CN102253430B - Photo-thermal type electrical logging sunshine recorder - Google Patents
Photo-thermal type electrical logging sunshine recorder Download PDFInfo
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- CN102253430B CN102253430B CN201110106730A CN201110106730A CN102253430B CN 102253430 B CN102253430 B CN 102253430B CN 201110106730 A CN201110106730 A CN 201110106730A CN 201110106730 A CN201110106730 A CN 201110106730A CN 102253430 B CN102253430 B CN 102253430B
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Abstract
The invention provides a photo-thermal type sunshine recorder. In the sunshine recorder, fine metal wires A and B with different Seebeck coefficients are connected in a sequence of ABA or BAB, two joints of the three segments of the fine metal wires form two thermocouples, and the fine metal wires and the joints are blackened; and the metal wires are fixed in a direction vertical to an ecliptic plane, one of the two thermocouples is covered by one narrow shading ring; and signals can be acquired from two leading-out terminals of the metal fires, the intensity of sunshine is measured by measuring the thermoelectromotive force of the two terminals, and the difference is only related to the direct radiation value due to opposite polarities of the two thermoelectromotive forces.
Description
Technical field
The present invention relates to the solar radiant energy field of measurement, particularly relate to a kind of photo-thermal type measuring method at sunshine and sunshine recorder.
Background technology
Sunshine recorder is an instrument of measuring sunshine-duration length, and International Meteorological Organization is defined in solar spectrum (0.3-3 μ m) direct solar radiation in has been regarded as sunshine during greater than 120W/M2.The electrical measurement sunshine recorder is divided into two types on photoelectric type and photo-thermal type.Tradition Kang Pei stoke sunshine recorder and dark-tube sunshine recorder (claiming the Qiao Tangshi sunshine recorder again) are non-electrical measurement sunshine recorder.
The sensor of photoelectric type sunshine recorder is all kinds of Electrophotosensitive original papers (silicon photocell, photoresistance etc.); The shortcoming of this quasi-instrument is 1, do not have a kind of photoelectric sensor can cover the whole spectrum in the 0.3-3 μ m, and the spectral distribution time error that influences the sun in morning and evening or visibility variation is bigger.2, such element senses face is the plane, has the direction cosine effect.Thereby must introduce follower or place the computing estimation that a plurality of sensors carry out direct radiation, the former makes reliability reduce.The latter certainly exists estimation error.
Photo-thermal type sensor is that the thermal effect through measuring radiation detects solar radiation.Typical photo-thermal sunshine recorder is the bimetallic strip of blacking.Produce thermograde and thereby deformation takes place promote the contact and send signal when receiving when shining upon bimetallic strip.There is the cosine effect equally in bimetallic strip, therefore when adopting this kind photo-thermal sensor production sunshine recorder, also need place a plurality of bimetallic strips by circumference.
Summary of the invention
The present invention seeks to: propose a kind of material that uses effect such as Seebeck and carry out method and the sunshine recorder measured sunshine.Especially be prepared into thermopair and carry out sunshine and measure, need not to follow the tracks of need not to install a plurality of sensors again and just can conveniently measure.
Technical scheme of the present invention is: the method and the sunshine recorder of the measurement at sunshine of photo-thermal type; The fine wire that two kinds of Seebeck coefficients of A and B are different is connected by the order of ABA or BAB, and three sections fine wires have two tie points and constitute thermopair and fine wire and the equal blacking of tie point to guarantee the full spectral absorption of radiation energy.Be formed with two thermopairs on this section tinsel that connect into this moment.Be fixed on this section tinsel on the direction of vertical ecliptic plane then, cover in two thermocouples with a narrow shade, make it to receive the direct radiation of the sun but can also receive the overwhelming majority sky radiation.In order to reduce air heat conduction, improve and measure sensitivity, especially can tinsel be placed in the vacuum quartz glass tube.
Keep these two end points wiry under uniform temp, the thermopower of measuring two end points can obtain intensity of sunshine.Its reason is that the radiation energy that thermopair received of not shading is that direct radiation adds sky radiation, and is only received the scattered radiation of sky by the thermopair of shading, and two thermopoweves are opposite polarity in the loop.So cause whole loop thermopower only relevant with the direct radiation of the sun.
The invention has the beneficial effects as follows: because tinsel perpendicular to ecliptic plane, is isotropic on ecliptic plane, it is very simple therefore to make this sunshine recorder use install, and not only need not tracking but also need not to install a plurality of sensors.
Description of drawings
Fig. 1 is formation structure of the present invention and principle schematic
1 representes not shading thermopair, 2 expression quartz glass tubes, 3 expression shading thermopairs, 4 expression shades, 5 expressions exit wiry among the figure.
