JP2020184987A - Solar sharing system - Google Patents

Abstract

To provide an inexpensive solar sharing system that is capable of natural lighting sunlight over the entire farmland while performing photovoltaic power generation.SOLUTION: A solar sharing system 51 on a farmland 3 comprises: a solar panel row 5 in which a plurality of solar panels 2 are arrayed in a row; a reflection plate row 6 in which a plurality of reflection plates 1 are arrayed in a row; and a control part 20 capable of adjusting a tilt angle of the plurality of reflection plates. The reflection plate row 6 and the solar panel row 5 are arranged substantially in parallel and alternately in a direction crossing the reflection plate row and the solar panel row.SELECTED DRAWING: Figure 1

Description

The present invention relates to a solar sharing system capable of generating electricity while enabling the growth of positive plants by daylighting farmland.

In recent years, a so-called solar sharing system has been proposed in which pillars such as yagura are erected on farmland and solar panels are installed on the pillars to continue farming while generating solar power. In this solar sharing system, it is possible to generate solar power while continuing farming, so there is no need to abandon or leave cultivated land for solar power generation, and continuous farming is possible. It is possible. On the other hand, in such a solar sharing system, since the solar panel is installed on the farmland, the sunlight by the sunlight is restricted, and the growth of positive plants and semi-positive plants that prefer sunlight is hindered.

Patent Document 1 describes a configuration in which a plurality of translucent portions are provided in a solar panel to generate solar power and in consideration of sunshine on farmland.
Further, Patent Document 2 describes a configuration in which an LED is attached to the back side of a solar cell to illuminate a plant to grow the plant.

Patent Document 1: Japanese Patent Application Laid-Open No. 2018-0821333 Patent Document 2: Japanese Patent Application Laid-Open No. 2018-093854

However, the one described in Patent Document 1 has a problem that although sunlight enters the farmland through the translucent portion, the shadow due to the solar cell portion of the solar panel is not eliminated and the lighting is insufficient because the solar radiation is weakened. was there.
Further, although the one described in Patent Document 2 can irradiate the farmland with light by the LED, there is a possibility that the taste when the grown plant is eaten may be different from the growth of the plant by sunlight, and the LED There is a problem that energy for equipment and LED irradiation is required and the cost is high.

An object of the present invention is to solve the above problems and to realize an inexpensive solar sharing system that enables daylighting of the entire farmland while generating solar power.

In order to solve the above problems, the present invention is a solar sharing system on farmland.
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
Provided is a solar sharing system characterized in that the reflector row and the solar panel row are arranged substantially in parallel and alternately in a direction intersecting the reflector row and the solar panel row.

With this configuration, it is possible to realize an inexpensive solar sharing system that reduces uneven solar radiation, which has been used in the past, by enabling sunlight to be collected over a wide area of farmland while generating solar power.

The control unit may have a configuration in which the inclination angle can be changed so as to track the reflector in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range.
With this configuration, the entire farmland can be evenly irradiated with sunlight.

The reflector includes a first reflecting surface and a second reflecting surface provided on the back surface of the first reflecting surface, and the first reflecting surface and the second reflecting surface have a convex shape. May be good.
With this configuration, even when the solar sharing system is arranged in the east-west direction, sunlight can be efficiently collected on the farmland.

The control unit may be configured to control so that the difference between the inclination angle of the solar panel and the inclination angle of the reflector is 90 °.
With this configuration, it is possible to generate electricity most efficiently and to efficiently illuminate farmland.

The control unit may be configured to control each inclination angle to 0 ° so that all the solar panels and all the reflectors are horizontal at night and during strong winds.
With this configuration, it is possible to prevent damage to the solar sharing system in response to sudden changes in the weather.

An irrigation faucet may be provided on or around the farmland.
By providing the irrigation faucet near the ground, water can be discharged from the irrigation faucet to the reflector, and the water reflected by the reflector can be irrigated to the farmland.
Further, by providing the irrigation faucet on the upper part of the solar sharing system, the farmland can be irrigated and the solar panel can be washed.
In addition, since photosynthesis starts in the case of continuous sunshine or, for example, in the sunshine after dawn, it may be configured to irrigate before dawn. At that time, the entire farmland can be irrigated by controlling the angle of the reflector.

A light source may be provided near the farmland or the ground around the farmland.
With this configuration, the back of the leaf can also be irradiated with light, and the reflected light reflected from the light source on the swinging reflector can irradiate the entire farmland even at night. Insect repellent effect can be expected by using red or yellow light.

Equipped with monitoring equipment to monitor the growth of plants on the farmland
The control unit may be configured to adjust the inclination angle of the reflector based on the growth state of the plant monitored by the monitoring device.
With this configuration, it is possible to increase the sunshine hours to the slow-growing region.

Further, in order to solve the above problems, the present invention is a solar sharing system on farmland.
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
A first system in which the reflector row and the solar panel row are arranged substantially parallel to each other in the first direction and alternately in a direction intersecting the reflector row and the solar panel row.
A second system in which the reflector rows and the solar panel rows are arranged substantially in parallel in a second direction orthogonal to the first direction and alternately in a direction intersecting the reflector rows and the solar panel rows. It provides a solar sharing system characterized by having it.
With this configuration, it is possible to inexpensively collect sunlight over a wide area of farmland while performing morning and evening solar power generation in addition to daytime solar power generation.

Further, in order to solve the above problems, the present invention is a lighting method in a solar sharing system on farmland.
It is equipped with a solar panel row in which a plurality of solar panels are arranged in a row and a reflector row in which a plurality of reflectors are arranged in a row.
The reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows.
Provided is a daylighting method in a solar sharing system characterized in that the tilt angle is changed and controlled so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range.

With this configuration, it is possible to inexpensively collect sunlight over a wide area of farmland while generating solar power.

With the solar sharing system of the present invention, it is possible to realize an inexpensive solar sharing system that enables daylighting of the entire farmland while generating solar power.

It is a figure explaining the solar sharing system in Example 1 of this invention. It is a figure explaining the reflector in Example 1 of this invention. It is a figure explaining the structure of the control part in the solar sharing system in Example 1 of this invention. It is a side view explaining the swing of the reflector in Example 1 of this invention. It is a figure explaining the reflector in Example 2 of this invention. It is a side view explaining the reflection of sunlight by the reflector in Example 2 of this invention. It is a side view explaining the solar sharing system in Example 3 of this invention. It is a figure explaining the conventional solar sharing system. It is a figure explaining the solar sharing system in Example 4 of this invention. It is a figure explaining the solar sharing system in Example 5 of this invention. It is a figure explaining the solar sharing system in Example 6 of this invention.

Example 1 of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a diagram illustrating a solar sharing system according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating a reflector according to a first embodiment of the present invention. FIG. 3 is a diagram illustrating a configuration of a control unit in the solar sharing system according to the first embodiment of the present invention. FIG. 4 is a side view illustrating the swing of the reflector according to the first embodiment of the present invention.

The solar sharing system 51 according to the first embodiment of the present invention is shown in FIG. Positive plants that prefer sunlight are cultivated on farmland 3. A yagura 4 having a height of about 2.5 m (a height that a cultivator can pass through and may be 2.5 m or more) is assembled on the farmland 3, and a reflector is attached to the ceiling of the yagura 4. A reflector row 6 in which 1s are arranged in a row in the y direction and a solar panel row 5 in which the solar panels 2 are arranged in a row in the y direction are attached. The reflector row 6 and the solar panel row 5 are parallel to each other so that the reflector row 6, the solar panel row 5, the reflector row 6, and the solar panel row 5 are arranged, and the reflector row 6 and the solar panel row are arranged in parallel. It is provided alternately in a direction (x direction) substantially orthogonal to 5. At this time, in the northern hemisphere, the solar sharing system 51 is provided so that the x direction is the south direction, and the plurality of reflectors 1 mainly reflect the sunlight S from the south to the farmland 3 by the solar panel 2. It is possible to illuminate the shaded area. The solar panel 2 can use the energy obtained by solar power generation to swing the reflector 1 and change the inclination angle, which will be described later.

In the first embodiment, a plurality of reflectors 1 and a plurality of solar panels 2 are alternately provided in the south direction (x direction in FIG. 1). That is, by alternately providing the reflectors 1 and the solar panels 2 along the south direction, which is the sunshine direction of the sunlight S, the influence of the shadows by the solar panels 2 is reduced and the light is collected over a wide range of the farmland 3. can do.

