| 摘要 |
FIELD: electricity.SUBSTANCE: in the method to couple devices of information transceiving along a combined double-wire communication and DC supply line based on realisation of information transceiving by the method of analogue modulation, a low-frequency carrier is modulated in a device transmitter by an information digital signal, the produced radio signal is summed with supply voltage and sent along a combined communication and DC supply line, an information radio signal is identified in a receiver from total voltage on the line, the initial digital information signal is recovered in the device receiver, with the help of the device controller, the signal is decoded from the receiver, and the responsive information signal is generated for the transmitter. At the same time, an uncoupler between a transceiver of each device and a line is a rejection filter, providing for matching of impedances of device receiver and transmitter and wave resistance of the combined communication and DC supply line and made on the basis of the oscillating circuit with partial inclusion into the combined communication and DC supply line, where the received radio signal is identified from the total voltage of the line during reception, a permanent component of device supply voltage is identified, and the transmission radio signals are summed up with the voltage on the line.EFFECT: reduced level of electromagnetic noise developed by devices, lower sensitivity to external noise, increased speed of transmitted information, makes it possible to increase the number of devices simultaneously connected to a line, increased length of a line permitted for operation, simplified circuit realisation of an information transceiving device and considerable reduction of economic inputs for its production.7 cl, 6 dwg |
