A Novel Wireless Energy Saving and Reliable Angular Accelerometer on Engineering Polyimide with Xenon Gas Filled in Chamber

Four novel ideas are proposed in this paper to integrate an active RFID tag with thermal convection angular accelerometer on an engineering plastic substrate, thus the device is a wireless sensor. The first innovative idea is that this device is without any movable parts, so it is very reliable. The second new idea is that it is made on an engineering plastic substrate, such as polyimide, the thermal conductivity is much lower than silicon, so it can save more power and very useful for mobile operation. The third new idea is that the xenon gas is applied in the chamber for heat convection instead of CO2 used in the traditional thermal convection accelerometer. Carbon dioxide can produce oxidation effect to the heater and thermal sensors, while the inert gas xenon will not. The fourth new idea is the most powerful one to integrate with an active RFID tag on the same substrate, thus it is very useful for mobile operation, and is very easy for usage and fabrication. If one considers sensitivity as the first priority, then choose the floating structure (233°C/(rad/s2)). On the other hand, if the response speed is the requirement, then the non-floating structure is better (70μs).

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A Novel Wireless Thermal Convection Type Angular Accelerometer Integrated with an Active RFID-Tag

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.284-287.2005 ◽

2013 ◽

Vol 284-287 ◽

pp. 2005-2008 ◽

Cited By ~ 2

Author(s):

Jium Ming Lin ◽

Kuo Hsiung Cho ◽

Cheng Hung Lin ◽

Hung Han Lu

Keyword(s):

Thermal Convection ◽

Response Times ◽

Flexible Substrate ◽

Wireless Sensor ◽

Rfid Tag ◽

Active Rfid ◽

Angular Accelerometer ◽

Innovative Idea ◽

Carbon Dioxide Co2 ◽

Oxidation Effect

Five novel ideas are proposed in this paper to integrate an active RFID tag with thermal convection angular accelerometer on a flexible substrate, thus the device is a wireless sensor. The first innovative idea is that this device is without any movable parts, so it is very reliable. The second new idea is that it is made on a flexible substrate, such as plastic or polyimide, thus it can save more power. The third new idea is that the xenon gas is applied in the chamber to conduct the heat instead of the traditional Carbon dioxide. CO2 can produce oxidation effect to the heater and thermal sensors, while the xenon not. The fourth new idea is to apply a hemi-spherical chamber; it is more streamline in nature with less drag effect to ease the fluid flow and yield quicker response. The fifth new idea and the most powerful one is that the angular accelerometer is integrated with an active RFID tag on the same flexible substrate, thus the device becomes a more useful wireless sensor. Note the linearity, sensitivity, and response times of step-input angular accelerations are better for the hemi-spherical chamber filled with Xe gas. The sensitivity is 71.4°C/(rad/s2) and the response time is 60μs.

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An Innovative and Reliable Wireless Angular Accelerometer Made Directly on a Flexible Substrate without Moving Parts

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.764-765.1293 ◽

2015 ◽

Vol 764-765 ◽

pp. 1293-1297

Author(s):

Jium Ming Lin ◽

Cheng Hung Lin ◽

Chia Hsien Lin

Keyword(s):

Flexible Substrate ◽

Angular Acceleration ◽

Response Speed ◽

No Oxidation ◽

Rfid Tag ◽

Active Rfid ◽

New Device ◽

Angular Accelerometer ◽

And Performance ◽

Floating Type

Five novel ideas are proposed in this paper to integrate an active RFID tag with a thermal convection angular accelerometer on a flexible substrate, thus the new device becomes a wireless sensor. The first innovative idea is that this device is without any movable parts, so it is very reliable. The second new idea is that it is made on a flexible substrate, such as plastic or polyimide, the thermal conductivity of the flexible substrate is much lower than silicon, and thus it can save more power and very useful for mobile operation. The third new idea is to apply xenon gas in the chamber to conduct the heat instead of the traditional carbon dioxide, so no oxidation and performance degradation effects will be produced on the heater and thermal sensors. The fourth new idea is to integrate with an active RFID tag on the same substrate, thus the device becomes a more useful wireless angular acceleration sensor. The final new idea is to apply a hemispherical chamber instead of the conventional rectangular one. From the simulation results one can see it is a good idea to apply a non-floating type angular accelerometer with a hemispherical chamber, the sensitivity performance is the best (395K/(rad/sec2)), and the response speed (693μs) is also comparable to the traditional one by using a floating type with a rectangular chamber (593μs). In summary, from the considerations of reliability, cost and performance, the non-floating type angular accelerometer with hemispherical chamber is a better choice.

