KR102682495B1 - Solar tracker to ensure consistent quality of measurement of seawater optical properties - Google Patents

Abstract

According to one embodiment, the solar tracker includes: a driving unit formed long in a direction perpendicular to the ground; a rotating part installed above the driving unit and capable of being rotated by the driving unit; and a sensing unit installed on the rotating unit to rotate together with the rotating unit and measuring marine information, wherein the rotating unit includes: a base frame rotatably connected to the upper side of the driving unit; a vertical frame extending in a direction perpendicular to the base frame; and a horizontal frame connected to an upper side of the vertical frame in a direction horizontal to the base frame, wherein the sensing unit includes: an atmospheric radiation intensity sensor installed on one side of the vertical frame; And it may include a sea level radiation intensity sensor installed on the other side of the vertical frame located opposite to the atmospheric radiation intensity sensor.

Description

Solar tracker to ensure consistent quality of seawater optical property measurements {SOLAR TRACKER TO ENSURE CONSISTENT QUALITY OF MEASUREMENT OF SEAWATER OPTICAL PROPERTIES}

The explanation below is about a solar tracker to ensure consistent quality in measuring seawater optical properties, and is about a device for use when operating a fixed seawater light observation system.

When installing and operating an optical sensor on a fixed marine platform such as a marine science base to continuously collect information on the optical characteristics of seawater in waters under Korea's jurisdiction, the optical sensor faces the sun at certain times depending on the movement of the sun. Cases arise. When the sun and the optical sensor are facing each other, the incident amount is so strong that the optical sensor cannot make observations, or even if observations are made, the quality of the optical sensor observation data is very low due to diffuse reflection by the sun.

In the case of application to the marine science station, it was confirmed that the distribution of the spectrum by wavelength showed a unique result of divergence in the observation at the time when the azimuth angle with the sun decreased to 90° or less depending on the location where the sensor was installed. This led to GOCI-Ⅱ and A situation occurred in which observational data from a specific time were excluded from data selection for quality verification.

To improve this, we plan to develop and apply a separate device that automatically rotates the optical sensor according to the movement of the sun, and maintains the relative azimuth between the optical sensor and the sun within 90 to 135 degrees to ensure the quality of the optical sensor. I want to do it.

There is also a drone-type water quality detection device as disclosed in Korean Patent No. 10-2048796, which is a device equipped with an optical tracking module that measures the real-time position of the sun. However, this technology allows the angle of observation to be adjusted by adjusting the position of the drone. Although it can be changed materially, there are parts that are difficult to apply to fixed devices.

Korean Patent No. 10-2048796

The purpose of one embodiment is to provide a solar tracker that can maintain high quality observations by changing the measurement angle of the sensor to remain constant depending on the sun.

According to one embodiment, the solar tracker includes: a driving unit formed long in a direction perpendicular to the ground; a rotating part installed above the driving unit and capable of being rotated by the driving unit; and a sensing unit installed on the rotating unit to rotate together with the rotating unit and measuring marine information, wherein the rotating unit includes: a base frame rotatably connected to the upper side of the driving unit; a vertical frame extending in a direction perpendicular to the base frame; and a horizontal frame connected to an upper side of the vertical frame in a direction horizontal to the base frame, wherein the sensing unit includes: an atmospheric radiation intensity sensor installed on one side of the vertical frame; And it may include a sea level radiation intensity sensor installed on the other side of the vertical frame located opposite to the atmospheric radiation intensity sensor.

According to one embodiment, when viewed in a first direction horizontal to the ground, the atmospheric radiation intensity sensor, the vertical frame, and the sea level radiation intensity sensor have portions that overlap each other, and the atmospheric radiation intensity sensor and the sea level radiation intensity sensor The radiation intensity sensors are mutually arranged in an “X-shaped” shape, and when viewed from a second direction horizontal to the ground and perpendicular to the first direction, the atmospheric radiation intensity sensor, the vertical frame, and the sea surface radiation intensity sensor do not have mutually overlapping portions, and at least one ventilation hole through which air can circulate may be formed on a side of the vertical frame visible when viewed from the second direction.

According to one embodiment, the driving unit includes a case formed to be long in a direction perpendicular to the ground; a lower cover disposed at the bottom of the case; a switch fixture having a shape that protrudes in a vertical direction from the center of the lower cover; a pair of limit switches provided in symmetrical shapes on both sides of the switch fixture and generating an electrical signal when contacted by an external object; an upper cover disposed on top of the case; a hollow reducer disposed on the lower side of the upper cover; A reducer fixture detachably installed between the upper cover and the hollow reducer and for fixing the hollow reducer to the upper cover; A central part is connected to the output end of the hollow reducer, and the first end is connected to the rotating part, so that a rotation shaft for rotating the rotating part using power output from the hollow reducer; a limiter connected to the second end of the rotation shaft, rotated integrally with the rotation shaft, and rotating between the pair of limit switches; and a drive motor for generating rotational power and transmitting it to the hollow reducer, wherein the limiter has a shape extending in a direction horizontal to the ground from the second end of the rotation shaft, and an end of the limiter is It may be located on the opposite side of the drive motor with respect to the switch fixture.

According to one embodiment, the driving unit includes a motor mounting plate that is detachably installed between the driving motor and the hollow reducer and fixes the driving motor to the hollow reducer; and a connection plate for fixing the switch fixture and the motor mounting plate to each other, wherein the lower cover, the switch fixture, the connection plate, the motor mounting plate, the hollow reducer, the reducer fixture, and the upper cover. may have a sequentially connected structure.

According to one embodiment, the motor mounting plate is a hole into which a first fastening screw that penetrates the drive motor and is fastened to the motor mounting plate is fastened, and is formed in a direction crossing the upper and lower surfaces of the motor mounting plate. 1st hall; a second hole through which a second fastening screw fastened to the hollow reducer passes through the motor mounting plate and formed in a direction crossing the upper and lower surfaces of the motor mounting plate; and a third hole formed on a side of the motor mounting plate as a hole through which a third fastening screw is fastened to the motor mounting plate through the connection plate.

According to one embodiment, it is possible to maintain a constant azimuth angle with the sun during the time of observation, so that the observation quality of the observation system can be maintained at high quality.

According to one embodiment, the overall structure is provided in a vertical form to ensure optimal performance of the motor and at the same time minimize wind resistance, thereby stably installing the solar tracker even in areas with a lot of wind and located in the main path of typhoons. and can be operated.

According to one embodiment, it rotates according to the amount and distribution of light during the day, and when the sunset is confirmed, a limit switch is applied to return it to the initial position, starting from the same angle every day and rotating at the same angle. It may end.

1 is a perspective view of a solar tracker according to an embodiment.
Figure 2 is a diagram showing side surfaces of different shapes viewed from two directions in a solar tracker according to an embodiment.
Figure 3 is a partially cut away perspective view of a solar tracker according to an embodiment.
Figure 4 is a block diagram showing the connection relationship of solar tracker components according to an embodiment.
Figure 5 is an exploded perspective view showing a portion of a driving unit of a solar tracker according to an embodiment.
Figure 6 is a diagram showing a power input shaft according to one embodiment.
Figure 7 is a diagram showing a motor mounting plate according to one embodiment.

Hereinafter, embodiments will be described in detail through exemplary drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing an embodiment, if a detailed description of a related known configuration or function is judged to impede understanding of the embodiment, the detailed description will be omitted.

Additionally, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component may be directly connected or connected to that other component, but there is no need for another component between each component. It should be understood that may be “connected,” “combined,” or “connected.”

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, the description given in one embodiment may be applied to other embodiments, and detailed description will be omitted to the extent of overlap.

FIG. 1 is a perspective view of a solar tracker according to an embodiment, and FIG. 2 is a view showing sides of a solar tracker according to an embodiment, with different shapes viewed from two directions.

