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In this paper we propose a new front-end for resonating sensors which is based on a logic inverter working as amplifier. The front-end is compact and auto-zeroing which makes it a good candidate for integration and for low power applications. It has been simulated in AMS-350nm CMOS Technology and a prototype has been fabricated using discrete components on a PCB. The circuit was tested with a BvD...
In this paper successive approximation register (SAR) analog-to-digital converter (ADC) and multiplied delay locked loop base phase locked loop (MDLL) implemented in tsmc 0.18-um CMOS process is presented for R-G-B sensors in 3D camera application. By applying single-sided switching method that reduces DAC switching energy, the proposed SAR ADC achieves less power consumption. Also, asynchronous control...
Blur in images, caused by camera motion with an open shutter, is usually thought of as a problem. The algorithm described in this paper shows instead that it is possible to use the blur caused by the integration of light rays at different locations along a moving camera trajectory to extract information about the light rays that are present within the scene. Retrieving the light rays present within...
To compensate for time-zero (due to process variation) and time-dependent (due to e.g. Bias Temperature Instability (BTI)) variability, designers usually add design margins. Due to technology scaling, these variabilities become worse, leading to the need for bigger design margins. Typically, only worst-case scenarios are considered, which will not present the actual workload of the targeted application...
This poster presents a hardware/software solution, called On-The-Go Switch (OTGS), enabling a smartphone to control the connection state of a USB-attached device. Through an example, we show how OTGS can reduce the energy consumption of portable spectrum sensing platform utilizing low-cost Software Defined Radio. We show that OTGS can reduce the energy consumption by 47%, compared to a baseline, which...
Smart and connected communities and their associated edge devices are creating new demands on network services. Edge network connectivity is often not resilient to failures, leading to data loss when network devices are isolated by the failure of a single service provider, while other providers are still functional. We propose MetroSDX, a neutral network design that increases the resiliency of edge...
The project aims at saving energy by detecting the vehicle movement on highways and switching on the block of street light ahead of it and simultaneously switching off the trailing lights. This project requires a sensor to detect the day and night and an array of piezoelectric sensors to detect the vehicle movements and accordingly switching on the lights ahead of it. So when there are no vehicles...
A time-driven pole placement based Memory Less State Feedback Controller (MSFC) has been designed using the Linear Matrix Inequality (LMI) to control a plant over an network under variable latency (jitter) and data-loss. This Networked Control System (NCS) has been formulated as an Asynchronous Dynamic System (ADS) with rate constraints. The pole placement based controller has been derived to place...
Spin-transfer torque magnetic RAM (STT-MRAM) is one of the most promising nonvolatile memories with guaranteed high-speed read and write operations. Along with performance improvements in the tunnel magnetoresistance (TMR) and the magnetic tunnel junction's (MTJ) required switching current, there have also been reports on high-capacity (up to tens of Mb) STT-MRAM [1–4]. In [2] a perpendicular-TMR...
Switching power converters with fast load transients are crucial for application processors (APs) to facilitate system-level power adaptability with high current slew rate. While current-mode hysteretic control has been popularly employed in switching converters for simple structure, robust operation and fast transient response [1], it still does not suffice for the unprecedented 1A/ns current slew...
This paper deals with the diagnosis problem of hybrid dynamic system. An Efficient diagnosis technique has to be adopted to detect, isolate faults. The modeling tool selected is the hybrid automata for its power analysis. A simple process is used to demonstrate the modeling steps and the time analysis method to reach the diagnosis results.
A wind turbine emulator is constructed using a three phase induction motor and a vector controlled drive operating in torque control mode. A switched reluctance machine, acting as a generator, operates in speed control mode and applies braking torque on the emulated wind turbine. Maximum power point tracking is achieved using Hill-Climbing method by perturbing the speed of the switched reluctance...
This paper proposes an alternate switched-capacitor amplifier capable of handling rail-to-rail input common-mode voltage without using a rail-to-rail op-amp. Unlike most existing switched-capacitor architectures, the proposed alternate architecture holds the op-amp input terminals at a fixed voltage level in both the sample and hold phases irrespective of the input signal common-mode voltage. Designed...
This work applies one cycle control algorithm to reduce the torque ripple of brushless dc motor drives having non-ideal back emf. The main principle involved here is to ensure that the average torque follows the reference command in each switching cycle. The average torque is obtained indirectly via dc bus voltage and current, which gives the energy flowing into the system in each control cycle. The...
In this paper, the problem of distributed state estimation using networked local sensors is studied. Our previously proposed algorithm [1], [2] is further extended to the scenario where the underlying model of the state of interest is not known to each agent. Instead the underlying model belongs to a finite set of possible models known to all agents, and switches over time. The switching process follows...
Pressure switches are the most important entities used in the process industry. A pressure switch is an instrument designed to have a switching action on the process pressure. This paper gives a detailed study and analysis of the pressure switch. This article also throws some light on various kinds of routine and type tests performed on the pressure switch, to ensure the proper functioning of the...
The controller of a Conventional Unity Power factor correction (PFC) rectifier needs three feedback signals sensed from the converter, i.e., rectified input voltage, output voltage and input inductor current. Inductor current is sensed using current sensors, which are often expensive. Eliminating current sensors in PFC circuits is a subject of research interest. This paper gives a novel technique...
The paper presents the laboratory based model of an “Energy Management Unit” for the optimum use of the electricity produced from alternative sources like biogas plant and solar photovoltaic system at an agriculture farm. The electrical energy produced at the farm is distributed among the loads according to the availability and requirement. A diesel generator is used as a backup at the farm. If the...
In this paper a three phase inverter is designed for operating a brushless dc motor. Following the operating principle of a brushless dc motor, required switching is done by a microcontroller (arduino uno). Necessary gate driver circuit is also designed for proper operation of the inverter. The practical result matches with the simulation result and the motor runs successfully.
In multi-channel cognitive radio ad hoc networks (CRAHNs), packet fragmentation is impacted by new factors besides those in traditional wireless networks due to the unique CR functions. For example, spectrum handoff is the technique for a secondary user (SU) to continue its transmission when a primary user (PU) reoccupies its current transmitting channel. Then, a short frame is less likely to be affected...
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