In addition, although it is arranged in Example 1, it is not necessarily limited to this and can be changed as appropriate. For example, the reflector row 6 is the reflector row 6, the reflector row 6, the solar panel row 5, the solar panel row 5, the reflector row 6, the reflector row 6, the solar panel row 5, and the solar panel row 5. And the solar panel rows 5 may be arranged in units of a plurality. That is, one or more reflector rows 6 and solar panel rows 5 may be arranged substantially in parallel and alternately.

Conventionally, as shown in FIG. 8, in many cases, solar panel rows 5 in which a plurality of solar panels 2 are arranged in the y direction are closely arranged in the x direction, and power generation is sufficiently possible, but on farmland 3. There was a shadow and the lighting was insufficient. For this reason, negative plants such as shiitake mushrooms grow, but the growth of positive plants such as tomatoes and watermelons and semi-positive plants such as blueberries is inhibited. In addition, if a gap is provided between the solar panel rows 5 in consideration of daylighting, the daylighting is improved, but the amount of power generation is reduced, and power is consumed for facilities in facility gardening such as farmland or greenhouses. In this case, there was a problem that power purchase was required. On the other hand, the solar sharing system 51 according to the first embodiment of the present invention can collect light on the farmland 3 that is shaded by the solar panel 2 by the reflector 1 while generating electricity.

Next, the reflector 1 in the first embodiment will be described in detail with reference to FIG. In the reflector 1, the first reflecting surface 31 is attached to the support column 33 by bolts, and the first reflecting surface 31 reflects sunlight S to irradiate the farmland 3. The first reflecting surface 31 is made of stainless steel having a length of 60 cm and a width of 45 cm in a convex shape, and can collect light in a wider range. A plurality of reflectors 1 are attached to the columns 33 and are rotatably supported by the yagura 4 as a reflector row 6. A drive rod 34 is provided on the leftmost reflector 1 in the single row of reflector rows 6, and a drive rod 35 is provided on the rightmost reflector 1. Then, the support rod 33 is rotated by compressing or expanding the drive rod 34 and the drive rod 35, and as will be described later, the first reflective surface 31 in the single row of reflector rows 6 is set at a swing angle ε in a fixed angle range. It can be rocked. As a result, the sunlight S can be irradiated over a wide range at one inclination angle θ (see FIG. 1). Further, by compressing or expanding the drive rod 34 and the drive rod 35, the inclination angle θ of the first reflecting surface 31 in the single row of reflector rows 6 can be changed so as to be tracked in conjunction with the elevation angle of the sun. The drive rod 34 and the drive rod 35 are composed of an air cylinder and can be driven by a control unit 20 described later. An inclinometer 36 is provided on the back side of the first reflecting surface 31 to measure the swing angle ε (see FIG. 4) and the inclination angle θ.

The control unit 20 that swings and tilts the reflector 1 will be described with reference to FIG. The electric power generated by the solar panel 2 is subjected to DC-DC conversion or the like by the power conditioner 21 and stored in a storage battery (not shown), and the amount of power generation is input to the computer 24 one by one. The anemometer 22 is provided near the ceiling of the yagura 4, and inputs the measured wind speed to the computer 24 one by one. In the unlikely event that the wind speed exceeds a predetermined value, the reflector 1 and the solar panel 2 are controlled to be horizontal to prevent damage due to the wind.

The inclinometer 36 attached to the first reflecting surface 31 of the reflector 1 inputs the angle from the horizontal plane to the computer 24 one by one by measuring the gravitational acceleration. The computer 24 constantly monitors whether the specified swing angle and inclination angle are met, and whether there is any abnormality in the device. Then, the computer 24 is connected to the Internet (not shown), calculates the elevation angle and position of the sun from the calendar and the date and time, and outputs the inclination angle φ (see FIG. 1) of the solar panel 2 to the solar panel drive unit 25. To do. Further, the computer 24 outputs the swing angle ε and the inclination angle θ of the reflector 1 to the reflector drive unit 26. As a result, the reflector drive unit 26 drives the drive rods 34 and 35, rotates the support column 33 in the reflector 1, swings the first reflection surface 31, and tracks in conjunction with the elevation angle of the sun. The inclination angle θ is changed so as to. Further, when the computer 24 detects an abnormality in the reflector 1 or the solar panel 2, it notifies the administrator's smartphone or the like.

The operation of the reflector 1 and the solar panel 2 will be described with reference to FIG. In the first embodiment, the solar sharing system 51 is arranged from north to south, and the first reflecting surface 31 of the reflector 1 and the solar panel 2 are arranged so as to face the south direction (x direction). Then, all the solar panels 2 are interlocked so as to be perpendicular to the sunlight S, and the solar panel drive unit 25 is tilted at an inclination angle φ. At this time, it is desirable that the inclination angle θ of the reflector 1 is inclined so that θ− (−φ) = 90 ° with respect to the inclination angle φ of the solar panel. By driving all the reflectors 1 in the reflector drive direction 11 in conjunction with the drive rods 34 and 35 and inclining them at the above angles, the sunlight S can be efficiently collected on the farmland 3.

That is, when the inclination angle of the solar panel 2 and the reflector 1 is 0 °, the solar panel 2 and the reflector 1 are horizontal, and when the angle of inclination to the sky side is the positive direction, the control unit 20 , The inclination angle φ of the solar panel 2 is controlled to be 90 ° smaller than the inclination angle θ of the reflector 1.

Then, all the reflectors 1 inclined to the inclination angle θ are oscillated by the oscillating angle ε which is a constant angle range. As a result, the sunlight S spreads over the entire farmland 3, and sufficient lighting can be obtained. The swing angle ε varies depending on the height of the yagura 4, but it is preferably about ± 20 °. The swing of the reflector 1 is performed by interlocking the columns 33 of all the reflectors 1.
Further, by swinging the reflector 1 at a swing angle ε, a bird-proof / insect-proof effect can be expected.

That is, the control unit 20 changes the inclination angle θ so as to track the reflector 1 in conjunction with the elevation angle of the sun while swinging the reflector 1 at a swing angle ε which is a constant angle range. As a result, as long as there is sunlight from the sunlight S, the entire farmland 3 can be evenly illuminated, and the growth of positive plants such as tomatoes and watermelons and semi-positive plants such as blueberries can be promoted.
In addition, during the daytime when the sunlight is strong, it is possible to actively block the sunlight with the reflector 1 to prevent leaf burning, and in order to ensure the total daily sunshine on the leaf surface, the Asahi, By irradiating the setting sun from directly above, it is possible to improve the irradiation efficiency of the leaf surface, which was conventionally shielded by oblique light.
Further, during the daytime when the sunlight is strong, the control unit 20 reciprocates between a state in which the reflector is leveled to completely block the sunlight and an appropriate angle of the reflector 1 based on the elevation angle of sunlight at an appropriate interval. By controlling the leaves, it is possible to secure a certain amount of sunlight on the leaf surface while preventing leaf burning.

The control unit 20 controls the inclination angle φ and the inclination angle θ to 0 ° so that all the solar panels 2 and all the reflectors 1 are horizontal at night and in strong winds. As a result, it is possible to prevent damage to the solar panel 2 and the reflector 1 and foreign matter from entering the farmland 3 due to sudden changes in the weather, and it is possible to prevent radiative cooling and frost in winter.

In the first embodiment, the first reflective surface 31 is made of stainless steel having a length of 60 cm and a width of 45 cm in a convex shape, but the present invention is not necessarily limited to this and can be changed as appropriate. For example, the first reflecting surface 31 may be flat or may have a spherical shape. By having a spherical shape, the sunrise and sunset when the solar sharing system 51 is arranged in the north and south can be efficiently reflected on the farmland 3. Further, stainless steel having a width of 120 cm to 180 cm may be used. Further, although the first reflecting surface 31 is made of stainless steel, it may be made of another metal or synthetic resin, or may be made of a mirror or glass.

Further, in the first embodiment, the solar panel row 5 in which the solar panels 2 are arranged in a row in the y direction and the reflector row 6 in which the reflectors 1 are arranged in a row in the y direction are alternately arranged in the x direction substantially orthogonal to each other. Although it is arranged, it is not necessarily limited to this and can be changed as appropriate. For example, the solar panel rows 5 and the reflector rows 6 may be arranged alternately in a direction having an angle of about 45 °, or may be arranged alternately in a direction having an angle of about 120 °. At least, the solar panel row 5 in which the solar panels 2 are arranged in a row and the reflector row 6 in which the reflectors 1 are arranged in a row may be arranged in parallel and alternately in a direction intersecting these rows.

