What is an autonomous driving system? The automatic driving system refers to the train operation system in which the work performed by the train driver is fully automated and highly centrally controlled. The automatic driving system has functions such as automatic wake-up and sleep, automatic entry and exit of the parking lot, automatic cleaning, automatic driving, automatic parking, automatic opening and closing of doors, automatic fault recovery, etc. . Achieving fully automatic operation saves energy and optimizes a reasonable match between system energy consumption and speed.
The urban rail transit required by the autonomous driving system has a high level of interconnectivity, safety, speed and comfort. Since the 1990s, with the development of communication, control and network technologies, large-capacity, two-way information transmission can be realized between subway cars, becoming a true autonomous driving system for the high-density, large-capacity subway system. provided the possibility.
Features of automated driving systems
The main function of the automatic driving system is the two-way information transmission of the ground vehicle and the synthesis and emergency treatment of the operation organization. The train-ground information transmission channel is an important part of the automatic control system for train operation. The on-board equipment of the automatic control system completely relies on the driving control commands received from the ground control center to drive, and supervises the actual speed of the train and the speed command allowed on the ground in real time. When the speed of the train exceeds the speed limit on the ground, the on-board equipment will implement braking to ensure the safe operation of the train.
The automatic driving system realizes the functions of automatic start and automatic operation of the train, fixed-point parking at the station, automatic driving and automatic return, and automatic entry and exit of the depot. Carry out automatic diagnosis, transmit train equipment status and fault alarm information to the control center, classify various faults and unexpected situations, and make disposal plans.
Key Technologies of Autonomous Driving Systems
The autonomous driving system is a comprehensive system that brings together many high-techs. The environmental information acquisition and intelligent decision-making control as a key link depend on the innovation and breakthrough of a series of high-tech technologies such as sensor technology, image recognition technology, electronic and computer technology and control technology. The rapid development of driverless cars depends on technological breakthroughs and innovations in many aspects.
Key technologies related to autonomous driving systems, including environmental perception, logical reasoning and decision-making, motion control, processor performance, etc. With advances in machine vision (such as 3D camera technology), pattern recognition software (such as optical character recognition programs), and lidar systems (which combine global positioning technology and spatial data), on-board computers can The data is combined to control the driving of the car. It can be said that the advancement of technology has laid the cornerstone for the development of “autonomous driving” of various automakers. On the other hand, there are still some key technical problems that need to be solved in the popularization, including the communication protocol specification between vehicles, the problem of shared lanes by unmanned vehicles, the establishment of a general software development platform, the fusion of information between various sensors, and the matching of vision algorithms. Environmental adaptability issues, etc.
There is no doubt that autonomous driving has become a major disruptive innovation since the invention of the car. Its impact is not only reflected in the automobile industry, but also has a huge impact on social development and the travel system. In terms of autonomous driving track practice, whether it is Huawei, Baidu, or Tesla that makes its own cars, they all find their place before the trend and anchor the foreseeable future.
Post time: May-23-2022