KR101077079B1 - Apparatus of sensing light and method of sensing location of light source using the same - Google Patents

Abstract

The light sensing device is arranged in different directions to detect the light of the light source, the first to fourth light sensors, the light amount sensor to measure the light quantity of the light source, and the first to fourth light sensors corresponding to the detected light. It includes a control unit for determining the position of the light source using the output signals. The first and second photosensors are arranged side by side in the first direction, and the third and fourth photosensors are arranged side by side in a second direction perpendicular to the first direction. As a result, the control unit may determine the position of the light source based on the first direction using the sensing signals output from the first and second optical sensors, and the sensing signal output from the third and fourth optical sensors. The position of the light source may be determined based on the second direction using.

Description

Optical sensing device and method for detecting position of light source using the same {APPARATUS OF SENSING LIGHT AND METHOD OF SENSING LOCATION OF LIGHT SOURCE USING THE SAME}

The present invention relates to a light sensing device for tracking light, and more particularly, to a light tracking device for tracking light used in the solar cell module to track the position of the sun.

Recently, research is being conducted on equipment that generates alternative energy that replaces fossil fuels and does not cause environmental pollution. For example, research on a device for generating alternative energy using solar light, wind power, and tidal power is being progressed, and among them, research on a device for generating electric energy using solar light is being actively conducted.

An apparatus for converting sunlight into electrical energy includes a solar cell module having solar cells. In general, the amount of electrical energy generated by solar cells is proportional to the amount of sunlight and the intensity of sunlight. Therefore, if the solar cell module is moved so as to always face the sun whose position changes with time, it is possible to improve the magnitude of the electric energy generated from the solar cell module within the same time.

An object of the present invention is to provide a light sensing device that can be used to track a light source by generating a sensing signal corresponding to the position of the light source.

In addition, another object of the present invention to provide a method for detecting the position of the light source using the light sensing device.

In order to achieve the above object of the present invention, an optical sensing device according to the present invention includes a first optical sensor for detecting light emitted from a light source and a light disposed in a direction different from that of the first optical sensor and irradiated from the light source. A second optical sensor for detecting light, a third optical sensor disposed toward a different direction from the first and second optical sensors, and detecting a light emitted from the light source, and a different direction from the first to third optical sensors A control unit configured to determine a position of the light source using a fourth optical sensor disposed to face the light sensor for sensing light emitted from the light source, and signals output from the first to fourth light sensors in response to the detected light; It includes.

Method for detecting the position of the light source according to the present invention for achieving the above object of the present invention is as follows. Detecting light irradiated from the light source using a plurality of light sensors, and determining a position of the light source using signals output from the light sensors. .

According to the present invention, the light-tracking light sensing device can determine the position of the light source using the sensing signals changed according to the position of the light source. When the light sensing device is provided in a solar cell module for converting solar energy into electrical energy, the solar cell module can be positioned so that the solar cells always face the light source using the light sensing device. It is possible to improve the magnitude of the electrical energy generated from.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features and effects of the present invention described above will be readily understood through embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be applied and modified in various forms. Rather, the following embodiments are provided to clarify the technical spirit disclosed by the present invention, and furthermore, to fully convey the technical spirit of the present invention to those skilled in the art having an average knowledge in the field to which the present invention belongs. Therefore, the scope of the present invention should not be construed as limited by the embodiments described below. On the other hand, the drawings presented in conjunction with the following examples are somewhat simplified or exaggerated for clarity, the same reference numerals in the drawings represent the same components.

1 is a perspective view of an optical sensing device according to an exemplary embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating a portion cut along the line I-I of FIG. 1.

1 and 2, the light sensing device 100 includes a base unit 10, first to fourth light sensing units 20, 30, 40, and 50, a light quantity sensing unit 60, and a main cover. And (15).

The base part 10 has a flat plate shape, and the first to fourth light sensing parts 20, 30, 40, and 50 and the light amount sensing part 60 are provided on the base part 10. In addition, the base portion 10 has a lead wire outlet 11 formed partially removed. Accordingly, lead wires electrically connected to the first to fourth light sensing units 20, 30, 40, and 50 and the light amount sensing units 60 may be controlled through the lead wire outlet 11. 70) can be electrically connected.

Each of the first to fourth light sensing units 20, 30, 40, and 50 includes a light sensor for sensing sunlight and a housing for receiving the light sensor. For example, the first light sensing unit 20 includes a first optical sensor 24 for sensing sunlight and a first housing 22 for receiving the first optical sensor 24.

The structure of the first light sensing unit 20 will be described in more detail. In addition to the first optical sensor 24 and the first housing 22, the first light sensing unit 20 may include a first support unit ( 21, a first optical sensor cover 23, first coupling members 25, and a first lead wire 27.

The first optical sensor 24 detects illuminance of sunlight and outputs a sensing signal according to the sensed illuminance of the light. The first optical sensor 24 may be an illuminance sensor such as Cds. The first housing 22 has a cylindrical shape to accommodate the first optical sensor 24 therein. The first housing 22 is formed of a material that blocks sunlight.

In addition, the first housing 22 has an open shape, and the first housing 22 is covered by the first optical sensor cover 23. The first optical sensor cover 23 may include a material that transmits light such as acrylic resin and glass, and the first optical sensor cover 23 may be formed by the first coupling members 25. And (22).

On the other hand, as described above, the first housing 22 blocks the sunlight, while the first optical sensor cover 23 transmits the sunlight, thus, the first light sensing unit 20 ) Detects sunlight that passes through the first optical sensor cover 23 and is irradiated toward the first optical sensor 24.

In an embodiment of the present invention, a portion of the first optical sensor cover 23 and the first housing 22 coupled by the first coupling member 25 may be sealed using a material such as silicon. . As a result, the first optical sensor 24 may be protected from external moisture to improve reliability associated with driving of the first optical sensor 24.

In addition, in the embodiment of the present invention, the first optical sensor cover 23 may be coated with a sunscreen (not shown). As a result, the ultraviolet rays irradiated to the first optical sensor 24 side are blocked by the sunscreen, thereby preventing the first optical sensor 24 from failing due to ultraviolet rays and reducing reliability.

The first support part 21 is coupled to the first housing 22 to fix the first housing 22 to the base part 10. More specifically, the first support 21 has a bent shape, a part of the first support 21 is parallel to the base 10, the other portion of the first support 21 It is inclined with respect to the base portion 10. As a result, the first light sensing unit 20 coupled with the bent portion of the support unit 21 is also inclined with respect to the base unit 10. In an embodiment of the present invention, the bent portion of the first support portion 21 and the first angle θ1 formed with the base portion 10 may be approximately 45 degrees.

The first lead wire 27 is electrically connected to the first optical sensor 24. Therefore, the sensing signal generated by sensing the sunlight from the first optical sensor 24 may be output to the outside through the first lead wire 27. The first lead wire 27 may be electrically connected to a control unit 70 of FIG. 5, and the sensing signal may be provided to the control unit side.

The second light sensing unit 30 has a structure corresponding to the first light sensing unit 20 and has components corresponding to the first light sensing unit 20. In more detail, the second light sensing unit 30 may include a second support 31, a second housing 32, a second optical sensor cover 33, a second optical sensor 34, and a second coupling member. Field 35 and a second lead wire 27.

In the light sensing device 100, the second light sensing unit 30 is disposed at a position facing the first light sensing unit 20. In more detail, the second light sensing unit 30 on the base unit 10 is disposed side by side in the first direction D1 together with the first light sensing unit 20 so as to form the first light sensing unit. Facing (20).

In addition, in the cross section, the first light sensing unit 20 and the second light sensing unit 30 are inclined in different directions with respect to the base unit 10. More specifically, as described above, when the first angle θ1 formed by the bent portion of the first support portion 21 counterclockwise from the base portion 10 is 45 degrees, the base The second angle θ2 formed by the bent portion of the second support portion 31 clockwise from the portion 10 is 45 degrees.

On the other hand, each of the third light sensing unit 40 and the fourth light sensing unit 50 has a structure that is structurally corresponding to the first first light sensing unit 30, the first light sensing unit And components corresponding to 20. Therefore, detailed descriptions of the components of each of the third light sensing unit 40 and the fourth light sensing unit 50 are omitted.

