Network Of Remote Sensors for Magnetic Detection

A network of remote magnetic sensors is used for detection of ferromagnetic objects. The magnetic sensors are arranged in gradiometric pairs in order to cancel background noise. For an effective noise cancellation the sensors´ readings are synchronized by a smart synchronization technique. Data from the sensors are transmitted via a wireless link, managed by an intelligent access protocol. The data are collected by a wireless acquisition unit which transfers it serially to a monitoring station for further processing. The monitoring station consists of a PC that runs an advanced detection algorithm which extracts a signal of magnetic dipole out of a background noise. An additional feature is the ability to distinguish between targets and false alarms.