JPS6118812A - Automatic displacement measuring apparatus - Google Patents

Abstract

PURPOSE:To obtain outomatically a displacement of a specimen, by installing an apparatus causing optical wave telemeter and transit to be oriented automatically in the direction of an object subject to measurement and measuring and calculating changes of the angles of transit and distance of the object. CONSTITUTION:Transit 1 and optical wave telemeter 2 are made to swivel by a depression angle swivelling apparatus 3. A pulse signal from the telemeter 2 is reflected by a reflecting mirror 4 installed on a specimen 10 to be measured. The transit 1 is oriented in the position where the light quantity of the reflected light becomes maximum. A distance between the object 10 and the transit 1 and horizontal angle and depression angle of the transit at this moment are measured at this moment. From this measured values and reference values, a displacement of the object 10 are calculated by a computer 6. The result of these calculations are introduced to another computer 7. By this process, a displacement of the object 10 can be measured and this method can be applied even to a hazardous working site.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a displacement measuring device that measures and records the movement of a measured object over time using a light wave distance meter and a transit.

[Prior art and its problems]

Conventionally, in order to measure the movement of the ground to predict the displacement of structures and landslides, etc. Alternatively, the required values were calculated using trigonometry, and the required values were calculated based on this data. However, these surveying methods were laborious and took time to obtain calculation results. However, it was difficult to detect changes in displacement over time.There were problems such as the location where the object to be measured was installed on the ground where landslides were likely to occur, and it was dangerous for workers to enter. [Purpose of invention] The present invention is not a problem in the conventional measurement method. By detecting displacement from changes and outputting measured values electrically, we can improve measurement accuracy and simplify the labor required for measurement, and by monitoring all displacements from a remote location, we can safely measure the measured values at the same time.

We provide an automatic displacement measuring device that can input 0 to other computers as electrical signals.

[Structure of the invention]

The present invention relates to a transit equipped with a light wave distance meter and a device for driving in elevation and horizontal directions using a pulse motor, a control device that controls the pulse motor based on a reflected light amount signal from the light wave distance meter, and a control device. Automatic displacement measurement system consisting of a computer attached to the unit that electrically outputs signals such as elevation angle, horizontal angle, distance, etc. to the outside using electric signals from the outside and also performs calculations, and a reflector attached to the foot to be measured. It is a device.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating the configuration of a displacement measuring device.

Transcilla to the displacement measuring device 8) 1. It is composed of a control device 5 equipped with an X-actuator 6 and a reflector 4, and the transit 1 is equipped with a light wave distance meter 2 and a pulse-driven
Elevation/elevation/rotation equipment ft3'e is provided with all four mowers for elevating, elevating and turning the transit 1. Lightwave distance meter 2
The reflecting mirror 4 has a spherical surface, is attached to a fixed position on the object to be measured 10, and reflects the light emitted from the light-wave distance meter 2 to the light-wave distance meter 2 correctly. Furthermore, the transit 1 has a control device 5.
will be established. The control device 5 inputs the reflected light amount signal from the optical distance meter 2, converts this signal into a pulse signal, and outputs it to the above-mentioned elevation and rotation device [4]. In the elevating/elevating device 4, a motor is driven by a pulse signal to cause the entire transit 1 to elevate/elevate. In addition, the control device 5 is equipped with a computer 6, and the computer 6 analyzes the signal of the amount of reflected light that changes due to the elevation and turning movement of the transit l, calculates the direction in which the amount of reflected light is maximum, and calculates the direction in which the amount of reflected light is maximum. The control device 5 controls the transit 1 so as to fix the transit 1. Furthermore, the computer 6 records over time the elevation and rotation angle and the distance at the measured object 101 when the transit 1 is fixed. It also includes a device for transmitting the value to other computers 7.

[For production]

The function and measuring method of the displacement measuring device 8 will be explained below.

In Figure 2, the reference position P of the transit 11 measurement point
. , and a reflecting mirror 4 is attached to the object 10 to be measured. This reference position P. The position of the object to be measured 10 with respect to the distance f is measured by the optical distance meter 2. , and the horizontal angle θ□ indicated by the third elevation/swivel device. The calculator 6Vc records the elevation angle θvo. Next, when the object to be measured 10 moves, the light wave distance meter 2 follows the movement of the object to be measured 10, and the total calculation unit 6 moves the position where the amount of light reflected from the reflector 4 is maximum.
Analyze by 1tc Since the surface of this reflecting mirror 4 is spherical, when the light from the optical distance meter 2 points to the center of the reflecting mirror 4, the amount of reflected light becomes maximum, that is, the transit 1 correctly points the direction of the object to be measured 10. Since the instruction is given, the distance, horizontal angle θMl, elevation angle θv1 at this time are recorded in the calculator 6.

As described above, the reference position [Po and the measured object 10
By measuring and recording the distance, elevation angle, and horizontal angle, the moving distance and moving direction of the foot to be measured 10 over time can be determined.

'EtThis displacement measuring device 8 can also perform measurements by operating the computer 6 in response to command signals from other computers 7, and can also output the measured recorded values to the other computers 7 for display and display.
It can be used for analysis and self-recording.

〔Effect of the invention〕

This device uses light to dynamically measure and record the displacement of a measured object, and can accurately measure the direction and distance, as well as instantaneously and continuously output the measured values to other computing devices. It can significantly reduce the amount of time required for surveying, and can be widely used for dangerous measurements such as ground movement to predict the displacement of structures and landslides.

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating the configuration of the displacement measuring device, and FIG. 2 is a diagram illustrating the measuring method.

Claims (1)

[Claims] A transit equipped with a light wave distance meter and a device driven by a pulse motor in the vertical and horizontal directions, a control device that controls the pulse motor based on a reflected light amount signal from the light wave distance meter, and a device that is attached to the control device and is connected to an external device. An automatic displacement measurement device consisting of a computer that electrically outputs signals such as elevation angle, horizontal angle, distance, etc. to the outside and records the calculations, and a reflector attached to the object to be measured.