CN210166506U

CN210166506U - Laser range finder capable of automatically correcting attitude error

Info

Publication number: CN210166506U
Application number: CN201920487134.9U
Authority: CN
Inventors: 刘月旻
Original assignee: Sichuan Zhihe Meijia Residential Technology Co Ltd
Current assignee: Sichuan Zhihe Meijia Residential Technology Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-03-20
Anticipated expiration: 2029-04-11

Abstract

The utility model discloses an automatic revise attitude error laser range finder, including shell, laser module, controller, bluetooth module, display screen and power module, laser module, bluetooth module, display screen, controller and power module set up in the shell, bluetooth module, display screen, laser module and power module are connected its characterized in that with the controller respectively: the laser module comprises a first laser module and a second laser module, and the first laser module and the second laser module are arranged on two opposite sides of the shell and are respectively connected with the controller; and the shell is provided with a function key connected with the controller.

Description

Laser range finder capable of automatically correcting attitude error

Technical Field

The utility model relates to a measuring tool field, concretely relates to automatic revise attitude error laser range finder.

Background

The prior laser range finder is generally provided with a laser transmitter and receiver. And calculating the receiving and transmitting delay time to obtain the length size of the space or the object to be measured. Compared with the traditional ruler, the existing laser range finder has the advantages of high speed, small volume, light weight and the like when measuring long size.

But there are still many deficiencies in the practical use:

firstly, the measurement result error is caused by attitude deviation such as handheld inclination of a measurer (mainly expressed by that the laser beam of the handheld tester is not coincident with the straight line of the measured distance).

Secondly, the measuring instrument needs to be placed at an initial end of the measured distance for measurement, and when the measured distance is long, a measurer needs to carry the device to move to one end point to start measurement, so that the use is inconvenient; if the distances from a certain point in the middle of the distance to the two ends are measured respectively and then added to obtain a result, the laser beams are not ensured to be on the same straight line for two times of measurement, and therefore, the error is increased.

At present, bubble gradienters are also arranged on measuring instruments in the market to provide attitude correction reference for a measurer, but the method can only play a certain reference role in horizontal or vertical measurement to reduce errors, cannot be applied to non-horizontal or vertical measurement occasions, and cannot quantify the generated errors. And the existing measuring instrument has single function and can only be used for distance measurement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can accomplish the length measurement at arbitrary a bit in the middle of the measuring distance to can correct attitude error laser range finder with the automatic correction of measurement angle automatically.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides an automatic revise attitude error laser range finder, includes shell, laser module, controller, bluetooth module, display screen and power module, laser module, bluetooth module, display screen, controller and power module set up in the shell, bluetooth module, display screen, laser module and power module are connected its characterized in that with the controller respectively: the laser module comprises a first laser module and a second laser module, and the first laser module and the second laser module are arranged on two opposite sides of the shell and are respectively connected with the controller; and the shell is provided with a function key connected with the controller.

Further, a gyroscope is connected to the controller.

Furthermore, a first laser transmitter and a first laser receiver are arranged on the first laser module in parallel.

Furthermore, a second laser transmitter and a second laser receiver are arranged on the second laser module in parallel.

The utility model has the advantages that:

1. when measuring in a long distance, a measurer only needs to make two ends of the distance measuring instrument respectively face two end points or end faces of a measured line segment at any point between the two ends of the measured line segment, so that distance measurement can be completed at one time, attitude error correction can be carried out, and the measurer is prevented from moving back and forth;

2. when the horizontal or vertical size is measured, even if the handheld equipment of a measurer is not in a horizontal or vertical state, a correct measurement result can be obtained; even if the laser beam of the distance measuring instrument is not coincident with the straight line of the measured line segment, the measuring error caused by the attitude error can be automatically corrected;

3. the inclination measurement and recording of the angle or the plane of the object can be realized;

4. area calculation and trigonometric function calculation can be performed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a distance measurement method;

FIG. 3 is a schematic diagram of a rangefinder;

the names corresponding to the reference numerals are: 1. the laser module comprises a first laser module, 101, a first laser transmitter, 102, a first laser receiver, 2, a second laser module, 3, a display screen, 4, a controller, 5, a power supply module, 6, a shell, 7, a function key, 8 and a gyroscope.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.

As shown in fig. 1 and 3, the laser range finder for automatically correcting the attitude error comprises a shell 6, a laser module, a controller 4, a bluetooth module, a display screen 3 and a power supply module 5, wherein the laser module, the bluetooth module, the display screen 3, the controller 4 and the power supply module 5 are arranged in the shell 6, and the bluetooth module, the display screen 3, the laser module and the power supply module 5 are respectively connected with the controller 4. The bluetooth module is used for data transmission work, adopts the CC2541 chip, and what power module 5 adopted is that the polymer lithium cell constitutes, and controller 4 adopts ATMEGA16, is equipped with the USB interface and is used for data transmission and charges. The display screen 3 is a 1.3-inch oled display screen.

The laser module comprises a first laser module 1 and a second laser module 2, and a first laser transmitter 101 and a first laser receiver 102 are arranged on the first laser module 1 in parallel. A second laser transmitter and a second laser receiver are arranged on the second laser module 2 in parallel.

The first laser module 1 and the second laser module 2 are disposed on opposite sides of the housing 6 and are connected to the controller 4, respectively. The gyroscope 8 is connected to the controller 4, the gyroscope 8 adopts a nine-axis gyroscope MPU9250, and angle data sensed by the gyroscope 8 is transmitted to the controller 4. The shell 6 is a cuboid, the shell can be conveniently used as a reference surface, and the shell 6 is provided with a function key 7 connected with the controller 4.

As shown in fig. 2, the laser distance meter adopts a phase difference distance measuring method, the wavelength of the emitted laser beam is 630-670 nm, and the distance of the first laser module 1 in the working process is described as follows: the first laser transmitter 101 emits a beam of laser light, the reflected light is received by the first laser receiver 102 when the light encounters an obstacle, the received reflected light and the emitted emergent light have a phase difference phi, and the phase difference phi is related to the distance L between the laser transmitter and the obstacle.

The distance L can be calculated by the following formula: l ═ phi. c. T/(4 pi)

Wherein, L is the distance between the laser transmitter (laser receiver) and the barrier, phi is the phase difference between the reflected light and the emergent light, c is the propagation speed of the light in the air, T is the cycle time of the modulation signal, and pi is the circumferential ratio.

In actual use, the measured distance is the sum of the first laser module 1 and the second laser module 2 plus the length of the housing 6.

During actual measurement, the angle data of 8 responses of gyroscope on the accessible observation display screen 3 can judge whether distancer and measured line are level, also can directly laminate the angle data of measured face survey measured face by the measured face. When the situation that whether the laser range finder is horizontal or vertical to a measured line is uncertain, two ends of a first laser module 1 and two ends of a second laser module 2 of the laser range finder respectively point to vertical planes at two ends of the measured line, a laser beam and the measured line are overlapped as far as possible, a function key 7 is pressed for a long time, the elevation angle and the azimuth angle of the laser range finder are adjusted back and forth in a small range, the function key 7 is released to finish measurement, the range finder can automatically record the minimum value in the process, and the minimum value is the length of the measured line.

When the area is measured, one adjacent side of the rectangle is measured according to the length measuring method after one side of the rectangle is measured, the number of the large font displayed in the center of the display screen 3 is the area of the rectangle just measured, and the square meter of the display unit is followed by the numerical value.

Claims

1. The utility model provides an automatic revise attitude error laser range finder, includes shell (6), laser module, controller (4), bluetooth module, display screen (3) and power module (5), laser module, bluetooth module, display screen (3), controller (4) and power module (5) set up in shell (6), bluetooth module, display screen (3), laser module and power module (5) are connected its characterized in that with controller (4) respectively: the laser module comprises a first laser module (1) and a second laser module (2), and the first laser module (1) and the second laser module (2) are arranged on two opposite sides of the shell (6) and are respectively connected with the controller (4); and the shell (6) is provided with a function key (7) connected with the controller (4).

2. The self-correcting attitude error laser rangefinder of claim 1, wherein: and the controller (4) is connected with a gyroscope (8).

3. The self-correcting attitude error laser rangefinder of claim 1, wherein: the first laser module (1) is provided with a first laser transmitter (101) and a first laser receiver (102) in parallel.

4. The self-correcting attitude error laser rangefinder of claim 3, wherein: and a second laser transmitter and a second laser receiver are arranged on the second laser module (2) in parallel.