弹上RS485总线通讯质量研究

Communication Quality of Missile RS485 Data Bus

RS485总线因其电路简单、抗干扰能力强等优点广泛应用于导弹型号,随着导弹性能的提升,对弹上总线通讯的可靠性提出了更高要求。结合RS485总线在导弹型号的应用情况,制作了不同拓扑结构的总线电缆,进行了总线通讯特性研究,分析了影响弹上RS485总线通讯质量的因素,结合试验研究,提出了提高弹上RS485总线通讯质量的方法。

RS485 Data Bus has been used widely in missile because of its advantages with ordinary circuitry and powerful antijamming ability. Higher requirements are put forward on reliability of data bus with the increasing performance of missile. Different bus cables are manufactured combined with its use in missile, and communication characteristics are studied. The factors which influence the communication quality of RS485 data bus are analyzed, measures which can improve the communication quality of mis- sile RS485 data bus are proposed according to the experimentation result.