WIRELESS SENSOR NETWORKS FOR METROPOLITAN SCALE EXPLOSIVES DETECTION

Abstract

In the guerilla and urban warfare, explosives are being delivered to target locations using vehicles forcing the authorities to come up with different techniques to stop the bloodshed in public places such as airports, shopping malls, and others. Such techniques include employing people to do the task of scanning entering vehicles using handheld sensing devices, which may cost money as salaries, threaten the employees’ lives directly, and the response time could be late due to the human factor delay. Other techniques involve building a Wireless Sensor Network (WSN) in which every sensor node detects any suspicious materials within its range and report that to a local monitory station through the sensor network, an effective technique; however it may not cover large areas due to the wireless transmission range of wireless sensor nodes. A model of integration between WSN and Internet of Things (IoT) that combines the advantages of using the WSN for explosive detection with the advantages of wide coverage of internet is was proposed. The proposed technique has shown promising results in terms of end-to-end delay of response time between sensors and the metropolitan-wide management which have not exceeded the value of 0.28 seconds. The system also has shown that the management can take action based on different measures such as received traffic at each local location, and radio state of sensors.