Tokyo Electron Limited

Avaldata Corporation

Tomoya Bessho

Shiro Hayashi

Akitsugu Noguchi

Junichi Harada

Akihito Mitsumine

There is provided a wireless communication system for transmitting periodic data from a first device to a plurality of second devices by wireless communication comprising: a first wireless device connected to the first device; and a plurality of second wireless devices connected to the plurality of second devices, respectively, wherein the first wireless device includes a first wireless portion and a first control portion, the second wireless device includes a second wireless portion and a second control portion, and the first control portion and the second control portion synchronize the first wireless device and the plurality of second wireless devices when a time until the first wireless device receives a response from the second wireless device after the first wireless device has transmitted the periodic data from the first device is equal to or less than a set value.

Wireless communication system, wireless communication method, control device, and control method

An abnormality detection method according to one aspect of the present disclosure is a method of detecting an abnormality in an AC signal to be input from an AC power supply. The method includes, where an ideal AC signal is represented as Vsin &#x3c9;t (V: amplitude, co: angular frequency, t: time), calculating an arithmetic value including a value represented by sin&#x3c9;t+cos&#x3c9;t and determining that the AC signal is abnormal when the arithmetic value is out of a threshold range.

Growing community of inventors

Yamanashi, Japan

Tomoya Bessho