Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Hi,
I am thinking to use two sensors. One sensor detect a signal +motion and another sensor detect just motion. Is any way I can subtract these two signals?
Thanks
1st method. Digitize both signals and subtract them in software/firmware.
2nd method. Invert the polarity of one of the signals and then add them in analog in a summing OpAmp circuit http://www.ecircuitcenter.com/Circuits/opsum/opsum.htm
3rd method. Use inamp or differential opamp. the signals have to be scaled equally.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
