JPH0356813A - Surveying machine equipped with centripetal device having centripetal position shift monitoring function - Google Patents

Abstract

PURPOSE:To easily check a shift in the centripetal point of the surveying machine and to obtain survey data after the shift is corrected by outputting a signal corresponding to the position of the centripetal point from an image pickup unit. CONSTITUTION:A centripetal device 1 is constituted by providing a half-mirror 6 to an optical system which forms a collimation axis aligned with the axis of rotation of a machine and an image of the centripetal point divided by the half-mirror 6 and a focus plate cross line or center circle are formed on the image pickup unit 7 through an objective 8 for the image pickup unit. The centripetal point image formed at a position corresponding to the centripetal position of the photodetection area of the unit 7 is scanned horizontally and vertically and its output is converted by an image processing unit 9 into a video signal, which is sent to a monitor TV 10. Further, signals which specify the horizontal and vertical positions of the photodetection area of the unit 7 are generated and outputted to the personal computer 13 of a data recorder 11. Further, when the measurement data of the surveying machine 13 is inputted to the personal computer 13, the survey data after the deviation quantity of the centripetal point is corrected if the centripetal point shifts from a fixed point is obtained.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to measurements that require continuous observation such as fixed point observation of crustal deformation (landslides), dam embankment positioning, etc. This invention relates to a surveying instrument equipped with a centripetal device.

(Conventional technology) When continuously measuring changes in the dam body or deformation such as landslides (crustal deformation!) & U measurements, distance meters (total stations) are installed at two fixed points, and prisms are installed on the dam body. Then, the position of the prism is measured by trilateration, and the deformation of the dam body is measured by the deviation of the prism position.

However, the distance meters (total stations) installed at two fixed points may also shift in position due to changes in the ground, and in that case, errors will occur in trilateration. Therefore, in the above-mentioned observations that required high-precision observations, the centripetal point of the surveying instrument was checked periodically (every few days, for example), recorded, and corrections were made to the observation results later. .

(Problem to be Solved by the Invention) The above-mentioned centripetal point check consists of an eyepiece a, a focus plate b1, an objective lens C, and a roof prism d, as shown in FIG.
This is done by looking through a centripetal telescope (centripetal device), which is made up of

The present invention aims to solve these conventional problems.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a surveying instrument equipped with a centripetal device consisting of a visual confirmation optical system. The present invention is characterized in that an imaging unit for monitoring the deviation is provided, and a display means for displaying the position of the centripetal point is connected to the imaging unit. A computer may be connected to the imaging unit. The computer removes the influence of centripetal deviation from the imaging unit output signal and survey instrument observation data taken into the computer. Preferably, a signal transmission line such as a telephone line is connected to the computer.

(Function) Since the imaging unit outputs a signal corresponding to the position of the centripetal point, the display means uses this signal to display the image of the centripetal point and the position of the focusing plate crosshair or center circle of the centripetal device,
The deviation of the centripetal point can be determined from its position. When you connect a computer to the imaging unit, the computer
Determination of the centripetal point from the imaging unit output signal and survey instrument observation data. '． ' The influence of a +m position shift can be corrected. (Example) An example of the present invention will be described below with reference to the drawings.

FIG. 1 shows an optical path diagram of a centripetal device of a surveying instrument according to the present invention.

In the figure, a visual confirmation optical system is composed of a Dano prism 2, an objective lens 3, a focusing plate 4, and an eyepiece 5.
Forms a collimation axis that coincides with the machine's axis of rotation. This optical system is provided with a half mirror 6, and the image of the centripetal point divided by the half mirror 6 and the focus plate crosshair or center circle are imaged onto the imaging unit 7 by the imaging unit objective lens 8. An optical system is provided. On the other hand, the configuration is such that the centripetal point can also be observed through the eyepiece lens 5 as in the past. The imaging unit 7 is connected to a monitor television 10 and a data recorder 11 via an image processing unit 9, as shown in FIG.

