ACCELERATION AND MAGNETIC DIRECTION DETECTING COMPOSITE SENSOR AND ACCELERATION AND MAGNETIC DIRECTION DETECTING DEVICE

摘要

[PROBLEMS] To provide a small, lower-cost sensor for detecting an acceleration and a magnetic direction with high accuracy with small burden on the control computing section and a detecting device. [MEANS FOR SOLVING PROBLEMS] An acceleration and magnetic direction detecting composite sensor device comprises a base (1), three magnetism detecting elements (2, 3, 4) fabricated on the base (1), a cross-shaped elastic beam section (5) fixed at its one end to the base (1) through a fixing section not shown, a weight section (6) attached to the central portion of the elastic beam section (5), and an exciting coil (7) formed on the lower surface of the weight section (6). The device further comprises a control computing section (8) for controlling supply of the exciting current to the exciting coil (7), receiving the outputs of the magnetism detecting elements (2, 3, 4), and computing the acceleration and the magnetism direction according to the outputs of the received magnetism detecting elements (2, 3, 4).