Inertia / Acceleration cut-off switch
Inertia / Acceleration cut-off switch
(OP)
Hi,
Does anyone know of a suitable cut-off switch that can be used to detect a serious impact and cut off a hydraulic system?
The ideal switch would be normally closed and latching open in the event of an impact. It would power a normally-open solenoid valve connected to the hydraulic accumulator. In the event of an impact the switch would latch open, de-powering the valve and releasing the hydraulic accumulator pressure. The valve requires 1.5A.
We would like to use something around the 10->15g range to avoid any false triggering. I think this is above the range of the standard fuel-pump cut-off switches.
Many thanks, Ian
Does anyone know of a suitable cut-off switch that can be used to detect a serious impact and cut off a hydraulic system?
The ideal switch would be normally closed and latching open in the event of an impact. It would power a normally-open solenoid valve connected to the hydraulic accumulator. In the event of an impact the switch would latch open, de-powering the valve and releasing the hydraulic accumulator pressure. The valve requires 1.5A.
We would like to use something around the 10->15g range to avoid any false triggering. I think this is above the range of the standard fuel-pump cut-off switches.
Many thanks, Ian





RE: Inertia / Acceleration cut-off switch
Dan - Owner

http://www.Hi-TecDesigns.com
RE: Inertia / Acceleration cut-off switch
It's not part of the airbag system; it cuts off the fuel pump in the even of a collision.
It may be adaptable to what you want.
On many recent Fords, it's hidden behind the side panel of the front passenger footwell, and accessible for reset by a finger through a cutout near the top of the panel. That's how you find one in a junkyard...
Mike Halloran
Pembroke Pines, FL, USA
RE: Inertia / Acceleration cut-off switch
Are the 'g' specs of that type of switch available anywhere?
I'm interested if it senses in any particular preferred direction, and at what level.
Thanks, Ian
RE: Inertia / Acceleration cut-off switch
Not sure if it could be adapted to hydraulic pressures, but if so would be more fail-safe / no electricity involved.
Probably cost lots more than MikeHalloran's suggestion though. Good one, Mike.
Good on ya,
Goober Dave
RE: Inertia / Acceleration cut-off switch
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RE: Inertia / Acceleration cut-off switch