CN1166930C - Light-sensing temperature monitor - Google Patents
Light-sensing temperature monitor Download PDFInfo
- Publication number
- CN1166930C CN1166930C CNB021120714A CN02112071A CN1166930C CN 1166930 C CN1166930 C CN 1166930C CN B021120714 A CNB021120714 A CN B021120714A CN 02112071 A CN02112071 A CN 02112071A CN 1166930 C CN1166930 C CN 1166930C
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- temperature
- light
- sensitive member
- catoptron
- receiver
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Abstract
The present invention relates to a light-sensing temperature monitor which aims to prevent the burning condition of electric equipment such as a high-voltage switch or a transformer, etc. caused by overheating. The light-sensing temperature monitor monitors changes of the temperature of the electric equipment for taking measures in time to eliminate the incipient tendency of an accident. The monitor is provided with a reflecting mirror arranged on a temperature-sensing element composed of two materials with different heat expansion coefficients, and the temperature-sensing element can be in the structure of two brackets or two metal sheets. The temperature-sensing element contacts or approaches to a temperature measuring point as soon as possible, and a beam of collimated light is irradiated on the reflecting mirror. Light reflected from the reflecting mirror is received by an arranged receiver, and the temperature-sensing element is connected with a treating device by receiving output signals. The reflecting mirror can be deflected along with changes of the temperature of the temperature measuring point by the temperature-sensing element, and a linear relationship exists between the temperature measuring point and the reflecting mirror. The deflection amount of the reflecting mirror can be indicated from the position of the receiver, and thus, the temperature of a measured object can be measured. The device can be arranged in a high-voltage switch cabinet and can be used for places with large space.
Description
Technical field
The invention belongs to the monitoring temperature field, relates to light sensing remote temperature supervising device.
Background technology
In extra high voltage network, because electrical equipments such as high-tension switch or transformer are because of some reason can produce a large amount of heats, if processing in time can cause high-voltage switch gear or transformer to be burnt, thereby cause the generation of accident, cause heavy economic losses.Therefore it is extremely important equipment such as high-tension switch contact and transformer to be carried out monitoring temperature.But be in the strong-electromagnetic field owing to need carry out the environment of monitoring temperature, general contact temperature-measuring method is difficult to solve Insulation Problems and electromagnetic interference problem.Adopt contactless infrared radiation temperature method, measurement result is easily affected by environment, and cost is very high, and is not suitable for using in situations such as high-tension switch cabinet.
Summary of the invention
The present invention is directed to prior art problems, a kind of smooth sensing remote temperature supervising device is provided, it can be worked under the strong-electromagnetic field environment, is not subjected to the influence of environment, can reach higher measuring accuracy and monitoring reliability.
In order to achieve the above object, basic design is to adopt optical means to solve the insulation in the strong-electromagnetic field and the problem of electromagnetic interference (EMI), utilizes the linear thermal expansion character of material, carries out monitoring temperature in the strong-electromagnetic field in conjunction with simple optical principle.
Basic technical scheme is: catoptron is installed on the temperature-sensitive member that is made of two kinds of different materials of thermal expansivity, the temperature-sensitive member can be that two supporting structures also can be the bimetallic strip structures, the temperature-sensitive member contacts with point for measuring temperature or is close as far as possible, a branch of collimated light is radiated on the catoptron, be received device acceptance from the light of mirror reflects, link to each other with treating apparatus by the receiver output signal, treating apparatus has opto-electronic conversion, signal amplifies, data processing, record shows, functional devices such as warning can be monitored the temperature of tested electrical equipment by the position indication of receiver.
So-called two supporting structures are supports of making two supporting reflex mirrors with the material of two kinds of different thermal expansivity respectively; So-called bimetallic strip is meant two kinds of flaky materials that metal bonding forms together that thermal expansivity is different, the bimetallic strip structure has two kinds of forms, a kind of similar with two supporting structures, when being sticked together fully, the support of being made by two kinds of metal materials just becomes a kind of of bimetallic strip structure, another is that bimetallic strip is bent into the U type, and two arms of U type link to each other with base with catoptron respectively.In this device,, on temperature-measurement principle and implementation method, be essentially identical though the version of temperature-sensitive member has multiple choices.
The beneficial effect of the invention:
(1) this device has solved insulation, interference problem in the high electromagnetic field fully owing to adopt full optical means to carry out temperature survey and signal transmission;
(2) this device is owing to utilized line of material swelling properties hot in nature, and reflected light path amplifies the thermal expansion deflection, therefore can obtain higher measuring accuracy in whole range of temperature, can realize the monitoring of high reliability;
(3) this apparatus structure is simple, and is with low cost, and working service is very convenient.
Description of drawings
Fig. 1 is the structural representation of example 1;
Fig. 2 is the structural representation of example 2;
Fig. 3 is a temperature-measurement principle synoptic diagram of the present invention;
Fig. 4 is the structural representation of example 3;
Fig. 5 is the structural representation of example 4.
Embodiment:
Describe the embodiment of technical scheme in detail with reference to accompanying drawing.
