| 摘要 |
PROBLEM TO BE SOLVED: To provide a safe and easy to use earthquake-sensitive heating device, which does not stop heating if man-caused vibration is detected and surely stops heating if seismic vibration is detected, by clearly identifying seismic vibration and man-caused vibration.SOLUTION: Cutoff means E2 cuts heating energy supply to heating means E1 if a cutoff signal is inputted, and keeps the heating energy supply if the cutoff signal is not inputted. Acceleration detection means E4 outputs an acceleration signal by detecting an acceleration of applied vibration. Frequency detection means E5 detects a frequency F of the acceleration signal. Control means E3 outputs a cutoff signal to the cutoff means E2 if a characteristic point, determined by an amplitude A of the acceleration signal and a frequency F of an acceleration signal by the frequency detection means E5, is within a predetermined specific cutoff region Qs, and stops outputting the cutoff signal to the cutoff means E2 if the characteristic point is within a supply region Qt other than the cutoff region Qs. |