Referring to Figures 1 and 2, the solar tracker 100 according to one embodiment can be applied to a marine science base that is already equipped with a power source and communication environment. The solar tracker 100 is a fixed platform and can be precisely controlled to maintain a constant azimuth angle with the sun during the time of observation, so it has the advantage of avoiding errors caused by direct sunlight in the optical sensor. Meanwhile, depending on the installation location, the solar tracker 100 according to one embodiment has a structure that minimizes wind resistance so that precise measurements can be made even in places where there is a lot of wind and is located in the main path of a typhoon. . The solar tracker 100 may include a driving unit 110, a rotating unit 130, and a sensing unit 150.

The driving unit 110 may be formed to be long in a direction perpendicular to the ground. According to the structure of the drive unit 110, as described above, it is possible to not only reduce wind resistance, but also minimize power loss that may occur in the process of changing the power transmission direction, and simplify the overall power transmission structure. Or, by straightening it, the motor driving the rotating shaft can show optimal performance. An exemplary configuration of the driving unit 110 will be described later.

The rotating unit 130 is installed above the driving unit 110 and can be rotated by the driving unit 110. The rotating unit 130 may be rotated according to the position of the sun by the driving unit 110 based on the amount and/or distribution of light detected using the sensing unit 140. In this way, the rotating unit 130 can be precisely controlled by applying the principle of aligning the sensor to a specific position with respect to the direction parallel to the light.

On the other hand, when the solar tracker 100 according to the embodiment was not used, an unusual result was shown in which the distribution of the spectrum by wavelength diverges in the observation at a time when the azimuth angle with the sun decreases depending on the location where the sensor is installed, resulting in a divergence of the spectrum distribution by wavelength. A situation occurred in which observational data from a specific time were excluded from data selection for quality verification. However, as described above, the solar tracker 100 according to the embodiment can maintain the direction of the rotating unit 130 (and the sensing unit 150 installed thereon) constant according to the position of the sun, so that the problems as described above are avoided. and improve quality test results across all timescales.

The rotating unit 130 includes a base frame 131 rotatably connected to the upper side of the driving unit 110, a vertical frame 132 extending in a direction perpendicular to the base frame 131, and a base frame 131. ), a horizontal frame 133 connected to the upper side of the vertical frame 132 in a horizontal direction with respect to ), a sensor fixture 134 for fixing at least some of the sensors of the sensing unit 150, and a driving unit 110. It may include a power input shaft 135 (see FIG. 3) that receives power.

The sensing unit 150 is installed on the rotating unit 130 and rotates together with the rotating unit 130, and can measure ocean information. The sensing unit 150 may include a GPS sensor 151, a heading sensor 152, an optical sensor 153, an atmospheric radiation intensity sensor 154, and a sea level radiation intensity sensor 155. Meanwhile, unless otherwise stated, the positions of each sensor 151, 152, 153, 154, and 155 may be changed, and their names may be different depending on the measurement object. It should be noted that, unlike the examples shown in the drawings or described below, sensors of different types than those described above may be installed in the same location to reduce resistance to wind.

The GPS sensor 151 can not only confirm the location of the solar tracker 100, but also provide information for test measurement and perform functions for time and location synchronization.

The heading sensor 152 is a sensor for monitoring the posture of at least one sensor provided in the sensing unit 150, and may also be called a “motion sensor.” By checking the hourly rotation angle of the solar tracker 100, the daily maximum rotation angle (e.g. 180 degrees), and whether the return after sunset function operates normally, the stability and accuracy of the sensor that measures the motion of the solar tracker 100 are confirmed. Allows you to check. This function is available after installation of the product, but it can also be used to test the product before installation. For example, in order to check whether the operation of the limit switch 113 (see FIG. 2) and the limiter 124 (see FIG. 2), which will be described later, are performed normally, the limiter 124 is moved to the left and right limits several times and the motion sensor By examining the measurement results, the total rotation angle of the rotating part 130 can be confirmed and it can be checked whether the heading sensor 152 is measured at a constant value at the same position.

The optical sensor 153 is a sensor that detects the amount and distribution of light and may also be called an “illuminance sensor.” According to the optical sensor 153, it is possible to track the position of the sun, so when the driving unit 110 is controlled based on the information measured by the optical sensor 153, the rotating unit 130 is rotated at a constant angle with respect to the sun. It can be adjusted to suit your position. For example, the optical sensor 153 can apply a shadow tracking method to enable precise tracking, such as predictive tracking, even on cloudy days.

