Digital pulse interval-modulated power line carrier communication method and its transceiving apparatus

Abstract

The invention relates to a carrier digital pulse interval modulation C-DPIM (carrier digital pulse interval modulation) power line data communication method and a transceiver device. Use linear sweep SSC spread spectrum carrier or 50KHZ-535KHZ narrowband carrier signal sequence to generate DPIM pulse, and use pulse interval to realize DPIM symbol encoding. The duration of the carrier signal is equal to or less than the time width of a basic time slot (slot) describing the time interval between two pulses in the DPIM system. Impulse preamble is introduced as a synchronization signal for transmitting data blocks to prevent error propagation. And using the single chip microcomputer to realize the carrier digital pulse interval modulation (C-DPIM) communication method, developed the power line carrier communication interface transceiver device, in the power line network environment where the correct communication cannot be realized by using INTELLON SSC P300 transceivers and methods, using C - The DPIM communication method realizes the ideal power line carrier communication.

Description

technical field [0001] The invention relates to a carrier digital pulse interval modulation C-DPIM (carrier digital pulse interval modulation) power line data communication method and a transceiver device. Background technique [0002] The low-voltage power network is developed into an information access network, and the new technology of using the power grid for high-speed and reliable data communication is low in cost and easy to implement, and it is a hot research topic at present. At present, the close combination and penetration of computers, communication technology, micro-control technology and consumer electronics products have made household electrical products gradually step into home automation, and the organic integration of information home appliances has formed a home network. In the home network, its transmission signals can be divided into two categories, one is low-speed signals, such as control commands and data volume less...

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Problems solved by technology

Due to the strong narrow-band interference and background noise of 50HZ and its multiple frequency signals on the power line, and the control of power grid harmonics in my country is not as strict as that of Europe and the United States, the technology and method of special communication chips for power lines are not suitable for the characteristics of domestic power grids. At present, there is no one at home and abroad. The low-voltage power line carrier communication chip technology and method that is really suitable for the characteristics of my country's power grid and at a reasonable price can achieve normal data communication within a distance of several hundred meters and during peak power consumption

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