RADIATION CHARACTERISTIC OF CLOUD BASED MAGNETOMETER FOR VEHICLE DETECTION

A traffic sensing and monitoring system based on a magnetometer is proposed to work with Arduino pro-mini nRF24L01 mitigate congestion problems. As vehicles pass through the buried underground, microcontroller processes magnetic field changes transmits them by transceiver for data analysis. MIFA antenna resonating at 2.4 GHz incorporated in module transmission purposes. The performance of this simulated using COMSOL commercial software. Approximate 7 dB return loss enhancement found when taper design applied antenna. Since designed radiate GHz, its gain highest (1.22 dBi) frequency too. 3D 2D patterns have shown that radiating omnidirectional, suitable transmitting signals all directions. This further validated Received Signal Strength Indicator (RSSI) measurement, which indicates similar trend signal strength locations distance below 40 m (-87 dBm). When distances increase beyond m, RSSI direction closer flow drops significantly compared other directions where 30 dBm variation detected 100 m.