Further, in the first embodiment, as shown in FIG. 1, the reflector 1 and the solar panel 2 are provided at the same height in the z direction, but the height is not necessarily limited to this and can be appropriately changed. For example, the height of the reflector 1 may be lower than the height of the solar panel 2. As a result, when the sunlight S is located near directly above, the reflector 1 can reflect the sunlight S without being in the shadow of the solar panel 2. Further, the height of the reflector 1 may be higher than the height of the solar panel 2. In this case, the solar panel 2 can be irradiated with the sunlight S reflected by the reflector 1. Further, the height of the reflector 1 and the solar panel 2 may be variably configured to be the height suitable for the farmland 3.

Further, in the first embodiment, all the reflectors 1 and all the solar panels 2 are configured to be driven in conjunction with each other, but the present invention is not limited to this and can be appropriately changed. For example, the reflector 1 and the solar panel 2 may be individually driven and controlled. As a result, the degree of daylighting can be changed depending on the type of plant cultivated on the farmland 3 (when cultivating a negative plant, the daylighting by the reflector 1 is controlled to be reduced). Further, all the solar panels 2 may be driven in conjunction with each other, and the reflector 1 may be controlled to be individually driven. Further, the solar panel 2 may be maintained at a horizontal or constant inclination angle φ, and only the reflector 1 may be configured to swing and drive the inclination angle change. As a result, power generation and daylighting can be realized with less energy when the solar sharing system 51 is arranged in the east-west direction.

Further, in the first embodiment, the solar panel driving unit 25 drives the solar panel 2 and the reflector driving unit 26 drives the reflecting plate 1, but the present invention is not necessarily limited to this and can be changed as appropriate. is there. For example, one drive unit may be configured to drive the solar panel 2 and the reflector 1. In this case, the reflector 1 may be driven while maintaining a relationship in which the inclination angle θ of the reflector 1 is 90 ° larger than the inclination angle φ of the solar panel 2.

As described above, in the first embodiment, the solar sharing system in the farmland
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
While generating solar power by a solar sharing system characterized in that the reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows. , It is possible to realize an inexpensive solar sharing system that enables sunlight to be collected over a wide area of farmland.

In addition, the control unit can change the inclination angle so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range, so that the entire farmland is evenly illuminated by sunlight. It can be possible.

Furthermore, it is a lighting method in the solar sharing system on farmland.
It is equipped with a solar panel row in which a plurality of solar panels are arranged in a row and a reflector row in which a plurality of reflectors are arranged in a row.
The reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows.
While performing solar power generation by the daylighting method in the solar sharing system, which is characterized in that the tilt angle is changed and controlled so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range. , It is possible to evenly collect sunlight over the entire farmland.

The second embodiment of the present invention is different from the first embodiment in that the second reflecting surface is provided on the back side of the first reflecting surface. The second embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram illustrating a reflector according to a second embodiment of the present invention. FIG. 6 is a side view illustrating the reflection of sunlight by the reflector in the second embodiment of the present invention.

As shown in FIG. 5, the reflector 101 in the second embodiment includes a second reflecting surface 32 on the back side of the first reflecting surface 31, and the second reflecting surface 32 emits light in a direction opposite to that of the first reflecting surface 31. It is configured to reflect. The second reflecting surface 32 is made of stainless steel like the first reflecting surface 31 and is attached to the support column 33 by bolts. Then, by driving (compressing or expanding) the drive rods 34 and 35, the support rods 33 can be used as a fulcrum to rotate, change the inclination angle θ, and swing. Further, in the second embodiment, the reflecting surface of the second reflecting surface 32 is configured so as to be a convex surface in a direction opposite to the convex surface direction of the first reflecting surface 31.

The solar sharing system 151 according to the second embodiment is mainly arranged so that the x direction faces the east direction. Then, the first reflecting surface 31 is arranged, for example, facing east, and the second reflecting surface 32 is arranged facing west. During the time when the morning sun hits from the east, the sunlight S is reflected on the first reflecting surface 31 and daylighted on the farmland 3, and during the time when the setting sun hits from the west, the sunlight S is reflected on the second reflecting surface 32. Daylight 3 on farmland 3. As a result, even if the solar sharing system 151 is arranged in the east and west, the sunlight S can be efficiently collected in the farmland 3.

In the second embodiment, the first reflecting surface 31 and the second reflecting surface are made of stainless steel, but the present invention is not limited to this and can be changed as appropriate. For example, it may be composed of another metal or synthetic resin, or it may be composed of a mirror or glass.

As described above, in the second embodiment, the reflector includes the first reflecting surface and the second reflecting surface provided on the back surface of the first reflecting surface, and the first reflecting surface and the second reflecting surface. Due to the convex shape, even when the solar sharing system is arranged in the east-west direction, sunlight can be efficiently collected on the farmland.

Example 3 of the present invention is different from Example 1 in that the reflector 1 and the solar panel 2 are arranged on the ceiling portion of the greenhouse. The third embodiment will be described with reference to FIG. 7. FIG. 7 is a side view illustrating the solar sharing system according to the third embodiment of the present invention.

As shown in FIG. 7, the solar sharing system 251 in the third embodiment is arranged so that the x direction is the south direction, and the reflector 1 and the solar panel 2 are arranged on the ceiling portion of the greenhouse 204. The ceiling of the greenhouse 204 is inclined to the south surface and the north surface, and the solar panel 2 is arranged on the south surface and the reflector 1 is arranged on the north surface. The reflector 1 is provided with a first reflective surface 31 having a convex shape, and sunlight S can be collected on the farmland 3 in the greenhouse.

Then, as in the first embodiment, the control unit swings the reflector 1 in a certain angle range and changes the inclination angle θ so as to track in conjunction with the elevation angle of the sun, thereby efficiently covering the entire farmland 3. It can be illuminated.

In the third embodiment, the solar panel 2 is arranged on the south surface and the reflector 1 is arranged on the north surface, but the present invention is not limited to this, and changes can be made as appropriate. For example, the solar panel 2 and the reflector 1 may be arranged substantially in parallel and alternately on the south surface. Further, the solar sharing system 251 may be arranged in the east-west direction, and the solar panel 2 and the reflector 1 may be arranged substantially in parallel and alternately on both the east side and the west side.

Example 4 of the present invention is different from Examples 1 to 3 in that a faucet for irrigation is provided on or around the farmland. The fourth embodiment will be described with reference to FIG. FIG. 9 is a diagram illustrating a solar sharing system according to a fourth embodiment of the present invention.

The solar sharing system 451 according to the fourth embodiment includes a irrigation faucet 460 near the ground on or around the farmland. A plurality of irrigation faucets 460 may be provided, or one faucet may be provided. Water is discharged from the irrigation faucet 460 toward the reflector 1 so that the water reflected by the water discharged toward the reflector 1 is irrigated toward the farmland 3. As a result, the plants in the farmland 3 can be irrigated in the sunny weather or at night.

When water is radiated from the irrigation faucet 460 to irrigate the plants of the farmland 3 through the reflector 1, it is desirable to swing the reflector 1 so that the entire farmland 3 can be irrigated.

Further, in the fourth embodiment, the irrigation faucet 460 is provided near the farmland or the ground around the farmland, but the present invention is not limited to this and can be appropriately changed. For example, the irrigation faucet may be provided above the farmland or around the farmland, for example, above the solar sharing system 451. As a result, the plants on the farmland 3 can be irrigated and the surface of the solar panel 2 can be washed.

Example 5 of the present invention is different from Examples 1 to 4 in that a light source is provided near the farmland or the ground around the farmland. The fifth embodiment will be described with reference to FIG. FIG. 10 is a diagram illustrating a solar sharing system according to a fifth embodiment of the present invention.

The solar sharing system 551 according to the fifth embodiment includes a light source 560 near the ground on or around the farmland. A plurality of light sources 560 may be provided, or one light source may be provided. The light source 560 comprises a red or yellow LED. Red or yellow light is emitted from the light source 560 toward the reflector 1, and the light reflected by the reflector 1 is applied to the plants on the farmland 3. Further, since the light source 560 is provided near the ground, it is possible to irradiate the back of the leaves of the plant with light. As a result, it can be used as a supplementary light for plant growth, and an insect repellent effect can be expected by using red or yellow light.

When irradiating light from the light source 560 and irradiating the plants on the farmland 3 through the reflector 1, the reflector 1 can be swung to control the entire farmland 3 so that the light can be irradiated. desirable.

