双谱段成像探测系统的多线程设计与实现

Multiple Tasks’ Design and Implementation for Double Spectral Imaging and Detecting System

提出一种应用DSP/BIOSTM进行多任务调度的嵌入式控制系统,该系统解决了双谱段电晕探测系统中的多传感器控制以及图像数据处理等任务的响应以及切换,实现了多CCD的实时控制与数据处理.基于DSP/BIOS的双谱段电晕探测嵌入式系统采用多线程技术,实现了利用可见光和太阳日盲区紫外光联合对电晕的探测以及定位功能.系统的可靠性和实时性均优于现有不含DSP/BIOSTM的DSP控制系统,其软件功能扩展后可用于诸如现场检测、监视等多传感器控制的场合.

An embedded system with multiple digital signal processors （DSP） based on a digital signal processor/basic input output system （DSP/BIOS）, which is a kind of real-time operating system, for corona detection via double spectral method was introduced. Multiple tasks in the corona detection were processed v/a a multiple threads technology to develop the system. Sensors＇ control data and image data were processed respectively and many tasks in corona detection were processed smoothly and real-timely on this system. Both hardware and software of the system were introduced. Real-time corona detection via its solar-blind ultraviolet image and corona location via background＇ s visible image were realized by means of this system with small cube, high real-time ability, easy-expanding characteristics and high reliability. It is better than the other embedded system based on DSP without DSP/BIOS in the aspects of reliability and real-time ability. For the system is based on DSP/BIOS, it is convenient to expand the system via development tools and make it suitable for multiple-sensor systems, such as supervising system, detecting system and etc.