Measuring system, measuring method of the measuring system, and mounting device

Abstract

To provide a method for simplifying surveying work of a position of a laser scanner in a three-dimensional survey using the laser scanner.SOLUTION: In a surveying system having a total station 2 installed in a reference point, and a laser scanner 3 that performs scanning by emitting laser beams and can survey a three-dimensional shape of a measurement object, the total station 2 measures a first target 4 and a second target 5 installed in two places, and the laser scanner 3 has the second target 5, measures coordinates of the first target 4, acquires coordinates of the second target 5 relative to the laser scanner 3 on the basis of distance between the center position of the laser scanner 3 and the second target 5, and acquires coordinates of the laser scanner 3 relative to a reference point on the basis of the coordinates of the first target 4 and the second target 5 relative to the reference point and the coordinates of the first target 4 and the second target 5 relative to the laser scanner 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a surveying system including a total station and a laser scanner that emits a laser beam for scanning and can measure the three-dimensional shape of a measurement object, a surveying method of the surveying system, and a mounting device.

Background Art

[0002] Conventionally, a technique for measuring the three-dimensional shape of a measurement object using a laser scanner has been known. In the measurement of the three-dimensional shape using a laser scanner, first, the laser scanner is installed at a known point whose coordinates have been specified in advance (for example, Patent Document 1). Then, a laser beam is emitted from the laser scanner installed at the known point toward the measurement object, scanning is performed in the horizontal and vertical directions, the laser beam reflected from the measurement object is received, and the three-dimensional shape of the measurement object is measured.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When measuring the three-dimensional shape of an object to be measured using a laser scanner as in Patent Document 1, first, it is necessary to accurately place the laser scanner at a position where the coordinates are specified in advance. Therefore, in the conventional surveying system 501 using a laser scanner, as shown in FIG. 7, first, for example, using the total station 2 installed at the reference point, the coordinates of the two first targets 4 and the second target 5 with respect to the reference point are measured, and using the laser scanner 3, by scanning the two first targets 4 and the second target 5, the coordinates of the two first targets 4 and the second target 5 with respect to the laser scanner 3 are measured. Thereafter, based on the coordinates of the two first targets 4 and the second target 5 with respect to the reference point and the coordinates of the two first targets 4 and the second target 5 with respect to the laser scanner 3, it is necessary to accurately measure the position of the laser scanner 3 with respect to the reference point in advance. Therefore, in the conventional surveying system 501, there is a problem that it takes time to measure the position of the laser scanner 3 because it is necessary to scan each of the two first targets 4 and the second target 5 using the laser scanner 3.

[0005] The present invention has been made paying attention to such problems, and an object thereof is to simplify the work of measuring the position of a laser scanner in three-dimensional surveying using a laser scanner.

Means for Solving the Problems

[0006] In order to solve such problems, the present invention has taken the following means.

[0007] That is, the target attachment structure according to the present invention is Laser scanner a target attachment structure including an attachment tool and a target, wherein the attachment tool is Laser scanner configured separately from the above, has a flat surface portion, two protruding portions protruding downward from the flat surface portion, and a target attachment portion formed on the upper surface of the flat surface portion, and a recess opened downward is formed by the flat surface portion and the two protruding portions, and the width of the recess is Laser scannerat the upper end of in a direction perpendicular to the longitudinal direction and parallel to the horizontal direction is substantially the same as the width, and the mounting device is configured to be attachable to the upper end of the Laser scanner from above the upper end such that the upper end is disposed inside the concave portion. Laser scanner It is characterized in that it is configured to be attachable to the upper end of the

[0008] In the present invention, the target can be easily attached to a laser scanner or a total station.

[0009] In the target mounting structure according to the present invention, a first positioning portion is formed at the upper end of the Laser scanner and a second positioning portion that can be fitted with the first positioning portion is preferably formed on the inner peripheral surface of the concave portion.

[0010] In the target mounting structure according to the present invention, when the target is attached to the upper end of the Laser scanner via the mounting device, it is preferable that the center position of the target in plan view coincides with the center position of the Laser scanner by fitting the first positioning portion and the second positioning portion.

[0011] In the target attachment structure according to the present invention, in a state where the target is attached to the target attachment portion, it is preferable that the target is configured to be rotatable with respect to the target attachment portion.

