JPS63153420A - Method and device for detecting installing position of cross section measuring instrument - Google Patents

Abstract

PURPOSE:To easily detect an installing position of a measuring instrument by supporting a cross section measuring instrument so as to be movable in parallel, adjusting a supporting surface of a supporting means so as to become horizontal, turning a measuring wave emitting angle of the cross section measuring instrument to directly below, and aligning a visible light beam to a reference point by moving in parallel the supporting means. CONSTITUTION:A transmitting part 4 of a measuring head 3 is set so as to become horizontal, and subsequently, the measuring head 3 is rotated by 90 deg., and the transmitting part is turned directly below. In this state, an X-Y table 11 is moved, and moved to a position where a visible light beam irradiates the center of a dowel D. In this case, a measuring instrument 1 can be moved, while holding the parallelism, however the X-Y table 11 is moved, and when the visible light beam irradiates the center of the dowel D, an installing position of the measuring instrument 1 can be detected easily from the dowel D. That is to say, a height position can be detected by measuring the height to the dowel D by the measuring instrument 1 itself, and also, by the dowel D, a position in the cross section horizontal direction can be detected.

Description

Detailed Description of the Invention Industrial Application A The present invention emits a measurement wave such as a laser pulse, a light wave, an ultrasonic wave, or a laser, and a visible light beam for detecting a measurement position,
The present invention relates to a position detection method and apparatus for detecting the installation position of a cross-section measuring device that measures distance from the velocity of a measurement wave that hits and reflects an object.

The above-mentioned type of measuring device is often used as a cross-sectional measuring device for measuring the cross-section of a four-branched tunnel, the cross-section of a slope, etc. One of these types of measuring instruments is to emit a laser pulse riding on a wave of invisible light towards the object to be measured, and then calculate the average value of the velocity of the reflections that hit the object and calculate the distance to the object. What to detect is already known. In this case, the measuring device has a measuring head that emits and receives laser pulses attached to the axis of the measuring device body, and can perform measurements by rotating up to 360 degrees at predetermined angles around this axis.

That is, the measuring head can measure every predetermined angle and can perform this measurement until it makes one rotation. Thereby, the cross-sectional shape of the tunnel, etc. can be measured.

Therefore, by using the above-mentioned measuring device, the cross-sectional shape of a predetermined position can be measured in a short time, which is extremely advantageous.

However, even if this measuring instrument is installed at an appropriate position and the cross-sectional shape can be detected, it cannot be determined whether the cross-sectional shape matches the design drawing. Therefore, in order to match the cross-sectional shape with the design drawing, it was necessary to detect the position where the measuring device was installed.

However, in the past, it was difficult to easily and accurately know the installation location of the measuring device, and it took a lot of time just to detect it.

The present invention attempts to solve this problem.

As a method for achieving the above object, the present invention supports a cross-section measuring instrument on support means that can be moved in parallel, adjusts the support surface of the support means to be horizontal, and after adjustment, The device is characterized in that the measurement wave emitting angle of the cross-section measuring device is directed directly downward, and the supporting means is moved in parallel to align the visible light beam with a reference point. The support means is characterized in that it is comprised of an abutment that can be adjusted so that the support surface is horizontal, and a support table that is disposed on the abutment and that is movable in parallel.

11 cases of arrows- Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, 1 is a cross-section measuring instrument, and this measuring instrument 1
This will be explained in detail using FIG.

As shown in FIGS. 1 and 2, the measuring device 1 includes a measuring device main body 2 and a measuring head 3 rotatably attached to the main body around a support shaft (not shown). There is. The measurement head 3 includes a transmitting section 4 that emits a measurement wave composed of a large number of laser pulses on a wave of invisible light, a receiving section 5 that receives the laser pulse reflected by the object to be measured, and a receiving section 5 that receives the laser pulse reflected by the object to be measured. A projection section 6 is provided that projects visible light, for example, a laser beam, parallel to the laser pulse emitted by the section 4 at a predetermined interval. In this case, the measurement position of the measuring device can be visually confirmed by the laser beam from the projection unit 6.

The measuring instrument 1 described above is supported by support means. As shown in FIG. 1, the support means in this embodiment includes a first support 8 on which three legs 7 are attached, each having an adjustment part 7a whose length can be adjusted. A second abutment 10 provided on the stand 8 via an adjustment bolt 9;
A support table serving as an X-Y table 11 is attached to a support base 10. In this case, a level (not shown) is attached to the first support and the second support 10 to detect whether the support surfaces thereof are horizontal. Further, the above-mentioned measuring instrument 1 is placed on the X-Y table 11 so as to maintain highly accurate parallelism.

The installation position detection device of the definitive measuring instrument 1 is configured as described above.Next, a method for detecting the installation position when measuring a cross section in a tunnel using the device will be explained.

