ABSTRACT
Wearable devices have played a key role in the medical industry, especially since the COVID-19 pandemic spread. The need for a self-monitoring system increased since the spread of the virus. With the development of semiconductor technology and the increased research and development in medical wearable devices, wearable devices have been able to detect the medical condition of patients. This paper presents a biomedical wearable device to monitor the vital signs of patients. The device can be used to detect the patient COVID-19 infection. Data were extracted using different sensors and other components, and results were displayed on a mobile application that showed the health status of the patient. A PCB (Printed Circuit Board) design was made for the purpose of making the system a wearable device. The system power consumption ranged from 5-37.5mW. © 2022 IEEE.
ABSTRACT
Many different types of PCB defects can occur throughout the printed circuit board assembly process. The procedure of quality control is essential. A human inspection is important to ensure that the PCBA is delivered in excellent condition. It is critical to train QC employees to understand PCBA inspection standards to determine which PCBAs are acceptable. High rates of PCBA reject, even though the defects are acceptable to the customer, will have an impact on production costs. To improve Quality control performance, the development of decision-making skills of PCBA visual inspection employees was researched. Because to the COVID19 situation, case-based training was provided via online tools. However, in order to clear up any misunderstandings and conduct PCBA inspection tests, face-to-face discussion was still needed. In addition, the trained QC employee's performance was measured using attribute gauge repeatability and reproducibility, which indicated that the QC employee's decision-making capability had increased. When compared to appraisers before training and standard respectively, employee inspection performance was 11.94 % and 5.69 % better. © 2022 IEEE.
ABSTRACT
Rapid advancements in affordable, miniaturised air pollution sensor technologies offer the potential to capture the high variability of personal exposure to air pollution during daily life with unprecedented spatial and temporal resolution. However, concerns remain regarding the suitability of these novel technologies for scientific and policy purposes due to their lack of reliability. The aim of this work is the development of three types of portable air quality devices that monitor particulate matter, differential pressure and outdoor emissions (CO, CO2, O3 and VOCs) with high reliability using low-cost sensors and communicating measurements to the cloud in real time. Reliability is strengthened in all three places: at the sensor level, the device/edge level and at the cloud, cashing data until network connectivity is restored. In order to evaluate their efficiency, two case studies were deployed: (a) in a modern industrial setting and (b) in an IT office space in Greece and the findings are reported.
ABSTRACT
Since the early reports of SARS-CoV-2 in Wuhan, China in the winter of 2019, the virus spread has resulted in the most socially-crippling pandemic of the last century. Here, we report the development of a rapid, molecular COVID-19 test utilizing for the first time a loop-mediated isothermal amplification (LAMP) assay on Lab-on-Printed Circuit Board (Lab-on-PCB) to exploit the established integration and up-scaling advantages the latter offers. © 2021 MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences. All rights reserved.
ABSTRACT
The present work describes the technological development of a low-cost and miniaturized instrument to Polymerase Chain Reaction (PCR) for detection of Sars-CoV-2 ribonucleic acid (RNA) and, potentially, an open platform for detection of other microorganisms. Most devices use a big aluminum bar coupled to a peltier to heat and cool the reaction tube;however, a lot of energy is wasted in the process. To take advantage of the energy and reduce cost–benefit of the device, we introduced the Joule Effect in the printed circuit board for heating samples, and a computer fan for cooling. Other improvements such as a precise heating sample spot, and a LM35 thermal sensor with a PID (proportional integral-derivative) algorithm to control the circuit temperature, have also been included. The processes were carried out based on cost–benefit and performance to bring to the market a robust detection platform for in vitro diagnostic tests. © 2022, Springer Nature Switzerland AG.
ABSTRACT
Among these: the increase of product life cycles, the implementation of the industrial symbiosis, the conversion of products into services, the reduction of waste production, the creation of secondary raw materials market [4]. The authors have demonstrated the essential role of research and human resources that, stimulated through innovative teaching in the circular economy field, produce positive effects for both society and market levels. The implementation of a life cycle approach has allowed to estimate the benefit of an innovative approach able to combine the recovery of raw material, with the removal of hazardous As and the H2 recovery which could drive the mine towards a clean energy transition (Contribution 5). The choice of printed circuit boards as waste to treat has been due to a double reason: the availability of high quantities of this kind of equipment (for its use in many applications) and its metal concentrations, higher than that the ores. [...]the identification of sustainable processes is essential to reduce the waste flows to manage and to create relevant stocks of valuable elements.
ABSTRACT
Sub-zero temperature sensors (SZTSs) have potential applications in safely storing COVID-19 vaccines. Herein, an SZTS based on laser-induced carbonization (LIC) achieved by a nanosecond infrared laser with a wavelength of 1064 nm is reported. Direct laser writing is adopted for laser-induced carbon in Kapton polyimide sheets with a thickness of 125 µm. The sensor exhibits a good linear change in resistance to sub-zero temperatures ranging from 0 to −150 °C, where the coefficient of determination adjusted R-square (R2) value is 0.99238, which indicates a good linear fit. The sensor exhibits a stable static response at all temperatures over time. The dynamic responses by controlling the liquid nitrogen gas and placing an ice cube on the sensor are also measured to validate the sensor. Notably, the electrical performance of the sensor remains stable even after 15 h. The sensor response of the LIC sample validates the 3D variable range-hopping charge transport mechanism, governed by the Mott equation with a good linear fit, which is mainly owing to disorder in its structure. LIC-based SZTSs can enable sensors that are ultra-fast to fabricate, roll-to-roll processable, economical, and more significantly, can be interfaced with flexible printed circuit boards without any additional interfacing. © 2022 Wiley-VCH GmbH