The WLTP GTR15 Coastdown Test plugin for VBOX Test Suite gives you the ability to complete and analyse a coastdown test to the latest WLTP Coastdown protocol.
The WLTP GTR15 Coastdown Test has a unique Test Setup ribbon, from which you can configure the test.
Configure
Click on the Configure button to open the Settings window, where you can define the parameters of the test.
Report
Click on the Report button to create a report from the current test results.
Maths Channel
Click on the Maths Channels button to open the Maths Channels window to configure unique maths channels. You can find more information about maths channels in the Test Setup section.
Save Settings
Click on the Save Settings button to save the current test setup and add it to the Saved Settings area in the Add Test window.
The test will also be added to the list under the ADAS Test button on the Home tab for easy access.
Export
Click the Export button to display a dropdown menu with the export options. You can export the selected results or line results to a .csv or a .txt file.
Add Gate
Click the Add Gate button to add a virtual gate to the chart and map at the point of the cursor.
Gates are green lines on the map. The line of the currently selected gate will become blue.
You can now use the gates to define start and/or end conditions.
IMPORTANT
Opening a plugin (either as a new tab or overwriting an existing one) will clear all set gates.
To amend the test configuration and apply start and end conditions, you will have to redefine the gates.
Gate Name
When adding gates, the name of the currently selected gate will be displayed in the name box.
The gates will be named according to the type of gate (if applicable) and the order they were added.
Click on the arrow to see a dropdown list of all added gates.
NOTE
Each gate must have a unique name.
Width
When you have added a gate, you can specify the gate width.
The default gate width is 20 m.
Enter the new width in the Width (m) box.
NOTE
After changing the gate width, that width is automatically used as the default for subsequent gates.
Rename
Click on the Rename button to edit the name of the currently selected gate.
Delete
Click on the Delete button to delete the currently selected gate.
Delete All
Click on the Delete All button to delete all set gates for the session.
Export
Click on the Export button to export the created gate(s) as an .spl file.
This file can be reused at a later date and with other VBOX products.
Import
Click on the Import button to import a previously saved or provided .spl file. When the file is imported, the gates will be added in the order they were saved to the file.
Add
The Add button adds a column to the Test Results area.
Click this button to open a dropdown menu where you can select a channel to display in the test results window.
Channel
When you select a column header in the Test Results area, the channel name will be displayed in the Channel box (the top box in the Data Column section).
Some columns will have required channels that cannot be changed.
If the channel can be changed, the Channel box will become a drop-down list with the available channels.
Result Condition
When you select a column header in the Test Results area, and it is an optional channel, the Condition dropdown menu becomes available.
The conditions in the list will depend on the test and the selected channel.
Examples are:
- Avg
- Max
- Min
- Delta
- At Start
- At End
Sort Ascending
The Sort Ascending button will sort the values in the currently selected column in the Test Results area in alphabetical order from A to Z.
Sort Descending
The Sort Descending button will sort the values in the currently selected column in the Test Results area in alphabetical order from Z to A.
Select All
Click on the Select All button to select every run in the Test Results area with one click.
Deselect All
Click on the Deselect All button to deselect every run in the Test Results area with one click.
Edit Data
Click on the Edit Data button to open the Session Data window and add various vehicle and test information.
When in Offline mode, the Session Data will be saved into the VBOX file. This information will be recalled every time the file is loaded into VBOX Test Suite.
When in Online mode, a newly created session will be populated with session data from the previous session.
To save time, you can import and export the session data for other sessions. When you have completed the Session Data, you can export the data to a .vbses file by clicking on the Export button in the Session Data window. The exported file will contain all the session data and can be imported into another session via the Import button in the Session Data window.
| Vehicle | Wheels/Tyres | Test | Conditions | |
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Help
Click on Help to automatically open an Internet browser and load the relevant section of the User Guide on the Racelogic Support Centre.
NOTE
This page will only be displayed if there is a valid internet connection. If there is no valid internet connection, a cached version of the relevant section (from the last software update) will be presented in PDF form.
If you are creating a new test, the Settings window will open when you add the new test. This is where you can define the test parameters.
If you have already added a test and you have it open, you can click on the Configure button to open the Settings window to define or amend the test parameters.
Start Speed
This parameter denotes the speed at which the test will start.
Use the arrow buttons next to the value box to increase/decrease the value or type the required value directly into the value box.
End Speed
This parameter denotes the speed at which the test will end.
Use the arrow buttons next to the value box to increase/decrease the value or type the required value directly into the value box.
Split Runs
To perform a Split Run, where the coastdown test is split into different speed ranges, you can click on the + button to add another speed range.
Click on the X to remove any additional speed ranges.
Breakdown Interval
Specify the ∆v speed interval that each run will be broken down into (cannot be 0 km/h).
Use the arrow buttons next to the value box to increase/decrease the value or type the required value directly into the value box.
Requires Trigger
Select this option to stop the software from reading false coastdowns (i.e. braking into a turnaround point). When this option is ticked, the software will not record a coastdown result unless the trigger is active.
Releasing the trigger at any time during a coastdown will invalidate that run.
Trigger Channel
The trigger channel will be the channel input used for the trigger. Click on the dropdown arrow to open the list and select the required channel
Statistical Accuracy (%)
This setting defines the level at which a test will be regarded as ‘Good’. If the run does not meet the entered accuracy, the accuracy gauge on the dashboard will report NOT OK and the result will be orange in the Test Results table.
Use the arrow buttons next to the value box to increase/decrease the value or type the required value directly into the value box.
Minimum Sets
This setting defines the minimum number of complete sets (1 set = 1 run in both directions) that is required before the statistical accuracy will start calculating.