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

Advantages of the Invention

[0020] According to the present invention described above, the target can be easily attached to a laser scanner or a total station.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0023] (First Embodiment) As shown in FIG. 1, a surveying system 1 according to a first embodiment of the present invention includes a total station 2, a laser scanner 3, a first target 4, and a second target 5. The total station 2 is installed above a reference point (known point). The first target 4 is, for example, a reflector, and the second target 5 is, for example, a reflecting prism (360-degree reflecting prism).

[0024] The total station 2 emits distance-measuring light toward the first target 4 and the second target 5, and receives the reflected light reflected at the first target 4 and the second target 5. Thereby, the total station 2 can obtain the distances to the first target 4 and the second target 5 based on the number of oscillations of the light wave from emission to reception. Therefore, the total station 2 can obtain the coordinates of the first target 4 and the second target 5 with respect to the reference point.

[0025] The laser scanner 3 is, for example, a 3D laser scanner, which emits line laser light toward the measurement object, for example, in the vertical direction and the horizontal direction, and measures the distance to the measurement point by measuring the time for the laser pulse to travel back and forth between the measurement point of the measurement object and the sensor. Also, the laser scanner 3 can obtain the horizontal angle and the vertical angle of the measurement point with respect to the laser scanner 3 by measuring the direction in which the line laser light is emitted. Therefore, the laser scanner 3 can emit laser light for scanning, obtain the coordinates of the first target 4 with respect to the laser scanner 3, and measure the three-dimensional shape of the measurement object.

[0026] In the surveying system 1 of the present embodiment, as shown in FIG. 2, the second target 5 is disposed above the laser scanner 3 by the mounting device 10. The mounting device 10 is attached to the upper surface of the laser scanner 3. As shown in FIG. 3, the mounting device 10 has a rectangular flat portion 11, two protruding portions 12 protruding downward from the lower surface of the flat portion 11, and a cylindrical portion 13 protruding upward from the upper surface of the flat portion 11. The two protruding portions 12 are flat and are respectively disposed at the end portions on the long side of the lower surface of the flat portion 11. Therefore, a recess 16 is formed by the flat portion 11 and the two protruding portions 12. The longitudinal length of the two protruding portions 12 is substantially the same as the length of the upper end portion 3a of the laser scanner 3, and the width of the recess 16 (the distance between the two protruding portions 12) is substantially the same as the width of the upper end portion 3a of the laser scanner 3. A positioning convex portion 3A is formed on the upper end portion 3a of the laser scanner 3 so as to protrude, and a fitting concave portion 10A into which the positioning convex portion 3A is fitted is formed on the inner peripheral surface of the recess 16 of the mounting device 10. Therefore, when the mounting device 10 is disposed on the upper surface of the laser scanner 3 so that the upper end portion 3a of the laser scanner 3 is disposed inside the recess 16, the convex portion 3A is fitted into the fitting concave portion 10A, whereby the mounting device 10 is positioned with respect to the upper end portion 3a of the laser scanner 3.

[0027] When the mounting device 10 is disposed on the upper surface of the laser scanner 3, the upper end portion 3a of the laser scanner 3 supports the lower surface of the flat portion 11, whereby the flat portion 11 becomes horizontal. Long holes 12a extending in the longitudinal direction are respectively formed in the two protruding portions 12. In the two protruding portions 12, the two long holes 12a are formed at a distance from the lower surface of the flat portion 11 by the thickness of the upper end portion 3a of the laser scanner 3. With the lower surface of the flat portion 11 of the mounting device 10 supported by the upper end portion 3a of the laser scanner 3, the mounting member 12b is disposed inside the two long holes 12a. The mounting member 12b has substantially the same cross-sectional shape as the long hole 12a and is a member longer than the distance between the two protruding portions 12. The mounting member 12b is parallel to the lower surface of the flat portion 11 when disposed inside the two long holes 12a.

[0028] Therefore, with the lower surface of the flat portion 11 of the mounting device 10 supported by the upper end portion 3a of the laser scanner 3, when the mounting member 12b is disposed inside the long hole 12a, the upper end portion 3a of the laser scanner 3 disposed inside the concave portion 16 of the mounting device 10 is held by the lower surface of the flat portion 11 and the upper surface of the mounting member 12b. In this way, the mounting device 10 is mounted on the upper surface of the laser scanner 3. The central position of the cylindrical portion 13 of the mounting device 10 mounted on the upper surface of the laser scanner 3 coincides with the central position (reference position of the laser scanner 3) of the laser scanner 3 in plan view.

