How to ensure the accuracy of oee stop timing

Abstract

The invention relates to time measurement methods, particularly to a method for ensuring the accuracy of the stop timing of OEE (Overall Equipment Effectiveness). A stop signal of equipment is automatically identified through an MIOT terminal, an operator selects the stop reason and reports the production equipment state to a center database, and the summary statistics is performed through the center database. State data remain at the terminal if the data report fails due to the network interruption and the like, the state data are reported to the center database after a network is recovered, and the stop time is automatically calculated through the center database. According to the method for ensuring the accuracy of the stop timing of the OEE, the stop signal is automatically detected through the change of a level signal due to the MIOT terminal, the operator selects the stop reason and reports the stop reason and the stop time to the center database when the stop signal is generated, and accordingly the accuracy of a stop time statistics result is high and the statistics errors caused by the existing manual recording error and the inaccurate classification statistics are reduced.

Description

Technical field [0001] The invention relates to a time measurement method, in particular to a method to ensure the accuracy of OEE shutdown timing. Background technique [0002] In the production process of an enterprise, the overall equipment efficiency OEE, as an index to measure the production efficiency of an enterprise, has attracted more and more attention. OEE is composed of three performance indicators, namely time activation rate, performance activation rate, and qualification rate, which are expressed by the formula: [0003] OEE = time operating rate × performance operating rate × qualified product rate; [0004] Time start rate = actual production time H / planned running time D×100%; [0005] Performance start rate=production quantity×theoretical processing period / actual production time H×100%; [0006] Qualified product rate = qualified product quantity / production quantity×100%; [0007] Expand the OEE calculation formula to get: [0008] OEE=Equipment time activation rate×p...

AI Technical Summary

Problems solved by technology

[0010] In the existing statistical methods of downtime, manual recording of downtime data is generally used, and the errors caused by human factors in the statistical results are very large, which has a great impact on the accuracy of the statistical results

There are also some production equipment that can automatically collect real-time status information, but some downtime is not accurately classified and counted, resulting in inaccurate calculation of downtime, which is not conducive to enterprises to take targeted measures to improve equipment production efficiency

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