Which Digital-Output MEMS Magnetometer Meets the Requirements of Modern Road Traffic Survey?

Present systems for road traffic surveillance largely utilize MEMS magnetometers for the purpose of vehicle detection and classification. Magnetoresistive sensing or LR oscillation circuitry are technologies providing the sensors with the competitive advantage which lies in the energy efficiency and low price. There are several chip suppliers on the market who specialize in the development of these sensors. The aim of this paper is to compare available sensors from the viewpoint of their suitability for traffic measurements. A summary of the achieved results is given in the form of the score for each sensor. The introduced sensor chart should provide the audience with knowledge about pros and cons of sensors, especially if intended for the purposes of road traffic surveillance. The authors in this research focused on the specific situation of road traffic monitoring with magnetometers placed at the roadside.

Automated summary

This study compares the suitability of available sensors for road traffic surveillance, focusing on factors such as efficiency and price of magnetometers. The results are summarized by scoring each sensor, providing the audience with information about the pros and cons of sensors. The study specifically looks at the use of magnetometers for road traffic monitoring placed at the roadside.