[0029] After that, the second target 5 is attached to the cylindrical portion 13 of the attachment device 10. A holding groove 5a having substantially the same shape as the cylindrical portion 13 is formed on the lower surface of the second target 5, and the cylindrical portion 13 of the attachment device 10 is attached so as to be disposed inside the holding groove 5a. The central position of the holding groove 5a coincides with the central position of the cylindrical portion 13 in plan view. Therefore, the central position of the second target 5 coincides with the central position of the laser scanner 3 in plan view. Thus, the central position of the second target 5 is disposed at a predetermined distance above the central position of the laser scanner 3. The distance (predetermined distance) between the central position of the second target 5 and the central position of the laser scanner 3 is preset according to the configuration of the attachment device 10 and the like. Therefore, the laser scanner 3 can obtain the coordinates of the second target 5 with respect to the laser scanner 3.

[0030] The surveying method of the surveying system 1 of the present embodiment will be described with reference to FIG. 4.

[0031] In the first step S1, the total station 2 emits distance measuring light to the first target 4 and the second target 5, respectively, receives the reflected light reflected by each of the targets 4 and 5, and measures the coordinates of the first target 4 and the second target 5 with respect to the reference point. The coordinates of the first target 4 and the second target 5 with respect to the reference point are measured in consideration of the height of the total station 2 (the distance between the reference point and the reference position or the central position of the total station 2).

[0032] In the second step S2, the laser scanner 3 emits a laser beam to scan the first target 4, and measures the coordinates of the first target 4 with respect to the laser scanner 3 (the reference position of the laser scanner 3).

[0033] In the third step S3, based on the distance between the center position of the laser scanner 3 and the second target 5, the coordinates of the second target 5 with respect to the laser scanner 3 are obtained. For example, in a plan view, when the position of the second target 5 coincides with the center position of the laser scanner 3, the height of the second target 5 is obtained based on the height of the laser scanner 3 (the height of the center position of the laser scanner 3) and the distance between the second target 5 and the center position of the laser scanner 3.

[0034] In the fourth step S4, based on the coordinates of the first target 3 and the second target 5 with respect to the reference point, and the coordinates of the first target 4 and the second target 5 with respect to the laser scanner 3, the coordinates of the laser scanner 3 (the reference position of the laser scanner 3) with respect to the reference point are obtained.

[0035] In the fifth step S5, the laser scanner 3 emits a laser beam to scan and measure the three-dimensional shape of the object to be measured.

[0036] The surveying system 1 of this embodiment is a surveying system including a total station 2 installed at a reference point and a laser scanner 3 that emits laser light for scanning and can survey the three-dimensional shape of a measurement object. The total station 2 emits distance measurement light to the first target 4 and the second target 5 installed at two locations, receives the reflected light reflected at each of the targets 4 and 5, and measures the coordinates of the first target 4 and the second target 5 with respect to the reference point. The laser scanner 3 has the second target 5, emits laser light for scanning to the first target 4, and measures the coordinates of the first target 4 with respect to the laser scanner 3. Based on the distance between the center position of the laser scanner 3 and the second target 5, the coordinates of the second target 5 with respect to the laser scanner 3 are acquired, and based on the coordinates of the first target 4 and the second target 5 with respect to the reference point and the coordinates of the first target 4 and the second target 5 with respect to the laser scanner 3, the coordinates of the laser scanner 3 with respect to the reference point are acquired.

[0037] The surveying method of the surveying system 1 according to this embodiment is as follows: The total station 2 installed at the reference point emits ranging light to the first target 4 and the second target 5 installed at two locations respectively, receives the reflected light reflected by each target 4, 5, and measures the coordinates of the first target 4 and the second target 5 with respect to the reference point in the first step (S1); the laser scanner 3 to which the second target 5 is attached emits laser light to the first target 4 for scanning, and measures the coordinates of the first target 4 with respect to the laser scanner 3 in the second step (S2); based on the distance between the center position of the laser scanner 3 and the second target 5, the coordinates of the second target 5 with respect to the laser scanner 3 are obtained in the third step (S3); based on the coordinates of the first target 4 and the second target 5 with respect to the reference point and the coordinates of the first target 4 and the second target 5 with respect to the laser scanner 3, the coordinates of the laser scanner 3 with respect to the reference point are obtained in the fourth step (S4); the laser scanner 3 emits laser light for scanning to measure the three-dimensional shape of the object to be measured in the fifth step (S5).

