Covering structure for surveying instrument and surveying instrument

Abstract

To provide a covering structure of a surveying instrument capable of reducing the influence of direct sunlight, rain or the like while suppressing interference with surveying by a surveying mechanism in spite of a simple structure, and the surveying instrument.SOLUTION: A surveying device A, which is an example of a surveying device to which the present invention is applied, includes a robot unit 1 and a covering structure 2. The robot unit 1 includes a survey mechanism 10, a main body 11, and wheels 12. The covering structure 2 includes a roof part 20, a support 21, and an attachment part 22. The roof portion 20 covers the surveying mechanism 10 from above. Four gutters 200 are provided on the peripheral edge of the roof part 20. Further, a gap 201 is formed at a position where the pillar 21 of the roof member 20 is attached and between the tub portions 220 SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a covering structure for a surveying instrument and a surveying instrument. More specifically, the present invention relates to a covering structure for a surveying instrument and a surveying instrument that have a simple structure, yet are capable of suppressing interference with surveying by a surveying mechanism and reducing the effects of direct sunlight, rain, etc. [Background technology]

[0002] In recent years, robots equipped with surveying mechanisms such as LiDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging) and cameras have been used as surveying devices in surveying and investigation.

[0003] Furthermore, robots equipped with LiDAR or the like that are capable of autonomously moving and performing laser scanning are being adopted (see, for example, Non-Patent Document 1).

[0004] Furthermore, in surveying and the like, not only robots equipped with surveying mechanisms are used, but also fixed surveying devices with laser scanners attached to tripods. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] Leica Geosystems Co., Ltd. official website Leica BLK ARC, [online], [searched June 30, 2024], Internet<URL: https: / / shop.leica-geosystems.com / jp / ja-JP / leica-blk / blk-arc / overview > Summary of the Invention [Problem to be solved by the invention]

[0006] Conventional surveying instruments, including the robot described in Non-Patent Document 1, are used not only in indoor environments but also in outdoor environments, but are not designed to take into account the effects of weather, etc.

[0007] More specifically, if the robot's body or measuring mechanism is exposed to direct sunlight, it may become hot and malfunction. Also, if the robot is used in rainy weather, the body may get wet and malfunction.

[0008] Furthermore, rain falling directly on surveying mechanisms using lasers or cameras may have a negative impact on the surveying results.

[0009] However, conventional surveying devices have not been designed to reduce the effects of sunlight and rain, making it difficult to perform precise surveys when used in outdoor environments such as under the blazing sun or in the rain.

[0010] The present invention has been devised in consideration of the above points, and aims to provide a covering structure for a surveying instrument and a surveying instrument that have a simple structure yet are able to reduce the effects of direct sunlight, rain, etc. while minimizing interference with surveying by the surveying mechanism. [Means for solving the problem]

[0011] In order to achieve the above-mentioned object, the covering structure for a surveying device of the present invention comprises a column-shaped support section attached to a surveying device having a predetermined surveying mechanism, a roof section supported via the support section and covering the upper part of the predetermined surveying mechanism, and a gutter section provided along the periphery of the roof section to guide rainwater flowing over the roof section and having a drainage section formed at a position corresponding to the support section to discharge rainwater from the roof section.

[0012] Here, a column-shaped support part attached to a surveying device having a predetermined surveying mechanism and a roof part supported by the support part and covering the upper part of the predetermined surveying mechanism can be placed above the predetermined surveying mechanism, and the roof part can cover the predetermined surveying mechanism. In other words, the predetermined surveying mechanism can be prevented from being directly exposed to sunlight or rainwater. Furthermore, since the predetermined surveying mechanism is surrounded by the support part and the roof part, if the surveying device falls over, the support part or the roof part is likely to come into contact with the ground, etc., before the surveying mechanism, making it possible to protect the surveying mechanism.

[0013] In addition, the gutter section is provided along the periphery of the roof section and guides rainwater flowing along the roof section, and is also provided with a drainage section that discharges rainwater from the roof section, allowing rainwater that falls on the roof section to be guided, collected in the drainage section, and then discharged from the drainage section to the outside.

