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To acquire traffic status of roads, self-healing and self-calibration techniques for a new intelligent vehicle detector were studied. The vehicle detector uses geomagnetic sensors as their sense organ. By pulsing a large current through the set/reset strap in geomagnetic sensor the self-healing of the detector sensitivity was implemented. By driving a defined current through offset strap in geomagnetic...
This paper basically studies on Yangxi road (including Shuxi road and Xixin road), Chengdu city. It creatively designs an index plate of the detector and electric power. Then, the traffic survey is taken by using microwave vehicle detector to collect data of flow (Q), speed (V) and density (K). After that, it draws the diagram of traffic flow time-space and the relation curve of Q, V and K. Finally,...
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