CN2558976Y - Intensity modulated optic sensing temp. monitoring device - Google Patents
Intensity modulated optic sensing temp. monitoring device Download PDFInfo
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- CN2558976Y CN2558976Y CN 02265255 CN02265255U CN2558976Y CN 2558976 Y CN2558976 Y CN 2558976Y CN 02265255 CN02265255 CN 02265255 CN 02265255 U CN02265255 U CN 02265255U CN 2558976 Y CN2558976 Y CN 2558976Y
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Abstract
The utility model relates to an intensity modulation type optical sensing temperature monitoring device, which combines the optical technique and a traditional temperature measurement way, the structure of the device is simple, and the cost is cheap. The device is provided with an optical path component, and an anti dazzling screen arranged on an optical path or an optical attenuation screen, the optical path or the optic attenuation screen are arranged on a temperature sensing component composed of two kinds of materials with different thermal expansion coefficients. A beam of light transmitted from a transmitter of the optical path component radiates on a receiver and is received by the receiver, or a beam of light transmitted from the transmitter radiates on a reflecting mirror, and is reflected in the receiver to be received, and connected with a processing device through a receiver output light signal. The anti dazzling screen and the optical attenuation screen are arranged in the optical path, the temperature sensing component can lead the anti dazzling screen and the optic attenuation screen to moving in the optical path, to lead the optical path to being lost and changed along with the temperature change of a temperature measuring point, to lead light power received by the receiver to being changed, therefore, the temperature of a measured object can be measured. The utility model is suitable for occasions where a contact type teletex temperature sensing method can not be adopted.
Description
Technical field
The present utility model belongs to the temperature monitoring technology, relates to photoelectric sensing remote temperature monitoring device.
Background technology
Temperature sensor technology is one of sensing technology that is most widely used in commercial production and the daily life, and the measurement and the monitoring that utilize temperature sensor technology to carry out temperature are extremely important in commercial production and daily life.Present widely used temperature monitoring technology is mainly used contact fax sense technology, for example thermojunction type, thermal resistance type, ic-type equitemperature sensing technology.But these technology are using the certain difficulty of existence in some cases, for example in fields such as EHV transmission equipment, combustible and explosive articles, conductive bodies.In the temperature monitoring of EHV transmission equipment, owing to be in the strong-electromagnetic field, general contact fax sensing temperature method is difficult to solve Insulation Problems and electromagnetic interference problem.In the temperature monitoring of combustible and explosive articles, owing to the fax sensing mode causes that easily electric spark causes danger.In the temperature monitoring of conductive body, because the influence of temperature detector rerum natura causes thermometric accuracy to descend.
Be example below with the extra high voltage network, describe some shortcomings of existing temperature monitoring technology in detail.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.Chinese patent application number is 02112192.3 and is called " photo-electric device for detecting temperature ".A light path member is fixedly mounted on the temperature-sensitive member that is made of two kinds of materials having different thermal expansion coefficient, and the light path member can be that the light-beam transmitter and the beam receiver that constitute the direct projection light path also can be to constitute the light-beam transmitter of reflected light path and the combination of beam receiver and catoptron.On receiver and be received, perhaps a branch of illumination from the transmitter emission is mapped on the catoptron, is reflected in the receiver to receive, and is connected with treating apparatus by receiver output light signal from a branch of rayed of transmitter emission.The temperature-sensitive member can cause light path to depart from the temperature variation of point for measuring temperature, there is certain relation in the two, and the size of the luminous power that receives from receiver can indicate the size of bias, thereby can record the temperature of testee.Utilize the full optical means to carry out temperature survey and signal transmission, solved problems such as insulation in the strong-electromagnetic field and interference preferably.But because temperature-sensitive member two ends are fixedly mounted on the web member, its sensing temperature is sensitive inadequately, and is unfavorable for the large-scale temperature variation of point for measuring temperature is realized more high-precision measurement.
Summary of the invention
The present utility model provides a kind of intensity modulation type light-sensing temperature monitoring device, can overcome the shortcoming of prior art, further simplified structure has reduced the volume of temperature probe, and make sensing temperature more sensitive, can realize more high-precision measurement the large-scale temperature variation of point for measuring temperature.
