16-07-2020 дата публикации
Номер: US20200227216A1
Принадлежит:
Disclosures of the present invention describe a switch device has a controlling and processing unit comprising a first zero point detector, a second zero point detector, an arc detector, and a microcontroller. According to zero crossing point of input voltage signal, zero crossing point of output voltage signal, relay's delay time, and arc-spark-induced signal, the microcontroller is capable of adaptively generating a relay controlling signal to control the relay, such that the relay achieves a short-circuit switching at the zero cross point of output voltage signal for making the output voltage signal be transmitted to at least one load device. Moreover, the microcontroller is also able to control the relay to finish a short-circuit switching at the zero cross point of input voltage signal, so as to stop the output voltage signal from being transmitted to the load device. 1. A switch device capable of automatically detecting and adjusting zero crossing point , comprising:an input voltage detecting unit, being coupled to an AC power source for detecting an input voltage signal supplied by the AC power source;an output voltage detecting unit, being electrically connected to a load connecting terminal of a relay, so as to detect an output voltage signal from the load connecting terminal; wherein an input terminal of the relay is coupled to the AC power source; and a first detector, being configured for detecting a zero crossing point of the input voltage signal;', 'a second detector, being configured for detecting a zero crossing point of the output voltage signal;', 'an arc detector, being configured for detecting an arc-spark-induced signal from the output voltage signal; and', 'a microcontroller, being coupled to the first detector, the second detector and the arc detector;, 'a controlling and processing unit, being electrically connected to the input voltage detecting unit, the output voltage detecting unit, and the relay, and comprisingwherein the microcontroller ...
Подробнее