Vehicle Internal Electromagnetic Compatibility Diagnostic Test Methods And Systematic Research

Testing technology of EMC (electromagnetic compatibility) is one the most important study in EMC field. This thesis has provided a feasible design of EMC testing system, specially for armored vehicle base on basic theories and testing technologies of EMC. And it is also contributed by a deep studying on relevant technical achievement from both domestic and abroad. This paper detailedly narrated the overall design of the system (including both sections of hardware and software). And the operation procedure of detection and test are also methodically introduced in this paper.This EMS testing system combines many advanced technology such as magnetic field detection technology,frequency spectrum analysis technology , and have them worked in PC environment. Through which, people are able to have a eyeable picture for complex distributing of electrical magnetic field in PC screen, that is to say we will have invisible electrical magnetic field been visual for people with this system. The operating procedure is also simple to the operator , who just need a handy probe to test the whole system or each single motherboard,cable or connector in an ordinary laboratory, and it can locate the sensitive position quickly. Once the sensitive position be found, it will be much easier for people to solve the problem. Even it is convenient to operate for those people who have not much knowledge about EMC, which is one of the most outstanding features of this system. Beside the EMC test for armored vehicle, this system is also applicable for various military electric,military electrical,Machine facilities and subsystem. This system can detect and test for Conducted Emissions of Cable and Rediated Emissions of Electric Field (the range of Conducted Emission Test is : 9kHz～30MHz, the range of Rediated Emissions of Electric Field Test is : 9kHz～1GHz) . It could be widely used for various military electric,military electrical,machine facilities and subsystems to ensure they are exactly compliant with GJB151A-97(The Sensitivity and Electromagnetism Emissions Requirement for Military Equipment and Subsystem). The hardware adopted in this system are advanced and logical, and its panel is easy for people to operate; It also possesses perfect software design, which make itself be more convenient for people to handle .