摘要
文中提出了 32 0× 2 4 0红外非制冷焦平面驱动电路及焦平面阵列模拟输出信号的数字化设计方法。采用Xilinx公司的XC950 0系列综合可编程逻辑器件设计时序电路 ,以实现电路的小型化。采用VHDL语言进行设计 ,便于在试制过程中对电路的逻辑进行修改。采用TI公司的A/D转换器THS140 8对焦平面输出的 5.5M模拟信号进行模数转换 ,降低了后续传输过程中的干扰。为 32 0× 2 4 0凝视型非制冷红外热像仪的研制打下了基础。
The design method of the drive circuit of 320×240 uncooled infrared focal plane array (UFPA) and circuits of converting the analog output of UFPA to digital signal are proposed. Xilinx's XC9500 Series complex programmable logic device is adopted to design the timing circuit so that the drive circuit could be made in miniature design. It's flexible and easy to use VHDL language to design and make change in the research progress. TI's A/D converter THS1408 is used to convert the 5.5M analog output of UFPA to digital signal right after the UFPA, so that the transfer disturbance is greatly reduced. This paves the way for the production of 320×240 staring uncooled IR thermal imager in China.
出处
《红外与激光工程》
EI
CSCD
北大核心
2001年第3期230-234,共5页
Infrared and Laser Engineering
基金
武汉科委资助项目 (991 0 0 2 0 37G)
