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Ultrasound Time of Flight based positioning using the Bluetooth Low Energy protocol

机译：使用蓝牙低功耗协议的基于超声飞行时间的定位

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摘要

In this paper, application of the Bluetooth Low Energy (BLE) protocol is investigated, with the aim of achieving time-synchronization for Time of flight (ToF) measurements-based positioning. The proposed approach may provide a competitive solution for portable and wearable devices, medical devices, home automation systems, and sensor-based low-power systems for the Internet of Things (IoT). A simulation model was implemented for a 2D scenario using ToF measurements, considering a delay model and simulating an Additive White Gaussian Noise (AWGN) channel. The communication latencies were realistically modeled, using a dataset of measurements collected from a real device. The results show an achievable positioning accuracy of about 1 mm, significantly improving with respect to an unsynchronized Time Difference of Arrival (TDoA) positioning system, supervised using a BLE protocol [1]. The results demonstrate the feasibility of accurate and low-cost positioning systems, based on ToF measurements on ultrasound transmissions and triggered by BLE RF transmissions.
机译：本文研究了蓝牙低功耗（BLE）协议的应用，旨在实现基于飞行时间（ToF）测量的定位的时间同步。提议的方法可以为物联网（IoT）的便携式和可穿戴设备，医疗设备，家庭自动化系统以及基于传感器的低功耗系统提供竞争解决方案。考虑到延迟模型并模拟加性高斯白噪声（AWGN）通道，使用ToF测量为2D场景实现了仿真模型。使用从真实设备收集的测量数据集，对通信延迟进行了现实建模。结果显示，可实现的定位精度约为1 mm，相对于使用BLE协议监督的非同步到达时间差（TDoA）定位系统而言，该定位精度得到了显着提高[1]。结果证明了基于超声波传输的ToF测量并由BLE RF传输触发的，精确且低成本的定位系统的可行性。

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