NFC-Based Wearable Optoelectronics Working with Smartphone Application for Untact Healthcare

Abstract

With growing interest in healthcare, wearable healthcare devices have been developed and researched. In particular, near-field communication (NFC) based wearable devices have been actively studied for device miniaturization. Herein, this article proposes a low-cost and convenient healthcare system, which can monitor heart rate and temperature using a wireless/battery-free sensor and the customized smartphone application. The authors designed and fabricated a customized healthcare device based on the NFC system, and developed a smartphone application for real-time data acquisition and processing. In order to achieve compact size without performance degradation, a dual-layered layout is applied to the device. The authors demonstrate that the device can operate as attached on various body sites such as wrist, fingertip, temple, and neck due to outstanding flexibility of device and adhesive strength between the device and the skin. In addition, the data processing flow and processing result are presented for offering heart rate and skin temperature. Therefore, this work provides an affordable and practical pathway for the popularization of wireless wearable healthcare system. Moreover, the proposed platform can easily delivery the measured health information to experts for contactless/personal health consultation.

Intelligent Wearable Sensors Interconnected with Advanced Wound Dressing Bandages for Contactless Chronic Skin Monitoring: Artificial Intelligence for Predicting Tissue Regeneration

“…It is the ratio of the central frequency to its bandwidth. The Q factor is described as where f 2 and f 1 are −3 dB frequency away from f r , f 2 – f 1 is the bandwidth of f r , L B is the bandage inductance, and C B is defined as the bandage capacitance. Accordingly, the higher Q factor, as exhibited in Figure c, implied that the monitored wound was rebuilt with new tissues of collagen and extracellular matrix, leading to healthier granulation tissues.…”

“…Upon potentiometric transduction of semiconducting polymer and iridium oxide particles, the wound dressing-integrated gauze validated wound monitoring in pH 6–9 . For the implementation of short-range radio technology, radio frequency identification (RFID) and near-field communication (NFC) have advanced for the development of sensing tags. ,, This near-field technology introduced the advantage of allowing the design of a passive circuit to obtain power supply from a mobile reader. As a result, there is no battery used for these tags.…”

Flexible battery-less wireless glucose monitoring system

“…The antenna used has 5 turns with 0.5 mm spacing between adjacent turns. Moreover, the NFC reader not only serves as a power source for the NFC device, but it can also read data from it 38 , 39 . In this case, an NFC-enabled smartphone can power the NFC device 40 , 41 .…”

“…The voltage supplied to the NFC circuit by the abiotic glucose hybrid fuel cell is recorded and transmitted wirelessly. The data received is stored in raw format which is fed through the modulator outputs namely at high frequency and 1-bit output speed 38 . A low pass digital filter function is used to attenuate high frequency noise resulting in a high-resolution signal from the abiotic glucose hybrid fuel cell.…”

Wearable Near-Field Communication Sensors for Healthcare: Materials, Fabrication and Application

“…Body temperature is also an essential signal for human health detection. Temperature sensors placed at different locations on the body can measure various parameters such as thermoregulation, heat expenditure, and wound healing [ 103 , 104 , 105 , 106 ]. Krishnan et al developed a wearable, epidermal wireless thermal sensor.…”