汽车组合仪表有意电磁干扰空时域联合分离系统设计  

Design of Space Time Domain Joint Separation System for Automobile Combined Instrument with Intentional Electromagnetic Interference

作　　者：吴玮玮[1] WU Weiwei(Shaanxi Institute of Technology,Xi’an 710300,China)

机构地区：[1]陕西国防工业职业技术学院,西安710300

出　　处：《计算机测量与控制》2024年第7期252-259,共8页Computer Measurement &Control

摘　　要：有意电磁波与汽车仪器电磁传输波产生的混合干扰,降低了汽车组合仪表的稳定运行能力,造成仪表设备失灵;为避免上述情况的发生,设计汽车组合仪表有意电磁干扰空时域联合分离系统;在步进电机驱动电路中,设置汽车组合仪表控制器、分离电源与PCB电路板、有意电磁干扰数字传感器;分配有意电磁波空时域源地址,通过计算干扰信号平坦度的方式,确定脉冲参数的取值范围,实现汽车组合仪表有意电磁的空时域干扰效应分析;估算有意电磁波干扰信号的数目,按照信号分解的处理原则,求解联合分离修正函数,实现电磁干扰的联合分离;在设置频率范围在100 MHz~1 GHz之间、幅度范围为0.5~5 V、脉冲宽度范围为10~100 ns区间后,通过实验结果表明,设计系统应用后可以在混合信号中,按照空域、时域标准的不同分离有意电磁波,且分离后的信号波长、信号频率依然在1.0μm、300 Hz左右,不会因混合干扰降低汽车组合仪表的稳定运行能力。The mixed interference generated by intentional electromagnetic waves and electromagnetic transmission waves of automotive instruments reduces the stable operation ability of the automotive instrument cluster,causing instrument equipment failure.To avoid the above problem,an intentional electromagnetic interference space time domain joint separation system for the automotive combination instrument is designed.In the stepper motor drive circuit,the system designs the car combination instrument controller,separates the power supply from the PCB circuit board and intentionally electromagnetic interference digital sensors,assigns the spatial and temporal source addresses of intentional electromagnetic waves,determines the range of pulse parameters by calculating the flatness of interference signals,achieves the analysis of spatial and temporal interference effects of intentional electromagnetic waves in automotive combination instruments,estimates the number of intentional electromagnetic interference signals,solves the joint separation correction function by the processing principles of signal decomposition,and achieves the joint separation of electromagnetic interference.The experiment is set up under the conditions of frequency range between 100 MHz and 1 GHz,amplitude range between 0.5 V and 5 V,and pulse width range between 10 ns and 100 ns,experimental results show that the designed system can separate intentional electromagnetic waves from mixed signals according to different spatial and temporal standards,and the separated signal wavelength and frequency are still 1.0μm and 300 Hz,it will not reduce the stable operation ability of automobile combined instruments due to mixed interference.

关 键 词：组合仪表 有意电磁干扰 空时域 联合分离 源地址 信号平坦度 信号分解 修正函数 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]