Ultrasonic transducer driver circuit
Ultrasonic transducer driver circuit
(OP)
I'm building a picocontroller based pest control unit that employs the transmission of ultrasonic sound. Could anyone help with the best driver circuit to use for the ultrasonic transducer?





RE: Ultrasonic transducer driver circuit
TTFN
RE: Ultrasonic transducer driver circuit
http://hamjudo.com/sonar/
http://www.dis.unimelb.edu.au/staff/Jon/pubs/motion/Measuring%20Motion.html
etc. for more info
RE: Ultrasonic transducer driver circuit
RE: Ultrasonic transducer driver circuit
My device will employ a microcontroller that should cause the generation a range of frequencies that are expected to repel a number of pests. This would make the timing more accurate aswell as reduce the possibility of the pests becoming immune to one frequency.
I have been trying to get information on the sound produced by the male mosquito but it seems no-one knows. Does anyone have a clue?
RE: Ultrasonic transducer driver circuit
Since the output frequencies for mosquitos are different from a two tone pain generator that would deter other pests, your processor would have to create several "two tone" outputs, as well as play back the mosquito sound. Looks like you will be programming for quite a variety!
What I have done as an experiment, is to use two, tone generators, passed through a mixer. Set one frequency, then match the second to it. Then, slowly adjust the second frequency up or down. You will hear when the two tones create a most disturbing sound. This type of experiment will assist you in knowing better, the relationship between the two tones. Shifting such frequency groups up or down for different pests would then be quite easy, as the relationship between the two tones will always remain the same.
There is a difference between sounds that are anoying and ones that create pain. Discomfort can be filtered out, but two frequencies working together, cannot, as it creates a disruption on a cellular level.