Door pinching detection system using door end rubber with built-in pressure-sensitive sensor and non-contact power supply

On railway vehicles, when passengers get on or off, their luggage and other objects can get caught in the doors. If the object caught is large, the pinching of the object is detected by the current door pinching detection device (DPDD). In such a case, the vehicle will not be able to move. On the other hand, it is difficult to detect the pinching of narrow inclusions with the current DPDD. As a result, there is a possibility that the vehicle moves with the inclusion pinched in, or that the inclusion will cause the passenger to be dragged. Therefore, in order to detect these events, we have developed a door pinching detection system (DPDS) using a door rubber with a built-in pressure-sensitive sensor (DRBPS). The DRBPS can detect the pinching of inclusions with a diameter of 8 mm or larger, and can detect dragging that occurs outside the vehicle with a load of approximately 150 N or less. The DPDS can easily transmit the detection information obtained by the DRBPS to security equipment using a non-contact power supply, and can be easily installed in existing vehicles. The results of one year of operation with DPDS installed in real vehicles showed that no missed detections or false detections occurred, although some detections were caused by contact with the low-risk rubber end of the door.