| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio proximity sensor system capable of performing communication between a controller side radio part and a sensor side radio part while simultaneously achieving the securement of security and the reduction of current consumption. SOLUTION: The radio proximity sensor system 1 is provided with a radio proximity sensor set 1, 3, a sensor set 4, 1, a sensor set 2, 4, and a sensor set 2, 3 being at least one set of two sensors for transmitting a proximity detection signal of work 18 in close proximity to respective positions A to D with different frequencies to each of the positions A to D of the work 18 process, and a controller side radio part 5 which can receive transmission frame information of different frequencies respectively transmitted by the radio proximity sensor sets at each of the positions A to D. COPYRIGHT: (C)2009,JPO&INPIT
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