I'm curious as to why the detectors have to be replaced every 10 years.
Regardless, modern sensors could give a thermal map of the entire
complex 24x7x365. Fire officials would have a better set of eyes when
they showed up as the sensor system & network could provide thermals as
a time series.
Also, another "killer app" for Boston is digital image correlation & the
cameras monitor stresses and strains on historic buildings valued at
about $10M each. And that's undervalued because they're really
irreplaceable. Similar for some in the Netherladns. Monitoring the
groundwater with samples every 4 mos is ok - better to monitor the
structure itself 24x7x365.
https://www.sciencedirect.com/topics/engineering/digital-image-correlation
https://www.bostongroundwater.org/
Bob
On 2023-03-17 13:37, Bruce Perens wrote:
On Fri, Mar 17, 2023 at 12:19 PM rjmcmahon via Starlink
<starl...@lists.bufferbloat.net> wrote:You’ll hardly ever have to
deal with the annoying
“chirping” that occurs when a battery-powered smoke detector
begins to
go dead, and your entire family will be alerted in the event that a
fire
does occur since hardwire smoke detectors can be interconnected.
Off-topic, but the sensors in these hardwired units expire after 10
years, and they start beeping. The batteries in modern battery-powered
units with wireless links expire after 10 years, along with the rest
of the unit, and they start beeping.
There are exceptions, the first-generation Nest was pretty bad.
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