Method for detecting solid-state laser radar device

Abstract

Provided in the invention is a method for detecting a solid-state laser radar device. The method comprises: one single laser light source in an array laser device in a transmitting module works to emit detection light; step two, one column corresponding to the single laser light source working in the previous step in an array photoelectric sensor works; step three, the working column in the arrayphotoelectric sensor receives detection light reflected by a detected object; step four, a signal processing module reads electrical signal information received by the working column in the array photoelectric sensor, a signal processing module compares detection light emitted by the transmitting module with the detection light reflected by the detected object and received by the column in the receiving module to obtain a time difference, and a distance value is calculated based on a pulse flight time method; and step five, the previous four steps are repeated; a main control module controls different single laser light source in the array laser device to work when the step one is repeated each time; after each of all single laser light sources in the array laser device in the reflection module works at least once, one-frame point cloud distance data detection of the solid-state laser radar device is completed.

Description

technical field [0001] The invention relates to the technical field of laser radar measurement, in particular to a detection method of a solid-state area array laser radar device. Background technique [0002] The optical scanning ranging device is a device that uses collimated light beams to perform non-contact scanning ranging through time of flight (TOF for short), triangulation and other methods. At present, a common optical scanning ranging device includes: a light emitting module, an optical lens, and a chip for receiving and processing signals. The light emitting module emits light beams, and the optical lens is located on the optical path of the light emitting module. The collimated light beams are emitted to the surface of the object to be measured. When encountering obstacles, the light beams are reflected to the receiving chip, and the receiving chip transmits to the receiving space through measurement. The time, phase difference, and known speed of light can be ...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a solid-state area laser radar device, through the setting of the fixed position of the transmitting module and the receiving module, it solves the problem that the traditional laser radar has a structure of mechanical rotation and an encoder, the structure is complicated, the space is large, and the assembly is difficult. The problem of numerous processes; through the setting of a single laser light source emitting laser light according to the set order and interval, and the structure of the area array photoelectric sensor controlling some or all pixels to receive the laser light emitted by the corresponding single laser light source, the detection of the laser radar device is expanded area, realizing long-distance large area array laser ranging, and providing an environmental detection device with better stability, better accuracy and higher efficiency that can cover a large area for a long time and a long distance

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