DE3236470C2 - Method and device for generating a marking point that can be perceived by the human eye as a point of intersection of two laser beams - Google Patents

Abstract

With two laser beams, a spatial intersection that the human eye can perceive is generated, at which the marking point is automatically set.

Description

- that the calculator

- is a process computer

7. Voi direction according to one of claims 3-6 marked by

- radio links

- from the computer to the laser transmitters (Si, Si).

2. The method according to claim I ₁ , characterized in that

- That the laser beams (Lu Li) are adjusted after

- Direction (horizontal) angle (au ai) and

- Elevation angle (Ai, A ₂ ).

3. Apparatus for performing the method according to claim 1 with an arrangement for generating two laser beams (Lu L ₂ ), characterized by

- two laser transmitters (Si, Si) that can be controlled with regard to the direction of the laser beam

- at known coordinate points (Pu Pi),

- a laser beam receiver,

- which centers itself within a certain range on the intersection point (R) of the laser beams (Lu Li) , and

- a marker setting device

- for the automatic setting of the marking point at the intersection (R) of the two laser beams (Lu Li),

- controllable by the laser beam receiver, and

- That the laser beam receiver and the marker setting device

- are mounted on a vehicle.

4. Apparatus according to claim 3, characterized in that

- That the laser transmitter (Si. Si), the laser beam receiver and the marker setting device

- are adjustable in their height (i \, ii).

5. Device according to one of claims 3 or 4, characterized by

- a calculator

- The direction angle (au ai) and the elevation angle (Αι, A ₂ ) of the laser beams (Li, Li) to be specified by the two laser transmitters (Si, S ₂ ) are calculated from the given coordinates of the marking point to be set, taking into account the refraction

- controls the laser transmitter (Si, Si) accordingly.

The invention relates to a method and a device for generating a from the human eye perceptible marking point as the intersection point ι- 20 of two laser beams.

The invention is used for measuring technology Creation of marking (measuring) points when measuring the terrain. Such marker points are used in the manufacture of structures.

For example! Wooden pegs or steel rods are used as marking points, especially in road construction used They define the course of the later road in the terrain and thus serve the following construction crews for orientation.

For the transfer of numerically given three-dimensional coordinates to measuring points in the area, only the "normal" measurement method is known:
A survey point is by means of certain surveying instruments, such as. B. theodolite. Angled mirror tape measure or electro-optical distance measurement and an alignment rod from the desired point.
After checking the correct length, height and height of the point by the surveying team using the surveying instruments mentioned, the marker peg is hammered in with a heavy hammer.

If a target distance is required to stake out the point, as is the case with staking out using Angle mirror, a tape measure or an electro-optical device, for example the one in the DE-OS 21 27 933 described, are used.

In the last-mentioned procedure, the target distance Visible to the surveying team by means of a laser beam split by a prism.

In contrast, the object of the invention is to provide a method and a device fast, safe and precise transfer and set / cn of three-dimensionally determined marking points,

d. H. with numerically given three-dimensional coordinates, in the field (space).

This object is achieved according to the invention by the teaching according to the characterizing part of the claims 1 or 3.

Advantageous embodiments of the invention are shown in specified in the subclaims.

The advantage of the procedure according to the invention is in particular that only direction angles are used and the display of a target distance or distance measurements are avoided. Farther is in contrast to the one described in the prior art, more manual and therefore often with errors affected working method due to the invention

largely automated procedure for precise coordinates Production of the marking points possible.

The fact that two laser beams, which are usually far apart, are used in practice, is the The intersection of the laser beams is not abrasive, but can easily be seen by the human eye without aids be recognized. Due to the self-centering of the receiving device, it is possible to also measure other measuring points relative coordinates are specified with respect to the laser intersection point, to be set with pinpoint accuracy.

By using the process computer, environmental influences on the laser beam (such as refraction) can easily be taken into account when determining the directional angle.

The invention is explained in more detail by way of example with the aid of the (schematic) drawing shows

F i g. 1 shows the device according to the invention in plan; and

F1 g. 2 the same crfindungsgcPiäBc device ϊγτϊ Elevation.

At two points P \ (y \, x _u z \) and P ₂ (y _2, x ₂ , z ₂ ) that are spaced apart and determined by coordinates, a controllable laser transmitter Si or S _{2 is} set up, one for the human eye emits visible laser beam L or L ₂ , whose direction (horizontal) angle a \ or a? and whose elevation angle h \ or Λ2 is adjustable.
p The coordinates of a point in space to be created

R are given, with a line of sight from R to Si and from Λ to 52

The known coordinates of the spatial point R to be produced are entered by the user into a process computer (not shown) which, taking into account the refraction, determines the directional angles! a · ,, 22 and the elevation angles Αι, h _{2 of} the laser beams L \ and L ₂ calculated and separately, preferably via radio, then controls the laser transmitters S \ and S _2. The two laser beams L \ and L ₂ now generate the spatially perceptible intersection R. A distance measurement does not take place

The visible intersection of the laser beams L 1 and L ₂ indicates to the driver of a (all-terrain) vehicle (not shown) the location at which the marking point is to be set.

Mounted on the vehicle is a device that automatically takes over the exact alignment at the point of intersection R of the laser beams Lt and L ₂ and sets the marking, namely a laser beam receiver (not shown) that is located within a certain area at the point of intersection R of the two laser beams /.1 and L ₂ itself centered and controls an actual device for setting the marking point. The vehicle therefore only needs to drive into the area of the intersection point R. The marking is then aligned and set automatically.

To improve the line of sight from R to S \ and from R to S ₂ , the height /> or i _{2 of} the laser transmitters Si and Sj can be set via the coordinate point P \ or P ₂ and the height of the device mounted on the vehicle.

1 sheet of drawings

Claims (6)

Patent claims: 1. A method for generating a marking point that can be perceived by the human eye as an intersection point for laser beams (Lu Li), characterized in that, - that for the terrain survey the marking point is automatically set as a measuring point in a three-dimensionally predetermined position by - the location of the three-dimensional intersection point (R) determined by a laser beam receiver on a vehicle, - to a marker setting device on the same Vehicle transmitted and - The marker point is automatically set by the marker setting device. 6. Apparatus according to claim 5, characterized in that