To achieve these goals, its technical scheme is to comprise the light path member the same with above-mentioned patent, the support rack type that is made of two kinds of materials having different thermal expansion coefficient or the temperature-sensitive member of bimetallic strip type, and signal processing apparatus.Design feature is that temperature-sensitive member cantilever is connected on the support, and the optical attenuation member that will be installed on the temperature-sensitive member is placed in the light path of light path member formation, be received by the receiver from of the decay of light-beam transmitter emitted light beams through the optical attenuation member, export light signal to treating apparatus by receiver, realize functions such as opto-electronic conversion, signal amplification, data processing, record demonstration or warning, can carry out high-precision measurement monitoring to the temperature of testee by the power indication that receives light signal.
The optical attenuation member can serve as reasons light not the anti-dazzling screen made of the material of transmissive constitute or constitute by the optical attenuation sheet that produces the transmitted light decay.The temperature-sensitive member drives anti-dazzling screen and moves the logical light area that has changed light path, thus the decay that has produced luminous power.Anti-dazzling screen can by various light not the material of transmissive make, more convenient is can be directly be made of the part of temperature-sensitive member.The optical attenuation sheet can also can be the type variable optical attenuation sheet that changes along a direction attenuation rate for the attenuator of fixed attenuation rate.When the temperature-sensitive member makes the position of type variable optical attenuation sheet change, light path produces different attenuation rate by the diverse location of type variable optical attenuation sheet, can arrive the effect to the testee thermometric equally.
Though the version of temperature-sensitive member and light path member has multiple choices in the device, comes from same design, temperature-measurement principle is identical with method.
The beneficial effect of innovation and creation:
(1) this device combines the optical attenuation member with the temperature-sensitive member, temperature-sensitive member cantilever is installed, make temperature-sensitive member thermal expansion distortion more sensitive, cause the optical attenuation member in light path, to move, cause the change of optical signal power, by the light signal transmission, the large-scale temperature variation of point for measuring temperature is realized more high-precision measurement;
(2) this device has solved the insulation in the strong-electromagnetic field, interference problem fully, the safety problem of combustible and explosive articles, and measurement accuracy problem or the like makes this device be applicable under the various situations the accurate measurement of temperature and monitoring reliably.
Description of drawings
Fig. 1 is the structural representation of example 1;
Fig. 2 is the structural representation of example 2;
Fig. 3 is that the structure of example 3 is not intended to;
Fig. 4 is the structural representation of example 4.
Embodiment:
Describe the embodiment of technical scheme in detail with reference to accompanying drawing.
Example 1: as shown in Figure 1, the transmitter 4 and the receiver 7 that constitute the light path member are fixedly mounted on the base 13 by web member 3 and web member 8 respectively, optical attenuation member 12 is installed on the bimetallic strip temperature-sensitive member 5, optical attenuation member 12 is placed in the light path of light path member formation, and temperature-sensitive member 5 cantilevers are fixedly mounted on the base 13.Incident light 1 is converted into light beam 6 via optical fiber 2 by transmitter 4, shines on the receiver 7 through optical attenuation member 12; Bimetallic strip temperature-sensitive member 5 contacts with point for measuring temperature or is close as far as possible, and the light signal that receiver 7 receives is transferred to treating apparatus 9 by optical fiber 10.Treating apparatus has functional devices such as opto-electronic conversion, signal amplification, data processing, record demonstration, warning.When the temperature of point for measuring temperature changes, the temperature of bimetallic strip temperature-sensitive member 5 can change thereupon, because the stress that thermal expansion produces in the bimetallic strip causes bimetallic strip to produce a certain amount of bending, and has certain linear between temperature variation and the flexibility.Moved in light path by the crooked optical attenuation member 12 that drives of bimetallic strip, optical attenuation member 12 parts are blocked or the light beam 6 of having decayed, and along with the change in location of optical attenuation member 12, the power that light beam 6 is received device 7 received luminous powers can change thereupon.Therefore, test the watt level that from receiver 7, receives, can determine the temperature variation of measured body, through recording the temperature value of measured body after the calibration.Because the power of light signal has directly reflected the temperature of testee, therefore only need the luminous power power that receive be detected, thereby draw the temperature of testee, reach the purpose of temperature monitoring or monitoring.In summary, temperature-sensitive member cantilever is installed, and makes temperature-sensitive member thermal expansion distortion more sensitive, can carry out direct more high-precision measurement and not need to increase the number of receiver the big range of temperature of testee.The precision of measuring temperature mainly depends on the detection accuracy of luminous power and the quantitative relationship between bimetallic strip deformation amplitude and the temperature variation.Because flashlight is sent to by optical fiber 10 and handles at a distance again, therefore can accomplish high pressure insulated fully is not subjected to the interference of extraneous strong-electromagnetic field, without any danger, is not subjected to influence of thermometric material rerum natura or the like to inflammable and explosive.This device volume is little, and precision and reliability height are very suitable for being installed in small device inside, space.
Example 2: as shown in Figure 2, adopt the temperature-sensitive member same, but the light path member adopts reflection-type with example 1.Device 4 and catoptron 11 as transmitter and receiver is fixedly mounted on the base 13 by web member 3 and web member 8 respectively simultaneously.Identical with example 1, optical attenuation member 12 is installed on the bimetallic strip temperature-sensitive member 5, and optical attenuation member 12 is placed in the light path of light path member formation, and temperature-sensitive member 5 is fixedly mounted on the base 13.Incident light 1 is converted into light beam 6 via optical fiber 2 by transmitter 4 and shines on the catoptron 11 through optical attenuation member 12, and the light of mirror reflects is received device 4 through optical attenuation member 12 once more and receives.Because point for measuring temperature temperature variation, cause the bending of bimetallic strip 5 to cause optical attenuation member 12 mounted thereto in light path, to move, optical attenuation member 12 parts are blocked or the light beam 6 of having decayed, and along with the change in location of optical attenuation member 12, thereby the luminous power that makes catoptron 11 reflex on the receiver 4 changes thereupon.The light signal that receiver 4 receives is transferred in the reflected light separation vessel 14 by optical fiber 2, and reflected light separation vessel 14 can be made of photo-coupler or optical circulator etc., and reflected light signal is split in another root optical fiber 15, is transferred to then in the treating apparatus 9.
What example 3 and example 1 were different is the bimetallic strip 5 that the temperature-sensitive member adopts U type structure.As shown in Figure 3, an end of U type bimetallic strip two arms is installed optical attenuation member 12, and the other end is fixedly mounted on the base 13.When temperature changes, the subtended angle of U-shaped structure can change, thereby change the position of optical attenuation member 12 in light path, make luminous power and the testee temperature correlation that receiver 7 receives, reach the purpose of monitor temperature by the power of measuring light signal power.
Example 4: as shown in Figure 4, optical attenuation member 12 is identical with example 3 with the mounting means of bimetallic strip 5; All the other light path members installation connections and functional relationship are with example 2.
Claims (5)
1. intensity modulation type light-sensing temperature monitoring device, comprise light path member, temperature-sensitive member and signal processing apparatus, the optical attenuation member that it is characterized in that being installed on the temperature-sensitive member is placed in the light path of light path member formation, temperature-sensitive member cantilever is connected on the base, be received by the receiver from of the decay of light-beam transmitter emitted light beams, export light signal to treating apparatus by receiver through the optical attenuation member.
2. by the described intensity modulation type light-sensing temperature of claim 1 monitoring device, it is characterized in that the optical attenuation member by light not the anti-dazzling screen made of the material of transmissive constitute.
3. by the described intensity modulation type light-sensing temperature of claim 1 monitoring device, it is characterized in that the optical attenuation member is made of the optical attenuation sheet that produces the transmitted light decay.
