A Lighting Controller Based on Power Line Communication

Abstract

The invention discloses a power line communication-based lighting controller, which comprises a control main machine and a plurality of control sub-machines, wherein the control main machine and the plurality of control sub-machines respectively comprise unique address codes; the control main machine comprises a main machine lighting encoding and decoding board, a key panel, and an LCD display screen; the key panel and the LCD display screen are connected with the main machine lighting encoding and decoding board respectively; each control sub-machine comprises a sub-machine lighting encoding and decoding board and a lamp which is connected with the sub-machine lighting encoding and decoding board; the sub-machine lighting encoding and decoding boards and the main machine lighting encoding and decoding board are in communication circuit through power lines; a switch of each lamp is controlled by decoding a control signal of the main machine lighting encoding and decoding board; and a state signal of each lamp is modulated to be fed back to the main machine lighting encoding and decoding board through each power line. According to a lighting control system disclosed by the invention, the control signal can be transmitted by an ordinary line when electric energy is transmitted; and a traditional wired transmission signal line and the wiring cost can be saved when the power line communication-based lighting controller is applied to the lighting control system.

Description

technical field [0001] The invention relates to power electronics technology, in particular to a lighting controller based on power line communication. Background technique [0002] There are three main ways to control lighting / lamps in existing home lighting and commercial lighting systems. One is point-to-point control between lamps and switches, that is, one switch controls the switch of one lamp, and of course multiple switches control one lamp. , which is the most common control method in our daily life; the second is that the main switch composed of multiple switches controls the lamps distributed in different places respectively, the lamps are equipped with controllers, and the signal must be set Obviously, this wired control method must pay a lot of wire costs and labor costs caused by laying lines; the third is to use wireless control methods, although it can overcome the wire and labor costs to a certain extent. , but the cost of transmitters and receivers for wir...

AI Technical Summary

Problems solved by technology

[0002] There are three main ways to control lighting / lamps in existing home lighting and commercial lighting systems. One is point-to-point control between lamps and switches, that is, one switch controls the switch of one lamp, and of course multiple switches control one lamp. , which is the most common control method in our daily life; the second is the main switch composed of multiple switches to control the lamps distributed in different places, the lamps are equipped with controllers, and the signal must be set Obviously, this wired control method must pay a lot of wire cost and labor cost caused by laying lines; the third is to use wireless control method, although it can overcome the cost of wire and labor to a certain extent. , but the cost of the transmitter and receiver for wireless control is also very high, and ordinary consumers cannot afford it, and the wireless control signal is also limited by the distance, so long-distance control cannot be realized

[0003] If ordinary power lines can be used to transmit control signals while transmitting electric energy, then the above problems can be effectively solved. However, 220VAC power lines are laid for the transmission of 50HZ power frequency power, because they are not laid for communication, so it is difficult To meet the communication requirements, the performance is as follows: 1: The impedance characteristics and attenuation of the power network restrict the signal transmission distance; the noise interference of the 220V power line restricts the quality of signal transmission

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