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I would like to develop a device, prefferrably to be retrofit to existing strollers (baby prams), which is to act as a "dead-man-switch" or fail-safe mechanism.
The product would require a sensor to be mounted on the handle of the stroller (pressure sensitive) and a sensor to be mounted on the wheel which also acts as a braking mechanism on the wheel. If the handle has not been pressed for a predetermined period (say 2 seconds) AND the wheel is detected to move, the brake should be applied and an audible alarm sounded..
I will also need research done on the most suitable mounting methods to provide the greatest ability to retro-fit to existing designs.
Added 29 MAY 2010, 7:18 AM EDT
Based on the feedback I’ve had, and the common theme of the questioning, further clarification of my requirements is required..
My suggestion (or informal requirement) was to use a time delayed lock only when the stroller moves when not pressed (or pushed) ...
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