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A Novel Thermal Convection Angular Accelerometer and Integrated with RFID Tag on a Flexible Substrate

Advanced Science Letters ◽

10.1166/asl.2013.4468 ◽

2013 ◽

Vol 19 (5) ◽

pp. 1239-1243

Author(s):

Jium-Ming Lin ◽

Wen-Chen Luo ◽

Cheng-Hung Lin ◽

Hung-Han Lu

Keyword(s):

Thermal Convection ◽

Flexible Substrate ◽

Rfid Tag ◽

Angular Accelerometer

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A Novel RFID-Based Thermal Convection Accelerometer with Heater and Thermal Piles Deposited by E-Gun Focused on Mixing Powders of Metals

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.364.262 ◽

2013 ◽

Vol 364 ◽

pp. 262-266

Author(s):

Jium Ming Lin ◽

Cheng Hung Lin

Keyword(s):

Thermal Convection ◽

Room Temperature ◽

Flexible Substrate ◽

Cold Region ◽

Rfid Tag ◽

Active Rfid ◽

New Device ◽

Polyimide Substrate ◽

Power Leakage ◽

Rectangular Chamber

This paper proposes an innovated method to integrate an active RFID tag with a thermal convection accelerometer with heater and thermal piles deposited on a flexible substrate by E-gun, thus it is a wireless sensor for easy usage in many fields. The other advantages of the new device are as: (1) The thermal conductivity (λ148W/(mK)) of the traditional Si is about 25 times of the proposed polyimide substrate (λ6-0.17W/(mK)), thus the power leakage through the substrate is reduced. (2) The heaters and the thermal piles are deposited by E-gun focused on a target of mixing powders of metals on the flexible substrate, so it is different from the traditional ones by using the structures floating over a grooved cavity. Thus the new device is not only easy to make, but more reliable to operate in large acceleration impact condition without damage. (3) The thermal piles are divided into two portions respectively exposed to a cold region and a hot region. The cold junctions of thermal piles are put outside the cap to make it exactly at the room temperature, thus the device is very easy to calibrate and more accurate. (4) The chamber is filled with another kind of gas such as Xe or Ar to avoid the oxidizing effect produced by the commercial ones with carbon dioxide or air, and then the reliability as well as the life cycle of the heater can be increased. (5) By the results of simulation, one can see the traditional rectangular chamber can be replaced by a hemi-cylindrical one to extend both the operation range and sensitivity of the thermal convection accelerometer.

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Integrating Thermal Convection Non-Floating Type Inclinometer and RFID Tag

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.765-767.2333 ◽

2013 ◽

Vol 765-767 ◽

pp. 2333-2336

Author(s):

Jium Ming Lin ◽

Cheng Hung Lin

Keyword(s):

Thermal Convection ◽

Flexible Substrate ◽

Cylindrical Shape ◽

Floating Structure ◽

Rfid Tag ◽

Operating Range ◽

Sensitivity Curves ◽

New Ideas ◽

Floating Type ◽

Device Sensitivity

This research proposes a novel wireless RFID-based thermal convection type inclinometer design. Five new ideas are presented. The first one is to make the device on a flexible substrate, thus it can save more energy than the traditional silicon. The second one is to integrate both an inclinometer and a wireless RFID antenna on the same substrate, such that it is very convenient for usage. The third and the fourth ideas are to fill xenon gas in the chamber with hemi-cylindrical shape instead of the previous one with carbon dioxide and rectangular shape. Because the xenon gas would not produce oxidization effect to the heater, and it is more reliable. Besides, the xenon gas can increase the gas molecular weight and the device sensitivity. The fifth idea is to use non-floating structure instead of the floating one with a cavity in the substrate. Moreover, to increase the sensitivity the thermisters were stacked on one material such as alumina nitride. Note that the sensitivity curves by applying the non-floating structure with stacking material are more linear. Three kinds of stacking height were studied, such as 1, 1.5 and 2mm. One can see the combinations of AlN/Xenon are always better. If the largest sensitivity is the key consideration, then H2=1.5mm is the best choice (0.4°C/Degree), but the linear operating range is 45°. However, If the largest linear operating range is the requirement, then H2=2mm is the best one (75°), but the sensitivity is 0.173°C/Degree.

