scholarly journals Recent Advancements in Inertial Micro-Switches

Electronics ◽  
2019 ◽  
Vol 8 (6) ◽  
pp. 648 ◽  
Author(s):  
Yingchun Peng ◽  
Yanling Sun ◽  
Guoxi Luo ◽  
Guoguo Wu ◽  
Tao Zhang

Inertial micro-switches have great potential in the applications of acceleration sensing, due to the integrated advantages of a small size, high integration level, and low or even no power consumption. This paper presents an overview of the recent advancements made in research on the sensitive direction, threshold acceleration, contact effect, and threshold accuracy of inertial micro-switches. The reviewed switches were categorized according to the performance parameters, including multi-directional switches, multi-threshold switches, persistent closed switches, flexible-electrode switches, and low-g high-threshold-accuracy switches. The current challenges and prospects are also discussed.

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Neeta Pandey ◽  
Bharat Choudhary ◽  
Kirti Gupta ◽  
Ankit Mittal

This paper proposes new positive feedback source coupled logic (PFSCL) tristate buffers suited to bus applications. The proposed buffers use switch to attain high impedance state and modify the load or the current source section. An interesting consequence of this is overall reduction in the power consumption. The proposed tristate buffers consume half the power compared to the available switch based counterpart. The issues with available PFSCL tristate buffers based bus implementation are identified and benefits of employing the proposed tristate buffer topologies are put forward. SPICE simulation results using TSMC 180 nm CMOS technology parameters are included to support the theoretical formulations. The performance of proposed tristate buffer topologies is examined on the basis of propagation delay, output enable time, and power consumption. It is found that one of the proposed tristate buffer topology outperforms the others in terms of all the performance parameters. An examination of behavior of available and the proposed PFSCL tristate buffer topologies under parameter variations and mismatch shows a maximum variation of 14%.


Author(s):  
Yogesh Shrivastava ◽  
Tarun Kumar Gupta

Ternary logic has been demonstrated as a superior contrasting option to binary logic. This paper presents a ternary subtractor circuit in which the input signal is converted into binary. The proposed design is implemented using Carbon Nanotube Field Effect Transistor (CNTFET), a forefront innovation. A correlation has been made in the proposed design on parameters like Power-Delay Product (PDP), Energy Delay Product (EDP), average power consumption, delay and static noise margin. Every one of these parameters is obtained by simulating the circuits on the HSPICE simulator. The proposed design indicates an improvement of 60.14%, 59.34%, 74.98% and 84.28%, respectively, in power consumption, delay, PDP and EDP individually in correlation with recent designs. The increased carbon nanotubes least affect the proposed subtractor design. In noise analysis, the proposed design outperformed all the existing designs.


Author(s):  
Maytham Safar ◽  
Hasan Al-Hamadi ◽  
Dariush Ebrahimi

Wireless sensor networks (WSN) have emerged in many applications as a platform to collect data and monitor a specified area with minimal human intervention. The initial deployment of WSN sensors forms a network that consists of randomly distributed devices/nodes in a known space. Advancements have been made in low-power micro-electronic circuits, which have allowed WSN to be a feasible platform for many applications. However, there are two major concerns that govern the efficiency, availability, and functionality of the network—power consumption and fault tolerance. This paper introduces a new algorithm called Power Efficient Cluster Algorithm (PECA). The proposed algorithm reduces the power consumption required to setup the network. This is accomplished by effectively reducing the total number of radio transmission required in the network setup (deployment) phase. As a fault tolerance approach, the algorithm stores information about each node for easier recovery of the network should any node fail. The proposed algorithm is compared with the Self Organizing Sensor (SOS) algorithm; results show that PECA consumes significantly less power than SOS.


As electricity consumption is very high so using IOT ,reduction of electricity consumption is tried company nowadays but the use of it in extreme levels results as a damage to environment and personal financial conditions.Involving fields of application and Internet of things sensors are made. In this paper an architecture is introduced, that helps the smart cities to save resources for future. Consumption of electricity in a way is destroying the environment so this paper helps in saving the cost of electricity as well as saving the environment using wireless connections. Finally a new system is proposed keeping in mind the old one and its challenges. This system overcomes all the challenges and difficulties faced by the old one. To implement the framework electrical appliances such as lights, fans, ac etc are incorporated within the proposed system of reduction of electricity consumption


2016 ◽  
Vol 4 (4) ◽  
pp. 118-121
Author(s):  
Pankaj Prajapati ◽  
Dr. Shyam Akashe

In the beginning of the last decade, battery-powered hand-held devices such as mobile phones and laptop computers emerged. For that application we have to design a device which will consume minimum amount of energy. For that reason in this article we focused on power consumption and how to calculate the power. In this paper, an analysis of different delay lines based on CMOS architecture has been done. The effect of supply voltage on digital delay lines has been analysed as how supply voltage affected the value of power consumption of the digital delay line. After the analysis of those performance parameters, the trade-off has been made for better performance of delay lines.


