BFSK, BPSK and DBPSK mode modulation-based low-voltage power line carrier communication circuit

Abstract

The invention discloses a BFSK, BPSK and DBPSK mode modulation-based low-voltage power line carrier communication circuit. The circuit comprises a carrier control circuit, a zero crossing detection circuit and a signal coupling circuit; the carrier control circuit is composed of an SSC1643 chip and a peripheral circuit; a signal amplifying filtering circuit and a receiving filtering circuit are connected between the carrier control circuit and the signal coupling circuit; the signal amplifying filtering circuit is connected with a current limiting circuit; the zero crossing detection circuit is connected between the carrier control circuit and a power line; and the communication circuit further comprises a power supply part for providing power for the communication circuit. According to the BFSK, BPSK and DBPSK mode modulation-based low-voltage power line carrier communication circuit of the invention, support of BFSK and DBPSK is additionally realized, communication can be arbitrarily adjusted in a range of 10 to 500kHz, and therefore, the application of the communication circuit can be more flexible; a low-power consumption LDO is adopted in the power supply part, and therefore, electric energy can be saved largely.

Description

technical field [0001] The invention relates to a power carrier communication circuit, in particular to a low-voltage power line carrier communication circuit modulated based on BFSK, BPSK and DBPSK modes. Background technique [0002] With the gradual establishment of the national smart grid, the low-voltage power line carrier communication technology has been deeply applied in the field of electric energy and various energy metering. As a transmission channel, the power line itself has incomparable advantages as a means of communication, and the application range and prospects of power line carrier communication in the fields of household appliance automation control will be very wide. Therefore, power line carrier communication has huge economic benefits and significant social benefits. However, there are many factors that are not conducive to the development of low-voltage power line carrier communication technology in China's power grid, such as: serious harmonic inter...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the purpose of the present invention is to provide a low-voltage power line carrier communication circuit based on BFSK, BPSK, and DBPSK mode modulation, which solves the problem that the existing low-voltage power line carrier chip cannot perform BPSK and DBPSK modulation, and increases the carrier communication. Frequency Range

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