Time service method and device of power grid terminal

A power grid and terminal technology, which is applied in the field of power grid terminal timing, can solve the problems of low timing accuracy and achieve the effects of high timing accuracy, wide geographical range, and cost savings

Inactive Publication Date: 2017-05-31
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +2
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  • Abstract
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method and device for power grid terminal timing, so as to overcome the defect of low timing accuracy of existing power grid terminals

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  • Time service method and device of power grid terminal

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Embodiment Construction

[0033] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Unless expressly stated otherwise, throughout the specification and claims, the term "co...

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Abstract

The invention discloses a time service method and device for a power grid terminal. The method comprises the following steps: acquiring a broadcast timing signal, wherein the broadcast timing signal comprises a time code; decoding the time code to determine time information corresponding to the time code; and updating the current time of the power grid terminal according to the time information. The method disclosed by the invention is wide in applicable geographic range and free from network connection, namely, the time correction can be executed when the power grid terminal is not communicated with a main station of a power information acquisition system; and meanwhile, the time service precision of the method is high, the 24-hour automatic correction can be realized, and an accumulated error in RTC circuit time correction is inexistent.

Description

technical field [0001] The invention relates to the technical field of power grid terminal timing, in particular to a method and device for power grid terminal timing. Background technique [0002] At present, the time accuracy of the electric meter mainly depends on RTC (Real-Time Clock, real-time clock) timing and master station timing. RTC uses the crystal oscillator frequency as the clock reference, and the accuracy has a certain deviation with temperature changes, which will cause a large accumulation after long-term operation. The error increases, and the time deviation can be corrected by sending the time service from the master station. [0003] The RTC in the smart meter is mainly responsible for providing a high-precision clock and basic calendar functions. Currently, the RTC clock is used in time-sharing billing and the timing function of the remote centralized reading system. The accuracy required for 1HZ is about 10ppm. If the error If it is greater than this v...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04R20/02
CPCG04R20/02
Inventor 徐平江赵东艳王于波王东山杜新刚张海峰庞振江唐晓柯原义栋何旭杰
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY
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