[0014] Furthermore, by locating the drainage section at a position corresponding to the support section, it is possible to control the location where rainwater falls when it is discharged. In other words, it is easier for rainwater discharged from the drainage section to fall through the support section or its vicinity. This makes it easier to keep the range of the surveying mechanism's measurement range that is affected by rainwater to the same extent as the range where the support section interferes, making it easier to ensure the accuracy of the surveying.

[0015] Furthermore, if the specified surveying mechanism is at least one of a LiDAR and a camera, the type of unit can prevent sunlight and rainwater from directly hitting the LiDAR or camera. Note that LiDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging) here refers to a device that measures the reflection of laser light to measure the distance to an object, the direction, and the reflection intensity.

[0016] Furthermore, if the tub portion is a plate-like body formed by standing upright from the periphery of the roof portion and the drainage portion is a slit formed in the plate-like body, the tub portion and the drainage portion formed in the tub portion can be constructed with a simple structure.

[0017] Furthermore, if a GNSS antenna is attached to the roof and made of a metal plate, it becomes possible for the surveying equipment to acquire position information, and the metal roof provides a ground plane effect, which stabilizes the radiation pattern of the GNSS antenna, reduces multipath interference from the ground surface and surrounding objects, and improves the receiving sensitivity of the GNSS antenna, thereby increasing the accuracy of position information acquisition by the GNSS antenna.

[0018] Furthermore, if the support pillar is formed into a cylindrical shape with a diameter of 2 mm or less, the strength to support the roof portion is maintained while the range in which the support pillar interferes within the surveying range of the specified surveying mechanism is reduced, making it easier to ensure the accuracy of the surveying.

[0019] Furthermore, if the angular range of the support unit is 4.1 degrees or less with respect to the angular range of the horizontal field of view of the specified surveying mechanism, the range in which the support unit interferes within the measurement range of the specified surveying mechanism will be sufficiently small, resulting in a structure that makes it easier to ensure surveying accuracy. Note that the angular range of the horizontal field of view of the specified surveying mechanism here refers to, for example, if the specified surveying mechanism measures using laser light, the angular range over which the laser light can be irradiated in the horizontal direction. Also, for example, if the specified surveying mechanism is a device that uses a camera to capture images, it refers to the angular range over which the camera can capture images in the horizontal direction.

[0020] In addition, in order to achieve the above-mentioned object, the surveying device of the present invention comprises a covering structure having a predetermined surveying mechanism, a pillar-shaped support section, a roof section supported via the support section and covering the above of the predetermined surveying mechanism, and a gutter section provided along the periphery of the roof section to guide rainwater flowing over the roof section and having a drainage section formed at a position corresponding to the support section to discharge rainwater from the roof section.

[0021] Here, the roof is placed above the specified surveying mechanism and covered by a column-shaped support and a roof supported by the support and covering the upper part of the specified surveying mechanism. This means that the specified surveying mechanism can be prevented from being directly exposed to sunlight or rainwater. Furthermore, since the specified surveying mechanism is surrounded by the support and roof, if the surveying device falls over, the support or roof is likely to come into contact with the ground or the like before the surveying mechanism, making it possible to protect the surveying mechanism.

[0022] In addition, the gutter section is provided along the periphery of the roof section and guides rainwater flowing along the roof section, and is also provided with a drainage section that discharges rainwater from the roof section, allowing rainwater that falls on the roof section to be guided, collected in the drainage section, and then discharged from the drainage section to the outside.

[0023] Furthermore, by locating the drainage section at a position corresponding to the support section, it is possible to control the location where rainwater falls when it is discharged. In other words, it is easier for rainwater discharged from the drainage section to fall through the support section or its vicinity. This makes it easier to keep the range of the surveying mechanism's measurement range that is affected by rainwater to the same extent as the range where the support section interferes, making it easier to ensure the accuracy of the surveying. [Effects of the Invention]

[0024] The covering structure for a surveying instrument and the surveying instrument according to the present invention have a simple structure, yet are capable of reducing the effects of direct sunlight, rain, etc. while minimizing interference with surveying by the surveying mechanism. [Brief explanation of the drawings]

[0025] [Figure 1] 1A and 1B are diagrams showing a surveying instrument according to a first embodiment of the present invention, in which (a) is a schematic perspective view and (b) is a schematic plan view. [Figure 2] 1A and 1B are diagrams showing a surveying instrument according to a first embodiment of the present invention, in which (a) is a schematic side view and (b) is a schematic front view. [Figure 3] FIG. 10 is a schematic side cross-sectional view showing another structure of the roof portion. [Figure 4] 5A and 5B are diagrams showing a surveying instrument according to a second embodiment of the present invention, in which (a) is a schematic perspective view and (b) is a schematic plan view. [Figure 5] 10A and 10B are diagrams showing a surveying instrument according to a third embodiment of the present invention, in which (a) is a schematic perspective view and (b) is a schematic plan view. [Figure 6] 6A and 6B are graphs showing the results of temperature changes in an example and a comparative example, where (a) is a graph showing the temperature changes inside the surveying mechanism, and (b) is a graph showing the temperature changes inside the main body. DETAILED DESCRIPTION OF THE INVENTION

[0026] [First embodiment of the present invention] A first embodiment of the present invention will be described below with reference to the drawings to facilitate understanding of the present invention. Note that the content shown below is an example of a covering structure for a surveying instrument to which the present invention is applied, and an example of a surveying instrument, but the content of the present invention is not limited to this, and settings can be changed as appropriate.

[0027] In the following description, with reference to Figure 2(a), the roof portion 20 as seen from the main body portion 11 will be referred to as the "upper or upper side", and the main body portion 11 as seen from the roof portion 20 will be referred to as the "lower or lower side".

[0028] Furthermore, with reference to FIG. 2(a), the direction connecting the top and bottom is referred to as the "up-down direction or vertical direction," and the direction perpendicular to the up-down direction is referred to as the "horizontal direction."

[0029] Also, based on Figure 1(a), the side of the surveying mechanism 10 seen from the four pillars 21 will be referred to as the "inside" or "inner side", and the side of the four pillars 21 seen from the surveying mechanism 10 will be referred to as the "outside" or "outer side".

[0030] Surveying device A, which is an example of a surveying device to which the present invention is applied, is a device that moves through the environment of the survey area (including outdoor environments), acquires point cloud data for each position, simultaneously performs self-position estimation and map creation processes, and creates map information for the survey area.

[0031] As shown in FIGS. 1( a ) to 2 ( b ), the surveying device A includes a robot section 1 and a covering structure 2 .

[0032] Here, the robot unit 1 is an autonomous robot equipped with a surveying mechanism 10, and is a device that performs surveying and map creation in a survey area. The robot unit 1 can also perform surveying and the like by controlling its operation based on an external control signal.

[0033] The covering structure 2 is a part that covers the top of the surveying mechanism 10 of the robot part 1, protecting the surveying mechanism 10 from sunlight and rain. The covering structure 2 is also a structure that covers most of the robot part 1 except for some of the four wheels 12 of the robot part 1. Furthermore, when the surveying device A falls over, the covering structure 2 comes into contact with the ground or the like before the surveying mechanism 10 does, thereby protecting the surveying mechanism 10. In this structure, the top of the main body part 11, which will be described later, is also covered with the covering structure 2.

[0034] The robot unit 1 also has a surveying mechanism 10, a main body 11, and wheels 12 (see FIGS. 1(a) to 2(b)).

[0035] The surveying mechanism 10 is also configured with a LiDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging).

[0036] The surveying mechanism 10 is a device that measures the distance to an object, the direction, and the reflection intensity by measuring the reflection of a laser light L (see FIG. 2(a)). The surveying mechanism 10 is configured to be able to irradiate the laser light L in a certain range of viewing angles in the horizontal and vertical directions.

[0037] The main body 11 constitutes the main body of the robot 10. A control unit (not shown) that controls various operations of the robot 10 is built into the main body 11. This control unit controls the driving of the surveying mechanism 10 and the movement of the robot 10 via the wheels 12.

[0038] The wheels 12 are responsible for the movement of the robot 10, and four of them are provided on the main part 11. Note that known technology can be used for the wheels 12 and the structure that drives them, so detailed explanations will be omitted.

[0039] Here, the robot unit 1 is not necessarily limited to a vehicle-type robot having wheels 12. For example, it is also possible to adopt a walking robot, a ship-type robot capable of navigating on water, a flying drone or other robot with a moving mechanism.

[0040] As shown in FIGS. 1(a) to 2(b), the covering structure 2 has a roof portion 20, a support 21, and an attachment portion 22.

[0041] The roof 20 is a metal plate-like member that covers the upper part of the surveying mechanism 10. The four pillars 21 are attached to the main body 11 via mounting portions 22 and are members that support the roof 20.

[0042] Furthermore, the support pillars 21 are cylindrical metal members with a diameter of 2 mm. When the horizontal field of view (HFOV) of the surveying mechanism 10 is 360 degrees, as shown in Figure 1(b), the range of the blind spot for one support pillar 21 (the angle indicated by symbol α in Figure 1(b)) is 0.85 degrees, and the range of the blind spot for the other support pillar 21 is 1.21 degrees (the angle indicated by symbol β in Figure 1(b)).

[0043] In other words, due to the installation of four pillars 21, the total blind spot angle of the horizontal field of view of the surveying mechanism 10 is 4.1 degrees, and the range of the horizontal field of view in which the surveying mechanism 10 (LiDAR) is interfered with is approximately 1.1% of the total range (360 degrees).

[0044] As a result, the range occupied by the four columns 21 in the horizontal direction, i.e., the angular range of the blind spot where the laser light L cannot be emitted, is a small range of 4.1 degrees compared to the horizontal field of view angle of 360 degrees of the LiDAR, and the impact on the LiDAR measurement range can be kept very small. As a result, it is possible to protect the LiDAR from direct sunlight and rain while maintaining the measurement accuracy of the LiDAR.

[0045] Here, it is not necessary to provide four support pillars 21, and it is possible to reduce the number of support pillars 21 as long as they are capable of supporting the roof portion 20. In addition, along with this, it is also possible to further reduce the area occupied by the support pillars 21 that interferes with the survey range of the LiDAR in the horizontal direction. Note that a structure in which the number of members corresponding to the support pillars 21 is reduced will be described later.

[0046] Furthermore, the support pillars 21 do not necessarily have to be formed from metal cylindrical members with a diameter of 2 mm, and the material, size, and shape can be set as appropriate. However, from the viewpoints of being able to stably support the roof portion 20 and reducing the blind spot in the horizontal field of view of the LiDAR in the horizontal direction, it is preferable that the support pillars 21 be formed from metal cylindrical members with a diameter of 2 mm.

[0047] Furthermore, the total horizontal angle range occupied by the four columns 21 does not necessarily have to be limited to 4.1 degrees. However, when the horizontal field of view of the LiDAR is set to 360 degrees, it is preferable that the total horizontal angle range occupied by the four columns 21 be 4.1 degrees or less in order to maintain the accuracy of the survey.

[0048] Four gutters 200 are provided on the periphery of the roof 20. Slits 201 are formed at the positions where the supports 21 of the roof 20 are attached and between the tub sections 220 (see FIG. 1(a)). That is, four slits 201 are formed in the roof 20.

[0049] The gutter 200 is a plate-like member formed upward from the periphery of the roof 20, and is a member that guides rainwater that falls on the roof 20 to the slit 201. The slit 201 is a drainage section that discharges rainwater that falls on the roof 20 to the outside of the roof 20.

[0050] The structure of the gutter portion 200 and the slit 201 allows the location where rainwater dripping from the roof portion 20 falls to be limited to the support 21 and the area nearby.

[0051] This prevents rainwater falling on the roof portion 20 from falling horizontally to the outside of the roof portion 20 from any point other than the gap 201 in the roof portion 20, thereby reducing the impact on LiDAR surveying.

