JPH07311036A - Method for eliminating error due to inclination of laser-level beam sensing rod for measuring height, distance and angle by one person - Google Patents

Abstract

PURPOSE:To enable errors due to the inclination of a beam sensing rod to the eliminated by rocking the beam sensing rod back and forth and right and left to find the minimum figure of its height, and either displaying that minimum figure on the beam sensing rod or recording it. CONSTITUTION:If beam sensing rods 2, which use a series of beam sensing pieces 3 arranged lengthwise in a line to sense a level position and determine heights H H1, H2 according to that position, are inclined longitudinally or horizontally as shown by the beam sensing rods 2-3, 2-4, then the heights H1, H2 sensed and indicated by the inclined beam sensing rods 2-3, 2-4 are at greater figures than the height H of the beam sensing rod 2 that is set plumb. That is, if the height H is at a minimum figure, then the beam sensing rod 2 is set plumb properly. Then the minimum figure is found by rocking the beam sensing rod 2 back and forth and right and left, and that figure is either displayed 9 on the beam sensing rod 2 or recorded, whereby errors due to the inclination of the beam sensing rod 2 can be eliminated.

Description

Detailed Description of the Invention

[0001]

[Industrial application] The present invention is horizontal, distance and angle in civil engineering, construction and surveying.

[0002]

2. Description of the Related Art In conventional leveling, two persons, a person who operates the level and a person who has a staff are required, but recently, the laser level has been used.
It is very convenient because the leveling can be done manually by the person. As shown in Fig. 1, the laser light is emitted by rotating the laser light horizontally. Only at the position of the light-sensing rod 2 to be sensed, one person is good enough to raise and lower the light-receiver 10 and adjust it to the height of light to perform leveling.

[0003]

However, the conventional photodetector 10 which adjusts the height of the light with the light receiving rod 2 of the laser level is used.
It is necessary to perform the delicate work of up and down, and if the light receiving rod 2 is not erected vertically, an inclination error will occur. In Figs. 2 and 3, the conventional laser level is improved and the horizontal height H to the light receiving rod 2 is increased. , Horizontal distance A, A1, A2, moving angle E, etc. are displayed, but tilt error still occurs if the light receiving rod 2 is not erected vertically. The present invention eliminates this tilt error.

[0004]

[Means for solving the problems] First, the surveying method that is an improvement of the conventional laser level surveying will be explained with reference to FIGS. FIG. 2 shows a light-receiving piece 3 for sensing horizontally rotating light.
4 rows of F rows and G rows are continuously arranged vertically on the light receiving rod 2, one of the light receiving pieces 3 senses the horizontal position, and the height H is known from the position of the light receiving piece to determine the horizontal height H. Is displayed on the light receiving rod 2,
Since the light receiving pieces 3 are continuous, there is no need to move the light receiving device 10 up and down as in the conventional case. The ejector 1 horizontally emits light (hereinafter, the same applies to other things such as laser light, light waves, etc.) while rotating, and the rotating light is detected by the F-row light-receiving piece 3 of the light-receiving rod 2 to know the time. , The light moves to the light receiving element 4 in the G row, detects the light again, and calculates the time from 3 to 4, because the time for one rotation of the light is fixed, 3 to 4
The angle C is obtained when the moving time to is known. The interval B between the light-receiving piece rows F and G is determined. Therefore, if the angle C and the interval B are known, from the injection machine 1 to the light-receiving rod 2 by the mathematical formula. The horizontal height H and the distance A are displayed on the light receiving rod 2 because the distance can be calculated. FIG. 3 illustrates that the light-receiving rod 2-1 has moved to the angle 2-2 by the angle E, and that the moving angle is calculated and displayed. Two light beams are emitted while horizontally rotating. There are injection machines 7 and 8. The light of the injection machine 7 is detected by the light receiving piece 4, and the light of 8 is detected by the light receiving piece 5.
The rotation speeds of the horizontally rotating lights 7 and 8 are assumed to be different, the rhythm of detecting the lights with the light receiving pieces 4 and 5 is read, the positions of the light receiving rods 2-1 and 2-2 are specified, and the movement angle E is calculated. And display it on the light receiving rod. Next, the arrival rhythms of the two lights and the position identification will be described with reference to FIG. 5. The rotation speed of the rotary light emitting machine 7 is 10 seconds, and the rotation speed of 8 is 20 seconds. Assuming that 7 and 8 lights are emitted at the same time from the 0-degree position, the light-receiving rhythm at the 90-degree position is 2.5 seconds (Ilo), 7.5 seconds (Roh), and 10 seconds in the right diagram of FIG. Seconds (high), and at the 180 degree position, 5 seconds
F), 5 seconds (Heart), 10 seconds (Toe), 270 degrees at 7.5 seconds (Lee), 2.5 seconds (Nour), 10
The position can be specified by knowing the light-receiving rhythm in seconds (rules), 0 seconds or 360 degrees, and 10 seconds (near) and 10 seconds (heach). FIG. 4 shows how the length of the light-receiving rod 2 is expanded and contracted. The light-receiving pieces 3 are arranged vertically in a row, and the light-receiving piece 3 senses the horizontal position. A light receiving rod for displaying the height H on the light receiving rod 2. As described above, the horizontal height H, the distances A, A1, A2 and the angle E are displayed on the light receiving rods 2, 2-1 and 2-2, but the light receiving rods 2-3 and 2-4 in FIG. An error will occur if there is a tilt in the front, rear, left and right as shown in the figure. There is a feature that the number is larger than the height H. By utilizing this feature, the light receiving rod 2 is rocked back and forth, left and right to find the minimum number, and the number is displayed on the light receiving rod 2 and the error is recorded. You can lose it. In Fig. 7, the light-receiving surface of the light-receiving rod 2 is rotating to the right with respect to the light source 1, and in Fig. 9, the light-receiving surface is rotating to the left. There is a characteristic that the numbers of the angles C1 and C2 detected by the tilted light receiving surface are smaller than the angle C when the front is peeled as shown in FIG.
By using this feature, you can eliminate the error by rotating the light-receiving surface to the left and right to find the maximum number and displaying it on the light-receiving bar 2 or recording it. When the minimum number is displayed by shaking the light-receiving rod 2 in FIG. 6 back and forth, an electronic sound is generated, and as shown in FIG. 8, the light-receiving surface is rotated left and right to generate an electronic sound when the maximum number is displayed. Things can make the work easier.

