Hello guys,
I am a newbie here,
I just want to design an ultrasonic sensor/transducer for a burglar system project.
I just like to design and build the sensor by myself so please do not tell me go and buy a piezo ultrasonic sensor. the center resonance freq would be about 40kHz.
I am thinking on a magnetic transducer. anybody have done a similar task .Any idea for doing so?
the problems of using a tweeter:
1: they are not too directional, And let the waves to propagate from their sides I think .
2: they are not centered at 40kHz.
P.s1. I saw a peizo inside an tweeter too, while it had within a big wounding, So what was the reason of using the piezo insided?
Thanks for any help.
I am a newbie here,
I just want to design an ultrasonic sensor/transducer for a burglar system project.
I just like to design and build the sensor by myself so please do not tell me go and buy a piezo ultrasonic sensor. the center resonance freq would be about 40kHz.
I am thinking on a magnetic transducer. anybody have done a similar task .Any idea for doing so?
the problems of using a tweeter:
1: they are not too directional, And let the waves to propagate from their sides I think .
2: they are not centered at 40kHz.
P.s1. I saw a peizo inside an tweeter too, while it had within a big wounding, So what was the reason of using the piezo insided?
Thanks for any help.
Last edited: