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CN-122017796-A - Laser radar

CN122017796ACN 122017796 ACN122017796 ACN 122017796ACN-122017796-A

Abstract

The embodiment of the application discloses a laser radar. The laser radar comprises two laser emission modules and a laser receiving module. The two laser emission modules are respectively positioned on two opposite sides of the laser receiving module, and the combination of the emission view fields of the two laser emission modules is matched with the receiving view field of the laser receiving module. According to the application, the two laser emission modules and the one laser receiving module are arranged, and the combination of the emission fields of the two laser emission modules is matched with the receiving field of the laser receiving module, so that compared with the situation that the emission field of the one laser emission module is matched with the receiving field of the one laser receiving module in the related art, the arrangement of the two laser emission modules is more flexible, the miniaturized design of the laser radar can be realized, and the field receiving rate of the two laser emission modules can be improved, and the detection field angle of the laser radar can be expanded.

Inventors

  • LI HONGJU

Assignees

  • 深圳市速腾聚创科技有限公司

Dates

Publication Date
20260512
Application Date
20210930

Claims (10)

  1. 1. A laser radar which comprises a laser beam source, characterized by comprising the following steps: The system comprises two laser emission modules, wherein each laser emission module comprises a laser emission lens and a laser emission sensor, the laser emission lens is provided with a first optical axis, and the laser emission sensor is positioned on the light inlet side of the laser emission lens and is used for emitting laser beams to the laser emission lens; the laser receiving module comprises a laser receiving lens and a laser receiving sensor positioned on the imaging side of the laser receiving lens, wherein the two laser transmitting modules are respectively positioned on two opposite sides of the laser receiving module, and the combination of the transmitting visual fields of the two laser transmitting modules is matched with the receiving visual field of the laser receiving module.
  2. 2. The lidar of claim 1, wherein each of the laser emitting modules comprises a laser emitting sensor, and the laser emitting sensors of two of the laser emitting modules sequentially emit light at a predetermined timing.
  3. 3. The lidar of claim 1, wherein the first optical axes of both of the laser emitting modules are parallel to the second optical axis of the laser receiving module.
  4. 4. The lidar of claim 1, further comprising: a housing in which a receiving chamber is formed; The support, the support is located hold the chamber, the support is provided with first mounting hole and is located respectively the second mounting hole of first mounting hole both sides, laser receiving module set install in first mounting hole, every laser emission module set install respectively in one the second mounting hole.
  5. 5. The lidar of claim 4, wherein both the laser emitting module and the laser receiving module are located in the receiving cavity, and wherein the housing comprises: the first plate body, the first plate body have towards hold the first face of chamber and with the second face that first face is relative, be provided with on the first plate body and run through first face with the first light hole of second face, and be located respectively the second light hole of first light hole both sides, the laser receiving module corresponds first light hole sets up, every the laser emission module corresponds one respectively the second light hole sets up, second face department is provided with the cover first light hole and two the printing opacity protection shield of second light hole.
  6. 6. The lidar of claim 4, wherein the radar is configured to, The second plate surface is provided with a mounting groove which is communicated with the first light through holes and the two second light through holes, and the light-transmitting protection plate is positioned in the mounting groove, or The utility model discloses a lamp, including first mounting groove, second mounting groove, first light through hole, second mounting groove, second light through hole, first mounting groove and second mounting groove that are located respectively are provided with on the second face first mounting groove both sides, first mounting groove with first light through hole intercommunication, every second mounting groove respectively with one second light through hole intercommunication, the light transmission protection shield includes first sub light transmission protection shield and two second sub light transmission protection shields, first sub light transmission protection shield is located first mounting groove, every second sub light transmission protection shield is located one respectively the second mounting groove.
  7. 7. The lidar of claim 4, wherein the housing comprises: The first plate body, the first plate body have towards hold the first face of chamber and with the second face that first face is relative, be provided with on the first plate body and run through the first face with the third mounting hole of second face, and be located respectively the fourth mounting hole of third mounting hole both sides, the receiving end of laser receiving module passes the third mounting hole just is located outside the casing, every the transmitting end of laser transmitting module passes respectively one the fourth mounting hole just is located outside the casing.
  8. 8. The lidar according to any of claims 1 to 7, wherein a light shielding member is provided around at least one of the emitting end of the two laser emitting modules and the receiving end of the laser receiving module.
  9. 9. The lidar of claim 1, wherein each of the laser transmitter modules comprises a transmitter board electrically connected to the laser transmitter sensor, and wherein the laser receiver module comprises a receiver board electrically connected to the laser receiver sensor, and wherein the transmitter board and the receiver board share the same circuit board.
  10. 10. The laser radar of claim 1, further comprising a main control board and an interface board, wherein the transmitting board and the receiving board are electrically connected with the main control board, the main control board is located above the laser transmitting module and the laser receiving module, the interface board is electrically connected with the main board and is electrically connected with an external connector through the interface board to realize power supply and/or communication, and the interface board is located above the laser transmitting module and the laser receiving module.