When digging a tunnel, a mold called a center is set behind the face and concrete is poured. In order to set this mold work, it is necessary to survey the cross section of the tunnel, and for this reason, a reference point called a so-called dowel is provided on the bottom surface of the tunnel at the setting position. Further, these dowels are provided at each point as necessary, and their positions are determined by surveying. That is, the position of the dowel can be recognized in advance by surveying.

In the present invention, first, the above-mentioned device is installed near the dowel D as shown in FIG. At this time, the measuring head 3 of the measuring instrument is set toward the dowel D side, and the main body 2 is set horizontally.

That is, the adjustment unit 7a is operated and adjusted using a spirit level so that the support surface of the first support 7 is horizontal. Next, the support surface of the second abutment 10 is leveled using a spirit level. By performing the horizontal adjustment twice in this way, the second support 10
can be leveled with high precision.

Thus, if the support surface of the second abutment 10 becomes horizontal,
- Since the table surface of the Y table 11 is parallel to the second support 10, the main body of the measuring instrument 1 is also horizontal. Therefore, the measuring head 3 is set so that the transmitting part 4 is horizontal, and then the measuring head 3 is rotated 90 degrees so that the transmitting part 4 faces directly below. Then, the X-Y table 11 is moved to a position where the visible light beam hits the center of the dowel D. At this time, the measuring instrument 1 can be moved while maintaining parallelism no matter how many rows the X-Y table 11 is moved, and if the visible light hits the center of the dowel D, the installation position of the measuring instrument 1 is from the dowel D. Easily detectable. That is, the Tabo D is determined by the measuring instrument 1 itself.
The height position can be detected by measuring the height up to the dowel D.
The position in the horizontal direction of the cross section can be detected by

In this way, the installation position of the measuring device 1 can be detected from the tab D using the measuring device 1 itself. Note that the dowel D has been used to detect the installation position in the past as well. However, in the past, this was done using a transit system, which required a lot of time to measure even in tight spaces while looking through a telescope. On the other hand, in the present invention, the installation position can be detected using a measuring device as described above, so the detection can be carried out in an extremely short time of 2 to 3 minutes. Immediately after the detection, the measuring head 3 is
By rotating it, you can get a cross section of the tunnel.

Note that although the visible light beam and the measurement wave are out of alignment, the width of the deviation is fixed, so it is only necessary to correct it by the amount of the deviation.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified in various ways. For example, the cross section measuring device may use light waves, ultrasonic waves, or laser light as the measurement wave. Note that for those that do not use visible light, such as ultrasonic waves, a standard light beam may be attached.

Further, the reference points are not limited to dowels, and any number of rows of reference points can be used as long as they indicate the reference position.

Furthermore, the measuring device is applicable not only to cross sections of tunnels but also to various measurements such as civil engineering and construction.

- According to the present invention, as described above, the installation position of the measuring device can be easily detected using the measuring device.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a perspective view showing an example of a measuring instrument used in the present invention, and FIG. 3 is a perspective view showing an aspect at the time of detection. 1... Measuring instrument 2... Measuring instrument body 3...
Measuring head 8...First support 10...Second support 11...X-Y table procedure amendment (,. February 4, 1988)

Claims (5)

[Claims] (1) Cross-sectional measurement in which a measurement wave such as a laser pulse, light wave, ultrasonic wave, or laser and visible light for detecting the measurement position are emitted, and the distance is measured from the speed of the measurement wave that hits the object and is reflected. In a position detection method for detecting the installation position of a device, the cross section measuring device is supported on support means that is movable in parallel, the support surface of the support means is adjusted to be horizontal, and after adjustment,
An installation position detection method characterized by directing the measurement wave emitting angle of the cross-section measuring device directly downward and moving the supporting means in parallel to align visible light with a reference point. (2) Cross-sectional measurement in which a measurement wave such as a laser pulse, light wave, ultrasonic wave, or laser and visible light for detecting the measurement position are emitted, and the distance is measured from the speed of the measurement wave that hits the target and is reflected. A position detection device for detecting the installation position of a device, comprising support means for supporting the cross section measuring device,
The above-mentioned detection device, wherein the support means comprises a support that can be adjusted so that the support surface is horizontal, and a support table that is disposed on the support and that can be moved in parallel. (3) The detection device according to claim 2, wherein the cross section measuring device emits an invisible measurement wave and a visible light beam parallel to the measurement wave with a predetermined interval. (4) The measurement wave of the cross section measuring device is visible light,
The detection device according to claim 2, wherein the visible light beam also serves as a visible light beam for detecting a measurement position. (5) The detection device according to claim 2, wherein the support table is an XY table.