High-reliability power supply phase line communication sending and receiving methods and communication device

A technology of sending method and receiving method, which is applied in the direction of distribution line transmission system, electrical components, wired transmission system, etc., can solve the problems of high cost of encoding and decoding circuits, high false positive rate, and influence on communication accuracy, and achieve communication data The effect of small quantity, low communication frequency and low cost

Inactive Publication Date: 2019-04-09
HONGLI LIGHTING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Power carrier communication PLC (Power Line Communication) needs to add high-frequency carrier on the power line. The cost of the encoding and decoding circuit part is high, the false alarm rate is high, and it is greatly affected by the line condition. The power attenuation during long-distance transmission affects the correct rate of communication.

Method used

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  • High-reliability power supply phase line communication sending and receiving methods and communication device
  • High-reliability power supply phase line communication sending and receiving methods and communication device
  • High-reliability power supply phase line communication sending and receiving methods and communication device

Examples

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Effect test

Embodiment 1

[0025] In the highly reliable power supply phase line transmission method, the power supply information is loaded with a conduction angle signal, and different conduction angle signals correspond to different coded information. Correspondingly: the receiving method of the high-reliability power supply phase line is to transmit the transmitted signal to N signal receiving ends according to the corresponding relationship between different conduction angle signals and different coded signals, where N represents the corresponding signal of different coded signals. The address number of the signal receiving end, N is a natural number greater than or equal to 2, the first to Nth signal receiving ends respectively receive the power supply information loaded with the conduction angle signal, decode the power supply information through the sampling decoding circuit, and decode the corresponding Encode information, and then control the corresponding operation of the controlled object. P...

Embodiment 2

[0027] A high-reliability power supply phase-line communication device includes a signal sending end and first to Nth signal receiving ends. The signal sending end includes a first power supply circuit, an encoding control circuit 2 and a high-power thyristor Q1 or a thyristor. The first An output end of a power supply circuit is connected to the encoding control circuit 2, and the output end of the first power supply circuit is also connected to the AC fire wire. The AC fire wire is connected to the input end of the high-power thyristor Q1 or the thyristor, and the output end of the encoding control circuit 2 is connected to the control end of the high-power thyristor Q1 or the thyristor; the high-power thyristor Q1 or the thyristor The output ends are respectively connected to the input ends of the first to Nth signal receiving ends, and the first to Nth signal receiving ends respectively include a second power supply circuit, a decoding rectification circuit 3, a step-down c...

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Abstract

The invention relates to high-reliability power supply phase line communication sending and receiving methods and a communication device. According to the sending method, power supply information is loaded with a conduction angle signal, and different conduction angle signals correspond to different coding information. The receiving method includes the steps of receiving the power supply information loaded with a conduction angle signal, decoding the power supply information through a sampling and decoding circuit to obtain corresponding coding information and controlling the corresponding operation of a controlled object. Because of the adoption of the scheme, the cost is low, the construction and maintenance are easy, there is only need to analyze the waveform (namely, to judge the relative amplitude of each point of the waveform) for the decoding, and there is no need to analyze the absolute amplitude of the waveform. Therefore, signal transmission will not be affected even if powergrid voltage fluctuation or long-distance transmission causes power attenuation. The scheme is of high reliability, and is especially suitable for occasions with bad electromagnetic environment, extremely high reliability requirement, a small amount of communication data and low frequency of communication.

Description

technical field [0001] The invention relates to a power phase line communication method and device. Background technique [0002] At present, the commonly used communication methods include wireless communication and wired communication, each with its own advantages and disadvantages and good usage scenarios. [0003] Wireless communication, including NB-IOT / LORA / GPRS / ZigBee / 2.4G / WIFI, etc., has poor electromagnetic compatibility, low protection level, and exposed antennas when used in outdoor scenes such as street lights, resulting in a lower waterproof level of the finished product. Wired communication RS485 / DMX512 / RJ45 / TTL requires a separate arrangement of weak wires, which are easily damaged during construction and use, and are easily interfered by parallel strong wires. Power line communication PLC (Power Line Communication) needs to add high-frequency carrier on the power line. The cost of the encoding and decoding circuit part is high, the false alarm rate is high, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54
CPCH04B3/542
Inventor 刘剑滨吕文卿李莎张喆刘俊
Owner HONGLI LIGHTING GRP
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