阅读说明：本技术 一种遮光带全年不移动的散射辐射仪及其遮光方法 (Scattered radiation instrument with shading belt not moving all year round and shading method thereof ) 是由 陈子乾 程海莹 孙文红 何开岩 于 2021-07-19 设计创作，主要内容包括：本发明提供一种遮光带全年不移动的散射辐射仪及其遮光方法,涉及太阳散射辐射测量技术领域,本发明通过采用四种纯几何的计算方法来计算在各向同性条件下的遮光带修正因子式的计算式,在相同的前提条件下四种推导方法所得的数值结果一样,确保了计算式的准确性,此外在保障遮光带全年不需移动的情形下,遮光带的最小宽度与纬度和倾角有关,为了便于生产,遮光带的最大宽度不小于北半球所有纬度下遮光带全年不需移动所要求的遮光带的最小宽度,同时将遮光带的宽度设计为可拉伸收缩的装置,以保障遮光带全年不需移动的功能同时又减少不必要的天空散射辐射的遮挡。(The invention provides a scattering radiometer with a shading band not moving all the year round and a shading method thereof, relating to the technical field of solar scattering radiation measurement, the invention adopts four pure geometric calculation methods to calculate a calculation formula of a shading band correction factor under an isotropic condition, under the same precondition, the numerical results obtained by the four derivation methods are the same, the accuracy of the calculation formula is ensured, in addition, under the condition that the shading belt does not need to move all the year round, the minimum width of the shading belt is related to the latitude and the inclination angle, for the convenience of production, the maximum width of the shading band is not less than the minimum width of the shading band required by the shading band which does not need to move all the year around in all latitudes of the northern hemisphere, meanwhile, the width of the shading band is designed to be a device capable of stretching and contracting, so that the function that the shading band does not need to move all the year around is guaranteed, and meanwhile, the shielding of unnecessary sky scattered radiation is reduced.)

1. A scattering radiometer with a shading band which does not move all the year round and a shading method thereof are characterized in that: including base (1), base (1) roof central point puts fixed mounting and has heel post (2), the both sides position fixed mounting of base (1) has two pillars (6), heel post (2) top fixedly connected with reflecting disc (7), central fixedly connected with total radiation table (8) of reflecting disc (7) top, two the top of pillar (6) is being fixed and is being shaded area (3), shading area (3) with fixed knob (4) are being connected in the outside of pillar (6) fixed department, rotatable angle scale (5) are being connected in fixed knob (4), install shrink groove (9) on shading area (3), the collapsible part of shading area (3) is carved with scale mark (10) of reference shrinkage.

2. The scattered radiation instrument with the shading band not moving all year round and the shading method thereof according to claim 1, characterized in that: the outer side of the fixing position of the shading belt (3) and the supporting column (6) is connected with a fixing knob (4).

3. The scattered radiation instrument with the shading band not moving all year round and the shading method thereof according to claim 1, characterized in that: the fixed knob (4) is connected with a rotatable angle dial (5).

4. The scattered radiation instrument with the shading band not moving all year round and the shading method thereof according to claim 1, characterized in that: the shading method comprises the following steps:

s1, selecting the width of a shading band, wherein when the sensor is positioned on a horizontal plane in a northern hemisphere, the center of the shading band is superposed with the center of the sensor, and the shading band is arranged perpendicular to a polar axis;

s2, carrying out integral derivation on the shading band correction factor under a horizontal coordinate system according to the shading band correction factor calculation formula;

and S3, deducing a shading band correction factor integral expression under a celestial coordinate system.

Technical Field

The invention relates to the technical field of solar scattered radiation measurement, in particular to a scattered radiation meter with a shading band which does not move all the year round and a shading method thereof.

Background

Compared with a device which uses a sun tracking system to measure the direct solar radiation and the scattering, the device which is manufactured by adding the shading band to block the direct solar radiation on the basis of the total solar radiation instrument has the advantages of low manufacturing cost and maintenance cost, simple operation and low failure rate.

The shading bands of the scattering irradiators with shading bands used by us at present are moved and adjusted at certain intervals so that the shading bands can also shield the sensor from direct sunlight when the sun moves. When measuring device is numerous, regularly adjust the position of shading area and can consume a large amount of manpower and materials, be unfavorable for the development of remote monitoring field in the radiation measurement field. A novel scattering irradiator is provided, and a shading band of the novel scattering irradiator does not need to move all the year around on the premise that the latitude and the inclined plane of a sensor are fixed. Since the shading band also shades a part of sky scattered radiation in addition to the direct solar radiation, the scattered radiation value measured by the scattered radiation meter needs to be corrected. On an isotropic basis, four different pure geometric calculation methods are used herein to give shading band correction factors suitable for the scatter irradiator.

Compared with the scattering irradiator with the shading band needing to move all the year around, the scattering irradiator with the shading band not moving all the year around has the advantages of simpler and more convenient operation, no shading band moving device, low cost and low failure rate.

