CN212963249U

CN212963249U - Laser leveling instrument for ground and wall surfaces in building industry

Info

Publication number: CN212963249U
Application number: CN202020996612.1U
Authority: CN
Inventors: 孙宗正
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-04-13
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a building industry ground, wall laser levelling instrument relates to building industry ground, wall and road flatness detection area. The laser planometer for the ground and the wall in the building industry comprises a fixed support, a fine-tuning horizontal base, a laser beam distribution device, a laser ranging device, a data processing module and an upper computer. And the upper computer controls the laser beam scattering device to uniformly scatter the scanning laser beams on the measured plane from point to surface to obtain the distance from the measurement origin to each detection point. According to the measured distance between each detection point and the elevation angle/depression angle and azimuth angle of the laser beam, the data processing module obtains the vertical displacement and the horizontal displacement of each detection point relative to the measurement origin through trigonometric function operation, further obtains the space coordinates of each point on the plane to be measured, and converts the space coordinates into a visual image through an upper computer.

Description

Laser leveling instrument for ground and wall surfaces in building industry

Technical Field

The utility model relates to a building industry ground, wall flatness detection area.

Background

In the building industry, the flatness of original ground, wall and road surfaces of buildings must be evaluated when houses are decorated and roads are laid, and the flatness of the original ground, wall and road surfaces of the buildings reaches a certain standard through professional means, otherwise, the original ground, wall and road surfaces of the buildings are arched, hollow and bulged, and fall off. After the construction operation of the ground, the wall surface and the road surface is finished, the flatness of the ground, the wall surface and the road surface needs to be detected and accepted. At present, the flatness of the ground, the wall and the road surface in China is mainly measured by means of a running rule and the like, and most of the traditional means have the defects of low measurement speed and low precision and need to contact with a measured object so as to cause pollution and even damage to the measured object. With the progress of laser technology, various laser ground, wall and road flatness detection instruments have been developed in the past years, and non-contact flatness detection equipment mainly based on a laser range finder has been developed, so that the flatness conditions of the ground, the wall and the road can be detected at high speed. However, these devices still need to be mounted on a movable carrier or a bracket covering the whole detection plane, which increases the cost and efficiency of detection and inevitably causes the contact between the carrier and the bracket and the detected plane.

Disclosure of Invention

To the problem, the utility model provides a non-contact ground, wall flatness detector based on laser rangefinder. The non-contact detection of the flatness of the plane to be detected can be completed at one fixed point. The technical scheme of the utility model is realized like this: a laser planometer for the ground and wall surface of building is composed of triangular frame, fine-tuning horizontal base, laser beam distributor, laser range finder, data processing module and upper computer. The height of the triangular support is adjustable. The upper part of the triangular support is connected with the fine-tuning horizontal base. The fine adjustment horizontal base is provided with a horizontal bubble or a biaxial inclinometer and a fine adjustment mechanism, and the fine adjustment horizontal base is adjusted to be in a horizontal state through the fine adjustment mechanism during measurement operation. The laser ranging device and the laser beam spreading device are disposed on the fine adjustment horizontal base. The upper computer comprises a program for controlling the laser spreading device and a reverse control module.

