A low power FPGA based control unit for an implantable neuromodulation circuit

2019 ◽  
Author(s):  
Santiago Martinez ◽  
Juan P. Oliver
Keyword(s):  
Low Power ◽  
Control Unit

Low-Power Fast-Settling Low-Dropout Regulator Using a Digitally Assisted Voltage Accelerator for DVFS Application

2013 ◽  
Vol 284-287 ◽  
pp. 2526-2530
Author(s):  
Wei Ben Yang ◽  
Chi Hsiung Wang ◽  
Hsiang Hsiung Chang ◽  
Ming Hao Hong ◽  
Jsung Mo Shen
Keyword(s):  
Low Power ◽  
Output Voltage ◽  
Voltage Control ◽  
Control Unit ◽  
Settling Time ◽  
Control Technique ◽  
Dynamic Voltage ◽  
Low Dropout Regulator ◽  
Ldo Regulator ◽  
Fast Settling

This paper presents a low-power fast-settling low-dropout regulator (LDO) using a digitally assisted voltage accelerator. Using the selectable-voltage control technique and digitally assisted voltage accelerator significantly improves the transition response time within output voltage switched. The proposed LDO regulator uses the selectable-voltage control technique to provide two selectable-voltage outputs of 2.5 V and 1.8 V. Using the digitally assisted voltage accelerator when the output voltage is switched reduces the settling time. The simulation results show that the settling time of the proposed LDO regulator is significantly reduced from 4.2 ms to 15.5 μs. Moreover, the selectable-voltage control unit and the digitally assisted voltage accelerator of the proposed LDO regulator consume only 0.54 mW under a load current of 100 mA. Therefore, the proposed LDO regulator is suitable for low-power dynamic voltage and frequency-scaling applications.

scholarly journals Higway Criuse Control System for Vehicles using Low Power RF and Can Protocol

2020 ◽  
Vol 9 (6) ◽  
pp. 1147-1153
Keyword(s):  
Control System ◽  
Low Power ◽  
Control Unit ◽  
Speed Control ◽  
Traffic Signals ◽  
Fixed Time ◽  
Primary Target ◽  
Street Sign ◽  
Electronic Display ◽  
And Control

Nowadays mishaps are happening much of the time, causing destruction of numerous individuals by committing unassuming errors while driving (in school zone, slopes region, and roadways). In any case, once in a while it may not be conceivable to see the billboards put by the Highway Department to caution the drivers in such sort of spots and there is an opportunity for mishap. The headway in the processor innovation and microcontrollers has opened another framework intended to forestall the mishaps caused because of carelessness of drivers in observing rush hour gridlock flags close by the street and different abnormalities on the streets. So to suggest the driver about the zones and to consequently keep up the speed is cultivated by methods for low power RF innovation. The primary target is to plan an Electronic Display controller implied for vehicle's speed control and screens the zones, which runs on an implanted framework and can be hand crafted to fit into a vehicle's dashboard to show data on the vehicle. This framework whenever received by some state can successfully diminish the quantity of street mishaps brought about by speeding vehicles losing control of the vehicle at speed breakers or by driver's carelessness towards traffic signals. This paper presents another structure to control the speed of the vehicles at clumsy zones and security zone places for fixed time. The undertaking is made out of two separate units: Zone status transmitter unit, Electronic Display and Control unit. When the street sign is gotten from the zones, the vehicle's Electronic Display Controller Unit cautions the driver, to lessen the speed as indicated by the zone; it hangs tight for driver's reaction and diminishes the speed of vehicle consequently with CAN Protocol.

scholarly journals Design of Control unit for Low Power AU Using Reversible Logic

2012 ◽  
Vol 30 ◽  
pp. 631-638 ◽  
Author(s):  
H.V. Ravish Aradhya ◽  
B.V. Praveen Kumar ◽  
K.N. Muralidhara
Keyword(s):  
Low Power ◽  
Control Unit ◽  
Reversible Logic

scholarly journals Smartphone-Driven Low-Power Light-Emitting Device

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Hea-Ja An ◽  
Kyung-Won Kim ◽  
Mun-Ho Ryu ◽  
Han-Yeong Oh ◽  
Nam-Gyun Kim ◽  
...  
Keyword(s):  
Low Power ◽  
Alternative Medicine ◽  
Laser Therapy ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Control Unit ◽  
Smartphone Application ◽  
Recent Past ◽  
Light Emitting ◽  
Low Level

Low-level light (laser) therapy (LLLT) has been widely researched in the recent past. Existing LLLT studies were performed based on laser. Recently, studies using LED have increased. This study presents a smartphone-driven low-power light-emitting device for use in colour therapy as an alternative medicine. The device consists of a control unit and a colour probe. The device is powered by and communicates with a smartphone using USB On-The-Go (OTG) technology. The control unit controls emitting time and intensity of illumination with the configuration value of a smartphone application. Intensity is controlled by pulse width modulation (PWM) without feedback. A calibration is performed to resolve a drawback of no feedback. To calibrate, intensity is measured in every 10 percent PWM output. PWM value is linearly calibrated to obtain accurate intensity. The device can control the intensity of illumination, and so, it can find application in varied scenarios.

