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P.I.R. Operated Outside Lights.

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In the windy weather people complain about P.I.R. operated automatic outside lights constantly operating at night. What is the best way to “de-sensitise” them to prevent nuisance operation if they have no sensitivity control?

Z.

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    ebee: 
     

    Ys Passive infra red is actually the “wrong” technology for outside because it`s looking for changes in temperature in it`s field of view over a certain timeframe. you give the duration, the amount and the speed maxima and minima to try to cater for certain factors and it`s all a bit of a compromise. you end up with a unit that works reasonably well a lot of the time, but sometimes the extremes kick in and throw it about. If the result is a false trip or two every now and again it is quite tolerable. Connecting it to an intruder alarm system though would be an absolute nightmare. That`s why we connect them indoors to alarm systems where the limits are more controllable and outside is a bit of a fudge really

    Perhaps a break beam outdoor detector system would be better to detect intruders.

    Z.

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  • 0

    ebee: 
     

    Ys Passive infra red is actually the “wrong” technology for outside because it`s looking for changes in temperature in it`s field of view over a certain timeframe. you give the duration, the amount and the speed maxima and minima to try to cater for certain factors and it`s all a bit of a compromise. you end up with a unit that works reasonably well a lot of the time, but sometimes the extremes kick in and throw it about. If the result is a false trip or two every now and again it is quite tolerable. Connecting it to an intruder alarm system though would be an absolute nightmare. That`s why we connect them indoors to alarm systems where the limits are more controllable and outside is a bit of a fudge really

    Perhaps a break beam outdoor detector system would be better to detect intruders.

    Z.

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