When the laser planometer for the ground and the wall in the building industry works, firstly, a certain point in a defined space of the upper computer is manually taken as a measurement original point. The upper computer generates a series of space coordinates of laser beams emitted by the laser ranging device, namely an elevation angle/depression angle alpha and an azimuth angle beta, and controls the laser beam scattering device to uniformly scatter the scanning laser beams on a measured plane from point to surface according to the coordinates. And the laser ranging device measures the distance E from the measurement origin to each detection point. The resulting E and the spatial coordinates of the incident laser beam, i.e. the elevation/depression angle α and the azimuth angle β, constitute a corresponding set of data. And the laser ranging device transmits the measured distance E, the elevation/depression angle alpha and the azimuth angle beta into the data processing module. And the data processing module obtains the vertical displacement H and the horizontal displacement L of each detection point relative to the measurement original point through trigonometric function operation so as to obtain the space coordinates P (H, L, beta) of each point on the plane to be measured. The calculation method of the data processing module comprises the following steps: the vertical displacement of the detection point relative to the measurement origin, the horizontal displacement of the detection point relative to the measurement origin, the distance from the measurement origin to the detection point measured by the laser ranging module, the elevation/depression angle and the azimuth angle of the rotating arm of the rotating mechanism and the laser ranging device emitting laser beams form a plurality of right triangles, and the vertical displacement of the detection point relative to the measurement origin and the horizontal displacement of the detection point relative to the measurement origin can be obtained through trigonometric function operation. The upper computer comprises a three-dimensional visual imaging module used for converting the displacement value of each detection point into a visual image, and the data processing module transmits the space coordinates P (H, L, beta) of each detection point obtained by operation to the upper computer and converts the space coordinates P (H, L, beta) into the visual image.

The upper computer comprises a reverse control module. When one point on the visual image is selected and confirmed on the upper computer, the reverse control module utilizes the space coordinates P (H, L, beta) of the selected point to generate the space coordinates of the laser beam emitted by the laser range finder, namely the elevation/depression angle alpha and the azimuth angle beta to reversely control the laser range finder to emit the laser beam to irradiate the corresponding detection point of the detection plane. The method is beneficial to quickly finding out the uneven points of the plane to be detected, and is convenient to process.

The laser beam distribution device is used for uniformly distributing the laser beam emitted by the laser ranging device on a plane to be measured from point to surface. The laser beam distribution device is one or a combination of mechanical rotation, an optical reflection/refraction mirror, a Flash (Flash) technology and an optical phased array technology. The laser beam spreading device can adopt two or more rotating holders and mechanical joints to achieve the purpose of uniformly spreading laser beams. A micromirror system can also be employed to change the path of travel of the laser light using a mechanically actuated mirror or refractor. The opa (optical phase array) optical phased array technology mainly adopts a plurality of light sources to form an array, and synthesizes a main light beam with a specific direction by controlling the light emitting time difference of each light source. Then the main beam is controlled to scan in different directions. The principle of Flash (Flash) is Flash, which directly emits a large patch of laser light covering the detection area in a short time, followed by a highly sensitive receiver to complete the mapping.

Drawings

The drawings in the following description are only some embodiments of the invention, and other drawings can be obtained by those skilled in the art without inventive exercise.

FIG. 1 is a block diagram of the laser leveling instrument for the ground and wall surfaces in the construction industry

FIG. 2 is the operation schematic diagram of the laser leveling instrument for the ground and wall surfaces in the building industry

The corresponding part names indicated by the numbers and letters in the drawings:

1-a triangular bracket; 2-fine adjustment of the horizontal base; 3-rotating the pan-tilt; 4-a laser ranging device; 5-a laser beam; 6-a reflector; α -laser beam elevation/depression; e-measuring the distance from the original point to each detection point; l-horizontal displacement of each detection point relative to the measurement origin; h-vertical displacement of the detection points relative to the measurement origin

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiment provides a laser leveling instrument for the ground and the wall of the building industry and a detection method.

The lowest end of the ground and wall surface laser leveling instrument is provided with an alloy triangular support 1, and a fine-tuning horizontal base 2 is fixed on the triangular support 1. The fine adjustment horizontal base 2 is provided with a biaxial inclinometer and a fine adjustment mechanism, and the fine adjustment horizontal base 2 is adjusted to be in a horizontal state through the fine adjustment mechanism during measurement operation. A rotating tripod head 3 is arranged above the fine-adjustment horizontal base 2, and the rotating tripod head 3 can rotate 360 degrees on the horizontal plane. The rotating cradle head 3 is provided with a laser range finder 4. A rotating bracket with a reflector 6 is arranged above the laser range finder 4. The laser beam 5 emitted by the rangefinder may be reflected by a mirror 6 on the turret. The laser range finder, the rotary holder steering engine and the rotary bracket steering engine are all connected with a Programmable Logic Controller (PLC). The PLC is in communication connection with the notebook computer.

