一种空间相机的数据通信系统设计  

Data communication system design in a space camera

作　　者：张培坤[1,2] 高伟[1] 宋宗玺[1] 

机构地区：[1]中国科学院西安光学精密机械研究所,陕西西安710119 [2]中国科学院研究生院,北京100039

出　　处：《电子技术应用》2011年第1期77-79,83,共4页Application of Electronic Technique

摘　　要：在空间相机数据采集应用中,为了满足电路板体积重量以及可扩展性的要求,利用FPGA作为主控芯片,控制相机进行数据采集和传输。在数据通信系统中,FPGA替代了传统的单片机作为CAN总线的主控制器,并给出了详细的硬件电路设计方法。在对CAN协议控制器SJA1000进行功能及时序分析后,利用硬件语言对其通信流程进行设计。实践证明,在严格的时序逻辑下,FPGA能够控制CAN总线稳定正确地对相机数据进行收发。Data collection in a spcace camera application, to fulfil the demands of the circuit board about size, weight, and scalability, using FPGA as the main chip, control the camera for data collection and transmission. In data communication systems, FPGA replaces the traditional MCU as the main controller of the CAN communication system. And give the detailed hardware circuit design method. After analyzing the CAN protocol controller SJA1000 on function and timing demand, we design its communication flow with the hardware description language. Proctice has proved that, under strict sequential logic, FPGA is able to control the CAN bus to send and receive the camera data accurately and steadily.

关 键 词：空间相机 数据通信 CAN总线 FPGA 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]