Design of Space Time Domain Joint Separation System for Automobile Combined Instrument with Intentional Electromagnetic Interference
The mixed interference generated by intentional electromagnetic waves and electromagnetic transmission waves of auto-motive 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 spa-tial 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 sepa-ration correction function by the processing principles of signal decomposition,and achieves the joint separation of electromagnetic in-terference.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 in-tentional electromagnetic waves from mixed signals according to different spatial and temporal standards,and the separated signal wavelength and frequency are still 1.0 m and 300 Hz,it will not reduce the stable operation ability of automobile combined instru-ments due to mixed interference.
combined instrumentintentional electromagnetic interferencespace time domainjoint separationsource addresssignal flatnesssignal decompositionmodified function
NETL
NSTL
万方数据