In the light sensing device 100, the third light sensing unit 40 and the fourth light sensing unit 50 are in a second direction D2 perpendicular to the first direction D1 on the base unit 10. ) Arranged side by side, and the third light sensing unit 40 and the fourth light sensing unit 50 face each other. In addition, in the cross section, the third light sensing unit 40 and the fourth light sensing unit 50 are inclined in different directions with respect to the base unit 10.

The light amount sensing unit 60 is located on the center portion of the base portion 10 and senses the light amount of sunlight provided from the outside. The light amount sensing unit 60 includes a support 61, a support plate 62, a light amount sensor 63, and a third lead wire 64. The support 61 extends in a direction perpendicular to the base portion 10 and is coupled to the base portion 10. In addition, the support plate 62 has a plate shape and is coupled to the upper portion of the support 61, and the light amount sensor 63 is provided on the support plate 62 to measure the amount of sunlight.

The third lead wire 64 is electrically connected to the light amount sensor 63. The third lead wire 64 is electrically connected to the control unit 70 of FIG. 5 through the lead wire outlet 11. Therefore, the sensing signal generated in response to the light amount of sunlight from the light amount sensor 63 may be provided to the control unit through the third lead wire 64.

The control unit may receive a sensing signal corresponding to the amount of sunlight from the light amount sensor 63 to determine whether the first to fourth light sensing units 20, 30, 40, and 50 operate. . A more detailed description thereof will be given with reference to FIG. 5.

The main cover 15 has a hemispherical shape to cover the first to fourth light sensing units 20, 30, 40, and 50 and the light amount sensing unit 60. The main cover 15 includes a light transmitting material, such as acrylic resin and glass, to transmit solar light provided from the outside, and the first to fourth light sensing units 20 and 30 from an external environment. And 40 and 50 to protect the light amount sensing unit 60.

In addition, in the embodiment of the present invention, the outer surface of the main cover 15 may be provided with a coating layer 16. The coating layer 16 blocks ultraviolet rays to prevent the sensors of the optical sensing device 100 from malfunctioning or deteriorating the sensing function by the ultraviolet rays.

3A and 3B are enlarged views of the first light sensing unit and the second light sensing unit in the case where sunlight is incident perpendicularly to the ground surface side. Referring to FIGS. 3A and 3B, it is assumed that the base part 10 is incident to the base part 10 vertically with the sunlight incident on the surface of the base part in parallel to the ground surface.

Referring to FIG. 3A, the upper end of the first housing 22 is partially removed to form the first inclined surface 28. An angle formed by the first inclined surface 28 and the bottom surface 22 ′ of the first housing 22 is a first angle θ1, and in the embodiment of the present invention, the first angle θ1 is 45 degrees.

 When the sunlight that is incident vertically to the ground surface side is defined as the first sunlight L1, the first inclined surface 28 is parallel to the first sunlight L1. In addition, since the base portion 10 has a flat plate shape, and the bent portion of the first support portion 21 forms a first angle θ1 with the base portion 10, The first optical sensor 24 accommodated in the first housing 22 provided on the bent portion is inclined at the first angle θ1 with respect to the base portion 10. As a result, the direction of the first sunlight L1 and the angle formed by the first incident surface 24 ′ of the first optical sensor 24 are the same as the first angle θ1.

Meanwhile, as described above with reference to FIGS. 1 and 2, the first angle θ1 formed by the bent portions of the base portion 10 and the first support portion 21 as in the embodiment of the present invention. Is 45 degrees, the angle formed by the direction of the first sunlight L1 and the first incident surface 24 'is also 45 degrees.

When the first sunlight L1 is irradiated to the first light sensing unit 20 side, the first sunlight L1 is directly irradiated to half of the first light sensor 24. More specifically, the first optical sensor 24 has a first light sensing area SA1 for sensing light emitted from the outside, and the first sunlight L1 in the first light sensing area SA1. ) Is defined as a first light receiving area RA1, and an area shadowed by the first housing 22 in the first light sensing area SA1 is defined as a first shadow area PA1. In this case, the ratio of the first light receiving area RA1 and the first shadow area PA1 is approximately 50% in the first light sensing area SA1.

