| 摘要 |
<p>PURPOSE: To widen a range and improve precision in detection, etc., of malfunction and resistance value fluctuation, etc. CONSTITUTION: A sensor part which detects differential voltage, generated between points Q and S of a bridge circuit, caused by distortion of distortion resistance elements Ra1-4, and a bridge unbalance generating means which, by throwing equilibrium state of the bridge circuit 1, acceleration, etc., is created in pseudo manner, are provided. The bridge unbalance generating means is inserted between a point P, acting as a fixed potential terminal of the bridge circuit 1, and the Ra1 and Ra2 in series, and in addition, ra1 and ra2 of which resistance values are small, a signal wire branching from a point S, and a constant current source 15 which makes the desired current flow into the signal wire at specified timings are included. When the current is made to flow by the constant current source 15, the differential voltage can be limited within the desired range because it depends on the ra and not on the Ra.</p> |
