CN201608661U

CN201608661U - Self-power supply tracking solar probe

Info

Publication number: CN201608661U
Application number: CN2009201629640U
Authority: CN
Inventors: 孙迎光
Original assignee: WUXI HAOSOLAR NEW ENERGY TECHNOLOGY Co Ltd
Current assignee: WUXI HAOSOLAR NEW ENERGY TECHNOLOGY Co Ltd
Priority date: 2009-08-13
Filing date: 2009-08-13
Publication date: 2010-10-13
Anticipated expiration: 2019-08-13

Abstract

The utility model provides a self-power supply tracking solar probe, light-shading columns for constituting the self-power supply tracking solar probe are vertically mounted on a base, the light-shading columns are positioned at the center of the base, the base is divided into four regions by the light-shading columns, four small rectangular slots are formed in the four regions which are near to the center of the intersection line of the light-shading column and the base for forming four light guide holes, four photoresistors are correspondingly arranged in the four small rectangular slots on the base surface of the base, sunlight can penetrate the four small rectangular slots and fall on the four photoresistors, the four photoresistors and resistors for constituting elevation angle and azimuth angle detection circuits are mounted on a circuit board on the back surface of the base, the four photoresistors and the four resistors constitute the elevation angle and azimuth angle detection circuits, two solar cells are arranged at the top part of each light-shading column, and the solar cells are respectively used for supplying power for the elevation angle and azimuth angle detection circuits. The light-shading columns and the circuit board are mounted on the base and form a whole, thereby constituting the self-power supply tracking solar probe. The elevation angle and azimuth angle detection circuits of the self-power supply tracking solar probe use two solar cells for power supply, voltage changes along with the brightness of the sky, when the brightness of the sky is low, the driving voltage is low, thereby reducing the impacts caused by scattered light and improving the tracking precision. The voltage for driving the photosensitive elements is very low on cloudy and rainy days, the voltage at night is zero, and the photosensitive elements do not work, thereby prolonging the service life of the photosensitive elements.

Description

A kind of self-powered is followed the tracks of sunblazer

Technical field

The invention belongs to the Application of Solar Energy field, be specifically related to twin shaft, the tracking sunblazer of single shaft in the tracking control system of motion tracking PV electricity generation system, CPV electricity generation system, solar heat power generation system.

Background technology

At present, automatic tracking solar PV, the CPV electricity generation system generating efficiency that can improve, solar heat power generation system can the reduction cost of electricity-generating.Automatic tracking solar generation system need be from the motion tracking sun, controls method if having time and light source is surveyed 2 kinds of control methods from motion tracking sun technology.Time control act is subjected to geographical position, power station and solar motion effect of nonlinear, and tracking accuracy is not high, and debugging is complicated, generally is used for the single shaft automatic tracking solar generation system.Light source is surveyed control method not dependent station geographical position and solar motion effect of nonlinear, and debugging is simple, and it is demanding from motion tracking CPV electricity generation system generally to be used for tracking accuracy.The critical component that light source is surveyed the control method is to follow the tracks of sunblazer.The performance of following the tracks of sunblazer directly influences tracking accuracy and reliability.

At present popular tracking sunblazer generally is to be distributed in 4 quadrants with sun incident light vertical plane by 4 light-sensitive elements, the initial point of 4 quadrants is provided with the shading column vertical with the plane, 4 light-sensitive elements are subjected to the skew of blocking the perception sun of shading column shade, and produce shifted signal.The shortcoming of this tracking sunblazer is that the light-sensitive element of 4 quadrants needs precision voltage source to drive, and power supply is added on 4 light-sensitive elements all the time, and the brightness of supply voltage and sky is irrelevant, is subject to the influence of scattered light, and tracking accuracy reduces when scattered light is strong.In addition, in life-span of loading effect light-sensitive element of power supply at overcast and rainy, night, and wasted light-sensitive element and driven merit.

Summary of the invention

In order to reduce the influence of scattered light, overcast and rainyly reduce to drive light-sensitive element supply voltage, night driving power and disappear automatically to improve the life-span of light-sensitive element and reduce light-sensitive element and drive merit.The invention provides a kind of self-powered and follow the tracks of sunblazer, this self-powered is followed the tracks of the sunblazer employing and is installed in the solar cell driving light-sensitive element that 4 light-sensitive elements are subjected to the shading column top, the voltage that drives light-sensitive element changes with sky brightness, driving voltage was low when sky brightness was low, this can reduce the influence of scattered light, improves tracking accuracy.The voltage of overcast and rainy driving light-sensitive element is very little, and night, voltage was zero, and light-sensitive element is not worked, and this has just prolonged the life-span of light-sensitive element.This self-powered is followed the tracks of sunblazer and is had the tracking accuracy height, and detection angle is big, simple in structure, volume is little, and cost is low, the characteristics of reliable operation.

