KR100999504B1

KR100999504B1 - Method for driving solar-cell panel

Info

Publication number: KR100999504B1
Application number: KR20080137209A
Authority: KR
Inventors: 박왕식
Original assignee: 주식회사 더고
Priority date: 2008-12-30
Filing date: 2008-12-30
Publication date: 2010-12-09
Also published as: KR20100078840A

Abstract

The driving method of the solar cell plate according to the present invention includes installing an infrared imaging module that rotates in parallel with the solar cell plate. In addition, when the pixel group generating the light receiving position signal is changed in the infrared imaging module, the solar cell plate is rotated by a set azimuth angle according to the changing direction of the pixel group.

Solar panel, driven

Description

Method for driving solar panel {Method for driving solar-cell panel}

The present invention relates to a method for driving a solar cell plate, and more particularly, to a driving method for rotating a solar cell plate so that the solar cell plate is inclined toward the sun.

In order to maximize the light receiving efficiency of the solar cell plate, the sun's optical axis should be incident with the normal to the solar cell plate.

However, the sun's azimuth with respect to the solar panel changes continuously throughout the day or throughout the year.

Therefore, in order to maximize the light receiving efficiency of the solar panel, it is necessary to rotate the solar panel accurately and precisely so that the solar panel is inclined toward the sun according to the azimuth angle of the solar panel.

An object of the present invention is to provide a method of driving a solar cell plate that can maximize the light receiving efficiency of the solar cell plate.

The driving method of the solar cell plate of the present invention includes the step of installing an infrared imaging module that rotates in parallel with the solar cell plate. In addition, when the pixel group generating the light receiving position signal is changed in the infrared imaging module, the solar cell plate is rotated by a predetermined azimuth angle according to the changing direction of the pixel group.

According to the driving method of the solar cell plate of the present invention, by using the infrared imaging module that rotates in parallel with the solar cell plate, the solar cell plate by the set azimuth angle according to the change direction of the pixel group for generating a light receiving position signal Is rotated. Accordingly, the following effects can be obtained.

First, by blocking visible light from the sun and using only infrared light, it is possible to increase the density of the sun light so that the position of the sun's optical axis can be accurately detected even in a narrow infrared CCD-pixel panel.

Second, by using an imaging module such as an infrared CCD-pixel panel or the like, it is possible to accurately detect the position of the pixel group that generates the light receiving position signal.

In conclusion, the solar cell plate can be rotated accurately and precisely so that the solar cell plate is inclined toward the sun according to the azimuth angle of the solar cell plate. Therefore, the light receiving efficiency of the solar cell plate can be maximized.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows that the solar cell plate 11 is driven by the method of one embodiment of the present invention. In Fig. 1, reference numeral 12 denotes a support.

Referring to FIG. 1, by the driving device 13 using the driving method according to the present invention, the solar cell plate 11 pans left and right about the vertical axis V, and the horizontal axis Tilt is rotated up and down about (H).

The drive device 13 includes an infrared imaging module. The infrared imaging module is installed next to the solar cell plate 11 so as to rotate side by side with the solar cell plate 11.

In addition, when the pixel group for generating the light receiving position signal is changed in the infrared imaging module, the driving device 13 rotates the solar cell plate 11 by the set azimuth angle according to the changing direction of the pixel group.

Accordingly, the following effects can be obtained.

Second, by using an imaging module such as an infrared CCD-pixel panel, it is possible to accurately detect the position of the pixel group generating the light receiving position signal.

In conclusion, the solar cell plate 11 can be rotated accurately and precisely so that the solar cell plate 11 is inclined toward the sun according to the azimuth angle of the sun with respect to the solar cell plate 11. Therefore, the light receiving efficiency of the solar cell plate 11 can be maximized.

Such details will be described in detail with reference to FIGS. 2 to 9.

2 shows the configuration of a drive device (13 in FIG. 1) in which the drive method of one embodiment of the present invention is used. In Fig. 2, reference numeral 2 denotes the sun and θ denotes the azimuth angle of the solar 2 with respect to the solar panel, respectively. FIG. 3 shows that the infrared imaging module 201 is installed to rotate side by side with the solar cell plate 11 in the driving device 13 of FIG. 2. In FIG. 3, the same reference numerals as used in FIG. 2 indicate objects of the same function.

