Human Detection

for human detection ,i am going to use ultrasonic doppler sensor ( a pair of ultrasonic emitter &receiver for ex. MA40A3S ).so i want to ask that to process the outputs from the receiver ,will i need a dsp or i can do the processing with mcu?Please help.

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michaelkellett over 12 years ago +1

You can make motion detectors using ultrasonic transducers and dopler effect and they used to be popular in intruder alarms some 30 years ago before the mass uptake of passive IR which is generally cheaper…
vsluiter over 12 years ago in reply to redanb +1

Hello Anurag, You coul try to use some kind of fixed obstruction in front of the pir sensor, to limit its range of vision. This way you can block the complete zone under, for example, 110cm. This is used…
DAB over 12 years ago in reply to redanb +1

Hi Anurag, I am at a loss. I do not see how an ultrasonic sensor can reliably detect between human and animals any better than a PIR sensor. The advantage of the PIR is that it can be set up to normalize…

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DAB over 12 years ago

You should be able to use the MCU, but keep in mind that your arrangement will only work when someone gets close (10-20cm) from your device.

A PIR sensor would get you better range of detection and still work with the MCU.

Just a thought,
DAB
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DAB over 12 years ago

You should be able to use the MCU, but keep in mind that your arrangement will only work when someone gets close (10-20cm) from your device.

A PIR sensor would get you better range of detection and still work with the MCU.

Just a thought,
DAB
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