26-08-2017, 04:51 PM
One of the important strategies of national security is border control. In particular strict and effective surveillance to control illegal immigration is a key strategy to maintain public safety and a healthy local economy and is essential to prevent the entry of terrorists. Here, we focus on developing a method to detect a person attempting to illegally cross the border by hiding in a car. The proposed method is based on pneumatics. A silicone tube (inner diameter 4 mm) with one end capped by a highly sensitive pressure sensor and the other capped end is sandwiched between two rigid plates and placed on the ground at the edge entrance door. When a car wheel is on the dashboard and the engine is stationary, the pressure sensor can detect human vital signs such as heartbeat, which can not be hidden. Due to the high sensitivity of the pressure sensor, the effect of external disturbances such as ground vibration and wind force acting on the car were considered.