As described above, when the first sunlight L1 is provided toward the first light sensing unit 20, the first light receiving region RA1 and the first shadow in the first light receiving region RA1. The first optical sensor 24 corresponding to the ratio occupied by the area PA1 generates a sensing signal, and the sensing signal is provided to the control unit 70 of FIG. 5 through the first lead wire 27 of FIG. 2. do.

Referring to FIG. 3B, the upper end of the second housing 32 is partially removed to form the second inclined surface 38. The angle formed by the second inclined surface 38 and the bottom surface 32 ′ of the second housing 32 is a second angle θ2, and in the embodiment of the present invention, the second angle θ2 is 45 degrees.

 The second inclined surface 38 is parallel to the first sunlight L1 incident vertically to the ground surface side, similarly to the first inclined surface (28 in FIG. 3A). The base portion 10 has a flat plate shape, and the bent portion of the second support portion 31 forms the second angle θ2 with the base portion 10, and thus the bent portion of the second support portion 31 is bent. The second optical sensor 34 accommodated in the second housing 32 provided above the portion is inclined at the second angle θ2 with respect to the base portion 10. As a result, the angle formed by the direction of the first sunlight L1 and the second incident surface 34 ′ of the second optical sensor 34 is the same as the second angle θ2.

Meanwhile, as described above with reference to FIGS. 1 and 2, the second angle θ2 formed by the bent portions of the base portion 10 and the second support portion 31 as in the embodiment of the present invention. Is 45 degrees, the angle formed by the direction of the first sunlight L1 and the second incident surface 34 'is also 45 degrees.

When the first sunlight L1 is irradiated to the second light sensing unit 30 side, the first sunlight L1 is directly irradiated to the half side of the second light sensor 34. More specifically, the second optical sensor 34 has a second light sensing area SA2 for sensing light emitted from the outside, and the first sunlight L1 in the second light sensing area SA2. ) Is defined as a second light receiving area RA2, and an area shadowed by the second housing 32 in the second light sensing area SA2 is defined as a second shadow area PA2. In this case, the ratio of each of the second light receiving area RA2 and the second shadow area PA2 in the second light sensing area SA2 is approximately 50%.

As described above, when the first sunlight L1 is provided toward the second light sensing unit 30, the second light receiving region RA2 and the second shadow in the second light receiving region RA2. The second optical sensor 34 corresponding to the ratio occupied by the area PA2 generates a sensing signal, and the sensing signal is provided to the control unit 70 of FIG. 5 through the second lead wire 37 of FIG. 2. do.

4A and 4B are enlarged views of the first light sensing unit and the second light sensing unit in the case where sunlight is incident on the ground surface side.

Referring to FIG. 4A, when the sunlight incident on the ground surface is inclined at a predetermined angle and is defined as the second sunlight L2, the traveling direction of the second sunlight L2 and the first sunlight incident perpendicularly to the ground surface side are defined. The angle formed by the advancing direction of L1 coincides with the predetermined angle.

When the second sunlight L2 is irradiated to the first light sensing unit 20 side, the first sunlight L1 is irradiated to the first light sensing unit 20 side, than the first case. More sunlight is obscured by the housing 22. As a result, the first light receiving area SA1 is reduced and the first shadow area PA1 is increased. That is, when the second sunlight L2 is irradiated toward the first light sensing unit 20, the ratio of the first light receiving area SA1 to the first light sensing area SA1 is 50%. It becomes smaller, and the ratio of the first shadow area SA1 to the first light sensing area SA1 is greater than 50%.

Referring to FIG. 4B, when the second sunlight L2 is irradiated to the second light sensing unit 30, the first sunlight L1 is irradiated to the first light sensing unit 20. Furthermore, less sunlight is obscured by the second housing 32, as a result, the second light receiving area SA2 increases and the second shadow area PA2 decreases. That is, when the second sunlight L2 is irradiated toward the second light sensing unit 30, the ratio of the second light receiving area SA2 to the second light sensing area SA2 is 50%. In this case, the ratio of the second shadow area SA2 to the second light sensing area SA2 is smaller than 50%.

