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ultrasonic sensor angle

ultrasonic sensor angle

(OP)
i have ultrasonic sensor and PIR motion sensor
i want to know the shape of its waves is it cylindrical like this

or cylindrical with increasing height like this

or part of sphere like this

or what ?!!

RE: ultrasonic sensor angle

Ultrasonic would be more like the latter. PIR would depend on the bezel, which is often tailored to produce a specific coverage pattern. Note, however, PIR is a passive device, and does not send out "waves."

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Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
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