4. by claim 1 or 2 or 3 described intensity modulation type light-sensing temperature monitoring devices, it is characterized in that the optical attenuation member is installed on the bimetallic strip temperature-sensitive member (5), incident light (1) is converted into light beam (6) via optical fiber (2) by light-beam transmitter (4) and shines on the receiver (7) through optical attenuation member (12), and the light signal that receiver (7) receives is transferred to treating apparatus (9) by optical fiber (10).
5. by claim 1 or 2 or 3 described intensity modulation type light-sensing temperature monitoring devices, it is characterized in that incident light (1) is converted into light beam (6) via optical fiber (2) by transmitter (4) and shines on the catoptron (11) through optical attenuation member (12), the light of mirror reflects is received device (4) and receives; The light signal that receiver (4) receives is transferred to reflected light separation vessel (14) by optical fiber (2), and reflected light is transferred to treating apparatus (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265255 CN2558976Y (en) | 2002-07-01 | 2002-07-01 | Intensity modulated optic sensing temp. monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265255 CN2558976Y (en) | 2002-07-01 | 2002-07-01 | Intensity modulated optic sensing temp. monitoring device |
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| CN2558976Y true CN2558976Y (en) | 2003-07-02 |
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| CN 02265255 Expired - Fee Related CN2558976Y (en) | 2002-07-01 | 2002-07-01 | Intensity modulated optic sensing temp. monitoring device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347530C (en) * | 2003-10-24 | 2007-11-07 | 清华大学 | Floating potentical body type for high voltage power equipment on-line sensor for abnormel-temp. |
| CN102637338A (en) * | 2012-04-10 | 2012-08-15 | 武汉发博科技有限公司 | Reflecting point-type optical fiber temperature-sensing fire detector and manufacturing method thereof |
| CN102637336A (en) * | 2012-04-10 | 2012-08-15 | 武汉发博科技有限公司 | Reciprocal point-type optical fiber temperature-sensing fire detector and manufacturing method thereof |
| TWI449887B (en) * | 2012-05-24 | 2014-08-21 | ||
| CN105466467A (en) * | 2015-12-21 | 2016-04-06 | 苏州翠南电子科技有限公司 | Photoelectric sensor |
| CN109682494A (en) * | 2019-01-31 | 2019-04-26 | 珠海艾文科技有限公司 | Temperature jump fiber switch and Temperature jump fiber switch system |
| CN110672223A (en) * | 2019-10-21 | 2020-01-10 | 西安工业大学 | Method for measuring ambient temperature and electroless temperature sensor |
| CN113074829A (en) * | 2021-04-30 | 2021-07-06 | 西安邮电大学 | Temperature detection device and system |
-
2002
- 2002-07-01 CN CN 02265255 patent/CN2558976Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347530C (en) * | 2003-10-24 | 2007-11-07 | 清华大学 | Floating potentical body type for high voltage power equipment on-line sensor for abnormel-temp. |
| CN102637338A (en) * | 2012-04-10 | 2012-08-15 | 武汉发博科技有限公司 | Reflecting point-type optical fiber temperature-sensing fire detector and manufacturing method thereof |
| CN102637336A (en) * | 2012-04-10 | 2012-08-15 | 武汉发博科技有限公司 | Reciprocal point-type optical fiber temperature-sensing fire detector and manufacturing method thereof |
| CN102637336B (en) * | 2012-04-10 | 2014-01-01 | 武汉发博科技有限公司 | Reciprocal point-type optical fiber temperature-sensing fire detector and manufacturing method thereof |
| TWI449887B (en) * | 2012-05-24 | 2014-08-21 | ||
| CN105466467A (en) * | 2015-12-21 | 2016-04-06 | 苏州翠南电子科技有限公司 | Photoelectric sensor |
| CN109682494A (en) * | 2019-01-31 | 2019-04-26 | 珠海艾文科技有限公司 | Temperature jump fiber switch and Temperature jump fiber switch system |
| CN110672223A (en) * | 2019-10-21 | 2020-01-10 | 西安工业大学 | Method for measuring ambient temperature and electroless temperature sensor |
| CN113074829A (en) * | 2021-04-30 | 2021-07-06 | 西安邮电大学 | Temperature detection device and system |
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| Date | Code | Title | Description |
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| 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 |