As described with reference to FIGS. 4A and 4B, when sunlight is provided to be inclined to the ground surface toward the first and second light sensing units 20 and 30, the first light is sensed according to the direction in which the sunlight travels. In each of the wide area SA1 and the second light sensing area SA2, the area where the sunlight is directly irradiated and the area where the shadow is cast are changed. As a result, each of the first optical sensor 24 and the second optical sensor 34 outputs sensing signals corresponding to an area in which sunlight is directly irradiated and a shadowed area, and the sensing signals are controlled by the control unit (Fig. 5 to 70) side, the control unit can be used to determine the position of sunlight.

That is, as shown in FIGS. 4A and 4B, when the advancing direction of the second solar light L2 is inclined by a predetermined angle clockwise from a direction perpendicular to the ground surface, the control unit is configured to provide the first optical sensor 24. ) And the sensing signals output from the second optical sensor 34 may determine that the sun is inclined at a predetermined angle clockwise from a direction perpendicular to the ground surface.

Since the first light sensing unit 20 and the second light sensing unit 30 are arranged side by side in a first direction (D1 of FIG. 1), the control unit may include the first and second light sensors 24. The position of the sun with respect to the first direction may be determined by using the sensing signals output from (34). In more detail, the control unit may determine how inclined the sun is from the direction perpendicular to the first direction using the sensing signals.

Meanwhile, referring back to FIGS. 1, 3A, and 3B, when the first solar light L1 traveling perpendicular to the ground surface is provided toward the light sensing device 100, the first light sensing unit 20 is provided. ) And the third light sensing unit 40 disposed side by side in the second direction D2, similarly to the position of the sun in the first direction D1 using the second light sensing unit 30. ) And the fourth light sensing unit 50 to determine the position of the sun in the second direction (D2).

FIG. 5 is a block diagram illustrating a method of driving the light sensing device for light tracking shown in FIG. 1.

Referring to FIG. 5, a sensing signal corresponding to a light amount of sunlight is generated from the light amount sensing unit 60 and provided to the control unit 70. In addition, sensing signals corresponding to the position of the sun are generated from the first to fourth light quantity sensing units 20, 30, 40, and 50 and provided to the control unit 70.

The control unit 70 determines the position of sunlight by using the sensing signals provided from the first to fourth sensing units 20, 30, 40, and 50. Meanwhile, the control unit 70 starts the operation of determining the position of the sunlight when the amount of light of the sunlight measured by the light quantity sensing unit 60 is equal to or greater than a preset value. For example, when there is a large amount of sunlight, such as during the day, the control unit 70 starts the operation of determining the position of sunlight.

On the contrary, when the amount of sunlight is greater than the preset value, the control unit 70 may stop the operation of determining the position of the sunlight. For example, when the amount of sunlight is low, such as at night, the control unit 70 may stop the operation of determining the position of the sunlight.

The light sensing device 100 according to the embodiment of the present invention may be provided in a solar cell module including solar cells converting solar energy into electrical energy and a driving device for changing positions of the solar cells. When the light sensing device 100 is provided in the solar cell module, the light sensing device 100 measures the amount of light of the sun, and when the measured amount of light of the sun is greater than a preset value, the position of the sun Can be used to determine. The position information of the sun generated by the light sensing device 100 may be used to generate a control signal for driving the driving device so that the solar cells face the position of the sun. In the solar cell module having the above components, since the solar cells are always positioned toward the sun by the light sensing device 100, the size of the electric energy generated using the solar energy may be increased. A more detailed description thereof will be described with reference to FIG. 6.

The control unit 70 determines whether to operate the first to fourth light sensing units 20, 30, 40, and 50 using the sensing signal provided from the light quantity sensing unit 60. For example, when the amount of sunlight light is less than a predetermined value, the control unit 70 is the first to fourth light sensing unit (20, 30, 40, 50) toward the first to fourth light sensing unit (20). A stop command control signal for stopping the operation of 20, 30, 40, and 50 is transmitted. When the control unit 70 transmits the stop command control signal, it may be a case where the amount of sunlight is small, such as at night.

6 is a view showing a solar cell module having the light sensing device shown in FIG.

