Liquid flow velocity precision measurement device and method based on multi-channel SERF atomic magnetometer

The invention discloses a liquid flow velocity precision measurement device and method based on a multi-channel SERF atomic magnetometer, and the device comprises a laser generation module, a light beam collimation module, a linear polarizer, a circular polarizer, a Powell prism, a cylindrical mirror, an atomic gas chamber, and a detector array which are sequentially disposed along a light path direction. The liquid flow channel is arranged above the atomic gas chamber; and the magnetic particles are arranged in the liquid flow channel. The multi-channel atomic magnetometer can detect the position change of the magnetic particles in the liquid, thereby achieving the purpose of precisely measuring the flow velocity of the liquid. The SERF atomic magnetometer has very high sensitivity, can effectively detect weak magnetic field change, and is beneficial to detection of slow change of liquid flow velocity. 本发明公开了一种基于多通道SERF原子磁力仪的液体流速精密测量装置及方法，包括:沿光路方向依次设置的激光发生模块，光束准直模块，线偏振片，圆偏振片，鲍威尔棱镜，柱面镜，原子气室，探测器阵列，以及在原子气室上方设置有