JPH07208981A - Level for measuring horizontality, distance and angle - Google Patents

Abstract

PURPOSE:To make it possible to perform simultaneous survey of horizontality, distance and angle by one person by providing a plurality of light receiving parts. CONSTITUTION:A light emitting device 1 horizontally emits light, e.g. laser light during rotation. The rotating light is detected with a light receiving part 4 of a light receiver 3, and the horizontality and the time are recognized. The light moves from the part 4 to a light receiving part 5. The light is detected again with the part 5. The moving time from the part 4 to the part 5 is computed. The angle C is obtained based on the moving time. The distance A from the light emitting device 1 to the light receiver 3 can be computed based on the angle C and the interval B between the parts 4 and 5. The level and the distance are displayed at the position of the light receiver 3. Thus, the simultaneous surveying of horizontality, distance and angle can be executed by one person.

Description

Detailed Description of the Invention

[0001]

[Industrial application] The present invention measures 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 became very convenient because the leveling can be done manually by a person. As shown in Fig. 1, the laser level is a laser beam that is horizontally rotated and emitted, and no person is needed at the injection machine 1. Only one light-receiving part 4 that senses light can be used by one person to read the scale of the staff 2 on the light-receiving part 4 for leveling.

[0003]

[Problems to be solved by the invention] However, it was impossible to measure the distance and angle with the conventional laser level, and two people were still needed to measure the distance and angle.

[0004]

[Means for Solving the Problems]

(1) According to the level of the present invention, a portion for sensing rotating light is shown in FIG.
The injection machine 1 horizontally emits light (the same applies to laser light, light waves, etc.) while rotating, as in the past. ， The rotation light is detected by the light receiving part 4 of the light receiver 3 to know the level and time. The light moves from 4 to 5, the sensing part 5 detects the light again, and the time from 4 to 5 is calculated. Since the time for the light to make one rotation is fixed, the angle C can be obtained if the moving time from 4 to 5 is known. Since the interval B between the light receiving parts 4 and 5 is fixed, the angle C and the interval B are known. Since the distance from the injection machine 1 to the light receiver 3 can be calculated by the mathematical formula, the horizontal and distance are displayed at the position of the light receiver 3. Although the light-receiving portion is described as two in FIG. 1, it may be three as shown in FIG. 4 and the light-receiving portion 15 in the middle may be dedicated for leveling and the two 14, 14 on both sides may be dedicated for distance measuring.
It is also possible to increase the accuracy of distance measurement by increasing the number of light receiving parts. (2) FIG. 3 explains that the angle E moved by the staff is calculated and displayed. There are two injectors 7 and 8 that emit light while rotating the light horizontally. 9,
Detected at 11, and as described in (1), horizontal and distance A1,
A2 is calculated and displayed at the position of the light receiver 3. In order to calculate the moving angle E of the staff, the light of the ejector 7 is sensed by 11 and the light of 8 is sensed by 10, the horizontally rotating light 7,
The rotation speed of 8 is different and the light is received by the light receiving portion 1
Read the rhythm sensed at 0 and 11
The movement angle E is calculated by specifying crying. Next, the arrival rhythm of the two lights and the position identification will be described with reference to FIG.
Assuming that the rotation speed is 20 seconds, and the lights 7 and 8 start at the same time from the position of 0 degrees on the left side of FIG. 6, the light receiving rhythm at the 90 degree position is 2.5 seconds on the right side of FIG. B), 7.5
Seconds (low), 10 seconds (high), and at the 180-degree position, 5 seconds (hoe), 5 seconds (heat), 10 seconds (toe).
E), 7.5 seconds (Lee), 2.5 seconds (Null), 10 seconds (Rule) at 270 degree position, 10 seconds (Nee) at 0 degree or 360 degree position. After 10 seconds (heach), the position can be specified by knowing the light receiving rhythm. As described above, the horizontal, distance and angle are displayed at the position of the light receiver 3. Figure 3
I explained the case with three light receiving parts, but Fig. 5 shows five light receiving parts. 18 is for leveling, 17 and 19 is for distance measurement, and 20 and 21 is for angle measurement.

[0005]

[Action]

[0006]

[Practical example]

[0007]

[Effects of the Invention] Level, distance and angle measurement can be performed by one person at the same time

[Brief description of drawings]

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

FIG. 2 is a perspective view showing horizontal and distance measurement of the present invention.

FIG. 3 is a perspective view showing the horizontal, distance and angular survey of the present invention.

FIG. 4 is an elevation view showing a photodetector for detecting horizontal light and calculating horizontal and distance according to the present invention.

FIG. 5 is an elevation view showing a photodetector for detecting horizontal light and calculating a horizontal distance and an angle according to the present invention.

FIG. 6 is an explanatory diagram of a light arrival rhythm and position identification according to the present invention.

[Explanation of symbols]

1, 7, 8 → Horizontal rotating light emitting machine 2, 12, 13 → Level 3 → Light receiving device 4, 5, 9, 10, 11, 14, 15, 16, 17,
18, 19, 20, 21 → Light receiving part 6 → Leg

Claims (2)

[Claims] 1. An ejector 1 for emitting a horizontally rotating light as shown in FIG. 2 and a plurality of light receiving portions 4 for sensing the light.
It is composed of a light receiver 3 having 5 and displays the horizontal by sensing the horizontal at the light receiving portion, calculates the angle C by knowing the interval B between the two light receiving portions and the time difference to be sensed, and receives the light from the light emitting device. Level to calculate and display the distance to the part 2. As shown in FIG. 3, a plurality of light emitting devices 7, 8 from which horizontally rotating lights are emitted and a light receiving device 3 having a plurality of light receiving portions 9, 10, 11 for sensing the two lights are provided. The horizontal direction is sensed at the light receiving portion and the horizontal is displayed, and the angle C is calculated by knowing the interval B between the two light receiving portions 9 and 11 and the time difference to be sensed, and the distance from the light emitting device to the light receiving portion is calculated. In addition to displaying, it senses the rhythm that a plurality of lights with different rotation speeds emitted from the injection machine reach the light receiving part, specifies the position by the difference in the rhythm, and calculates and displays the movement angle E from the staff 12 to the staff 13. Level to