JP2916781B2 - Surveying instrument equipped with a centripetal device with a centripetal position deviation monitoring function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention provides a centripetal function with a centripetal displacement monitoring function that can be used for measurements that require continuous observation such as fixed-point observations such as crustal deformation (landslides) and dam embankment displacement. The present invention relates to a surveying instrument equipped with a device.

(Conventional technology) When performing deformation measurement such as change of dam body or landslide (crustal deformation) observation continuously, a distance meter (total station) is installed at two fixed points, and a prism is installed on the dam body, The position of the prism is measured by triangulation, and the deformation of the dam embankment is measured by the displacement of the prism position. However, the distance meter (total station) installed at two fixed points may be displaced due to a change in the ground or the like, and in such a case, an error occurs in three-sided surveying. Therefore, in the above-mentioned observations that require high-precision observations, the centripetal points of the surveying instrument are checked periodically (for example, every few days), recorded, and the observation results are corrected later. .

(Problem to be Solved by the Invention) The above-mentioned centripetal point check looks through a centripetal telescope (centripetal device) composed of an eyepiece a, a reticle b, an objective lens c and a roof prism d as shown in FIG. However, there is a problem that the operation is troublesome and the operation efficiency is low.

An object of the present invention is to solve such a conventional problem.

(Means for Solving the Problems) As described in claim 1, in a surveying instrument provided with a centripetal device composed of a visual confirmation optical system, imaging for monitoring a deviation of a centripetal point from a fixed point position in the centripetal device. A computer connected to the imaging unit, which removes the influence of the deviation of the centripetal point from the fixed point position from the surveying instrument observation data taken into the computer by the imaging unit output signal. It is characterized by the following. It is preferable that a signal transmission line such as a telephone line be connected to the computer.

(Operation) The imaging unit outputs a signal corresponding to the position of the centripetal point, and when this output signal is input to a computer connected to the imaging unit, the deviation of the fixed point position of the centripetal point from the output signal and the survey observation data is obtained. Observation data with the effect corrected can be obtained. This observation data can be transmitted from the signal transmission line to a receiver at a location different from the surveying instrument installation point, if necessary.

Embodiment An embodiment 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 of the present invention. In FIG. 1, the roof prism 2, the objective lens 3, the reticle 4, and the eyepiece 5 constitute a visual checking optical system, and form a collimating axis coinciding with the rotation axis of the machine. In this optical system, a half mirror 6 is provided, and an image of a centripetal point and a reticle cross line or a center circle divided by the half mirror 6 are imaged by an imaging unit objective lens 8 into an imaging unit 7.
An optical system to be imaged thereon is provided. On the other hand, it has a configuration in which the centripetal point can be observed through the eyepiece 5 as before. 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.

The data recorder 11 is an analog recorder 12, a personal computer 13 or a digital data recorder (not shown) shown in FIG. 3, and is a device for accumulating and displaying data.

The image processing unit 9 generates the video signal for the monitor television 10 and the recording signal of the data recorder 11 from the output signal of the imaging unit 7. The operation will be described with reference to FIG. 3. The centripetal point image formed at a position corresponding to the centripetal point position of the light receiving area of the imaging unit 7 is horizontal and horizontal.
Scanning is performed in the horizontal direction (X direction) and the vertical direction (Y direction) by the vertical driver circuit 14, output as an electric 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 a signal processing circuit 16, sent to a matrix encoder circuit 17, converted into a video signal by the matrix encoder circuit 17, and then converted by the monitor television 10 to a video signal. It is projected. The signals output from the sampling hold circuit 15 are converted into digital signals Dx and Dy for specifying the horizontal (X direction) and vertical (Y direction) positions of the light receiving area of the imaging unit 7 by the horizontal / vertical position dividing circuit 18. And output to the personal computer 13. The digital signal output from the horizontal / vertical position division circuit 18 is converted into an analog signal by the horizontal / vertical analog signal conversion circuit 19, input to the analog recorder 12, and recorded. If necessary, a digital signal can be transmitted from the computer 13 to a receiver at a location different from the surveying instrument installation point using a signal transmission line 20 such as a telephone line or a telemeter line. Also, if the computer 13 is made to input the survey data of the surveying instrument 22, when the centripetal point deviates from the fixed point, survey data in which the deviation is corrected can be obtained.

In FIG. 3, reference numeral 21 denotes a timing signal generation circuit for controlling the operation timing of the horizontal / vertical driver circuit 14, the sampling and holding circuit 15, the signal processing circuit 16, and the matrix encoder circuit 17.

(Effect of the Invention) Since the present invention has the above-described configuration, it is possible to obtain survey data in which the deviation of the centripetal point of the survey instrument has been corrected,
Also, there is an effect that the survey data can be sent to a receiver at a place different from the surveying instrument.

[Brief description of the 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 diagram of an embodiment of the present invention provided with the centripetal device, FIG. 3 is a block diagram thereof, and FIG. It is an optical path diagram of the centripetal device in the conventional surveying instrument. DESCRIPTION OF SYMBOLS 1 ... Centripetal device 8 ... Imaging unit 9 ... Image processing unit 10 ... Monitor television 11 ... Data recorder 12 ... Analog recorder 13 ... Personal computer

Claims (2)

(57) [Claims] In a surveying instrument provided with a centripetal device including a visual confirmation optical system, an image pickup unit for monitoring a deviation of a centripetal point from a fixed point position is provided in the centripetal device, and a computer is connected to the image pickup unit. Wherein the computer removes the influence of the deviation of the centripetal point from the fixed point position from the surveying instrument observation data taken into the computer by the imaging unit output signal. Surveying instrument equipped with. 2. A surveying instrument equipped with a centripetal device with a centripetal position deviation monitoring function according to claim 1, wherein a signal transmission line such as a telephone line is connected to said computer.