JPH01184411A - Height and distance measuring meter - Google Patents

Abstract

PURPOSE:To quickly and with high accuracy perform the distance measurement and the height measurement by operating the measuring data of an inclination angle sensor by an arithmetic part. CONSTITUTION:At the time of measuring a distance, first of all, a rod material 5 is rotated so that both collimating part can collimate a measuring target 8. Subsequently, a point collimated by a rotation collimating part 4 on the measuring target 8 is collimated by a variable angle collimating part 3. In this case, an inclination angle 0 to the collimating point of the rotation angle collimating part 4 can be measured by an inclination angle sensor 2, therefore, when length between both the collimations is denoted as (a), a distance L=a/tan0 is calculated by an arithmetic part 7 and displayed. At the time of measuring the height, first of all, a horizontal distance L to the measuring target 8 is derived. Subsequently, a bottom part 9 of the measuring target is collimated by the variable angle collimating part 3, its inclination angle (b), and next, the top part 10 of the measuring target are collimated, and its inclination angle (t) is measured by the inclination angle sensor 2, respectively. By using both these inclination angles, as for height H, H=L(tanb+tant) is calculated by the arithmetic part 7 and displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application This invention relates to a simple height and distance measuring instrument.

b. Prior Art Conventionally, for simple distance measurements, a base line of a certain length is taken horizontally, and the angle between the measurement target and the base line is read on a scale converted to distance or calculated. In addition, for simple height measurement, measure the elevation angle between the top and bottom of the measurement target, and use the horizontal distance to the measurement target determined by a simple method to calculate the height or use a conversion chart etc. There is. All of these methods have poor accuracy and require skill to read.

C1 Problems to be Solved by the Invention The present invention attempts to perform simple distance and height measurements more quickly and with higher precision than conventional methods.

Means for Solving the d9 Problem A first embodiment of the solving means will be described with reference to FIG.

A variable angle collimation unit 3 equipped with an inclination angle sensor 2 so that the inclination angle of the standard axis 1 can be measured; and a fixed angle collimation unit 4 that standardizes the horizontal direction when the bar 5 is installed vertically. are attached to a bar 5 at a fixed distance apart, and are provided with an optical system 6 that allows the reference image of the fixed angle collimation section 4 to be observed from the variable angle collimation section 3. Further, a calculation unit 7 is attached to the bar 5 so that height and distance can be calculated and displayed based on the measurement data of the inclination angle sensor 2.

81 operation A first embodiment of the operation will be described with reference to FIGS. 1 and 2.

To measure the distance, first the bar 5 is placed vertically, and the bar 5 is rotated so that both reference parts can reference the measurement target 8. Next, the variable-angle collimation unit 3 standardizes the point on the measurement target 8 that the fixed-angle collimation unit 4 is standardizing.

At this time, the fixed angle collimation unit 4 is set by the tilt angle sensor 2.

Since the inclination angle 0 to the reference point can be measured, if the length between the two reference parts is a, the distance is L = a as shown in Figure 2.
/1ano is calculated by the calculation unit 7 and displayed.

When performing height measurement, first the horizontal distance to the measurement target 8 is determined using the distance measurement procedure described above. Next, the bottom 9 of the measurement target is referenced by the variable angle collimation unit 3, and its inclination angle s is then referenced, and then the top 10 of the measurement target is referenced, and the inclination angle t is measured by the inclination angle sensor 2, respectively. Using both angles of inclination,
As shown in Figure 2, the height H is H=L(tanb+tant
) is calculated by the calculation unit 7 and displayed. Incidentally, the input from the inclination angle sensor 2 to the calculation section 7 is automatically performed.

f8 Effects of the Invention According to the present invention, it is possible to provide an instrument that can perform distance measurement and height measurement quickly and accurately by using an inclination angle sensor.

g. Other Examples (1) A second example will be described with reference to FIGS. 3 to 5.

In this embodiment, as shown in FIG. 3, a second inclination angle sensor 11 is attached to the bar 5, which can measure the inclination angle λ of the bar itself with respect to the reference direction. During measurement, by directing the line of sight of the fixed angle collimation unit 4 toward the measurement target, the calculation unit can calculate the measurement calculations shown below and in FIG. 4 to obtain the distance L2 and height H2. can.

