Narrow band communication data transmission method for automatic and integrated meter reading

A data transmission method and narrow-band communication technology, which are applied in the field of narrow-band communication data transmission for automatic centralized meter reading, to suppress detection and system errors, improve measurement accuracy, and have a considerable success probability.

Active Publication Date: 2015-12-09
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

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  • Narrow band communication data transmission method for automatic and integrated meter reading
  • Narrow band communication data transmission method for automatic and integrated meter reading
  • Narrow band communication data transmission method for automatic and integrated meter reading

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Embodiment Construction

[0038] In order to describe the present invention in more detail, the technical solution of the present invention will be described in detail below with reference to 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 mentioned originally, resulting in the fact that the start and end points, power frequency cycles, and clocks on both sides of the transceiver are not synchronized with each other. Modification of low stability caused by independent timing synchronization of each transceiver section. Therefore, first make the following assumptions about the existing system to be transformed:

[0040] ①The meter and user data are as follows figure 1 The frame format shown is in the center of the power line and at both ends of the user in the form of TDD transmission and reception of power carrier.

[0041] ②Independent detection of...

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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 specifically 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 the automation of the power system, has low requirements for digital communication efficiency, and does not require particularly high implementation requirements. 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 grid in the cell (the communication channel originally exists) to transmit the meter information of each household to the central transceiver point somewhere in the cell; and then transmit it to the power management center through a specific network. There are mainly two parts of work ...

Claims

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Application Information

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Patent Type & Authority Applications(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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