JP2001111090A - Optical position sensor, optical tracking system and optical tracking type power generation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical position sensor, an optical tracking system and an optical tracking type power generation system utilizing a solar battery that can obtain positional information, such as height and direction of a light source through adequate allocation depending on the regional environment to generate electrical power with the solar battery, place and a kind of light source. SOLUTION: There is provided an optical position sensor 10, an optical tracking system and an optical tracking type power generation system for detecting positional information of a light source from difference in an amount of power generation of each solar battery cell 1, by laying a plurality of solar battery cells 1 to the significant layout positions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical position sensor using a solar cell, an optical tracking system, and an optical tracking type photovoltaic power generation system.

[0002]

2. Description of the Related Art Hitherto, since the orbit of the sun is known astronomically throughout the year, a system in which this orbit is programmed in a computer to control the direction of a solar cell and efficiently generate power can be considered.

[0003]

However, even if the orbit of the sun is known, the efficiency according to the program may not always be obtained depending on the local environment, the place, the light source, etc. in which the solar cell is to generate power. However, there are situations in which programming is difficult, and in the case of a relatively large-sized solar cell, there is a problem that the structure of tracking the solar cell toward the sun is large and complicated.

[0004]

Therefore, the present invention firstly lays a plurality of photovoltaic cells each having an arrangement position, and detects the position information of the light source from the difference in the amount of power generated by each photovoltaic cell. A position sensor is provided. According to the present invention, an optical position sensor is installed at an arbitrary location,
Position information such as the irradiation angle and direction of the light source that irradiates the place can be detected from the difference in the amount of power generation of the plurality of solar cells, which means the arrangement position.

Further, the present invention provides an optical position sensor according to the first aspect, wherein the solar battery cells are laid in a plane.
ADVANTAGE OF THE INVENTION According to this invention, a planar light position sensor can be obtained by laying a solar cell in planar form, and manufacture, installation, etc. are easy. The present invention also provides an optical position sensor according to the first aspect, wherein the solar battery cells are laid in a concave or convex curved shape. According to the present invention, it is possible to use an optical position sensor that is curved in a concave or convex curved surface in accordance with the properties and trajectory of the light source, or the terrain or terrain model to be laid.

The present invention also provides an optical position sensor according to claim 3, wherein the solar cells are laid in a spherical shape.
According to the present invention, the spherical optical position sensor
It is possible to easily obtain positional information of a light source that emits directional light. The present invention also provides an optical position sensor according to any one of claims 2 to 4, wherein the solar cells are laid in a lattice pattern. According to the present invention, it is suitable when light travels widely along the plane of the light position sensor.

[0007] The present invention also provides an optical position sensor according to any one of claims 2 to 4, wherein the solar cells are laid radially. According to the present invention, it is suitable for position detection of a light source when the direction of light or shadow changes radially around one point. The present invention also provides an optical position sensor according to any one of claims 1 to 6, wherein the position information of the light source is detected by a shadow of an accessory. ADVANTAGE OF THE INVENTION According to this invention, like a sundial, the positional information on a light source can be detected by the shadow of an accessory.

Further, the present invention provides a light tracking system characterized in that a light source is tracked based on position information of the light source by the light position sensor according to any one of claims 1 to 7. According to the present invention, it is possible to construct a light tracking system that tracks a light source at an arbitrary location based on the position information of the light position sensor. Further, according to the present invention, in the light tracking system according to claim 8, light is irradiated to a solar cell at a position where light does not directly enter by controlling the inclination of the light reflecting plate. Is provided. ADVANTAGE OF THE INVENTION According to this invention, based on the positional information of an optical position sensor, it can control the inclination of a light reflection plate, and irradiate reflected light to the solar cell in the position where light does not directly enter, and can generate electricity efficiently. .

According to the present invention, there is provided an optical tracking type power generation system according to claim 9, wherein the solar cell is a solar cell of an optical position sensor at a position where light does not directly enter. A power generation system is provided. According to the present invention, at some point, when the light from the light source irradiates a part of the solar cells of the optical position sensor and does not irradiate the other part of the solar cells, the irradiated part of the solar cells By controlling the inclination of the light reflector by the position information of the light source by irradiating the reflected light to the solar cell in the position where the light does not directly enter, the solar cell without the light of the optical position sensor generates electricity more efficiently be able to.