Self-powered of the present invention is followed the tracks of sunblazer and is adopted 4 photo resistance to be distributed in 4 quadrants with sun incident light vertical plane, and the initial point in 4 quadrants is provided with the square shading column of a certain altitude, and square shading column is perpendicular to the plane.The high tracking accuracy height of shading column, but be subjected to stray light effects big.4 limits of shading column bottom are distributed in 4 quadrants, are provided with the groove that 4 rectangles see through the plane along the plane in the outside on 4 limits of shading column bottom, are provided with 4 photo resistance at corresponding 4 the rectangular grooves of plane opposite side.Shading column is that the center is divided into 4 photometry regions with 4 quadrant round dots of sun incident light vertical plane, and 4 photo resistance are distributed in 4 photometry regions.4 photometry regions and north and south, east-west direction are corresponding, and the component that move in sun north and south, thing is surveyed in 4 photo resistance respectively, and the north and south mobile component is corresponding with the elevation angle of the sun, and the thing mobile component is corresponding with the azimuth of the sun.When the orientation of its axis solar time of shading column, 4 limits of shading column bottom do not have shade, and 4 photo resistance are not blocked by shading column, and direct irradiation of sunlight is in 4 photo resistance, the elevation angle that constitutes in 4 photo resistance and azimuth testing circuit are output as zero, can make tracking system motionless.When the axis of shading column does not point to the solar time, 4 photo resistance have 1-2 to be blocked by the shade of shading column, the elevation angle that constitutes in 4 photo resistance and the output of azimuth testing circuit are non-vanishing, the elevation angle and the azimuth angle deviation signal of output plus or minus, deviation signal can make tracking system move accordingly, stops after making the orientation of its axis sun of shading column.Two solar cells are housed at the top of shading column, the area of two solar cells is less than the area at shading column top, two solar cells are given the photo resistance power supply of north and south and thing respectively, voltage changes with sky brightness, driving voltage was low when sky brightness was low, this can reduce the influence of scattered light, improves tracking accuracy.The voltage of overcast and rainy driving light-sensitive element is very little, and night, voltage was zero, and light-sensitive element is not worked, and this has just prolonged the life-span of light-sensitive element.

The shading column that constitutes self-powered tracking sunblazer of the present invention is vertically mounted on the base, shading column is positioned at the center of base, base is divided into 4 zones by shading column, have 4 little rectangular grooves in 4 zones near the intersection center of shading column and base and form 4 light-conductive holes, corresponding 4 photo resistance at 4 little rectangular grooves place, the back side of base, sunlight can see through 4 little rectangular grooves and shine in 4 photo resistance, 4 photo resistance and the resistance that constitutes the elevation angle and azimuth testing circuit are installed on the circuit board at the back side of base, 4 photo resistance and 4 resistance constitute the elevation angle and azimuth testing circuit, two solar cells are equipped with at the top of shading column, and solar cell is given the power supply of the elevation angle and azimuth testing circuit respectively.Shading column, circuit board, be installed in and form one on the base, constitute self-powered of the present invention and follow the tracks of sunblazer.

Description of drawings

The present invention is further described below in conjunction with accompanying drawing.

Fig. 1 is the structure chart that self-powered of the present invention is followed the tracks of sunblazer.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the circuit board figure that 4 photo resistance is installed and constitutes the resistance of the elevation angle and azimuth testing circuit.

Fig. 4 constitutes the elevation angle and azimuth testing circuit schematic diagram.

In the drawings: 1. are shading columns, 2. be that shading column is installed, the base of circuit board, 3. be the circuit board that photo resistance and testing circuit are installed, 4. be that circuit board is fixed on fixed leg on the base, 5. be the circuit board fixing hole, F1. be to detect the light-conductive hole of west to photo resistance, F2. be to detect the light-conductive hole of east to photo resistance, F3. be to detect the light-conductive hole of the north to photo resistance, F4. be to detect the light-conductive hole of south to photo resistance, GM1. be to detect the west to photo resistance, GM2. be to detect east to photo resistance, GM3. be to detect the north to photo resistance, GM4. be to detect south to photo resistance, R1. be the resistance that connects GM1, R2. be the resistance that connects GM2, R3. be the resistance that connects GM3, R4. be the resistance that connects GM4, PV1. be testing circuit GM1, GM2, R1, the working power solar cell piece of R2, PV2. be testing circuit GM3, GM4, R3, the working power solar cell piece of R4, Δ V1 detects the output signal of following the tracks of the solar azimuth angle error, and Δ V2 detects the output signal of following the tracks of sun elevation angle error.

Embodiment

Realize in the structure chart of self-powered tracking sunblazer of the present invention at Fig. 1, shading column 1 is vertically mounted on the base 2, the axis of shading column 1 is positioned at the center of base 2, base 2 is divided into 4 zones by shading column 1, have 4 in 4 zones near shading column 1 bottom margin center and detect the west, east, north, south 4 direction photo resistance GM1, GM2, GM3, the light-conductive hole aperture F1 of GM4, F2, F3, F4, at 4 the aperture F1 in the back side of base 2, F2, F3, corresponding 4 the photo resistance GM1 in F4 place, GM2, GM3, GM4,4 photo resistance and constitute the resistance R 1 of the elevation angle and azimuth testing circuit, R2, R3, R4 is installed on the circuit board 3 at the back side of base 2, and circuit board 3 is fixed on the fixed leg 4 of base 2 through fixing hole 5.4 photo resistance and 4 resistance constitute azimuth and elevation angle testing circuit.Two solar battery P V1 and PV2 are fixed on the top of shading column 1.Shading column 1, circuit board 3 are installed on the base 2 and form one, constitute self-powered of the present invention and follow the tracks of sunblazer.

