- Posted by morganj2
- On April 19, 2019
In October of 2018, a massive earthquake hit Anchorage Alaska, causing severe damage and knocking out power to much of the city. A prototype Sensor MoJo One was operating in a Brewery before, during and after the Earthquake. Sadly, Travel Mode was not yet implemented in this test unit, and so no vibration data was stored. But, the sensor was useful in a different way – to tell when the power came back on.
Since Sensor MoJo connects to WiFi to report its data, and the power and WiFi were knocked out, the data from the sensor stopped when the power went out. The Brewery is located in a relatively low point, and with the risk of a Tsunami, everyone left the Brewery. So, the owner of the sensor, the head brewer was able to look at the data from the sensor to tell when the power came back. Here is a plot of the temperature from that day:
The plot shows the last data reported at 8:21, slightly before the earthquake it. This sensor was set to report every 15 minutes, so when the quake hit 6 minutes after this last report, the power went out. And, the graph shows that it remained out until slightly before 10:11 that evening – that is the time of the first report back.
So, from the comfort and safety of his home, the head brewer could keep tabs on when the power came back up at the Brewery.