Training | Resources

arrow_back_ios

Main Menu

arrow_back_ios

Main Menu

See All Acoustic End-of-Line Test Systems See All DAQ and instruments See All Electroacoustics See All Software See All Transducers See All Vibration Testing Equipment See All Academy See All Resource Center See All Applications See All Industries See All Insights See All Services See All Support See All Our Business See All Our History See All Our Sustainability Commitment See All Global Presence
arrow_back_ios

Main Menu

See All Actuators See All Combustion Engines See All Durability See All eDrive See All Transmission & Gearboxes See All Turbo Charger See All DAQ Systems See All High Precision and Calibration Systems See All Industrial electronics See All Power Analyser See All S&V Hand-held devices See All S&V Signal conditioner See All Accessories See All DAQ Software See All Drivers & API See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All Utility See All Vibration Control See All Acoustic See All Current / voltage See All Displacement See All Load Cells See All Pressure See All Strain Gauges See All Torque See All Vibration See All LDS Shaker Systems See All Power Amplifiers See All Vibration Controllers See All Accessories for Vibration Testing Equipment See All Training Courses See All Whitepapers See All Acoustics See All Asset & Process Monitoring See All Custom Sensors See All Data Acquisition & Analysis See All Durability & Fatigue See All Electric Power Testing See All NVH See All Reliability See All Smart Sensors See All Vibration See All Weighing See All Automotive & Ground Transportation See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Release Notes See All Compliance See All Our People
arrow_back_ios

Main Menu

See All CANHEAD See All GenHS See All LAN-XI See All MGCplus See All Optical Interrogators See All QuantumX See All SomatXR See All Fusion-LN See All Accessories See All Hand-held Software See All Accessories See All BK Connect / Pulse See All API See All Microphone Sets See All Microphone Cartridges See All Acoustic Calibrators See All Special Microphones See All Microphone Pre-amplifiers See All Sound Sources See All Accessories for acoustic transducers See All Experimental testing See All Transducer Manufacturing (OEM) See All Accessories See All Non-rotating (calibration) See All Rotating See All CCLD (IEPE) accelerometers See All Charge Accelerometers See All Impulse hammers / impedance heads See All Cables See All Accessories See All Electroacoustics See All Noise Source Identification See All Environmental Noise See All Sound Power and Sound Pressure See All Noise Certification See All Industrial Process Control See All Structural Health Monitoring See All Electrical Devices Testing See All Electrical Systems Testing See All Grid Testing See All High-Voltage Testing See All Vibration Testing with Electrodynamic Shakers See All Structural Dynamics See All Machine Analysis and Diagnostics See All Process Weighing See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All On-Site Calibration See All Resources See All Software License Management

How to calculate the average of multiple runs in BK Connect?

One of the most common calculations done in traditional data processing is the average of multiple runs, for both steady-state and non-stationary measurements. The challenge with Run Averaging is defining which runs to average together. This is where our new Record and Process task comes in, providing an easy overview all recordings and results based on run number and measurement number in one table.

BK Connect - multiple runs - image1
A run is an individual measurement and is incremented automatically, whereas a measurement includes all the runs that have the same Test Condition and Device Under Test. The Test Condition and Device Under Test are user-defined metadata fields that can be found in the project tree. To take full advantage of this new workflow concept, you need to use these metadata attributes.

There are three paths to how you can start your tests for a day:  

  1. Predefined test plan with specific Device(s) under test to be tested in known Test conditions
  2. Ad-hoc workflow where you are not sure what you will test or how it will be tested
  3. A combination of the above, either because you know where you will start, but you may learn along the way and need to modify the test plan.  

The new Record and Process task can handle all these scenarios.   

We can begin by defining the Device(s) under test and the Test conditions. These can be created in the project browser or imported from a file.    

In the Record subtask, you can select the test condition that will be performed next. If you are unsure of the test condition or an unplanned test is decided to be performed, you can deactivate the Test Conditions. In this case, the measurement number is automatically incremented for each new recording.   

BK Connect - multiple runs - image2
Once you have selected the Device under test and Test conditions, you can make recordings. BK Connect automatically generates the name of the recording based on the user-defined attributes. This functionality can be enabled through the task menu. In this example, we have used the Setup name, Device under test name, and active test condition to define the name of the recording. As these values are updated, the name of the recording is automatically updated, saving time when it is critical and reducing the likelihood of mistakes. The same option is available for defining and automatically updating the directory path for the recording.  

When in the recording mode, you can select any recording and signal to view the time history for validation. If multiple recordings or channels are selected, then the displays are populated based on internal rules. When making measurements, the table is as compact as possible, so any common metadata for all runs is placed at the top of the table. As soon as the metadata value is no longer unique, it will move and become an additional column to the left of the table.   