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A Novel Wireless Thermal Convection Type Inclinometer by Using Non-Floating Structure

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.595.243 ◽

2014 ◽

Vol 595 ◽

pp. 243-249

Author(s):

Jium Ming Lin ◽

Cheng Hung Lin

Keyword(s):

Response Time ◽

Thermal Convection ◽

Flexible Substrate ◽

Response Speed ◽

Cylindrical Shape ◽

Average Response ◽

Average Response Time ◽

Floating Structure ◽

New Ideas ◽

The One

This research proposes a novel wireless RFID-based thermal convection type inclinometer by using non-floating structure without a cavity in the substrate. Four new ideas are presented. The first one is to make the device on a flexible substrate, thus it can save more energy than the traditional silicon. The second one is to integrate both an inclinometer and a wireless RFID antenna on the same substrate, such that it is a wireless device and very convenient for usage. The third idea is to fill xenon gas in the chamber with hemi-spherical or hemi-cylindrical shape instead of the previous one with carbon dioxide and rectangular shape. Because the xenon gas would not produce oxidization effect to the heater, so it would be more reliable. The fourth idea is to use non-floating structure instead of the floating one. The results by using floating structure with xenon and CO2 gases are studied the first; but the sensitivity performances are not good. Note that the sensitivities for the proposed non-floating structure by using hemi-spherical chamber filled with xenon and CO2 gases are better, and the one of the former is better than the latter by 70%. On the other hand, the response speed (step-input of tilted angle) by using hemi-cylindrical chamber with xenon gas is the quickest, the average response time is 545μs, while the hemi-spherical chamber filled with CO2 is the slowest, and the average response time is 748μs.

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A Novel Remote Health Monitor with Replaceable Non-Fragile Bio-Probes on RFID Tag

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.145.415 ◽

2011 ◽

Vol 145 ◽

pp. 415-419

Author(s):

Jium Ming Lin ◽

Po Kuang Chang

Keyword(s):

Human Health ◽

Human Body ◽

Impedance Matching ◽

Plastic Substrate ◽

Large Area ◽

Matching Problems ◽

Rfid Tag ◽

Active Rfid ◽

Degradable Polymer ◽

Health Monitor

Conventional bio-probes are produced on a silicon substrate, they are not only fragile but unable to dispose according to the profile of human body in a large area manner, and thus the contact resistance between probe and skin may be increased. Besides, the signal processing devices are required to improve both S/N ratio and impedance matching problems. This paper proposes a novel remote human health monitor and an active RFID tag with replaceable non-frangible probes and thin-film-transistor (TFT) amplifiers. The probes are made of bio-degradable polymer (photo resist) and covered with bio-compatible TiN. In addition, we use two pieces of double sides conducting tapes to connect both TFT amplifiers and probe modules. Thus the probe module can be replaced easily by peeling the used probe module away from the double sides conducting tapes to supply a new one. Since the tag is a flexible plastic substrate, e, g. PT, PET and PI, so the probes are easier to deploy and conform to the human body profile. In addition, the signal can be amplified by the TFT amplifier nearby to improve both S/N ratio and impedance matching. Thus the human health conditions can be remotely monitored by measuring various acupuncture impedances via the active RFID tag. The active RFID monitoring range is 15m by using 2.45 GHz ISM band, the probe resistance and parasitic capacitance are as 2735 Ω and 60.7 pf, respectively. Since the typical human acupuncture point resistance is about 40-120KΩ, thus the proposed device and system can be applied.

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A Novel RFID-Based Thermal Convection Inclinometer on Flexible Substrate without Grooved Structure

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.530-531.7 ◽

2014 ◽

Vol 530-531 ◽

pp. 7-14

Author(s):

Jium Ming Lin ◽

Cheng Hung Lin ◽

Chia Hsien Lin

Keyword(s):

Response Time ◽

Thermal Convection ◽

Flexible Substrate ◽

Response Speed ◽

Cylindrical Shape ◽

Average Response ◽

Average Response Time ◽

Floating Structure ◽

Rectangular Chamber ◽

The One

This research proposes a novel wireless RFID-based thermal convection type inclinometer by using non-floating structure without a cavity in the substrate. Four new ideas are presented. The first one is to make the device on a flexible substrate, thus it can save more energy than the traditional silicon. The second one is to integrate both an inclinometer and a wireless RFID antenna on the same substrate, such that it is a wireless device and very convenient for usage. The third idea is to fill xenon gas in the chamber with hemi-spherical or hemi-cylindrical shape instead of the previous one with carbon dioxide and rectangular shape. Because the xenon gas would not produce oxidization effect to the heater, so it would be more reliable. The fourth idea is to use non-floating structure instead of the floating one. The results by using floating structure with xenon and CO2gases are studied the first; but the sensitivity performances are not good. Note that the sensitivities for the proposed non-floating structure by using hemi-spherical chamber filled with xenon and CO2gases are better, and the one of the former is better than the latter by 70 %. On the other hand, the response speed (step-input of tilted angle) by using hemi-cylindrical chamber with xenon gas is the quickest, the average response time is 545μs, while the rectangular chamber filled with CO2is the slowest, and the average response time is 848μs.

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