[0038] Thus, in the surveying system 1 and the surveying method of the surveying system 1 according to this embodiment, since the relative position of the second target 5 with respect to the laser scanner 3 does not change, in order to measure the coordinates of the second target with respect to the laser scanner 3, it is not necessary for the laser scanner 3 to emit laser light to the second target 5 for scanning. Therefore, in the three-dimensional surveying using the laser scanner 3, the surveying work of the position of the laser scanner 3 can be simplified.

[0039] In the surveying system 1 and the surveying method of the surveying system 1 according to this embodiment, the second target 5 is arranged at a predetermined distance above the center position of the laser scanner 3.

[0040] Thus, in the surveying system 1 according to this embodiment, the coordinates of the second target 5 with respect to the laser scanner 3 can be easily obtained.

[0041] The attachment device 10 of the present embodiment is used in the surveying system 1 of the present embodiment and the surveying method of the surveying system 1, and is configured to be attachable to the laser scanner 3 with the second target 5.

[0042] Accordingly, with the attachment device 10 of the present embodiment, the second target 5 that reflects the distance measuring light emitted from the total station 2 can be easily attached to the laser scanner 3.

[0043] (Second Embodiment) As shown in FIG. 5, a surveying system 101 according to a second embodiment of the present invention includes a total station 2, a laser scanner 3, a first target 4, and a second target 5. The total station 2 is installed above a reference point (known point). The first target 4 is, for example, a reflector, and the second target 5 is, for example, a reflecting prism (360-degree reflecting prism).

[0044] The total station 2 has the first target 4 attached thereto, emits ranging light toward the second target 5, and receives the reflected light reflected by the second target 5. Thereby, the total station 2 can obtain the distance to the second target 5 based on the number of oscillations of the light wave from emission to reception. Therefore, the total station 2 can determine the coordinates of the second target 5 with respect to the reference point. As shown in FIG. 5, the first target 4 is disposed above the total station 2 by the mounting fixture 10. The mounting fixture 10 has the same configuration as that of the first embodiment and is attached to the upper surface of the total station 2. Therefore, the total station 2 has an upper end portion that is substantially the same shape as the upper end portion 3a of the laser scanner 3, and the mounting fixture 10 is attached to the upper end portion of the total station 2. On the upper end portion of the total station 2, similarly to the upper end portion 3a of the laser scanner 3, positioning convex portions are formed so as to protrude, and the convex portions are fitted into the fitting concave portions 10A formed on the inner peripheral surface of the concave portion 16 of the mounting fixture 10, whereby the mounting fixture 10 is positioned with respect to the upper end portion of the total station 2. Further, on the lower surface of the first target 4, a holding groove having substantially the same shape as the cylindrical portion 13 is formed, and the cylindrical portion 13 of the mounting fixture 10 is attached so as to be disposed inside the holding groove of the first target 4. When the mounting fixture 10 is held at the upper end portion of the total station 2, the center position of the first target 4 supported by the mounting fixture 10 coincides with the center position of the total station 2 (the reference position of the total station 2) in plan view. Therefore, the center position of the first target 4 is disposed at a predetermined distance above the center position of the total station 2. The distance (predetermined distance) between the center position of the first target 4 and the center position of the total station 2 is preset according to the configuration of the mounting fixture 10 and the like. Therefore, the total station 2 can determine the coordinates of the first target 4 with respect to the reference point.

[0045] Total station 2 has a remote controller 2a. The remote controller 2a of the total station 2 is attached above a second target 5 disposed above the laser scanner 3. The total station 2 is provided with a mechanism that rotates such that when the remote controller 2a is operated, the portion (emission direction) that emits the distance measuring light of the total station 2 automatically faces the direction of the remote controller 2a. Therefore, when the first target 4 is attached to the upper end portion of the total station 2 by the attachment device 10, it is attached such that the direction of the reflecting surface of the first target 4 coincides with the direction of the portion that emits the distance measuring light of the total station 2. Further, after rotating in the direction of the remote controller 2a, the total station 2 automatically rotates to search for the 360-degree reflecting prism, and has a mechanism that is fixed in a state where the portion (emission direction) that emits the distance measuring light of the total station 2 faces the direction of the 360-degree reflecting prism.