[0010] The present invention also provides a light-tracking power generation system according to the ninth or tenth aspect, wherein the light is sunlight. According to the present invention, the position of the sun is detected and tracked by the light position sensor, the inclination of the light reflection plate is controlled to irradiate the solar cell at a position where the sunlight does not directly enter, and the light is efficiently emitted. It can generate electricity.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the illustrated embodiments. In FIG. 1, 10
Is a planar light position sensor in which a large number of solar cells 1 are laid in a lattice shape with the arrangement positions numbered and numbered from 1 to 90. The power generation amount of each of the solar cells 1 is connected to a position analysis circuit of a personal computer via an output terminal, and the position information of the light source 20 can be immediately detected from the difference in the power generation amount. It is.

In the case of the embodiment shown in FIG.
A column 11 having a constant height and a constant width is vertically provided as an accessory in the center of the column, and light is blocked by a shadow 12 of the column. In the figure, 46, 56, 66, 67, 77, etc. It is configured such that the direction and height of the light source 20 such as the sun can be detected from the decrease rate of the power generation amount of the numbered solar cell 1. 1 is suitable for use in detecting the position of a light source that moves over a wide area on a plane without using a support 11. In this case, the positions of a plurality of light sources can be detected.

In FIG. 1, an optical position sensor 1 in which a large number of solar cells 1 are laid radially around a column 1 is shown.
It is also possible to use 0, and when the movement range is limited like sunlight, it is also possible to arrange the solar cells 1 in a fan shape according to the degree of the shadow of the column. . Further, an optical position sensor 10 in which the solar cell 1 is laid in a concave or convex curved surface in accordance with the terrain or a terrain model or the like.
, It is also possible to detect a sunshine state, a shadow state, an uneven state, a stretched state, and the like.

The optical position sensor 10 shown in FIG. 2 has a spherical shape, and a large number of solar cells 1 are laid radially or concentrically around the top on the outer surface thereof. It is suitable for detecting the direction, height (elevation angle), distance, etc. of the light source 20 that irradiates a light beam or the like having a characteristic. That is, the same applies to the case of a planar shape, but if the shape is spherical, the direction of the light source 20 and the height of the light source 20 are determined from the distribution of the amount of power generation of the solar cells 1 around the solar cell 1 that generates the most power. The angle (elevation angle) and the distance can be detected. In addition, as the optical position sensor 10 having a spherical shape, a sensor in which the solar battery cells 1 are arranged in a bowl shape or a mortar shape, instead of the dome shape in FIG. 2, can be used.

In the embodiment of FIG. 1 or FIG. 2, by providing the solar cell 1 of the optical position sensor 10 on both sides, it is possible to obtain the light position information using either the front or back surface, By using the front and back surfaces, it is possible to obtain the light position information on both the front and back surfaces. Further, the light position sensor 10 can be arranged in a spherical, conical, polygonal cubic, or other form laid on the surface of various objects, and position information of a light source can be obtained by individual solar cells.

Next, the light tracking type power generation system of the present invention shown in FIG. 3 tracks the light source 20 and controls the position of the light reflecting plate 30 based on the position information of the light source 20 by the light position sensor 10 so that the light is emitted. Solar cell 40 at a position where direct incidence does not occur
Is irradiated with light. According to the configuration in FIG. 3, a change in the position of the sun due to the season or time is accurately detected by the optical position sensor 10, and the reflected light is optimally applied to the solar cell 40 provided at a position where there is no direct sunlight at that time. In addition, it is possible to control the angle position of the reflector and to generate power efficiently. In the case of the embodiment shown in FIG. 3, the reflection plate 30 is a light-collecting reflection plate having a light-condensing mechanism 31.

In the above-described light-tracking type power generation system, the solar cell 40 is constituted by the solar cell 1 of the light position sensor 10 at a position where light does not directly enter, so that the light from the light position sensor 10 is irradiated. When the position information of the light source 20 is detected by some of the photovoltaic cells 1, the light position sensor function is stopped, the light tracking system is activated, and the inclination of the light reflector is controlled to prevent the light from being directly incident on the sun. The solar cell 1 irradiates light to the battery cell 1 and irradiates the light of the light position sensor 10 directly and indirectly. When the amount of generated power decreases, the position information of the light source 20 is again obtained by the light position sensor 10. To irradiate light to the solar cell 1 at a position where light does not directly enter by controlling the inclination of the light reflecting plate, and directly and indirectly irradiate the light of the optical position sensor 10. Performs power generation by the battery cell 1 can be utilized efficiently its power to the optical tracking system and the like.

[0018]

As described above, according to the optical position sensor of the present invention, a plurality of solar cells having the meaning of the arrangement position are laid, and the position information of the light source is obtained from the difference in the amount of power generation of each solar cell. By having a configuration to detect, a light position sensor is installed at an arbitrary place, and position information such as an irradiation angle and a direction of a light source irradiating the place is generated by a plurality of photovoltaic cells generating the meaning of the arrangement position. There is an effect that can be detected from the difference in the amount.

