Method for solving low-voltage power line carrier communication island problem

• Main Authors: DAI CHENGTAO, LONG CHANGMING, WANG MENGYU
• Format: Patent
• Language: English
• Published: 30.09.2015
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PHYSICS; SIGNALLING; TRANSMISSION; TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS

The invention relates to a method for solving a low-voltage power line carrier communication island problem. A relay device monitors a carrier channel in real time, when the channel is idle, the relay device sends a broadcast command to electric meters near the relay device, addresses of the electric meters are recognized, and the electric meters around the relay device are classified; when the channel is busy, a concentrator reads the electric meters, the relay device monitors uplink and downlink messages of the concentrator, the uplink and downlink messages are analyzed, the relay device records communication conditions of the electric meters by the aid of communication counters of the electric meters, so that whether the electric meters are in a communication island or not is judged by the aid of the communication counters, and if the electric meters are in the communication island, the relay device is enabled. According to the method for solving the low-voltage power line carrier communication island problem, the carrier channel detection capacity is provided, communication collisions can be avoided, and the meter reading success rate is increased.