CN102819267B - Solar lighting simulation method with manually adjustable elevation angle - Google Patents

Abstract

Elevation angle manually adjustable solar irradiation simulator and method,Belong to sun tracker detection technique field,Apparatus of the present invention: reflecting mirror is mounted on mirror rotation mechanism,Dip measuring device is connected with reflecting mirror; Reflecting mirror rotating and regulating mechanism is mounted on one end of mirror rotation mechanism; Mirror rotation mechanism is mounted on sports platform; Sports platform is mounted on reflecting mirror horizontal displacement motion guide rail; Horizontal displacement measuring device is connected with reflecting mirror horizontal displacement motion guide rail; Solar simulator is corresponding with reflecting mirror; Method of the invention: the vertical range h value of measurement solar simulator outgoing beam center line to sun tracker; Displacement of the reflecting mirror on horizontal displacement motion guide rail is manually adjusted,Change the horizontal displacement of reflecting mirror to x ; It manually adjusts reflecting mirror rotating and regulating mechanism, adjusts the inclination angle of reflecting mirror and horizontal plane to β, ; The simulated solar irradiation of the solar elevation α needed.

Description

Simulation Method of Sunlight with Artificial Adjustable Altitude Angle

technical field

The invention belongs to the technical field of solar tracker detection, and in particular relates to a solar illumination simulation device and method with an artificially adjustable elevation angle. the

Background technique

With the development of solar energy and the increasing attention paid to sun monitoring, a large number of sun tracking devices or sun trackers that can automatically track the sun have emerged. Sun tracking devices or sun trackers are widely used in solar power generation, meteorological monitoring (solar radiation measurement, atmosphere), etc. In order to ensure tracking accuracy, most sun trackers adopt a closed-loop working mode, using photoelectric sensors such as photocells, photodiodes, and imaging devices to provide feedback on the sun's pointing deviation. In the debugging, testing and pointing accuracy inspection of sun tracking equipment or sun trackers, the sun illumination environment is one of the essential test conditions. the

One of the most direct ways to establish a solar lighting environment is to use outdoor natural sunlight to test sun tracking devices or sun trackers. The advantage of this method is that it does not require additional test equipment and is relatively simple. One of the disadvantages of the outdoor test method is that a complete test environment needs to be established outdoors, including power supply, necessary instruments and meters, etc. The second shortcoming of the outdoor test method is that it is affected by seasons and weather conditions. When the weather is dark and rainy, it is difficult to carry out the sun tracking test. The third shortcoming of the outdoor test method is the adverse effect of the outdoor environment on the sun tracking device or the sun tracker. Dust, water vapor and other substances in the air may enter the sun tracking device or the sun tracker in large quantities. For aerospace sun tracking equipment or trackers whose working environment is space, most of the sun tracking tests should be carried out in a clean room and should not be carried out outdoors due to their own expensive electronic components and precision optical components. . the

In order to facilitate the sun tracking experiments of sun tracking equipment or sun trackers in the laboratory, a solar simulation device is often required to establish a solar lighting environment. Wherein, the elevation angle of simulated sunlight can be changed. Relying on this kind of simulated sunlight with variable altitude angle, the photoelectric sensor on the sun tracking device or sun tracker can generate a feedback signal, so that the system can obtain the altitude angle deviation signal, so that the closed-loop tracking of the sun tracking device or sun tracker can be tested characteristic. With the help of the sunlight simulation device, the sun pointing accuracy of the sun tracker can be tested, including dynamic tracking accuracy and static tracking accuracy. the

Most of the solar illumination simulation methods or devices use the "single-axis turntable" scheme to test the single-degree-of-freedom solar tracking performance of the sun tracking device or sun tracker. The "single-axis turntable" scheme is as follows, in which the sun tracking device or sun tracker is placed on a single-axis rotatable turntable, and the position of the solar simulator is fixed. If the turntable rotates at a given rate, within a certain range, the azimuth or elevation angle of the simulated sunlight incident on the photoelectric feedback element of the sun tracking device will change. the

For ease of description, the simulated sunlight altitude angle in the present invention is the inclination angle between simulated sunlight and the horizontal plane. the

The existing "single-axis turntable" solar illumination simulation device has the following problems. the

The first problem is that the existing devices require that the sun tracking device or the sun tracker must be rotated on the turntable, which may damage the sun tracking device or the sun tracker. During the movement of the turntable, the sun tracking equipment or components of the sun tracker may be damaged. For example, the electrical connection wire may be severely twisted and deformed during the continuous rotation of the turntable for multiple (thousands or even tens of thousands of turns). the