When the measurement operation is started, a certain point in the space is defined as a measurement origin. In the example, the circle center of the reflector 6 on the rotating frame is selected as a measurement origin. The planometer is placed near the plane to be measured. The measuring distance of the laser range finder 4 can reach more than 10 meters, so the range of 0.5-10 meters can be kept between the planometer and the plane to be measured. And adjusting the height of the triangular support 1 and fixing to ensure that the distance between the measuring original point and the plane to be measured is fixed. The fine adjustment horizontal base 2 is adjusted to a horizontal state through a fine adjustment mechanism. The notebook computer generates a series of three-dimensional coordinates of the laser beam emitted by the laser range finder 4, namely an elevation/depression angle alpha and an azimuth angle beta. And the PLC controls the rotary holder 3 to rotate on the horizontal plane and the rotary reflector 6 to rotate on the sagittal plane, and the two drive the laser beam 5 emitted by the laser range finder 4 to be uniformly distributed from the measurement origin to the plane to be measured. The laser range finder 4 measures the distance E from the measurement origin to each detection point. The obtained E and the spatial coordinates of each incident laser beam, i.e., the elevation/depression angle α and the azimuth angle β, form a corresponding relationship. The laser rangefinder 4 inputs the measured distance E and the elevation/depression angle α and azimuth angle β to the PLC. The PLC obtains the vertical displacement H and the horizontal displacement L of the detection point relative to the measurement origin through trigonometric function operation, and the operation formula is as follows: h ═ E × sin α; l ═ E × cos α. And the PLC transmits the space coordinates P (H, L, beta) of each detection point obtained by the operation to the notebook computer to generate an EXCEL spreadsheet, and further converts the EXCEL spreadsheet into a color gradation image, a three-dimensional histogram, a contour map or a relief map. The notebook computer comprises a reverse control module. When a point on the visual image is selected and confirmed on the notebook computer, the reverse control module utilizes the space coordinates P (H, L, beta) of the point to generate the space coordinates of the laser beam emitted by the laser range finder, namely the elevation/depression angle alpha and the azimuth angle beta to reversely control the laser range finder to emit the laser beam to irradiate the detection point of the corresponding detection plane. The method can quickly find out the points with uneven surface to be detected, and is convenient to process.

Claims

1. The ground and wall laser leveling instrument is characterized by comprising a triangular support, a fine-adjustment horizontal base, a laser distance measuring device, a laser beam distribution device, a data processing module and an upper computer, wherein the triangular support is connected with the fine-adjustment horizontal base, the laser distance measuring device and the laser beam distribution device are arranged on the fine-adjustment horizontal base, the data processing module is connected with the laser distance measuring device, and the upper computer is connected with the data processing module and the laser beam distribution device.

2. The floor and wall laser leveling instrument of claim 1, wherein the fine adjustment horizontal base is provided with a horizontal bubble or a dual-axis tilt sensor.

3. The floor and wall laser planometer according to claim 1, wherein the laser beam distribution device is one or a combination of mechanical rotation, optical reflection/refraction mirror, Flash technology and optical phased array technology, and is used for uniformly distributing the laser beam emitted by the laser ranging device on the plane to be measured in a point-to-surface manner.

4. The floor and wall laser leveling instrument according to claim 1, wherein the data processing module is independent or integrated in an upper computer and has trigonometric function calculation capability.

5. The laser floor and wall planometer according to claim 1, wherein the upper computer comprises a three-dimensional visualization imaging module for converting the displacement value of each detection point into a visualization image.

6. The floor and wall laser leveling instrument according to claim 5, wherein the upper computer comprises a reverse control module, and the reverse control module is used for reversely controlling the laser ranging device to emit laser beams to irradiate the detection points of the corresponding detection planes when one point on the visual image is selected on the upper computer.