CN105928630A - Radiation shield for meteorological measurement - Google Patents
Radiation shield for meteorological measurement Download PDFInfo
- Publication number
- CN105928630A CN105928630A CN201610286643.6A CN201610286643A CN105928630A CN 105928630 A CN105928630 A CN 105928630A CN 201610286643 A CN201610286643 A CN 201610286643A CN 105928630 A CN105928630 A CN 105928630A
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- conduit
- radiation shield
- reflector
- radiation
- temperature sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
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- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Radiation Pyrometers (AREA)
Abstract
The invention discloses a radiation shield for meteorological measurement, and belongs to the technical field of a meteorological instrument, for solving the technical problem of providing a radiation shield for meteorological measurement, capable of reducing sensor radiation errors and lag errors. The radiation shield comprises at least three guide tubes, the two ends of each guide tube is provided with an opening, each guide tube is internally at least provided with a temperature sensor probe, at least one guide tube has relative good ventilation whatever wind directions the radiation shield is disposed at, and thus solar radiation errors and lag errors of the temperature sensor probe can be reduced. Even if one guide tube is damaged, other guide tubes can still work normally, the whole radiation shield is little affected, and the reliability is quite good.
Description
Technical field
The present invention relates to a kind of meteorologic survey radiation shield, belong to the technical field of meteorologic instrument.
Background technology
During the temperature sensor measurement temperature of weather station, solar radiation on daytime causes temperature sensor to heat up, the air themperature of projecting environment, and the error that this phenomenon causes is referred to as solar radiation error.Night, due to the long-wave radiation of instrument, can cause the temperature air themperature less than surrounding on temperature sensor surface.In above-mentioned two situations, due to radiation-induced thermometric error, it is often collectively referred to as radiation error.Weather station thermometer screen or gravity-flow ventilation radiation shield can avoid the sun direct radiation to temperature sensor probe at present, reduce radiation error.Owing to the surface of white coating or other blade materials can not reach 100% reflectance, the most to a certain extent, tradition thermometer screen and radiation shield, especially its blade and ring plate, still can produce significant radiant temperature, causing flowing into its internal air-flow to be heated, cause the temperature sensor probe reading temperature temperature higher than external freedom air, this phenomenon causing radiation error is referred to alternatively as thermal pollution effect in meteorologic instrument field.Blade and ring plate are unfavorable for that the internal low air flow velocity of airflow, thermometer screen or radiation shield also can cause radiation error to strengthen further.Generally, it is considered that radiation shield internal gas flow velocity reduces the generation along with thermal pollution effect.Owing to all there is gap between blade and the ring plate of radiation shield of thermometer screen, always there is a certain proportion of direct solar radiation, scattering radiation and ground return radiation from gap, enter instrument internal, and it being radiated at temperature sensor probe surface, this effect also can make radiation error expand further.The radiation error of thermometer screen and radiation shield is the highest up to 1 DEG C of magnitude.The blade of thermometer screen and the ring plate of radiation shield not only cause radiation error problem, also reduce temperature sensor probe response speed, cause hysteresis error, and wooden thermometer screen is delayed up to more than 10 minutes.Owing to the thermal capacitance of thermometer screen and radiation shield is relatively big, also bring great difficulty to temperature fluctuation observation.According to traditional view, a good radiation shield design not only should make the radiation arriving temperature sensor probe surface the least, and the air velocity around temperature sensor probe should be made the biggest.Use blade or ring plate to contribute to meeting the first requirement, it can be difficult to meet the second requirement, thus be difficult to eliminate thermal pollution effect.Therefore both designs require to there is contradiction, and this brings difficulty to the raising of radiation shield performance.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is desirable to provide a kind of meteorologic survey radiation shield, the conduit using multiple two ends to have opening reduces sensor probe radiation error and improves air velocity, to some extent solves existing radiation shield and cannot improve air velocity when the requirement of the solar radiation that satisfied reduction temperature sensor probe receives and thermal pollution effect is difficult to the technical problem that eliminates.
In order to realize above-mentioned goal of the invention, adopt the following technical scheme that
A kind of meteorologic survey radiation shield, including at least 3 conduits, an at least temperature sensor probe in each conduit, the two ends of conduit are equipped with opening.Temperature sensor probe can be typically mounted at the center of conduit.Multiple temperature sensor probes can share a multi channel signals modulate circuit, it is also possible to arranges multiple signal conditioning circuit, measures each probe respectively.The cross section of conduit both ends open can be that polygon is circular or oval.