The atmospheric radiation intensity sensor 154 is installed slanted upward with respect to the ground to face the atmosphere, and may be installed on one side of the vertical frame 132 as shown.

The sea level radiation intensity sensor 155 is installed slanted downward with respect to the ground toward the sea level, and may be installed on the other side of the vertical frame 132 located opposite to the atmospheric radiation intensity sensor 154.

In the case of the above-described arrangement of the atmospheric radiation intensity sensor 154 and the sea surface radiation intensity sensor 155, as shown in (a) of FIG. 2, the first direction horizontal to the ground (e.g., the x-axis of FIG. 2) When viewed in the negative direction, the atmospheric radiation intensity sensor 154, the sensor fixture 134, the vertical frame 132, and the sea level radiation intensity sensor 155 have portions that overlap each other, and the atmospheric radiation intensity sensor 154 ) and the sea level radiation intensity sensor 155 may be arranged in an “X-shaped” shape. In other words, by arranging a plurality of parts that can act as resistance to the wind to overlap each other in the direction of wind, the resistance to the wind can be reduced, and as a result, the solar tracker 100 can be used in terrain with strong winds. Even when positioned, it can be operated stably and precisely.

On the other hand, as shown in (b) of FIG. 2, when viewed from a second direction that is horizontal to the ground and perpendicular to the first direction (e.g., the positive direction of the y-axis in FIG. 2), the atmospheric radiation intensity sensor and the sensor fixture (134), the vertical frame 132, and the sea level radiation intensity sensor may not have overlapping portions. In this case, as described above, resistance to wind increases when the wind blows from the second direction compared to when the wind blows from the first direction, so it is desirable to compensate for this. Therefore, by forming at least one ventilation hole 132a through which air can circulate on the side of the vertical frame 132 that is visible when viewed from the second direction, resistance to wind in the second direction can be reduced. For example, the size and/or number of ventilation holes 132a formed in the vertical frame 132 can be adjusted so that the area of the solar tracker 100 viewed from the first direction is the same as the area viewed from the second direction. .

Figure 3 is a partially cut away perspective view of a solar tracker according to an embodiment, and Figure 4 is a block diagram showing the connection relationship of solar tracker components according to an embodiment.

Referring to Figures 3 and 4, the driving unit 110 according to one embodiment includes a case 111, a lower cover 112 located at the lower part of the case 111, a switch fixture 113, and a limit switch 114. ), connection plate 115, motor mounting plate 116, drive motor 117, hollow reducer 118, reducer fixture 119, upper cover 120 disposed on the upper part of case 111, rotation It may include an axis 121, an encoder fixture 122, an encoder 123, and a limiter 124.

The case 111 can be formed to be long in a direction perpendicular to the ground, thereby reducing and equalizing resistance to wind applied to the entire solar tracker 100 at various rotation angles. Case 111 may be made of, for example, stainless steel material that is resistant to corrosion and salt. The above materials are used in components other than the case 111, such as the base frame (131, see FIG. 1), the vertical frame (132, see FIG. 1), and/or the horizontal frame (133), which are parts exposed to the outside. Please note that it can also be applied to other parts, including.

The switch fixture 113 may have a shape that protrudes in a vertical direction from the center of the lower cover 112. The switch fixture 113 may include a lower fixing plate 1131 and a vertical fixing plate 1132.

The lower fixing plate 1131 is a long part coupled to the upper surface (inner surface) of the lower cover 112. For example, the lower fixing plate 1131 may be long coupled so as to cross the center of the upper surface. The lower fixing plate 1131 serves to minimize shaking of the vertical fixing plate 1132 and stably support the vertical fixing plate 1132. For example, the lower fixing plate 1131 may be fixed to the upper surface of the lower cover 112 by a fastening member that penetrates the lower fixing plate 1131 in the vertical direction from the upper surface of the lower fixing plate 1131. Meanwhile, the lower fixing plate 1131 and the lower cover 112 may be joined through a method such as mutual welding without a separate fastening member.