Further, in the fifth embodiment, the red or yellow LED is used as the light source 560, but the present invention is not necessarily limited to this, and can be appropriately changed. An LED of any color may be used, or a lamp other than the LED may be used.

Example 6 of the present invention is different from Examples 1 to 5 in that it is provided with a monitoring device for monitoring the growth state of plants on the farmland.

In the sixth embodiment, a monitoring device for monitoring the growth state of the plant on the farmland 3 is provided, and the control unit adjusts the inclination angle θ of the reflector 1 based on the growth state of the plant monitored by the monitoring device. This makes it possible to increase the hours of sunshine in the slow-growing region.

The monitoring device may be a normal camera, an NDVI device (Normalized Difference Vegetation Index vegetation index measuring device), or a leaf color analysis device. Further, the position where the monitoring device is provided may be above the farmland 3, and may be attached to the upper part of the solar sharing system, for example.

Example 6 of the present invention is different from Examples 1 to 5 in that both the first-way solar sharing system and the second-way solar sharing system intersecting the first direction are provided in one farmland. .. The sixth embodiment will be described with reference to FIG. FIG. 11 is a side view illustrating the solar sharing system according to the sixth embodiment of the present invention.

The solar sharing system 651 according to the sixth embodiment includes a row of reflectors in which a plurality of reflectors 601 are arranged in a row facing south So (first direction) and a row of solar panels in which a plurality of solar panels 602 are arranged in a row. A plurality of first systems 610 are provided, and a row of reflectors in which a plurality of reflectors 611 are arranged in a row in the direction of east E west W (second direction orthogonal to the first direction) and a plurality of solar panels 612 are provided. A plurality of second systems 620 composed of a row of solar panels arranged in a row are provided.

As a result, in the morning and evening, the plurality of reflectors in the second system 620 swing along the movement of the sun to collect sunlight on the farmland 3, and in the daytime, the plurality of reflectors in the first system 610. It is possible to illuminate the farmland 3 by swinging around 601 along with the movement of the sun. Therefore, daylighting can be performed efficiently throughout the day.

The reflector 601 in the first system 610 and the reflector 611 in the second system 620 can be tilted or swung by any drive structure, but the reflector 601 and the reflector 611 in one drive structure. Can also be driven. For example, a control rod or the like for moving the drive rod of the reflector 601 in the first system 610 and the drive rod of the reflector 611 in the second system 620 may be provided and driven so as to be interlocked with each other.

Further, the inclination angle θ of the reflector 601 may be adjusted so that the sunlight is reflected by the reflector 601 of the first system 610 and the sunlight is inserted into the solar panel 602 of the first system 610 in the daytime. Similarly, in the morning and evening, the inclination angle θ of the reflector 611 may be adjusted so that the sunlight is reflected by the reflector 611 of the second system 620 and the sunlight is inserted into the solar panel 612 of the second system 620. As a result, the amount of power generated by the solar panel 602 and the solar panel 612 is improved.

Further, the prohibition inclination angle may be set in advance so that the reflector 601 in the first system 610 or the reflector 611 in the second system 620 does not reflect sunlight to a neighboring house. As a result, the solar sharing system can be operated so as not to inconvenience neighboring houses.

In the sixth embodiment, a plurality of reflectors 601 are arranged in a row in the south So direction (first direction), and a plurality of reflectors 611 are arranged in the east E west W direction (second direction orthogonal to the first direction). It is configured to be arranged in a row, but it is not necessarily limited to this and can be changed as appropriate. For example, in the case of the Southern Hemisphere, a plurality of reflectors 601 are arranged in a row in the north direction (first direction), and a plurality of reflectors 611 are arranged in a row in the east E west W direction (second direction orthogonal to the first direction). It may be configured to be arranged in. That is, the plurality of reflectors 601 may be arranged in a row in the first direction, and the plurality of reflectors 611 may be arranged in a row in the second direction orthogonal to the first direction.

Further, the first direction and the second direction do not have to be orthogonal to each other. The direction may be slightly shifted from the orthogonal direction according to the actual situation of the farmland. That is, the first direction and the second direction may be directions that intersect each other.

Further, in the sixth embodiment, a plurality of first systems and a plurality of second systems are provided, but the present invention is not necessarily limited to this and can be changed as appropriate. For example, only one or both of them may be provided.

As described above, in the sixth embodiment, the solar sharing system in the farmland
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
A first system in which the reflector row and the solar panel row are arranged substantially parallel to each other in the first direction and alternately in a direction intersecting the reflector row and the solar panel row.
It has a second system in which the reflector row and the solar panel row are arranged substantially in parallel in a second direction and alternately in a direction intersecting the reflector row and the solar panel row.
The solar sharing system, which is characterized in that the first direction and the second direction intersect each other, generate solar power in the morning and evening in addition to solar power in the daytime, and at low cost. It is possible to collect sunlight in a wide range.

In addition, since low elevation angles of sunlight in the first half of the morning and the second half of the afternoon can be irradiated from almost directly above the plants on the farmland, it is possible to improve the irradiation efficiency of the foliage surface, which has not been exposed to the sun due to the oblique light in the past. Furthermore, it can be expected that the nitrate ion concentration will decrease when sunlight with a low altitude has a large amount of red color and is exposed to light having a high R / B ratio from above the leaf surface. Insect repellent effect can be expected by increasing the red color ratio.

The solar sharing system and the lighting method in the solar sharing system of the present invention can be widely used for farmland cultivated while generating electricity.

1: Reflector
2: Solar panel
3: Farmland
4: Yagra
5: Solar panel row
6: Reflector row
11: Reflector drive direction
20: Control unit
21: Power conditioner
22: Anemometer
24: Computer
25: Solar panel drive unit
26: Reflector drive unit
31: First reflective surface
32: Second reflective surface
33: Prop
34: Drive rod
35: Drive rod
36: Tiltmeter
51: Solar sharing system
101: Reflector
151: Solar sharing system
251: Solar sharing system
351: Solar sharing system
451: Solar sharing system
551: Solar sharing system
651: Solar sharing system
460: Faucet for irrigation
560: Light source
601: Reflector
602: Solar panel
610: First system
611: Reflector
612: Solar panel
620: Second system
S: Sunlight
θ: Tilt angle
φ: Tilt angle
ε: Swing angle
So: South
E: East
W: West

The present invention relates to a solar sharing system capable of generating electricity while enabling the growth of positive plants by daylighting farmland.

In recent years, a so-called solar sharing system has been proposed in which pillars such as yagura are erected on farmland and solar panels are installed on the pillars to continue farming while generating solar power. In this solar sharing system, it is possible to generate solar power while continuing farming, so there is no need to abandon or leave cultivated land for solar power generation, and continuous farming is possible. It is possible. On the other hand, in such a solar sharing system, since the solar panel is installed on the farmland, the sunlight by the sunlight is restricted, and the growth of positive plants and semi-positive plants that prefer sunlight is hindered.

Patent Document 1 describes a configuration in which a plurality of translucent portions are provided in a solar panel to generate solar power and in consideration of sunshine on farmland.
Further, Patent Document 2 describes a configuration in which an LED is attached to the back side of a solar cell to illuminate a plant to grow the plant.

Patent Document 1: Japanese Patent Application Laid-Open No. 2018-0821333 Patent Document 2: Japanese Patent Application Laid-Open No. 2018-093854

However, the one described in Patent Document 1 has a problem that although sunlight enters the farmland through the translucent portion, the shadow due to the solar cell portion of the solar panel is not eliminated and the lighting is insufficient because the solar radiation is weakened. was there.
Further, although the one described in Patent Document 2 can irradiate the farmland with light by the LED, there is a possibility that the taste when the grown plant is eaten may be different from the growth of the plant by sunlight, and the LED There is a problem that energy for equipment and LED irradiation is required and the cost is high.

An object of the present invention is to solve the above problems and to realize an inexpensive solar sharing system that enables daylighting of the entire farmland while generating solar power.

In order to solve the above problems, the present invention is a solar sharing system on farmland.
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
Provided is a solar sharing system characterized in that the reflector row and the solar panel row are arranged substantially in parallel and alternately in a direction intersecting the reflector row and the solar panel row.

With this configuration, it is possible to realize an inexpensive solar sharing system that reduces uneven solar radiation, which has been used in the past, by enabling sunlight to be collected over a wide area of farmland while generating solar power.

The control unit may have a configuration in which the inclination angle can be changed so as to track the reflector in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range.
With this configuration, the entire farmland can be evenly irradiated with sunlight.

