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lec01_intro - https/engineering.purdue.edu/ME365 ME 365...

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ME 365 Measurement Systems Nan Bai School of Mechanical Engineering Purdue University Office: ME 2208 Phone: 494 3279 [email protected] https://engineering.purdue.edu/ME365/
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Introduction “What ever exists, exists in some amount.” Understanding of physical world Verify design and/or theory Diagnostics ( Performance monitoring) Control
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Measurement System Process, Machine or System Measurement System Output Input True Value Measured Value Observer Accurate and Reliable
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Building Blocks Signal Conditioning Element Signal Processing Element Data Acquisition Element Data Presentation Element Sensing Element (Transducer) Input True Value In contact with the process; Output depends on the variable to be measured; Can have multiple stages. Thermocouple Strain Gage Modify signal into form usable by the final stage, e.g. amplification, modulation etc. Bridge Circuit Filters Convert signal into forms suitable for presentation.
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