| 摘要 |
PURPOSE:To prevent malfunction radio reception at the controller side due to surrounding noise or the like even if both hands are not used by operating an external switch with a part of a body such as a foot or a knee only when the input of voice information is required. CONSTITUTION:A power switch 39 is operated so as to apply a power supply 36 at first. Then an external switch 50 is operated so as to bring the state to a state possible for transmission and reception. The external switch 50 is operated by treading on the external switch 50 in case of a crane and depressing it by an elbow or a knee in case of a faulk lift. When a worker utters required information toward a microphone 33 with the external switch 50 turned on, the voice of the worker is converted into an electric signal at a transmitter 31 of a radio movable station 30 and transmitted to a radio fixed station 20 as a radio wave from an antenna 34. The fixed station converts the said radio wave into a voice so as to allow the voice controller 11 to conduct a prescribed processing. |
