An Article on the EMC Problem in Australia

An Article on the EMC Problem in Australia

Document details
Category: Environment Essay
Subcategory: Environmental Earth Science
Words: 977
Pages: 2

Purpose The purpose of this article is to discuss the EMC problem and to briefly illustrate its relevance in the development, manufacturing and sale of commercial escalator components in Australia. The intent audiences of this report are engineers and managers from WTM, an escalator development company planning on entering the Australian market. The Problem Electromagnetic interference or EMI caused by radiation has been a known problem ever since the very earlier days of the electronic age. In some cases, electromagnetic interference can cause severe conflicts between electronic devices operating in the same environment. Today, with the rapid spread of electrical and electronic devices, electromagnetic compatibility (EMC) has become a subject gathering ever increasing interests and attention. Electromagnetic compatibility is known as the discipline of designing, analysing and testing of electronic equipment, to ensure that they are compatible with their electromagnetic environment. By conforming to the EMC regulations in the design stage, we reduce the potential of discovering design problem after the design has left the development laboratory. The definition of EMC can also be described using the terms EMI and EMS. MES is electromagnetic susceptibility or immunity. Thus, a electronic device must have an EMI emission below that of the defined maximum limit and must remain in fault-free operation with interference below the EMS limit. In a carefully controlled environment, such as in an airliner, passengers can be kept from using equipment which might cause interference with the airliners navigational and communication system. But this is not a realistic solution for an escalator system. The use of some electronic equipment in the close proximity of the elevator is inevitable and necessary. Hence, the main problem facing all elevator equipment developers is the need for sufficient equipment and component shielding thus preventing unwanted electromagnetic frequencies from entering or exiting devices and interfering with other control circuitry. This limits the unwanted electromagnetic radiation and ensures that components will continue to...

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