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CN-224216873-U - Three-dimensional measuring equipment of airborne laser radar

CN224216873UCN 224216873 UCN224216873 UCN 224216873UCN-224216873-U

Abstract

The utility model provides three-dimensional measuring equipment of an airborne laser radar, which belongs to the technical field of laser radar measurement and comprises an unmanned aerial vehicle, wherein the lower end of the unmanned aerial vehicle is provided with the laser radar, the laser radar is internally provided with an annular array substrate, a plurality of groups of transmitting modules and receiving modules are arranged in the laser radar, an optical lens mechanism is also arranged in the laser radar, an optical window is arranged in the center of the bottom of the laser radar, and a plurality of groups of transmitting modules are controlled by a control module. The utility model solves the problems that the traditional airborne laser radar realizes scanning coverage by mechanical rotation (such as a rotating mirror or motor drive), the whole mechanical structure is complex, the rotating parts are easily affected by vibration and abrasion, the fault rate is high, the stability is poor, meanwhile, the rotating mechanism occupies space, the equipment weight is increased, the unmanned aerial vehicle endurance is affected, the whole scanning efficiency is low, single light beams need to be scanned line by line, and the data acquisition rate is limited.

Inventors

  • ZHANG PINGPING

Assignees

  • 烟台市地理信息中心

Dates

Publication Date
20260508
Application Date
20250522

Claims (6)

  1. 1. The utility model provides an airborne laser radar three-dimensional measurement equipment, includes unmanned aerial vehicle (1), its characterized in that, laser radar (2) are installed to the organism lower extreme of unmanned aerial vehicle (1), the internally mounted of laser radar (2) has annular array substrate (3), the inside of laser radar (2) is equipped with multiunit transmitting module (4) and receiving module (5), the inside of laser radar (2) still is equipped with optical lens mechanism (6), the bottom central authorities of laser radar (2) are equipped with optical window (7), multiunit transmitting module (4) are through control module (8) control.
  2. 2. An airborne laser radar three-dimensional measurement device according to claim 1, characterized in that the transmitting module (4) comprises a plurality of laser transmitters (41), the receiving module (5) comprises a plurality of laser receivers (51), the laser transmitters (41) and the laser receivers (51) are mounted on the annular array substrate (3) and are spaced 5-10mm apart from each other, and a partition board is arranged between the laser transmitters (41) and the laser receivers (51).
  3. 3. An airborne laser radar three-dimensional measurement device according to claim 2, characterized in that the optical lens means (6) comprises a lens (61) fixed to the upper surfaces of the laser transmitter (41) and the laser receiver (51).
  4. 4. An airborne laser radar three-dimensional measurement device according to claim 3, characterized in that the optical lens mechanism (6) further comprises a first prism (62) and a second prism (63) fixed inside the laser radar (2), the first prism (62) and the second prism (63) being both located on the upper side of the lens (61).
  5. 5. The airborne laser radar three-dimensional measurement equipment according to claim 4, wherein a transmission port (31) is arranged in the middle of the annular array substrate (3), and the transmission port (31) corresponds to the optical window (7).
  6. 6. An airborne laser radar three-dimensional measurement device according to claim 1, characterized in that the control module (8) comprises a time division multiplexing controller (81) connected to the unmanned aerial vehicle (1) and the laser transmitter (41), respectively.

Description

Three-dimensional measuring equipment of airborne laser radar Technical Field The utility model belongs to the technical field of laser radar measurement, and particularly relates to airborne laser radar three-dimensional measurement equipment. Background As is well known, a three-dimensional laser radar is a process test instrument used in the fields of mechanical engineering and transportation engineering, and in order to measure a large-area such as a terrain, an airborne laser radar three-dimensional measurement device is generally used. The existing traditional airborne laser radar mostly adopts a single-beam transmitting-receiving module, and realizes scanning coverage through mechanical rotation (such as a rotating mirror or motor drive). The unmanned aerial vehicle has the following defects that the whole mechanical structure is complex, the rotating parts are easily affected by vibration and abrasion, the failure rate is high, the stability is poor especially when the unmanned aerial vehicle flies at a high speed, meanwhile, the mechanical rotating mechanism occupies space, the equipment weight is increased, the unmanned aerial vehicle endurance is affected, the whole scanning efficiency is low, a single light beam needs to scan line by line, the data acquisition rate is limited, and the high-resolution or large-range mapping requirement is difficult to meet. Disclosure of Invention The utility model provides three-dimensional measuring equipment of an airborne laser radar, which aims to solve the problem that the traditional airborne laser radar adopts a single beam transmitting-receiving module, and realizes scanning coverage through mechanical rotation (such as a rotating mirror or motor drive). The unmanned aerial vehicle has the following defects that the whole mechanical structure is complex, the rotating parts are easily affected by vibration and abrasion, the failure rate is high, the stability is poor especially when the unmanned aerial vehicle flies at a high speed, meanwhile, the mechanical rotating mechanism occupies space, the equipment weight is increased, the unmanned aerial vehicle endurance is affected, the whole scanning efficiency is low, a single light beam needs to scan line by line, the data acquisition rate is limited, and the problem that the high resolution or large-range mapping requirement is difficult to meet is solved. The embodiment of the utility model provides three-dimensional measurement equipment of an airborne laser radar, which comprises an unmanned aerial vehicle, wherein a laser radar is installed at the lower end of the body of the unmanned aerial vehicle, an annular array substrate is installed in the laser radar, a plurality of groups of transmitting modules and receiving modules are arranged in the laser radar, an optical lens mechanism is also arranged in the laser radar, an optical window is arranged in the center of the bottom of the laser radar, and a plurality of groups of transmitting modules are controlled by a control module. Further, the transmitting module comprises a plurality of laser transmitters, the receiving module comprises a plurality of laser receivers, the laser transmitters and the laser receivers are all arranged on the annular array substrate, the distance between the laser transmitters and the laser receivers is-mm, and a partition plate is arranged between the laser transmitters and the laser receivers. By adopting the technical scheme, the laser emitted by the laser emitter can be received by the laser receiver, so that multi-beam solid-state scanning is realized, and a rotating mechanism is not needed. Further, the optical lens mechanism comprises a lens fixed on the upper surfaces of the laser transmitter and the laser receiver. By adopting the technical scheme, the lens can correct the problems of beam divergence, aberration and the like, and more accurate light path control is realized. Further, the optical lens mechanism further comprises a first prism and a second prism which are fixed inside the laser radar, and the first prism and the second prism are both positioned on the upper side of the lens. By adopting the technical scheme, the first prism and the second prism can adjust the direction of the light beams and finally converge the light beams into the optical window, so that the situation that the window is independently opened for each group of light beams is avoided. Further, a transmission port is formed in the middle of the annular array substrate, and the transmission port corresponds to the optical window. By adopting the technical scheme, the light beams adjusted by the first prism and the second prism can be emitted from the transmission port and the optical window without being blocked. Further, the control module comprises a time division multiplexing controller respectively connected with the unmanned aerial vehicle and the laser transmitter. By adopting the technical scheme, the time division multiplexing c