RADIATION CHARACTERISTIC OF CLOUD BASED MAGNETOMETER FOR VEHICLE DETECTION

Authors

  • S. K. Yee Research Center for Applied Electromagnetic, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia https://orcid.org/0000-0002-3132-2331
  • M. C. Teoh Microelectronics and Nanotechnology-Shamsuddin Research Centre, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia https://orcid.org/0000-0002-6126-4558
  • Z. Z. Abidin Advanced Wireless Communication Research Centre (ATRC), Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia https://orcid.org/0000-0002-7774-6703
  • S. H. Dahlan Research Center for Applied Electromagnetic, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia
  • M. R. Anuar Research Center for Applied Electromagnetic, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia
  • K. S. Tee Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia
  • D. Lim SENA traffic system Sdn. Bhd., 30, Jln Radin Bagus 3, Bandar Baru Sri Petaling, 57000 Kuala Lumpur, Malaysia
  • C. H. See School of Engineering & the Built Environment, Edinburgh Napier University, United Kingdom
  • H. Zhang School of Engineering & the Built Environment, Edinburgh Napier University, United Kingdom
  • Y. Zheng School of Environment and Civil Engineering, Dongguan University of Technology, China
  • C. F. Soon Microelectronics and Nanotechnology-Shamsuddin Research Centre, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia https://orcid.org/0000-0002-4972-5729

DOI:

https://doi.org/10.11113/jurnalteknologi.v85.19090

Keywords:

Traffic sensing, magnetometer, nRF24L01, MIFA antenna, Received Signal Strength Indicator (RSSI)

Abstract

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

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Published

2023-02-23

Issue

Vol. 85 No. 2: March 2023

Section

Science and Engineering

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Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.

How to Cite

RADIATION CHARACTERISTIC OF CLOUD BASED MAGNETOMETER FOR VEHICLE DETECTION . (2023). Jurnal Teknologi, 85(2), 167-174. https://doi.org/10.11113/jurnalteknologi.v85.19090