Example 1 is a kind of constructional device of sealing, and its temperature-sensitive member adopts the supporting structure form.As shown in Figure 1, the incident light 19 of outside transfers collimated light 4 to and shines on the catoptron 5 by being contained in lens 3 on the base 2 on the casing 12 via optical fiber 1, catoptron is contained in the end that materials having different thermal expansion coefficient is made the support 6 and the support 7 of temperature-sensitive member, two supports are fixed on the casing 12 by base 8, and the one side of the casing that links to each other with two supports is on the point for measuring temperature; A series of receivers 10 according to certain spacing arrangement are set on the direction that the reflected light 9 with catoptron 5 intersects, and these a series of receivers are fixedly mounted on the casing 12 by certain angle by base 11.Each receiver is all connecting an optical fiber 13, and light signal is transferred to conversion process, display device outside the strong-electromagnetic field coverage through optical fiber 13.The position of point for measuring temperature is located at needs the electrical equipment of monitoring temperature whereabouts, is within the strong-electromagnetic field coverage.When breaking down, when the temperature of point for measuring temperature changes, the temperature of support 6 and support 7 can change thereupon, because support 6 is different with the thermal expansivity of support 7, length difference between two stands can vary with temperature and change, thereby cause rack-mount catoptron 5 to deflect, and have certain linear between temperature variation and the deflection angle.As shown in Figure 3, there are angle θ in catoptron 5 ' that deflects and catoptron between the original position 5, though the direction of incident light 4 is constant, also there is angle θ in reflected light 9 ' direction with the direction of original reflected light 9.A series of receptacle 10 is set on the reflected light direction, reflected light 9 ' will be accepted by different receivers with original reflected light 9, and can indicate the size of mirror deflection amount from the position of receiver, by the linear relationship between mirror deflection amount and the temperature variation, can further determine the temperature variation of measured body, through recording the temperature value of measured body after the calibration.Temperature measuring equipment shown in Figure 1 is placed within the strong-electromagnetic field coverage, light source is placed on outside the strong-electromagnetic field coverage, with optical fiber 1 incident light is imported in the temperature measuring equipment, collimated light 4 is after the reflection of catoptron 5, reflected light 9 is accepted by a series of receiver 10 according to certain spacing arrangement, receiver 10 can be a kind of lens, and collimated light 9 is focused in the optical fiber 13.Light signal 18 is transferred in the treating apparatus 17 outside the strong-electromagnetic field coverage by optical fiber 13 then, realizes functions such as opto-electronic conversion, signal amplification, data processing, record demonstration, warning.Because each receiver is all to there being an output optical fibre, as long as therefore the light signal that detects in certain root optical fiber just can be judged the position that receives catoptrical receiver 10, thereby judge the mirror deflection amount, draw the temperature of testee, reach the purpose of monitoring temperature.In summary, the precision of measuring temperature is mainly decided by the distance between the temperature variant amplitude in mirror deflection angle, receiver and the catoptron and the number of receiver.Because flashlight is sent to strong-electromagnetic field by optical fiber and handles outward again, therefore can accomplish high pressure is insulated fully, and not be subjected to the interference of extraneous strong-electromagnetic field.Its volume of this device is little, and is subjected to external interference also less, is adapted to be mounted within high-tension switch cabinet etc.
The example 2 same stent-types that adopt, still a kind of light is at the device for carrying out said of the open architecture of free space propagation.As shown in Figure 2, aim at catoptron 5 by a branch of collimated light 4 that the light source outside strong-electromagnetic field 14 produces, reflected light 9 via catoptron 5 reflections shines on the receiver 15 that is installed in outside the strong-electromagnetic field coverage, receiver 15 is made up of a plurality of photodetectors, via photodetector light signal is converted into electric signal 20 and outputs to signal processing apparatus (17).Can draw the temperature of tested electrical equipment by the position of photodetector.This apparatus structure is simple, is adapted to be mounted within the bigger environment in space.
Example 3 as shown in Figure 4, the temperature-sensitive member adopts U type bimetallic strip 16, bimetallic strip two arms are connected and fixed with catoptron 5 and base 8 respectively.When temperature changed, the subtended angle of U-shaped structure can change, thereby changed the angle of the catoptron 5 that is attached thereto, and reached the purpose of sensing temperature.Its light channel structure and principle of work and example 1 or example 2 are roughly the same.
Example 4 as shown in Figure 5, the temperature-sensitive member adopts the support rack type bimetallic strip, support 16 is made up of two kinds of different metal supports of inter-adhesive thermal expansivity, be connected and fixed with catoptron 5 and base 8 respectively, with example 1 or example 2 similar, the principle of work of this embodiment same with above three examples roughly the same.
Claims (7)
1, light-sensing temperature monitor, comprise temperature-sensitive member and treating apparatus, it is characterized in that the temperature-sensitive member is to be made by two kinds of materials having different thermal expansion coefficient, the temperature-sensitive member contacts with point for measuring temperature or installs with point for measuring temperature is close, one end of temperature-sensitive member is installed a catoptron, the other end links to each other with mounting seat, and mounting seat contacts with point for measuring temperature or be close with point for measuring temperature; A branch of collimated light is radiated at catoptron, on the direction that the reflected light with catoptron intersects a series of receivers is set, and to handling device, treating apparatus is located at outside the strong-electromagnetic field coverage by the receiver output signal.
