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孫鵬 (Peng Sun)
孫鵬 (Peng Sun)
Development of Reversible, Wireless and Passive Tilt Recorder using Ferrofluid
Development of Reversible, Wireless and Passive Tilt Recorder using Ferrofluid
磁流體式之無線被動可回復傾倒開關的研發
磁流體式之無線被動可回復傾倒開關的研發
Logistics process storage methods directly affect the quality of the goods. For avoid this condition that prevent and reduce the risk of damage during transport. Then tilt sensor has been developed. You can simply indicate the cargo whether the goods had been tilted during transportation or warehousing. Wireless sensor measurement functions can be placed in harsh environment monitoring or unsuitable wiring occasions. Passive sensors can reach energy savings. In order to promote product reliability and testability then additional products reversible function.
Logistics process storage methods directly affect the quality of the goods. For avoid this condition that prevent and reduce the risk of damage during transport. Then tilt sensor has been developed. You can simply indicate the cargo whether the goods had been tilted during transportation or warehousing. Wireless sensor measurement functions can be placed in harsh environment monitoring or unsuitable wiring occasions. Passive sensors can reach energy savings. In order to promote product reliability and testability then additional products reversible function.
This thesis focuses on Development of Reversible, wireless and Passive Tilt recorder. When the tilt recorder tilts. Its liquid-type proof mass sensing gravity acceleration's direction has been changed and inertia to move. When sensing magnetic fluid inertial mobile forces bigger than the design of the acceleration threshold, tilt recorder is open. In order to make the tilt recorder be open stability possessed record function. In the tilt recorder is open of the area to do a deep grooves. After the tilt recorder to open, the magnetic fluid fall into deep grooves and will not be reverse acceleration effect to reply by itself. Through the design of the LC circuit. Due to the liquid droplet in different areas would cause the dielectric constant been changed, and resonance frequency is changed, too. Then wireless passive sweep tilt recorder, would know the current switching state, reach wireless passive measurement functions. After the tilt recorder is open, use magnetic pulling sensing magnetic fluid back to initial chamber with the magnet, reach passive reversible function.
This thesis focuses on Development of Reversible, wireless and Passive Tilt recorder. When the tilt recorder tilts. Its liquid-type proof mass sensing gravity acceleration's direction has been changed and inertia to move. When sensing magnetic fluid inertial mobile forces bigger than the design of the acceleration threshold, tilt recorder is open. In order to make the tilt recorder be open stability possessed record function. In the tilt recorder is open of the area to do a deep grooves. After the tilt recorder to open, the magnetic fluid fall into deep grooves and will not be reverse acceleration effect to reply by itself. Through the design of the LC circuit. Due to the liquid droplet in different areas would cause the dielectric constant been changed, and resonance frequency is changed, too. Then wireless passive sweep tilt recorder, would know the current switching state, reach wireless passive measurement functions. After the tilt recorder is open, use magnetic pulling sensing magnetic fluid back to initial chamber with the magnet, reach passive reversible function.
The prototype of the tilt recorder is made by 3D printer technology. The results are divided into three parts. First, tilt recorder function. Initial the tilt recorder will be made to Full-hydrophobic design, but the structure has many blind spots. For example: The magnetic fluid will occur partial pass-through phenomenon, and acceleration threshold is different when partial pass-through be occurrence, and in the resonance frequency difference is small(50 kHz), hard to determine. Then improve Full-hydrophobic design into Half-hydrophobic design. Half-hydrophobic design would not occur partial pass-through phenomena, and the droplet size of 110 μL of tilt recorder reuse that acceleration threshold remained at 0.9G following, high reliability, good reproducibility. Acceleration threshold: 0.739 g - 0.849 g. Second, reversible function. Magnetic sensing fluid is bad to cohesion, and the contact surface of the hydrophobic poor. Need to be diluted by the water that near to nature of water and take into account magnetic to reply. Dilution ratio(MF: H2O): 1 : 10 (9.09%). In addition, wireless and passive measure. Tilt recorder that the resonant frequency reuse for performance is no increment or attenuation phenomenon, high reliability, good reproducibility. The resonance frequency before tilt for estimated(for 110 μL): 151.964 kHz, due to signal strength is poor and is overshadowed by the noise, therefore, it is a estimate value; The resonance frequency after tilt for real(for 110 μL): 10.05 MHz - 10.10 MHz.
The prototype of the tilt recorder is made by 3D printer technology. The results are divided into three parts. First, tilt recorder function. Initial the tilt recorder will be made to Full-hydrophobic design, but the structure has many blind spots. For example: The magnetic fluid will occur partial pass-through phenomenon, and acceleration threshold is different when partial pass-through be occurrence, and in the resonance frequency difference is small(50 kHz), hard to determine. Then improve Full-hydrophobic design into Half-hydrophobic design. Half-hydrophobic design would not occur partial pass-through phenomena, and the droplet size of 110 μL of tilt recorder reuse that acceleration threshold remained at 0.9G following, high reliability, good reproducibility. Acceleration threshold: 0.739 g - 0.849 g. Second, reversible function. Magnetic sensing fluid is bad to cohesion, and the contact surface of the hydrophobic poor. Need to be diluted by the water that near to nature of water and take into account magnetic to reply. Dilution ratio(MF: H2O): 1 : 10 (9.09%). In addition, wireless and passive measure. Tilt recorder that the resonant frequency reuse for performance is no increment or attenuation phenomenon, high reliability, good reproducibility. The resonance frequency before tilt for estimated(for 110 μL): 151.964 kHz, due to signal strength is poor and is overshadowed by the noise, therefore, it is a estimate value; The resonance frequency after tilt for real(for 110 μL): 10.05 MHz - 10.10 MHz.
Journal papers
Journal papers
1. C.-Y. Huang, P. Sun, M.-S. Lee, S.-Y. Wu, Y.-C. Shieh, W. Hsu, "A resettable, wireless and passive fall-down recorder using a magnetic droplet with an LC circuit," IEEE Sensors Journal 2016, 16, 654-661. (IF=1.762, N/M=77/249)
1. C.-Y. Huang, P. Sun, M.-S. Lee, S.-Y. Wu, Y.-C. Shieh, W. Hsu, "A resettable, wireless and passive fall-down recorder using a magnetic droplet with an LC circuit," IEEE Sensors Journal 2016, 16, 654-661. (IF=1.762, N/M=77/249)
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