JPH0743155A - Beam receptor - Google Patents

Abstract

PURPOSE:To easily record a precise light receipt mark to a material to be measured at measurement. CONSTITUTION:A beam receptor has light detecting elements 14, 14' for receiving a laser beam L emitted from a beam emitter; a light position detecting circuit 21 for outputting a specified light position detection signal S when the laser beam is coincident with a standard position preset in the receptor; and a printer driving circuit 23 and printer device 15 for recording a light receipt mark on a material 4 to be measured on the basis of the light position detection signal S. At marking operation, the light receipt mark is automatically written on the material 4 to be measured only by moving the beam receptor about around the laser beam emitting area by a worker.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for setting a construction standard such as a direction and a horizontal position in construction surveying, and particularly to a light beam such as a laser beam emitted from a surveying instrument (beam emitter). The present invention relates to a beam receiver for receiving (hereinafter referred to as a beam) and recording a light receiving mark as a construction standard on an object to be measured.

[0002]

2. Description of the Related Art Prior to construction, in construction surveying to set reference points such as the reference direction and horizontal position, in recent years, special beams such as laser beams have been used to improve the work efficiency and setting accuracy. The survey instrument used is

FIG. 8 is a diagram showing an example of horizontal position survey using a laser beam survey system. This system mainly includes a beam light emitter (laser planar) 1 that emits a laser beam L parallel to the ground G (or floor surface) and a beam light receiver 2 that receives the laser beam L. As a usage method, first, the beam light emitter 1 is fixed to a predetermined height on the ground by a tripod 3 or the like, and then the beam light emitter 1 is operated to irradiate the laser beam L horizontally on the ground G.

On the other hand, on the side of the light receiver 2, an operator (not shown) moves the body of the light receiver 2 onto the object to be measured 4 in accordance with the pointing direction (for example, an arrow mark) displayed on the display portion 2a of the light receiver 2. (Or in the vicinity thereof), it is moved up and down, and when the reference position provided on the light receiver 2 and the center of the laser beam L coincide with each other,
The light receiver 2 is fixed on the object to be measured 4, and the light receiving mark M is written on the object to be measured 4 using the writing instrument P. In addition, in connection with such a surveying system using the laser beam L, a marking mechanism is incorporated in the light receiver main body, and an operator who confirms the laser beam collation operates a button to write a light reception mark on the DUT. A beam receiver that can be used is already known (Japanese Utility Model Publication No. 3-93720).

[0005]

However, in order to accurately match the reference position set in the photoreceiver with the center of the laser beam, the operator carefully observes the display section of the photoreceiver. The main body must be finely adjusted and moved, and its operation requires skill. Furthermore, even after the laser beam and the reference position match, the operator must record the received light mark on the object to be measured with a writing instrument while maintaining this state, and this series of operations can be performed smoothly. In a work environment where it is hard to be disturbed (high places, narrow places, etc.), it may be difficult to write the light receiving mark accurately. The present invention is to solve the above problems,
An object of the present invention is to provide a light receiver capable of recording an accurate light receiving mark (reference point) on an object to be measured without requiring the operator to be skilled and without being restricted by the working environment. .

[0006]

A first beam receiver according to the present invention receives a beam emitted from a beam emitter and emits light when the beam is emitted to a preset reference position in the receiver. An optical position detecting means for outputting a position detection signal,
Marking means for recording a light-receiving mark at a predetermined position on the object to be measured based on the light position detection signal is provided.

A second beam receiver of the present invention comprises an optical position detecting means for receiving a beam and outputting an optical position detection signal,
Display means for displaying the relative positional relationship between the beam and the light receiver based on the light position detection signal, and based on the light position detection signal output when the beam is irradiated to the reference position preset in the light receiver Marking means for recording a light receiving mark at a predetermined position on the object to be measured is provided.

[0008]

When the reference position provided in the beam receiver coincides with the beam from the beam emitter, the light position detecting means of the light receiver outputs a specific light position detection signal. The marking means records the light receiving mark on the object to be measured based on the light position detection signal.

[0009]

The present invention will be described below with reference to illustrated embodiments. FIG. 1 is an external perspective view of a laser beam receiver (hereinafter, abbreviated as a light receiver) which is an embodiment of the present invention, and FIG. 2 is a partial vertical sectional view thereof. 1 and 2, various types of operation keys 11 such as a power switch for turning on / off the operation of the light receiver, and bubbles for confirming the inclination of the light receiver main body 10 with respect to the ground and the object to be measured are provided in the light receiver main body 10. A tube 12 is provided.