The reflector includes a first reflecting surface and a second reflecting surface provided on the back surface of the first reflecting surface, and the first reflecting surface and the second reflecting surface have a convex shape. May be good.
With this configuration, even when the solar sharing system is arranged in the east-west direction, sunlight can be efficiently collected on the farmland.

The control unit may be configured to control so that the difference between the inclination angle of the solar panel and the inclination angle of the reflector is 90 °.
With this configuration, it is possible to generate electricity most efficiently and to efficiently illuminate farmland.

The control unit may be configured to control each inclination angle to 0 ° so that all the solar panels and all the reflectors are horizontal at night and during strong winds.
With this configuration, it is possible to prevent damage to the solar sharing system in response to sudden changes in the weather.

An irrigation faucet may be provided on or around the farmland.
By providing the irrigation faucet near the ground, water can be discharged from the irrigation faucet to the reflector, and the water reflected by the reflector can be irrigated to the farmland.
Further, by providing the irrigation faucet on the upper part of the solar sharing system, the farmland can be irrigated and the solar panel can be washed.
In addition, since photosynthesis starts in the case of continuous sunshine or, for example, in the sunshine after dawn, it may be configured to irrigate before dawn. At that time, the entire farmland can be irrigated by controlling the angle of the reflector.

A light source may be provided near the farmland or the ground around the farmland.
With this configuration, the back of the leaf can also be irradiated with light, and the reflected light reflected from the light source on the swinging reflector can irradiate the entire farmland even at night. Insect repellent effect can be expected by using red or yellow light.

Equipped with monitoring equipment to monitor the growth of plants on the farmland
The control unit may be configured to adjust the inclination angle of the reflector based on the growth state of the plant monitored by the monitoring device.
With this configuration, it is possible to increase the sunshine hours to the slow-growing region.

Further, in order to solve the above problems, the present invention is a solar sharing system on farmland.
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
A first system in which the reflector row and the solar panel row are arranged substantially parallel to each other in the first direction and alternately in a direction intersecting the reflector row and the solar panel row.
A second system in which the reflector rows and the solar panel rows are arranged substantially in parallel in a second direction orthogonal to the first direction and alternately in a direction intersecting the reflector rows and the solar panel rows. It provides a solar sharing system characterized by having it.
With this configuration, it is possible to inexpensively collect sunlight over a wide area of farmland while performing morning and evening solar power generation in addition to daytime solar power generation.

Further, in order to solve the above problems, the present invention is a lighting method in a solar sharing system on farmland.
It is equipped with a solar panel row in which a plurality of solar panels are arranged in a row and a reflector row in which a plurality of reflectors are arranged in a row.
The reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows.
Provided is a daylighting method in a solar sharing system characterized in that the tilt angle is changed and controlled so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range.

With this configuration, it is possible to inexpensively collect sunlight over a wide area of farmland while generating solar power.

With the solar sharing system of the present invention, it is possible to realize an inexpensive solar sharing system that enables daylighting of the entire farmland while generating solar power.

It is a figure explaining the solar sharing system in Example 1 of this invention. It is a figure explaining the reflector in Example 1 of this invention. It is a figure explaining the structure of the control part in the solar sharing system in Example 1 of this invention. It is a side view explaining the swing of the reflector in Example 1 of this invention. It is a figure explaining the reflector in Example 2 of this invention. It is a side view explaining the reflection of sunlight by the reflector in Example 2 of this invention. It is a side view explaining the solar sharing system in Example 3 of this invention. It is a figure explaining the conventional solar sharing system. It is a figure explaining the solar sharing system in Example 4 of this invention. It is a figure explaining the solar sharing system in Example 5 of this invention. It is a figure explaining the solar sharing system in Example 7 of this invention.

Example 1 of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a diagram illustrating a solar sharing system according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating a reflector according to a first embodiment of the present invention. FIG. 3 is a diagram illustrating a configuration of a control unit in the solar sharing system according to the first embodiment of the present invention. FIG. 4 is a side view illustrating the swing of the reflector according to the first embodiment of the present invention.

The solar sharing system 51 according to the first embodiment of the present invention is shown in FIG. Positive plants that prefer sunlight are cultivated on farmland 3. A yagura 4 having a height of about 2.5 m (a height that a cultivator can pass through and may be 2.5 m or more) is assembled on the farmland 3, and a reflector is attached to the ceiling of the yagura 4. A reflector row 6 in which 1s are arranged in a row in the y direction and a solar panel row 5 in which the solar panels 2 are arranged in a row in the y direction are attached. The reflector row 6 and the solar panel row 5 are parallel to each other so that the reflector row 6, the solar panel row 5, the reflector row 6, and the solar panel row 5 are arranged, and the reflector row 6 and the solar panel row are arranged in parallel. It is provided alternately in a direction (x direction) substantially orthogonal to 5. At this time, in the northern hemisphere, the solar sharing system 51 is provided so that the x direction is the south direction, and the plurality of reflectors 1 mainly reflect the sunlight S from the south to the farmland 3 by the solar panel 2. It is possible to illuminate the shaded area. The solar panel 2 can use the energy obtained by solar power generation to swing the reflector 1 and change the inclination angle, which will be described later.

In the first embodiment, a plurality of reflectors 1 and a plurality of solar panels 2 are alternately provided in the south direction (x direction in FIG. 1). That is, by alternately providing the reflectors 1 and the solar panels 2 along the south direction, which is the sunshine direction of the sunlight S, the influence of the shadows by the solar panels 2 is reduced and the light is collected over a wide range of the farmland 3. can do.

In addition, although it is arranged in Example 1, it is not necessarily limited to this and can be changed as appropriate. For example, the reflector row 6 is the reflector row 6, the reflector row 6, the solar panel row 5, the solar panel row 5, the reflector row 6, the reflector row 6, the solar panel row 5, and the solar panel row 5. And the solar panel rows 5 may be arranged in units of a plurality. That is, one or more reflector rows 6 and solar panel rows 5 may be arranged substantially in parallel and alternately.

Conventionally, as shown in FIG. 8, in many cases, solar panel rows 5 in which a plurality of solar panels 2 are arranged in the y direction are closely arranged in the x direction, and power generation is sufficiently possible, but on farmland 3. There was a shadow and the lighting was insufficient. For this reason, negative plants such as shiitake mushrooms grow, but the growth of positive plants such as tomatoes and watermelons and semi-positive plants such as blueberries is inhibited. In addition, if a gap is provided between the solar panel rows 5 in consideration of daylighting, the daylighting is improved, but the amount of power generation is reduced, and power is consumed for facilities in facility gardening such as farmland or greenhouses. In this case, there was a problem that power purchase was required. On the other hand, the solar sharing system 51 according to the first embodiment of the present invention can collect light on the farmland 3 that is shaded by the solar panel 2 by the reflector 1 while generating electricity.

Next, the reflector 1 in the first embodiment will be described in detail with reference to FIG. In the reflector 1, the first reflecting surface 31 is attached to the support column 33 by bolts, and the first reflecting surface 31 reflects sunlight S to irradiate the farmland 3. The first reflecting surface 31 is made of stainless steel having a length of 60 cm and a width of 45 cm in a convex shape, and can collect light in a wider range. A plurality of reflectors 1 are attached to the columns 33 and are rotatably supported by the yagura 4 as a reflector row 6. A drive rod 34 is provided on the leftmost reflector 1 in the single row of reflector rows 6, and a drive rod 35 is provided on the rightmost reflector 1. Then, the support rod 33 is rotated by compressing or expanding the drive rod 34 and the drive rod 35, and as will be described later, the first reflective surface 31 in the single row of reflector rows 6 is set at a swing angle ε in a fixed angle range. It can be rocked. As a result, the sunlight S can be irradiated over a wide range at one inclination angle θ (see FIG. 1). Further, by compressing or expanding the drive rod 34 and the drive rod 35, the inclination angle θ of the first reflecting surface 31 in the single row of reflector rows 6 can be changed so as to be tracked in conjunction with the elevation angle of the sun. The drive rod 34 and the drive rod 35 are composed of an air cylinder and can be driven by a control unit 20 described later. An inclinometer 36 is provided on the back side of the first reflecting surface 31 to measure the swing angle ε (see FIG. 4) and the inclination angle θ.

