Electromagnetic compatibility technology related to vehicle safety
Have you ever thought that a car driving on the road may affect the work of military radar? The electronic equipment of the car will endanger its normal driving. The electromagnetic interference generated by the car phone will also affect the driving safety of the car. These are cars. The impact of electromagnetic interference, if the car's electromagnetic compatibility is good, then these interferences will be avoided to the utmost. Recently, at a seminar on electromagnetic compatibility of automobiles held in Beijing, some experts suggested that automotive electromagnetic compatibility technology has received increasing attention due to the safety of driving.
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Automotive electronics are full of interference
In the past, automotive electronics brought more comfort and convenience, such as the use of electric lifting windows, central locking, etc. These products have replaced existing mechanical systems and are now increasingly being extended to safety systems. Application. Industry insiders told reporters that automotive electronics has entered the car's control system, such as providing important driver information, controlling the engine, avoiding collision monitoring and implementing intelligent control of the interior environment. Therefore, the wide application of automotive electronics makes electromagnetic compatibility a major consideration in the design of automotive electrical systems.
Automotive electronics are often in a noisy, noisy environment during automotive operation, so automotive electronics must have excellent electromagnetic compatibility (EMC) performance.
Automotive electromagnetic compatibility has become an important issue
Automotive electromagnetic interference has great harm. According to experts, electromagnetic interference (EMI) generated in automotive electronics and automotive electronics will emit electromagnetic waves around, affecting the normal operation of other communication equipment and electronic equipment, and disrupting part of the radio and radar of missile systems carried on military vehicles. And the normal operation of the computer circuit control system. In addition, the electromagnetic interference generated by the car can not only affect the normal operation of the external electronic equipment, but also affect the normal operation of the automotive electrical system itself. At the same time, external electromagnetic interference will also affect the normal operation of electronic equipment on the car.
In most automotive control system designs, electromagnetic compatibility technology is becoming more and more important. Experts believe that in order to prevent the electromagnetic environment interference from adversely affecting the performance of automotive electronic products, to avoid the loss of the function of automotive electronic products, and to ensure that a large number of automotive electronic devices can work independently and reliably in the same electrical system, it is necessary to determine a Appropriate interference limits to ensure adequate safety capacity limits between electromagnetic interference radiation and electromagnetic sensitivity (EMS) limits. Therefore, solving the electromagnetic compatibility of automotive electrical systems has become an important issue.
Disparity in electromagnetic compatibility research at home and abroad
Countries with advanced automotive technology attach great importance to the research on electromagnetic compatibility of automobiles, and have formulated corresponding regulations. Major automobile manufacturers have invested funds to establish corresponding automotive electromagnetic compatibility research centers to carry out test and approval of their vehicles. The mass production of automotive electronic components is inspected, the liability for accidents is analyzed, and the electromagnetic environment test of the vehicle is analyzed and described, so as to propose the technical requirements for the electromagnetic compatibility design of the vehicle electrical system and automotive electronics.
From the domestic research situation, industry experts believe that at present, several major auto manufacturers with relatively strong domestic strength have recognized the importance of electromagnetic compatibility and have started research in this area, but compared with advanced countries, most domestic enterprises There is a wide gap in this area, and there are very few establishments of electromagnetic compatibility research centers.
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