基于超声波无线传感器网络的移动物体计数系统

Mobile Objects Counting System Based on Ultra-sound Wireless Sensor Network

随着经济的飞速发展,移动物体计数系统在展会统计、煤矿安全等国计民生场合发挥着越来越重要的作用。然而,现有计数系统却存在着一些明显不足:系统多采用基于视频检测、红外、压感、热感或者磁感等传统技术,普遍存在着检测准确度低、对环境变化敏感等缺点;同时现有系统多采用有线组网方式来互连多个计数子系统,因而存在部署不灵活、成本高等缺点。针对以上不足,本文提出了一种全新的基于超声波无线传感器网络的移动物体计数系统。该系统利用超声波技术进行移动物体的检测,并采用无线传感器网络互连各子计数系统,具备检测准确、抗干扰能力强、布置灵活、成本低廉等新特点。实验结果表明:该系统能够实现近98%的检测准确率,优于红外、磁感等传统检测手段。

With the rapid development of economy,the mobile objects counting system is playing a more and more important role in domestic area.Its application includes exhibition statistics,mine security system,etc.However,existing systems are insufficient due to the following shortcomings.Firstly,traditional video-based,infrared-based,pressure-based and temperature-based detection methods are widely adopted.These technologies are known for high sensitivity to environmental variations and low detection accuracy.Secondly,existing systems connects distributed subcounting systems with wired lines,which inevitably leads to high deployment costs and low flexibility.In allusion to these deficiencies,this paper proposes a novel mobile objects counting system based on ultra-sound wireless sensor networks.It relies on ultra-sound to detect mobile objects and connects sub-systems using wireless sensor networks,and is featured with high detection accuracy,strong anti-noise capability,low deployment cost and high deployment flexibility.