Patient Monitoring Smart Wheelchair

As part of my final year project our team chose the topic as Patient Monitoring Smart Wheelchair. We wanted to make something for the society. As a part of one of my earlier projects Improving Infrastructure for specially challenged citizens in Vashi we had conducted a survey. We found out that the existing infrastructure in Vashi(Navi Mumbai, India) is not at all disabled friendly and same is the situation in majority of India. On top of that the modern assistive technology is too expensive for the common man or aam aadmi.

proportion of diabled population

Above figure shows the percentage of disabled population to total population in India as per 2011 census. In states like Maharashtra, Andhra Pradesh etc. the percentage is very high.

type of disability

Above figure shows the proportion of disabled population by type of disability. We can see that disability in movement accounts for 20.3 % and multiple disability 7.9%. This led us to the idea of making a smart wheelchair.

rural vs urban

This shows that a major chunk of the disabled population lives in rural India. Our market analysis led us to the finding that all the modern electric wheelchairs available in the market have outrageous price tags.

market analysis

So we decided that our wheelchair would be affordable. Then depending on the analysis of disabilities we found out which all modes should be incorporated into this smart wheelchair.

The modes selected are :

  • Voice control mode
  • Gesture control mode
  • Joystick control mode

Patient monitoring was thought of as an added service. Initially the plan was to measure heart rate, body temperature and blood pressure. But due to time constraints we limited to just measuring body temperature and displaying it on a LCD.

Here is a short video of the completed project.

The bill of materials is as follows.

bom

As you can see we achieved the cost reduction. So that is all from my side in this post. Thank you for patiently reading this and reaching till the end. If you people want a post about the technical details I will require at least 10 Word press likes Winking smile. Share with as many as you can. Maybe someone will take this idea to the next level. Thank you once again for reading this post.

 

P.S: I just felt like sharing this news article with you all.

http://economictimes.indiatimes.com/news/politics-and-nation/government-set-to-bring-private-sector-under-the-new-disability-legislation/articleshow/48780998.cms

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4 thoughts on “Patient Monitoring Smart Wheelchair

  1. Hi Manpreet,

    I see that the cost per Launchpad is 1/5 the cost of the wheelchair itself!

    That is too much. Maybe you are aware that you can use the MSP430 chip by itself, without the Launchpad? just needs a resistor and a cap, and of course the VCC of 3 volts. Try to contact Texas Instruments, they used to be generous in providing samples of the MSP430 chips. If that doesn’t work, contact me, we’ll try to work some way to cut 10% off that BOM. Also, do consider that when comparing BOM to commercial products, you have to take into account labor, design, other manufacturing costs, distribution, and most importantly for a product to serve the disabled, support. I do not see a charger for those batteries in the BOM (their price looks quite low, how far can they go? does that compare well with the Ostrich?). Of course you do achieve some economies of scale when manufacturing many units, but all in all, I would not expect a “real” price to be sustainable under INR 30,000. Which is still half the Ostrich, so there might be some opportunity there. Congratulations!

    ATXinventor, from Austin, Texas

    • Very insightful comment. First of all thank you so much for reading the article. Those cost factors that you mentioned are absolutely relevant and thank you for bringing those into my notice. And regarding the part of using the microcontroller without launchpad, we thought of it as well but time didn’t permit making our own pcb. But definitely that will reduce the price. Thank you for your valuable feedback. Ask your points are duly noted and will be considered in all of my future projects.😁😁😁

  2. Given the context, y’all using the Launchpad for this stage of this project was, IMHO, the Right Choice, and additional congratulations for that bit of accidental wisdom.

    oh, custom-made PCB… I feel your pain.
    Nowadays, for through-hole components, after pre-prototype on breadboard, my next step is to use one of those generic PCBs, like this one or similar: http://www.adafruit.com/images/970×728/571-02.jpg

    Custom-made PCBs have their place, and for me at least, thinking that I “needed” PCBs and trying to find a better method was the way to my first patent… A custom design PCB is maybe necessary when you are using SMD or SOIC components… even then, there are generics that, if cheap enough, are really worth it so as to avoid the trouble and TIME of design, transfer, chemicals…

    My experience has been that some professors, mistakenly, see a home-brew PCB as a mark of engineering skills… With all due respect, I would see there the opposite: a student, devotee or professional who makes his own PCBs when simpler, cheaper, faster alternative is available is someone who has not yet gained an understanding of the “flow” of processes that is part of engineering genius. Yes, skillfull, maybe artistic, showing attention and dedication. Practical, “real life”, no. The “right” BOM is not the same, for each different stage of development… And that’s all right, and you got it.

    So, just a few thoughts on these matters. Again, congrats for your work, and your generosity with the knowledge that you share through these pages. I see you handle many boards and MCUs, impressive. Personally I went that way for a while, but have recently decided, after almost two years of being off electronics, to get to grok the MSP430g2553, so I am re-exploring the basics and learning from those who have been there already.

    Msp-gcc on Xfce on Fedora.

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