This data recorder 11 is an analog recorder L2 shown in FIG. 3, a personal computer 13, or a digital data recorder (not shown), which accumulates data,
It is a display device.

The image processing unit 9 converts the output signal of the imaging unit 7 into a video signal for the monitor television 10 and a recording signal for the data recorder 11.

To explain the operation based on FIG. 3, the centripetal point image formed at the position corresponding to the centripetal point position of the light receiving area of the imaging unit 7 is transmitted in the horizontal direction (X direction) by the horizontal/vertical driver circuit 14. The signal is then scanned in the vertical direction (Y direction), and is output as an electrical signal from the imaging unit 7 and sent to the sampling and holding circuit 15. The signal sampled by the sampling and holding circuit 15 is amplified and A/D converted by the signal processing circuit 16, and sent to the matrix encoder circuit 17, where it is converted into a video signal and displayed on the monitor television 10. It will be projected. Yota, sampling hold circuit 1
The signal output from 5 is divided by the horizontal/vertical position dividing circuit 18 into the horizontal direction (
The digital signal DX%Dy specifies the position in the X direction) and the vertical direction (Y direction), is A/D converted, and is output to the personal computer 13.

Further, the digital signal output from the horizontal/vertical position dividing circuit 18 is converted into an analog signal by the horizontal/vertical analog signal converting circuit 19, and is input to the analog recorder 12 and recorded. If necessary, the computer 13
Signal transmission line 20 such as a telephone line or telemeter line
can be used to send a digital signal to a receiver at a location other than the survey instrument installation point. Furthermore, if the computer 13 is configured to input the survey data of the surveying instrument 22 manually, when the centripetal point deviates from a fixed point, survey data corrected for the amount of deviation can be obtained.

In FIG. 3, 21 is a horizontal/vertical driver circuit 14;
This is a timing signal generation circuit that controls the operation timing of the sampling hold circuit 15, the signal processing circuit 18, and the matrix encoder circuit 17.

A digital data recorder may be used instead of the computer.

(Effects of the Invention) Since the present invention has the above-described configuration, it is possible to easily check the deviation of the centripetal point of the surveying instrument, and it is also possible to obtain survey data with this deviation corrected. have an effect.

[Brief explanation of drawings]

Fig. 1 is an optical path diagram of a centripetal device with a centripetal deviation monitoring function of the present invention, Fig. 2 is a line diagram of an embodiment of the present invention equipped with the centripetal device, Fig. 3 is a block diagram thereof, and Fig. 4 is a diagram. FIG. 2 is an optical path diagram of a centripetal device in a conventional surveying instrument. 1... Centripetal device 8... Imaging unit 9... Image processing unit 10... Monitor TV l1... Data recorder 12... Analog recorder i3... Personal computer Patent application Person Sokkishari Co., Ltd. Person Kin Kitamura 1.4
3 other people ゛゛2゛

Claims (1)

[Claims] 1. In a surveying instrument equipped with a centripetal device consisting of a visual confirmation optical system, the centripetal device is provided with an imaging unit for monitoring deviation of the centripetal point from a fixed position, and the imaging unit is equipped with a centripetal A surveying instrument equipped with a centripetal device with a centripetal position deviation monitoring function, characterized in that a display means for displaying the position of a point is connected. 2. In a surveying instrument equipped with a centripetal device consisting of a visual confirmation optical system, the centripetal device is provided with an imaging unit for monitoring the deviation of the centripetal point from a fixed position, and a computer is connected to the imaging unit. The computer is equipped with a centripetal device with a centripetal position deviation monitoring function, which removes the influence of the deviation of the centripetal point from a fixed point position from the survey instrument observation data taken into the computer by the imaging unit output signal. Surveying machine. 3. A surveying instrument equipped with a centripetal device with a centripetal position deviation monitoring function according to claim 2, characterized in that a signal sending line such as a telephone line is connected to the computer.