基于 FPGA 和 TSC695 F的空间相机控制器设计

摘要

随着空间相机的应用领域从对地观测拓展到行星际探测，对系统的抗辐射能力、重量、功耗和可靠性有了更高的要求。采用耐辐射FPGA RT54SX72S和TSC695F进行了空间相机控制器的设计，用RT54SX72S实现行周期信号产生、OC指令锁存、地址译码及A/D控制锁存等相机控制功能，在提高系统可靠性的同时减小体积、减轻重量、降低功耗。给出了FPGA中各功能模块的具体实现方法和部分VHDL源码。实验结果表明，各功能模块的实现方法正确可行，相机控制器工作可靠，满足总体技术指标要求。%　　The application fields of space camera have extended from earth surveying to planet exploration . As a result,higher demands are put forward on anti-radiation ability,weight,power dissipation and reliability.A space camera controller was designed,in which radiation-tolerant FPGA RT54SX72S and TSC695F.RT54SX72S were used to realize camera control functions such as row period signals generation,OC instruction latch,address decoding,and A/D conversion control latch .In this way,the reliability of the system could be improved,and the weight,cubage and power dissipation could be reduced .Realization methods of each module in FPGA and partial VHDL sources were presented .Results of experiments indicated that realization methods of each module were correct and feasible,and the camera controller worked reliably,which could meet the demand of qualification .