红外热成像系统的采集与驱动电路设计

高精度采集电路是构成高精度红外热像仪的重要组成部分.在简单介绍红外热成像系统基本原理的基础上,给出了用法国ULIS公司的384×288元非致冷红外焦平面阵列探测器设计的红外成像系统的硬件构成.该系统采用CPLD复杂可编程逻辑器件作为采集与驱动时序电路的核心控制芯片,以VSP2566作为采集芯片,把探测器输出的模拟信号转...

Design of Acquisition and Driving Circuit for Infrared Thermal Imaging System

A high precision acquisition circuit is an important component of a high precision infrared thermal imager.The basic principle of an infrared thermal imaging system is described in brief.The hardware structure of an infrared imaging system using a 384×288-pixel uncooled infrared focal plane array produced by ULIS company is given.The system uses a Complex Programmable Logic Device (CPLD) as the core control chip of its acquisition and driving circuit and uses a VSP2566 as its acquisition chip.The acquisition chip converts the analog signal output from the detector into a 16-bit digital signal and then sends the digital signal to a Digital Signal Processor(DSP) for further processing and displaying. Compared with the scheme which directly uses the 12-bit digital output of the detector,this design has higher temperature measurement accuracy and higher imaging quality.