Measuring points

What is a measuring point?

In Sedrix, a measuring point is used to display and analyze measured data.

All measuring points are made up of the following:

Input channels
These result from the raw data assigned to the data sources
Function blocks
These are used to perform calculations with input channels
Output channels
These are the calculation results from the function blocks
Evaluation views
These are various definable views or summaries to display data online, in reports or in export formats.

A measuring point is used to logically group individual measured variables. The measurement data is linked to devices and data sources via assignments.

The logical criteria used to assign measurement data to measuring points depends on the respective application and is completely up to you.

Examples of possible groupings:

Type of grouping	Description	Examples
Measurement location	All measured data from one location is pooled in one measuring point. This is particularly useful if measuring points are to displayed on a plan or map.	Vibration measurements: Interval data and events are assigned to a measuring point, so that one measuring point corresponds to one vibration measurement device placed in the field.
Measuring object	All measured data from one measuring object are pooled in one measuring point.	Geodetic measurements: All measured data of the track section or overhead line mast being inspected. Measurements with an inclinometer probe: All measured data from a borehole belongs to one measuring point
Measurement system	All measured data of a measurement system, e.g. a water level gauge, is pooled in one measuring point.	All data from a chain inclinometer is assigned to a measuring point. A corresponding function block is used to evaluate it.
Sensor type	The measured data is pooled in one measuring point according to sensor type.	A group of position sensors in a multi-point extensometer.

The data in a measuring point can come from several different data sources, depending on the criteria used to assign the data.

BEST PRACTICE

As a rule, it does not make sense to create a measuring point for each measuring channel of a data source.
Measuring channels that are to be offset against each other using a function block must always be assigned to the same measuring points.

What types of measuring point are available?

Different types of measuring points are available depending on the type of data to be analyzed. The filters, function modules and evaluations offered differ depending on the type of measuring point.

Measuring point type	Data type	Description	Examples of data sources
Time-value measurements	One-dimensional time-value series	This measuring point type is intended for all types of time-value rows from any sensor or data source.	MCC measurement station Data logger CSV data IT monitoring
Geodetic measurements	Three-dimensional time-value series	This measuring point type is particularly intended for geodetic measurements which deal with three-dimensional points in space. Specific function blocks for evaluating such data are available.	MCC TSC with Leica Tachymeter
Vibration measurements	Multi-dimensional time-value series Event-based time-value series	This measuring point type is particularly intended for vibration measurements. Both vibration events and interval data can be evaluated. There are two variations depending on the sensor type of the measuring device.	Menhir MR3000
Inclinometer measurements	Location-value series	Intended for measurement rows that were created with an inclinometer probe. Warning: measurements with inclinometer chains are not meant. These can be evaluated using the “Time-value measurements” measuring point type.	Inclinometer probes
Complex crossover evaluations	One-dimensional time-value series	Data from different measuring point types can be assigned to this type. The data is converted into one-dimensional time-value series, allowing data of different types to be offset against each other and evaluated. Assignments are therefore not created to data sources, but to other measuring points.	Other measuring point types
Measured data in document form	Documents that cannot be evaluated	This type is a special case, as the measurement data is not evaluated here and there is no assignment to a data source. It is intended for results documents that are available as PDFs that can be assigned to a validity period. This means that external data can also be stored and managed in SEDRIX even if the raw data is not available.	PDF documents

The types of measuring points offered depend on the license.
If you are interested in a specific type, please contact your sales partner or support@sedrix.com!

How can I create a measuring point?

Measuring points are created within folders, which means they are bound to the folder in question. As such, if the folder that should contain the measuring point does not yet exist, first create this folder.

Click on Add on the right to create a new measuring point.

BEST PRACTICE

If many similar measuring points need to be created, first configure one measuring point completely, including evaluations, and then use this as a template for other measuring points.
You can then create further measuring points by duplicating measuring points and you only need to change the assignments if necessary.

How can I group measuring points?

Measuring points can be grouped using folders. By using folders, any logical hierarchy of folders and measuring points within a project can be created.

Folders, like measuring points, can also be displayed on a plan or a map.

In addition, folders can be used to control access for specific user groups.

How can I duplicate measuring points?

Every measuring point type can be duplicated. When this is done, no data is duplicated, but rather all of the measuring point properties are simply copied and transferred to a new measuring point.

Any triggered alerts within a measuring point are not copied.

This means that instead of creating and configuring a new measuring point from scratch, you can simply make a new measuring point by duplicating an existing measuring point that is already suitably configured and then adapt the duplicate as required. This is a great time saver, especially if you have to set up several similar measuring points.

Depending on the type of measuring point, there are various duplication options that can be used to control what is duplicated.

What is a crossover evaluation?

Crossover evaluations are used to calculate and present data from different measuring point types. They can be understood as a kind of virtual measuring point, in which you can assign channels from other measuring points. The data from these measuring points then flow into calculations and can be displayed in evaluations.

The only difference to the other measuring point types is that the measuring point channels are not newly created by assigning device channels, but by integrating channels that already exist in other measuring points.

What is a reference measurement?

Applies to: TIME-VALUE MEASUREMENTSGEODETIC MEASUREMENTS

One or more points in time can be set as reference measurements for each measuring point. When a reference measurement is created, the measured value for this point in time is determined and recorded for all channels of a measuring point. If no measured value is found within a specified tolerance interval, the reference value can also be entered manually.

Once a reference measurement has been defined, the delta function block can be used to determine the differences between the respective channels and the reference measurement.