The control unit 20 that swings and tilts the reflector 1 will be described with reference to FIG. The electric power generated by the solar panel 2 is subjected to DC-DC conversion or the like by the power conditioner 21 and stored in a storage battery (not shown), and the amount of power generation is input to the computer 24 one by one. The anemometer 22 is provided near the ceiling of the yagura 4, and inputs the measured wind speed to the computer 24 one by one. In the unlikely event that the wind speed exceeds a predetermined value, the reflector 1 and the solar panel 2 are controlled to be horizontal to prevent damage due to the wind.

The inclinometer 36 attached to the first reflecting surface 31 of the reflector 1 inputs the angle from the horizontal plane to the computer 24 one by one by measuring the gravitational acceleration. The computer 24 constantly monitors whether the specified swing angle and inclination angle are met, and whether there is any abnormality in the device. Then, the computer 24 is connected to the Internet (not shown), calculates the elevation angle and position of the sun from the calendar and the date and time, and outputs the inclination angle φ (see FIG. 1) of the solar panel 2 to the solar panel drive unit 25. To do. Further, the computer 24 outputs the swing angle ε and the inclination angle θ of the reflector 1 to the reflector drive unit 26. As a result, the reflector drive unit 26 drives the drive rods 34 and 35, rotates the support column 33 in the reflector 1, swings the first reflection surface 31, and tracks in conjunction with the elevation angle of the sun. The inclination angle θ is changed so as to. Further, when the computer 24 detects an abnormality in the reflector 1 or the solar panel 2, it notifies the administrator's smartphone or the like.

The operation of the reflector 1 and the solar panel 2 will be described with reference to FIG. In the first embodiment, the solar sharing system 51 is arranged from north to south, and the first reflecting surface 31 of the reflector 1 and the solar panel 2 are arranged so as to face the south direction (x direction). Then, all the solar panels 2 are interlocked so as to be perpendicular to the sunlight S, and the solar panel drive unit 25 is tilted at an inclination angle φ. At this time, it is desirable that the inclination angle θ of the reflector 1 is inclined so that θ− (−φ) = 90 ° with respect to the inclination angle φ of the solar panel. By driving all the reflectors 1 in the reflector drive direction 11 in conjunction with the drive rods 34 and 35 and inclining them at the above angles, the sunlight S can be efficiently collected on the farmland 3.

That is, when the inclination angle of the solar panel 2 and the reflector 1 is 0 °, the solar panel 2 and the reflector 1 are horizontal, and when the angle of inclination to the sky side is the positive direction, the control unit 20 , The inclination angle φ of the solar panel 2 is controlled to be 90 ° smaller than the inclination angle θ of the reflector 1.

Then, all the reflectors 1 inclined to the inclination angle θ are oscillated by the oscillating angle ε which is a constant angle range. As a result, the sunlight S spreads over the entire farmland 3, and sufficient lighting can be obtained. The swing angle ε varies depending on the height of the yagura 4, but it is preferably about ± 20 °. The swing of the reflector 1 is performed by interlocking the columns 33 of all the reflectors 1.
Further, by swinging the reflector 1 at a swing angle ε, a bird-proof / insect-proof effect can be expected.

That is, the control unit 20 changes the inclination angle θ so as to track the reflector 1 in conjunction with the elevation angle of the sun while swinging the reflector 1 at a swing angle ε which is a constant angle range. As a result, as long as there is sunlight from the sunlight S, the entire farmland 3 can be evenly illuminated, and the growth of positive plants such as tomatoes and watermelons and semi-positive plants such as blueberries can be promoted.
In addition, during the daytime when the sunlight is strong, it is possible to actively block the sunlight with the reflector 1 to prevent leaf burning, and in order to ensure the total daily sunshine on the leaf surface, the Asahi, By irradiating the setting sun from directly above, it is possible to improve the irradiation efficiency of the leaf surface, which was conventionally shielded by oblique light.
Further, during the daytime when the sunlight is strong, the control unit 20 reciprocates between a state in which the reflector is leveled to completely block the sunlight and an appropriate angle of the reflector 1 based on the elevation angle of sunlight at an appropriate interval. By controlling the leaves, it is possible to secure a certain amount of sunlight on the leaf surface while preventing leaf burning.

The control unit 20 controls the inclination angle φ and the inclination angle θ to 0 ° so that all the solar panels 2 and all the reflectors 1 are horizontal at night and in strong winds. As a result, it is possible to prevent damage to the solar panel 2 and the reflector 1 and foreign matter from entering the farmland 3 due to sudden changes in the weather, and it is possible to prevent radiative cooling and frost in winter.

In the first embodiment, the first reflective surface 31 is made of stainless steel having a length of 60 cm and a width of 45 cm in a convex shape, but the present invention is not limited to this and can be changed as appropriate. For example, the first reflecting surface 31 may be flat or may have a spherical shape. By having a spherical shape, the sunrise and sunset when the solar sharing system 51 is arranged in the north and south can be efficiently reflected on the farmland 3. Further, stainless steel having a width of 120 cm to 180 cm may be used. Further, although the first reflecting surface 31 is made of stainless steel, it may be made of another metal or synthetic resin, or may be made of a mirror or glass.

Further, in the first embodiment, the solar panel row 5 in which the solar panels 2 are arranged in a row in the y direction and the reflector row 6 in which the reflectors 1 are arranged in a row in the y direction are alternately arranged in the x direction substantially orthogonal to each other. Although it is arranged, it is not necessarily limited to this and can be changed as appropriate. For example, the solar panel rows 5 and the reflector rows 6 may be arranged alternately in a direction having an angle of about 45 °, or may be arranged alternately in a direction having an angle of about 120 °. At least, the solar panel row 5 in which the solar panels 2 are arranged in a row and the reflector row 6 in which the reflectors 1 are arranged in a row may be arranged in parallel and alternately in a direction intersecting these rows.

Further, in the first embodiment, as shown in FIG. 1, the reflector 1 and the solar panel 2 are provided at the same height in the z direction, but the height is not necessarily limited to this and can be appropriately changed. For example, the height of the reflector 1 may be lower than the height of the solar panel 2. As a result, when the sunlight S is located near directly above, the reflector 1 can reflect the sunlight S without being in the shadow of the solar panel 2. Further, the height of the reflector 1 may be higher than the height of the solar panel 2. In this case, the solar panel 2 can be irradiated with the sunlight S reflected by the reflector 1. Further, the height of the reflector 1 and the solar panel 2 may be variably configured to be the height suitable for the farmland 3.

Further, in the first embodiment, all the reflectors 1 and all the solar panels 2 are configured to be driven in conjunction with each other, but the present invention is not limited to this and can be appropriately changed. For example, the reflector 1 and the solar panel 2 may be individually driven and controlled. As a result, the degree of daylighting can be changed depending on the type of plant cultivated on the farmland 3 (when cultivating a negative plant, the daylighting by the reflector 1 is controlled to be reduced). Further, all the solar panels 2 may be driven in conjunction with each other, and the reflector 1 may be controlled to be individually driven. Further, the solar panel 2 may be maintained at a horizontal or constant inclination angle φ, and only the reflector 1 may be configured to swing and drive the inclination angle change. As a result, power generation and daylighting can be realized with less energy when the solar sharing system 51 is arranged in the east-west direction.

Further, in the first embodiment, the solar panel driving unit 25 drives the solar panel 2 and the reflector driving unit 26 drives the reflecting plate 1, but the present invention is not necessarily limited to this and can be changed as appropriate. is there. For example, one drive unit may be configured to drive the solar panel 2 and the reflector 1. In this case, the reflector 1 may be driven while maintaining a relationship in which the inclination angle θ of the reflector 1 is 90 ° larger than the inclination angle φ of the solar panel 2.

As described above, in the first embodiment, the solar sharing system in the farmland
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
While generating solar power by a solar sharing system characterized in that the reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows. , It is possible to realize an inexpensive solar sharing system that enables sunlight to be collected over a wide area of farmland.

In addition, the control unit can change the inclination angle so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range, so that the entire farmland is evenly illuminated by sunlight. It can be possible.

Furthermore, it is a lighting method in the solar sharing system on farmland.
It is equipped with a solar panel row in which a plurality of solar panels are arranged in a row and a reflector row in which a plurality of reflectors are arranged in a row.
The reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows.
While performing solar power generation by the daylighting method in the solar sharing system, which is characterized in that the tilt angle is changed and controlled so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range. , It is possible to evenly collect sunlight over the entire farmland.

The second embodiment of the present invention is different from the first embodiment in that the second reflecting surface is provided on the back side of the first reflecting surface. The second embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram illustrating a reflector according to a second embodiment of the present invention. FIG. 6 is a side view illustrating the reflection of sunlight by the reflector in the second embodiment of the present invention.

