针对家庭防盗报警系统要求可靠性高、抗干扰能力强、体积小、误报率低、便于调试等特点,设计实现了一种基于AT-mega128的红外图像报警系统;首先介绍系统的总体结构,其中系统采用高性能的AVR单片机ATmega128并结合技术成熟的CMOS图像采集与JPEG图像压缩技术来实现;然后重点阐述系统的工作原理、硬件组成及软件实现方法,详细介绍了系统实现过程中的关键技术;最后在不同光照下对系统进行了测试;测试结果表明:该系统具有测量精度高,运行稳定,实时性好、性价比高,具有一定的实用价值.%An infrared image alarm system is designed and implemented in order to meet the demands of family security-monitoring alarm system-high reliability, strong anti-interference ability, small volume, low error rate and debugging convenience. First about the general structure of the system, it is realized by the high-performance AVR MCU ATmega128 and the mature technique of the CMOS Im age Collecting System and JPEG image compression. Then it expounds emphatically the working principle and implementation method of hardware and software, and gives a detailed description on the key technology during the system design course. The last part is about system test in different illumination. The test result shows that this system has high measuring accuracy, stable operation, good real-time and high performance-price ratio, and it has certain practical value.
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