5L=a/1an(λ-θ) L2=SLcosλ-dsin input H2=SLsin input+dcosλ However, SL=slope distance, a=datum interval λ=bar inclination angle, θ=variable angle standard inclination angle d= Length between bar end and fixed angle reference part According to this embodiment, it is possible to easily measure a wall surface with large irregularities or a measurement target with a large elevation angle. Furthermore, by providing the bar 5 with a rotating shaft 12 perpendicular to the reference direction as shown in FIG. 5, the cross section of the tunnel can be measured.

(2) In the third embodiment, as shown in FIG. 6, the length of the bar 5 between the variable-angle collimation section 3 and the fixed-angle collimation section 4 is made variable, and the change in the length can be measured. Equipped with sensor 1.3. According to this embodiment, the length of the equipment during transportation can be shortened, and the baseline length can be increased depending on the conditions of the place where it is used, so that highly accurate measurements can be performed.

(3) In the fourth embodiment, as shown in FIG. 7, the fixed-angle collimation unit 4 is used to generate a light spot 14 on the measurement target, and the variable-angle collimation unit 3 provides light that can be referenced before the substitution. This embodiment is equipped with a light source section 15 that can emit light in the same direction as the collimation line of the fixed angle collimation section. According to this embodiment, the reference point can be displayed as a point of light, making reference easy and eliminating the need for an optical system.

(4) In the fifth embodiment, as shown in FIG. 8, a pedestal 16 with scales for flat plate surveying is provided at the end of the bar. According to this embodiment, when performing flat surveying, there is no need to place personnel at the measurement target position.
This is advantageous because the distance and height of the measurement target can be measured from the flat plate side.

[Brief explanation of the drawing]

Figure 1 is a side view and front view of the present invention, Figure 2 is an explanatory diagram of the measurement calculation of the present invention, Figure 3 is a front view of an embodiment in which a second tilt angle sensor is installed, and Figure 4 is a front view of the second tilt angle sensor. An explanatory diagram of the measurement calculation of the embodiment with the inclination angle sensor installed. Figure 5 is a side view of the embodiment in which the second inclination angle sensor is installed when used for tunnel cross-section measurement. Figure 6 is the variable bar length. Fig. 7 is a side view of an embodiment equipped with a light source unit instead of the fixed angle reference unit, and Fig. 8 is a side view of an embodiment equipped with a pedestal with a scale for flat plate surveying. . 1. Line of sight, 2. Tilt angle sensor, 3. Variable angle collimation section, 4. Fixed angle reference section, 5. Bar, 6. Optical system, 7. Computation section. 8. Measurement target, 9. Bottom of measurement target, 10. Top of measurement target, 11. Second tilt angle sensor, 12. Rotation axis, 13. Length measurement sensor, 14.
...Light point, 15.. Light source part, 16.. Pedestal with scale for flat plate surveying.

Claims (5)

[Claims] (1) A variable-angle collimation unit equipped with a tilt angle sensor that can measure the tilt angle of the reference axis when the reference axis fluctuates; The reference image of the fixed-angle collimation section is attached to the material at a certain distance from the fixed-length collimation section using an optical system, and the reference image of the fixed-angle collimation section can be observed from the variable-angle collimation section. A height measurement rangefinder equipped with a calculation section that can calculate and display the following. (2) The height and range finder according to claim 1, wherein the bar is equipped with a second inclination angle sensor capable of measuring the inclination of the bar itself with respect to the current reference line direction. (3) The length of the bar between the variable-angle collimation section and the fixed-angle collimation section is made variable, and a length measurement sensor capable of measuring changes in the length is provided in claims 1 to 2. Height and distance meter as described in section. (4) Instead of the fixed-angle collimation unit, generate a light spot on the measurement target and direct the light that can be collimated from the variable-angle collimation unit to the same collimation line as the fixed-angle collimation unit before replacement. A height measuring rangefinder according to any one of claims 1 to 3, comprising a light source unit capable of emitting light in a direction. (5) The height measuring distance meter according to any one of claims 1 to 4, wherein the end of the bar is provided with a pedestal with a scale for flat plate surveying.