2, by the described light-sensing temperature monitor of claim 1, it is characterized in that the temperature-sensitive member is made of two supports (6,7), described two supports (6,7) are made with different thermal expansion coefficient material.
3, by the described light-sensing temperature monitor of claim 1, it is characterized in that the temperature-sensitive member made by bimetallic strip, its form is U type or support rack type.
4, by claim 1 or 2 described light-sensing temperature monitors, it is characterized in that having the casing (12) of this device, one side of casing is located on the point for measuring temperature, the mounting seat (8) of temperature-sensitive member is equipped with in this side near the point for measuring temperature place in casing (12), end as two supports (6,7) of temperature-sensitive member is contained on the base (8) other end attaching catoptron (5) respectively; The mounting seat (2) of optical fiber (1) is equipped with in another side in casing (12), is equipped with on the base of optical fiber lens (3) are housed; The mounting seat (11) of receiver also is housed in casing (12), by certain angle a series of receivers (10) is installed being equipped with on the base of receiver, receiver is arranged on the direction that intersects with reflected light (9) at a certain distance; Incident light (19) is converted into collimated light (4) through optical fiber (1) scioptics (3) and shines catoptron (5), the reflected light of catoptron (9) shines a series of receivers (10), each receiver all connects an optical fiber (13), and light signal (18) is transferred to treating apparatus (17) outside the strong-electromagnetic field coverage through optical fiber (13).
5, by claim 1 or 2 described light-sensing temperature monitors, it is characterized in that producing a branch of collimated light (4) by the light source outside the strong-electromagnetic field coverage (14) aims at catoptron (5), its reflected light (9) shines on a series of receivers (15) that are installed in outside the strong-electromagnetic field coverage, receiver can be made up of a plurality of photodetectors, via photodetector light signal is converted into electric signal (20) and outputs to treating apparatus (17).
6, by claim 1 or 3 described light-sensing temperature monitors, it is characterized in that the temperature-sensitive member is a U type bimetallic strip (16), its two arm links to each other with the base (8) of catoptron (5) and temperature-sensitive member respectively.
7, by claim 1 or 3 described light-sensing temperature monitors, it is characterized in that the bimetallic strip (16) that the temperature-sensitive member is made up of two kinds of different metals of inter-adhesive thermal expansivity, its two ends link to each other with the base (8) of catoptron (5) and temperature-sensitive member respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021120714A CN1166930C (en) | 2002-06-12 | 2002-06-12 | Light-sensing temperature monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021120714A CN1166930C (en) | 2002-06-12 | 2002-06-12 | Light-sensing temperature monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1384343A CN1384343A (en) | 2002-12-11 |
| CN1166930C true CN1166930C (en) | 2004-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021120714A Expired - Fee Related CN1166930C (en) | 2002-06-12 | 2002-06-12 | Light-sensing temperature monitor |
Country Status (1)
| Country | Link |
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| CN (1) | CN1166930C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674320B (en) * | 2013-12-12 | 2016-06-15 | 常州赛尔克瑞特电气有限公司 | Gas-insulated high-voltage switch cabinet contact temperature measurement device |
| CN104251747B (en) * | 2014-09-04 | 2017-01-25 | 广东福尔电子有限公司 | Bimetallic strip forming detection mechanism |
| JP6782466B2 (en) * | 2016-06-14 | 2020-11-11 | パナソニックＩｐマネジメント株式会社 | Visualization elements, measurement systems, and measurement methods |
| US10845706B2 (en) * | 2017-04-12 | 2020-11-24 | Asml Netherlands B.V. | Mirror array |
| CN108413591A (en) * | 2018-03-30 | 2018-08-17 | 浙江智祥温控科技有限公司 | A kind of phasic Chang temperature sensing package |
| CN109974876A (en) * | 2019-05-10 | 2019-07-05 | 北方民族大学 | Measure the device of temperature change |
| CN113074829A (en) * | 2021-04-30 | 2021-07-06 | 西安邮电大学 | Temperature detection device and system |
| CN115290204A (en) * | 2022-09-29 | 2022-11-04 | 国网山东省电力公司高密市供电公司 | Thermal expansion temperature indicating device and method |
| CN117433653A (en) * | 2023-10-27 | 2024-01-23 | 湖北中宸建筑安装有限公司 | Track slab measurement system and measurement method thereof |
-
2002
- 2002-06-12 CN CNB021120714A patent/CN1166930C/en not_active Expired - Fee Related
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| CN1384343A (en) | 2002-12-11 |
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Effective date of registration: 20031230 Address after: 310027 Department of Opto electronics, School of information, Zhejiang University, Hangzhou, Zhejiang, Yuquan Applicant after: Zhejiang University Address before: 310013 room 46, 201 village, Qiushi village, Hangzhou, Xihu District, Zhejiang Applicant before: Fu Jian |
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