Description

Laser radar The present application is a divisional application, the application number of the original application is 202111159444.6, the application date of the original application is 2021, 9 months and 30 days, and the whole content of the original application is incorporated by reference into the present application. Technical Field The application relates to the technical field of laser detection, in particular to a laser radar. Background The lidar is a radar system that detects a characteristic quantity such as a position, a speed, etc. of a target by emitting a laser beam. The working principle is that a detection signal (laser beam) is emitted to a target, then a received signal (target echo) reflected from the target is compared with the emission signal, and after proper processing, the related information of the target can be obtained, for example, the information of the distance, the azimuth, the height, the speed, the gesture, the even shape and the like of the target can be obtained. However, in the related art, there is a problem in that a detection field of view is limited due to unreasonable structural design of the lidar. Disclosure of Invention The application provides a laser radar which is used for solving the problem that the detection view field of the laser radar in the related technology is limited. The application provides a laser radar, comprising: Two laser emission modules; and the two laser emission modules are respectively positioned at two opposite sides of the laser receiving module, and the combination of the emission view fields of the two laser emission modules is matched with the receiving view field of the laser receiving module. According to the laser radar, the two laser emission modules and the one laser receiving module are arranged, the combination of the emission fields of the two laser emission modules is matched with the receiving field of the laser receiving module, compared with the fact that the emission field of the one laser emission module is matched with the receiving field of the one laser receiving module in the related art, the arrangement of the two laser emission modules is more flexible, the miniaturization design of the laser radar can be achieved, and the field receiving rate of the laser receiving module can be improved and the detection field angle of the laser radar can be expanded by the two laser emission modules. Drawings In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a perspective view of a laser transmitting module and a laser receiving module in a first laser radar according to an embodiment of the present application; FIG. 2 is a perspective view of a laser transmitting module and a laser receiving module in a second laser radar according to an embodiment of the present application; FIG. 3 is a cross-sectional view of a laser emitting module and a laser receiving module in the laser radar shown in FIG. 1; FIG. 4 is a cross-sectional view of a laser emitting module and a laser receiving module in the laser radar shown in FIG. 2; FIG. 5 is a cross-sectional view of an alternative to the lasing module and lasing module in the lidar shown in FIG. 4; FIG. 6 is a perspective view of a third lidar according to an embodiment of the present application; FIG. 7 is a cross-sectional view of the laser radar shown in FIG. 6 taken along the A-A direction; FIG. 8 is an exploded view of the lidar shown in FIG. 6; FIG. 9 is a perspective view of a fourth lidar according to an embodiment of the present application; FIG. 10 is a cross-sectional view of the laser radar shown in FIG. 9 taken along the A-A direction; FIG. 11 is a perspective view of a fifth lidar according to an embodiment of the present application; FIG. 12 is a cross-sectional view of the laser radar shown in FIG. 11 taken along the A-A direction; FIG. 13 is a cross-sectional view of the laser radar shown in FIG. 11 along the B-B direction; FIG. 14 is a perspective view of a sixth lidar according to an embodiment of the present application; FIG. 15 is a cross-sectional view of the laser radar shown in FIG. 14 along the A-A direction; FIG. 16 is a cross-sectional view of the laser radar shown in FIG. 14 along the B-B direction; FIG. 17 is a perspective view of a laser transmitting module and a laser receiving module in a seventh laser radar according to the embodiment of the present application; FIG. 18 is an exploded view of the laser emitting module and the laser receiving module of the laser radar shown in FIG. 17; FIG. 19 is a perspective view of an eighth lidar prov