eddyCurrent

ET Typeobject 4.3.0

The eddyCurrent object serves as a general purpose eddy current acquisition process.

Property	Type	Unit	Description
probeId required	integer	-	The id of the probe used
sensorGroupId required	integer	-	The sensor group associated to this process, defined in the corresponding probe object
driveAmplitude required	number	V	Peak output voltage setting of the acquisition unit
frequency required	number	Hz	Test frequency associated to this group
gain	number	dB	Hardware gain applied to all channels
channels required	array	-	A channels array

Drive Amplitude

The drive amplitude may differ from the voltage at the coil level since output impedance, load resistors, and multiplexer amplification are not accounted for here.

channels

ET Typearray 4.3.0

Property	Type	Description
id required	integer	Unique id of the channel within the eddyCurrent process
sensorId required	integer	The sensor associated to this channel, refers to a sensor defined in the sensorGroup
inputId	integer	The analog eddy current signal input associated to this channel acquisition
timeslot	integer	The discrete moment in the multiplexing sequence when a specific sensor is energized and its response is measured

Example

 "eddyCurrent": {
    "probeId": 0,
    "driveAmplitude": 1.0,
    "gain": 1.0,
    "channels": [
        {
        "id": 0,
        "sensorId": 0,
        "timeslot": 0,
        "inputId": 0
        }
    ],
    "sensorGroupId": 0,
    "frequency": 2000.0
}