課程名稱︰感測器與致動器原理
課程性質︰工科系選修
課程教師︰鄭勝文
開課系所︰工科海洋
考試時間︰期末考週
試題 :In a chemical plant, in order to on-line monitoring the condition of
pipelines, a sensor module must be installed for measurement of
1.the average liquid flow velocity
2.the velocity of solid particles (duameter large than 1 cm ), and
3.the displacement amplitude of outer suface
Design an ultrasoundbase sensor module under following requirements.
1.velocity
range:0~100 cm/sec
resolution:less than 1 cm/sec
2.displacement amplitude
frequency:100Hz~500Hz
3.outer diameter of pipe:30cm
4.thickness of pipe shell:1 cm
5.material of pipelines:plain carbon stell
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