Intelligent electric meter segmented freezing data storage method and device and intelligent electric meter segmented freezing data query method and device

Abstract

The invention discloses an intelligent electric meter segmented freezing data storage method and device and an intelligent electric meter segmented freezing data query method and device. The method comprises the following steps: S1, reading a segmented freezing associated object attribute table, and establishing a scheme record table corresponding to each segmented freezing scheme according to thefreezing period, the storage depth and the associated OAD attribute characteristics of each associated object attribute; S2, according to the scheme record table, reading and storing the content andreading time of first segmented freezing data corresponding to the scheme record table in the electric meter, and; and S3, sequentially reading and storing other segmented freezing data of the schemeaccording to a preset period. According to the invention, the technical problem that in an existing scheme, the reading time data of each piece of segmented freezing data needs to be stored, and the occupied storage space is large is solved, the data expenditure is reduced, and the quantity of segmented freezing data capable of being stored is increased.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a storage method, query method and device for sub-frozen data of smart meters. Background technique [0002] Fractional freezing is a type of object-oriented protocol freezing. It records relevant data according to the sub-freezing associated attribute table, and the storage depth, period, and associated OAD are configurable as a type of freezing. [0003] OAD (Object Attribute Descriptor) object attribute descriptor is used to describe the meaning, attributes and characteristics of a certain electric meter data type. [0004] RSD is used to select each record of record-type object attributes, that is, the row selection of the two-dimensional record table, which is selected by specifying the value of some object attributes that constitute the record. The range selection interval: front closed and back open, that is, [ start value, end value). [0005] Depending on the selected RSD...

AI Technical Summary

Problems solved by technology

[0007] In the existing sub-freezing storage schemes, each record has time stamp data, for example, according to the freezing period of the associated object attribute, the storage depth, and the freezing attribute of the associated OAD (Object Attribute Descriptor), it belongs to 8 kinds of freezing schemes. The freezing period and storage depth of the scheme are the same (that is, the number of times that supports freezing). By default, 12 associated object attributes are supported. The default freezing depth of each scheme is 28800. The single record data of a single scheme has a time stamp, and the time stamp is expressed in minutes. Form storage, each time stamp is 4 bytes, then the time stamp occupies a maximum space of 28800*4×8 / 1024=0.9M bytes, the space occupied by the time stamp is too large, therefore, it is necessary to invent a method to solve the above problems

Images