Line laser non-scanning automobile anti-collision radar

Abstract

The invention relates to a line laser non-scanning automobile anti-collision radar which is composed of a transmitting end, a receiving end and a control system.The transmitting end comprises a laser device, a collimation lens and a cylindrical lens.The transmitting end is fixed to an automobile, and a laser is transformed into a line beam through the cylindrical lens and irradiates the part in front of the automobile.The receiving end comprises a focusing lens and an area array CCD, and the receiving end is fixed to the top of the automobile through a support.A target reflecting signal is focused on the area array CCD through the focusing lens, a line image is formed on the photosensitive face of the area array CCD, and the signal is collected by a micro-type computer and processed to generate a target distance image.The line laser non-scanning automobile anti-collision radar is simple in structure, easy to process and debug, low in production cost and easy to operate; combining with the processing method of threshold value filtering and extreme value extracting, high-resolution and high-sensitivity obstacle detection can be achieved, and the line laser non-scanning automobile anti-collision radar is suitable for real-time automobile anti-collision.

Description

technical field [0001] The invention belongs to the technical field of laser detection instruments, and relates to a line laser non-scanning anti-collision radar for automobiles. Background technique [0002] Automobile anti-collision radar is a safety guarantee device that provides collision warning during driving. It can measure the real-time distance of obstacles in front of the car. Through high-speed analysis and processing of ranging data, it can provide early warning prompts for the driver or directly control the speed of the car. , At present, automobile collision avoidance radar is widely used in high-end automobiles. [0003] At present, the systems that can be applied to automobile collision avoidance mainly include: ultrasonic collision avoidance radar, microwave, millimeter wave and laser ranging radar, etc. Ultrasonic anti-collision radar has simple structure, low price, small size and light weight. The disadvantage is that it is easily affected by atmospheric...

AI Technical Summary

Problems solved by technology

The solution of applying laser radar with line beam non-scanning mode to the automobile anti-collision system is characterized by overcoming the shortcomings of the current automobile anti-collision system on the market that it is difficult to determine the precise direction of obstacles, and the anti-collision effect is better. Chinese patent 201510633517.9 is disclosed A car lane-changing anti-collision lidar system is proposed. The pulsed laser is used as a light source and emitted at a fixed frequency. Through the laser echo time, the distance to the surrounding cars is measured.

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