基于自供电的磁流变阻尼器内部状态无线监测系统设计

Design of Self-Powered Wireless Monitoring System for Internal State of MR Damper

为了获取磁流变阻尼器内部状态参数并解决能量供给问题,设计了一套基于自供电技术的磁流变阻尼器内部状态无线监测系统。通过能量采集装置将服役状态下磁流变阻尼器中磁流变液的动能转换为电能,再经能量管理电路进行高效充放电管理,为无线发射模块和传感器供电,无线发射模块将传感器采集到的数据发送给外部接收模块进行处理。实验结果表明:采集到的能量能够驱动无线传感模块正常工作,该系统能准确获取阻尼器内部温度、压强信息,为磁流变阻尼器的进一步研究提供理论依据和技术支持。

A wireless monitoring system based on the self-powered technology is designed to obtain the internal state parameters of MR Damper and solve the problem of energy supply.The kinetic energy of magnetorheological fluid in MR Damper under the service condition is converted into electrical energy by the harvesting device.And a power management circuit is designed to efficiently manage the processes of charging and discharging,which supply power for the wireless transmitting module and sensors.Then the wireless transmitting module send the data collected by sensors to the external receiving module for processing.The experimental results show that the collected energy can drive the wireless sensor module to work normally and the system can accurately obtain the internal temperature and pressure information of the damper.All this provides the theoretical basis and technical support for the further research on MR Damper.