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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。
In space camera data acquisition applications, in order to meet the requirements of circuit board volume weight and scalability, the use of FPGA as a master chip to control the camera for data acquisition and transmission. In data communication system, FPGA replaces the traditional microcontroller as the main controller of CAN bus, and gives a detailed hardware circuit design method. In the CAN protocol controller SJA1000 function and timing analysis, the use of hardware language to design their communication process. Practice has proved that under strict timing logic, FPGA can control the CAN bus to send and receive data to and from the camera.