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A narrowband communication data transmission method for automatic centralized meter reading

A data transmission method and narrow-band communication technology, which is applied in the field of narrow-band communication data transmission for automatic centralized meter reading, to achieve the effects of suppressing detection and system errors, considerable success probability, and meeting engineering needs

Active Publication Date: 2018-11-09
蔡栋楠
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Note that the timing synchronization success probability of the transceiver segment is the same as the frame timing synchronization probability of a general digital communication system, which cannot be improved by error correction coding and other measures

Method used

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  • A narrowband communication data transmission method for automatic centralized meter reading
  • A narrowband communication data transmission method for automatic centralized meter reading
  • A narrowband communication data transmission method for automatic centralized meter reading

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Embodiment Construction

[0038] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] One of the main purposes of the present invention is to transmit and receive signals near the two zero-crossing points of each power frequency cycle, so that in reality the start and end points of each transceiver section, the power frequency cycle, and the clocks on both sides of the transceiver are not synchronized with each other. Improvement of low stability caused by independent timing synchronization of each transceiver segment. Therefore, first make the following assumptions about the existing system to be transformed:

[0040] ① Meter and user data in the form of figure 1 The frame form shown is transmitted and received mutually in the power carrier form TDD at the center of the power line and at both ends of the user.

[0041] ② Each pow...

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Abstract

The invention discloses a narrow band communication data transmission method for automatic and integrated meter reading. A receiving party and a transmitting party independently measure a half-cycle T based on the same and shared power frequency (50 / 60 Hz) source. The receiving party and the transmitting party perform measurement and calculation for a long time based on independent time clock frequency; the accuracy of the result can meet the requirements of synchronization of all initial points of receiving and transmitting segments during entire frame transmission time range. The invention may not perform virtual time clock synchronization, while performs synchronous receipt of frame signal of disperse receiving and transmitting segment, guarantee the receiver to sample during correct pulse existing time period, and largely promotes stability for receiving and transmitting data. The invention enables the synchronization success probability of frame synchronization word itself to be the probability of entire frame timing and synchronizing success, so that the properties is largely promoted; furthermore, frame synchronization word length can be prolonged to a synchronization word length of a multi-original system so that stability of the frame timing synchronization success is further promoted.

Description

technical field [0001] The invention belongs to the technical field of smart grid communication, and in particular relates to a narrowband communication data transmission method for automatic centralized meter reading. Background technique [0002] Automatic centralized meter reading is a system that benefits greatly from power system automation, has low requirements for digital communication efficiency, and is not particularly demanding for implementation. Therefore, in the initial stage of digital communication and power system intelligence, it is a natural choice to start with automatic centralized meter reading in the community. First, use the ubiquitous power frequency power grid in the community (communication channels already exist) to transmit the meter information of each household to the central transceiver point somewhere in the community; and then transmit it to the power management center through a specific network. There are two main tasks to realize such a sy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08C19/00
Inventor 郑清诒袁炼红顾渝骢王妃婵
Owner 蔡栋楠
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