Implementation of a multifunctional contactless bidirectional charging and discharging system with the aid giant magnetoresistance (GMR) effect for car parking guidance is proposed. Traditional Hall sensors can detect magnetic flux changes. However, if changes are not significant enough to induce detectable interference voltage, there will be error detection. To remedy, GMR sensor may tiny in field, which produce larger change resistance; this resistance less susceptible external noise...

For the research of wireless power transfer, loosely coupled inductive transfer (LCIPT) is one widely adopted technologies. There are already various researches focusing on development high-efficiency LCIPT. However, when transmission and receiver coils misaligned, efficiency will be significantly dropped. This article considers change mutual inductance two induction misaligned. A fuzzy control approach to solve for this problem by adaptively adjusting operational frequency introduced....

Wireless power transmission (WPT) systems have been increasingly utilized for wireless charging of electric vehicles. However, most research efforts or commercial products only address but not data communication. In addition, limitation the range is always a gap obstructing its popularity. Accordingly, this article presents novel WPT scheme incorporating both relay and magnetic field For transmission, resonant inverter with pulsewidth modulation was developed using coils to induce longer...

There are two novel techniques in the research of wireless power transfer (WPT), i.e. bidirectional WPT and data transmission. The allows vehicles to be charged provide charge other accepting objects; transmission system charging without any additional communication device. Both them sensitive induction coil alignment. Due misalignment between receiver coil, output will result a drop. problem affects efficiency significantly. This paper combines with transmission, constructs complete through...

It's a major drawback of the battery charging in traditional electric vehicles is that it relies on use plug-in device for charging. This research proposes wireless power and bidirectional data transmission scheme, related to status, vehicle identification number, or emergency messages can be mutually transmitted between two isolated units via an LC tank. The primary unit employs inverter yield alternating current flow load mutual inductance. secondary transfers by adjusting load, receives...

At present, the wireless charging and data transmission systems developed by major car manufacturers rely heavily on additional equipment.This paper presents a newly power bidirectional scheme without adding any radio frequency (RF) devices.The battery charge status vehicle related information can be transmitted bidirectionally in manner compensation capacitor between two isolated units.Based function, this system quickly inform user when an emergency event occurs during transmission.An...

Recently, inductive power transfer (IPT) system has been used for wireless charging of electric vehicles (EVs). However, most them only treat the issue single directional (WPT). This research proposes a novel bi-directional IPT (BD-IPT) scheme EVs, which can simultaneously transmit power/data via magnetic field when mutual inductance changes. For transmission, resonant inverters with phase-shift pulse width modulation (PSPWM) are to generate carrier waves and alternating current. As data...

This invention proposes a novel light emitting diode (LED) lighting (dimmable) control scheme to transmit digital data through magnetic field generated by flyback driver that utilizes digitized adjust the brightness of LEDs for potential applications. design would eliminate cost establishing wireless transmission hardware simply relying on communication meet management system. The method used frequency-shift keying (FSK) technique secondary side system send primary side. interpreted commands...