Alarm handling, A-B-C evaluation limits & noise metrics
Cyclic test sequence with graduated alarming.
Shows the SonicTC alarm system bundled into one workflow: an acceleration sensor is measured cyclically, then the noise metrics SNR and SINAD are calculated as characteristics and checked against graduated evaluation limits. Depending on the result the sequence raises either a warning or a critical alarm with dynamic message text. The error flow demonstrates automatic reactions to alarms: restarting the sensor on poor data quality and a PLC warning on high database load.
Workflows in detail
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Main
Cyclic test sequence with graduated alarming.
Start → endless loop (start trigger → acceleration sensor measurement → sensor quality analysis → if "low quality": warning alarm → if "bad quality": critical alarm → store) → end; error flow with a sensor restart loop and a database alarm including a PLC warning output.
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Sensor Quality Check
Characteristic block quantifying the signal quality.
Characteristic start → SNR → SINAD → characteristic end.
Inside the software
Take it with you
Import through the SonicTC DbManager — individually or merged into an existing database.
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