Research On The Personal Safety In The Automotive Electromagnetic Environment

With the rapid development of the electromagnetic equipment such as mobile phone, microwaveand radio et al, electromagnetic radiation on human safety has raised national and world-wide attention.Occupants in the car are exposed in electromagnetic environment, will be affected all kinds ofelectromagnetic emission of the electromagnetic wave radiation in the car, and in electric car with moreelectronic products, this threat is especially serious. Therefore it is very important to research thepersonal safety in the electric vehicle, the main research contents are as follows:(1)According to the need of simulation,3-d model and mesh model of EV body suitable forelectromagnetic environment simulation were established, and take the antenna in vehicle as anexample, through different calculation methods, proved the accuracy of the models.(2)Set up electric automobile audio antenna, harness, DC-DC converter, motor from theelectromagnetic radiation of components of the model, and analyzes the mechanism of productradiation, according to the national standard, access LISN, simulate the electric motor conductioninterference, puts forward several methods of reducing conducted interference. Simulated the carantenna, harness, DC-DC car converter radiation interference, analyzes the simulation results, get thesources of radiation characteristics.(3) Research on the human body electromagnetic environment and the influence of radiation in thecar. According to the bio-electromagnetic theory, established the model of human body for SARcalculation, based on the MoM method, simulate the human interference with the vehicle in differentlocations of the EV to calculate the SAR value of human body. Simulate combinations of interferencesource the person in different seat position in the car, provide a corresponding reference, for the relatedanalysis of electromagnetic radiation absorption of human body about beneficial or harmful effects.Finally put forward several methods to reduce the electromagnetic radiation in the car.