POWER LINE COMMUNICATION DEVICE WITH NOISE DETECTING AND FILTERING FUNCTIONS

摘要

The present invention is to provide a PLC device having noise detecting and filtering functions, which includes a power receiving port having one end connected to a power supply unit for receiving a power signal and a network signal; a noise filtering circuit having one end connected to the other end of the power receiving port for filtering noise of the power signal passing therethrough; a power output port connected between the other end of the noise filtering circuit and a load; a noise detecting circuit having two ends connected to a line between the first filtering unit and power receiving port and a line between the first filtering unit and power output port, respectively; and a processing unit connected to a line between the first filtering unit and power receiving port for receiving the network signal from the noise detecting circuit and transmitting the same to a network apparatus.

主权项

1. A power line communication (PLC) device with noise detecting and filtering functions, comprising:
a power receiving port having an end connected to a power supply unit in order to receive a power signal and a network signal from the power supply unit; a noise filtering circuit having an end connected to an opposite end of the power receiving port, the noise filtering circuit being provided with a first filtering unit; a power output port having an end connected to an opposite end of the noise filtering circuit and an opposite end connected to a load; a noise detecting circuit having an end connected to a line between the first filtering unit and the power receiving port, the noise detecting circuit having an opposite end connected to a line between the first filtering unit and the power output port, the noise detecting circuit being provided with a relay and a second filtering unit, wherein the second filtering unit is a low-pass filter configured for blocking passage of the power signal but allowing passage of a noise generated in the power signal by the load, and the first filtering unit is a high-pass filter configured for blocking passage of the noise and the network signal but allowing passage of the power signal; and a processing unit connected to the line between the first filtering unit and the power receiving port, the processing unit being provided therein with a bridge module and a detection module, the bridge module of the processing unit being configured for receiving the network signal and transmitting the network signal to a network apparatus, the detection module of the processing unit being configured for detecting a level of the noise when the relay is in a closed state.