ILLUMINATION CONTROL DEVICE

摘要

PURPOSE:To automatically recover the same controlled state as just before a power failure when power is recovered by detecting the power failure of a power source using a power failure detecting means, and writting state data just before the power failure in a non-volatile memory. CONSTITUTION:At a microcomputer 1 signals for designating the state of a lamp 2 which are periodically input from a pull switch 6 and a receiving portion 7 are checked and if there is any change in the signals data on the changed state is written in a memory 11. If a power failure detecting portion detects a power failure during action, data on the state of the lamp 2 stored in the memory 11 is read out and a voltage at which the accumulated charge of a power source is a normal value is supplied during the period in which the data is retreated in E<2>PROM9. After power is recovered the data retreated in the E<2>PROM9 is read and the lamp 2 is controlled according to the data. Thereby a controlled state just before the power failure can be automatically recovered when power is recovered.