JPH04178513A - Level measuring method - Google Patents

Abstract

PURPOSE:To perform low-cost measurement by providing body being rotatable around a vertical shaft on each occasion of elevation by a unit height and horizontally irradiating with laser beams, a light receiver where a light receiving element to detect beams is located only in one spot, and a computer to record the height of a measuring unit at a moment when beams are inputted to the light receiver. CONSTITUTION:Light receivers 3 are installed in respective spots where height is continuously measured. However, since only one light receiving element 4 is used for the light receiver 3, even when the light receivers are arranged in a number of spots, this arrangement is not uneconomical. Even when a number of light receivers are located at an outdoor place where the light receiver is easily influenced by wind and air and temperature, maintenance is facilitated. A level measuring unit L is located in a position where the light receivers 3 can be surveyed, and a rise by an unit height and rotation are effected as laser beams are emitted. In which case, the rise and rotation are not effected simultaneously but the rise is stopped at intervals of a specified height and rotation is effected in subsequence to the rise. When beams are inputted to some element 4, a signal is brought into an ON-state and inputted to a computer 6 through a scanner 5.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a leveling method.

, Conventional state-of-the-art surveying is a method in which a horizontally installed telescope is used to read numerical values on a leveling rod installed at a measuring point, and the height is calculated from the difference between the numerical values at multiple measuring points.

Automatic leveling systems have been developed as a way to automate these tasks.

This method uses a surveying instrument that emits a laser beam, and a leveling rod that is equipped with a light sensing function.

<Problems to be Solved by the Invention> However, the leveling rod S used therein has a structure in which a large number of laser beam receiving elements R are vertically arranged as shown in FIG.

At the site, a large number of leveling rods S are left in place for a long period of time, as shown in Figure 3.

When surveying, a leveling device that emits a laser beam is used, and when this laser beam hits one of the many elements R, the height of the laser beam is determined by the output from that element R. It's a method.

For this reason, the leveling rod S having a structure in which a large number of light receiving elements R are arranged is extremely expensive.

Therefore, it is extremely uneconomical to leave the expensive leveling rod S installed at many measurement points for a long period of time.

<Objective of the present invention> The present invention was made to improve the above-mentioned problems, and an object of the present invention is to provide a method that can perform leveling with a laser beam using an inexpensive leveling rod.

<Means for Solving the Problems> In other words, the present invention provides a level that can be raised and lowered, is rotatable around a vertical axis for each rise and fall of a unit height, and is capable of horizontally irradiating a laser beam. The surveying instrument body,
This leveling method consists of a light receiver that has a light receiving element installed only at the IN location to detect this laser beam, and a computer that stores the height of the water meter at the moment when the laser beam is manually applied to the light receiving element. 8.Description of the present invention: The present invention will be described in detail below.

・'A> Leveling instrument The leveling instrument used in the present invention is composed of a laser beam emitter 1 and an automatic lifting device 2.

As the laser beam emitter 1, a conventionally known laser level device having a level setting function can be used.

On the other hand, the automatic lifting device 2 is a device that raises and lowers the laser beam emitter 1 in units of height while rotating it.

For example, the unit height is 1 mm, and after rotating 360 degrees at a constant height, it rises by 1 mm, and at that position it rotates 360 degrees.
It has a structure that rotates 0 degrees.

This lifting height is set to, for example, 100 cm or more.

Exit〉Receiver The light receiver 3 is a leveling rod having only one light receiving element 4.

This light receiving element 4 can detect the laser beam emitted from the laser beam emitter 1.

When this light beam is detected, a signal is output to the scanner 5,
The scanner is configured to send a signal to the personal computer 6.

Kuha〉Computer Personal computer 6 used in the system of the present invention
, one leveling instrument and a plurality of light receivers 3 are connected.

When a signal from the light receiving element 4 of any of the light receivers 3 is input, the height of the leveling instrument at that moment can be stored.

Every time signals from a plurality of light receivers 3 are input, all the heights of the leveling device at that moment are stored.

<How to use> Next, a leveling method using the above device will be explained.

・A. Placement of the light receiver The light receiver 3 of the present invention is installed at the point where the height is to be continuously measured.

Since this light receiver 3 uses only one light receiving element 4 as described above, it is extremely inexpensive compared to conventional devices, and is not particularly uneconomical even when placed at many locations. do not have.

Furthermore, since it has a simple structure with only one light receiving element 4,
Maintenance is easy even when a large number of them are installed outdoors, where they are easily affected by wind, rain, and temperature.

<Exit> Leveling The leveling instrument described above is installed in a position where all the light receivers 3 can be seen.

Then, while emitting a laser beam, it ascends by unit height and rotates.

Rather than raising and rotating at the same time, the robot rotates 360 degrees while stopping at a certain height, then stops rotating, raises by a unit height, and rotates 360 degrees again.

・C.・Height detection When such a laser beam is input to the light receiving element 4 of Araka, a signal is turned ON and is input to the personal computer 6 via the scanner 5 for the light receiver.

The height of the leveling device at the moment when the light receiving element 4 receives the laser beam is also input into the personal computer 6 at the same time.

Therefore, if you convert from the reference height, the receiver 3
It is possible to know the height of a certain point by setting the height.

<Effects of the Present Invention> Since the present invention is as described above, the following effects can be achieved.

(A) A light receiver using only one light receiving element can detect a laser beam and measure the height.

Therefore, since the light receivers are inexpensive, even if a large number of light receivers are installed, automatic surveying can be carried out economically.

/ Because the structure of the receiver is simple and can be installed at multiple points, there is no risk of failure even if it is placed outdoors where it is easily affected by wind and rain, making it suitable for long-term continuous management use. There is.

[Brief explanation of drawings]

Figure 1: Explanatory diagram of the surveying method of the present invention Figure 2: Illustration of a conventional leveling rod Figure 3: Explanation of how to use a conventional laser level

Claims (1)

[Claims] (1) A leveling instrument body that can be raised and lowered, rotated around a vertical axis for each unit height raised and lowered, and capable of emitting a laser beam horizontally, and a light receiver that detects this laser beam. A leveling method consisting of a light receiver with an element installed in only one location and a computer that stores the height of the leveling device at the moment the laser beam enters the light receiving element.