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Hi!
First of all, thanks for your replies.
kak111,
The box is not solid, neither hermetic as well. Not sure how to handle pressure inside it.
luben111,
I´ve already tried to substitute my tailored wire structure. My first though was build it like a membrane keyboard with silver based...
Hi!
You can think the box as a safe, let´s say 600x600x600mm and this part is to detect intrusion. If a hole is made on it I'll fire an alarm. Today I have this bunch of wires tailored over a piece of tissue and glued over the box. Like a huge mechanical fuse.
Hope this helps.
Thanks.
Ric
Hi,
I need to provide a solution to detect a perforation (e.g. drill hole) in a box (metal) when it takes place. Currently I have a external structure with wires that covers the whole surface. Works similar to a fuse but it´s hard to install it.
Has anyone done something for this purpose...
Hello,
Not sure if it is the right forum....anyway
I need to check if a block of money bills inside a cabinet is covered by any other material like a sheet or plastic film or if there´s nothing on top of it only the bills. The main idea it to detect someone placed a cover shield over the bill...
Re: Detect touch
Kender,
Thanks for pointing me to some AN...that will be very helpful for sure. As far the second part I just can´t see how to make it happen. Even with the mechanical trigger there was a problem...the solution at that time was to create a sort of obstacle so that just one...
Detect touch
I need to substitute a mechanical trigger used inside a suit case handler (metal handler). The trigger (coil and switch) is used to detect someone is carrying the suit case. The idea is to remove the mechanical items and have something based on touch only. I was thinking about...
Bill of materials, cost, suppliers list...whatever....excel is a very powerful tool i think...i had some tables for eletronics calc all in excel with all the math hidden behind very cool related pics.
Ric
Hi,
I have some information for another squib (not the one I'm using right now) but it may be helpful to understand:
Resistence (ohm +/-15%): 1.05
Max current (no ignition): 0.3A
Min. current (ignition): 0.6A
Energy (mJ/ohm): 3.2
For the squib I'm using now the only info. I have is: 4mJ/Ohm...
mj ohmm
Hi,
I have to define the current needed to trigger a squib (you can imagine this as a fuse). The parameters I have are its impedance (1.5 ohm) and the energy necessary to fire it (4 mJ/Ohm).
Is there any way to calculate the current needed (let's say I will connect it to a 1.5V...
Hi,
I need to work on a small system like this:
Part 1) Emitter: This one I call "frequency emitter" (not sure the correct name). It's supposed to continuously send a 1.632Khz signal (no modulation needed) through an antenna.
Part 2) Receiver: Its job is just detect the presence or absence of...
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