Design and Fabrication of a Flexible Wearable Device for Remotely Monitoring Physiological Signals using BLE

Other Team members: Habib Mohammad, Raihan Amin Rana, Md. Liton Ali.

Supervisor: Dr. Muhammad Abdullah Arafat.

In this project, we focus on developing a flexible wearable device that remotely monitors vital physiological signals such as heart rate, blood pressure, oxygen saturation, and motion. To maintain low power consumption and continuous & real-time data transmission, we are utilizing Bluetooth Low Energy (BLE) technology. The wearable's design will incorporate a flexible substrate for comfort and accuracy, making it ideal for long-term health monitoring applications.

Progress so far:

Flexible PCB Manufacturing

Collaborating with local PCB vendor Taru Prajukti to develop a feasible production process for flexible PCBs, utilizing locally available CNC milling machines, Silicone, PP Ink, Sonakote, etc.

ECG Circuit

Currently, we are using this circuit to capture the ECG data and send it to computers with BLE using the controller.

Circuit for testing BLE functionalities of the controller

Before implementing it on a flexible substrate, we designed this PCB to test the BLE functionalities of the circuit. Later we will be fabricating it on flexible substrate by collaborating with a local PCB vendor.

Flashing the CC2540 BLE Chip

After assembling the components on the PCB, we noticed that the device could not be detected in the device manager. To solve this issue, we have flashed the BLE chip using the CC debugger and the board is working fine now.

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