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Low-delay and low-bit error rate communication system and method for automatic driving automobile
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A technology of automatic driving and low bit error rate, applied in transmission systems, digital transmission systems, data exchange networks, etc.
Active Publication Date: 2020-09-29
朱晶晶
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[0007] The purpose of the present invention is to provide a communication system and method with low delay and low bit error rate for self-driving cars, so as to solve the problems in the prior art
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Embodiment 1
[0063] Embodiment 1: Limited conditions, the external identification signal is sent multiple times at the same time. The sub-module sets the current time for different senders to send the same external identification signal as T 1 , T 2 , T 3 ,...,T n-1 , T n , the time when the same receiver receives the external identification signal is t 1 , t 2 , t 3 ,...,t n-1 , t n , wherein, the time intervals of sending the same external signal are 5s, 7s, 9s, 9s, 11s, 14s, extract the interval time 9s with the same sending interval of the same external signal and the most times, when t n -T n ≥t0, determine that the signal transmission channel is delayed, set the interval between sending and receiving external signals in the current channel to 14s, and set the signal delay rate of the current channel to K, When 35%>30%, delay marking is performed on the channel, and after analyzing different channels one by one, the marked channel is used for statistics.
Embodiment 2
[0064] Embodiment 2: limiting conditions, communication signal expected strength and actual signal strength comparison sub-module setting directional time period communication signal strength is -64dBm, -67dBm, -59dBm, setting The expected signal strength is set to -63dBm, and when -63dBm>D0*(1+30%)=-78dBm, it is determined that the current actual communication signal is within the normal range of signal transmission.
Embodiment 3
[0065] Embodiment 3: Limited conditions, real-time monitoring and statistics of the difference signal bit error rate The sub-module acquires the bit error rate in the channel signal, and sets the current bit error rate Z in different channels 1 ,Z 2 ,Z 3 ,…,Z n-1 ,Z n , obtain the signal delay rate of the current channel with bit error rate for matching, set the current bit error rate of a certain channel detection to 7%, set the current channel signal delay rate K∈[10%, 20%), signal delay The influence rate of the bit error rate on the channel is 3%, and the actual bit error rate of a certain channel is set to Z0, according to the formula:
[0066] Z0=7%*(1-3%)≈6.7% 10%≤K<20%
[0067] Calculate the actual bit error rate of a certain channel at present to be 6.7%, calculate and detect the actual bit error rate in the bit error rate channels one by one, and send the monitoring data to the minimum bit error rate channel mark matching module.
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Abstract
The invention discloses a low-delay and low-bit error rate communication system and method for an automatic driving automobile. The system comprises an instruction signaltransmission rate real-time monitoring module, a signal transmission multi-sender establishing module, a communication signal state adjusting module, a non-overlapping signal contrastive analysis module and an automatic driving automobile virtual scene simulation platform. The instruction signal transmission rate real-time monitoring module is used for monitoring and counting the transmission rates sent by different instruction signals; the signal transmission multi-sender establishing module is used for establishing a plurality of senders for each signal to send the signals; the communication signal state adjusting module is used for monitoring the state of the current communication signal; the non-overlapping signal comparison and analysis module is used for monitoring and analyzing error codes of communication signals in different channels, and the automatic driving vehicle virtual scene simulation platform is used for testing data monitored by all modules by constructing a virtual platform. The invention aimsto perform channel optimization after monitoring a communication network in an automatic driving vehicle.
Description
technical field [0001] The invention relates to the field of automobile automatic driving, in particular to a communication system and method for an automatic driving automobile with low delay and low bit error rate. Background technique [0002] Self-driving car, also known as unmanned car, computer-driven car, or wheeled mobile robot, is a kind of intelligent car that realizes unmanned driving through a computer system. It has a history of several decades in the 20th century, and it has shown a trend close to practicality in the early 21st century. [0003] Self-driving cars rely on artificial intelligence, visual computing, radar, monitoring devices, and global positioning systems to work together to allow computers to automatically and safely operate motor vehicles without any active human intervention. [0004] Vehicle self-driving technology includes video cameras, radar sensors, and laser rangefinders to understand surrounding traffic conditions and navigate the road...
Claims
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