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We propose a column-based split cell-VSS (CS-CVSS) data-aware write-assisted (DAW A) 9T ultra-low voltage SRAM with enhanced read sensing margin in 28nm FDSOI technology. The proposed write-assist technique (CS-CVSS and DAWA) improve both half-select SNM and write margin. The proposed 3T low leakage read port enhances read sensing margin by minimizing bitline leakage through negative gate to source...
Low Power Wide Area Networks (LPWAN) are used in a number of applications, including disaster monitoring and recovery networks. LPWAN sensors capture data bits and transmit them via dedicated gateways, which are connected to public carrier networks (e.g., cellular networks). One of the challenges encountered in disaster management scenarios revolves around the carry/forward sensed data and geographical...
Inorganic phosphor material, gadolinium oxysulphide active with terbium (Gd2O2S:Tb3+) has been previously investigated as a scintillator used in the dosimeter to detect the X-Ray dose due to its high light yield efficiency of converting the X-Ray into the visible green lights. Apart from the properties of light yield efficiency, fast scintillation and lower energy resolution matters for the clinic...
Silicon nanowire (SNW) field-effect transistors (FETs) have proven an emerging highly sensitive bio/chemical sensor due to their huge surface-to-volume ratios. However, fabrication of SNWs with both high output and low cost is still challenging. This paper presents a new fabrication method using sidewall mask technology. By depositing a conformal thin film on a sacrificial pattern and removing the...
In this paper, an integrated gate drives and current sensing solution for SiC (Silicon Carbide) power module is proposed. The gate drives and current sensing share the same isolated power supply to minimize the amount of dc rails. The isolated power supply is based on fly-buck topology, which is very suitable for high-frequency operations to minimize the volumetric occupation. Each gate drive has...
Crowd sensing exploits users' smart devices and human mobility to collect information on a large scale. To realize a crowd sensing campaign, sensing tasks with spatio-temporal requirements are distributed to the devices that can provide the requested information. Typically, the distribution of sensing tasks relies on a centralized communication infrastructure such as cloud servers. However, such an...
Examining the degree of achievement of principal specifications through prototyping during early development of an Internet of Things (IoT) system enables anticipation of what is to be accomplished by completion and confirmation of the user-defined market response. This paper presents a proposal of a method of evaluating examination results using analytic hierarchy process (AHP) for objective estimation...
Smart sensing, devices, and monitoring are essential to localized motor condition monitoring and service applications. A unique approach to the smart device is the use of low-cost wireless sensors for machine condition measurement. Smartphones may be used as the computational platform that acquires motor parameters from wireless sensors using a compatible local communication. Considering the widespread...
We propose a new framework combining dynamic sampling rates for healthcare sensors driven by user behavior, and an adaptive MAC scheduling scheme applied to the time-slotted channel hopping (TSCH) protocol in IEEE 802.15.4, which provides high throughput and reliable communications. First, we introduce a system software architecture for machine-learning-assisted healthcare monitoring that detects...
This paper presents a multi-layer distributed performance management model for Internet of Things (IoT) as a service for caregivers. Performance monitoring and control of IoT devices and services are vital functions for e-health systems. Cloud-based IoT systems with centralized data centers further underline the need for distributed management. The main contribution of this paper is a model and prototype...
An original and modern integrated current sensor is designed and presented in this paper. It can provide a sense current proportional to an output current available to the microcontroller via an external resistor. The ratio between output and sense current is modeled and simulated. The errors between the two currents increase in low currents domain. A solution consisting in a gate back regulation...
The technology of the IoT system components belong to the science and engineering category. However, if composition elements of the IoT system can be configured easily and used for education, students of the liberal arts might construct IoT prototype systems. Students are then expected to create ideas related to specialized fields of the liberal arts using experience obtained the construction. Creation...
Poor air quality in urban areas is becoming an important problem that needs to be addressed. This paper presents the system architecture of project Urb@nEcoLife for compilation of environmental data using low-cost data sensors. Although there are several proposals dealing with sensor networks, most of them focus on solving partial problems. Urb@nEcoLife is a comprehensive proposal that develops a...
Automation of modern industrial plants require real-time tracking of object locations and sensing of local and ambient parameters for variety of applications such as counting and tracking of objects in assembly line, detection and positioning of failures of machines etc. Mostly, discrete Real Time Location System (RTLS) performs object tracking in existing industrial automation without its integration...
Software Defined Networks (SDN) have been utilized in applications of the Internet of Things (IoT), termed as software-defined IoT network, because of the popularity and capability of mobile devices being used for networking in relatively large areas. In a software-defined IoT system, the sensing data are asynchronously harvested by the mobile sensing nodes, and are also asynchronously uploaded to...
The resource constraint is one of the top issues in the Internet of Things network. All activity in the network node should be carefully designed and managed to support the resource efficiency of the network. Hence, an energy efficient transceiver like ZigBee is popularly used as the infrastructure for the Internet of Things edge network. This paper presents our method for efficient ZigBee router...
The remote monitoring and control of machines are essential in industrial environments. Emerging communication technologies such as Web of Things and Machine to Machine Communication can meet this demand for automation in Industry 4.0. This paper aims to introduce a solution for continuous and remote monitoring of electrical quantities in smart industrial environments with three-phase systems. The...
Non-invasive, environmental monitoring is being successfully utilised to improve health care outcomes for patients while allowing them to more safely and comfortably live in their homes instead of health care facilities. This promises to reduce costs and ease the health care burden for many countries globally. However, these systems are still in early stages of research and only highly skilled researchers...
In this paper, we present a simple differential CMOS ISFET based pH sensor. The design uses two different sensing areas. The resulting sensor reduces complexity and power consumption making it suitable for implantable biomedical applications. The design is implemented in a standard 130nm process and the design constraints on sensitivity are explored. Analytical results based on theory show that sensor...
This paper reports on the layout optimization of Pt-AlGaN/GaN HEMT-sensors for enhancing hydrogen sensor performance. Sensors with gate width and length ratios Wg/Lg from 0.25 to 10 were designed, fabricated and tested for the detection of hydrogen gas at 200 °C. Sensitivity, sensing current variation and transient response are directly related to the sensor gate electrode Wg/Lg ratio. The obtained...
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