The cellphone does, in general, have a "sensor" that consists of the cellphone radio. This is, as I understand it, a multi-function radio that uses software techniques to simulate the electronics that would be present in a more conventional design, and it is in theory capable of all sorts of tricks. But that software is very complex and almost certainly not accessible to the app programmer, so you'd have very little chance of "hijacking" it to do your sensing, unless you could somehow get one of the phone engineers involved.
And like I said, you DON'T want to control the pacemaker -- that will send any potential real investors running the other direction (BIG liability issues). At most you want to just passively read the unit. On Jul 24, 10:42 am, Akila Sethuraman <sethuraman.ak...@gmail.com> wrote: > Thanks all for your inputs. But now, your answers have triggered some more > questions- > 1. Just like Mr.Dan has proposed, we are planning to implement a simple > pacemaker. Its basic function would be to periodically check the heartbeat > and see if it is irregular. If the heartbeat is say 50 per minute, then the > pacemaker would regulate it to 72 . Isn't that sufficient ?? > 2. Also, i would like to know, why do i need an external sensor. Most of the > cellphones do have a sensor in-built which can sense the EMR. So, in that > case , cant I use the in-built sensor ?? > > Thanks for your time and suggestions. > > On Sat, Jul 24, 2010 at 7:37 AM, Bret Foreman <bret.fore...@gmail.com>wrote: > > > > > As for connecting sensors to the phone, your best bet will be USB > > based sensors. Almost the entire sensor market has gone over to these > > devices because of their easy connection to PCs. The only hitch will > > be getting access to the hardware I/O specifications of the sensor so > > you can talk to it. Most sensor companies provide ready-made software > > and don't publish the I/O specs. You'll need to find one who is > > willing to work with you. The good news is that there are many of them > > out there and they are hungry to get their hardware into new > > applications. > > > As for the specific sensor, you need to get a physicist involved in > > your project. The human body is mostly water and the penetration of > > radio waves is inversely related to frequency. This is well studied > > and will tell you which bands are going to concern your system. The > > good news is that low frequencies (the most penetrating) are easy to > > demodulate with modern high speed A/D systems (like the ones you will > > have in your USB sensor). You need to get a signal processing expert > > to help you with that part but modern Android phones have enough > > processing power to handle the task, as I've found in my own work. > > You'll also need some analog electronics for the "front end" to boost > > the signal enough to demodulate it. Get an electrical engineer to help > > you with that. > > > Overall it sounds like a fun project. In general, I recommend > > consulting experts whenever you can rather than stumbling around. Most > > are very generous with their time when helping students. Good luck, > > and let me know if you get the system working well enough for a demo. > > I know a huge number of venture capitalists who are always on the > > lookout for investment opportunities. > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Beginners" group. > > > NEW! Try asking and tagging your question on Stack Overflow at > >http://stackoverflow.com/questions/tagged/android > > > To unsubscribe from this group, send email to > > android-beginners+unsubscr...@googlegroups.com<android-beginners%2bunsubscr...@googlegroups.com> > > For more options, visit this group at > >http://groups.google.com/group/android-beginners?hl=en > > -- > Regards, > Akila -- You received this message because you are subscribed to the Google Groups "Android Beginners" group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
