发表机构
WaveCore, Department of Electrical Engineering (ESAT), KU Leuven（荷语鲁汶大学电气工程系（ESAT））
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出SmartBike低功耗边缘物联网系统，集成多类传感器与BLE通信，采用Zephyr RTOS实现，可监测骑行安全，续航约21个月，为骑行安全提供解决方案。
AI 中文摘要
城市骑行是一种可持续的交通方式，但由于传统自行车的情境感知能力有限且缺乏主动安全辅助，骑行者在密集交通中仍极易受到伤害。本文提出SmartBike，一种用于骑行者安全的低功耗物联网（IoT）平台，结合了盲区监测、骑行者使用检测、定位以及无线边缘到网关通信。该系统由安装在自行车上的IoT节点和网关辅助监控界面组成。节点集成了三个飞行时间传感器用于盲区检测、一个IMU模块用于运动感知和车载速度估计、一个GNSS模块用于定位，以及一个安装在鞍座上的压电换能器用于事件驱动唤醒。为满足IoT节点的能量约束，设计采用了压电触发激活、特定应用的传感速率，以及紧凑的无连接蓝牙低功耗（BLE）广告以实现低开销传输。固件在Zephyr RTOS中采用轻量级状态机架构实现，而网关执行被动BLE扫描、有效载荷解码和实时仪表板可视化。BLE有效载荷被缩减至11字节，功率分析显示传感占总能量预算的90%以上，而无线通信的总体消耗更少。在典型通勤条件下（平均每天40分钟），使用12600 mWh电池的估计寿命约为21个月。
英文摘要
Urban cycling is a sustainable mode of transportation, but cyclists remain highly vulnerable in dense traffic because of limited situational awareness and the lack of active safety assistance on conventional bicycles. This paper presents SmartBike, a low power Internet-of-Things (IoT) platform for cyclist safety, combining blind spot monitoring, rider usage detection, localization, and wireless edge-to-gateway communication. The proposed system consists of a bike-mounted IoT node and a gateway assisted monitoring interface. The node integrates three time-of-flight sensors for blind spot detection, an IMU module for motion sensing and on-board speed estimation, a GNSS module for localization, and a saddle mounted piezo-electric transducer for event-driven wake up. To satisfy the energy constraints of the IoT node, the design employs piezo-triggered activation, application specific sensing rates, and compact connectionless Bluetooth Low Energy (BLE) advertisements for low overhead transmission. The firmware is implemented in Zephyr RTOS using a lightweight state machine architecture, while the gateway performs passive BLE scanning, payload decoding, and real-time dashboard visualization. The BLE payload is reduced to 11 bytes, and power analysis shows that sensing accounts for more than 90% of the total energy budget, while wireless communication represents less overall consumption. With a 12600 mWh battery, the estimated lifetime reaches approximately 21 months under typical commuting conditions (Average 40 min per day).
Comments5 pages, 4 figures, 4 tables. Presented at the 46th Symposium on Information Theory and Signal Processing in the Benelux (SITB 2026), Ghent, Belgium
Journal refProceedings of the 46th Symposium on Information Theory and Signal Processing in the Benelux (SITB 2026), Ghent, Belgium, 19-20 May 2026, ISBN 978-90-834-3164-2
