Hi Bob, Thanks for your reply.
We are working on a master project, where we want to detect the magnetic radiation signals, which would affect the patients with Pacemaker devices. Thus, magnetic radiations may be ranging from very mild to maximum intensity. The wavelength would not be in too many colors, but a simple detection of the magnetic signal should do. On Jul 25, 12:18 am, Bob Kerns <r...@acm.org> wrote: > Your problem statement is too vague to be useful. I don't mean so much > useful to us, as useful to you. > > You really need to be a great deal more specific about what you want > to sense. The term "electromagnetic radiation" covers a range from > signals with wavelengths many orders of magnitude larger than your > handheld, to ones with wavelengths many orders of magnitude smaller. > > And intensities vary from ones capable of vaporizing your handheld, to > ones where you'd need a special isolation chamber and a good supply of > liquid helium to be able to detect. > > And then finally -- with this be modulated, pure, mixed? Are you > interested in determining the spectrum, the total energy flux, > direction? Do you seek to resolve multiple signals? > > Hopefully, you'll just need one of the simpler combinations of the > above factors, and can focus your efforts on that. Many smartphones > come with a light detector, or a camera, which can be used for a > certain range of electromagnetic radiation. > > If you're looking for powerline-frequency energy, or a similar range, > consider a small tuned resonant coil, hooked to an A-D pin on an > Arduino controller with a wifi or bluetooth interface. > > Microwave frequencies will require a whole other set of techniques and > skills -- resonant chambers, etc. Infrared, UV -- the camera might > work - try it and see. > > Narrow it down and your situation gets a whole lot simpler. > > On Jul 24, 11:14 am, Jaan <jahnavi.athul...@gmail.com> wrote: > > > Hi , > > > i am a student who is very new to Android platform. I am working on a > > project which has to sense the EMR (Electro magnetic radiation ) > > signals and notify the intensity of the EMR signals on the Android > > phone. > > > 1. Are there any available external EMR sensor devices which can be > > connected to the Android smartphones to get the intensity of EMR ? > > > 2. Or is it feasible to develop/implement a sensor app on Android. > > TO do so, the ANdroid phone should consist of a built-in Sensor. ( I > > am not sure how this is going to work). > > > thanks in advance. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