The vertical fixing plate 1132 is a part installed from the center of the lower fixing plate 1131 along the central axis of the driving unit 110 or parallel to the central axis, and provides a space where a pair of limit switches 114 can be installed. can do. The lower surface of the vertical fixing plate 1132 may be fixed to the upper surface of the lower fixing plate 1131 by a fastening member that penetrates the lower fixing plate 1131 in the vertical direction from the lower surface of the lower fixing plate 1131. Meanwhile, the vertical fixing plate 1132 and the lower fixing plate 1131 may be joined to each other through a method such as welding without a separate fastening member.

The limit switch 114 is provided in a pair in a symmetrical shape on both sides of the switch fixture 113, and can generate an electric signal when contacted by an external object (eg, limiter 124). The limit switch 114 may be responsible for allowing the rotating unit 130 to return to the initial measurement position when the sunset time has elapsed. For example, when the limiter 124 rotates at a sufficient angle and contacts one of the pair of limit switches 114, the control unit (not shown) detecting the information reverses the drive motor 117 in the opposite direction. It can be rotated. In addition, when the limiter 124 rotates in reverse at a sufficient angle and comes into contact with the remaining one of the pair of limit switches 114, the control unit that detects the information stops the drive motor 117 and stops the drive motor 117 at a specific position. ) can be stopped. Through this operation, the drive motor 117 may stop driving and wait until a certain point in time (e.g., sunrise time, a certain time, or when a sufficient amount and/or distribution of light is detected, etc.). As a result, the solar tracker 100 can start at the same angle and end at the same angle every day by applying the limit switch 114.

The connection plate 115 is for fixing the switch fixture 113 and the motor mounting plate 116 to each other. By the connection plate 115, the switch fixture 113 and the connection plate 115 are connected from the lower cover 112. ), the internal parts of the case 111, through the motor mounting plate 116, the hollow reducer 118, and the reducer fixture 119 to the upper cover 120, may have a structure in which the internal parts of the case 111 are connected sequentially and/or circularly. there is.

The switch fixture 113 may be fixed to one side of the connection plate 115 in a face-to-face state, and the motor mounting plate 116 may be fixed to the other side in a face-to-face state. Each counterpart may be fastened to each other by a fastening member that penetrates the connection plate 115 in opposite directions. For example, a plurality of fastening members arranged along the width direction of the connection plate 115 are fastened to the motor mounting plate 116 that penetrates one side of the connection plate 115 and is in contact with the other side of the connection plate 115, A plurality of fastening members arranged along the height direction of the connection plate 115 may penetrate the other side of the connection plate 115 and be fastened to the vertical fixing plate 1132 in contact with one side of the connection plate 115.

The motor mounting plate 116 is for fixing the drive motor 117 to the hollow reducer 118. For example, it can be installed detachably between the drive motor 117 and the hollow reducer 118. there is. By providing the motor mounting plate 116 in a detachable manner, convenience of work can be improved when one or more of the drive motor 117 and the hollow reducer 118 breaks down or requires repair work. In addition, the shape of both sides of the motor mounting plate 116 can be manufactured to match the shape of the output end of a commercial motor and the input end of a commercial reducer, respectively, so it can function as a kind of adapter. Therefore, according to the motor mounting plate 116, a commercial product can be used. This makes it possible to manufacture the driving unit 110, which is advantageous in terms of manufacturing cost and effort. An exemplary shape of the motor mounting plate 116 will be described later with reference to FIG. 7 .

The drive motor 117 can generate rotational power and transmit it to the hollow reducer 118. The driving motor 117 may function as a motor that rotates the rotating unit 130 based on information sensed by the optical sensor 153 of the sensing unit 150 (see FIG. 1). For example, by using a general DC motor as the drive motor 117, it is possible to control the solar tracking detection time interval, return to origin at sunset, and limit value in the rotation direction (rotation angle).

