Optimal Design and Experimental Assessment of a Wireless Power Transfer System for Home-Cage Monitoring

Chow, Jeff Po-Wa; Chung, Henry Shu-Hung; Chan, Leanne Lai Hang; Shen, Ruihua; Tang, Sheng

doi:10.1109/tpel.2019.2894182

Cited by 16 publications

(9 citation statements)

References 42 publications

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“…As Figure 2 illustrates, a 2-layer coil was used to generate a homogeneous MF selected in this study. A newly launched coil [44] that could generate a stable and homogeneous MF inside the coil inside was adopted in this study. The simulation result of the MF distribution of the loop was performed using HFSS 16.1 (ANSYS, Canonsburg, PA, USA), as shown in Figure 3.…”

Section: Emf Exposurementioning

confidence: 99%

Indication of Electromagnetic Field Exposure via RBF-SVM Using Time-Series Features of Zebrafish Locomotion

Tsang

Kong

et al. 2020

Sensors

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This paper introduces a novel model based on support vector machine with radial basis function kernel (RBF-SVM) using time-series features of zebrafish (Danio rerio) locomotion exposed to different electromagnetic fields (EMFs) to indicate the corresponding EMF exposure. A group of 14 adult zebrafish was randomly divided into two groups, 7 in each group; the fish of each group have the novel tank test under a sham or real magnetic exposure of 6.78 MHz and about 1 A/m. Their locomotion in the tests was videotaped to convert into the x, y coordinate time-series of the trajectories for reforming time-series matrices according to different time-series lengths. The time-series features of zebrafish locomotion were calculated by the comparative time-series analyzing framework highly comparative time-series analysis (HCTSA), and a limited number of the time-series features that were most relevant to the EMF exposure conditions were selected using the minimum redundancy maximum relevance (mRMR) algorithm for RBF-SVM classification training. Before this, ambient environmental parameters (AEPs) had little effect on the locomotion performance of zebrafish processed by the empirical method, which had been quantitatively verified by regression using another group of 14 adult zebrafish. The results have demonstrated that the purposed model is capable of accurately indicating different EMF exposures. All classification accuracies can be 100%, and the classification precision of several classifiers based on specific parameters and feature sets with specific dimensions can reach higher than 95%. The speculative reason for this result is that the specified EMF has affected the zebrafish neural aspect, which is then reflected in their behaviors. The outcomes of this study have provided a new indication model for EMF exposures and provided a reference for the investigation of the impact of EMF exposure.

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Section: Emf Exposurementioning

confidence: 99%

Indication of Electromagnetic Field Exposure via RBF-SVM Using Time-Series Features of Zebrafish Locomotion

Tsang

Kong

et al. 2020

Sensors

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“…However, the following examples of the wirelessly-powered cage systems with such configuration also suffer from other limitations, which we will discuss in detail [18,[28][29][30]. Figure 15a,b show two wirelessly-powered cage designs, each of which a large Tx coil wraps around the cage to enhance the magnetic field within the volume covered by the Tx coil [28,29]. In Figure 15a, the Tx coil comprises two series-connected coaxial rectangular windings, generating an effective operating zone of 40 × 24 × 4 (height) cm [28].…”

Section: Wirelessly-powered Cage Systems With Single Tx Coil Configurmentioning

confidence: 99%

“…Figure 15a,b show two wirelessly-powered cage designs, each of which a large Tx coil wraps around the cage to enhance the magnetic field within the volume covered by the Tx coil [28,29]. In Figure 15a, the Tx coil comprises two series-connected coaxial rectangular windings, generating an effective operating zone of 40 × 24 × 4 (height) cm [28]. The center of such an operation zone is 7 cm height from the bottom of the cage to cover the vertical movement of the mobile device while the animal is walking and standing.…”

