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Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

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BLE-Based Custom Devices for Indoor Positioning in Ambient Assisted Living Systems: Design and Prototyping.

David Díaz-Jiménez1, José L López Ruiz1, Juan Carlos Cuevas-Martínez2

  • 1Computer Science Department, University of Jaén, 23071 Jaén, Spain.

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Summary
This summary is machine-generated.

Researchers developed two reconfigurable Bluetooth Low Energy (BLE) devices, a smart wristband and a configurable beacon, offering enhanced data control and energy efficiency for IoT applications. These devices provide extended battery life and reliable data transmission, suitable for ambient assisted living.

Keywords:
GATTZephyr RTOSbluetooth low energyfog computingindoor localizationreconfigurable systemswearable devices

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Area of Science:

  • * Electrical Engineering and Computer Science
  • * Internet of Things (IoT)
  • * Wearable Technology

Background:

  • * Commercial IoT platforms often lack configurability, data transparency, and energy efficiency.
  • * Existing solutions may not meet the specific demands of research testbeds or ambient assisted living environments.

Purpose of the Study:

  • * To design and prototype two reconfigurable BLE-based devices: a wearable smart wristband and a configurable beacon (ASIA Beacon).
  • * To overcome limitations of commercial platforms regarding configurability, data transparency, and energy efficiency.
  • * To validate the hardware and software development process for these novel devices.

Main Methods:

  • * Development of a wearable smart wristband with inertial and biometric sensors.
  • * Engineering of a configurable ASIA Beacon with dynamic transmission parameter adjustment (channel, power).
  • * Utilization of energy-aware components, Over-The-Air (OTA) update support, and 3D-printed enclosures.
  • * Firmware development under Zephyr Real-Time Operating System (RTOS) with standardized data interfaces (GATT, MQTT).

Main Results:

  • * Demonstrated improved Received Signal Strength Indicator (RSSI) stability in anechoic chamber tests.
  • * Achieved extended device autonomy: up to 4 months for beacons and 3 weeks for the wristband.
  • * Validated reliable real-time data exchange capabilities.
  • * Confirmed feasibility of integration into IoT architectures and research testbeds.

Conclusions:

  • * The designed reconfigurable BLE devices offer significant improvements in configurability and energy efficiency.
  • * The devices are suitable for integration into IoT architectures and research testbeds.
  • * The developed technology shows potential for deployment in ambient assisted living environments.