Design and Research of Power Supply Interface for Two-wire Communication
Because the current wired communication needs at least four lines,that is,a pair of power supply and a pair of communication lines,when the number of sensors increases,the wiring problem has become an important factor limiting the monitoring index.An interface design method based on dual line communication and power supply is proposed.The experiment shows that the two-wire communication power supply interface designed can also complete the communication through the 485 differential bus on the basis of satisfying the power supply for each sensor,and the maximum number of supported sensors is theoretically more than 100.
wired sensortwo-wire communicationreal-time monitoringdifferential bus
NETL
NSTL
万方数据