In the vicinity of the operation key 11, a light receiving window 1 for receiving a laser beam emitted from a beam light emitter (not shown, but having the same structure as the conventional device shown in FIG. 8).
3 is provided. A photodetector element (photodiode) 14 that is vertically divided into two parts with a reference position B set in the photodetector as a boundary is incorporated in the light receiving window 13, and each photodetector element 14 emits a laser beam. A photoelectric conversion signal (analog signal) having a size corresponding to the incident area is output. Note that the above-described division form of the photodetector 14 is applied to, for example, detection of a construction standard in a one-dimensional direction such as a level, and in the case of detecting a construction standard in a two-dimensional direction. The light receiving window 13 is divided into upper, lower, left and right quadrants.

A printer device 15 for recording a light-receiving mark at a predetermined position on the object to be measured 4 is integrally provided on the back surface of the light receiver facing the object to be measured 4 (FIG. 3) such as a wall surface. As shown in FIG. 2, the printer device 15 includes a cartridge type ink holder 16, an ink chamber 17 for storing ink supplied from the ink holder 16, and an ink chamber 1.
The jet nozzle 18 is provided at the other end of the jet nozzle 7 and is positioned at the same height as the reference position B. Further, a piezoelectric element 19 is provided on the opposite side of the jet nozzle 18. The piezoelectric element 19 expands when a voltage is applied and abruptly increases the ink pressure in the ink chamber 17, thereby ejecting an ink droplet i to the DUT 4 through the jet nozzle 18. The voltage control for the piezoelectric element 19 is performed by the microcomputer 2 incorporated in the light receiver main body 10.
Controlled by 0.

FIG. 3 shows a circuit configuration of the present photodetector including the microcomputer 20. Each of the upper and lower photodetector elements 14 and 1
From 4 ', photoelectric conversion signals s1 and s2 are output. That is, the photoelectric conversion signal s1 is transmitted to the photodetector element 14 located above.
The photoelectric conversion signal s2 is output from the photo-detecting element 14 'located below. These photoelectric conversion signals s
1 and s2 are optical position detection circuits 2 that constitute the microcomputer 20.
Input to 1 respectively. The light position detection circuit 21 performs a process of comparing the magnitudes of the photoelectric conversion signals s1 and s2 input as described above, and outputs the light position detection signal S corresponding to the magnitude relationship to the CPU 22.

The photodetector elements 14 and 14 'have photoelectric conversion signals s1 and s2 having a magnitude corresponding to the incident area of the laser beam.
Therefore, the optical position detection signal S output from the optical position detection circuit 21 is
Photodetector 14, 14 'with respect to the center of the laser beam
Is the division boundary of (that is, the reference position B) at a high position,
There are three types of signals, that is, a low position or the center of the laser beam coincides with the division boundary. In the present embodiment, the above-mentioned photo-detecting element 14 and photo-position detecting circuit 21 constitute a photo-position detecting means.

The CPU 22 discriminates the kind of the optical position detection signal S input in this way, and when a signal indicating that the center of the laser beam and the reference position B in the light receiver coincide is input, the printer drive circuit. The printer drive signal D is output to 23. The printer drive circuit 23 receives the piezoelectric element 19 of the printer device 15 based on the printer drive signal D.
A predetermined voltage is applied to the ink chamber 17 and the ink pressure in the ink chamber 17 rises sharply and an ink droplet i is ejected to the object to be measured 4. Therefore, in the present embodiment, the printer drive circuit 23 and the printer device 15 constitute marking means.

As described above, according to this embodiment, only when the reference position B in the optical receiver coincides with the center of the laser beam,
Since the light receiver 10 is configured to automatically eject the ink droplet i to the predetermined position of the DUT 4, the operator does not need to check the relative positional relationship of the light receiver body 10 to the laser beam one by one. It is possible to easily record the light receiving mark on the DUT 4 simply by moving the light receiver main body 10 up and down around the approximate beam irradiation area. Also, due to this automatic ink ejection, it is not necessary for the operator to monitor the relative positional relationship in the vicinity of the light receiver, so it is possible to operate the light receiver away from the worker by using auxiliary tools etc. For example, in high places and narrow places,
Even in a working environment where it is difficult for an operator to handle the light receiver, the reference point can be easily and accurately recorded on the object to be measured. In this embodiment, since the inkjet type printer device 15 is equipped as the marking means, there is an advantage that the material and surface roughness of the object to be measured 4 are not affected as compared with other marking means.

FIG. 4 is an external perspective view of the beam receiver 10 according to the second embodiment of the present invention. With respect to each embodiment of the present invention described below, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. In the light receiver according to the first embodiment, the printer device is integrally incorporated into the main body thereof, whereas in the second embodiment, the printer device 15 includes the set screw 24 with respect to the light receiver main body 10.
It is detachably installed.

