Tóm tắt:

The connection cable system doesn't allow additional or very limited in the number of paths while wireless methods do not meet requirements of the communication system. The solution was selected as the information signal will be superimposed on the power supply fine. The article describes a signal modulation technique combines with the Universal Asynchronous Receiver Transmitter (UART) to exchange information on the power lines at low voltage levels, which will be the basis for the control system to meet the requirements of an automation system in the industry.