Embodiment
Sunshine recorder according to the invention is in series by not shading thermopair of two blackings 1 and shading thermopair 3 and constitutes.Tinsel is placed in the quartz glass tube 2 of inner vacuum.At shading thermopair external fixation one circle shade 4 is arranged.Signal is obtained by two exits 5 wiry.During use quartz glass tube is installed perpendicular to sun ecliptic plane.。Measure the size that thermopower wiry can obtain the direct solar radiation value.The material that the present invention selects: metal material makes up---nisiloy, copper nickel---copper etc., and semi-conductor thermoelectric material like nickel chromium triangle: bismuth tellurium antimony alloy, Bi
2Te
3, PbTe or Si-Ge series material all can be used as material of the present invention.The thermoelectric effect of utilizing Seebeck effect to produce is when by two kinds of different conductor a, open circuit that b constitutes, if its contact (being thermopair) 1,3 remains on respectively under different temperature T1 (low temperature), the T2 (high temperature); Then produce electromotive force (thermoelectrical potential) in the loop; This phenomenon is called Seebeck effect, and its induction electromotive force is proportional to contact temperature T1, and T2's is poor; Scale-up factor S (T) is called thermoelectric power or Seebeck coefficient, and unit is μ V/K.
Measure the thermopower of two end points of whole tinsel and measure intensity of sunshine.Because two thermoelectrical potential polarity are opposite, its difference is just only relevant with the direct radiation value.Utilize the present invention can extend more complicated measurement scheme, but the present invention has provided fundamental method and device.
Claims (4)
1. method of measuring at photo-thermal type sunshine; It is characterized in that the fine wire that two kinds of Seebeck coefficients of A and B are different is connected by the order of ABA or BAB, three sections fine wires have two tie points and constitute two thermopairs and fine wire and the equal blacking of tie point to guarantee the full spectral absorption of radiation energy; These three sections tinsels are fixed on the direction of vertical ecliptic plane, cover in two thermopairs with a narrow shade, make it to receive the direct radiation of the sun but can also receive the overwhelming majority sky radiation; Keep these two end points wiry under uniform temp, the thermopower of measuring two end points can obtain intensity of sunshine.
2. the method for photo-thermal type according to claim 1 measurement at sunshine is characterized in that tinsel is placed in the vacuum quartz glass tube.
3. a photo-thermal type sunshine recorder is characterized in that the fine wire that two kinds of Seebeck coefficients of A and B are different is connected by the order of ABA or BAB, and three sections fine wires have two tie points and constitute two thermopairs and fine wire and the equal blacking of tie point; These three sections tinsels are fixed on the direction of vertical ecliptic plane, cover in two thermopairs with a narrow shade, signal is obtained by two exits wiry; These two end points wiry are under uniform temp, and the thermopower of measuring two end points can obtain intensity of sunshine.
4. photo-thermal type sunshine recorder according to claim 3 is characterized in that tinsel is placed in the vacuum quartz glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110106730A CN102253430B (en) | 2011-04-27 | 2011-04-27 | Photo-thermal type electrical logging sunshine recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110106730A CN102253430B (en) | 2011-04-27 | 2011-04-27 | Photo-thermal type electrical logging sunshine recorder |
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| Publication Number | Publication Date |
|---|---|
| CN102253430A CN102253430A (en) | 2011-11-23 |
| CN102253430B true CN102253430B (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110106730A Active CN102253430B (en) | 2011-04-27 | 2011-04-27 | Photo-thermal type electrical logging sunshine recorder |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257374B (en) * | 2013-05-17 | 2015-03-25 | 江苏省无线电科学研究所有限公司 | High-precision sun exposure sensor and measuring method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203963U (en) * | 1987-03-25 | 1988-01-06 | 于治信 | Undertube sunshine recorder with new type positioning device |
| EP0859245A1 (en) * | 1997-02-14 | 1998-08-19 | Somfy | Combined wind and sunshine measuring device |
| CN201434725Y (en) * | 2009-07-15 | 2010-03-31 | 中国科学院沈阳应用生态研究所 | Simple diffuse solar radiation meter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60154127A (en) * | 1984-01-24 | 1985-08-13 | Agency Of Ind Science & Technol | Sky infrared radiometer |
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2011
- 2011-04-27 CN CN201110106730A patent/CN102253430B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203963U (en) * | 1987-03-25 | 1988-01-06 | 于治信 | Undertube sunshine recorder with new type positioning device |
| EP0859245A1 (en) * | 1997-02-14 | 1998-08-19 | Somfy | Combined wind and sunshine measuring device |
| CN201434725Y (en) * | 2009-07-15 | 2010-03-31 | 中国科学院沈阳应用生态研究所 | Simple diffuse solar radiation meter |
Non-Patent Citations (1)
| Title |
|---|
| JP昭60-154127A 1985.08.13 |
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| CN102253430A (en) | 2011-11-23 |
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Owner name: TAIYUAN AERO-INSTRUMENTS CO., LTD. Free format text: FORMER OWNER: NANJING YINGENTE ENVIRONMENT TECHNOLOGY CO.,LTD. Effective date: 20150601 |
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Effective date of registration: 20150601 Address after: 030000 Shanxi Province, Taiyuan city district and State Road No. 137 Patentee after: Taiyuan Aero-Instruments Co., Ltd. Address before: 211100 No. 6, Kangping street, Jiangning District, Jiangsu, Nanjing Patentee before: Nanjing Yingente Environment Technology Co.,Ltd. |