| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Outline of Final Research Achievements |
We developed a device that measured a flow velocity in a water channel by an acceleration sensor built in a smartphone, utilizing a property that an obstacle immersed in a flow vibrates with frequencies proportional to flow velocities. We found that a small flat plate as an obstacle with a width, height and thickness of 18, 54 and 1mm, respectively, had the proportional relationship under flow velocities between 0.3 and 1 m/s. We also made an application that adopted the maximum entropy method as a fast Fourier transform showing quick response．We tested our prototype device in an actual water channel and found that the errors compared with outputs of electromagnetic flow meter were within 10%.
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