采用虚拟仪器产生热释电IRFPA电路驱动信号方法

The New Method of Creating Driving Signals of Pyroelectric IRFPA Readout Circuit Using Virtual Instrument

采用虚拟仪器技术,构建基于计算机硬件和LabVIEW软件平台的虚拟仪器系统,能对热释电红外焦平面阵列(IRFPA)读出电路工作时序、逻辑关系的驱动控制。该系统控制PCI数据采集卡输出驱动信号。实验结果表明,该方法是可行的,并具有软件可编程能力,突破了传统利用CPLD技术的方法。

The driving signals of pyroelectric infrared focus plane array （IRFPA） drive and control its readout circuit to work in proper sequence and logical relationship, and can control the infrared signal to output and process in a certain time sequence effectively. To decrease the hardware resource, virtual instrument technology is used, and virtual instrument system based on computer and the software of LabVIEW is constructed. The system controls PCI data acquisition card to output the needed driving signals. The results of experiment indicate that the method is feasible, and it has the software-programmable ability. Moreover it changes the method based on CPLD technology.