Electric energy meter clock checkout method

A clock correction and electric energy meter technology, which is applied to electronic timers, electric mechanical clocks, clocks driven by synchronous motors, etc., to achieve the effects of high timing efficiency, less application restrictions, and improved efficiency

Pending Publication Date: 2018-05-04
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a kind of electric energy meter that can be corrected at any time, the correction method is simple, the correction efficiency is high, the clock management problem of the electric energy meter is solved, and the manufacturing cost of the electric energy meter is reduced. Watch Clock Correction Method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric energy meter clock checkout method
  • Electric energy meter clock checkout method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] DL / T645-2007 Requirements for broadcast time synchronization in the communication protocol of multi-function electric energy meters

[0019] The existing broadcast school time is as follows:

[0020] 1.1 Broadcast timing

[0021] Function: Force the time synchronization between the slave station and the master station

[0022] Control code: C=08H

[0023] Data field length: L=06H

[0024] Data field: YYMMDDhhmmss (year.month.day.hour.minute.second)

[0025] frame format like figure 1 :

[0026] Note 1: Response is not required for broadcast timing.

[0027] Note 2: Execute the broadcast time calibration command only when the time difference between the date and clock of the slave station and the master station is within ±5 minutes, that is, adjust the date clock of the slave station to be consistent with the date clock issued by the command.

[0028] Note 3: It is not recommended to adjust the time at 0 o'clock in the middle of the night, so as not to affect some...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an electric energy meter clock checkout method. A district concentrator issues an encrypted broadcast clock checkout command message to an electric energy meter, a clock checkout command is decrypted after the electric energy meter receives the broadcast clock checkout command message, and the decrypted clock checkout command comprises a clock checkout command serial numberand clock checkout time. After the encrypted broadcast clock checkout mode is adopted, the clock checkout speed and the clock checkout success rate of the electric energy meter can be greatly increased, replay attack caused by illegal interception of the clock checkout message can be effectively prevented, a clock of the electric energy meter is prevented from being illegally adjusted, and safetyof the clock is ensured.

Description

technical field [0001] The invention relates to a clock correction method, in particular to a clock correction method of an electric energy meter. Background technique [0002] At present, there are mainly two methods for timing calibration of electric energy meters: [0003] 1. Explanation of the broadcast time calibration method: the clock is synchronized through the broadcast time calibration command of the energy meter, that is, the terminal sends a broadcast time calibration command to the energy meter to which it belongs. After the energy meter receives the broadcast time calibration command, if the deviation is within 5 minutes, then Update the clock of the electric energy meter. In order to ensure that the clock is not adjusted arbitrarily, only one adjustment is allowed per day. [0004] Defects of the broadcast time calibration method: In order to ensure the safety of the clock of the electric energy meter, the broadcast time can only be corrected for the electr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04G04G7/00
CPCG04G7/00G01R35/04
Inventor 黄中邵强岑旭李思韬王一佳刘晓湘陈颖心王玮伊玉云吴德义夏桃芳
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap