ANALYSIS OF MSG PRODUCTION TEST DATA AND MSG LOCAL-E DATA
One of the most important services provided by Tadpole related to monitoring timber properties is a real-time analysis capability. Real-time means that as data are accumulated in a database the results are available immediately in a visual format to anyone with access to the database.
Analysis types for in-mill tests currently incorporated in the system include the most popular analysis techniques and some special analyses developed to satisfy international requirements for product monitoring. Included are:
Tadpole also has the capability of monitoring the average dynamic local-E and the percentile dynamic local-E measurements of the grading machine in real time. This analysis provides continuous monitoring of the two properties and provides valuable information for compliance purposes because an out-of-control situation for E may be avoided before it occurs. Use of this monitoring technique, however, depends upon the accuracy of the estimation of the factor (if any) associating the dynamic local-E and E properties.
Tadpole provides a convenient 'results palette' display giving a visual interpretation of the condition of all the real time product monitoring analyses. In the display, different colours indicate (1) in-control, (2) warning and (3) out-of-control conditions. This gives an immediate indication of conformance of material properties to target requirements. The most important analyses for compliance purposes are also displayed on the main window where the colour again indicates the state of the analysis.
The analysis components of the system were developed so that they could also be used as an aid to mill research and development work related to the extensive data that becomes available. This, and the ability to use the analyses directly in user developed reports (discussed later) leads to a highly efficient system for analysing timber properties, storing results in electronic form and assisting with both internal and external audits.
The options provided for setting up the individual analyses are necessarily extensive to cover all likely users. Therefore to assist in providing a single set of desired options across a set of mills a single action can be used to set all the options and then rolled out across all mills.
The analysis components are all based on chart components. Most of these components are also incorporated within the Report component. Charts were chosen because they are easy to intepret by both expert and non-expert personnel. Some examples of typical charts are shown below.
MSR dynamic Local-E analysis chart with average and 5% E active:
Cusum Min E chart:
Cusum R chart:
Continuous percentile R chart:
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