Mid-Process Data Analysis in Long-Running Tests
note number - vlab0002

Using Automated Export in VisuaLCN Software

Many battery tests run for very long periods, some requiring uninterrupted execution over a period of months or even years. Bitrode's VisuaLCN software will gather information from these tests, and also offers users the ability to export and examine data already collected, even as the programs are running, without endangering the data currently being gathered.

As a battery test is run, VisuaLCN acquires the returned information into a database. The automatic export function scans the test database file directory, then determines which, if any, files have been modified within the last 24 hours, and copies such new data into user-determined files in a separate database. This process allows data analysis from batteries as they are under test, without risking the integrity of information still being generated.

Exported data can be handled in one of two ways. One option allows a user to append data gathered over the last 24 hours to the .csv data file previously written, thus saving cumulatively all of the test's data. The other option overwrites the previous day's information and only saves work from the last 24 hour period. This is set up in the dialog screen checkbox as shown below.

The timing of the 24-hour data export can be determined by the user using one of two methods. The first is to initiate the export from the VisuaLCN data export dialog screen. The time at which this operation is performed becomes, by default, the time at which VisuaLCN will export the data every 24 hours. The second method uses the NT Scheduler, an operating system tool with a command line interface. Using this, information can be copied between databases at a time other than that at which the export function was initiated. A Bitrode representative can assist with setting up these options.

This database feature is aimed at offering battery laboratory staff the flexibility required to execute long-running tests, and gives users the ability not only to monitor, but to analyze data from tests while they are still in progress.