A single-axis solar tracking sensor device

Abstract

The invention provides a single-shaft solar tracking and sensing device. The single-shaft solar tracking and sensing device comprises a protection case, a reflection structure, a sensor assembly and a wire connection port. The protection case comprises a box cover fastening an auxiliary installation plate in a box body. The auxiliary installation plate is provided with a light-transmitting opening and coarse sensors, and the light-transmitting opening is formed in one end of the auxiliary installation plate. The reflection structure comprises a first reflection mirror and a second reflection mirror, wherein the first reflection mirror is provided with a first irradiation portion and the second reflection mirror is provided with a second irradiation portion. The first irradiation portion is arranged on the light-transmitting opening, incident light can be refracted to the position on the second reflection mirror, and the second irradiation portion is arranged in an opposite state relative to the first irradiation portion. A sensor module is installed at the position where can be refracted by the second irradiation portion through a PCB and connected with the wire connection port through a circuit. According to the structure or structure combination, the sensing device is realized, and therefore the good effects that designing and processing are simple and convenient, the failure risk can be avoided, the manufacturing cost is lowered and the performance is reliable are achieved.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a single-axis solar tracking sensor device. Background technique [0002] For Concentrated Photovoltaics (CPV), maintaining real-time solar tracking accuracy is one of the keys to be able to generate high-efficiency power generation. [0003] Traditional solar tracking methods generally use photoelectric sensors at different positions to detect the sun’s motion angles in different directions in real time for feedback tracking. The key to power generation, and the sun-tracking sensor is the core unit. The basic requirements for designing such sensors are low cost and high precision. There are many similar designs in the prior art, and the most representative designs are as follows: [0004] For the first, see figure 1 As shown, it is a long barrel type sun tracking sensor structure. Four photocells 101 with the same characteristics are evenly placed in four quadrants, a...

AI Technical Summary

Problems solved by technology

When the sun deviates from a large angle, time-controlled rough positioning is used, and when the deviation is small, the shadow angle is used to locate. The main problem of this method is that the requirements for processing accuracy are high, and the size of the sensor is relatively large.

[0005] For the second, see figure 2 As shown, it is a cross baffle sun tracking sensor structure. The light intensity sensor 201 is placed on the edge of four baffles 202, and the shadow of the cross baffle can be used to locate the tracking accuracy. Since it is an open design, when the sun When the position deviation is large, the light intensity sensor 201 can perform a rough tracking function, and when the sun position deviation is small, the sun position accuracy can be determined by the shadow deviation angle. figure 1 The structure is slightly simpler, but due to the open design, outdoor stray light has a greater impact on the sensor 201, making its actual tracking accuracy not as accurate as the first method

[0008] First, it is not easy to avoid the errors caused by processing and installation. These errors mainly include machining errors, PCB board installation errors, component welding position errors, photoelectric sensor inconsistencies, and sampling processing errors. These errors eventually form cumulative errors and affect tracking accuracy

[0009] The second is that the tracking accuracy is directly proportional to the height of shadow occlusion. If high precision is required, the height of the light-shielding structure must be increased, which makes the size of the sensor often too large and too long, resulting in increased processing accuracy and cost requirements.

[0010] The third is that the common design is dual-axis detection, which is concentrated on one sensor head and cannot be used separately. Once the sensor fails due to some problems, it will affect the entire system, so it often has some risks and low reliability.

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