2017 ◽  
Vol 9 (4) ◽  
pp. 177
Author(s):  
Sajad Ahmadian Naybin ◽  
Yosef Farhang

Body Area Network, due to recent advances in wearable sensors, intelligent surveillance with small size and low weight are made in low power consumption. Human physiological activities are constantly monitored by sensors. In this article, key controversies surrounding the field of BAN communications, including layers, and for example, the patient's health status and patterns of movement and etc.


2013 ◽  
Vol 722 ◽  
pp. 292-295
Author(s):  
Kun Li ◽  
Han He

The semiconductor thermoelectric generator is a thermoelectric conversion device and is produced according to See back effect of the semiconductor. As a special energy conversion way, its advantages are obvious, with significant recycling effects of low temperature difference energy. A semiconductor thermoelectric generating device is made in accordance with the above theory. The performance parameters including the output power of the generating device are measured through experiments.


1991 ◽  
Vol 11 (2) ◽  
pp. 99-107 ◽  
Author(s):  
P. A. Fleitz ◽  
C. J. Seliskar ◽  
R. N. Steppel ◽  
J. M. Kauffman ◽  
C. J. Kelly ◽  
...  

New excimer-pumped laser dyes based on p-quaterphenyl are described and the associated performance parameters are presented. A discussion of the variations in the performance parameters found is made in terms of dye chemical structures. Most of the dyes studied are significantly better than the chosen reference dye BBQ. The best dye in the series (dye 3) is stabilized both by ring-alkylation and by ringbridging. The net effect is the production of a new dye with a lifetime ten times greater than that of the reference dye BBQ.


Cognitive Radio (CR) has advanced like a brilliant innovation for crossing over the divergence between the accessibility and assignment of the radio recurrence range among various clients. It can change its transmission parameters dependent on the apparent accessibility of the range groups in its working condition. Cognitive radio (CR) innovation vows to be one potential answer for take care of the issue of absence of recurrence range, by permitting access of unlicensed clients in authorized groups, in view of a shrewd methodology and without meddling with the authorized user(PU). Subjective Radio has developed as a savvy innovation in crossing over the divergence between the accessibility and distribution of the radio recurrence range among numerous clients. This paper shows an outline of the spectrum holes in the licensed bands, the concepts of CR, types, spectrum holes, its features and sensing methods the transceiver details and it compares with conventional radio in terms of performance parameters such as interference, operating frequency, security, spectrum utilization, reliability, efficiency and power consumption


2009 ◽  
Vol 74 ◽  
pp. 179-182 ◽  
Author(s):  
Qing Zhang ◽  
Nikola Pekas ◽  
David Juncker

Electrostatically actuated microvalves are appealing candidates to build fully integrated microfluidic circuits because of the direct transduction of electrical signals into mechanical responses at low power consumption levels. Practical solutions, however, are still lacking due to their multi-layered architecture and difficulties in incorporating heterogeneous materials. In this paper, we report the design and fabrication process of an electrostatically actuated gas microvalve amenable to large scale integration for gas flow control. The device we designed consists of an upper die, containing a flexible electrode sealed by a thin elastic membrane, and a lower die, containing gas channels of trapezoidal cross-section and fixed electrodes. Each microvalve is defined by one fixed electrode spanning the floor and sidewalls of the trapezoidal gas channel and one corresponding flexible electrode suspended above the channel. In contrast to the conventional parallel-plate arrangement of electrodes, the two electrodes are approximated starting from the edges of the trapezoidal gas channel during the actuation step, which is advantageous for lowering the required actuation voltage. The upper die was fabricated by replica molding in polymeric material, the lower die was fabricated in a glass substrate by conventional microfabrication techniques, and the two dies were subsequently aligned and bonded using an adhesive layer. This reported low cost fabrication process could be implemented in any basic microfabrication facility. When a net pressure up to 1 bar was applied to the gas channel, reasonable flow rate was achieved. We also observed displacement of the flexible membrane when a DC voltage of 200 V was applied to a pair of electrodes. These preliminary results show that this microvalve is a promising candidate for integrated on-chip valving and will allow for building large scale microfluidic circuits with reduced power consumption.


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