The second problem is to adopt the "single-axis turntable" scheme, which generally needs to change the mechanical design of the sun tracking device or sun tracker. Considering that when the turntable rotates too fast, the sun tracking device or sun tracker on the turntable may slide, or even slide down the turntable, generally it is necessary to add fixed tooling to the turntable and the sun tracking device or sun tracker. For already formed solar tracking devices or sun tracker products, adding a mechanical device only for testing may cause a series of problems, including cost and strength. the

Contents of the invention

In order to solve the problems of the prior art, the present invention proposes a solar illumination simulation device and method with an artificially adjustable elevation angle. the

A solar illumination simulation device with an artificially adjustable elevation angle, including a solar simulator, which also includes a reflector, an inclination measuring device, a mirror rotation mechanism, a motion table, a horizontal displacement movement guide rail of the reflector, a horizontal displacement measuring device, and a solar simulator 1. The mirror rotation adjustment mechanism; the mirror is installed on the mirror rotation mechanism, and the inclination measuring device is connected with the mirror; the mirror rotation adjustment mechanism is installed at one end of the mirror rotation mechanism; the mirror rotation mechanism is installed on the movement platform; The stage is installed on the guide rail of the horizontal displacement movement of the reflector; the horizontal displacement measuring device is connected with the guide rail of the horizontal displacement movement of the reflector; the solar simulator corresponds to the reflector. the

The solar illumination simulation method with artificially adjustable elevation angle includes the following steps:

Step 1: Adjust the direction of the outgoing light of the solar simulator so that the outgoing beam of the solar simulator is parallel to the horizontal plane and irradiates the reflector, and measure the vertical distance h from the center line of the outgoing beam of the solar simulator to the sun tracking device;

Step 2: According to the required solar altitude angle α, calculate the horizontal displacement value of the reflector as x, manually adjust the displacement of the reflector on the horizontal displacement movement guide rail, and change the horizontal displacement of the reflector to x,

$x=\frac{h}{\mathrm{the\; tan}\mathrm{\α}}$ ;

Step 3: Calculate the inclination angle β between the reflector and the horizontal plane according to the required sun altitude angle α, manually adjust the rotation adjustment mechanism of the reflector, and adjust the inclination angle between the reflector and the horizontal plane to β,

$\mathrm{\β}=\frac{\mathrm{\π}}{2}-\frac{\mathrm{\α}}{2}$ ;

Obtain the simulated sunlight at the required solar elevation angle α. the

The invention has the beneficial effects that: during the whole solar illumination simulation process, the movement of the sun tracking device or the sun tracker is completely autonomous, and the sun tracking device or the sun tracker to be tested does not need to be rotated or moved by the solar illumination simulation device, avoiding The possible damage of the sun tracking equipment or sun tracker in the process of solar illumination simulation is eliminated; then the elevation angle of the simulated sunlight is adjusted so that the elevation angle of the sunlight changes as expected, and the artificially adjustable elevation angle is realized for the simulation of sunlight. the

Description of drawings

Fig. 1 is a schematic structural diagram of a solar illumination simulation device with an artificially adjustable elevation angle according to the present invention. the

Fig. 2 is a working principle diagram of the artificially adjustable solar illumination simulation device of the present invention. the

Detailed ways

The technical scheme of the present invention will be described in detail below in conjunction with the accompanying drawings. the

As shown in Figure 1, the solar illumination simulation device with artificially adjustable elevation angle provided by the present invention includes a solar simulator 7, and the device also includes a reflector 1, an inclination measuring device 2, a reflector rotating mechanism 3, a motion platform 4, Reflector horizontal displacement movement guide rail 5, horizontal displacement measuring device 6, reflector rotation adjustment mechanism 8; reflector 1 is installed on reflector rotation mechanism 3, inclination measuring device 2 is connected with reflector 1; reflector rotation adjustment mechanism 8 is installed At one end of the mirror rotation mechanism 3; the mirror rotation mechanism 3 is installed on the moving table 4; the moving table 4 is installed on the mirror horizontal displacement motion guide rail 5; the horizontal displacement measuring device 6 is connected with the mirror horizontal displacement motion guide rail 5 ; The solar simulator 7 corresponds to the reflector 1 . the

The reflector 1 is used to adjust the inclination angle of the simulated sunlight so that the simulated sunlight is incident on the field of view of the sun tracking device or the photoelectric feedback element of the sun tracker. the

