Vehicle Parking Guidance for Wireless Charge Using GMR Sensors

Huang, Chih‐Cheng; Lin, Chong; Kao, Jia-Jing; Chang, Jen‐Lin; Sheu, Geeng-Jen

doi:10.1109/tvt.2018.2827069

Cited by 20 publications

(11 citation statements)

References 13 publications

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“…A breakthrough towards the industrial application of the GMR devices was made by Parkin et al, who demonstrated the first Co/Cr and Co/Ru GMR multilayer structures through magnetron sputtering techniques [32]. Since then, many efforts have been made towards the commercialized application of GMR-based devices, such as biosensors [13,21,33], position sensors [7,34], and magnetic random access memory (MRAM) [35][36][37]. An example of the GMR stack structure is shown in Figure 2a.…”

Section: Giant Magnetoresistance (Gmr)mentioning

confidence: 99%

“…The capability of converting magnetic signals to electrical signals has led to the successful implementation of sensors based on the MR effect. To date, MR sensors have been widely employed in various applications such as hard disk drives [1], magnetic random access memory (MRAM) [2], pressure measurement [3,4], current sensing [5,6], position sensing [7][8][9], and biosensing [10][11][12] ( Figure 1). The first application of MR sensors to detect biological signals was proposed about 20 years ago by Baselt et al [13], and they have attracted great attention since then [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Advances in Magnetoresistive Biosensors

Saha

et al. 2019

Micromachines

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Magnetoresistance (MR) based biosensors are considered promising candidates for the detection of magnetic nanoparticles (MNPs) as biomarkers and the biomagnetic fields. MR biosensors have been widely used in the detection of proteins, DNAs, as well as the mapping of cardiovascular and brain signals. In this review, we firstly introduce three different MR devices from the fundamental perspectives, followed by the fabrication and surface modification of the MR sensors. The sensitivity of the MR sensors can be improved by optimizing the sensing geometry, engineering the magnetic bioassays on the sensor surface, and integrating the sensors with magnetic flux concentrators and microfluidic channels. Different kinds of MR-based bioassays are also introduced. Subsequently, the research on MR biosensors for the detection of protein biomarkers and genotyping is reviewed. As a more recent application, brain mapping based on MR sensors is summarized in a separate section with the discussion of both the potential benefits and challenges in this new field. Finally, the integration of MR biosensors with flexible substrates is reviewed, with the emphasis on the fabrication techniques to obtain highly shapeable devices while maintaining comparable performance to their rigid counterparts.

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Section: Giant Magnetoresistance (Gmr)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advances in Magnetoresistive Biosensors

Saha

et al. 2019

Micromachines

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“…For stationary charging of EVs' cost-effective parking assisting system are developed [24][25][26], which can be used to align the vehicles; thereby, M can be maintained approximately constant. Moreover, once a coil system is designed for a particular vehicle ground clearance, the distance variation of the coil system for that particular vehicle is due to change in air pressure in the wheels, which is less and M can be maintained approximately as constant.…”

Section: Analysis Of the Wpt System With Distance And Misalignment Vamentioning

confidence: 99%

“…Compared to the existing topologies, where more than one AC switches and communication link are used, here only one AC switch is used; thereby, component count is reduced and the communication link is avoided. It can be noted that inductive coil parameters are taken as fixed parameters and it can be easily achieved in practical situations with the help of vehicle alignment techniques [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable WPT system for load‐independent CC and CV output with transmitting‐side control

Ravikiran

Keshri

2020

IET Electric Power Applications

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This study proposes a reconfigurable wireless charging topology, which achieves load-independent constant current (CC) and constant voltage (CV) output without any communication link between transmitting and receiving coils. The proposed topology is suitable for CC-CV modes of battery charging. Inductor (L), capacitor (C) and inductor (L) connected as T type (LCL) compensation with an auxiliary capacitor on the transmitting side and series (S) compensation on the receiving side (LCL-S) is used to achieve load-independent CC and CV output. Reconfiguration has been achieved using single AC switch on transmitting side. Control has been implemented with the information on transmitting side. Load-independent CC and CV output operations have been analysed analytically. The merits of the proposed topology are fixed-frequency operation, simplified control scheme for load-independent CC-CV operation without any communication link. Feasibility of the proposed topology is verified by the experimental prototype with a CC output of 12 A and CV output of 56 V.

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“…There is a variety of sensors available in the category, such as Hall sensors, fluxgates or micro-fluxgates, anisotropic magnetoresistance (AMR), giant magnetoresistance (GMR), tunneling magnetoresistance (TMR), and giant magnetoimpedance (GMI) sensors. Of these devices, due to the micro-level dimension, excellent sensitivity, and CMOS compatibility, GMR sensors have attracted more consideration and interest for conventional applications such as detection of weak magnetic fields, angular velocity and acceleration, and inertia navigation and positioning; also for recently emerging applications like ultra-low pressure measurement [1], biological magnetic signals for gene expression analysis [2] and influenza virus detection [3], some novel technologies in water pollution detection [4] and wireless charging for electric vehicles (EVs) [5], and even current monitoring [6] for smart power grids, etc.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Static Current Measurement with Field-Modulated Spin-Valve GMR Sensors

Jeng

Trinh

Hung

et al. 2019

Sensors

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A non-contact current measurement device comprised of a GMR sensor and a ferrite ring core was investigated. The sensor chip employed a high-sensitivity spin-valve full-bridge GMR sensor of which the direct output has non-negligible hysteresis and a limited linear range. By applying an AC modulation current to modulate the output of the GMR sensor, the hysteresis was reduced, and the linear range was over ±0.5 A. The resolution for DC and quasi-static current measurement was 0.1 mA at a 10 Hz bandwidth. The output in proportion to the measured current was obtained either by demodulating the current-sensitive AC signal or by employing the filtered output of the intrinsically nonlinear spin-valve response. The proposed current sensing scheme is suitable for quasi-static current measurement from DC to over 100 Hz.

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Vehicle Parking Guidance for Wireless Charge Using GMR Sensors

Cited by 20 publications

References 13 publications

Advances in Magnetoresistive Biosensors

Advances in Magnetoresistive Biosensors

Reconfigurable WPT system for load‐independent CC and CV output with transmitting‐side control

Quasi-Static Current Measurement with Field-Modulated Spin-Valve GMR Sensors

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