2 and 3, the driving device 13 using the driving method of the embodiment of the present invention includes an infrared imaging module 201, a CDS-ADC 134, a digital signal processor (DSP) 135, and a microcontroller. 136, a motor driver 137, a panning motor M _P , and a tilting motor M _T.

In the infrared imaging module 201, an infrared pass filter 132 is provided under the wide-angle lens 131, and an infrared CCD-pixel panel 133 is provided under the infrared pass filter 132.

The wide-angle lens 131 focuses incident sunlight.

The infrared ray passing filter 132 blocks visible rays of sunlight incident through the wide-angle lens 131 and passes only infrared rays.

In the infrared charge coupled device (CCD) -pixel panel 133 in which a plurality of pixel groups are set, a light receiving position signal is generated from a pixel group that receives infrared rays from the infrared pass filter 132. Here, an infrared Complementary Metal-Oxide-Semiconductor (CMOS) -pixel panel may be used instead of the infrared CCD-pixel panel 133.

The infrared imaging module 201 having the configuration as described above is installed next to the solar cell plate 11 so as to rotate side by side with the solar cell plate 11 (see FIG. 3).

The CDS-ADC (Correlation Double Sampler and Analog-to-Digital Converter, 134) processes the light receiving position signal from the infrared CCD (Charge Coupled Device) -pixel panel 133, removes the high frequency noise, and adjusts the amplitude. After adjustment, it is converted into a digital signal.

A digital signal processor (DSP: 135) monitors the light receiving position signal from the CDS-ADC 134 and performs an infrared CCD (Charge Coupled Device) pixel panel 133 in the infrared imaging module 201. It is determined whether the pixel group generating the light receiving position signal is changed.

When the pixel group generating the light receiving position signal is changed in the infrared CCD (pixel coupled device) -pixel panel 133 in the infrared imaging module 201, the digital signal processor (DSP) 135 is set according to the changing direction of the pixel group. The rotation control signal is generated such that the solar cell plate 11 is rotated by the azimuth angle.

The microcontroller 136 as the auxiliary controller controls the operation of the motor driver 137 in accordance with the rotation control signal from the digital signal processor DSP 135 as the main controller.

Accordingly, the motor driver 137 drives the panning motor M _P and the tilting motor M _T.

FIG. 4 shows a structure of an infrared CD-CCD-pixel panel 133 in the driving device of FIG. 2.

2 and 4, the infrared CDC-pixel panel 133 includes 640 pixels in the horizontal direction and 480 pixels in the vertical direction. In the present embodiment, the infrared rays from the infrared pass filter 132 occupy four pixels in the horizontal direction and four pixels in the vertical direction in the infrared CDD-pixel panel 133. Therefore, in the digital signal processor DSP 135, four pixels in the horizontal direction and four pixels in the vertical direction are set as one pixel group.

Therefore, 160 pixel groups are set on the horizontal axis. For example, 160 pixel groups of G _1-1 to G _1-160 are set in the first row. In addition, 120 pixel groups are set on the vertical axis. For example, 120 pixel groups of G _1-1 to G _120-1 are set in the first column.

In FIG. 4, reference numeral L _DSX denotes the movement-sensing range of the sun for one day, and L _YSX denotes the movement-sensing range of the sun for one year. That is, as the sun moves during the day, the pixel group generating the light receiving position signal is changed in the horizontal direction. Further, as the sun moves for one year, the pixel group generating the light receiving position signal is changed in the vertical direction.

Thus, the unit azimuth for panning can be set using the sun's moving-azimuth range and moving-sensing range L _DSX during the day. Similarly, the unit azimuth for tilting can be set using one year's travel-azimuth range and travel-detection range L _YSX for one year.

FIG. 5 shows that the pixel group generating the light receiving position signal in the infrared CDD-pixel panel 133 of FIG. 4 is periodically changed over time.

4 and 5, when no panning is performed, when the light receiving position signal P _60-1 is generated in the pixel group of the 60th row to the first column for the first day of the day, It is designed to generate the light receiving position signals P _60-160 in the pixel group of 60 rows-160 columns.

Similarly, when no tilting is performed, when the light receiving position signal P _1-80 is generated in the pixel group of the first row to the 80th column for the first time in a year, the first end date of the year It is designed to generate the light receiving position signals P _120-80 in the pixel group of 120 rows-80 columns.

However, according to the driving method according to the present invention, the solar cell plate 11 pans left and right about the vertical axis V, and tilts up and down about the horizontal axis H. ), The light reception position signal is mainly generated in a specific pixel group.

