Request for help – short range obstacle detection alarm
John Wheeler of the Salisbury panel writes:
I have a blind wheelchair bound client with an inert leg protruding forwards on a metal support and the support has to be removed regularly. When moving himself about in his room/trying to get through a doorway etc his foot knocks into obstructions, so he needs a device that will warn him that an obstruction is near, & ideally roughly where. I’ve tried a car reversing kit with several sensors but it starts to sound a “beeper” when a metre away & can’t be made less sensitive. Finding a suitable sensor kit on the internet is proving difficult as suppliers are only interested in major industrial applications. Currently the best solution is stopping, waving a stick about & reacting accordingly. So has anyone solved a similar problem?- any kind of possible solution welcome!
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