Timeline for Cyclometer interference from car detection loops?
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 5, 2012 at 16:15 | answer | added | Cascabel | timeline score: 0 | |
| Apr 5, 2012 at 10:32 | answer | added | j_dog1997 | timeline score: 1 | |
| Jan 19, 2012 at 16:14 | comment | added | Cascabel | @StephenTouset: Sure. I just figured a piece of aluminum foil in the right place was a lot cheaper. | |
| Jan 19, 2012 at 14:37 | comment | added | Stephen Touset | Solution is to buy a digitally coded cyclometer. Sigma, for example, makes cheap-ish ones that are quite good. | |
| Jan 19, 2012 at 14:32 | comment | added | Brian Knoblauch | I'm surprised it's that sensitive. I've not noted that behaviour from any of my cyclometer. Nor from the rally computers on my cars (which is basically the same type sensor as a cyclometer). In my case, they're all fully wired (I'm not a fan of wireless unless it's absolutely required for an application). | |
| Jan 19, 2012 at 9:06 | answer | added | Bernard Tyers | timeline score: 2 | |
| Jan 19, 2012 at 5:24 | history | tweeted | twitter.com/#!/StackBicycles/status/159868938191241216 | ||
| Jan 19, 2012 at 4:08 | answer | added | Daniel R Hicks | timeline score: 0 | |
| Jan 19, 2012 at 3:08 | answer | added | Chef Flambe | timeline score: -1 | |
| Jan 18, 2012 at 18:39 | comment | added | Cascabel | @freiheit: Well, that current is induced by putting a signal into the loop (Wikipedia says 10-200kHz). I'm not sure how the signal from the magnet passing is detected, but it seems like the distinguishing component would be at a much lower frequency (even though it'd have higher-frequency components), so I'm not sure if it could interfere there. It's also possible it could be directly affecting the computer; I don't know what the sensor-to-computer signal looks like. | |
| Jan 18, 2012 at 18:10 | comment | added | freiheit | Interesting question. The detection loops are a induction loop that creates and detects current flow in conductive (metal) materials. Cyclometers are typically a coil that picks up a magnet going by (which causes an electric pulse). Certainly seems possible that an induction coil could cause a current flow in the cyclometer pickup, but I just don't know. Hopefully somebody does. | |
| Jan 18, 2012 at 17:30 | history | asked | Cascabel | CC BY-SA 3.0 |