All-Day Mobile Healthcare Monitoring System Based on Heterogeneous Stretchable Sensors for Medical Emergency

Abstract

Epidermal and wearable electronic sensor technologies have gained extensive interest in recent years owing to deliver real-time healthcare information to the personalized smartphone. Herein, we proposed a fully integrated wearable smart patch-based sensor system with Kirigami-inspired strain-free deformable structures having temperature and humidity sensors along with a commercial acceleration sensor. The presented fully integrated wearable sensor system easily attaches to the skin to accurately determine the body information, and integrated circuit including read-out circuit and wireless communication transfer medical information (temperature, humidity, and motion) to mobile phone to assist with emergencies due to "unpredictable" deviations and to aid in medical checkups for vulnerable patients. This article addresses the challenge of all-day continuous monitoring of human body biological signals by introducing the well-equipped breathable (water permeability ∼ 80 gm −1 •h −1), excellent adhesion to the skin (peel strength < 200 gf/12 mm), biocompatible, and conformable smart patch that can absorb the moisture (sweat) generated from the skin without any harshness and allowing the users' to continuously monitor the early detection of diagnosis. Furthermore, the proposed patchbased medical device enables wireless sensing capabilities in response to rapid variation, equipped with a customized circuit design, low-power Bluetooth module, and a signal processing integrated circuit mounted on a flexible printed circuit board. Thus, a unique platform is established for multifunctional sensors to interface with hard electronics, providing emerging opportunities in the biomedical field as well as Internet-of-Things applications.

Robotic Arm Control System Based on AI Wearable Acceleration Sensor

“…e median filter is a typical low-pass filter proposed by Yüzer et al [15]. is technology can usually overcome the blurring of some details in the image generated by the linear filter under certain conditions and can eliminate the interference pulse well and at the same time can form a certain degree of protection for the edge of the target image [16]. e basic principle of median filtering is to establish a sliding window, which contains many pixels, and take the median value of all these pixels and use it as the new value of the center point of the window [17].…”

Smart Patch for Skin Temperature: Preliminary Study to Evaluate Psychometrics and Feasibility

“…The skin temperature-measuring smart patch used for this study was developed in the Multifunctional Nano Bio Electronics laboratory of Professor Sunkook Kim at the affiliated university and manufactured as a prototype by T&L Co., Ltd. and Korea Electronics Technology Institute. As the engineering details were reported [ 28 ], the platinum (Pt) as a sensing material is utilized and patterned by a simple lithography method [ 28 ], shown in the inset of Figure 2 . The resistance response of the proposed temperature sensor was measured under different temperature levels ranges from 30 to 40 °C, revealing stable linear characteristics as shown in Figure 2 .…”

“…The resistance response of the proposed temperature sensor was measured under different temperature levels ranges from 30 to 40 °C, revealing stable linear characteristics as shown in Figure 2 . Additionally, to establish accurate and error-free monitoring of body temperature, the anisotropic conductive film (ACF) bonding technique was utilized for bonding the sensor part to the circuit part (see Figure 2 and Figure 3 ) [ 28 ]. This device not only detects microbiological signals, such as body temperature, from a person’s body surface but also is also flexible and compact (40 mm × 40 mm).…”

“…Thus, this study used smart patches developed by this multidisciplinary research team. A previous study has confirmed the highly sensitive and responsive performance of the smart patch [ 28 ], however, there is a gap between the laboratory environments and the real world for body temperature. This multidisciplinary study aimed to: (1) describe the process to develop the smart patches to measure the body temperature of adults living in their real environments; (2) evaluate the reliability and validity by comparing the body temperature measured by the infrared forehead thermometer and (3) report usability including user experience of smart patches in daily life.…”

Stretchable anisotropic conductive film (S-ACF) for electrical interfacing in high-resolution stretchable circuits

“…However, in the stretchable devices, the large mismatch in elastic modulus between stretchable circuit lines and the rigid or flexible electrodes causes delamination and fracture during repeated stretching cycles (28)(29)(30)(31)(32). Although weak electrical interface is the main cause of device failure in the stretchable electronics and the lowresolution interface is the bottleneck of miniaturized stretchable devices, a small number of the related researches have been carried out for low-resolution interfacing (11,(33)(34)(35)(36) and high-resolution interfacing has not yet been successful.…”