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Bridge weigh in motion (B-WIM) uses accurate sensing systems to transform an existing bridge into a mechanism to determine actual traffic loading. This information on traffic loading can enable efficient and economical management of transport networks and is becoming a valuable tool for bridge safety assessment. B-WIM can provide site-specific traffic loading on deteriorating bridges, which can be...
This paper reports modeling and simulation of polysilicon piezoresistors as sensing mechanism using commercial 0.35 μm complementary metal oxide semiconductor (CMOS) process. The CMOS-MEMS resonator is designed to detect change in mass. The designed piezoresistors are composed of two types; longitudinal and transverse. CMOS polysilicon thin film is used as the piezoresistive sensing material. The...
This paper presents a 10 years experience of data driven models for sensor validation applied for petroleum and natural gas industry. Auto-associative kernel regression has been used as the main modeling method. The models achieved were embedded in software called Sentinell, which is used for sensors diagnosis. The software is being used in a natural gas compression station, and it has been evaluated...
A self-healing mmWave SoC integrating an 8052 microcontroller with 12kB of memory, an ADC, a temperature sensor, and a 3-stage cascode 60GHz LNA, implemented in a 32nm SOI CMOS technology exhibits a peak gain of 21dB, an average 3.3dB NF from 53 to 62GHz and 18mW power consumption. An indirect NF sensing algorithm was implemented on the integrated uC, which enables an adaptive biasing algorithm to...
CMOS-MEMS resonators have found a broad usage in mass sensing applications especially in biomedical field. This paper reports theoretical calculations and Finite Element Method (FEM) simulation for a proposed microresonator for detection of acetone in exhaled breath as biomarker for diabetes. The resonator is 760 µm long and 340 µm wide with 1.461ng effective mass, 21.331 kHz natural resonance frequency,...
This paper presents a capacitive CMOS-MEMS resonator for mass detection. Mass detection is used in many applications such as chemical industries and biomedical diagnosis. The technique used for this work is two dies bonded in parallel direction to get change in the capacitance whenever there is a change in mass and the device is electro-statically actuated. The resonance frequency of the resonator...
Magnetic RAM (MRAM) is considered as a promising non-volatile memory technology for aerospace and avionic electronics thanks to its intrinsic hardness to radiation. Data is stored on the spin direction “up” and “down” of electrons instead of positive and negative charge. However, MRAM-based non-volatile storage cells and logic circuits are vulnerable to Single Event Effects (SEE) due to their CMOS...
Given a number of patrollers, the channel patrol problem consists of determining the periodic trajectories that the patrollers must trace out so as to maximize the probability of detection of the intruder. We formulate this problem as an optimal control problem. We assume that the patrollers' sensors are imperfect and that their motions are subject to turnrate constraints, and that the intruder travels...
Modeling and simulation of a microcantilever designed to achieve high resonant frequency on the sensing area is presented in this paper. Simple analytical models of the microcantilever are generated to achieve estimates of the device performance and to check the validity of the subsequent simulation. CoventorWare simulation software is used to design and process the micromachined microcantilever gas...
In this paper, we propose a new method to locate faults on overhead power transmission lines. Line-to-ground or line-to-line faults induce transient currents in the shield wire, which flow partially to ground through the towers. In the towers closest to the fault position, the transient currents are greater and this behavior can be used to locate the fault. The method uses sensors distributed along...
In the majority of cases blindness is caused by retinal degenerative conditions such as Age-Related Macular Degeneration (AMD) and Retinitis Pigmentosa (RP). However, blind individuals still retain central visual pathways and processing mechanisms. Recent advances in Time of Flight (TOF) imaging technology have presented new opportunities to develop improved sensory substitution systems for compensation...
Antenna architecture is proposed that uses an active FE shield and proximity sensors to provide a mechanism to control the near field energy distribution of a wireless device based on the proximity to the operator. This system has advantages over passive shields in that the antenna system is responsive to its environment, adjusting the near field energy distribution to minimize energy deposition into...
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