For ease of describing orientation, here from conduit, vertically landing ground and the vertical direction facing to high-altitude are respectively defined as downwardly and upwardly, the direction of catheter center's axis are defined as the direction of conduit.For reaching to prevent the effect of sun direct irradiation conduit, can arrange reflector and be positioned at above conduit, each conduit is distributed in the region that reflector blocks along reflector edge.Reflector can have one can also have multiple.If any multiple reflectors, it is equipped with a reflector can to each conduit.The material that reflector is selected can select metal, reflector surface can arrange one layer of silverskin, to improve reflectance.Reflector can be disk or other shape, if reflector is discoid, then conduit can be arranged in circle along disk border in the region that reflector blocks, when conduit quantity is not less than 6, between the angle between adjacent catheter may be configured as spending between 5 to 60.If reflector is non-when being other shape beyond discoid, then conduit can along the edge of reflector in the lower zone that reflector blocks arbitrary arrangement.
For reducing the effect of radiation error, also can be provided with at least one piece of suspension plate between conduit and reflector, suspension plate not only has the effect of suspension conduit and also has the most heat insulation effect, it is possible to decrease the heat transfer between reflector and conduit.Can be that a suspension plate joined by each conduit when suspension plate has multiple.For reaching effect fixing for conduit, connector also can be provided with between conduit and suspension plate.For reaching to prevent the effect of the conduction of heat between reflector and suspension plate, heat insulation post also can be provided with between reflector and suspension plate.
Here the conduit end face near reflector edge can be defined as end face outside.End face outside is an inclined end face, and this inclined end face reduces injects the sunray of inner surface under conduit.
For reaching to avoid morning and the effect of dusk sun direct irradiation temperature sensor probe as far as possible, can be by downward-sloping at least 2 conduits, between downward-sloping angle can be spent between 0 to 30.The direction of sunrise or the at sunset sun generally lays respectively at east or west, and therefore optional with sunrise or sunray angle is minimum at sunset at least 2 conduits are downward-sloping, these downward-sloping conduits are usual the least with the angle of east-west direction.When the downward-sloping angle of a conduit is less, and when the angle of wind direction Yu this conduit is the least, the air velocity in conduit can keep consistent with outer gas stream speed approximation, and thermal pollution effect is less.
Utilize described radiation shield to carry out thermometric method to comprise the following steps:
Step 1, obtains the temperature that the temperature sensor probe in each conduit records；
The temperature that sensor probe in step 2, relatively all conduits records, and whether be in daytime according to the measurement time, using measured value minimum for temperature as the measurement result on daytime, using measured value the highest for temperature as the measurement result at night.
The present invention uses above-mentioned technical scheme, has the advantages that
(1) radiation shield contains multiple conduit, under the conditions of any level wind direction, all there is at least one conduit relatively minimal with the angle of wind direction, therefore compare with other conduit, this conduit has relatively good ventilation, air velocity of a relatively high in conduit makes the radiation error of temperature sensor probe in conduit relatively low simultaneously, therefore this conduit can realize of a relatively high air velocity and relatively low radiation error simultaneously, the open design at conduit two ends ensure that airflow, at least one conduit has of a relatively high air velocity and achieves relatively low hysteresis error；
(2) it is provided above reflector at conduit and is prevented from sun direct irradiation conduit, each conduit makes the angle between conduit less along reflector marginal distribution in the region that reflector blocks, the airflow direction in conduit minimum with wind direction angle also with wind direction closest to, avoid the thermal pollution effect that duct wall causes to a certain extent, advantageously reduce radiation error, external catheter end side is provided with certain angle of inclination prevents sunray from injecting inner surface under conduit to a certain extent, contributes to accumulated snow, the dust and other impurities deposition reducing in conduit；
(3) improve the stability of radiation shield structure, radiation shield also includes at least one suspension plate between conduit and reflector, conduit is suspended on below suspension plate by connector, suspension plate decreases the heat transfer between reflector and conduit simultaneously, and the heat insulation post being provided with between reflector and suspension plate prevents the conduction of heat between reflector and suspension plate further；
(4) in the radiation shield that the application relates to, at least two conduits are downward-sloping when being the angle of 0 to 30 degree with horizontal direction, now, air velocity in conduit still can keep approximation consistent with outer gas stream speed, is avoided as much as morning and dusk sun direct irradiation temperature sensor probe.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the upward view of the radiation shield that the present invention relates to；
Fig. 3 is the schematic diagram of square-section conduit；
Fig. 4 is the schematic diagram of circular cross-section conduit；
Fig. 5 is the schematic diagram that conduit end face outside has certain inclination angle；
Fig. 6 is the upward view of the radiation shield comprising 10 conduits；
Fig. 7 is the upward view of the radiation shield comprising 7 conduits.
Label declaration in figure: 1, conduit, 2, reflector, 3, suspension plate, 4, connector, 5, heat insulation post, 6, center, 7, conduit upper outer surface, 8, conduit upper inner surface, 9, conduit outer lower face surface, 10, inner surface under conduit, 11, catheter interior cavity, 12, end face outside, 101, conduit, 102, conduit, 103, conduit, 104, conduit, 105, conduit, 106, conduit, 107, conduit, 108, conduit, 109, conduit, 110, conduit, 201, conduit, 202, conduit, 203, conduit, 204, conduit, 205, conduit, 206, conduit.
Detailed description of the invention
Below in conjunction with the accompanying drawings the technical scheme of invention is described in detail.
Specific embodiment one
Such as the structural representation of the present invention in Fig. 1, being equipped with the conduit 1 of opening including at least 3 two ends, each conduit is at least provided with a temperature sensor probe.Multiple temperature sensor probes can share a multi channel signals modulate circuit, it is also possible to arranges multiple signal conditioning circuit and measures each temperature sensor probe respectively.The cross section at conduit 1 two ends can be square, circle as shown in Figure 4 as shown in Figure 3, it is also possible to be polygon or ellipse.Temperature sensor probe can be typically mounted at the center 6 of conduit 1.
Multiple conduits are under the conditions of any level wind direction, all there is at least one conduit relatively minimal with the angle of wind direction, therefore compare with other conduit, this conduit has relatively good ventilation, air velocity of a relatively high in conduit makes the radiation error of temperature sensor probe in conduit relatively low simultaneously, and therefore this conduit can realize of a relatively high air velocity and relatively low radiation error simultaneously.In most cases, the most minimal amount of scattering radiation and ground return radiation can enter catheter interior the temperature sensor probe being irradiated in conduit by the opening at conduit two ends, and this advantageously reduces radiation error.
At least one conduit can realize of a relatively high air velocity, and air velocity of a relatively high in conduit can make the hysteresis error of temperature sensor probe in this conduit relatively low.
Such as the sensor probe in each conduit all through demarcating, and assume that each sensor probe is respectively provided with higher precision, the most only need the temperature that more each sensor probe records, choose by day and record the probe that temperature is minimum, choose at night and record the probe that temperature is the highest, the measurement result that radiation error is less can be obtained.
Specific embodiment two
For reaching to prevent the effect of sun direct irradiation conduit 1, as depicted in figs. 1 and 2, it is provided above reflector 2 at conduit, can be that all conduits arrange one piece of shared reflector, one piece of reflector can also be set for each conduit, each conduit along reflector marginal distribution in the region that reflector blocks.The material that reflector 2 is selected can select metal, such as, may select aluminum or aluminum alloy, not only can obtain preferable mechanical performance, and owing to reflectance is higher, temperature is too high also to make reflector be difficult to because of solar radiation.Reflector 2 surface can arrange one layer of silverskin, to improve reflectance further.
Reflector can be discoid or other shape.For circular reflecting plate, each conduit is arranged in circle along circular reflecting plate edge in reflector occlusion area, and when conduit quantity is no less than 6, the angle between adjacent catheter can be arranged between spending between 5 to 60.Fig. 6 be conduit number be the situation of 10, conduit 101, conduit 102, conduit 103, conduit 104, conduit 105, conduit 106, conduit 107, conduit 108, conduit 109, conduit 110 are evenly distributed in the region that reflector blocks along the edge of circular reflecting plate, and the angle between adjacent catheter is 36 degree；Fig. 7 be conduit number be the situation of 6, conduit 201, conduit 202, conduit 203, conduit 204, conduit 205, conduit 206 are evenly distributed in the region that reflector blocks along the edge of circular reflecting plate, and the angle between adjacent catheter is 60 degree.Can reduce radiation error and the hysteresis error of temperature sensor probe by the way of increasing conduit 1 quantity, conduit number at most can increase to 72.Conduit can also be along circular or other shape reverse tabula rasa edge arbitrary arrangement in reflector occlusion area.
Conduit 1 is defined as end face outside 12 near the end face of disk border, and conduit as shown in Figure 5 has: inner surface 10, catheter interior cavity 11, end face outside 12 under conduit upper outer surface 7, conduit upper inner surface 8, conduit outer lower face surface 9, conduit.End face outside 12 can be vertically arranged with the axis of conduit, it is possibility to have certain angle of inclination.When end face outside 12 has certain angle of inclination, sunray can be reduced to a certain extent and inject inner surface 10 under conduit, thus reduce solar radiation at catheter interior cavity 11 multiple reflections, it is achieved reduce the purpose of temperature sensor probe radiation error.This design additionally aids accumulated snow, the dust and other impurities deposition reduced in conduit.
The design of multiple conduits makes the angle between conduit less, the airflow direction in conduit minimum with wind direction angle also with wind direction closest to, so, even if the direct solar radiation on daytime, scattering radiation, reflected radiation and heat-conduction effect make the temperature of the tube wall of this conduit raise, inside conduit, heated air-flow flows also along inside tube wall, heated air-flow is not easily accessible to the position of tube wall center mounting temperature sensor probe, according to same principle, even if the tube wall temperature of this conduit reduces at night, in conduit, the air-flow of low temperature generally againsts tube wall flowing, the most this design can avoid the thermal pollution effect that duct wall causes to a certain extent, advantageously reduce radiation error.
In order to reach to avoid as far as possible the effect of sun direct irradiation temperature sensor probe sooner or later, select with sunrise or at sunset sunray angle minimum at least 2 conduits downward-sloping, between the angle tilted is spent between 0 to 30, now, the air velocity in conduit still can keep consistent approx with outer gas stream speed.By downward-sloping 10 degree of the outside of the conduit 101 of east-west direction, conduit 102, conduit 106 and conduit 107 in Fig. 6, by the conduit 201 of east-west direction in Fig. 7 and downward-sloping 10 degree of the outside of conduit 204, now, air velocity in conduit still can keep consistent approx with outer gas stream speed, and thermal pollution effect is the most relatively small.When conduit is not generally evenly distributed in disc reflector lower zone, downward-sloping 0 to 30 degree in the one end in conduit, the requirement keeping consistent to meet the air velocity in conduit still to approximate with outer gas stream speed can be selected flexibly.
Specific embodiment three
As shown in Figure 1, Figure 2, shown in Fig. 6, Fig. 7, radiation shield also includes at least one suspension plate 3 between conduit and reflector, can be that all conduits arrange one piece of shared suspension plate, one piece of suspension plate can also be set for each conduit, conduit 1 is connected through connector 4 and suspension plate 3 is fixing, the suspension effect that suspension plate 3 has improves the stability of radiation shield structure, prevents reflector 2 and conduit 1 conduction of heat simultaneously.For preventing the conduction of heat between reflector 2 and suspension plate 3 further, heat insulation post 5 also can be provided with between reflector 2 and suspension plate 3.
Experiments verify that, under same environmental conditions, temperature sensor probe radiation error can be reduced to 0.05 DEG C of magnitude by the present invention, and the radiation error of tradition thermometer screen and gravity-flow ventilation radiation shield is up to 1 DEG C of magnitude, visible, the radiation shield that the application relates to reduces temperature sensor probe radiation error.Compared with traditional vane type thermometer screen and ring plate formula radiation shield, radiation shield simple in construction, the small volume that the present invention relates to, weight is less, can reduce cost, structure is relatively easy, it is prone to processing and manufacturing, safeguards and install and cleaning, the design of multiple conduits makes radiation shield still can normally work in the case of having conduit to damage, and the reliability of radiation shield is high.Due to the reflector related in the application and the generally horizontal installation of suspension plate, therefore in high wind, stress can be reduced to a certain extent so that radiation shield be difficult to by wind or because of blast cause damage.
The above is only the preferred embodiment of the present invention; it is noted that, for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a meteorologic survey radiation shield, it is characterised in that: include that at least 3 two ends are equipped with the conduit (1) of opening, each conduit (1) is at least provided with a temperature sensor probe.
A kind of meteorologic survey radiation shield the most according to claim 1, it is characterized in that: described radiation shield also includes at least one reflector (2), described reflector (2) is positioned at the top of all conduits (1), and each conduit (1) is distributed in the region that reflector blocks along reflector edge.
A kind of meteorologic survey radiation shield the most according to claim 2, it is characterized in that: described radiation shield also includes at least one suspension plate (3) being positioned between conduit (1) and reflector (2), conduit (1) is fixed through connector (4) and suspension plate (3) and is connected.