Therefore, a new scattering radiometer with a shading belt which does not move all the year round and a shading method thereof are developed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a scattering radiation instrument with a shading belt which does not move all the year round and a shading method thereof, and solves the problems.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a scattering radiometer with a shading band which does not move all the year round and a shading method thereof are characterized in that: the utility model discloses a lamp shade, including the base, base roof central point puts fixed mounting and has the heel post, the both sides position fixed mounting of base has two pillars, heel post top fixedly connected with reflecting disc, the total radiometer of central fixedly connected with of reflecting disc top, two the top of pillar is being fixed and is being shaded the area, shading area with fixed knob is being connected in the outside of pillar fixed department, fixed knob is being connected rotatable angle scale, install the shrink groove on the shading area, shading area collapsible part is carved with the scale mark of reference shrinkage, shading area with fixed knob is being connected in the outside of pillar fixed department, fixed knob is being connected rotatable angle scale.

Preferably, the light shielding method of the scattered radiation instrument comprises the following steps:

s1, selecting the width of a shading band, wherein when the sensor is positioned on a horizontal plane in a northern hemisphere, the center of the shading band is superposed with the center of the sensor, and the shading band is arranged perpendicular to a polar axis;

s2, carrying out integral derivation on the shading band correction factor under a horizontal coordinate system according to the shading band correction factor calculation formula;

and S3, deducing a shading band correction factor integral expression under a celestial coordinate system.

(III) advantageous effects

The invention provides a scattering radiometer with a shading belt not moving all the year round and a shading method thereof. The method has the following beneficial effects:

1. according to the scattering radiometer without moving shading band all the year round and the shading method thereof, the calculation formula of the shading band correction factor formula is deduced by adopting four different calculation methods, the calculation formulas obtained by the four derivation methods are subjected to numerical operation, the obtained numerical results are the same, and the accuracy of the calculation formula is ensured.

2. According to the scattering radiometer with the shading belt not moving all the year round and the shading method thereof, the effect that the whole device does not move all the year round can be achieved through the shading belt capable of stretching and contracting, the cost of the lower moving device can be saved, the operation is simpler and more convenient, errors are reduced, and the failure rate of the radiometer is reduced.

Drawings

FIG. 1 is a first schematic diagram of the present invention;

FIG. 2 is a second schematic diagram of the present invention;

FIG. 3 is a third schematic diagram of the structure of the present invention;

FIG. 4 is a side view of the present invention;

FIG. 5 is a front view of the present invention;

FIG. 6 is a top view of the present invention.

Wherein, 1, a base; 2. a load-bearing column; 3. a light-shielding tape; 4. a fixed button; 5. an angle scale; 6. a pillar; 7. a reflective disk; 8. a total radiation meter; 9. a contraction groove; 10. scale lines are marked.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 4, 5 and 6, an embodiment of the invention introduces a scattering radiometer with a shading band not moving all the year round and a corresponding shading band correction factor type calculation method, which includes a base 1, a bearing column 2 for bearing a total radiometer and a reflecting disc is fixedly installed at the center position of the top wall of the base 1, two supporting columns 6 for supporting the shading band are fixedly installed at the positions of two sides of the base 1, a reflecting disc 7 is fixedly connected above the bearing column 2, a total radiation meter 8 is fixedly connected at the center above the reflecting disc 7, the shading bands 3 are fixed at the top ends of the two supporting columns 6, a fixed knob 4 capable of fixing the shading band to be immobile is connected at the outer side of the fixing position of the shading bands 3 and the supporting columns 6, and the fixed knob 4 is connected with a rotatable angle dial 5. The shading belt 3 is driven to rotate by the rotation angle dial 5 to form an inclination angle corresponding to the local latitude, so that the installation of the scattering radiation instrument is realized when the scattering radiation instrument is suitable for different latitudes. The light-shielding belt 3 is provided with a contraction groove 9, and the width of the contractible part of the light-shielding belt 3 is the difference between the maximum value and the minimum value of the width of the light-shielding belt for realizing the effect that the light-shielding belt does not move all the year round under all latitudes of the northern hemisphere. The retractable part of the shading band 3 is engraved with scale lines 10 for reference shrinkage, which can realize the function that the shading band does not need to be moved all the year round and reduce the shielding of unnecessary sky scattered radiation, and meanwhile, the cost of the mobile device is remained, and the shading band does not need to be moved all the year round, so that the operation is simpler and more convenient, the error is reduced, and the failure rate of the instrument is reduced.

Example two:

the difference between the present embodiment and the first embodiment is: the method for calculating the shading band correction factor comprises the following steps:

s1, selecting the width of a shading band, wherein the inclination angles of planes where sensors are located in a northern hemisphere can be different, as shown in figure 1, the geometric center of the shading band is overlapped with the center of the sensor, and the shading band is placed perpendicular to a polar axis;

s2, carrying out integral derivation on the shading band correction factor under a horizontal coordinate system according to the shading band correction factor calculation formula, wherein in the horizontal coordinate system, when the sensor is positioned on an inclined plane with an inclination angle beta, the initial placement position of the shading band is shown in FIG. 2;

and S3, carrying out derivation of the shading band correction factor integral expression under an celestial coordinate system according to the shading band correction factor calculation expression, wherein in the celestial coordinate system, when the sensor is positioned on an inclined plane with an inclination angle beta, the position where the shading band is initially placed is shown in FIG. 3. The invention adopts the calculation formula of the shading band correction factor type of four calculation methods, and the results obtained by adopting numerical software in the four derivation methods are consistent, thereby ensuring the accuracy of the calculation formula.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.