The hollow reducer 118 may be disposed on the lower side of the upper cover 120. The hollow reducer 118 serves to slow down the drive motor 117 so that the drive motor 117 can rotate while maintaining a constant speed with more accurate accuracy. The hollow reducer 118 outputs the rotational force input from the drive motor 117 through the rotation shaft 121 installed in the hollow formed inside, thereby transmitting power to both the upper and lower sides of the rotation shaft 121. let it be

The reducer fixture 119 is for fixing the hollow reducer 118 to the upper cover 120, and can be detachably installed, for example, between the upper cover 120 and the hollow reducer 118. . By providing the reducer fixture 119 in a detachable manner, convenience of work can be improved when the hollow reducer 118 is broken or maintenance work is required, and the hollow reducer 118 can be manufactured using a commercial product. This provides advantages in terms of production cost and effort.

The rotation shaft 121 can rotate the rotary unit 130 using power output from the hollow reducer 118. The central part of the rotating shaft 121 may be connected to the output end of the hollow reducer 118, and the first end 121a (see FIG. 5) of the rotating shaft 121 may be connected to the rotating part 130. Meanwhile, the second end 121b (see FIG. 5) of the rotation shaft 121 is connected to the limiter 124, thereby allowing the limiter 124 to rotate according to the rotation angle of the rotation part 130. The encoder fixture 122 and the encoder 123, including the connection structure of the second end 112b of the rotation shaft 121, will be described later with reference to FIG. 5.

The limiter 124 is connected to the second end 112b of the rotation shaft 121 and rotates integrally with the rotation shaft 121, and can rotate between a pair of limit switches 114. The limiter 124 may be in contact with a pair of limit switches 114 according to the rotation angle of the rotation axis 121, and through this operation, the pair of limit switches 114 are connected to the driving motor 117. A signal for control can be transmitted to the control unit.

For example, the limiter 124 has a shape that extends horizontally to the ground from the second end 112b of the rotation axis 121, as shown, and the end of the limiter 124 is a switch fixture ( It may be located on the opposite side of the drive motor 117 based on 113). According to this structure, the drive motor 117, which occupies a relatively large volume, is avoided within the radius in which the limiter 124 moves, and as a result, the rotary unit 130 can be rotated within a sufficient movable range.

Meanwhile, as shown in the block diagram of FIG. 4, at least some of the components of the driving unit 110 (e.g., switch fixture 113, connection plate 115, motor mounting plate 116, hollow The type reducer 118 and the reducer fixture 119) are sequentially installed inside the case 111 from the lower cover 112 located at the lower end of the case 111 to the upper cover 120 located at the upper end of the case 111. It has a structure that is connected to .

In other words, the lower cover 112, switch fixture 113, connection plate 115, motor mounting plate 116, hollow reducer 118, reducer fixture 119, and upper cover 120 are sequentially connected. It can have a structure. Accordingly, the driving unit 110 can maintain the component parts (e.g., 113, 115, 116, 118, and 119) stably supported without clearance within the drive unit 110, without providing a separate internal frame. In other words, the above-described component parts (eg, 113, 115, 116, 118, and 119) can be viewed as performing an internal frame function.

Therefore, the remaining parts (e.g., limit switch 114, drive motor 117, rotation axis 112, and limiter 124) that are directly or indirectly connected to the components that perform the internal frame function described above are also included in the case ( 111) It can be stably supported from the inside.

Figure 5 is an exploded perspective view showing a portion of a driving unit of a solar tracker according to an embodiment.

Referring to FIG. 5, the encoder fixture 122 according to an embodiment connects the encoder 123 and the hollow reducer 118 to each other, and may have a structure that is detachable from each other, for example. there is. The encoder 123 can measure the rotation angle of the rotating part 130 by detecting the rotation amount of the rotating shaft 121.

The rotation shaft 121 may include an upper power transmission shaft 121a and a lower power transmission shaft 121b.

First, the lower power transmission shaft 121b is a portion that protrudes downward among the rotation shaft 121 and can penetrate the encoder fixture 122 and the encoder 123 and be fixed to the limiter 124. According to the lower power transmission shaft 121b, the limiter 124 can be rotated according to the rotation angle of the rotating part 130, and as a result, depending on whether the limiter 124 and the limit switch 114 are in contact, the rotating part ( 130) to control the position.

