductor absorption fiber optic temperatures, it is characterized in that above-mentioned light intensity control circuit (1) includes variable resistor R, power supply W, reometer B, can be LED with the light source (2) of optical fiber coupling, Fibre Optical Sensor (3) includes incident optical F1, outgoing optical fiber F2, water bath with thermostatic control H, temp probe S, photodetector (4) is photodiode PD, signal receives and treating apparatus (5) includes resistance R 0 and potential difference meter UJ, wherein the anode of LED and negative electrode are connected with the end of variable resistor R and reometer B respectively, the other end of variable resistor R and reometer B is connected on the power supply W, the end of incident optical F1 and outgoing optical fiber F2 is connected with the two ends of temp probe S respectively, the other end of F1 is connected on the LED, the other end of F2 is connected on the photodiode PD, resistance R 0 is attempted by the two ends of photodiode PD, and potential difference meter UJ is attempted by the two ends of resistance R 0.
7, semiconductor absorption fiber optic temperature according to claim 6 detects the linearization experimental provision, it is characterized in that above-mentioned power supply W is a stabilized voltage supply.
8, semiconductor absorption fiber optic temperature according to claim 6 detects the linearization experimental provision, it is characterized in that above-mentioned reometer B is a milliammeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00227613 CN2414407Y (en) | 2000-03-22 | 2000-03-22 | Semiconductor absorption type optical fiber temp. measuring linearized experiment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00227613 CN2414407Y (en) | 2000-03-22 | 2000-03-22 | Semiconductor absorption type optical fiber temp. measuring linearized experiment apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN2414407Y true CN2414407Y (en) | 2001-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 00227613 Expired - Fee Related CN2414407Y (en) | 2000-03-22 | 2000-03-22 | Semiconductor absorption type optical fiber temp. measuring linearized experiment apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458386C (en) * | 2003-07-09 | 2009-02-04 | 贺利氏电子耐特国际股份公司 | Method and apparatus for calibration and measurement of temperatures in melts by optical fibers |
| CN101344439B (en) * | 2008-08-20 | 2010-10-27 | 东南大学 | Construction method for optical fibre temperature survey apparatus |
| CN101802577B (en) * | 2007-06-29 | 2012-10-17 | 通快激光与系统工程有限公司 | Monitoring the temperature of an optical element |
| CN103134607A (en) * | 2011-11-23 | 2013-06-05 | 成都酷玩网络科技有限公司 | Sing-optical-path semiconductor absorption-type optical fiber temperature sensor |
| CN105444920A (en) * | 2014-09-02 | 2016-03-30 | 烟台龙源电力技术股份有限公司 | Online flue gas temperature measurement method, device and system based on visible light technology |
| CN108181021A (en) * | 2018-02-11 | 2018-06-19 | 天津大学 | A kind of refraicometer |
| CN109974888A (en) * | 2019-03-15 | 2019-07-05 | 上海电仪仪器仪表有限公司 | A kind of temperature transmitter structure |
| CN112729617A (en) * | 2020-12-28 | 2021-04-30 | 中国航天空气动力技术研究院 | Continuous calibration method and system for temperature-sensitive material and storage medium |
-
2000
- 2000-03-22 CN CN 00227613 patent/CN2414407Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458386C (en) * | 2003-07-09 | 2009-02-04 | 贺利氏电子耐特国际股份公司 | Method and apparatus for calibration and measurement of temperatures in melts by optical fibers |
| CN101802577B (en) * | 2007-06-29 | 2012-10-17 | 通快激光与系统工程有限公司 | Monitoring the temperature of an optical element |
| CN101344439B (en) * | 2008-08-20 | 2010-10-27 | 东南大学 | Construction method for optical fibre temperature survey apparatus |
| CN103134607A (en) * | 2011-11-23 | 2013-06-05 | 成都酷玩网络科技有限公司 | Sing-optical-path semiconductor absorption-type optical fiber temperature sensor |
| CN105444920A (en) * | 2014-09-02 | 2016-03-30 | 烟台龙源电力技术股份有限公司 | Online flue gas temperature measurement method, device and system based on visible light technology |
| CN108181021A (en) * | 2018-02-11 | 2018-06-19 | 天津大学 | A kind of refraicometer |
| CN109974888A (en) * | 2019-03-15 | 2019-07-05 | 上海电仪仪器仪表有限公司 | A kind of temperature transmitter structure |
| CN112729617A (en) * | 2020-12-28 | 2021-04-30 | 中国航天空气动力技术研究院 | Continuous calibration method and system for temperature-sensitive material and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |