WIN1201-26 Rfid Accessibility Tool

At first, our considerations composed of using only google assistant for reaching out to the cane in case if the user forgets or misses in the indoor environment. But, that would be helpful only if there is an internet connection. In order to avoid that, embedded the clap sensor, which works in absence of an internet connection.  Using RFID tags, obstacles will be detected only in a confined space or indoor areas. To use it extensively in outdoor environments also, have been used ultrasonic sensors to detect obstacles everywhere with a maximum range of up to 4 meters. For the user’s safety on wet surfaces, have been integrated the moisture sensor and also included the SOS button for emergencies. For the light-weight and user-friendly, utilized the same ultrasonic sensors(obstacle detection) for stair-case detection. In regards to the self-security of the user, because of using Blynk application, an attacker cannot intercept the traffic between hardware and server.

• The major challenge is to avoid sensor movement, to eliminate that, sensors should be positioned correctly for desired results.
• To confront emergency situations, an SOS button has been embedded in the cane to seek assistance for the user’s safety.
• Another key challenge is using multiple sensors at one instant, which leads to added noise to the circuit, and resulted in inaccurate sensor readings. So, we tested each sensor individually and added a defined delay given rise to work all the sensors properly. This is how we rectified this issue.
• Moreover, depending on the staircase model, sensor readings have been changed. So we took and tried around five to six types of stair-case and tested sensors in all different types of staircase & calculated average value and used the same in the project.
• As per the sponsor’s requirement, we have embedded the google assistant, but it does work only using an internet connection. To avoid that, we have attached a clap sensor too, to find the stick when there is bad network condition and in absence of power.
• To avoid the weighty product, considered using the ultrasonic sensors for stair-case detection

Finally, we were successful and happy with the achieved following results that have been accomplished in the given timeline.

• Establishing the Cane prototype.
• Set up an SOS button in the circuit to safeguard the user from emergency situations.
• An assistive device that smart cane provides a better walking experience and
  reduces the risks of accidents and injuries.
• Reaching for the cane in both the presence and absence of an internet connection in closed spaces.
• Make it to detect the obstacles, stair-case, and wet surfaces effectively in both indoor and outdoor environments.
• Make it communicating the cane with the user and user-friendly.
• In regards to security, the Blynk application is best at its level to safeguard or restrict hackers.

Besides gaining the technical ability to complete your project, we have learnt to adapt and cooperate with one another regarding different schedules and timezones. From the sponsor’s perspective, we have managed to develop a safe-security product. We have even learnt to make use of the available resources to their maximum capacities. It has been difficult during this pandemic to gather and discuss our project and goals, but we overcame those difficulties by adapting to the virtual trend.

Throughout this project, we have managed to inculcate self-study skills and gained an intermediate level of technical knowledge as regards hardware testing, programming, designing, and became familiar with current trending technologies used in the project. Additionally, we have acquired presentation and documentation skills.