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Bunned. James Bunned.
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The battery for the central locking on my car is running low at the moment, and I have no idea how to change it!
This led me to think, why not install a Rechargeable power supply in the key, and a circuit in the ignition that powers it up.
Result... Never standing in the rain, waiting for the
bloody thing to work!
BMWs seem to do this
http://www.google.c...+ignition+bmw&meta=
[hippo, Nov 17 2004]
[link]
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Yeah, sorry... that should read remote central locking! |
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some cars do this already |
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If there was ever a piezoelectric application, this one is it |
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[theircompetitor] I happen to think my piezoelectric chair idea is THE seminal work on the subject, but whatever. |
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I like the idea of a rechargeable supply, though. Why not have it charge through the car's alternator system when you're driving? |
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[hippo]: Tell us which cars do this already. Draw pictures. |
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So the remote locking mechanism would get charged through the key that is inside the ignition? |
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Most of the places where watch batteries are replaced also do remote devices, [MikeOliver]. |
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I think they should be piezo, too. It's a natural application, using thumb pressure to generate the power. |
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Some cars don't have them anymore. |
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"When the battery goes dead, don't stand outside in the rain, just put the shiny key in the little slot thingy by the door knob and turn it"
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Unfortunately I can't quite reach my car door from inside my house! |
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[angel] Don't know anything about pictures, but it looks like BMWs do this (see link). It was some other kind of car I was thinking of though - possibly Land Rovers, but I can't find any reference to them recharging key batteries. |
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That's good enough for me. Certainly baked then. |
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That first anno of mine was responding to a question that has since been deleted!
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Also I have a BMW (well a BMW Mini) and i'm pretty sure it doesn't do this! |
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UnaBubba was right, some cars don't have key holes on the doors anymore. |
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