【摘要】 为实现微波雷达应用场景的多样化和智能化，将微波雷达技术与姿态检测功能相结合，设计了一款能大幅度降低算法复杂度，并可以实现基本人体姿态检测功能的多普勒微波雷达。该微波雷达主要包含扇形波束天线、一体化微带混频电路、人体信号检测电路、姿态检测功能的逻辑实现等单元电路。整体电路分别使用电路仿真软件High Frequency Structure Simulator、Advanced Design System、Multisim进行仿真优化。最后经过系统集成测试可以得知，在5.8 GHz的工作频率下，在系统的探测区域内可以输出能被单片机检测的15～40 Hz范围内的人体移动信号、1～7 Hz范围内的人体微小动作信号以及250～500 mHz范围内的人体呼吸信号。这些人体信号可用于智能家居系统中人体的行为预测和智能医疗领域中病人的呼吸检测等方面。更多还原

【Abstract】 In order to diversify and intelligentize application scenarios of microwave radar, a doppler microwave radar which can greatly reduce complexity of algorithm and realize basic human attitude detection function is designed, It combines microwave radar with attitude detection function. The microwave radar mainly includes sector beam antenna, integrated microstrip mixing circuit, body signal detection circuits, logical realization of attitude detection function and so on. Circuits is simulated and optimized by High Frequency Structure Simulator、Advanced Design System and Multisim respectively. Finally, after system integration test, it can be known that the system can output moving signal in the range of 15～40 Hz, the tiny-action signal in the range of 1～7 Hz and the breathing signal in the range of 250～500 mHz by operating frequency of 5.8 GHz and they can be detected by MCU. These signals can be used for human behavior prediction at smart home system and intelligent medical field for detection of patients’ heartbeat and respiration.更多还原