Section: Wirelessly-powered Cage Systems With Single Tx Coil Configurmentioning

confidence: 99%

“…The single Tx coil configuration can simplify the design of the driver control in the wirelessly-powered cage systems, significantly improving the system robustness. However, the following examples of the wirelessly-powered cage systems with such configuration also suffer from other limitations, which we will discuss in detail [18,[28][29][30]. Figure 15a,b show two wirelessly-powered cage designs, each of which a large Tx coil wraps around the cage to enhance the magnetic field within the volume covered by the Tx coil [28,29].…”

Section: Wirelessly-powered Cage Systems With Single Tx Coil Configurmentioning

confidence: 99%

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Wirelessly-Powered Cage Designs for Supporting Long-Term Experiments on Small Freely Behaving Animals in a Large Experimental Arena

Lee

Jia

2020

Electronics

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In modern implantable medical devices (IMDs), wireless power transmission (WPT) between inside and outside of the animal body is essential to power the IMD. Unlike conventional WPT, which transmits the wireless power only between fixed Tx and Rx coils, the wirelessly-powered cage system can wirelessly power the IMD implanted in a small animal subject while the animal freely moves inside the cage during the experiment. A few wirelessly-powered cage systems have been developed to either directly power the IMD or recharge batteries during the experiment. Since these systems adapted different power carrier frequencies, coil configurations, subject tracking techniques, and wireless powered area, it is important for designers to select suitable wirelessly-powered cage designs, considering the practical limitations in wirelessly powering the IMD, such as power transfer efficiency (PTE), power delivered to load (PDL), closed-loop power control (CLPC), scalability, spatial/angular misalignment, near-field data telemetry, and safety issues against various perturbations during the longitudinal animal experiment. In this article, we review the trend of state-of-the-art wirelessly-powered cage designs and practical considerations of relevant technologies for various IMD applications.

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“…Wireless power transfer (WPT) system has attracted more and more attentions in recent years, which is developed to deliver power to electrical equipment in different areas, contactlessly. There are two different types of WPT systems: one is capacitive wireless power transfer (CWPT) system [1]- [3], the other is the inductive wireless power transfer (IPT) system [4]- [7]. IPT system transfers the power wirelessly by adapting magnetic field with the inductive coils.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Undersea Capacitive Wireless Power Transfer System

Yang

Zhang

2019

IEEE Access

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This paper proposes a bidirectional undersea capacitive wireless power transfer system (BD-UCWPT) for the autonomous underwater vehicles (AUVs). The two H-Bridge circuits are adapted in the proposed BD-UCWPT system to achieve the bidirectional power flow. The H-Bridge circuit is built based on the GaN devices. As a result, the high switching frequency, and low power loss could be reached. The two LCLC compensation networks are respectively used in the transmitter side and receiver side. The simulation work is conducted with the Ansys Maxwell, PSIM and MATLAB. In the experiments, two seawater bags are added in the middle of two metal plates of C S1 and C S2 to model the seawater condition, respectively. In order to verify the theory analysis, a 100W experimental BD-UCWPT system is constructed. The experiments have been conducted in air and in seawater, respectively. The simulated and experimental results are compared with each other. It shows that, with this BD-UCWPT system, the power of AUVs could flow bidirectionally. The stable operation and high efficiency of BD-UCWPT system is verified. The research work in this paper could facilitate the application of wireless power transfer (WPT) system for AUVs and other undersea devices. INDEX TERMS Wireless power transfer system, bidirectional, undersea, autonomous underwater vehicles (AUVs).

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Optimal Design and Experimental Assessment of a Wireless Power Transfer System for Home-Cage Monitoring

Cited by 16 publications

References 42 publications

Indication of Electromagnetic Field Exposure via RBF-SVM Using Time-Series Features of Zebrafish Locomotion

Indication of Electromagnetic Field Exposure via RBF-SVM Using Time-Series Features of Zebrafish Locomotion

Wirelessly-Powered Cage Designs for Supporting Long-Term Experiments on Small Freely Behaving Animals in a Large Experimental Arena

Bidirectional Undersea Capacitive Wireless Power Transfer System

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