| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve detection accuracy of a position of a detected part, in a position detector.SOLUTION: A control part determines that there is abnormality in an unlock side Hall Effect IC 17 when a voltage detected by a lock side Hall Effect IC 16 is equal to or more than an unlock detection threshold Th2 even detection result of the unlock side Hall Effect IC 17 is that there is changeover from an OFF voltage to an ON voltage. The abnormality means that the unlock side Hall Effect IC 17 detects the ON voltage not due to approach of a lock bar 11 but due to failure or disturbance magnetic field. Therefore, immediately after start of movement of the lock bar 11 from a lock position to an unlock position, even the unlock side Hall Effect IC 17 becomes an abnormal state at a position P1 in Fig.3, for example, the abnormality of the unlock side Hall Effect IC 17 can be found.</p> |
