Overview
The VisXpert module “Measurements” contains the following four program parts:
- A posting module that can store metrics in files or databases.
- An editor for parameterizing the posting module.
- A display module for displaying both archived and current measurements.
- The editor associated with this module.
The booking module as well as the display can be used completely separately from each other, but of course also together.
Performance overview
General:
- It is possible to control the modules via a VisXpert variable.
- The processing of the measured values is channel-related, i.e. each channel is a VisXpert variable of type Boolean, Integer, or Floating Point.
Recording module:
- For each measurement system, there is exactly one posting module to which exactly one directory is assigned.
- Recording of any VisXpert variable, where all values can be captured, but, depending on the archive type, only a reduced set of values. The optimization is done via a later described algorithm and is easily parameterizable.
- There are three types of archives:
- Ringbuffer: A self-overwriting, persistent data store.
- Follow-up archive: An archive file can be completed and a new one can be started via time, file size or variable triggers.
- SQL Archive: The metrics are posted to a database table.
- The recording of values can be started and stopped at run time. In the same way, the parameterization of the recording can be changed at run time.
- A safety value is always co-written at a parameterizable distance.
Display module:
- You can insert any number of display modules per project, but they all use the same information base.
- The surface of the display is freely customizable. Charts can be arranged as desired, resized and deleted.
- The view of the chart can be changed largely freely. An extended dialogue is available for this purpose.
- There is an X axis and any number of Y axes whose display area can either be defined firmly or automatically scaled with the displayed values.
- Archive and current data are not separated: Data is loaded from the database if necessary.
- Adding and removing channels in a chart is possible at run time.
- A data export to Excel and CSV is possible.
- Charts can be printed.
Definition
The following terms are often used in the programs and also in this help:
- Channel: In the measurement capture, the channel is a construct that encapsulates a VisXpert variable and provides various recording and display settings. Such a channel is unique within a project. This has the following effects, for example: When parameterizing a series (see below) that has a channel as a data source, changes to that channel (e.g. recording active) to all series that have this channel as a data source.
- Series: This is the term for the visual representation of channels as a line in a chart.
- Chart: In this context, a chart is a screen area that is used to represent series.
- Panel or cutout: These rectangular faces are formed by dividing the surface in a horizontal and vertical direction. Charts can be placed on them. They can be resized with the mouse.
- Post: Used as a synonym for storing readings in a data store.
