| 摘要 |
This invention relates a vehicle detecting system based on ground sense coil, mainly comprising a sense coil and a vehicle detector. The ground sense coil possesses a driving and detecting unit while the vehicle detector has central processing unit (CPU). The drive, the detecting unit and the CPU own separate power supply circuits, there are filter circuits on the input terminal of the CPU and/or on the input terminals of the drive as well as the detecting unit, and common input terminal used to connect external power supply circuit. A voltage regulator circuit can be employed on the power supply circuit of the CPU and will be placed in the same electromagnetic shielding shell with the CPU. This invention has simple structure, is convenient to use and effectively avoids interference of the ground sense coil to the CPU. This invention can be applied on roads or other locations that the vehicles pass to detect the vehicles as well as the traffic condition.
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