公开了基于固液两相流体耦合起电的在线磨粒监测系统及方法,监测系统中,所述管路系统内生成预定流速的液体流路,自动加料装置配置成在所述液体流路中加入预定质量的固体颗粒,静态混合器连接在管路系统中以将所述固体颗粒均匀地混合在液体中以形成混合均匀的预定质量分数的固液两相流体,摩擦发电单元设在所述液体流路中且位于所述静态混合器的下游，所述摩擦发电单元与固液两相流体摩擦以产生电荷,在线监测装置包括实时监测固液两相流体中固体颗粒运动状态及分布的高速摄像机以及用于测量摩擦发电过程中产生的电信号的电流监测装置。

This patent discloses an online abrasive particle monitoring system and method based on coupling of solid-liquid two-phase fluids to generate electricity, in the monitoring system a liquid flow path with a predetermined flow rate is generated in said piping system, an automatic dosing device is configured to add a predetermined mass of solid particles to said liquid flow path, a static mixer is connected in the piping system to uniformly mix said solid particles in the liquid to form a uniformly mixed predetermined mass fraction The friction generation unit is located in said liquid flow path and downstream of said static mixer, said friction generation unit rubs against the solid-liquid fluid to generate an electrical charge, the online monitoring device comprises a high-speed camera for real-time monitoring of the movement and distribution of the solid particles in the solid-liquid fluid and a current monitoring device for measuring the electrical signal generated during the friction generation process.