JP2000055660A - Laser three-dimensional survey instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser three-dimensional survey instrument at a high speed in which a designation of a measuring point and a measuring are can be simply carried out without using a reflection prism. SOLUTION: In a survey instrument, a non-prism light wave meter 1 requiring no reflection prism is loaded on a base 8 and when a surveying point 19 designated from a picture from a CCD camera for monitoring a three-dimension measurement area is ordered by a mouse, an irradiation laser beam 11 is automatically irradiated to a designated surveying point 19 by controlling X, Y axis deviation scanners 5A, 5B having an angle-measuring function by a controller 13 to determine a distance and an angle of X and Y. The X, Y, and Z of a measuring point are determined from these distances and angles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a non-prism light wave meter which does not require a reflection prism, two cameras for photographing a measurement area and the vicinity of a point to be measured, and the like. When a measurement location or a measurement range is designated with a mouse, a laser beam is automatically applied to the designated location or measurement area to perform three-dimensional measurement. The present invention also relates to a laser three-dimensional surveying instrument capable of displaying a survey result on a screen and printing out the result.

[0002]

2. Description of the Related Art In a conventional distance measuring and angle measuring device, the direction of a measuring point where a reflecting mirror is installed is visually confirmed in advance, and the surveying device is pointed in that direction to look into a collimator built in the measuring device. Fine adjustment in the survey direction. Therefore, it was very difficult for a worker who needs glasses or the like to work while looking into the collimator.

[0003] Further, when there are a plurality of surveying locations, it is necessary to carry out surveying by the above-described method each time, so that there is a problem that surveying time is required.

In addition, since this method is difficult to continuously measure, there is a problem that it is not suitable for an island view, a sectional view, a sloping map, a soil volume calculation, and the like, which are necessary for civil engineering management.

In 1996, a system was developed in which a non-prism light wave meter equipped with two cameras was turned in the X and Y directions by a motor to display three-dimensional terrain such as a developed land. There is still a problem that surveying takes time because of turning. In addition, although two cameras are mounted, it is difficult to confirm the surveying points with the camera because the camera is away from the laser optical axis, and there is a problem that accuracy is lowered.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and does not require a reflecting prism at the time of three-dimensional surveying. Measurement points and measurement areas can be easily set while looking at the two camera screens that capture the surroundings, and three-dimensional data is read at high speed, and the structure is relatively simple.
Another object of the present invention is to provide a laser three-dimensional surveying instrument that is easy to handle and maintain.

[0007]

As a means for solving the above-mentioned problems, a laser three-dimensional surveying instrument of the present invention emits light from a non-prism light wave meter which is a light wave meter which does not require a reflector installed on a gantry. A mirror for deflecting the laser beam in the X and Y directions, a scanner for deflecting the deflecting mirror at high speed, a CCD camera for collimating a target, a CCD camera for monitoring a three-dimensional measurement area, and measuring a laser beam from a non-prism optical wavemeter. A light splitter for irradiating a point and reflecting the reflected light to a non-prism optical wavemeter and a target collimating CCD camera, and a swing angle control of a mirror and a deflection mirror for efficiently reflecting an optical path of laser irradiation light and reflected light. For distance data analysis from a non-prism lightwave meter, for target collimation, and for a three-dimensional measurement area monitor
It is configured by providing a controller with a display for displaying an image from the D camera.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a system configuration diagram of the present invention, FIG. 2 is a laser head configuration diagram, FIG. Indicates the laser scanning direction. Figure 5 shows the automatic level method.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a laser head 10 mounted on a tripod mount 9 shown in FIG.
The irradiation laser beam 11 emitted from the non-prism optical wavemeter 1 provided on the base 8 of the first embodiment passes through the optical splitter 2 and the fixed reflection mirror 3 and strikes the X-axis deflection mirror 4A, and passes through the Y-axis deflection mirror 4B. Then, the light is irradiated toward the object to be measured on the front surface of the laser head 10.

The laser beam reflected from the object to be measured enters the Y-axis deflecting mirror 4B, passes through the X-axis deflecting mirror 4A and the fixed reflecting mirror 3, and the incident laser beam is split by the optical splitter 2.
When the light is branched into the non-prism light wave meter 1 and the collimating CCD camera 7, the measurement distance is output from the non-prism light wave meter 1 to the controller and the collimated CCD camera 7 displays an image around the optical axis of the irradiated laser beam. It is captured.

The controller 13 appropriately controls the swing of the reflection mirrors 4A and 4B while observing the images of the three-dimensional measurement area monitoring CCD camera 6 and the collimating CCD camera 7 to determine the position of the measurement point and the measurement area. The control for the determination is performed. FIG. 2 shows two scanners 5A and 5A.
B is shown.

[0012] A CCD for a three-dimensional measurement area monitor
The images of the camera 6 and the collimating CCD camera 7 are displayed as a three-dimensional measurement area image 15 and a collimating image 16 on the display of FIG.

