Diodes Info
UK question - Automatic Number Plate Recognition - Infra Red ?
The web has lots of info on ANPR but nothing really tells me how it works. As it has to work at night does the camera use an infra-red beam to illuminate the plate. Yes/No ? Even in daylight Yes/No ?
If it does would putting lots of high intensity Infra-red light emitting diodes across the plate defeat the camera. What wavelength LED should be used ?
I tried asking my local police, needless to say they were not helpful.
Ian M
Yes, it uses infrared at night. No, in daylight the sun provides plenty of that for free.
Although "defeating a camera" would be a technically illegal pastime, you would only be able to perform this illegal activity by night. The wavelength is a non-sequitur for various reasons, which will become apparent as you google it.
 |
 TEN 6 AMP SOLAR BLOCKING DIODES + INFO on 50 PANELS $8.95 Time Remaining: 29d 17h 22m Buy It Now for only: $8.95 |
 10 SOLAR BLOCKING DIODES + INFO on 75 100 WATT PANELS $8.95 Time Remaining: 29d 17h 45m Buy It Now for only: $8.95 |
 10 SOLAR BLOCKING DIODES + INFO 50 60 WATT RV PANELS $8.95 Time Remaining: 29d 17h 49m Buy It Now for only: $8.95 |
Write a comment: