Wind Calculator - 23

This optional observation will be the same as the selected Wind Sensor Observation speed (from the Sensor Setup) but averaged over the selected Averaging Period (from the Formula Reference)

This value represents the left-side term of the formula.

The observation's quality indicator represents the 1-sigma standard deviation.

This observation will be the final calculated wind speed value that can be monitored and used throughout all Qinsy components.

The observation's quality indicator represents the entire right side term of the formula.

(So this actually means that WIND_CALC observation = AVERAGE observation * WIND_CALC quality indicator)

SENSOR SETUP

Wind Sensor Observation:

What real wind observation is measured at the boom?

Select from the list one of the available generic observations as found in the template setup that represents your real wind speed measurement.

Height:

At what height is the boom wind sensor location?

• From Manual

• From Node Results

Expected height value has to be above Chart datum

Manual Height:

Enter the height value, in survey units and above Chart datum, of the wind sensor at the boom.

Node:

Select the node location of the wind sensor at the boom.

• List with all node locations on every object

For the selected node the height value above chart datum will be used.

Computation:

• [Priority List]

• List with all defined computations

FORMULA REFERENCE

Averaging Period:

The real measured wind speed value at the boom will be averaged over this period and this averaged wind speed value will be used as input parameter by the formula (left-term).

( You can monitor this averaged wind speed value by adding the optional generic observation as explained in paragraph Database Setup)

Average Height:

The reference average height which will be used as input parameter by the formula.

These two reference fields are read-only; the current formula is based on an averaging period of 10 minutes and an average height at 10m.

Change the following registry key from '00' into '01' to remove the read-only restriction:
HKEY_CURRENT_USER\Software\Qps\QINSy\8.0\Drivers\DrvQPSFreebaseUI\WINDCALC - Wind Calculator\Settings\AdvancedUser

OUTPUT SETUP

Height:

For what height do you want the get the final averaged wind speed value being calculated?

• From Manual
  Select this when the required height is known and won't change during your offshore operations

• From Node Results
  Selecting a height from a node results is useful when the required height will change during operations (e.g. when working with a crane).

Expected height value has to be above Chart datum

Manual Height:

Enter the required height value, in survey units and above Chart datum.

The formula will calculate the averaged wind speed for this fixed height.

Node:

Select the node location representing you required height.

• List with all node locations on every object

For the selected node the height value above chart datum will be used.

The formula will calculate the averaged wind speed for this variable height.

Computation:

• [Priority List]

• List with all defined computations

Averaging Period:

Select the averaging period for the final wind speed value.

• [None]

• x seconds

• x minutes

If you select [None] then no final wind wind speed value will be calculated nor published. Default period will be 10 minutes (600 sec). 

Update Rate:

Select the output rate of the final wind speed value (i.e. how often the final wind speed will be calculated and published to the rest of Qinsy).

• [None]

• Every 5 sec

• Every 2 sec

• 1 Hz

• 2 Hz

• 5Hz

Note that when selecting [None] the final wind will is calculated and displayed in the Results pane but the value won't be published as generic observation.

SENSOR RESULTS

Height [Node Name]:

The height value (above Chart Datum) and the time (UTC) for the most recent valid node result of the wind sensor location at the boom.

Value will turn red when there is no valid update for more than 5 seconds

Raw Wind [Sensor Name]:

The most recent raw measured wind speed value (and the time of the update) from the selected wind sensor observation.

Value will turn red when there is no new update for more than 5 seconds

Average Wind:

The averaged raw measured wind speed value, using the averaging period from the formula reference setup.
This value will be the same as published with the optional generic observation (which you may have defined under paragraph Database Setup).

The time in square brackets represents the elapsed period (hh:mm::ss notation) used for the average calculation, so at startup the period is counting up, until the averaging period has passed.

Behind this elapsed period you will find the number of observations used (count) and the standard deviation of the mean (average).

OUTPUT RESULTS

Height [Node Name]:

The height value (above Chart Datum) and the time (UTC) for the most recent valid node result of the desired height for which the final wind value will be calculated.

Value will turn red when there is no valid update for more than 5 seconds

Final Wind:

Calculated wind value according the proprietary final wind formula.

This value will be published as generic observation as defined under paragraph Database Setup

The little icon in front will rotate at every update rate.

You may lock the user-interface settings in order to prevent making setup changes by mistake.

When enabled, additional information about the setting is shown in a tool-tip when the mouse cursor is hovering above it. Disable it when you find this annoying.