There is a large amount of inertial kinetic energy wasted during the driving of new energy driverless buses. In this paper, a novel multidirectional pendulum kinetic energy harvester, based on homopolar repulsion, is designed for low-powered sensors in new-energy driverless buses. The proposed system consists of three main components: kinetic energy harvest module, energy conversion module and power storage module. The kinetic energy harvest module includes a multidirectional capture mechanism and a deformation amplification mechanism, which captures the acceleration direction of the vehicle, and harvests the inertial kinetic energy through the pendulum swinging respectively. In the energy conversion module, deformation of the piezoelectric beam generates electricity, due to homopolar repulsion from the magnets on the pendulum and piezoelectric beam. The power storage module stores electricity in supercapacitors to power the inertial measurement unit, acceleration sensor and other low-power sensors. The proposed system has completed simulation analysis and prototype tests, which show that the system featuring voltage of 13.6 V and power of 1.233 mW, illustrating the feasibility of self-powered applications in low-power sensors for new energy driverless buses.

Graphic Abstract

Flow chart of the proposed kinetic energy harvester

中文翻译：

---

基于同相斥力的多方向摆动能采集器，用于新能源无人驾驶公交车中的低功率传感器

在新能源无人驾驶公共汽车的驾驶过程中，浪费了大量的惯性动能。在本文中，设计了一种基于同极排斥的新型多向摆动能收集器，用于新能源无人驾驶公交车中的低功率传感器。拟议的系统由三个主要组件组成：动能收集模块，能量转换模块和功率存储模块。动能采集模块包括多向捕获机构和变形放大机构，其捕获车辆的加速方向，并分别通过摆的摆动来捕获惯性动能。在能量转换模块中，压电梁的变形会产生电能，由于摆锤上的磁铁和压电梁产生了同极排斥作用。功率存储模块将电能存储在超级电容器中，以为惯性测量单元，加速度传感器和其他低功率传感器供电。拟议的系统已完成仿真分析和原型测试，表明该系统具有13.6 V的电压和1.233 mW的功率，说明了在新能源无人驾驶公交车的低功率传感器中自供电应用的可行性。

图形摘要

拟议的动能采集器的流程图