摘要
针对射频EAS系统的低检测灵敏度、高误报率等缺陷,设计了一种基于DSP的声磁EAS系统。阐述了系统检测装置的硬件结构及工作时序,分析了声磁标签信号的特征,提出了一种声磁标签信号的检测方法。经过实验测试,系统的抗干扰性能、检测率、误报率等特性都比射频系统有显著的改善。
An acousto-magnetic EAS system based on DSP is designed owing to low detection sensitivity, high false alarm rate and other defects in RF EAS system. The hardware structure and timing sequence of the detection device are expounded, the characteristics of acousto-magnetic labels signal are analyzed and then a detection method of acousto-magnetic signal is given. The practice test proves that the anti-interference performance, the detection rate, the false alarm rate and other characteristics are significantly improved than the RF system.
出处
《电声技术》
2013年第5期62-65,共4页
Audio Engineering
