Vehicular millimeter-wave train collision avoidance radar system

Abstract

The invention provides a vehicular millimeter-wave train collision avoidance radar system which comprises a frequency synthesizer module, a transmitting module, a receiving module, an antenna feeder module, and a signal processing module. The frequency synthesizer module is used for generating X-band transmitting excitation signals and X-band receiving local oscillator signals. The transmitting module is used for doubling the frequency of the X-band transmitting excitation signals to Ka band. The antenna feeder module comprises a transmitting antenna, Kn receiving antennas and n single-pole K-throw switches. Each two adjacent K receiving antennas are connected with the receiving module through one single-pole K-throw switch. The receiving module comprises n receivers. Each receiver is connected with one single-pole K-throw switch in the antenna feeder module. The signal processing module is used for processing the received signals to obtain the distance, speed and angular information of a target, and transmitting the information to a train central control system. The train central control system issues stop commands to trains. The vehicular millimeter-wave train collision avoidance radar system is installed on the train and is capable of accurately detecting obstacles in front of the train to well functionally avoid train collision.

Description

technical field [0001] The invention relates to a vehicle-mounted millimeter-wave train anti-collision radar system, which belongs to the technical field of anti-collision radar. Background technique [0002] As of 2010, the national railway operating mileage has reached 91,000 kilometers, including 8,358 kilometers of high-speed railways. In 2011, the national high-speed railway network will be initially formed, and the operating mileage will exceed 13,000 kilometers, accounting for more than half of the world's total mileage of high-speed railways. The absolute safety of railway transportation is not only the most important symbol of the development level of the railway transportation industry, but also a major issue related to the national movement and people's livelihood. The high-speed and high-density characteristics of my country's booming high-speed railway transportation system require that major safety accidents never occur . [0003] On July 23, 2011, a particular...

AI Technical Summary

Problems solved by technology

However, because the application requirements and background of automobile anti-collision radar are very different from those of train anti-collision radar, its short detection distance cannot meet the requirements of high-speed railway early warning distance, so the technology and products based on the background research of automobile anti-collision application are not applicable railway traffic safety system

Images