Smart Chair for Monitoring of Sitting Behavior

Project Title

Smart Chair for Monitoring of Sitting Behavior

Project Area of Specialization Computer ScienceProject Summary

The Smart Chair is an ergonomic office chair that helps you achieve a relaxed and well-supported posture. But it is much, much more. It is a complete and innovative seating system that brings together all our expertise in the field of ergonomics, technology and sustainability. The Smart Active technology is built into the chair. It gives a vibration signal when it’s time to get up out of your chair.

A good chair promotes healthy working in the office, but you also need regular movement. What about fetching coffee with your colleagues, a stroll round the block during lunch break, a wander round the office while thinking, or standing up while on the phone. That’s why the Smart office chair gives you direct feedback when you’ve been sitting on the chair for too long. By teaching yourself an active work style, you get the best out of yourself. And you go home feeling fit after a long day’s office work!

Smart Mobile Controlled Chair is basically designed to facilitate user based on timely notification and notify with the help of mechanical vibration to have a walk. It provides a complete schedule of user by providing timely information about the activities (e.g. When to have lunch, prayer alert etc.) User can also customized their own schedule.

Project Objectives

• To facilitate the office sectors and to achieve maximum comfort output from the user.

• To decrease user tiredness by providing smart solution to get customized notification of their daily needs by android application.

• To design a smart chair which can gives user posture awareness for a more active throughout the day.

Project Implementation Method

The proposed smart chair system constituted by pressure sensor array, data acquisition module and computational terminal. A 52 by 44 piezo-resistive sensor array shown in Figure 1 was used, with a thickness of 0.25mm, which is thin and flexible enough for the non-invasive application in this study. The sensor array was composed of two layers of polyester films, with the horizontal silver electrode strips and the other vertical on one layer. This orthogonal zebra pattern resulted in a network of silver strips with a resistive unit at each crossing of the sensor array. The resistive unit (circuit shown in Figure 1) is sensitive to pressure, with a resistance of more than 2M? at zero load and around 5K? at full load. For simplicity and efficiency, not all these 2288 sensing units were adopted, but 64 (8 by 8) evenly distributed sensing units in the sensor array were selected in this study to measure the pressure pattern at the body-seat interface, with each sensing unit around 4.5mm apart from the other.

Benefits of the Project

Sitting is a common behavior of human body in daily life. It is found that poor sitting postures can link to pains and other complications for people in literature. In order to avoid the adverse effects of poor sitting behavior, the proposed project would be a highly practical design of smart chair system, which is able to monitor the sitting behavior of human body accurately and non-invasively. Smart Chair can gives you direct feedback by means of a vibration signal in the seat cushion and a personal App.

Technical Details of Final Deliverable

• Android OS Application Software
• Cloud/Server Based Application
• Smart Chair Hardware System

Final Deliverable of the Project HW/SW integrated systemCore Industry MedicalOther Industries IT , Health , Security Core Technology Internet of Things (IoT)Other Technologies Robotics, Cloud Infrastructure, Shared EconomySustainable Development Goals Good Health and Well-Being for People, Decent Work and Economic Growth, Industry, Innovation and Infrastructure, Reduced Inequality, Partnerships to achieve the GoalRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	79500
Raspberry Pi Module	Equipment	2	9000	18000
Raspberry Pi Compatible Camera	Equipment	2	4500	9000
Project Casing	Equipment	2	1500	3000
Raspberry Pi Power Adaptor	Equipment	2	750	1500
Load Sensor	Equipment	2	3500	7000
Gyro meter	Equipment	3	2000	6000
PIR Motion Sensor	Equipment	2	500	1000
PPG Sensor Module	Equipment	3	2500	7500
Vibration Sensor	Equipment	2	3000	6000
Pressure Sensor	Equipment	3	3500	10500
Overhead / Printing	Miscellaneous	1	5000	5000
Stationary / Tools	Miscellaneous	1	5000	5000