SU1439403A1 - Method of geometric levelling - Google Patents

Abstract

The invention relates to geodetic measurements and allows an increase in labor productivity due to the acceleration of the registration process of measured values. The target axis of the level 4 is moved vertically until it coincides with the nearest stroke of the first scale fixed by the recorder 12. Then the vertical axis is directed at the nearest stroke of the second scale, fixing the new position of the axis. The vertical displacement of the axis decodes the marks of the observed strokes. On the leveling rod, the strokes of the second scale are offset relative to the adjacent strokes of the first scale by segments, the magnitude of which corresponds to the code of the adjacent strokes. 4 il. i (L

Description

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The invention relates to geodetic measurements, in particular, to determining the elevations between points.

The purpose of the invention is to increase the production of labor by accelerating the registration of measured values by jipouecca.

The proposed method is implemented using a set of devices. Jq; Figure 1 shows a leveling rail; - in Fig. 2, the measuring part: the power unit, general view; Figs 3 and 4 are schematic leveling schemes by the proposed method.} 5

The leveling rail consists of: a 1, in which the first 1 is fixed 2 with a constant distance 1 stroke between the lines and the second click 3 with a constant distance between the strokes 20 different from the distance between the strokes of the first scale. i The distances between strokes should correspond to the dependencies

d m 771; m kl; V - R.,;

- 4i

n.

 m - 1

Vr 1 -n-;

RI

mn.,

е d - the range of the vertical position of the sighting axis of the level of ° - pa; 1 distance between adjacent Q

strokes of the first scale; m distance between adjacent

strokes of the second scale; k is the coefficient chosen in

depending on the value of d d and the length of the staff (number of strokes) d is the vertical distance between two adjacent strokes of the first and second scales; n. - the number of the pair of adjacent strokes „“

first and second scales; V. is the vertical distance from the rod of the slats to the nth prime of the first scale;

R.

vertical distance from

pki reiki to the stroke of the second scale.

For example, with 1–30 cm marks for the third, fourth, and fifth bars

Q 5

0

five

0

35

Q

d „“

55

the first scale is 90; 120 and 150 cm and with m 33 cm the marks of the third, fourth and fifth strokes of the second scale are 99, 32 and 165 cm, respectively. The third, fourth and fifth strokes have an offset of 9, 12 and 15 cm, respectively, and is the code of their marks.

The measuring part of the kit (Fig. 2a) contains a level 4 mounted on a platform 5 fixed on a rod 6 of constant length moved in height in a tripod 7 and secured with a clamping screw 8. On the level there is a nozzle 9 on which there is a screw 10 serving movement of movable optical elements of the nozzle 9, resulting in movement along the height of the sighting axis of the level passing through the movable window 11. The measured values of the movement of the sighting axis are recorded on the magnetic carrier using o Registrar 12 (for example, known).

Another, simpler solution of the measuring part of the kit (Fig. 26) is also possible, when the level 4 is installed on the platform 5 fixed on the rod 6 moved in height in the tripod 7. The rod 6 is equipped with a scale 13 and a rack 14, with which rotation Cremallee screws 5 smoothly move the level vertically. The displacement of the level is measured on a scale 13 by means of a photoelectric converter 16 and recorded by the recorder 12.

When leveling from the middle, the rod 6 with the platform 5 is not needed and the level 4 with the nozzle 9 is mounted on the tripod 7 as usual.

Leveling is carried out as follows.

At one of the points, the leveling rod 1 is installed, and on the other - level 4 with nozzle 9 and the recorder 12 (Fig. 3). After aiming at the rail, the level of the sight axis is moved vertically until it coincides with the first scale. This position of the video axis of the axis is automatically recorded by the counting of the photoelectric converter and recorded by the recorder on a technical carrier. Then the vertical movement of the sighting axis is guided to the nearest

14

the bar of the second scale and the new position are also automatically recorded and recorded.

As a result, two readings are recorded corresponding to the two positions of the level of the sight axis.

Similarly, you can hover on the adjacent strokes of both scales with ranging threads of the reticle. The readings are used to automatically calculate (for example, on a microcomputer) the distance from the level to the rod and the distance between the leveling points.

The calculations are performed in the following sequence:

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m

 one

-.- Ii l- ii BjIs- -li.

V, - V,

+ t

- g

"R

(one)

(2)

(3)

(4) (5) (6)

g

t-count when hovering on (stroke of the first scale;

- deduction when pointing to the stroke of the second scale; ,

V - height of sight at the stroke

first scale slats; P - the height of the tool. Excess h is calculated by formula (5) when leveling from the middle and by formula (6) when leveling forward. (

Claims (1)

Invention Formula 15 A geometric leveling method in which the leveling axis of the level is moved vertically to its alignment with the strokes of the leveling scale and the height of the axis of the axis, which is different in that, in order to improve labor productivity 20 sa registration of measured values determine the value of the vertical displacement of the level of the target axis when it is successively hovering to the closest stroke of the first scale and adjacent to 2 him stroke of the second scale leveling slats made with offset strokes of the second scale relative to adjacent strokes of the first scale into segments whose length corresponds to the code 30 marks of these adjacent strokes, and the vertical displacement of the sighting axis is decoded by the marks of the observed - –th strokes. 3 EI uh t And 3 3 3 Phie.1 Fig, s FIG and