Abstract: The present invention relates to a device and method for detecting whether a turn signal lamp is operated. A device for detecting whether a turn signal lamp is operated according to the present invention for achieving the object of the present invention comprises (1) an electric power input unit for receiving electric power inputted directly or indirectly from an operating power supply for the turn signal lamp; (2) an AC signal detector connected to the electric power input unit to detect an AC component signal in the voltage of the power supply; (3) a filtering unit for extracting only a signal component having a predetermined period and amplitude from the AC component signal detected by the AC signal detector; and (4) an amplifier for amplifying the signal component extracted by the filtering unit.

Abstract: In a case where an occupant sleeps inside a vehicle for a long time while a heater or the like has been turned on, the occupant may be suffocated to death due to lowered concentration of oxygen within a closed interior space of the vehicle or due to a failure of an exhaust system of the vehicle, and the like. To prevent this, the occupant should be much careful of awaking from his/her sleep by setting an alarm function of an additional clock or the like before he/she sleeps. However, in a case where an occupant sleeps inside a vehicle, particularly after drinking, or an occupant sleeps inside a vehicle at a resting place or the shoulder of a rod due to his/her fatigue after driving for a long time, it is difficult to expect that the occupant would additionally set an alarm in advance to sleep.

Abstract: The present invention relates to a controller for an electric power supply of an electronic device of a vehicle, and more particularly, to a controller for an electric power supply of an electronic device supplied with electric power from a battery of a vehicle. The controller for the electric power supply of the present invention comprises a battery voltage variation detector for detecting voltage variation in the electric power supplied from the battery, and a power control module for allowing the electric power from the battery to be supplied to the electric device when the voltage variation detected by the battery voltage variation detector is equal to or greater than a predetermined level.