Next, the upper power transmission shaft 121a is a portion that protrudes upward from the rotation shaft 121 and is connected to the power input shaft 135 to transmit power to the rotation unit 130. An exemplary form of the power input shaft 135 will be described later with reference to FIG. 6.

Figure 6 is a diagram showing a power input shaft according to one embodiment.

Referring to FIG. 6, one side of the power input shaft 135 according to an embodiment may be fixed to the base frame 131 (see FIG. 1) and the other side may be connected to the upper power transmission shaft 121a. FIG. 6 (a) is a perspective view showing the upper part of the power input shaft 135, and FIG. 6 (b) is a perspective view showing the lower part of the power input shaft 135. The power input shaft 135 may include an input body 135a, a base frame fastening portion 135b, a power transmission shaft receiving portion 135c, and a fitting portion 135d.

The base frame fastening portion 135b is a hole (hole or groove) formed on the upper surface of the power input shaft 135. The base frame fastening portion 135b connects the base frame 131 from the upper side of the base frame 131. A penetrating fastening member may be fastened.

The power transmission shaft receiving portion 135c is a hole formed on the lower surface of the power input shaft 135, and the upper power transmission shaft 121a can be inserted into the power transmission shaft receiving portion 135c.

The fitting portion 135d is a part that is recessed outward from the power transmission shaft receiving portion 135c, and the power input shaft 135 and the upper power transmission shaft 121a are mutually restrained in the fitting portion 135d. A fixture (not shown) that allows both to rotate at the same angle may be fitted. For example, one side of the fixture is inserted into the fitting portion 135d recessed in the power transmission shaft receiving portion 135c, and the other side of the fixture is inserted into the fitting portion 121c recessed in the upper power transmission shaft 121a (Fig. 3) can be inserted.

Meanwhile, unlike the above, the power transmission shaft receiving portion 135c and the upper power transmission shaft 121a are provided with a structure (e.g., wave shape or sawtooth shape, etc.) that engages with each other without a separate fixture, thereby transmitting power to each other. Let me make it clear that it is possible to do this. However, when using a separate fixture as described above, if the fixture is damaged, only the fixture needs to be replaced without the need to replace the remaining parts, which can be advantageous in terms of maintenance cost and effort.

Figure 7 is a diagram showing a motor mounting plate according to one embodiment.

Referring to FIG. 7, the motor mounting plate 116 according to one embodiment may include a plurality of holes 116a, 116b, and 116c.

The first hole 116a is a hole into which the first fastening screw that penetrates the drive motor 117 and is fastened to the motor mounting plate 116 is fastened, and is formed in a direction crossing the upper and lower surfaces of the motor mounting plate 116. can be formed.

The second hole 116b is a hole through which the second fastening screw fastened to the hollow reducer 118 passes through the motor mounting plate 116, in a direction crossing the upper and lower surfaces of the motor mounting plate 116. can be formed.

The third hole 116c is a hole into which a third fastening screw that penetrates the connection plate 115 and is fastened to the motor mounting plate 116 is fastened, and may be formed on the side of the motor mounting plate 116.

According to the results of observations so far, there is significant variation in the optical properties of seawater depending on time even during the day. In this way, when a fixed observation system using the solar tracker 100 according to an embodiment is constructed in a sea area where the daily or seasonal changes in the optical properties of seawater are large, long-term field observation data can be secured, so that the marine satellite's It is expected that it will be able to contribute not only to quality verification but also to the optimization of marine satellite output generation algorithms.

As described above, although the embodiments have been described with limited drawings, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques may be performed in a different order than the described method, and/or components of the described structure, device, etc. may be combined or combined in a different form than the described method, or may be used with other components or equivalents. Appropriate results can be achieved even if replaced or substituted by .

