Hello everyone.
I would like to ask for your guidance in the following matter:
I need to develop a circuit that generates a LIPUS signal (Low-intensity pulsed ultrasound - Wikipedia) (1.5 MHz frequency pulses, with a pulse width of 200 ?s, repeated at 1 kHz, at an intensity of 30 mW/cm2).
I have an ultrasound transducer that will be driven at 21V peak to peak with the described signal properties.
Can Arduino be used to generate such signal? If yes, what would be the approach when designing this circuit?
Also very important, could the eventual implementation allow for variable (controllable) frequency and pulse width?
I know of the Smith & Nephew EXOGEN 4000+ Ultrasound Bone Healing System with the same specs you indicate.
It works on Amplitude Modulated Ultrasound of 1.5 MHz with pulse width of 200 ?s, a repetition rate of 1 KHz and an intensity ratio (TM/TA) = 5.3
I think the profit marging on these devices is huge and a DIY kit would be very welcome.
I was told it costs to > $ 700.00 to Medicare and you can find one used on eBay for < $150.00
BTW: where can you get the transducer and how much does it costs?
The application seems to be protected by Patent, but if it's for personal use (non commercial) it may be OK (Disclaimer: I'm no lawyer).
I will follow this thread to see if anyone has any idea on how to build one based on Arduino
A 16MHz Arduino can produce pulses at 1.45MHz (16M/11) and 187.5ns (3/16M) wide. For finer tuned signals a controller with a higher clock frequency is required, or additional circuitry. Finding the appropriate hardware is up to you.