A kind of meteorologic survey radiation shield the most according to claim 2, it is characterised in that: conduit (1) is the end face tilted near the cross section of one end, reflector edge, and described inclined end face reduces injects the sunray of inner surface under conduit.
5. according to a kind of meteorologic survey radiation shield described in claim 1 or 2 or 3 or 4, it is characterised in that: the angle of at least 2 downward-sloping 0 to 30 degree of conduit (1).
A kind of meteorologic survey radiation shield the most according to claim 1, it is characterised in that: the cross section of conduit (1) both ends open is that polygon is circular or oval.
A kind of meteorologic survey radiation shield the most according to claim 2, it is characterised in that: described reflector (2) is metal material.
A kind of meteorologic survey radiation shield the most according to claim 2, it is characterised in that: there is one layer of silverskin on described reflector (2) surface.
A kind of meteorologic survey radiation shield the most according to claim 3, it is characterised in that: it is provided with heat insulation post (5) between described reflector (2) and suspension plate (3).
10. the radiation shield utilized described in claim 1 carries out thermometric method, it is characterised in that comprise the steps:
The temperature that A, each temperature sensor probe obtained in each conduit record；
The temperature that B, each temperature sensor probe of comparison record: using minimum temperature measured value as measurement result during daytime, using maximum temperature measured value as measurement result during night.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610286643.6A CN105928630A (en) | 2016-04-29 | 2016-04-29 | Radiation shield for meteorological measurement |
| PCT/CN2017/081895 WO2017186101A1 (en) | 2016-04-29 | 2017-04-25 | Anti-radiation shield for meteorological measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610286643.6A CN105928630A (en) | 2016-04-29 | 2016-04-29 | Radiation shield for meteorological measurement |
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| CN105928630A true CN105928630A (en) | 2016-09-07 |
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| CN201610286643.6A Pending CN105928630A (en) | 2016-04-29 | 2016-04-29 | Radiation shield for meteorological measurement |
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| CN (1) | CN105928630A (en) |
| WO (1) | WO2017186101A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017186101A1 (en) * | 2016-04-29 | 2017-11-02 | 南京微感电子科技有限公司 | Anti-radiation shield for meteorological measurement |
| CN108303754A (en) * | 2018-02-23 | 2018-07-20 | 上海长望气象科技股份有限公司 | Sounding shielding and rocketsonde |
| CN111290048A (en) * | 2020-03-06 | 2020-06-16 | 南京信息工程大学 | Temperature sensor for meteorological observation |
| CN111290044A (en) * | 2020-03-06 | 2020-06-16 | 南京信息工程大学 | Temperature sensor for meteorological station |
| CN111290050A (en) * | 2020-03-06 | 2020-06-16 | 南京信息工程大学 | Temperature sensor for weather based on filiform radiator |
| CN113865744A (en) * | 2021-09-26 | 2021-12-31 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Optical fiber temperature sensor for deep space detection |
| CN114383756A (en) * | 2022-03-23 | 2022-04-22 | 中国飞机强度研究所 | Temperature measurement sensing device for aircraft solar radiation test and parameter optimization method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017186101A1 (en) * | 2016-04-29 | 2017-11-02 | 南京微感电子科技有限公司 | Anti-radiation shield for meteorological measurement |
| CN108303754A (en) * | 2018-02-23 | 2018-07-20 | 上海长望气象科技股份有限公司 | Sounding shielding and rocketsonde |
| CN111290048A (en) * | 2020-03-06 | 2020-06-16 | 南京信息工程大学 | Temperature sensor for meteorological observation |
| CN111290044A (en) * | 2020-03-06 | 2020-06-16 | 南京信息工程大学 | Temperature sensor for meteorological station |
| CN111290050A (en) * | 2020-03-06 | 2020-06-16 | 南京信息工程大学 | Temperature sensor for weather based on filiform radiator |
| CN113865744A (en) * | 2021-09-26 | 2021-12-31 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Optical fiber temperature sensor for deep space detection |
| CN114383756A (en) * | 2022-03-23 | 2022-04-22 | 中国飞机强度研究所 | Temperature measurement sensing device for aircraft solar radiation test and parameter optimization method thereof |
| CN114383756B (en) * | 2022-03-23 | 2022-06-14 | 中国飞机强度研究所 | Temperature measurement sensing device for aircraft solar radiation test and parameter optimization method thereof |
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| Publication number | Publication date |
|---|---|
| WO2017186101A1 (en) | 2017-11-02 |
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| C06 | Publication | ||
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Application publication date: 20160907 |