| 摘要 |
PROBLEM TO BE SOLVED: To provide a door position detection device capable of improving reliability while detecting a door position with a high degree of precision.SOLUTION: A door position detection device D includes a permanent magnet 10 provided to a door 81 that forms a magnetic field, a magnetic sensor 20 provided to a case 82 that detects the strength of the magnetic field, and a position detection circuit 40 that detects the position of the door 81. The strength of the magnetic field that the magnetic sensor 20 detects is configured to change with the movement of the door 81. The position detection circuit 40 detects the position of the door 81 based on the strength of the magnetic field that the magnetic sensor 20 detects.SELECTED DRAWING: Figure 1 |
