Improved Efficiency of Magnetic Field Contactless Power Transfer using Relay Circuit with Resonant Frequency Different from Power Supply Frequency
論文No: ページ数: 8 日付: 2024/07/01
著者: 伊藤 将（千葉工業大学大学院工学研究科電気電子工学専攻），相知 政司（千葉工業大学工学部電気電子工学科）
キーワード : 磁界結合型非接触給電，共振回路，センサネットワーク magnetic field coupling type contactless power supply，resonant circuit，sensor network
In this study, a relay resonance circuit is used transmitted power to the sensor module using four-parallel cubic coils, and the efficiency decrease with the change in the transmission distance is investigated experiment ... more
Calibration of the DC Resistance from 10MΩ to 10TΩ with Dual Source Bridge Type High Precision High Resistance Measuring Instrument
論文No: ページ数: 7 日付: 2024/07/01
著者: 征矢 隼人（長野県工業技術総合センター 精密・電子・航空技術部門／公立諏訪東京理科大学 工学部 情報応用工学科），大江 武彦（(国研)産業技術総合研究所 計量標準総合センター 物理計測標準研究部門），染谷 貴史（長野県工業技術総合センター 精密・電子・航空技術部門），金子 晋久（(国研)産業技術総合研究所 計量標準総合センター 物理計測標準研究部門）
キーワード : 高抵抗測定，直流電気抵抗器，直流抵抗標準 high resistance measurement，DC electric resistor，DC resistance standard
We investigated a measurement method using a dual source bridge type high-precision high-resistance measuring instrument ranging from 10MΩ to 10TΩ. All possible uncertainty components of the instrument were evaluated and ... more
We are developing a user-friendly tabletop NMR (Nuclear Magnetic Resonance) quantum computer for student labs. This device enables the observation of quantum behaviors of atomic nuclei and aims to demonstrate quantum alg ... more
The investigation of voids in concrete slabs is a crucial aspect of concrete diagnostics. We have reported that it is possible to efficiently detect the presence of voids by identifying the scattered waveform through an ... more
We investigated equivalent radii of penetration holes in insulating films in order to clarify that discharge diameter and gas temperature distribution shape of impulse arc discharge during penetrating insulating films. W ... more
It has been required to develop simulation of vacuum arcs as a tool to aid electrode design in vacuum circuit breakers. Although the development of electromagnetic thermo-fluid simulations for vacuum arcs has been report ... more
This paper describes the results of probe diagnostics in atmospheric pressure argon plasma jets (APJs) for the clarification of their internal structure. The probe is consisted with a fine stainless-steel wire and a resi ... more
The electrospray deposition (ESD) method is wet process used solution spray formed by electric field between the needle of solution contained syringe and conductive substrate or insulated electrode. In this study, we fab ... more
Sulfur hexafluoride (SF6) is a powerful insulating gas, yet its global warming potential (GWP) of 25,200 compels us to urgently seek eco-friendly alternatives. Various experiments and computations have been conducted to ... more
Providing electricity is quite important to sustain modern society. In order to realize high quality electricity reliability, sophisticated generator control is required so that stable frequency and voltage are maintaine ... more
The large-scale deployment of renewable energy requires a power system that can minimize operating costs while maintaining a stable supply. One way to reduce Variable Renewable Energy (VRE) suppression is to expand tie l ... more
In this study, disconnector switching surge was measured at electric-supply stations with different equipment types. Regarding the measured surge, differences of surge waveform characteristics between AIS (air insulated ... more
Effect of Configuration and Components of Hydrocarbon Production System with SOEC Co-Electrolysis on Efficiency
論文No: ページ数: 9 日付: 2024/07/01
著者: 小玉 智也（日本大学理工学部電気工学科），辻 健太郎（日本大学理工学部電気工学科），吉川 将洋（日本大学理工学部電気工学科）
キーワード : 固体酸化物形電解槽（SOEC），Power to Gas，共電解，炭化水素製造システム solid oxide electrolysis cell，power to gas，co-electrolysis，hydrocarbon production system
In recent years, Power to Gas, which converts surplus renewable energy into gaseous fuels for storage and utilization, has been attracting attention. One such Power to Gas project involves hydrocarbon production technolo ... more
We aim at engineering applications of reservoir computing using hardware chaotic neural networks, including associative memory recall. The reservoir layer used in reservoir computing is networked and constructed using Pu ... more
The sensation of drowsiness experienced around 2 PM, referred to as post-lunch dip (PLD), induces a decline in brain functions including attentiveness and levels of alertness. Such transient brain function declines insti ... more
Drivers show two types of stress-coping responses: active coping responses to stressful stimuli that they actively cope with and passive coping responses to stressful stimuli that they have no choice but to endure. Consi ... more
We developed an assist robot that changes its assist force in real time according to the lumbar load estimated from the load information on the hand measured using a hand sensor device and the posture information. Furthe ... more
Sleep apnea syndrome (SAS) is a disease that causes apnea during sleep, and since it correlates with lifestylerelated diseases, early detection and early treatment are important. Polysomnography (PSG) is generally used f ... more
In recent years, with the widespread adoption of remote work alongside traditional office work, the challenge of sharing the office atmosphere remotely has become evident. This difficulty has raised concerns about a lack ... more
There is a high demand for a safe and cost-effective method to inspect the tightness of bolts remotely, which are widely used in power plants. Since it is known that rigidity decreases of a structure due to bolt loosenin ... more
A Study on Personal Fit Control Design based on Extremum Seeking Approach
論文No: ページ数: 6 日付: 2024/07/01
著者: 槇野 泰大（広島大学大学院先進理工系科学研究科），宮腰 穂（広島大学大学院先進理工系科学研究科），脇谷 伸（広島大学大学院先進理工系科学研究科），山本 透（広島大学大学院先進理工系科学研究科），森重 智年（マツダ(株)），矢野 康英（マツダ(株)）
キーワード : ウェルビーイング，パーソナルフィット制御，極値探索制御，内部モデル制御 Well-being，personal fit control，extremum seeking control，internal model control
As WHO advocates well-being, people must be physically, mentally, and socially satisfied. Japan is aiming to realize well-being under a policy called Society 5.0. In this background, this study proposes a basic design sc ... more
The study considers a direct controller parameter design for regulatory control using one-shot experimental data contaminated with random disturbances. The proposed approach employs an idea of reference model matching, a ... more
This study considers data-driven controller parameter tuning for nonlinear systems using one-shot input-output data. The study addresses the model reference problem for a nonlinear system described by the parametric stri ... more
This paper proposes a bilateral control with a tension control considering joint torque for a tendon-driven robotic hand. This robotic hand has two joints and two degrees-of-freedom, which is driven by three tendons. Ten ... more
In geological surveys, a borehole camera is used to photograph the vertical cylindrical borehole-wall to investigate underground cracks. Currently, the identification of cracks from borehole-wall images is performed visu ... more
Performance Comparison of Semantic Segmentation Models and Loss Functions for Seat Belt Detection
論文No: ページ数: 7 日付: 2024/07/01
著者: Junya Sato (Faculty of Engineering, Gifu University), Takuya Akashi (Faculty of Science and Engineering, Iwate University)
キーワード : seat belt detection，semantic segmentation，convolutional neural network，deep learning
In Japan, despite seat belts being mandatory for drivers, some choose not to comply. This non-compliance is typically identified through visual inspections by police officers. However, Japan's population decline has faci ... more
Hypertension is a risk factor for cardiac and cerebrovascular disorders, and routine blood pressure monitoring is important for its early detection. The previous study that attempted to detect hypertension by applying CN ... more
Nicotiana Benthamiana, a candidate plant for plant-derived vaccines, is considered suitable for cultivation in a multi-stage plant factory. To increase area efficiency, we investigated the possibility of growing Nicotian ... more
Cattle blood tests are used for feed adjustment and early detection of disease. Conventional cattle blood tests pose infection risks and handling challenges. This paper proposes estimating blood glucose levels in cattle ... more
We propose an eye-gaze input system that utilizes a laptop PC and its inner camera. This system can discriminate the user’s eye-gaze direction by using Convolutional Neural Network (CNN) or Vision Transformer (ViT). In t ... more
