AC 0.1W AC TRIAC switch device with PIR sensor less than 0.1W standby power

摘要

The present invention relates to an electronic switch device with a universal pyroelectric infrared (PIR) motion sensor using commercial AC power. The electronic switch device with a PIR motion sensor is operated with an illumination sensor and the like to turn on a connected lighting device while motion of a person is detected and turn off the connected lighting device when the motion of a person is not detected, thereby being used for power saving. Since a conventional PIR motion sensor type electronic switch device consumes a standby power of 0.4 to 0.5 W required for operating the sensor, power-saving effect is low. Moreover, when a sensor light is formed as linked with a universal LED lamp with a power factor of 95% or more as a load, the power factor is lowered to 60 to 70% such that an LED sensor lamp requiring a power factor of 90% or more cannot be formed and used. Accordingly, according to the present invention, the PIR motion sensor type electronic switch device applies a single-chip microprocessor to a signal analysis unit to minimize consumption of a DC operational power source, and includes an AC/DC operational power conversion unit realizing total conversion efficiency with at least 20% or more from a high voltage AC input to a low voltage DC voltage through a two-stage power conversion function of primary switching conversion and secondary linear conversion so as to consume the standby power less than 0.1 W. Moreover, since power factor degradation of a universal LED lamp interlocked as a load is limited within 1%, the electronic switch device is interlocked with a universal LED lamp with a power factor corrected to 91% or more, thereby forming and using an LED sensor lamp suitable for a specification.