[0046] The laser scanner 3 emits line laser light in, for example, the vertical and horizontal directions with respect to the object to be measured, and measures the time for the laser pulse to travel to and from between the measurement point of the object to be measured and the sensor, thereby obtaining the distance to the measurement point. Therefore, the laser scanner 3 can obtain the coordinates of the first target 4 with respect to the laser scanner 3. As shown in FIG. 5, the second target 5 is disposed above the laser scanner 3 by the mounting fixture 10. The mounting fixture 10 has the same configuration as that of the first embodiment and is attached to the upper surface of the laser scanner 3. When the mounting fixture 10 is held at the upper end portion 3a of the laser scanner 3, the center position of the second target 5 supported by the mounting fixture 10 coincides with the center position of the laser scanner 3 (the reference position of the laser scanner 3) in plan view. Therefore, the center position of the second target 5 is disposed at a predetermined distance above the center position of the laser scanner 3. The distance (predetermined distance) between the center position of the second target 5 and the center position of the laser scanner 3 is preset according to the configuration of the mounting fixture 10 and the like. As described above, although the remote controller 2a is attached above the second target 5, the center position of the remote controller 2a coincides with the center position of the second target 5 and the center position of the laser scanner 3 (the reference position of the laser scanner 3) in plan view.

[0047] The surveying method of the surveying system 101 of the present embodiment will be described with reference to FIG. 6.

[0048] In the first step S101, the total station 2 emits ranging light to the second target 5, receives the reflected light reflected by the target 5, and measures the coordinates of the second target 5 with respect to the reference point. The coordinates of the second target 5 with respect to the reference point are measured considering the height of the total station 2. When starting surveying by emitting ranging light from the total station 2, it is necessary to ensure that the reflecting surface of the second target 5 faces the direction of the total station 2. In this embodiment, an operator near the laser scanner 3 operates the remote controller 2a of the total station 2, causing the total station 2 to rotate so as to face the direction of the remote controller 2a. Then, it automatically rotates to search for the 360-degree reflecting prism, which is the second target 5, attached to the laser scanner 3. As a result, the part of the total station 2 that emits ranging light is fixed in a state facing the direction of the 360-degree reflecting prism. Therefore, the operator near the laser scanner 3 can perform surveying by emitting ranging light from the total station 2 to the second target 5 while remaining near the laser scanner 3 by operating the remote controller 2a.

[0049] In the second step S102, based on the distance between the central position of the total station 2 and the first target 4, the coordinates of the first target 4 with respect to the reference point are obtained. The coordinates of the first target 4 with respect to the reference point are measured considering the height of the total station 2 (the distance between the reference point and the reference position or the central position of the total station 2). For example, in a plan view, when the position of the first target 4 coincides with the central position of the total station 2, the height of the first target 4 is obtained based on the height of the total station 2 (the height of the central position of the total station 2) and the distance between the first target 4 and the central position of the total station 2.

[0050] In the third step S103, the laser scanner 3 emits laser light to scan the first target 4 and measures the coordinates of the first target 4 with respect to the laser scanner 3. As described above, when starting to emit laser light for scanning, it is necessary to ensure that the reflecting surface of the first target 4 faces the direction of the laser scanner 3. As a method, it is conceivable that an operator near the laser scanner 3 goes to the location of the first target 4 and rotates the first target 4 so that the reflecting surface of the first target 4 faces the direction of the laser scanner 3. However, especially when the distance between the laser scanner 3 and the first target 4 is far, this operation is very cumbersome. In contrast, in this embodiment, an operator near the laser scanner 3 operates the remote controller 2a of the total station 2, causing the total station 2 to rotate so as to face the direction of the remote controller 2a. Then, the total station 2 automatically rotates to search for the 360-degree reflecting prism, which is the second target 5 attached to the laser scanner 3. As a result, the part of the total station 2 that emits distance-measuring light is fixed in a state where it faces the direction of the 360-degree reflecting prism. As described above, when surveying is performed by emitting distance-measuring light from the total station 2 to the second target 5 in step S102, the part of the total station 2 that emits distance-measuring light is already in a state where it faces the direction of the 360-degree reflecting prism. Therefore, the part of the laser scanner 3 that emits laser light faces the direction of the first target 4 attached to the total station 2 in a plan view. An operator near the laser scanner 3 operates the laser scanner 3 to adjust the orientation in the height direction (the height of the emission direction) of the part of the laser scanner 3 that emits laser light, so that the reflecting surface of the first target 4 faces the direction of the laser scanner 3. Therefore, an operator near the laser scanner 3 can emit laser light from the laser scanner 3 to the first target 4 for scanning while staying near the laser scanner 3.Therefore, when starting scanning by emitting laser light, it is no longer necessary for the operator near the laser scanner 3 to go to the position of the first target 4 so that the reflecting surface of the first target 4 faces the direction of the laser scanner 3, improving the efficiency of the surveying work.