As shown in FIG. 5, the reflector 101 in the second embodiment includes a second reflecting surface 32 on the back side of the first reflecting surface 31, and the second reflecting surface 32 emits light in a direction opposite to that of the first reflecting surface 31. It is configured to reflect. The second reflecting surface 32 is made of stainless steel like the first reflecting surface 31 and is attached to the support column 33 by bolts. Then, by driving (compressing or expanding) the drive rods 34 and 35, the support rods 33 can be used as a fulcrum to rotate, change the inclination angle θ, and swing. Further, in the second embodiment, the reflecting surface of the second reflecting surface 32 is configured so as to be a convex surface in a direction opposite to the convex surface direction of the first reflecting surface 31.

The solar sharing system 151 according to the second embodiment is mainly arranged so that the x direction faces the east direction. Then, the first reflecting surface 31 is arranged, for example, facing east, and the second reflecting surface 32 is arranged facing west. During the time when the morning sun hits from the east, the sunlight S is reflected on the first reflecting surface 31 and daylighted on the farmland 3, and during the time when the setting sun hits from the west, the sunlight S is reflected on the second reflecting surface 32. Daylight 3 on farmland 3. As a result, even if the solar sharing system 151 is arranged in the east and west, the sunlight S can be efficiently collected in the farmland 3.

In the second embodiment, the first reflecting surface 31 and the second reflecting surface are made of stainless steel, but the present invention is not limited to this and can be changed as appropriate. For example, it may be composed of another metal or synthetic resin, or it may be composed of a mirror or glass.

As described above, in the second embodiment, the reflector includes the first reflecting surface and the second reflecting surface provided on the back surface of the first reflecting surface, and the first reflecting surface and the second reflecting surface. Due to the convex shape, even when the solar sharing system is arranged in the east-west direction, sunlight can be efficiently collected on the farmland.

Example 3 of the present invention is different from Example 1 in that the reflector 1 and the solar panel 2 are arranged on the ceiling portion of the greenhouse. The third embodiment will be described with reference to FIG. 7. FIG. 7 is a side view illustrating the solar sharing system according to the third embodiment of the present invention.

As shown in FIG. 7, the solar sharing system 251 in the third embodiment is arranged so that the x direction is the south direction, and the reflector 1 and the solar panel 2 are arranged on the ceiling portion of the greenhouse 204. The ceiling of the greenhouse 204 is inclined to the south surface and the north surface, and the solar panel 2 is arranged on the south surface and the reflector 1 is arranged on the north surface. The reflector 1 is provided with a first reflective surface 31 having a convex shape, and sunlight S can be collected on the farmland 3 in the greenhouse.

Then, as in the first embodiment, the control unit swings the reflector 1 in a certain angle range and changes the inclination angle θ so as to track in conjunction with the elevation angle of the sun, thereby efficiently covering the entire farmland 3. It can be illuminated.

In the third embodiment, the solar panel 2 is arranged on the south surface and the reflector 1 is arranged on the north surface, but the present invention is not limited to this, and changes can be made as appropriate. For example, the solar panel 2 and the reflector 1 may be arranged substantially in parallel and alternately on the south surface. Further, the solar sharing system 251 may be arranged in the east-west direction, and the solar panel 2 and the reflector 1 may be arranged substantially in parallel and alternately on both the east side and the west side.

Example 4 of the present invention is different from Examples 1 to 3 in that a faucet for irrigation is provided on or around the farmland. The fourth embodiment will be described with reference to FIG. FIG. 9 is a diagram illustrating a solar sharing system according to a fourth embodiment of the present invention.

The solar sharing system 451 according to the fourth embodiment includes a irrigation faucet 460 near the ground on or around the farmland. A plurality of irrigation faucets 460 may be provided, or one faucet may be provided. Water is discharged from the irrigation faucet 460 toward the reflector 1 so that the water reflected by the water discharged toward the reflector 1 is irrigated toward the farmland 3. As a result, the plants in the farmland 3 can be irrigated in the sunny weather or at night.

When water is radiated from the irrigation faucet 460 to irrigate the plants of the farmland 3 through the reflector 1, it is desirable to swing the reflector 1 so that the entire farmland 3 can be irrigated.

Further, in the fourth embodiment, the irrigation faucet 460 is provided near the farmland or the ground around the farmland, but the present invention is not limited to this and can be appropriately changed. For example, the irrigation faucet may be provided above the farmland or around the farmland, for example, above the solar sharing system 451. As a result, the plants on the farmland 3 can be irrigated and the surface of the solar panel 2 can be washed.

Example 5 of the present invention is different from Examples 1 to 4 in that a light source is provided near the farmland or the ground around the farmland. The fifth embodiment will be described with reference to FIG. FIG. 10 is a diagram illustrating a solar sharing system according to a fifth embodiment of the present invention.

The solar sharing system 551 according to the fifth embodiment includes a light source 560 near the ground on or around the farmland. A plurality of light sources 560 may be provided, or one light source may be provided. The light source 560 comprises a red or yellow LED. Red or yellow light is emitted from the light source 560 toward the reflector 1, and the light reflected by the reflector 1 is applied to the plants on the farmland 3. Further, since the light source 560 is provided near the ground, it is possible to irradiate the back of the leaves of the plant with light. As a result, it can be used as a supplementary light for plant growth, and an insect repellent effect can be expected by using red or yellow light.

When irradiating light from the light source 560 and irradiating the plants on the farmland 3 through the reflector 1, the reflector 1 can be swung to control the entire farmland 3 so that the light can be irradiated. desirable.

Further, in the fifth embodiment, the red or yellow LED is used as the light source 560, but the present invention is not necessarily limited to this, and can be appropriately changed. An LED of any color may be used, or a lamp other than the LED may be used.

Example 6 of the present invention is different from Examples 1 to 5 in that it is provided with a monitoring device for monitoring the growth state of plants on the farmland.

In the sixth embodiment, a monitoring device for monitoring the growth state of the plant on the farmland 3 is provided, and the control unit adjusts the inclination angle θ of the reflector 1 based on the growth state of the plant monitored by the monitoring device. This makes it possible to increase the hours of sunshine in the slow-growing region.

The monitoring device may be a normal camera, an NDVI device (Normalized Difference Vegetation Index vegetation index measuring device), or a leaf color analysis device. Further, the position where the monitoring device is provided may be above the farmland 3, and may be attached to the upper part of the solar sharing system, for example.

Example 7 of the present invention is different from Examples 1 to 5 in that both the first-way solar sharing system and the second-way solar sharing system intersecting the first direction are provided in one farmland. .. The seventh embodiment will be described with reference to FIG. FIG. 11 is a side view illustrating the solar sharing system according to the seventh embodiment of the present invention.

The solar sharing system 651 according to the seventh embodiment is composed of a row of reflectors in which a plurality of reflectors 601 are arranged in a row facing south So (first direction) and a row of solar panels in which a plurality of solar panels 602 are arranged in a row. A plurality of first systems 610 are provided, and a row of reflectors in which a plurality of reflectors 611 are arranged in a row in the direction of east E west W (second direction orthogonal to the first direction) and a plurality of solar panels 612 are provided. A plurality of second systems 620 composed of a row of solar panels arranged in a row are provided.

As a result, in the morning and evening, the plurality of reflectors in the second system 620 swing along the movement of the sun to collect sunlight on the farmland 3, and in the daytime, the plurality of reflectors in the first system 610. It is possible to illuminate the farmland 3 by swinging around 601 along with the movement of the sun. Therefore, daylighting can be performed efficiently throughout the day.

The reflector 601 in the first system 610 and the reflector 611 in the second system 620 can be tilted or swung by any drive structure, but the reflector 601 and the reflector 611 in one drive structure. Can also be driven. For example, a control rod or the like for moving the drive rod of the reflector 601 in the first system 610 and the drive rod of the reflector 611 in the second system 620 may be provided and driven so as to be interlocked with each other.

Further, the inclination angle θ of the reflector 601 may be adjusted so that the sunlight is reflected by the reflector 601 of the first system 610 and the sunlight is inserted into the solar panel 602 of the first system 610 in the daytime. Similarly, in the morning and evening, the inclination angle θ of the reflector 611 may be adjusted so that the sunlight is reflected by the reflector 611 of the second system 620 and the sunlight is inserted into the solar panel 612 of the second system 620. As a result, the amount of power generated by the solar panel 602 and the solar panel 612 is improved.

