| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reverse drive prevention device installed at the way-out side of escalator and the like. <P>SOLUTION: The reverse drive prevention device includes a sensor section 2 composed of a first sensor and a second sensor arranged at a predetermined interval in a forward direction along a passage at a way-out side, a control section capable of receiving detection signals from the first sensor and the second sensor, and an alarm 24 emitting an audible alarm controlled from the control section where the control section includes a decide means deciding that a user progresses in the forward direction when the detection signal is received from the second sensor after receiving the detection signal from the first sensor while deciding that the user progresses in the reverse direction when the detection signal is received from the first sensor after receiving the detection signal from the second sensor, and the alarm means controlling the alarm section 24 to emit the audible alarm when the reverse progressing of the user is decided. <P>COPYRIGHT: (C)2012,JPO&INPIT |
