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Carrier meter reading method, central coordinator and system

A carrier wave meter reading and instruction technology, applied in the electric power field, can solve the problems of low meter reading accuracy, achieve high stability, reasonable retransmission interval, and avoid network storms

Active Publication Date: 2021-01-19
HEXING ELECTRICAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The meter reading method that only uses the unicast method for re-reading has low meter reading accuracy, so further improvement is needed

Method used

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  • Carrier meter reading method, central coordinator and system
  • Carrier meter reading method, central coordinator and system
  • Carrier meter reading method, central coordinator and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1, a kind of carrier wave meter reading method, such as figure 1 shown, including the following steps:

[0060] S100. Periodically acquire the meter reading instruction to be sent;

[0061]S200. Obtain the number of current broadcast sending instructions, and judge the sending mode of the meter reading instruction to be sent according to the preset sending rule based on the current broadcast sending instruction number, wherein the sending mode includes unicast sending and broadcast sending;

[0062] S300. Send the meter reading instruction to be sent according to the determined sending mode, receive meter reading data corresponding to the meter reading instruction to be sent, and report the meter reading data.

[0063] Depend on figure 2 It can be seen that after obtaining the meter reading instruction to be sent each time, the sending mode of the meter reading instruction to be sent is judged, and the meter reading instruction to be sent is sent according...

Embodiment 2

[0112] Embodiment 2, on the basis of step B of embodiment 1, increase the step of overrun clearing, all the other are equal to embodiment 1, increase step B after overrun clearing specifically includes the following steps:

[0113] B210, periodically traverse all meter reading instructions in the downlink cache; obtain the sending mode and sending time of each meter reading instruction, calculate the time interval between the current time and the sending time; also obtain the sending times and the first time of each meter reading instruction The first sending time, calculating the time interval between the current time and the first sending time, and obtaining the sending time;

[0114] B220. When the number of times the meter reading instruction is sent is greater than the preset number of sending times threshold, it is determined that the number of times the meter reading instruction is sent exceeds the limit;

[0115] Those skilled in the relevant fields can set the thresho...

Embodiment 3

[0120] Embodiment 3, the meter reading instruction in embodiment 2 is limited, and all the other are equal to embodiment 2, and the meter reading instruction described in the present embodiment includes extension field identification bit, meter address and meter reading order, and concrete field is as shown in the following table Show:

[0121] Table 1

[0122]

[0123] in FIG. 1:

[0124] The extended protocol is a supplementary protocol added to address the shortcomings of overseas meter reading. APDU is a DLMS data field. In this embodiment, it is a meter reading command, which is a meter reading command initiated by overseas meter reading.

[0125] Header: extension field identification bit, fixed to 0xE6 in this embodiment;

[0126] NetworkID: reserved field, used for subsequent multi-network coexistence meter reading, currently fixed at 0;

[0127] Address length L: the number of table address bytes;

[0128] Physical device address: table address.

[0129] The D...

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Abstract

The invention discloses a carrier meter reading method. The method comprises the following steps: periodically obtaining a to-be-sent meter reading instruction; obtaining the number of current broadcast sending instructions, and judging a sending mode of a to-be-sent meter reading instruction according to a preset sending rule based on the number of the current broadcast sending instructions, thesending mode comprising unicast sending and broadcast sending; and sending the to-be-sent meter reading instruction according to the judged sending mode, receiving meter reading data corresponding tothe to-be-sent meter reading instruction, and reporting the meter reading data. According to the invention, the sending mode of the to-be-sent meter reading instruction can be switched from unicast sending to broadcast sending according to the preset sending rule, so that the meter reading accuracy is improved.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a carrier wave meter reading method, a central coordinator and a system. Background technique [0002] In the meter reading mode disclosed today, the retransmission mechanism of the meter reading command is often implemented by unicast transmission, especially in the overseas carrier meter reading mode, which adopts the link layer retransmission mechanism, because the retransmission mechanism is controlled by the link layer. Layer control, the retransmission frame is always sent in unicast mode. [0003] The meter reading method that only uses the unicast method for re-reading has a low meter reading accuracy, so further improvement is needed. Contents of the invention [0004] Aiming at the shortcomings in the prior art, the present invention provides a carrier wave meter reading method, a central coordinator and a system, which can send meter reading commands to be sent by broa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08C19/00
CPCG08C19/00
Inventor 阮惠祥王刚刘平周海波陈秋共刘光跃张建超王智黄招煌邹啸天李材辉张达
Owner HEXING ELECTRICAL
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