Optics11 DELTASENS, Руководство пользователя

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15
User Manual
1.2.3. Define sensors
The last step required to start measuring and acquiring data with the DeltaSens system is the
definition of the sensors connected to the unit. To properly demodulate their signals, it is necessary
to define each sensor and set its
cavity size on the “Sensor s Select” menu of the “Home” panel. If
the interrogator is delivered together with a set of sensors, their settings will be already stored into
the unit. If this is not the case, the following instructions shows how to define manually a set of sensors
and decide what sensors signals the unit should decode. Open th
e “Sensors select” menu of the
“Home” panel as shown in Figure 8.
•
Click “Add” on the bottom left corner of the menu to open the ”Sensor Add” window as
shown in Figure 8 b). This popup window allows to define a new sensor connected to the unit.
•
Fill the following fields:
o
Name – custom name of the sensor.
o
Signal – should be set to Relative as default.
o
Gain – scaling value used to convert the sensor cavity length into the measured
physical quantity. This value can be found in the datasheet accompanying the sensor
and it is assessed during the sensor calibration.
o
Offset – should be set to 0 as default.
o
Phase IPM – defines range and resolution of the sensor. It should be kept at 0 by
default, more detailed description is provided in section 1.6.
o
Type – informative description of the sensor.
o
Unit – unit of measurement to display in the graphs of the demodulated signal (e.g.
“g” for accelerometers)
•
To save the changes and add the new sensor to the list click “OK”. The new sensor will be
now displayed in the list with a default cavity size of 0.
•
To decode the signal of the new sensor its cavity size must be set. Double click on the sensor
name to exte
nd the “Sensor select” window as shown in Figure 8 c).
•
Each peak of the graph displayed in the extended window corresponds to a sensor connected
to the unit. Refer to the cavity size value provided in the sensor datasheet to locate the peak
corresponding to your sensors.
•
To select the sensor cavity size, use the cursor to move the yellow line indicator over this peak
as shown in Figure 8 c). C
lick “Confirm” at the bottom right of the window to save the changes.
•
The thick-boxes on the left of each sensor name, allow the user to select of what sensors the
unit should acquire the signal. To add the new sensor to the acquired ones, thick the
corresponding box.