FlexRay总线运载火箭信号采编器接口设计

Study on the Interface Design of Signal Samping Encoder of Launch Vehicle Based on FlexRay Bus

为了满足运载火箭测量系统数据传输量大、时效性高的需求,基于FlexRay总线技术,设计了以龙芯1C 300B为主芯片的运载火箭信号采编器的通信接口单元。从芯片选用、接口实现和软件开发等方面详细介绍了FlexRay总线通信接口的设计过程。测试结果验证了接口设计的正确性,并且在数据量增加时仍能稳定可靠工作,可以满足运载火箭测量系统数据通信需求。

In order to meet the needs of large data transmission and high time efficiency in the measurement system of launch vehicle,this paper designs the communication interface unit of signal samping encoder of launch vehicle based on the FlexRay bus technology,with Loongson 1C300B as the main chip.This paper introduces the design process of FlexRay bus communication interface in detail from the aspects of chip selection,interface implementation and software development.The test results verify the correctness of the interface design,and it can still work stably and reliably when the data volume increases,which can meet the data communication requirements of the telemetry system of the launch vehicle.