| 摘要 |
<P>PROBLEM TO BE SOLVED: To stop traveling of a car, by utilizing a sound collector such as a microphone, even in an abnormal situation wherein a device for preventing elevator departure with the door opened is not operated normally allowing the traveling of the car, when the car travels with the door opened. <P>SOLUTION: An acoustic signal obtained by the in-car microphone 1 attached to a proper position and an entrance side microphone 2 is fed to a signal processor 4 via a microphone signal line 3, when the car travels under the car door-opened state, and stops the traveling of the car by applying forcibly braking, when a voice level of the in-car microphone 1 is higher than a voice level of the entrance side microphone 2 and when the voice level of the in-car microphone 1 is higher than a threshold value or more. <P>COPYRIGHT: (C)2012,JPO&INPIT |
