CN-224231968-U - Test fixture

CN224231968UCN 224231968 UCN224231968 UCN 224231968UCN-224231968-U

Abstract

The disclosure provides a test fixture for performance testing of a laser radar. The test fixture comprises a shell, a first temperature adjusting plate and a second temperature adjusting plate. The first temperature adjusting plate is arranged in the shell. The second temperature adjusting plate is arranged in the shell. At least one of the first temperature regulating plate or the second temperature regulating plate is configured to be movable within the housing. The first temperature adjusting plate and the second temperature adjusting plate are arranged at intervals, a containing space is formed between the first temperature adjusting plate and the second temperature adjusting plate, the size of the containing space is larger than that of a shell of the laser radar, and the containing space is used for containing the laser radar. The first temperature regulating plate and the second temperature regulating plate are configured to change an ambient temperature of the lidar. The embodiment of the disclosure is beneficial to improving the accurate control degree of the laser radar environmental temperature, is suitable for laser radars with different specifications and sizes, improves the consistency of multiple tests, and improves the efficiency of the laser radar performance test.

Inventors

LI ZHAOQIN
HUANG KANG
ZHANG JIAN
ZHU KANG

Assignees

上海禾赛科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250328

Claims (12)

1. A test fixture is characterized by being used for performance test of a laser radar, and comprises a shell, a first temperature regulating plate and a second temperature regulating plate, wherein, The first temperature regulating plate is arranged in the shell; the second temperature regulating plate is arranged in the shell, At least one of the first temperature regulating plate or the second temperature regulating plate is configured to be movable within the housing; The first temperature regulating plate and the second temperature regulating plate are arranged at intervals, a containing space is arranged between the first temperature regulating plate and the second temperature regulating plate, the size of the containing space is larger than that of the shell of the laser radar, and the containing space is used for placing the laser radar; The first temperature adjustment plate and the second temperature adjustment plate are configured to change an ambient temperature of the lidar.
2. The test fixture of claim 1, further comprising a blower configured to blow air toward a window of the lidar.
3. The test fixture of claim 2, wherein the blowing device comprises a blower tube configured to be bendable such that at least one of a direction or a position of the blowing of the blower tube corresponds to the window.
4. The test fixture of claim 2, further comprising a spacer, at least a partial region of the spacer being located between the first temperature adjustment plate and the second temperature adjustment plate.
5. The test fixture of claim 4, wherein the spacer comprises a fixing plate and an adjusting plate, wherein, The fixing piece is attached to the first temperature adjusting plate and is provided with a notch; the adjusting piece is movably arranged at the notch position and shields the notch.
6. The test fixture of claim 5, wherein the second temperature adjustment plate and the fixing plate are clamped at the position of the notch.
7. The test fixture of claim 1, wherein the housing includes a see-through window configured to allow probe light and echoes of the lidar to pass therethrough.
8. The test fixture of claim 7, wherein the housing further comprises an insulating plate, the insulating plate being connected to the transparent window, or the transparent window being embedded in the insulating plate to form a cavity, the lidar being located in the cavity.
9. The test fixture of claim 8, wherein the insulation board comprises an outer board and an inner board, the outer board and the inner board are arranged at intervals and form a hollow structure, and the hollow structure is filled with insulation material.
10. The test fixture of claim 1, further comprising an adapter detachably disposed on a side of the first temperature adjustment plate facing the second temperature adjustment plate for mounting a lidar.
11. The test fixture of claim 10, wherein the test fixture includes a plurality of the adapters for matching different lidars.
12. The test fixture of claim 1, further comprising a spacer disposed on a side of the first temperature adjustment plate remote from the second temperature adjustment plate and configured to adjust a height of the first temperature adjustment plate.

Description

Test fixture Technical Field The disclosure relates to the technical field of laser radar testing, in particular to a testing tool. Background The laser radar detection precision is high, is little influenced by weather and environmental light, can realize all-weather and all-day high-precision detection, and has wide application in a plurality of fields such as automatic driving, field mapping, unmanned aerial vehicle detection and the like. In some application scenarios, the working environment of the lidar is harsh. The working performance of components and the deformation of mechanical structural members in the laser radar can be influenced by the environmental temperature, so that the detection precision of the laser radar is influenced, and the working performance of the laser radar at different temperatures is required to be tested. The working performance of the laser radar at different temperatures can be tested by providing test temperatures in the enclosed space. However, the existing test device has the defects of lower test efficiency and poorer consistency of multiple tests. Disclosure of utility model Aiming at one or more defects in the prior art, the disclosure provides a testing tool for performance testing of a laser radar. The test tool comprises a shell, a first temperature adjusting plate and a second temperature adjusting plate, wherein the first temperature adjusting plate is arranged in the shell, the second temperature adjusting plate is arranged in the shell, at least one of the first temperature adjusting plate or the second temperature adjusting plate is configured to be movable in the shell, the first temperature adjusting plate and the second temperature adjusting plate are arranged at intervals, a containing space is arranged between the first temperature adjusting plate and the second temperature adjusting plate, the size of the containing space is larger than the size of the shell of the laser radar, the containing space is used for containing the laser radar, and the first temperature adjusting plate and the second temperature adjusting plate are configured to change the environment temperature of the laser radar. Optionally, the test fixture further comprises a blowing device configured to jet air towards the window of the lidar. Optionally, the blowing device includes a blowing pipe configured to be bendable such that at least one of a blowing direction or a blowing position of the blowing pipe corresponds to the window. Optionally, the test fixture further comprises a partition plate, and at least a partial area of the partition plate is located between the first temperature adjusting plate and the second temperature adjusting plate. Optionally, the partition plate comprises a fixing piece and an adjusting piece, wherein the fixing piece is attached to the first temperature adjusting plate and is provided with a notch, and the adjusting piece is movably arranged at the notch and shields the notch. Optionally, the second temperature adjusting plate and the fixing piece are clamped at the position of the notch. Optionally, the housing includes a see-through window configured to allow transmission of probe light and echoes of the lidar. Optionally, the shell further comprises an insulation board, the insulation board is connected with the perspective window, or the perspective window is embedded into the insulation board to form a cavity, and the laser radar is located in the cavity. Optionally, the heated board includes planking and inner panel, planking with the inner panel interval sets up to form hollow structure, the hollow structure intussuseption is filled with insulation material. Optionally, the test fixture further includes an adaptor, the adaptor detachably set up in the first temperature adjusting plate is towards one side of second temperature adjusting plate for install laser radar. Optionally, the test fixture includes a plurality of the adapter for matching different lidars. Optionally, the test fixture further includes a spacer, where the spacer is disposed on a side of the first temperature adjustment plate away from the second temperature adjustment plate and configured to adjust a height of the first temperature adjustment plate. Compared with the prior art, the embodiment of the disclosure provides a test fixture. The first temperature adjusting plate and the second temperature adjusting plate are provided with accommodating spaces, and can be used for accommodating the laser radar, and the first temperature adjusting plate and the second temperature adjusting plate can change the ambient temperature of the laser radar and can efficiently adjust the ambient temperature of the laser radar. At least one of the first temperature regulating plate or the second temperature regulating plate is movable in the shell, the size of the accommodating space can be adjusted by changing the position of the first temperature regulating plate or the second temperature