Further, according to the present invention, in the optical position sensor according to the first aspect, the solar cell is laid in a plane so that positional information of light or shadow moving above the plane can be easily obtained. Thus, there is an effect that a flat optical position sensor can be obtained, and manufacture, installation, and the like are easy. Further, the present invention provides the optical position sensor according to claim 1, wherein the solar battery cell has a configuration in which the solar cell is laid in a concave or convex curved surface, so that the properties and orbits of the light source, or the terrain or terrain model to be laid. Accordingly, there is an effect that an optical position sensor curved in a concave or convex curved surface shape can be obtained.

Further, the present invention provides the optical position sensor according to the third aspect, wherein the photovoltaic cells are laid in a spherical shape so that the dome-shaped or bowl-shaped optical position sensor has a spherical shape. There is an effect that positional information of a light source that emits light having directivity can be easily obtained. Further, the present invention provides the optical position sensor according to any one of claims 2 to 4, wherein the solar cell is laid in a lattice shape, so that light moves widely along the surface of the optical position sensor. In this case, there is an effect that position information can be easily obtained.

According to the present invention, in the optical position sensor according to any one of claims 2 to 4, the direction of light or shadow is radial around one point by having a configuration in which solar cells are laid radially. In this case, there is an effect that an optical position sensor suitable for detecting the position of the light source in the case where the position changes to a different value is obtained. According to the present invention, in the optical position sensor according to any one of claims 1 to 6, a position of the light source is detected by a shadow of the accessory, so that the light source sensor can be used as a sundial.
There is an effect that positional information of the light source can be detected by the shadow of the accessory.

Further, the present invention has a configuration in which the light source is tracked based on the position information of the light source by the light position sensor according to any one of claims 1 to 7, so that an arbitrary position can be determined based on the position information of the light position sensor. There is an effect that a light tracking system that tracks a light source at a place can be constructed. In addition, the present invention provides the light tracking system according to claim 8, wherein the light reflecting plate has a configuration in which the light reflecting plate is tilted to irradiate light to a solar cell at a position where light does not directly enter, so that the light position sensor is Based on the position information, the tilt of the light reflector is controlled to irradiate the reflected light to the solar cell at a position where light does not directly enter, so that power can be efficiently generated.

According to the present invention, there is provided a light-tracking type power generation system according to the ninth aspect, wherein the solar cell is a solar cell of an optical position sensor at a position where light does not directly enter. In the case where the light from the light source irradiates a part of the solar cells of the light position sensor and does not irradiate the other part of the solar cells, the position information of the light source by the irradiated part of the solar cells is used as the light. The effect of controlling the tilt of the reflector and irradiating reflected light to the solar cell at a position where light does not directly enter, and efficiently generating electricity by the solar cell that does not directly hit the light from the light source of the light position sensor There is. Further, the present invention relates to claim 9 or 1
In the light-tracking type power generation system described in No. 0, the light is sunlight, and the position of the sun is detected and tracked by the light position sensor, and the position where sunlight does not directly enter is controlled by controlling the inclination of the light reflector. Irradiates reflected light to the solar cell in
There is an effect that power can be efficiently generated.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a use mode of a main part of one embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a usage state of a main part of another embodiment of the present invention.

FIG. 3 is a schematic explanatory view showing a mode of use of a main part of one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 solar cell 10 optical position sensor 20 light source such as sun 30 reflector 40 solar cell

Claims (11)

[Claims] 1. An optical position sensor that lays a plurality of solar cells indicating the arrangement position and detects positional information of a light source from a difference in the amount of power generated by each solar cell. 2. The optical position sensor according to claim 1, wherein the solar cells are laid flat. 3. The optical position sensor according to claim 1, wherein the solar cells are laid in a concave or convex curved surface. 4. The optical position sensor according to claim 3, wherein the solar cells are laid in a spherical shape. 5. The optical position sensor according to claim 2, wherein the solar cells are laid in a lattice. 6. The optical position sensor according to claim 2, wherein the solar cells are laid radially. 7. The optical position sensor according to claim 1, wherein positional information of the light source is detected by a shadow of an accessory. 8. An optical tracking system for tracking a light source based on positional information of the light source by the optical position sensor according to claim 1. 9. The light-tracking power generation system according to claim 8, wherein the position of the light reflector is controlled to irradiate light to a solar cell at a position where light is not directly incident. 10. The optical tracking type power generation system according to claim 9, wherein the solar cell is a solar cell of an optical position sensor at a position where light does not directly enter. 11. The light-tracking power generation system according to claim 9, wherein the light is sunlight.