[0052] Here, it is not necessary to provide four gutter sections 200 on the periphery of roof section 20, and the number can be set as appropriate. Also, it is not necessary to form four slits 201 in roof section 20, and the number can be set as appropriate.

[0053] Furthermore, the gutter section 200 does not necessarily have to be formed as a plate-like body extending upward from the periphery of the roof section 20; its shape can be designed appropriately as long as it is possible to guide rainwater that falls on the roof section 20 into the gap 201.

[0054] Furthermore, the roof 20 does not necessarily have to be a metal plate-like member, and any material that can cover the top of the surveying mechanism 10 and protect it from direct sunlight and rain can be used as the roof. However, in order to facilitate the movement of the robot 10 and taking into consideration the impact on the surveying of the surveying mechanism 10, it is preferable that the roof 20 be made of a lightweight, opaque material.

[0055] Furthermore, the shape of the roof portion 20 is not limited to a plate-like shape. For example, as shown in Fig. 3, it is also possible to adopt a roof portion 20r having a shape with a bulging center in cross section as viewed from the side. This roof portion 20r has a gutter portion 200r formed on the periphery, and is structured so that when rainwater falls, it easily flows toward the gutter portion 200r.

[0056] The surveying instrument A, which is the first embodiment of the present invention described above, is provided with a roof 20, which protects the surveying mechanism 10 from direct sunlight and rain when used in an outdoor environment, reducing the risk of breakdown. The structure also reduces the impact of rain on the surveying, making it easier to maintain the accuracy of the surveying. Furthermore, the structure can prevent the surveying mechanism 10 from coming into contact with the ground or the like and being damaged if the surveying instrument A falls over.

[0057] [Second embodiment of the present invention] Next, a second embodiment of the present invention will be described with reference to the drawings to facilitate understanding of the present invention.

[0058] Surveying device A2, an example of a surveying device to which the present invention is applied, is a device that is installed at each measurement point in the environment of a survey area (including outdoor environments), acquires point cloud data at each position, and creates map information for the survey area. While the above-mentioned surveying device A is a device composed of an autonomous robot, surveying device A2 is installed on a tripod at each measurement position and performs surveying from a fixed position.

[0059] As shown in FIGS. 4(a) and 4(b), the surveying device A2 includes a device section 3 and a covering structure 2a.

[0060] The device unit 3 also has a surveying mechanism 10a and a tripod 30. The surveying mechanism 10a is composed of a laser scanner (LiDAR) and is a device that acquires the shape of the surrounding terrain. The tripod 30 is a support member for installing the device unit 3 at a desired measurement position.

[0061] The covering structure 2a is a part that covers the upper part of the surveying mechanism 10a of the device section 3 to protect the surveying mechanism 10a from sunlight and rain. When the surveying device A2 falls over, the covering structure 2a comes into contact with the ground or the like before the surveying mechanism 10a does, thereby protecting the surveying mechanism 10a.

[0062] As shown in FIGS. 4(a) and 4(b), the covering structure 2a has a roof portion 20a and pillars 21a.

[0063] The roof 20a is a metal plate-like member that covers the upper part of the surveying mechanism 10a. The two support posts 21a are attached to the device unit 3 via the base 31 of the tripod 30, and are members that support the roof 20a.

[0064] The support pillars 21a are cylindrical metal members with a diameter of 2 mm. Because the roof portion 20a is supported by the two support pillars 21a, the only blind spots for the laser light from the surveying mechanism 10a within the horizontal measurement range are the two support pillars 21a, which minimizes the impact on the LiDAR measurement range.

[0065] As a result, it is possible to protect the LiDAR from direct sunlight and rain while maintaining the accuracy of the LiDAR measurement.

[0066] Four gutters 200a are provided around the periphery of the roof 20a. A slit 201a is formed at the position where the support pillar 21a of the roof 20a is attached and between the tub portions 220a (see FIGS. 4(a) and 4(b)). That is, two slits 201a are formed in the roof 20a.

[0067] The structure of the gutter portion 200a and the slit 201a can limit the location where rainwater dripping from the roof portion 20a falls to the support 21a and its vicinity.