Referring to FIG. 6, the solar cell module 300 is fixed to the ground surface 320 to receive light 311 from the sun 310 to generate electrical energy. The solar cell module 300 includes an optical sensing device 100, a solar panel 200, a main body 210, a driver 220, a support 240, and a support plate 250.

The solar panel 200 includes a plurality of solar cells for converting light into electrical energy. The light sensing device 100 is provided on the solar panel 200, and as described above with reference to FIGS. 1 to 5, the position of the sun 310 is detected in real time. The base portion (10 in FIG. 2) of the light sensing device 100 is parallel to the solar panel 200, and as a result, the sunlight 310 incident vertically toward the base portion is the solar panel 200. It also enters vertically to the side.

The main body 210 includes a control unit (70 of FIG. 5) that receives the sensing signals output from the light sensing device 100 and determines the position of the sun 310. In addition, the main body 210 is a power supply for providing a direct current power to the light sensing device 100 and the driving unit 220 in addition to the control unit, and the direct current power generated from the solar panel 200 to the AC path It may further include an inverter for switching.

The support plate 250 is fixed to the ground surface 320, and the support 240 is fixed to the support plate 250 and connected to the main body 210. The driving unit 220 is connected to the solar panel 200 to change the position of the solar panel 200 corresponding to the position of the sun 310. More specifically, the first to fourth light sensing units 20 and 30 when the light amount of the sunlight 311 is greater than or equal to a preset value by the light quantity sensing unit (60 in FIG. 1) of the light sensing device 100. After the position of the sun 310 is determined by the 40, 50, and the control unit (70 of FIG. 5), the control unit is configured such that the sunlight 311 is incident vertically toward the solar panel 200. The driving signal is provided to the driving unit 220. As a result, the solar panel 200 is moved such that the solar light 310 is incident perpendicularly to the solar panel 200 by the driving signal.

For example, when moving in the third direction D3 of the sun 310, the light sensing device 100 detects that the position of the sun 310 is changed and the solar panel is moved toward the driving unit 220. It provides a drive signal for moving the 200. As a result, in response to the position of the sun 310 being changed in the third direction D3, the left end of the solar panel 200 moves upward, and the right end of the solar panel 200 moves downward. The solar panel 200 faces the sun 310. As a result, even if the position of the sun 310 is changed, the solar panel 200 can always receive the light incident vertically from the sun 310, so that the solar energy of the electrical energy generated from the solar cell module 300 Increases in size

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. You will understand.

1 is a perspective view of a light sensing device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a portion taken along line II ′ of FIG. 1.

3A and 3B are enlarged views of the first light sensing unit and the second light sensing unit in the case where sunlight is incident perpendicularly to the ground surface side.

4A and 4B are enlarged views of the first light sensing unit and the second light sensing unit in the case where sunlight is incident on the ground surface side.

FIG. 5 is a block diagram illustrating a method of driving the light tracking device for detecting light shown in FIG. 1.

6 is a view showing a solar cell module having the light sensing device shown in FIG.

* Description of the symbols for the main parts of the drawings *

10-Base 15-Main Cover

20-first light-sensing part 21-first support part

22-1st housing 23-1st optical sensor cover

24-First optical sensor 25-First coupling members

27-1st lead wire 30-2nd light sensing unit

40-third light sensing unit 50-fourth light sensing unit

60-Light sensor 63-Light sensor

100-light sensing device

Claims (17)

