Flexible pressure capacitor sensor based on polyurethane

Vehicles detection on the roads can aid in developing an intelligent transportations system that allows smooth movement while also reducing road accidents. There hasn't been a polymer flexible sensor with a low cost for vehicle detection till now. A polyurethane substance was sandwiched between aluminum top/bottom electrodes to create a vehicle sensor. The sensing mechanism relied on capacitance fluctuations caused by altering the electrode space when an external pressure was applied. The response was recorded at a pressure load of 0.60 MPa, equivalent to the pressure exerted by an automobile tire's contact area with the road. Due to its dimensions and mechanical adaptability, the sensor was exceptionally easy to install on the roadway. The sensor was embedded in the road and driven over to conduct a field test. Additionally, the signal from the tablet suggested that the sensing device could be used to wirelessly determine the axle, weight, and speed of an automobile while it is moving. The results show that, as a low-cost vehicle detector, the flexible pressure sensor might prove to be a helpful instrument for intelligent transportation management going forward.