This is based on the assumption that the construction standard is marked at a fixed distance d from the position of the light receiver 10 which receives the laser beam L, as in the construction survey shown in FIG. In this case, the light receiver main body 10 and the printer device 15 are respectively fixed to the connector 25, and the reference position B on the light receiver main body 10 side and the inkjet position on the printer device 15 side are arranged with a distance d therebetween. The light receiver main body 10 and the printer device 15 are electrically connected to each other via a cable 26, and immediately when the center of the laser beam L and the reference position B coincide with each other, the printer device 15 immediately outputs the object to be measured 4. A light-receiving mark M is recorded for.

The light receiver 10 in each of the above-mentioned embodiments is
Of the three types of optical position detection signals S, the printer device 15 is driven based on a specific optical position detection signal output when the reference position B in the light receiver coincides with the center of the laser beam. As a modified example, like the conventional beam receiver, a display unit showing the relative positional relationship between the reference position B and the laser beam may be provided. FIG. 6 shows a beam receiver 10 according to a third embodiment of the present invention, which is provided with a liquid crystal display unit 27 on the front surface of the light receiver, the liquid crystal display unit 27 showing the positional relationship of whether or not the receiver is at a high position with respect to the laser beam. FIG. 7 is an external perspective view, and FIG. 7 is a circuit block diagram of the beam receiver 10.

The circuit of the photodetector 10 according to this embodiment is shown in FIG.
In addition to the components shown in FIG.
7 is added, the CPU 21 outputs the printer drive signal D, and also outputs the signal E for driving the display drive circuit 28 according to the type of the optical position signal S output from the optical position detection circuit 21, The display drive circuit 28 instructs the display 27 by the drive signal E whether the light receiver main body 10 should be moved upward or downward toward the coincidence between the reference position B and the laser beam. Output the signal to be displayed. As for the modified example of the third embodiment, the printer device 15 may be detachable from the main body of the light receiver 15.

Although the present invention has been described by taking each beam receiver for recording the reference point in the one-dimensional direction as an example, the beam receiver according to the present invention is not limited to these embodiments. It may be for the purpose of recording reference points in the two-dimensional direction. Further, the marking means is not limited to the inkjet printer device 15 shown in the figure, and any printing method such as transfer using an ink ribbon may be used.

[0021]

As described above, according to the present invention, since the construction standard can be recorded without relying on any artificial judgment or operation, it is possible to always carry out construction surveying accurately and with little variation regardless of the skill level of the operator. Becomes Further, by omitting the manual judgment, the main body of the light receiver can be remotely operated away from the operator, and accurate and quick marking can be performed even in a restricted environment.

[Brief description of drawings]

FIG. 1 is an external perspective view of a beam receiver according to a first embodiment of the present invention.

2 is a partial cross-sectional view of FIG.

3 is a block diagram showing a circuit configuration of the beam receiver of FIG.

FIG. 4 is an external perspective view of a beam receiver according to a second embodiment of the present invention.

5 is a diagram showing a usage example of the light receiver of FIG.

FIG. 6 is an external perspective view of a beam receiver according to a third embodiment of the present invention.

7 is a block diagram showing a circuit configuration of the beam receiver of FIG.

FIG. 8 is a diagram showing an example of a horizontal survey using a conventional beam emitter and receiver.

[Explanation of symbols]

 4 Measured object 10 Beam receiver 14 Photodetector 15 Printer device 20 Microcomputer 21 Optical position detection circuit 22 CPU 23 Printer drive circuit 27 Display unit 28 Display unit drive circuit B Reference position L Laser beam M Light reception mark S Optical position detection signal

Claims (4)

[Claims] 1. A beam receiver for receiving a beam emitted from a beam emitter, the beam receiver receiving the beam,
Light position detecting means for outputting a light position detection signal when the beam is irradiated to a preset reference position in the light receiver, and a light receiving mark at a predetermined position on the object to be measured based on the light position detection signal. And a marking means for recording the beam. 2. A beam receiver for receiving a beam emitted from a beam emitter, the optical position detecting means for receiving the beam and outputting an optical position detection signal, and based on the optical position detection signal. Display means for displaying the relative positional relationship between the beam and the light receiver, and on the object to be measured based on the light position detection signal output when the beam is irradiated to a reference position preset in the light receiver. A beam receiver, comprising: a marking means for recording a light-receiving mark at a predetermined position. 3. The light position detecting means and the marking means are integrally provided, and a position where the light receiving mark is recorded coincides with the reference position.
Or the beam receiver according to 2. 4. The method according to claim 1, wherein at least a part of the marking means is detachably provided on the light receiver main body, and the light receiving mark can be recorded at a position apart from a reference position. Beam receiver.