Follow the tracks of in the vertical view of structure chart of sunblazer at Fig. 2 self-powered of the present invention, shading column 1 has further clearly been described, base 2, light-conductive hole aperture F1, F2, F3, F4, two solar battery P V1 and PV2 follow the tracks of the arrangement architecture (facing to the face of the sun) of sunblazer at self-powered of the present invention.

Install among the circuit board figure of 4 photo resistance and the resistance that constitutes the elevation angle and azimuth testing circuit at Fig. 3, further described resistance R 1, R2, R3, the arrangement position of R4 on circuit board 3 of photo resistance GM1, GM2, GM3, GM4 and the formation elevation angle and azimuth testing circuit.

Constitute in the elevation angle and the azimuth testing circuit schematic diagram at Fig. 4, photo resistance GM1, GM2 and resistance R 1, R2 constitute the azimuth testing circuit, solar battery P V1 constitutes azimuth testing circuit power supply for GM1, GM2, R1, R2, Δ V1 detects the output signal of following the tracks of the solar azimuth angle error, azimuth zero deflection signal when Δ V1 is zero, when Δ V1 is the overgauge signal for the timing azimuth, when Δ V1 is that the azimuth is the minus deviation signal when bearing.Photo resistance GM3, GM4 and resistance R 3, R4 constitute elevation angle testing circuit, solar battery P V2 constitutes elevation angle angle detection circuit power supply for GM3, GM4, R3, R4, Δ V2 detects the output signal of following the tracks of sun elevation angle error, elevation angle zero deflection signal when Δ V2 is zero, when Δ V2 is the overgauge signal for the timing elevation angle, when Δ V2 is that the elevation angle is the minus deviation signal when bearing.

Error output signal Δ V1 and Δ V2 that the present invention follows the tracks of the detection of sunblazer follow the tracks of the sun through the drive motors of relevant control circuit (control circuit does not belong to description of the invention) control elevation angle follow-up machinery decelerator and the drive motors of azimuth follow-up machinery decelerator.Elevation angle follow-up machinery decelerator and drive motors, azimuth follow-up machinery decelerator and drive motors drive the plate solar or the concentrating to generate power component tracks sun, can realize double-shaft auto-tracking solar power generation or concentrating generating system.

Claims

1. a self-powered is followed the tracks of sunblazer, can be used for double-shaft auto-tracking solar energy PV electricity generation system, the tracking sunblazer of the automatic following control system in CPV electricity generation system and the solar heat power generation system, it is characterized in that: a shading column is vertically mounted on the base, shading column is positioned at the center of base, base is divided into 4 zones by shading column, have 4 little rectangular grooves in 4 zones near the intersection center of shading column and base and form 4 light-conductive holes, corresponding 4 photo resistance at 4 little rectangular grooves place, the back side of base, sunlight can see through 4 little rectangular grooves and shine in 4 photo resistance, 4 photo resistance and the resistance that constitutes the elevation angle and azimuth testing circuit are installed on the circuit board at the back side of base, 4 photo resistance and 4 resistance constitute the elevation angle and azimuth testing circuit, two solar cells are equipped with at the top of shading column, solar cell is given the power supply of the elevation angle and azimuth testing circuit respectively, shading column, circuit board, be installed in and form one on the base, constitute self-powered of the present invention and follow the tracks of sunblazer, this self-powered is followed the tracks of the elevation angle and the azimuth testing circuit of sunblazer and is powered by 2 solar cells, voltage changes with sky brightness, and driving voltage was low when sky brightness was low.

2. a kind of self-powered according to claim 1 is followed the tracks of sunblazer, it is characterized in that: shading column 1 is vertically mounted on the base 2, the axis of shading column 1 is positioned at the center of base 2, base 2 is divided into 4 zones by shading column 1, have 4 in 4 zones near shading column 1 bottom margin center and detect the west, east, north, south 4 direction photo resistance (GM1), (GM2), (GM3), (GM) 4 light-conductive hole aperture (F1), (F2), (F3), (F4), 4 apertures in the back side (F1) at base 2, (F2), (F3), (F4) locate corresponding 4 photo resistance (GM1), (GM2), (GM3), (GM4), 4 photo resistance and constitute the resistance (R1) of azimuth and elevation angle testing circuit, (R2), (R3), (R4) be installed on the circuit board 3 at the back side of base 2, circuit board 3 is fixed on the fixed leg 4 of base 2 through fixing hole 5.4 photo resistance and 4 resistance constitute the elevation angle and azimuth testing circuit, two solar cells (PV1) and (PV2) being fixed on the top of shading column 1, shading column 1, circuit board 3 are installed on the base 2 and form one, constitute self-powered of the present invention and follow the tracks of sunblazer.