[0068] This prevents rainwater that falls on the roof portion 20a from falling horizontally to the outside of the roof portion 20a from any point other than the gap 201a in the roof portion 20a, thereby reducing the impact on LiDAR surveying.

[0069] A GNSS antenna 4 is attached to the roof 20a. A processing device (receiver) (not shown) is provided in the device section 3. A cable for the GNSS antenna 4 can be connected via a support 21a.

[0070] The GNSS antenna 4 and the processing device make it possible to acquire position information by GNSS (Global Navigation Satellite System) positioning, i.e., to acquire position information of the location where the surveying device A2 is installed.

[0071] Here, since the roof portion 20a is formed from a metal plate-like member, the roof portion 20a provides a ground plane effect, and the accuracy of GSNN positioning can be improved.

[0072] The effects of this ground plane are roughly as follows. 1. Stabilization of the radiation pattern of the GNSS antenna The ground plane can stabilize the radiation pattern of the GNSS antenna 4 and improve the gain and directivity of the antenna. 2. Multipath interference reduction It can reduce multipath interference caused by reflections from the ground and surrounding objects, improving signal quality. 3.Improved signal reception sensitivity The ground plane improves the reception sensitivity of the GNSS antenna 4, making it possible to receive even weak signals.

[0073] The surveying device A2 according to the second embodiment of the present invention described above is provided with a roof 20a, which protects the surveying mechanism 10a from direct sunlight and rain when used outdoors, reducing the risk of breakdown. The structure also reduces the impact of rain on the surveying, making it easier to maintain the accuracy of the surveying. Furthermore, the structure can prevent the surveying mechanism 10a from coming into contact with the ground or the like and being damaged if the surveying device A2 falls over.

[0074] Furthermore, in the surveying device A2, the roof portion 20a can provide a ground plane effect in GNSS positioning, thereby improving the accuracy of GSNN positioning.

[0075] [Third embodiment of the present invention] Next, a third embodiment of the present invention will be described with reference to the drawings to facilitate understanding of the present invention. The third embodiment of the present invention is a modified example of the surveying instrument A2, which is the second embodiment of the present invention described above. In the description of the surveying instrument A3, which is the third embodiment of the present invention, the same reference numerals will be used to designate components and the like that have already been described, and their description will be omitted.

[0076] As shown in FIGS. 5(a) and 5(b), the surveying device A3 includes a device section 3 and a covering structure 2b.

[0077] The covering structure 2b is a part that covers the upper part of the surveying mechanism 10a of the device unit 3 to protect the surveying mechanism 10a from sunlight and rain. When the surveying device A3 falls over, the covering structure 2b comes into contact with the ground or the like before the surveying mechanism 10a does, thereby protecting the surveying mechanism 10a.

[0078] As shown in FIGS. 5(a) and 5(b), the covering structure 2b has a roof portion 20b and pillars 21b.

[0079] The roof 20b is a metal plate-like member that covers the upper part of the surveying mechanism 10a. One support 21b is attached to the device unit 3 via the base 31 of the tripod 30, and is a member that supports the roof 20b.

[0080] Furthermore, the support pillar 21b is a cylindrical metal member with a diameter of 2 mm. Because the roof portion 20b is supported by only one support pillar 21b, the only blind spot for the laser light from the surveying mechanism 10a within the horizontal measurement range is the portion of the single support pillar 21b, and the impact on the LiDAR measurement range can be kept extremely small.

[0081] As a result, it is possible to protect the LiDAR from direct sunlight and rain while maintaining the accuracy of the LiDAR measurement.

[0082] Four gutters 200b are provided around the periphery of the roof 20b. A slit 201b is formed at the position where the support pillar 21b of the roof 20b is attached and between the tub portions 220b (see FIGS. 5(a) and 5(b)).

[0083] The structure of the gutter portion 200b and the slit 201b can limit the location where rainwater dripping from the roof portion 20b falls to one support pillar 21b and its vicinity.

