| 摘要 |
PROBLEM TO BE SOLVED: To prevent battery exhaustion and to always keep a reception enable state by changing the reception cycle of a prescribed signal so as to reduce current consumption rather than ordinary time when a prescribed operation is not executed for a prescribed period. SOLUTION: When a received ID code is coincident with the ID code allowed to a device, a CPU 207 of a reception circuit 202 sends an 'engine start/stop signal' from an output circuit 206 through a centralized controller 205 to an ECU 203. That operation and the time of execution are stored in a non-volatile memory 204 as an operation history in the past. When the start/stop operation of an engine is not execution for a long time, for example, based on the operation history in the past stored in the non-volatile memory 204, the CPU 207 changes the reception cycle of 'engine start/stop signal' and 'ID code' from a transmitter so as to reduce current consumption rather than ordinary time. |
