WATTECO BoB Assistant, Справочное руководство

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Bob Assistant - Reference Manual
2023-04-04 - Version 1.0 11
Please be advised:
o
if the vibration level was high enough at startup, but then is going below the minimum level of
detection in the first 7 days, the device might get stuck in a Learning session. In this case, we advise
to change BoB location on the machine to put it as close as possible to the vibration source, or on
a less vibration-insulated element.
o
If a new machine cycle appears after the first seven days (e.g. production rate increase), it might
be considered by BoB ASSISTANT as an anomaly. In this case, you will have to send a Downlink
command to BoB ASSISTANT in order to add this cycle to the dataset.
During the Learning session, the device will send messages to keep you posted on the learning
percentage (0 to 100%), for example:
Not to scale
Each message will send details on the progress percentage of the learning session (most of the time 5
messages from 0 to 100, with a 20% step), environmental information (temperature, vibration level, peak
frequency), and a screenshot of the FFT (see §
3.2.1 Payload structure )
2.1.3.1.2. Reporting
After the first Learning session, BoB ASSISTANT will switch to the reporting mode, where it will analyze
the machine vibration every 10 minutes:
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BoB ASSISTANT will process each sample to define whether a new learning session is needed, or to
prepare a report of the activity sent in periodic reports (every 3 hours, not configurable) concerning the
health of the machine during this period, regarding:
•
the operation time of the machine,
•
its vibration level,
•
the vibration drift percentage,
•
and prediction on potential failure distance in time, based on the vibration analysis of the last 24
hours, the last 30 days, and the last 6 months
See §
3.3.1 Payload structure for more details on report messages content.
Not to scale
Device activity during reporting
time
Report sampling period =
10 minutes
Device communication activity during Learning sessions
time
0 1 2 3 4 5
Device communication activity during reporting
time
Reporting period = 3 hours