Use the arrow buttons next to the value box to increase/decrease the value or type the required value directly into the value box.
Run Pair Avg Method
This setting defines the averaging method used for the run pairs.
You can select either Harmonic or Arithmetic by clicking on the dropdown arrow.
Final Avg Method
This setting defines the averaging method used for the final result.
You can select either Harmonic or Arithmetic by clicking on the dropdown arrow.
Ignore runs that exceed (g)
This setting should be applied to stop the software from including incorrect coastdown runs (for example, braking into a corner) in the accuracy calculations.
Set the required maximum level of g that will determine if a run is included or not.
The software will ignore all runs that exceed the set level.
Use the arrow buttons next to the value box to increase/decrease the value, or type the required value directly into the value box.
Smooth Level
Specify the smoothing level that will be applied to the deceleration.
Use the arrow buttons next to the value box to increase/decrease the value, or type the required value directly into the value box.
Enter criteria that will quickly identify whether there has been a ‘Speed Jump’ during the coastdown run. When this setting is selected, a PASS/FAIL column for the speed quality will be added to the Results Table to indicate if the criteria have been met after each run.
Check
Tick the Check box to make the software check the speed quality.
Speed Threshold (km/h)
Specify the speed that will be used as the speed threshold for the run.
Use the arrow buttons next to the value box to increase/decrease the value, or type the required value directly into the value box.
In (s)
Specify the time (in seconds) that the speed should be achieved in.
Use the arrow buttons next to the value box to increase/decrease the value, or type the required value directly into the value box.
You can specify a channel that can be used to easily identify if certain parameters have exceeded a set threshold. Any runs that have exceeded the specified values will be highlighted in red to mark it as Failed.
The pass conditions can be set so that the run fails whenever the threshold is exceeded, either at the start of the test, at the end of the test, anytime during the test or averaged during the test.
Channel
Click on the dropdown arrow to see the list of available channels and select the one required for the condition.
Min Value
Specify the minimum value for the condition.
Use the arrow buttons next to the value box to increase/decrease the value or type the required value directly into the value box.
Max Value
Specify the maximum value for the condition.
Use the arrow buttons next to the value box to increase/decrease the value or type the required value directly into the value box.
At
Click on the dropdown arrow to select the required time for the condition.
- Anytime
- Average
- Start of Test
- End of Test
- Gate X
Add
Click on the + button to add another condition.
Delete
Click on the X button to remove a condition.
The Test Results area is the area that displays all of the results from the current test. In this area, you can include/exclude results from the Chart area, display the average/max/min values and also easily identify any runs that have not met the pass criteria.
Every time you start a new test (via the START button on the dashboard), or load a new file, a new tab will be added to the Test Results area. This gives you the ability to switch between separate tests or files and compare runs from each. You can remove a session from the Test Results area by clicking on the X icon on the session tab.
NOTE
Whenever you make any changes to the test configuration, maths channels, vehicle dimensions, test units or session data, Test Suite will perform a file scan to apply the changes to the loaded files and update the Test Results, Map and Chart areas.
If you want to cancel the results scan, click the red X in the top right-hand corner of the workspace. This will keep the updated settings, but will not update the Test Results, Map and Chart areas accordingly.
You can rename a session tab by double-clicking the tab header.
Changing the name on the session tab in the software will automatically change the name of the locally saved VBOX file (.vbo or .vbb).
By pressing the Edit Data button next to the name of the session in the Test Results area or on the Test Setup tab on the ribbon, you can add vehicle and test information to the session.
- When in Offline mode, this information will be saved into the VBOX file, meaning that this information will be recalled every time the file is loaded into VBOX Test Suite.
- When in Online mode, a newly created session will be populated with session data from the previous session.
This information will be included in the test report to make it easier to see under what conditions the test was conducted.
To save time, you can import and export the session information for use in other sessions (the entire range of data is exported, not just the visible screen).
Once the session information has been completed, you can export the data to a .vbses file. This file will contain all the session information that can then be imported into the open session information field.
The Test Results area has the following default columns for WLTP GTR15 Coastdown tests:
| Run | Indicates which run number the results relate to, with run one being the first run completed. There is also a selection box that, when ticked, includes the run in the graph and into the Average/Max/Min/Standard Deviation calculations. Once selected, a coloured square will appear to indicate which colour this run is displayed as on the graph. If you are loading a file in Offline mode, all valid runs will automatically be ticked. |
|---|---|
| Time | The total time the run has taken. |
| Distance | The total distance travelled in that run. |
| Start Time | The UTC time at the start of the run. |
| Max Deceleration | The maximum absolute value of longitudinal deceleration between the 'start of test' and the 'end of test'. If the Maximum Deceleration parameter is exceeded, this column will be highlighted with deep red, and the whole run will be highlighted with light red. |
| Time Breakdown | The time (in seconds) for the run to cover the speed Breakdown Intervals. |
| End Time (Ref.) | The UTC time at the end of the run. |
| Notes | Notes and comments added against the run. |
The software will automatically add columns based on the configuration.
Speed Quality
When the Speed Quality setting has been selected, the Speed Quality column will be added to the Results table.
It will provide a PASS/FAIL indication of whether the Speed Quality criteria were met or not.
If the run failed, the Speed Quality cell will become deep red, and the whole row (run) will become light red.
VBOX Test Suite will identify whether an overlapping portion of the test is OK or Not OK.
If the average force of the lower range deviates by either 10 N or 5% (whichever is greater) compared to the higher range, VBOX Test Suite will display the overlapping portion with a coloured tab in the Test Results table. This tab will either be green to indicate that the overlapping portion is OK or red to indicate that the overlapping portion is Not OK.
