Secondary School YPEC 2021

SS11-Watch Your Back

Due to the pandemic of Covid-19, students in Hong Kong usually spend a lot of time sitting in front of computers to have online lessons or sitting in the classroom for lessons. An improper sitting posture of the student could harm their health and body growth. Therefore, in this project, our group wants to invent a smart device called “Watch Your Back” (保背智多星). Which is a wearable smart device that consists of various flex sensors on it to monitor the bending rate of the user’s back. It also consists of IoT features to work with smart phones that provide health monitoring features to users.

The main feature of “Watch Your Back” is to assist users to keep their sitting posture in a proper angle. When users bend their back too much, the microcontroller will activate the vibration motor on “Watch Your Back” to alert the user to keep a proper sitting posture. “Watch Your Back” also has a statistics app on smart phones to record the data from the sensors. Users can keep tracking their back posture.

The prototype has successfully been invented and simulated different sitting positions by a wooden model. Significant improvements are expected in students’ sitting posture during face-to-face and online lessons and reduce the risk of suffering from back pain and injuries. It is hoped that the invention is able to raise students’ awareness on the significance of maintaining correct sitting position and posture.