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automatic door systems

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alec82

alec82

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dear friends
anybody know anythings about sensors using in automatic door
best regards
 

These used to be doppler radar, driving by with your speed radar warning receiver would be trigged by these!

Other units uses a simple IR ray, and when broken will open door. These are in use on buses.

/WD
 

    alec82

    alec82

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even simple limit switches are also used in automatic doors, reed relay along with magnet can also be used
tell us exactly what is your requirement
 

    alec82

    alec82

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I am currently working with software for the door controller and our client use infrared sensors that are not susceptible to sunlight.
 

    alec82

    alec82

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thats the problem with photo receivers they get saturated, you should use TSOP 1738 receiver so the transmitter signal has to be modulated at 36Hhz
 

Sensor manufacturers are optex and BEA.
 

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