Development of smart gear system by conductive-ink print (impedance variation of a gear sensor with loads and data transmission from an antenna)

Iba, Daisuke; Futagawa, Shintaro; Miura, Naruhisa; Iizuka, Takashi; Masuda, Arata; Sone, Akira; Moriwaki, Ichiro

doi:10.1117/12.2515339

Cited by 4 publications

(8 citation statements)

References 1 publication

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“…Fundamentally, the experimental configuration of this research is set in accordance with the results of [12]. The experimental results obtained by [12] demonstrated that the physical conditions of the sensor track circuit on the smart gear side had a remarkable effect on the magnetic coupling between this sensor track circuit and the antenna circuit of the monitoring antenna. Moreover, according to the Sect.…”

Section: The Smart Gear System and Modelsmentioning

confidence: 82%

“…One of our previous experimental works indicated that the coupling between the monitoring antenna and an uncracked sensor track circuit results in resonant return loss data that has numerous minor peaks on its chart instead of a smooth shape. The smooth shape of the mentioned resonant return loss data can be referred to from [12] with two smooth resonant peaks at the vicinity of 0.3 [GHz]. Apparently, the appearance of these minor peaks can take long time and effort of the data picking-up step in this research since the proposed method required picking up arbitrary points from the experimental data of the resonant return loss of the monitoring antenna.…”

Section: The Smart Gear System and Modelsmentioning

confidence: 99%

“…( 10), studies by [15] and [16] proposed that the inductance L 1 of a spiral coil of an antenna can be estimated based on the following Eqs. ( 11) and (12). Since the coil of the 1st antenna in this research is a spiral coil, the Eqs.…”

Section: Determining the Unknown Parametersmentioning

confidence: 99%

“…Our empirical work has proven that the change in the physical condition of the sensor track circuit results in the corresponding change of the magnetic coupling that can be observed via the resonant return loss of the monitoring antenna. Specifically, [12] specified that the conductive states of the sensor such as uncracked-healthy or cracked-unhealthy are related to the change of the resonant return loss shape of the monitoring antenna.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, although the founding of [12] revealed that the observation of the return loss shapes of the monitoring antenna can indicate the physical conditions of the smart gear, the characteristic values of the conductive sensor track circuit of the smart gear remain unknown. With a motivation to identify the characteristic information of the sensor track circuit of the smart gear wirelessly, this research proposes a method called the "characteristic parameter identification method. "…”

Section: Introductionmentioning

confidence: 99%

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Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna

et al. 2022

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A wireless smart gear system has been being developed as a gear health monitoring system. This system works based on the magnetic coupling between its two major elements consisting of a monitoring antenna and a smart gear. In operation, the smart gear works as a working gear in the power transmission system while the monitoring antenna monitors this gear continuously. Specifically, since the monitoring antenna is fixed and kept connecting to a network analyzer during the gear operation, it allows the magnetic coupling to occur and remain thoroughly. As a result, the return loss signal of the monitoring antenna becomes a resonant return loss data of the smart gear system. In this paper, the authors propose a method to use this resonant return loss signal for identifying two parameters called the $$Q$$ Q value and the angular frequency of the smart gear side antenna. There are three cases of magnetic coupling that have been considered. These cases are called Open, Short, and Loaded by a 50 [Ω] resistor where the characteristics of the antenna on the smart gear side are changed via its connector by leaving Open or connecting to a Short and a 50 [Ω] resistor modules, respectively. The results indicate that the method is effective for parameter identification of the $$Q$$ Q value and the angular frequency of the smart gear side antenna for all three cases. Moreover, the analysis of the validated $$Q$$ Q value and the angular frequency also indicates the relation between these two characteristic values and the practical conditions of the smart gear. This finding consolidates the effectiveness of our developing wireless smart gear system. Article Highlights This article proposes a parameter identification method for a developing smart gear health monitoring system. By only using the resonant return loss data obtained from the monitoring antenna, there are two characteristic values of the smart gear have been achieved. This article also introduces a completed return loss equation of a magnetically coupled system. This return loss equation is helpful for the computation of characteristic parameters of the magnetically coupled system such as a wireless power transfer system or a coupled antenna system. The results figure out that the identified characteristic parameters and the physical condition of the smart gear side’s antenna circuit are related to each other. This finding affirms the effectiveness of not only the proposed parameter identification method but also the developing smart gear system.

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Section: The Smart Gear System and Modelsmentioning

confidence: 82%

Section: The Smart Gear System and Modelsmentioning

confidence: 99%

Section: Determining the Unknown Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna

et al. 2022

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A Review of Smart Condition Monitoring System for Gearbox

Lamba

Singh

Ramkumar

2022

Lecture Notes in Mechanical Engineering

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Gear health monitoring using smart gears with printed sensor/antenna circuits by running tests

Fujita,

Iba,

Sakai

et al. 2024

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2024

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The Smart Gear System comprises two integral components: the Smart Gear, featuring a sensor and an antenna circuit intricately embedded onto the gear, and a monitoring antenna seamlessly linked to a network analyzer. The proximity of the smart gear antenna to the monitoring antenna induces magnetic coupling between the two antennae, consequently altering the frequency characteristics of the monitoring antenna. Additionally, minute deformations in the gear tooth root result in modifications to the sensor's shape on the gear, thereby causing alterations in the frequency characteristics of the sensor. The overall health status of the gear can be discerned on the monitoring antenna side by monitoring the frequency characteristic variations of the sensor, based on the fundamental principle of magnetic coupling during operational processes. In the context of this investigation, a dynamic evaluation of the Smart Gear System is executed, with the return loss of the monitoring antenna meticulously gauged at periodic intervals throughout the operational phase. This study delves into the correlation between the return loss exhibited by the monitoring antenna and the dynamic physical alterations in the Smart Gear during operation.

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Development of smart gear system by conductive-ink print (impedance variation of a gear sensor with loads and data transmission from an antenna)

Cited by 4 publications

References 1 publication

Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna

Identification of Q value and angular frequency of smart gear antenna using the resonant return loss of the receiving antenna

A Review of Smart Condition Monitoring System for Gearbox

Gear health monitoring using smart gears with printed sensor/antenna circuits by running tests

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