[0051] In the fourth step S104, based on the distance between the center position of the laser scanner 3 and the second target 5, the coordinates of the second target 5 with respect to the laser scanner 3 (the reference position of the laser scanner 3) are obtained.

[0052] In the fifth step S105, based on the coordinates of the first target 3 and the second target 5 with respect to the reference point and the coordinates of the first target 4 and the second target 5 with respect to the laser scanner 3, the coordinates of the laser scanner 3 (the reference position of the laser scanner 3) with respect to the reference point are obtained.

[0053] In the sixth step S106, the laser scanner 3 emits laser light to perform scanning and measures the three-dimensional shape of the measurement object.

[0054] The surveying system 101 of this embodiment is a surveying system including a total station 2 installed at a reference point and a laser scanner 3 that emits laser light for scanning and can survey the three-dimensional shape of a measurement object. The total station 2 has a first target 4, emits ranging light to a second target 5 respectively, receives the reflected light reflected by the target 5, and measures the coordinates of the second target 5 with respect to the reference point. The laser scanner 3 has the second target 5, emits laser light to the first target 4 for scanning, and measures the coordinates of the first target 4 with respect to the laser scanner 3. Based on the distance between the center position of the total station 2 and the first target 4, the coordinates of the first target 4 with respect to the reference point are obtained. Based on the distance between the center position of the laser scanner 3 and the second target 5, the coordinates of the second target 5 with respect to the laser scanner 3 are obtained. At the same time, based on the coordinates of the first target 4 and the second target 5 with respect to the reference point and the coordinates of the first target 4 and the second target 5 with respect to the laser scanner 3, the coordinates of the laser scanner 3 with respect to the reference point are obtained.

[0055] The surveying method of the surveying system 101 according to this embodiment is as follows: a total station 2 installed at a reference point and having a first target 4 attached thereto emits a ranging light to a second target 5, receives the reflected light reflected by the second target 5, and measures the coordinates of the second target 5 with respect to the reference point in a first step (S101); based on the distance between the total station 2 and the first target 4, obtains the coordinates of the first target 4 with respect to the reference point in a second step (S102); a laser scanner 3 having the second target 5 attached thereto emits a laser light to the first target 4 for scanning, and measures the coordinates of the first target 4 with respect to the laser scanner 3 in a third step (S103); based on the distance between the center position of the laser scanner 3 and the second target 5, obtains the coordinates of the second target 5 with respect to the laser scanner 3 in a fourth step (S104); based on the coordinates of the first target 4 and the second target 5 with respect to the reference point and the coordinates of the first target 4 and the second target 5 with respect to the laser scanner 3, obtains the coordinates of the laser scanner 3 with respect to the reference point in a fifth step (S105); and the laser scanner 3 emits a laser light for scanning to measure the three-dimensional shape of the object to be measured in a sixth step (S106).

[0056] Accordingly, in the surveying system 101 and the surveying method of the surveying system 101 of the present embodiment, since the relative position of the second target 5 with respect to the laser scanner 3 does not change, in order to measure the coordinates of the second target with respect to the laser scanner 3, it is not necessary for the laser scanner 3 to emit laser light onto the second target 5 and perform scanning. Further, since the relative position of the first target 4 with respect to the total station 2 does not change, it is not necessary to emit distance measuring light onto the first target 4 and measure the coordinates of the first target 4 with respect to the reference point. Therefore, in three-dimensional surveying using the laser scanner 3, the surveying work of the position of the laser scanner 3 can be simplified. Further, when the laser scanner 3 emits laser light onto the first target 4 and performs scanning, by using the automatic rotation mechanism of the total station 2, the direction of the first target 4 on the total station 2 can be automatically changed to the direction of the laser scanner 3. Therefore, the efficiency of the surveying work is improved.

[0057] In the surveying system 101 and the surveying method of the surveying system 101 of the present embodiment, the first target 4 is disposed at a predetermined distance above the center position of the total station 2, and the second target 5 is disposed at a predetermined distance above the center position of the laser scanner 3.

