By Donald G. Baker
Explains and resolves the electromagnetic compatibility demanding situations confronted by way of engineers in transportation and communications
This ebook is a mathematically-rich extension of classes required to take care of the Federal Communications fee (FCC), the Canadian criteria organization (CSA), and the eu Union certifications. The textual content offers an in-depth learn of the electromagnetic compatibility (EMC) concerns on the topic of particular subject matters in transportation and communications, together with mild Rail Transit, shadow results, and radio useless spots, throughout the research of real-world case reviews within the usa and Europe. the writer presents Cartesian, cylindrical, and round recommendations that may be utilized to Maxwell's and Wave Equations. The booklet covers subject matters akin to SCADA structures, protective, and complexities of radio frequencies and their influence on conversation homes. the writer additionally presents details for substitute industries to use the suggestions from the case stories and history content material to their very own professions.
- Presents a chain of over twenty real-world case stories concerning EMC in transportation and communications
- Covers strength line radiation, shadow results on subway automobiles, educate keep watch over structures, and side distortions
- Includes the OATS trying out technique and division of Transportation (DOT) test
- Provides entry to a better half web site housing energy element slides and extra appendices
Electromagnetic Compatibility: research and Case stories in Transportation is a reference for working towards engineers considering transportation and communications, in addition to post-graduate engineering scholars learning transportation and communications in engineering.
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Extra resources for Electromagnetic compatibility: analysis and case studies in transportation
Measurements for radi ated emission are taken at least at 45° increments for either turntable or moving the antenna. A set of measurements are taken at various antenna heights. If deep nulls or peaks are noted during a measurement, ground reflections are occurring. The antenna height should be adjusted for each set of measurements; this will be based on the emission frequency. For heights that produce reflections, the reflected wave and the line of site wave will result in deep nulls or peaks that can result in large errors.
When dealing with power lines, it is necessary to place an attenuator between the measurement device and the LISN instrument port. Transients on power lines in particular transportation applications can be destructive to the instrument. The harsh environment from arcing of catenaries and the third hot rail can also be very destructive to other circuits. The tests are conducted on a ground plane with LISN bonded to it. 6. The AC mains should have line filters or isolations transformers and not inject noise into the measurements.
For a test facility to be certified by the FCC is rather costly (US $ 30 000–40 000. Manufacturing of equipment or devices depending on size, production runs and skilled personnel will determine whether the outlay of the cost is beneficial or not. Private FCC cer tified laboratories are the best alternative to designing and getting FCC certification. Underwriters Laboratory (UL) has a large facility that can test large or small devices or equipment, even aircraft. There are many others that may be better suited for small‐scale tests.