Abstract
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 sensor the self-calibration was brought to success. Experiments on self-healing and self-calibration were carried out, experiments results show that the techniques above mentioned can solve self-healing and self-calibration problems for the intelligent vehicle detector.