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Relay method for banded topology low-voltage power line carrier communication

A low-voltage power line and carrier communication technology, applied in distribution line transmission systems and other directions, can solve problems such as control systems that are not suitable for real-time requirements, and delay accumulation.

Active Publication Date: 2013-06-19
江苏西欧电子有限公司
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AI Technical Summary

Problems solved by technology

For systems that require multi-level relays, the use of this relay communication method will cause the delay to gradually accumulate, which is not suitable for control systems that require high real-time performance

Method used

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  • Relay method for banded topology low-voltage power line carrier communication
  • Relay method for banded topology low-voltage power line carrier communication
  • Relay method for banded topology low-voltage power line carrier communication

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Embodiment Construction

[0018] In the street lamp control system based on power line carrier technology, when the communication distance is long or a certain section of communication is not smooth, a certain street lamp controller with normal communication is used as a relay controller to complete the communication. The street lamp controller as a relay evenly covers the entire street lamp line to ensure that the entire line has no communication blind spots in the case of the worst communication quality. The increase in the number of relay controllers will cause the communication channel to be occupied all the time and increase the communication delay. The relay method effectively solves the above problems. Compared with the prior art, the present invention can configure any street lamp controller installed on site as a relay controller, which not only facilitates construction but also saves the cost of installing a separate repeater. The most important thing is that the relay Method During system in...

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Abstract

The invention discloses a relay method for banded topology low-voltage power line carrier communication. A pair of main relay streetlight controllers and a pair of sub-relay streetlight controllers are pre-configured in each section of distance, wherein carrier signals can reliably transmit in each section of distance. After receiving instructions, the main relay streetlight controllers and the sub-relay streetlight controllers execute a discard strategy and judge either discard or relaying, data buffer pools are established in each main relay and each sub-relay establish to buffer and protect valid data. The main relays and sub-relays are combined to enable a whole streetlight system to have dynamic and relaying effects, and not only the characteristics of static relaying and easy operation, but also the flexibility of dynamic relaying are achieved. Each streetlight controller and each relay controller use a carrier interception and avoidance algorithm to share a power line channel, a communication link is not needed to be established before each communication, real-time performance of the system is improved, and the relay method for banded topology low-voltage power line carrier communication are suitable for power line streetlight control system areas.

Description

technical field [0001] The invention relates to the field of low-voltage power line carrier communication, and is suitable for a street lamp control system based on low-voltage power line carrier communication technology. Background technique [0002] In the street lamp control system based on low-voltage power line carrier communication, the concentrator must be able to communicate deterministically with each street lamp controller on the entire line, and the control system itself has high requirements for communication reliability and real-time performance. At present, the power line carrier is used in the control system to face the following problems: the communication rate of the carrier is relatively low, the probability of conflicts on the entire communication line is high, the distance between each street lamp controller and the concentrator becomes longer, and multi-level relay is required , my country's low-voltage power line interference is complex, resulting in com...

Claims

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Application Information

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IPC IPC(8): H04B3/54
Inventor 向敏王平王立民王慧鑫王时贺冉景海赵星宇
Owner 江苏西欧电子有限公司
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