100: Solar Tracker
110: driving unit
111: case
112: lower cover
113: switch fixture
1131: Lower fixing plate
1132: Vertical fixing plate
114: limit switch
115: connection plate
116: Motor mounting plate
116a: Hole 1
116b: 2nd hole
116c: Hole 3
117: drive motor
118: hollow reducer
119: Reducer fixture
120: upper cover
121: rotation axis
121a: upper power transmission shaft
121b: lower power transmission shaft
121c: Transmission side fitting part
122: Encoder fixture
123: encoder
124: Limiter
130: Rotating part
131: Base frame
132: vertical frame
132a: vent
133: horizontal frame
134: Sensor fixture
135: power input shaft
135a: input body
135b: Base frame fastening part
135c: Power transmission shaft receiving portion
135d: Input side fitting part
150: Sensing unit
151: GPS sensor
152: Heading sensor (motion sensor)
153: Light sensor (illuminance sensor)
154: Atmospheric radiation intensity sensor
155: Sea level radiation intensity sensor

Claims (5)

A driving unit formed in a direction perpendicular to the ground;
a rotating part installed above the driving unit and capable of being rotated by the driving unit; and
It is installed on the rotating part and rotates with the rotating part, and includes a sensing part for measuring marine information,
The rotating part,
a base frame rotatably connected to the upper side of the driving unit;
a vertical frame connected in a direction perpendicular to the base frame; and
It includes a horizontal frame connected to the upper side of the vertical frame in a horizontal direction with respect to the base frame,
The sensing unit,
an atmospheric radiation intensity sensor installed on one side of the vertical frame; and
A solar tracker including a sea level radiation intensity sensor installed on the other side of the vertical frame located opposite to the atmospheric radiation intensity sensor. According to paragraph 1,
When viewed in a first direction horizontal to the ground, the atmospheric radiation intensity sensor, the vertical frame, and the sea level radiation intensity sensor have portions that overlap each other, and the atmospheric radiation intensity sensor and the sea surface radiation intensity sensor mutually " It is arranged in an "X" shape,
When viewed from a second direction that is horizontal to the ground and perpendicular to the first direction, the atmospheric radiation intensity sensor, the vertical frame, and the sea level radiation intensity sensor do not have overlapping portions,
A solar tracker wherein at least one ventilation hole through which air can circulate is formed on a side of the vertical frame visible when viewed from the second direction. According to paragraph 1,
The driving unit,
A case formed in a direction perpendicular to the ground;
a lower cover disposed at the bottom of the case;
a switch fixture having a shape that protrudes in a vertical direction from the center of the lower cover;
a pair of limit switches provided in symmetrical shapes on both sides of the switch fixture and generating an electrical signal when contacted by an external object;
an upper cover disposed on top of the case;
a hollow reducer disposed on the lower side of the upper cover;
A reducer fixture detachably installed between the upper cover and the hollow reducer and for fixing the hollow reducer to the upper cover;
A central part is connected to the output end of the hollow reducer, and a first end is connected to the rotating part, so that a rotation shaft for rotating the rotating part using power output from the hollow reducer;
a limiter connected to the second end of the rotation shaft, rotated integrally with the rotation shaft, and rotating between the pair of limit switches; and
It includes a drive motor for generating rotational power and transmitting it to the hollow reducer,
The limiter has a shape extending in a direction horizontal to the ground from the second end of the rotation axis, and the end of the limiter is located on the opposite side of the drive motor with respect to the switch fixture. According to paragraph 3,
The driving unit,
A motor mounting plate detachably installed between the drive motor and the hollow reducer and for fixing the drive motor to the hollow reducer; and
Further comprising a connection plate for fixing the switch fixture and the motor mounting plate to each other,
A solar tracker, characterized in that the lower cover, the switch fixture, the connection plate, the motor mounting plate, the hollow reducer, the reducer fixture, and the upper cover are sequentially connected. According to clause 4,
The motor mounting plate is,
A first hole formed in a direction crossing the upper and lower surfaces of the motor mounting plate as a hole through which the driving motor is fastened to the first fastening screw fastened to the motor mounting plate;
a second hole through which a second fastening screw fastened to the hollow reducer passes through the motor mounting plate and formed in a direction crossing the upper and lower surfaces of the motor mounting plate; and
A solar tracker comprising a third hole formed on a side of the motor mounting plate as a hole through which a third fastening screw is fastened to the motor mounting plate through the connection plate.