BK Connect - multiple runs - image3

Record Sub Task

As errors do occur during the measurement, for example if the user forgot to update the Test condition or Device under test before starting a run, correcting the documentation is critical for these common occurrences. BK Connect allows you to move a run to a different measurement to update the metadata for this specific run.

BK Connect - multiple runs - image4

In addition, you can also update the Test condition or Device under test for all runs in each measurement, giving you a high degree of flexibility in adjusting your test as they go. These changes are modified in the data in the project and the files on the disk. Any changes that need to be made to reorganize the measurements and runs must be made before the processing has been started. If processing has been completed and editing needs to occur, you must manually delete the processed data from the project browser.

BK Connect - multiple runs - image5

BK Connect - multiple runs - image6
Once you are satisfied with the recording(s), you can navigate to the Process sub task and start the analysis. By default, the processing will begin in the active setup, but this task allows you to define which setup the recordings should come from and which processing setup to use. The average is automatically calculated for each measurement and is stored to the project browser with the naming convention name Avg (runs included in the average), for example, FFT Setup, Baseline, Low Engine Speed, High-1 Avg(1,2), and the action category is Re and Process – RunAvg. Hence, it is easy to find on the Team Server. If the averaged results are not necessary, this calculation can be disabled through the task menu.

BK Connect - multiple runs - image7

Process Sub Task

With the thumbs-up icon, you can decide which runs should be included in the average. The average is automatically recalculated when a change is made and replaces the currently stored results in the project browser. To select a different setup (process chain configuration), use the processing selector at the top of the test plan table.  

Any row or rows in the Test Plan table can be selected to populate the display. The signal selector grid next to the table can be organized to group data based on signal name, Physical Quantity, Component ID, Node Id, or Direction. Once a signal is selected, it is overlaid based on physical quantity and function type in the display. Intelligent legends reduce the complexity of more complex features for high usability. 

BK Connect - multiple runs - image8
BK Connect - multiple runs - image9

Another aspect of the rules that can be challenging is defining the axis limits. In the fast displays you can manually enter the value on the max and min values on the y-axis. This information is persisted for all displays with the same physical quantity and function type, until the y-axis is reset to auto scale mode, by double clicking on the axis. 

This functionality works in the same way for the displays created in the Monitor.  

BK Connect - multiple runs - image10
After you have completed all the recording and processing for a given test, you can send the data to the Team Server directly from the Record and Process task. The recording, processed and averaged results all have a unique action category making it easier to search and view the data in the Team Server.

Advanced Query for all data from the Record and Process task

'Action category’ IN [‘Rec and Process – Recording’,’Rec and Process – Processed’, ‘Rec and Process – RunAvg’]

To continue the journey with the data, once it has been stored to the Team Server, (local or network), and the appropriate query executed, BK Connect enables multi select in the team search. This way you can view the data before you decide what to import and start making decisions.

In addition, self-contained BKC files are created when recordings and results are exported, including information such as Test, Setup, Test conditions and process chains. When imported into a new project, the entire project browser can be recreated, allowing for proper traceability for where and how the recordings were made or the data processed. The imported data can come from the Team Server or from an external file. This information is not included in the original recording so the data must be exported to a file or Team Server. With the process chain included in the exported results, you now have complete traceability as to how the results were processed. 

BK Connect - multiple runs - image11

Multi Select in the Team Server

Traceability is very important. In other processing tasks it is possible to process data, change the process chain and then process the time data again. So, within a single setup you could have results from multiple process chains and no way to deconstruct how the data was reproduced. Once data has been processed in a setup, you cannot reprocess the time data. To reprocess data in the active setup, you first need to delete the results in the processed data folder or create a new setup. This is by design to improve the traceability of the results.

The new Record and Process task improves traceability for both the recordings and results. This workflow gives an overview not only to those acquiring the data, but also to test managers and test requestors. It is easy for all to see what has been completed and what is left to do before your day of testing is complete. Once the workday is done and the data is shared with the Team Server, it is now available for others in your organization to continue the product development process.  

 

Learn more about data processing in BK Connect:

> BK Connect Type 8403: Data Processing Software

 

Modern Slavery Statement     Imprint    Cookie Policy    Privacy Policy    Sitemap    Ethical Business

 

 

© 2024 Hottinger Brüel & Kjær

 

 

close
nCode logo
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
ReliaSoft-Logo-webp
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
Prenscia HBM-Logo rgb
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
HBM-Logo blue rgb
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.

close
logo of Brüel & Kjær (BKSV), experts of sound and vibration measurements from HBK
Graphics Brand

We have moved ${referer} to www.hbkworld.com

 

This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.