Po-Yun Shih, Chung-Wen Hung, Chau-Chung Song
Pages 70-74
Abstract
An FSK (Frequency-Shift Keying) based industrial analog signal transmission is proposed inthis paper. Due to the advantage of digital transmission, such as noise immunity and error check, the digital transmission is more and more popular. The FSK is a simple kind of basic digital transmission. Although the analog signal modulation is already well-known and mature, but it is easily interfered by the noise, especially in an industrial environment. When the carried frequency is occupied, the alternative frequency is necessary. However, it is a tough work for sure. The FSK based wireless transmissionis used to perform a wireless transmission of analog signal in the industry. It also has good effects of removing the wiring from device to device, and breaks the restriction of the device movement. Experimental results show that the proposed method can work well, and the wireless transmission bandwidth achieves 16kHz.
Keywords: FSK, Wireless, Industrial communication, Active filter