An X, Y inclinometer 20 is provided on the base 8 so that the X and Y deflecting mirrors 4A and 4B perform corrections in accordance with the horizontal inclination θx and the vertical inclination θY of FIG. Features are also added.

The zooming and focusing of the two cameras are performed by control keys of a controller.

Next, a description will be given of a surveying method using this laser three-dimensional surveying instrument. In FIG. 1, the laser head 10 on the gantry 9 is directed in the direction of the object to be measured, and an image covering the measuring range is displayed on the display of FIG. Using the control key 18, the zoom of the CCD camera 6 for monitoring the three-dimensional measurement area is adjusted and projected. Next, the cursor 17 on the display is designated with the control key 18 to designate a measurement point or a measurement area. On the other hand, in the scanners 5A and 5B synchronized with the cursor 17, the deflection mirrors 4A and 4B are changed so that the laser is irradiated in the direction specified above, and the image around the laser irradiation is projected as the collimation image 16. Therefore, fine adjustment of the desired measurement point or measurement area is performed using the cursor 17 while looking at the collimation image 16 again.

Next, when the control key 18 for starting the measurement is pressed, the coordinates of the measurement point designated by the cursor are obtained from the non-prism lightwave meter 1, the output distance and the angles in the X and Y directions from the deflection mirrors 4A and 4B and displayed. And is secured in the memory in the control. On the other hand, when the measurement area is designated, the two scanners 5A and 5B are automatically controlled, and the survey point 1 is sequentially moved as shown in FIG. 4 to perform the three-dimensional survey in the designated area.

[0017]

According to the laser beam irradiation method of the present invention described above, since a reflecting prism is not required, the number of workers can be reduced to half compared with the conventional surveying method, and the surveying work can be performed. This has the effect of shortening the time.

Further, since there is no need to install a reflecting prism at the surveying point, there is an effect that it is possible to easily perform coordinate surveying in a dangerous zone or a high place where no one can enter.

Further, since the surveying point collimation can be performed while looking at the screen, there is an effect that the worker who needs a sleep mirror can easily collimate.

Further, since a plurality of workers can collimate while watching the screen, there is an effect that survey errors are reduced.

Further, since the X and Y scanners use galvanometers, high-speed surveying is possible and the working time can be shortened, so that the working efficiency is significantly improved.

Further, since the automatic level correction method using the tilt sensor is used, there is an effect that the installation is simplified.

In addition, the view of the island, the sectional view, and the slope required for the civil engineering management can be output from the survey result by the display and the printer, so that there is an effect that the working capacity is drastically improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a system in an embodiment that performs three-dimensional surveying with a non-prism by applying the method of the present invention.

FIG. 2 is an internal configuration diagram of the laser head of the present invention.

FIG. 3 shows a video monitor of a survey point or a survey range and a display for giving a survey instruction.

FIG. 4 is a laser scan diagram showing a moving direction of an irradiation laser.

FIG. 5 is an automatic leveling method of a laser pad having a built-in inclination sensor.

[Explanation of symbols]

 1. Non-prism light wave meter 2. Optical splitter 3. Fixed reflection mirror 4A. X-axis deflection mirror 4B. Y-axis deflection mirror 5A. X-axis deflection mirror with angle measurement function 5B. 5. Y-axis deflection mirror with angle measurement function 6. CCD camera for 3D measurement area monitor 7. Collimated CCD camera Base 9 Mount 10. Laser head 11. Irradiation laser beam 12. Incident laser beam 13. Controller 14. Display 15. 13. Three-dimensional measurement area image Collimation image 17. Cursor 18. Control key 19. Surveying point 20. X, Y inclinometer 21. Horizontal inclination θX 22. Vertical method tilt θY

Claims (2)

[Claims] 1. A non-prism optical wavemeter which does not require a reflecting prism, and a laser beam emitted from the non-prism optical wavemeter is applied to a reflecting mirror mounted on the axes of an X-axis rotator and a Y-axis rotator with an angle measuring function. A CCD camera 6 for photographing the actual scene of the three-dimensional measurement area and a CCD camera 7 for photographing the actual scene around the laser beam hitting the object to be measured via the optical splitter on the laser optical axis of the non-prism optical wavemeter. A laser three-dimensional surveying instrument comprising a controller for synchronizing the deflection angles of the X-axis gyro with an angle measuring function and the Y-axis gyro with the movement of a cursor on the video monitor of the camera 6 and performing fine adjustment on the image of the camera 7. 2. An X, Y inclination sensor is provided on a base 8 in the laser three-dimensional surveying instrument, and two X and Y axes mounted on the axes of an X, Y axis swivel unit having an angle measuring function according to the inclination. A laser 3D surveying instrument with an automatic level that corrects the level by controlling the deflection angle of the deflection mirror with a controller.