FIG. 6 shows a control algorithm of the digital signal processor (DSP) 135 as the main controller of FIG. 2. FIG. 7 shows that the changing direction of the pixel group is the horizontal direction in step S2 of FIG. 6. FIG. 8 shows that the changing direction of the pixel group is a vertical direction in step S2 of FIG. 6. FIG. 9 shows that the changing direction of the pixel group is a diagonal direction in step S2 of FIG. 6.

6 to 9, a control algorithm of the digital signal processor (DSP) 135 as the main controller of FIG. 2 will be described.

First, the digital signal processor (DSP) 135 monitors whether the pixel group for generating the light receiving position signal is changed by infrared rays (step S1).

If it is determined in step S1 that the pixel group generating the light receiving position signal is changed by infrared rays, the digital signal processor DSP 135 determines the direction of change of the pixel group (step S2).

If the direction of change of the pixel group in the step S2 is the horizontal direction, the digital signal processor (DSP) 135 inputs the rotation control signal to the microcontroller (136 in FIG. 2), and the solar panel (201 in FIG. 3) is set. The panning motor M _P is driven to pan by the azimuth angle (step S3, see FIG. 7).

If the direction of change of the pixel group in the step S2 is the vertical direction, the digital signal processor (DSP) 135 inputs a rotation control signal to the microcontroller 136, so that the solar panel 201 is tilted by a set azimuth angle. The tilting motor M _T is driven so as to (step S4, see FIG. 8).

If the direction of change of the pixel group in the step S2 is a diagonal direction, the digital signal processor (DSP) 135 inputs a rotation control signal to the microcontroller 136, so that the solar panel 201 pans by the set azimuth angle. And the panning motor M _P and the tilting motor M _T to be tilted (step S5, see FIG. 9).

As described above, according to the driving method of the solar cell plate according to the present invention, by using an infrared imaging module that rotates in parallel with the solar cell plate, a set azimuth angle according to the changing direction of the pixel group generating the light receiving position signal The solar cell plate is rotated. Accordingly, the following effects can be obtained.

In conclusion, the solar panel may be rotated accurately and precisely so that the solar panel is inclined toward the sun according to the azimuth angle of the solar panel. Therefore, the light receiving efficiency of the solar cell plate can be maximized.

The present invention is not limited to the above embodiments, but may be modified and improved by those skilled in the art within the spirit and scope of the invention as defined in the claims.

The present invention can be used in the field of tracking the position of a periodically changing light source.

1 is a view showing that a solar cell plate is driven by the method of an embodiment of the present invention.

2 is a diagram illustrating a configuration of a driving apparatus in which a driving method of an embodiment of the present invention is used.

3 is a view showing that the infrared imaging module is installed to rotate side by side with the solar cell plate in the driving device of FIG.

FIG. 4 is a diagram illustrating a structure of an infrared CD-pixel panel in the driving device of FIG. 2.

FIG. 5 is a diagram illustrating that a group of pixels generating a light receiving position signal is periodically changed over time in the infrared CDC-pixel panel of FIG. 4.

6 is a flowchart showing a control algorithm of the digital signal processor as the main controller of FIG.

FIG. 7 is a diagram illustrating that the changing direction of the pixel group is a horizontal direction in step S2 of FIG. 6.

FIG. 8 is a diagram illustrating that the changing direction of the pixel group is a vertical direction in step S2 of FIG. 6.

FIG. 9 is a diagram illustrating that the changing direction of the pixel group is a diagonal direction in step S2 of FIG. 6.

11 solar panels, 12 supports,

13 ... drive, 2 ... sun,

201 ... infrared imaging module, 131 ... wide angle lens,

132 ... infrared pass filter, 133 ... infrared CCD-pixel panel,

134 ... CDS-ADC, 135 ... Digital Signal Processor,

136 microcontroller, 137 motor drive,

M _P ... panning motor, M _T ... tilting motor,

L _DSX ... travel-detection range of the sun,

L _YSX ... the sun's travel-detection range for one year.

Claims

Installing an infrared imaging module that rotates in parallel with the solar cell plate; And

And rotating the solar cell plate by a predetermined azimuth angle according to the changing direction of the pixel group when the pixel group generating the light receiving position signal is changed in the infrared imaging module.

The infrared imaging module is a method of driving a solar cell plate including an infrared CDD (pixel) panel.