The inclination measuring device 2 can complete functions such as measuring and displaying the inclination between the mirror 1 and the horizontal plane. the

The mirror rotation mechanism 3 is used to adjust the inclination angle between the mirror 1 and the horizontal plane. the

The moving table 4 can relatively slide on the horizontal displacement moving guide rail 5 of the mirror, and is used to change the horizontal displacement of the mirror 1; The adjustment mechanism 8 jointly completes the displacement movement. the

The horizontal displacement measuring device 6 can complete functions such as displacement measurement and displacement display. the

The solar simulator 7 is used to provide simulated sunlight incident on the mirror 1 . the

The solar simulation device and method with artificially adjustable altitude angle proposed by the present invention do not use the method of moving the measured sun tracking device or sun tracker to change the altitude angle of the simulated sunlight, but use the method of changing the displacement and inclination angle of the reflector Methods. the

In conjunction with Fig. 1 and Fig. 2, the solar illumination simulation method with artificially adjustable elevation angle provided by the present invention takes the following steps:

Step 1: Adjust the direction of the outgoing light of the solar simulator 7 so that the outgoing light beam of the solar simulator 7 is parallel to the horizontal plane and irradiates the reflector 1, and measure the value of h, where h is the central line of the outgoing light beam of the solar simulator 7 to the sun tracking device or the sun The vertical distance from the surface of the photoelectric feedback element of the tracker;

Step 2: Calculate the horizontal displacement value of the reflector 1 as x according to the required sun altitude angle α, manually adjust the displacement of the reflector on the horizontal displacement movement guide rail, and change the horizontal displacement of the reflector 1 to x,

$x=\frac{h}{\mathrm{the\; tan}\mathrm{\α}}$ ;

Step 3: Calculate the inclination angle β between the reflector 1 and the horizontal plane according to the required sun altitude angle α, manually adjust the mirror rotation adjustment mechanism 8, and adjust the inclination angle between the reflector 1 and the horizontal plane to β,

$\mathrm{\β}=\frac{\mathrm{\π}}{2}-\frac{\mathrm{\α}}{2}$ ;

Through the adjustment of the above three steps, the simulated sunlight with the required elevation angle α can finally be provided to enter the field of view of the photoelectric feedback element (photocell, photodiode, CCD and other imaging devices) of the sun tracking device to be tested or the sun tracker. the

According to the solar simulation device and method with artificially adjustable elevation angle of the present invention, the simulated sunlight changes are close to the working conditions of the sun tracking device or sun tracker to be tested, and the solar illumination simulation test is intuitive, which is beneficial to the sun tracking device or sun tracker Developers can debug and test various modules of sun tracking equipment or sun trackers, and have a wide range of applications. the

Claims (1)

1. the solar irradiation analogy method that elevation angle is manually adjustable, the method equipment therefor comprises solar simulator (7), it is characterized in that, this device also comprises catoptron (1), dip measuring device (2), mirror rotation mechanism (3), sports platform (4), catoptron horizontal shift motion guide rail (5), horizontal shift measurement mechanism (6), catoptron rotating and regulating mechanism (8); Catoptron (1) is arranged on mirror rotation mechanism (3), and dip measuring device (2) is connected with catoptron (1); Catoptron rotating and regulating mechanism (8) is arranged on one end of mirror rotation mechanism (3); Mirror rotation mechanism (3) is arranged on sports platform (4); Sports platform (4) is arranged on catoptron horizontal shift motion guide rail (5); Horizontal shift measurement mechanism (6) is connected with catoptron horizontal shift motion guide rail (5); Solar simulator (7) is corresponding with catoptron (1); It is characterized in that comprising the following steps:

Step one: the emergent ray direction of adjustment solar simulator (7), making solar simulator (7) outgoing beam be parallel to surface level is irradiated on catoptron (1), measures the vertical range h value of solar simulator (7) outgoing beam center line to sun tracker;

Step 2: sun altitude α as required, the horizontal shift value calculating catoptron (1) is x, the manually displacement of adjustment catoptron on horizontal shift motion guide rail, changes the horizontal shift of catoptron (1) to x,

$x=\frac{h}{\tan \mathrm{\α}};$

Step 3: sun altitude α as required, calculates catoptron (1) and the angle of inclination beta of surface level, manually adjusts catoptron rotating and regulating mechanism (8), adjust the inclination angle of catoptron (1) and surface level to β,

$\mathrm{\β}=\frac{\mathrm{\π}}{2}-\frac{\mathrm{\α}}{2};$

Obtain the simulated solar irradiation of the sun altitude α needed.