Acceleration Components in Heterogeneous Supercomputers

2011 ◽  
Vol 204-210 ◽  
pp. 765-768
Author(s):  
Xian Min Wei
Keyword(s):  
Energy Consumption ◽  
Power Consumption ◽  
Low Power ◽  
Control Unit ◽  
General Purpose ◽  
Low Power Consumption ◽  
Computing Power ◽  
General Purpose Processor ◽  
Computing Performance ◽  
Good Expansion

General-purpose processors continue to improve computing performance, but its energy consumption has far exceeded the increase in the proportion of performance. Specifically designed for the special purpose processor in the case of relatively low power consumption, can provide better performance. The general-purpose processor as the main control unit, special purpose processors as accelerators consisting of heterogeneous supercomputers will become a trend in supercomputer development. This paper introduces and analyzes several heterogeneous supercomputers used to build the acceleration components.While accelerate parts based on such components have obvious calculation advantages (high computing power, low power consumption), but with less application and difficult programming bottlenecks still exist. After all, the application number is limited which using hundreds, thousands or even more parallel computing for good expansion performance, and the workload of migration, development and optimization remains high.

scholarly journals An Ultra-Low-Power CMOS Supercapacitor Storage Unit for Energy Harvesting Applications

Electronics ◽  
2021 ◽  
Vol 10 (17) ◽  
pp. 2097
Author(s):  
Vasiliki Gogolou ◽  
Konstantinos Kozalakis ◽  
Eftichios Koutroulis ◽  
Gregory Doumenis ◽  
Stylianos Siskos
Keyword(s):  
Low Power ◽  
Control Unit ◽  
Logic Gates ◽  
Low Complexity ◽  
Voltage Regulation ◽  
Energy Conditions ◽  
Cmos Process ◽  
Storage Unit ◽  
Ultra Low Power ◽  
Low Power Cmos

This work presents an ultra-low-power CMOS supercapacitor storage unit suitable for a plethora of low-power autonomous applications. The proposed unit exploits the unregulated voltage output of harvesting circuits (i.e., DC-DC converters) and redirects the power to the storage elements and the working loads. Being able to adapt to the input energy conditions and the connected loads' supply demands offers extended survival to the system with the self-startup operation and voltage regulation. A low-complexity control unit is implemented which is composed of power switches, comparators and logic gates and is able to supervise two supercapacitors, a small and a larger one, as well as a backup battery. Two separate power outputs are offered for external load connection which can be controlled by a separate unit (e.g., microcontroller). Furthermore, user-controlled parameters such as charging and discharging supercapacitor voltage thresholds, provide increased versatility to the system. The storage unit was designed and fabricated in a 0.18 um standard CMOS process and operates with ultra-low current consumption of 432 nA at 2.3 V. The experimental results validate the proper operation of the overall structure.

Video-Enhanced Microscopy--Better Visibility of Plant Cell Structures

1982 ◽  
Vol 40 ◽  
pp. 182-185
Author(s):  
N.S. Allen ◽  
R.D. Allen
Keyword(s):  
Diffraction Pattern ◽  
Theoretical Basis ◽  
Numerical Aperture ◽  
Gain Control ◽  
Control Unit ◽  
Camera Control ◽  
Variable Gain ◽  
Contrast Method ◽  
Fine Detail ◽  
Cell Structures

Various methods of video-enhanced microscopy combine TV cameras with light microscopes creating images with improved resolution, contrast and visibility of fine detail, which can be recorded rapidly and relatively inexpensively. The AVEC (Allen Video-enhanced Contrast) method avoids polarizing rectifiers, since the microscope is operated at retardations of λ/9- λ/4, where no anomaly is seen in the Airy diffraction pattern. The iris diaphram is opened fully to match the numerical aperture of the condenser to that of the objective. Under these conditions, no image can be realized either by eye or photographically. Yet the image becomes visible using the Hamamatsu C-1000-01 binary camera, if the camera control unit is equipped with variable gain control and an offset knob (which sets a clamp voltage of a D.C. restoration circuit). The theoretical basis for these improvements has been described.

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