[0058] Accordingly, in the surveying system 101 of the present embodiment, the coordinates of the first target 4 with respect to the reference point can be easily obtained, and the coordinates of the second target 5 with respect to the laser scanner 3 can be easily obtained.

[0059] The mounting fixture 10 of the present embodiment is used in the surveying system 101 and the surveying method of the surveying system 101 of the present embodiment, and is configured to be able to mount the second target 5 on the laser scanner 3.

[0060] Accordingly, in the mounting fixture 10 of the present embodiment, the second target 5 that reflects the distance measuring light emitted from the total station 2 can be easily mounted on the laser scanner 3.

[0061] The embodiments of the present invention have been described above. However, the specific configurations of each part are not limited to the above-described embodiments only, and various modifications are possible without departing from the spirit of the present invention.

[0062] In the above first and second embodiments, the second target 5 is attached to the laser scanner 3 by the attachment device 10, but the second target 5 may be formed integrally with the laser scanner 3. The first target 4 is attached to the total station 2 by the attachment device 10, but the first target 4 may be formed integrally with the total station 2. In the above first and second embodiments, the second target 5 is disposed at a predetermined distance above the center position of the laser scanner 3, but the arrangement of the second target 5 with respect to the laser scanner 3 may be changed. Therefore, the second target 5 may be disposed other than above the center position of the laser scanner 3. In the above second embodiment, the first target 4 is disposed at a predetermined distance above the center position of the total station 2, but the arrangement of the first target 4 with respect to the total station 2 may be changed. Therefore, the first target 4 may be disposed other than above the center position of the total station 2.

[0063] In the above-described first and second embodiments, the case where the total station 2 is arranged at the reference point has been described. However, when the total station 2 is not arranged at the reference point, after specifying the position of the total station 2, assuming that the total station 2 is arranged at a known point, the coordinates of the laser scanner 3 with respect to the known point may be acquired. In the above-described first and second embodiments, an example of the mounting device 10 for mounting the second target 5 above the laser scanner 3 has been described. However, the configuration and mounting method of the mounting device 10 are not limited to this. Therefore, the mounting device 10 may be mounted at a position other than the upper end portions of the total station 2 and the laser scanner 3. The mounting device 10 is positioned with respect to the upper end portion 3a of the laser scanner 3 or the upper end portion of the total station 2 by fitting a positioning convex portion 3A formed at the upper end portion 3a of the laser scanner 3 or a positioning convex portion formed at the upper end portion of the total station 2 into a fitting concave portion 10A formed on the inner peripheral surface of the concave portion 16 of the mounting device 10. However, the configuration for positioning the mounting device 10 with respect to the total station 2 or the laser scanner 3 is not limited to this.

[0064] In the above-described first and second embodiments, an example of the surveying method of the surveying system has been described. However, in the first embodiment, the order of the first step S1, the second step S2, and the third step S3 may be a different order. In the second embodiment, the order of the first step S101, the second step S102, the third step S103, and the fourth step S104 may be a different order.

Explanation of Reference Numerals

[0065] 1, 101 Surveying system 2 Total station 3 Laser scanner 4 First target 5 Second target 10 Mounting device

Claims

A target mounting structure including a laser scanner, a mounting fixture, and a target, wherein the mounting fixture is configured separately from the laser scanner and has a flat portion, two protruding portions protruding downward from the flat portion, and a target mounting portion formed on the upper surface of the flat portion, and a recess is formed by the flat portion and the two protruding portions and opens downward; the width of the recess is substantially the same as the width in a direction perpendicular to the longitudinal direction of the upper end portion of the laser scanner and parallel to the horizontal direction; the mounting fixture is configured to be attachable to the upper end portion of the laser scanner from above the upper end portion of the laser scanner such that the upper end portion is disposed inside the recess. A target mounting structure characterized by this.

2. a first positioning portion is formed at the upper end portion of the laser scanner, and a second positioning portion that can be fitted with the first positioning portion is formed on the inner peripheral surface of the recess. The target mounting structure according to claim 1, characterized by this.

3. When the target is attached to the upper end portion of the laser scanner via the mounting fixture, the center position of the target and the center position of the laser scanner coincide in a plan view by fitting the first positioning portion and the second positioning portion. The target mounting structure according to claim 2, characterized by this.

4. In a state where the target is attached to the target mounting portion, the target is configured to be rotatable with respect to the target mounting portion. The target mounting structure according to any one of claims 1 to 3, characterized by this.

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