[0005]

[Action]

[0006]

[Practical example]

[0007]

【The invention's effect】

1 The tilt error of the light receiving rod can be eliminated. 2 The measurement results with no error can be recorded on a magnetic card and the recording can be read by a computer to automate surveying work and drawing.

[Brief Description of Drawings]

FIG. 1 is a perspective view showing conventional laser leveling.

FIG. 2 is a perspective view for explaining a surveying method for displaying horizontal and distance by sensing the light of the horizontal rotary light emitting machine 1.

FIG. 3 is a perspective view illustrating a surveying method for detecting the light of the horizontal rotary light emitting devices 7 and 8 and displaying the horizontal, distance and angle.

FIG. 4 is a light-receiving rod 2 that senses rotating light to display horizontal height.
Perspective view of

[FIG. 5] Explanatory diagram of light arrival rhythm and position identification

FIG. 6 is an elevation view of the light emitting device 1 and the light receiving rod 2 for explaining a method of eliminating an error in which the light receiving rod 2 is tilted to the front, rear, left and right.

FIG. 7 is a plan view of the light emitting device 1 and the light-receiving rod 2 for explaining that the light-receiving surface of the light-receiving rod rotates to the right to display an error.

FIG. 8 is a plan view of the light emitting device 1 and the light-receiving rod 2 for explaining that the light-receiving surface of the light-receiving rod faces the front for correct display.

FIG. 9 is a plan view of the light emitting device 1 and the light receiving rod 2 for explaining that the light receiving surface of the light receiving rod rotates to the left to display an error.

[Explanation of symbols]

1,7,8. → Horizontal rotating light emitting machine (laser level) 2,2-1,2-2,2-3,2-4 → Receiving rod 3,4,5 → Receiving piece 6 → Leg 9 → Calculating height, distance and angle To display or record 10 → Light receiver A, A1, A2 → Distance from light emitting device to light receiving rod B → Distance between light receiving piece rows F and G vertically arranged in two rows C, C1, C2 → light Is the angle E moved from the F row to the G row E → the angle at which the light receiving rod 2-1 moved to 2-2 F, G → The rows H, H1, H2 of the light receiving pieces arranged vertically → From the ground to the horizontally rotating light Display height of light receiving rod 2

Claims (2)

[Claims] 1. The height H is obtained by rocking the light-receiving rod 2 which senses light and displays the height H as shown in FIG.
The method of finding the minimum number of and detecting and displaying the minimum number on the light receiving rod 2 to eliminate the tilt error of the light receiving rod. 2. The maximum number of the angle C is found by rotating the light-receiving surface of the light-receiving rod 2 displaying the angle C left and right by sensing light at two places as shown in FIGS. A method of displaying the maximum number on the light-receiving rod 2 and recording it to eliminate the tilt error of the light-receiving rod.