Re: Idea for Cheap Alarm System

["Rod Speed" <rod.speed.aaa@xxxxxxxxx>]

AZ Woody <reply@here> wrote:
> Robert L Bass wrote:
>>> I think those systems that are designed for the elderly should also
>>> have some mechanism to detect movement and alarm if there is no
>>> movement for a specified time between particular nominated times, so that if
>>> the individual does die or is unconscious, the system will alarm
>>> then too. Obviously the time between detected movements is different at
>>> night and day and in the bedroom and the rest of the house etc.
>>
>> The ELK-M1G home automation system can do all that.

> The last place my Dad lived (independent/assisted living) had a switch he had to hit each day.  It
> was a pull chain thing on the wall in the bedroom.

That isnt going to alarm as quickly, and suffers from
the problem that its easy to forget to pull the chain.

Even a warning that the chain hasnt been pulled isnt going to alarm as quickly.

> If "on the cheap" is the whole theme of this thread, I can imagine a
> simple timer circuit (a one shot with a duration of say 30-36 hours).
> It's "reset" by the person each day (like my dad and the pull chain),
> but if the timer goes off, the alarm is triggered.  There probably
> needs to be a simple disable, in the event that the person will be
> gone for a couple days.

And it needs a pre alarm warning that the alarm is about to go off too.