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electromagnetic sensor sensitive to a change of a magnetic field and its application in road traffic
electromagnetic sensor sensitive to a change of a magnetic field and its application in road traffic
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机译:对磁场变化敏感的电磁传感器及其在道路交通中的应用
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摘要
An electromagnetic detector designed to monitor road traffic, responsive to a modification of an electromagnetic field produced by the presence of a metallic mass in the vicinity thereof, comprises a metal base on which are disposed a transmitting coil creating a field and a receiving coil whose axis deviates from the perpendicular to the base. The receiving coil detects a measuring field created by the currents induced in the base by the transmitted field. The processed signal is the resultant of the signal produced by the presence of a metallic mass in the transmitted field and by the signal due to the measuring field.
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