Ultrasonic detector with high-pass filter
This project is to design and produce a working prototype of an ultrasonic detector working in the 12kHz-150kHz waveband. It will require a micropower ultrasonic low noise microphone preamp with a high pass filter. The filter output will be fed to a micropower amplier / comparator circuit to form the ultrasound detector limited to the 12kHz-150kHz waveband.
The system should operate from an existing power source for a data logger that is operating at [url removed, login to view] derived from a 9V LiPo battery.
This project will be a micropower version of an existing successful ‘low-power’ system (A circuit diagram of this analogue circuit is available) to make it viable as a portable device for long-term unattended field use.
On award of the project 30% of the total value will be released followed by 10% after schematic completion, 10% after PCB design, 20% after notification of the working prototype. The final 30% to be released after delivery and personal testing.
14 freelance font une offre moyenne de £618 pour ce travail
Hi, I have plenty of PCB, analog, acoustic, and ultra low-power design experience. Please see portfolio and PM.
Specializing in audio DSP and I can with 100% 1 week shipping SCH, PCB, Gerber, 3d model. 2 weeks to manufacture prototype shipping 3 weeks development of software. 4 adjust PCB and shipping.
Dear Sir, I have 10 year experience on analog design, audio system, power electronics, digital motor control, inverters, converters, DC-DC converters, power distribution sysetms, PCB design, circuit simulation, syst Plus
Hi, I can provide you the solution design for this prototype. I have recently worked upon a micro-power amplification circuit. I am sending you the detailed approach in the private message. Kindly go through it Plus
Sir, I can do this project. I have more than 10 years working experience in analog circuit design in a Japanese company in the Philippines.
Sir,I have degree with electronics. I can do this project. I have more working experience in analog circuit.
HI, let me propose you a different architecture, use digital architecturte instead of use analogue one. I understand you are worry about power consumption but please consider the advantage we can obtain thank you Plus
Hello I'm a Final Year Undergraduate Student - Electrical Engineering Majors. I've done quite a number of Digital and Analog; System Design and Signal Processing. Hope I get to work with you. Regards Zaid A.
It's significantly easier to achieve micropower operation with an all-analog circuit than a DSP-based one (though I can do both for you). In fact if 1mA is your target that's fairly ample with analog circuitry! Bid Plus
Hello, I am an electronic engineer in Beijing. My name is Peter. I think I can do the project well. Because I like analog technology and do some projects about power\AC weak current measurement. And I am good at the AV Plus