Vehicle-borne scanning semiconductor laser early-warning radar and method for detecting obstacles thereby

Abstract

The invention relates to vehicle-borne scanning semiconductor laser early-warning radar used on a vehicle to detect and calculate the distance and angle of an obstacle ahead and to perform related data processing and warning, and a method for detecting obstacles by the vehicle-borne scanning semiconductor laser early-warning radar. A central line of a receiving optical axis is parallel with a central line of a transmitting optical axis of a laser transmitting antenna sleeve, laser receiving field angle is guaranteed to be approximate to laser transmitting beam divergence angle in design, objective diameter of an laser transmitting antenna is approximate to that of a laser receiving antenna, and accordingly signal attenuation is relieved, the size and weight of equipment is reduced, operational noise of the equipment is lowered, optical axis calibrating process is simpler, product reliability is better, production cost is lower and batch production is facilitated. By the use of the method for detecting obstacles by the vehicle-borne scanning semiconductor laser early-warning radar, information data processing is faster and more accurate and warning is timely.

Description

technical field [0001] The invention relates to a vehicle-mounted scanning semiconductor laser early warning radar and a method for detecting obstacles, which are used for detecting and calculating the distance and angle of obstacles in front of vehicles, and performing related data processing and alarming. Background technique [0002] The current technology for measuring the obstacle information in front of a driving vehicle is divided into two types: millimeter wave radar measurement and semiconductor laser radar measurement. Millimeter-wave radar measurement technology has high production costs and is difficult to promote and use in automobiles. Although there are semiconductor laser radar products, the main features of the products are still limited to laser single-point ranging. For example, the existing automatic anti-collision device for automobiles is installed on the inner side of the front bumper of the car. It uses laser single-point ranging, and the detection...

AI Technical Summary

Problems solved by technology

The disadvantages of the product produced in this way are as follows: the product is bulky and difficult to install; the cam wears seriously during the long-term work process, and the reliability and practicability are not high; Large, it will have an impact on drivers, customers and the surrounding environment; using the method of lens rotation to transmit and receive laser requires a large receiving field of view, and the product volume will increase; if high-end parts and electronic components are used, the performance will be reduced. improved, but the product cost will be high, which is not conducive to mass production

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