[tog] [091labs-private] posture sensors

Gleb Lebedev gleb at gleblebedev.com
Wed Apr 8 12:25:43 CEST 2015


I was thinking recently of the similar solution based on esp8266+battery
cell+IMU sensor. Multiple devices could be attached to the body and
connected via WiFi. I don't have IMU at the moment but I have esp8266 and
power regulators.
On 8 Apr 2015 11:20 am, "myr" <iammyr at email.com> wrote:

>  Hi Gerry, Will and Gleb,
>
> thanks a million for your help! I've checked out kinect because I
> remembered that a couple of years ago, I saw a version of kinect to apply
> directly on the hand and track finger movements. However, i could not find
> it anywhere (maybe it's not yet in production).
>
> that one would have been something to consider. while the usual kinect or
> another external camera, would not be feasible because this solution should
> track the position everywhere. it should be wearable. at list ideally, this
> is how i was planning to deploy it. i've seen some wearable devices to
> track movements so it should be possible to do what i have in mind.
> however, they usually do not consider the "angle". correct me if i'm wrong.
> maybe i'd only need to hack one of them to add the angle detection. i'd
> love to know whether any of you has a more precise idea than mine on how to
> achieve this :) or wants to help ;p
>
> Thanks a lot!
> Myriam
>
> On 08/04/2015 17:59, myr wrote:
>
> Hi Gerry,
>
> basically I would like to support someone I know, on the task of keeping a
> correct posture.
>
> to give you an idea on the size of this issue, imagine that when for
> instance one shoulder is lower than the other, this person can not write
> for the pain felt in the arm. So the issue is pretty big :p same with the
> hips that cause pain in the knees.
>
> usually these body parts are only very slightly incorrectly positioned.
> that's why i mentioned that the sensors should be able to detect "with some
> accuracy".
>
> measuring the angle could be useful for detecting the incorrect position
> of wrists, knees and maybe parts of the feet.
> I'm not too sure about motion but maybe could be useful for reporting
> purposes. and acceleration indeed, you're right, doesn't sound too useful
> at all.
>
> i'm not too sure kinect could be small enough to be applied to all the
> different body parts. would you suggest to try it?
>
>
> Thanks a million, Gerry ;)
> Myriam
>
>
>
> On 08/04/2015 17:48, gerryk wrote:
>
>   The sensors you are describing are good at detecting
> motion/acceleration and relative angle/position, but not so good at
> detecting absolute positioning in 3d space.
>  Really, you are looking at something like a Kinect with some joint
> markers, like ping-pong balls.
>
>  I have done some playing with magnetometers and gyros for quadcopters and
> head-tracking (for gaming), but as I said, these will only give you
> relative positioning and motion, not absolute.
>
>
>  Could you let me know more about the tasks you have in mind?
>
> On 8 April 2015 at 10:40, myr <iammyr at email.com> wrote:
>
>> Hi all,
>>
>> I would like to assemble a system that is able to sense the position of
>> different parts of the body with some accuracy.
>> I imagined it should rely on accelerometer, gyroscope and maybe also
>> magnetometer, for this purpose.
>>
>> Would you suggest to use a different set of sensors?
>> Would you know whether a kit exists that I could buy, which already does
>> all this? In that case I may just focus on calibrating them together
>> otherwise, could you suggest which ones to buy so that the overall size
>> of the sensing mote is still practical (quite small)?
>>
>>
>> Thank you so much for your help!
>> Myriam
>>
>> P.S. when is the deadline for submitting to the dublin makers? couldn't
>> find it on the website
>>
>> --
>> Add some things to: http://wiki.091labs.org/
>>
>
>
>
> --
>
>
>  Contact me securely at secure at gerryk.com
>  Download my public key from http://gerryk.com/secure
>  My BTC Wallet *1KEVnFpKrzHrgfmmRTUeBLFsWxMp1EWWY5*
>  --
> Add some things to: http://wiki.091labs.org/
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.tog.ie/pipermail/tog/attachments/20150408/c8e35728/attachment-0001.html>


More information about the tog mailing list