Further, the prohibition inclination angle may be set in advance so that the reflector 601 in the first system 610 or the reflector 611 in the second system 620 does not reflect sunlight to a neighboring house. As a result, the solar sharing system can be operated so as not to inconvenience neighboring houses.

In the seventh embodiment, a plurality of reflectors 601 are arranged in a row in the south So direction (first direction), and a plurality of reflectors 611 are arranged in the east E west W direction (second direction orthogonal to the first direction). It is configured to be arranged in a row, but it is not necessarily limited to this and can be changed as appropriate. For example, in the case of the Southern Hemisphere, a plurality of reflectors 601 are arranged in a row in the north direction (first direction), and a plurality of reflectors 611 are arranged in a row in the east E west W direction (second direction orthogonal to the first direction). It may be configured to be arranged in. That is, the plurality of reflectors 601 may be arranged in a row in the first direction, and the plurality of reflectors 611 may be arranged in a row in the second direction orthogonal to the first direction.

Further, the first direction and the second direction do not have to be orthogonal to each other. The direction may be slightly shifted from the orthogonal direction according to the actual situation of the farmland. That is, the first direction and the second direction may be directions that intersect each other.

Further, in the seventh embodiment, a plurality of first systems and a plurality of second systems are provided, but the present invention is not necessarily limited to this, and changes can be made as appropriate. For example, only one or both of them may be provided.

As described above, in the seventh embodiment, the solar sharing system on the farmland
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
A first system in which the reflector row and the solar panel row are arranged substantially parallel to each other in the first direction and alternately in a direction intersecting the reflector row and the solar panel row.
It has a second system in which the reflector row and the solar panel row are arranged substantially in parallel in a second direction and alternately in a direction intersecting the reflector row and the solar panel row.
The solar sharing system, which is characterized in that the first direction and the second direction intersect each other, generate solar power in the morning and evening in addition to solar power in the daytime, and at low cost. It is possible to collect sunlight in a wide range.

In addition, since low-elevation sunlight in the first half of the morning and the second half of the afternoon can be irradiated from almost directly above the plants on the farmland, it is possible to improve the irradiation efficiency on the leaf surface, which has not been exposed to the sun due to the oblique light. Furthermore, it can be expected that the nitrate ion concentration will decrease when sunlight with a low altitude has a large amount of red color and is exposed to light having a high R / B ratio from above the leaf surface. Insect repellent effect can be expected by increasing the red color ratio.

The solar sharing system and the lighting method in the solar sharing system of the present invention can be widely used for farmland cultivated while generating electricity.

1: Reflector
2: Solar panel
3: Farmland
4: Yagra
5: Solar panel row
6: Reflector row
11: Reflector drive direction
20: Control unit
21: Power conditioner
22: Anemometer
24: Computer
25: Solar panel drive unit
26: Reflector drive unit
31: First reflective surface
32: Second reflective surface
33: Prop
34: Drive rod
35: Drive rod
36: Tiltmeter
51: Solar sharing system
101: Reflector
151: Solar sharing system
251: Solar sharing system
351: Solar sharing system
451: Solar sharing system
551: Solar sharing system
651: Solar sharing system
460: Faucet for irrigation
560: Light source
601: Reflector
602: Solar panel
610: First system
611: Reflector
612: Solar panel
620: Second system
S: Sunlight
θ: Tilt angle
φ: Tilt angle
ε: Swing angle
So: South
E: East
W: West

In order to solve the above problems, the present invention is a solar sharing system on farmland.
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
The reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows .
The control unit can change the inclination angle so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range.
It provides a solar sharing system characterized in that it is possible to irradiate sunlight with a low elevation angle from above the leaf surface .

With this configuration, the entire farmland can be evenly irradiated with sunlight.

An irrigation faucet may be provided on or around the farmland so that the water discharged and reflected toward the reflector can be irrigated on the farmland .
By providing the irrigation faucet near the ground, water can be discharged from the irrigation faucet to the reflector, and the water reflected by the reflector can be irrigated to the farmland.
Further, by providing the irrigation faucet on the upper part of the solar sharing system, the farmland can be irrigated and the solar panel can be washed.
In addition, since photosynthesis starts in the case of continuous sunshine or, for example, in the sunshine after dawn, it may be configured to irrigate before dawn. At that time, the entire farmland can be irrigated by controlling the angle of the reflector.

A light source may be provided near the farmland or the ground around the farmland , and the light may be irradiated toward the reflector so that the reflected light can irradiate the farmland .
With this configuration, the back of the leaf can also be irradiated with light, and the reflected light reflected from the light source on the swinging reflector can irradiate the entire farmland even at night. Insect repellent effect can be expected by using red or yellow light.

Equipped with monitoring equipment to monitor the growth of plants on the farmland
The control unit may be configured to adjust the inclination angle of the reflector based on the growth state of the plant monitored by the monitoring device to increase the sunshine duration to the growth delay region .
With this configuration, it is possible to increase the sunshine hours to the slow-growing region.

Further, in order to solve the above problems, the present invention is a solar sharing system on farmland.
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
A first system in which the reflector row and the solar panel row are arranged substantially parallel to each other in the first direction and alternately in a direction intersecting the reflector row and the solar panel row.
It has a second system in which the reflector row and the solar panel row are arranged substantially in parallel in a second direction and alternately in a direction intersecting the reflector row and the solar panel row.
The first direction and the second direction are directions that intersect with each other.
The control unit can change the inclination angle so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range.
It provides a solar sharing system characterized in that it is possible to irradiate sunlight with a low elevation angle from above the leaf surface .
With this configuration, it is possible to inexpensively collect sunlight over a wide area of farmland while performing morning and evening solar power generation in addition to daytime solar power generation.

Further, in order to solve the above problems, the present invention is a lighting method in a solar sharing system on farmland.
It is equipped with a solar panel row in which a plurality of solar panels are arranged in a row and a reflector row in which a plurality of reflectors are arranged in a row.
The reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows.
While swinging the reflector in a certain angle range, the inclination angle is changed and controlled so as to track in conjunction with the elevation angle of the sun .
It provides a daylighting method in a solar sharing system characterized in that it is possible to irradiate sunlight with a low elevation angle from above the leaf surface .

Claims (10)

A solar sharing system on farmland
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
A solar sharing system characterized in that the reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows. The solar sharing according to claim 1, wherein the control unit can change the inclination angle so as to track the reflector in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range. system. The reflector includes a first reflecting surface and a second reflecting surface provided on the back surface of the first reflecting surface, and the first reflecting surface and the second reflecting surface have a convex shape. The solar sharing system according to claim 1 or 2. When the inclination angle of the solar panel and the reflector is 0 °, the solar panel and the reflector are horizontal, and the angle of inclination to the sky side is positive.
The solar sharing system according to any one of claims 1 to 3, wherein the control unit controls the inclination angle of the solar panel so as to be 90 ° smaller than the inclination angle of the reflector. The solar sharing system according to claim 4, wherein the control unit controls each inclination angle to 0 ° so that the solar panel and the reflector are horizontal at night and in strong winds. The solar sharing system according to any one of claims 1 to 5, wherein a faucet for irrigation is provided on or around the farmland. The solar sharing system according to any one of claims 1 to 6, wherein a light source is provided near the farmland or the ground around the farmland. Equipped with monitoring equipment to monitor the growth of plants on the farmland
The solar sharing system according to any one of claims 1 to 7, wherein the control unit adjusts the inclination angle of the reflector based on the growth state of the plant monitored by the monitoring device. A solar sharing system on farmland
A row of solar panels with multiple solar panels lined up in a row,
A row of reflectors with multiple reflectors lined up in a row,
A control unit capable of adjusting the inclination angles of the plurality of reflectors is provided.
A first system in which the reflector row and the solar panel row are arranged substantially parallel to each other in the first direction and alternately in a direction intersecting the reflector row and the solar panel row.
It has a second system in which the reflector row and the solar panel row are arranged substantially in parallel in a second direction and alternately in a direction intersecting the reflector row and the solar panel row.
A solar sharing system characterized in that the first direction and the second direction intersect each other. It is a daylighting method in the solar sharing system on farmland.
It is equipped with a solar panel row in which a plurality of solar panels are arranged in a row and a reflector row in which a plurality of reflectors are arranged in a row.
The reflector rows and the solar panel rows are arranged substantially in parallel and alternately in a direction intersecting the reflector rows and the solar panel rows.
A lighting method in a solar sharing system, characterized in that the tilt angle is changed and controlled so as to track in conjunction with the elevation angle of the sun while swinging the reflector in a certain angle range.

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