用于无人驾驶车辆的可靠无线数传系统

Reliable Wireless Data Transmission System for Driverless Vehicles

利用意法半导体公司的STM32微处理器和两片射频芯片设计了用于无人驾驶车辆的无线数传系统。首先通过两片工作在不同频率的射频芯片,以两个不同的载波频率实现信息的并行收发,大概率降低了信道干扰;其次每片芯片内部再利用跳频技术,进一步降低了干扰的可能,进一步提高通信的成功率;然后利用微处理器自带的对称加密算法实现了准签名系统,保证了数据的完整性和信息的安全性;最后,测试统计分析验证了数传系统的可靠性和合理性。所设计的通信系统,易于实现,成本低而且可以实现安全可靠的通信。该方法也可以用于对通信可靠性要求较高的其它数传系统中。

In this paper, STM32 microprocessor and two radio frequency chips are used to build a wireless data transmission system for driverless vehicles. First of all, through two pieces of radio frequency chip operating at different frequencies, two different carrier frequencies can be used to achieve the parallel transmission and reception of information to reduce the channel interference. Secondly, the internal use of frequency hopping technology within each chip further reduces the frequency conflict, and further improves the success ratio of communication.Thirdly,the quasi-signature system is realized by the symmetric encryption algorithm of microprocessor, which ensures the integrity of the data and the security of communication. Finally, the reliability and rationality of the data transmission system are verified by the statistical analysis. The communication system designed in this paper is easy to realize and low cost, and the communication is safe and reliable. The proposed method can also be used in other data transmission system which requires high communication reliability to improve the reliability of information transmission.