delete delete A first optical sensor for sensing light emitted from the light source; A second optical sensor disposed in a direction different from the first optical sensor and sensing light emitted from the light source; A third optical sensor disposed in a direction different from the first and second optical sensors to sense light emitted from the light source; A fourth optical sensor disposed in a direction different from the first to third optical sensors to sense light emitted from the light source; Light amount sensor for detecting the amount of light irradiated from the light source; And It includes a control unit for determining the position of the light source using the signals output from the first to fourth optical sensors in response to the detected light, The control unit may determine the position of the light source using signals output from the first to fourth light sensors only when the light amount of the light source measured by the light amount sensor is equal to or greater than a preset value. Sensing device. 4. The optical sensor of claim 3, wherein the first and second optical sensors are arranged side by side in a first direction, and the third and fourth optical sensors are arranged in a second direction perpendicular to the first direction. Light sensing device, characterized in that arranged side by side. The apparatus of claim 4, wherein the control unit determines the position of the light source in the first direction by using signals output from the first and second light sensors, and wherein the control unit is configured to determine the third and fourth positions. And determining the position of the light source with respect to the second direction by using signals output from the light sensors. A first optical sensor for sensing light emitted from the light source; A second optical sensor disposed in a direction different from the first optical sensor and sensing light emitted from the light source; A third optical sensor disposed in a direction different from the first and second optical sensors to sense light emitted from the light source; A fourth optical sensor disposed in a direction different from the first to third optical sensors to sense light emitted from the light source; A control unit that determines a position of the light source using signals output from the first to fourth optical sensors in response to the detected light; Light amount sensor for detecting the amount of light irradiated from the light source; A base portion; A first housing provided on the base and having an upper end opened to receive the first optical sensor; A first optical sensor cover which transmits light and covers the first optical sensor; A second housing provided on the base and having an upper end opened to receive the second optical sensor; A second optical sensor cover which transmits light and covers the second optical sensor; A third housing provided on the base and having an upper end opened to receive the third optical sensor; A third optical sensor cover that transmits light and covers the third optical sensor; A fourth housing provided on the base and having an upper end opened to receive the fourth optical sensor; A fourth optical sensor cover which transmits light and covers the fourth optical sensor; Support parts coupled one-to-one with the first to fourth housings to support the first to fourth housings on the base part; And And a main cover coupled to the base to cover the first to fourth optical sensors and the light quantity sensor. The optical sensing device of claim 6, wherein each of the support parts has a shape bent to be inclined with the base part, and the first to fourth housings are coupled to the bent portions of the support parts. The method of claim 7, wherein the base portion has a flat plate shape, the bent portion of each of the support portions are inclined at an angle of 45 degrees with respect to the base portion, the light incident vertically toward the base portion is the first to An optical sensing device, characterized in that incident at a 45 degree angle with respect to the incident surface of each of the fourth optical sensors. The method of claim 6, wherein the main cover, And a coating layer provided on the surface of the main cover to block ultraviolet rays. The method of claim 6, wherein each of the first to fourth optical sensor covers, And a coating layer provided on the surface of each of the first to fourth optical sensor covers to block ultraviolet rays. 7. The light emitting device of claim 6, wherein each of the first to fourth optical sensors has a light sensing area for sensing light provided from the light source, and the light is irradiated vertically from the light sensing area to the base part. The ratio of the occupancy is the same as the ratio of the area shadowed by any one of the first to fourth housings in the light sensing region. The light sensing device of claim 11, wherein an inclined surface is provided at an upper end of each of the first to fourth housings, and the inclined surface is parallel to a traveling direction of light traveling vertically toward the base. The optical sensing device of claim 12, wherein an angle formed by the bottom surface of each of the first to fourth housings and the inclined surface is 45 degrees. A first optical sensor for sensing light emitted from the light source; A second optical sensor disposed in a direction different from the first optical sensor and sensing light emitted from the light source; A third optical sensor disposed in a direction different from the first and second optical sensors to sense light emitted from the light source; A fourth optical sensor disposed in a direction different from the first to third optical sensors to sense light emitted from the light source; And It includes a control unit for determining the position of the light source using the signals output from the first to fourth optical sensors in response to the detected light, And the first to fourth optical sensors are illuminance sensors. delete Sensing an amount of light emitted from a light source using a light amount sensor; Sensing light emitted from a light source using a plurality of light sensors; And Determining the position of the light source using the signals output from the photosensors; Determining the position of the light source And determining the position of the light source only when the amount of light detected by the light quantity sensor is greater than or equal to a preset value. The method of claim 16, wherein the determining of the position of the light source comprises: Determining the position of the light source with respect to the first direction by comparing signals output from the sensors arranged in parallel in a first direction among the plurality of optical sensors; And Comparing the signals output from the sensors arranged side by side in a second direction perpendicular to the first direction among the plurality of optical sensors to determine the position of the light source in the second direction. Characterized in that the position of the light source.

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