Journal of Computer Applications (计算机应用) 2013/33:12 PP.3477-3481
A communication system with several serial ports was developed to realize the communication between On-Board Computer (OBC) and cameras in micro-satellite simulation system. The system was designed in Host-Target model. The Host sever managed the multiplex communications between the host and its clients. It also sent out trigger signal to control five cameras through a Field Programmable Gate Array (FPGA) chipset. In addition, a multiplex serial communication protocol based on RS-232 protocol was proposed to complete the communication. The logic analytical tool SignalTapⅡ was used to capture the real-time signal of FPGA to verify the performance of the system. The results indicate that the system can control and manage a single camera or multiple cameras flexibly.