[0084] This prevents rainwater that falls on the roof portion 20b from falling horizontally outside the roof portion 20b from any location other than the gap 201b in the roof portion 20b, thereby reducing the impact on LiDAR surveying.

[0085] In addition, a GNSS antenna 40 is attached to the roof portion 20b. Because the roof portion 20b is formed from a metal plate-like member, the roof portion 20b provides a ground plane effect, which can improve the accuracy of GSNN positioning.

[0086] As with this surveying device A3, the covering structure 2b can be constructed using only one support portion 20b.

[0087] As described above, the covering structure for a surveying instrument of the present invention has a simple structure, yet is capable of reducing the effects of direct sunlight, rain, etc. while suppressing interference with surveying by the surveying mechanism. Furthermore, the surveying instrument of the present invention has a simple structure, yet is capable of suppressing interference with surveying by the surveying mechanism and reducing the effects of direct sunlight, rain, and the like.

[0088] [Example] The following was carried out to confirm the suppression of temperature rise in the above-mentioned surveying device A.

[0089] [Temperature test details] In the above-mentioned surveying device A (Example), thermometers were installed inside the surveying mechanism 10 and inside the main body 11 of the robot unit 1, and the temperature change of each thermometer was measured for a certain period of time outdoors. As a comparative example, a device in which the covering structure 2 was removed from the surveying device A was also measured by installing thermometers inside the surveying mechanism 10 and inside the main body 11 of the robot unit 1. The outdoor environment was a sunny day with an outside temperature of 29°C.

[0090] Fig. 6(a) shows a graph of the results of temperature change inside the surveying mechanism 10 (temperature of the LiDAR) in the example and the comparative example. Fig. 6(b) shows a graph of the results of temperature change inside the main body 11 (temperature of the CPU) in the example and the comparative example. In the graphs of Fig. 6(a) and Fig. 6(b), "with roof" corresponds to the example, and "without roof" corresponds to the comparative example.

[0091] As shown in Figure 6(a), 35 minutes after the start of measurement, the temperature inside the surveying mechanism 10 in the Example was about 10°C lower than that in the Comparative Example. Also, as shown in Figure 6(b), 35 minutes after the start of measurement, the temperature inside the main body 11 in the Example was about 15°C lower than that in the Comparative Example. [Explanation of symbols]

[0092] A Surveying equipment L laser light 1. Robotics Club 10 Surveying organization 11 Main body 12 wheels 2 Covering structure 20 Roof 20r roof section 200 Hibe 201 Break 21 Post 22 Mounting part A2 Surveying equipment 2a Covering structure 20a Roof 200a Gutter section 201a Break 21a Post 3 Equipment section 30 Tripod 31 Base 4 GNSS antennas A3 Surveying equipment 2b Covering structure 20b Roof 200b Gutter 201b Break 21b Post 40 GNSS antenna

Claims

1. a column-shaped support part attached to a surveying device having a predetermined surveying mechanism; a roof portion supported via the support pillars and covering the upper part of the predetermined surveying mechanism; a gutter section that is provided along the periphery of the roof section and guides rainwater flowing along the roof section, and has a drainage section formed at a position corresponding to the support section to discharge rainwater from the roof section; Covering structure for surveying equipment.

2. The predetermined surveying mechanism is at least one of a LiDAR and a camera. The covering structure for a surveying instrument according to claim 1.

3. The tub portion is a plate-like body formed upright from the peripheral edge of the roof portion, The drainage portion is a slit formed in the plate-like body. A covering structure for a surveying instrument according to claim 1 or 2.

4. The angular range of the support part is 4.1 degrees or less with respect to the angular range of the field of view angle in the horizontal direction of the predetermined surveying mechanism. A covering structure for a surveying instrument according to claim 1 or 2.

5. a predetermined surveying mechanism; a covering structure having a columnar support section, a roof section supported via the support section and covering the upper part of the predetermined surveying mechanism, and a gutter section provided along the periphery of the roof section to guide rainwater flowing on the roof section and having a drainage section formed at a position corresponding to the support section to discharge rainwater from the roof section. Surveying equipment.

Images