Method and device for determining calibration interval of electronic measuring equipment

Abstract

The invention discloses a method and a device for determining a calibration interval of electronic measurement equipment, wherein the method and the device are used for settling a technical problem ofinsufficient measuring or excessive measuring which is easily caused in calibrating the electronic measurement equipment by means of a fixed calibration interval in prior art because of a relativelyhigh difference between a production process of the electronic measurement and a using environment and an operation condition. The method comprises the steps of acquiring historical calibration data of to-be-calibrated electronic measurement equipment, and establishing a historical standard time interval sequence and a historical standard result sequence according to the historical calibration data; solving a likelihood function model according to the historical standard time interval sequence and the historical calibration result sequence, and obtaining the parameter of a reliability model inthe likelihood function model which is established based on electronic measurement equipment calibration qualification probability distribution; determining the target value of the reliability model,calculating the time value of the reliability model according to the target value and the parameter, and using the time value as the calibration interval of the electronic measurement equipment.

Description

technical field [0001] The invention relates to the technical field of calibration of electronic measuring equipment, in particular to a method and device for determining a calibration interval of electronic measuring equipment. Background technique [0002] In general, electronic measurement equipment is affected by various external environmental factors and aging of internal components during the use process, and the accuracy will gradually decrease with the prolongation of equipment use time. After a period of time, various performance indicators based on accuracy will be reduced to the point that they cannot meet the expected use requirements. In order to ensure that the accuracy and other indicators of electronic measuring equipment meet the normal use requirements, it is usually calibrated at fixed time intervals, and the time interval between two adjacent calibrations is called the calibration interval. [0003] However, due to the huge difference in the production p...

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Problems solved by technology

[0004] The invention provides a method and device for determining the calibration interval of electronic measuring equipment, which solves the problem of using a fixed calibration interval for electronic measuring equipment in the prior art due to the large differences in the production process, use environment and operating conditions of the electronic measuring equipment. Calibration is likely to cause technical problems of under-metering or over-metering

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