Abstract：Abstract: This paper explains the purpose and significance of water meters online calibration and period checking, andthen provides several suggestions such as introducing standardized and universal metering interfaces during production stage of water metersand reserving suitable straight pipe sections in the installation and design stage,in order to guaranteethe quantity ofon-line calibration and period checking.At the same time, the evaluation method of water meters usage status based on remote online monitoring and big data analysis technology is discussed.It is recommended that the water meters management mode can be changed from "regular replacement" to "status Replacement”, proposed to strengthen the research on the blockchain technology to ensure the process control, management supervision and data security of the metrology data.
2021, Vol. 31 