User's Manual

Motor Condition Monitoring System Manual: Wireless Hardware
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measurement at the time set on the host computer WEB GUI (up to 10
times/day). In the measurement, the 16384 sets of acceleration is continuously
acquired with a sampling interval of 50μs (2kHz) to transmit the data to rMICA-
master. It takes about 5s to send all data. Depending on the signal condition, it
may take longer to resend the data. If the transmission of all data is not
completed within 30s, the transmission operation will be skipped and the data
file for that timing will not be created.
By setting the trigger acceleration on the WEB GUI, you can also wait until the
measurement target starts moving. If the acceleration value does not reach the
trigger acceleration before timeout, the measurement and data transmission is
skipped and the data file is not created. In addition, by setting an offset delay
time, the measurement is started after a certain period of time after trigger
acceleration is detected. The acceleration value is a relative acceleration with
the average of the measured data as the 0 point. Therefore, it is not necessary
to consider the effect of the gravitational acceleration due to the installation of
the acceleration sensor.
iv. USB wireless base station: rMICA-master
rMICA-master has a built-in 920MHz wireless module and connects to a host
computer such as MICA-R via USB2.0. Power (5V) is supplied from the host
computer and connect a dedicated antenna to the antenna terminal of the RMA
connector.
A rMICA-master can accommodate at least 60 rMICA-vibration. More rMICA-
vibration can be connected by setting different measurement time to each
rMICA-vibration. rMCIA master can only communicate with rMICA-vibration at 1
time, so you should be aware of the restrictions on communication time. It takes
5-10s to transmit data for 1 rMICA-vibration. If more than three rMICA-vibration
send at the same timing, some of rMICA-vibration may fail to transmit the data.
USB cable connector