基于FPGA的短波红外探测器配置方法研究

Research on Configuration Method of Shortwave Infrared Detector Based on FPGA

针对InGaAs短波红外探测器的配置需求,提出并设计了基于现场可编程门阵列(Field Programmable Gate Array,FPGA)的短波红外探测器配置方法。以FPGA作为核心处理器,利用VHDL语言实现了短波红外探测器的配置功能。通过RS-232接口,可与上位机进行通信和在线发送及调整探测器输出数据的顺序等参数,并通过指令切换探测器的积分之后读出(Integrate Then Read,ITR)工作模式和积分同时读出(Integrate While Read,IWR)工作模式。实际应用表明,本文的配置方法能够使短波红外探测器正常工作,能够灵活调整工作模式和配置参数,满足短波红外探测器的实际应用需要。

According to the configuration requirement of an InGaAs shortwave infrared detector, a FPGA-based configuration method for the shortwave infrared detector is proposed. Taking a FPGA as a core processor, the configuration of the shortwave infrared detector is implemented in VHDL language. A RS-232 interface is used to communicate with the host computer, to send and adjust the parameters such as the data output order of the detector online and to send the instruction for switching the Integrate Then Read （ITR） and Integrate While Read （IWR） operation modes of the detector. The practical application shows that the configuration method can make the detector operate well and adjust the operation mode and configuration parameters of the detector flexibly. It meets the practical configuration requirements of the shortwave infrared detector.