Novel low-cost vision-sensing technology with controllable of exposal time for welding

2005 ◽  
Author(s):  
Wenzeng Zhang ◽  
Bin Wang ◽  
Nian Chen ◽  
Yipeng Cao
Keyword(s):  
Low Cost ◽  
Vision Sensing ◽  
Sensing Technology

scholarly journals A Review of Carbon Nanotubes-Based Gas Sensors

2009 ◽  
Vol 2009 ◽  
pp. 1-24 ◽  
Author(s):  
Yun Wang ◽  
John T. W. Yeow
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Low Cost ◽  
High Surface ◽  
Hollow Structure ◽  
Volume Ratio ◽  
Fast Response ◽  
Sensing Technology ◽  
Structure Of Nanomaterials

Gas sensors have attracted intensive research interest due to the demand of sensitive, fast response, and stable sensors for industry, environmental monitoring, biomedicine, and so forth. The development of nanotechnology has created huge potential to build highly sensitive, low cost, portable sensors with low power consumption. The extremely high surface-to-volume ratio and hollow structure of nanomaterials is ideal for the adsorption of gas molecules. Particularly, the advent of carbon nanotubes (CNTs) has fuelled the inventions of gas sensors that exploit CNTs' unique geometry, morphology, and material properties. Upon exposure to certain gases, the changes in CNTs' properties can be detected by various methods. Therefore, CNTs-based gas sensors and their mechanisms have been widely studied recently. In this paper, a broad but yet in-depth survey of current CNTs-based gas sensing technology is presented. Both experimental works and theoretical simulations are reviewed. The design, fabrication, and the sensing mechanisms of the CNTs-based gas sensors are discussed. The challenges and perspectives of the research are also addressed in this review.

Research on Digital Substation IOT Based on SAW Sensing Technology

2015 ◽  
Vol 738-739 ◽  
pp. 125-128 ◽  
Author(s):  
Da Wei Lv ◽  
Xiao Juan Li ◽  
Li Xin Yang ◽  
Dian Jun Liu ◽  
Kui Xiong ◽  
...  
Keyword(s):  
High Temperature ◽  
Internet Of Things ◽  
Electromagnetic Radiation ◽  
Low Cost ◽  
Fast Response ◽  
Harsh Environments ◽  
Sensing Technology ◽  
Digital Substation ◽  
Almost All ◽  
Rotating Objects

SAW sensing technology has advantages of wireless, passive, small size, low cost, fast response, strong anti-electromagnetic radiation, measurable for moving or rotating objects, tolerable for wet dirty or high temperature and other harsh environments. Comparing with the traditional sensing methods, the test of SAW sensing technology can cover almost all the needs of digital substation internet of things.

scholarly journals Genetically Encoded Sensor Cells for the Screening of Glucocorticoid Receptor (GR) Effectors in Herbal Extracts

Biosensors ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 341
Author(s):  
Chungwon Kang ◽  
Soyoun Kim ◽  
Euiyeon Lee ◽  
Jeahee Ryu ◽  
Minhyeong Lee ◽  
...  
Keyword(s):  
Drug Screening ◽  
Low Cost ◽  
Biologically Active ◽  
Drug Candidate ◽  
Fluorescence Signal ◽  
Biologically Relevant ◽  
Biological Targets ◽  
Sensing Technology ◽  
Medicinal Plant Extracts

Although in vitro sensors provide facile low-cost ways to screen for biologically active targets, their results may not accurately represent the molecular interactions in biological systems. Cell-based sensors have emerged as promising platforms to screen targets in biologically relevant environments. However, there are few examples where cell-based sensors have been practically applied for drug screening. Here, we used engineered cortisol-detecting sensor cells to screen for natural mimetics of cortisol. The sensor cells were designed to report the presence of a target through signal peptide activation and subsequent fluorescence signal translocation. The developed sensor cells were able to detect known biological targets from human-derived analytes as well as natural product extracts, such as deer antlers and ginseng. The multi-use capability and versatility to screen in different cellular environments were also demonstrated. The sensor cells were used to identify novel GR effectors from medicinal plant extracts. Our results suggest that decursin from dongquai had the GR effector function as a selective GR agonist (SEGRA), making it a potent drug candidate with anti-inflammatory activity. We demonstrated the superiority of cell-based sensing technology over in vitro screening, proving its potential for practical drug screening applications that leads to the function-based discovery of target molecules.

scholarly journals Development of a Compatible, Low Cost and High Accurate Conservation Remote Sensing Technology for the Hygrothermal Assessment of Historic Walls

Electronics ◽  
2019 ◽  
Vol 8 (6) ◽  
pp. 643 ◽  
Author(s):  
Elena Lucchi ◽  
Luisa Dias Pereira ◽  
Mirco Andreotti ◽  
Roberto Malaguti ◽  
David Cennamo ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Data Acquisition ◽  
Data Storage ◽  
Communication Systems ◽  
Low Cost ◽  
Environmental Parameters ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Remote Sensing Technology ◽  
Sensing Technology

This article aims to properly assess the hygrothermal properties of walls located in historic buildings, this study discloses the development of a remote sensing technology compatible with an in-situ measurement implemented in Palazzo Tassoni (Italy). As required by the international recommendations adapted to cultural heritage (CH), this monitoring system balances CH conservation, performance aspects and economic costs using an integrated multidisciplinary approach. Electronics for measurement of environmental parameters is composed of sensor measurements, data acquisition system and data storage and communication system. Data acquisition system, equipped with standard modbus-rtu interface, is designed to run standalone and it is based on two cloned single board PCs to reduce the possibility of data loss. In order to reduce the costs, RaspberryPI single board PCs were chosen. These run a C/C++ software based on standard modbus library and designed to implement multi-client server TCP/IP to allow communication with other devices. Storage and communication systems are based on an industrial PC; it communicates with sensor measurements’ system through a modbus-TCPIP bridge. PC runs a Labview software to provide data storage on a local database and graphical user interface to properly see all acquired data. Herein, some sensing options and approaches of measurement are described, unveiling different possible ways of enhancing the retrofit of CH with adapted technology.

A Low Standby Power Primary-Side Regulated Flyback Controller with Fast Dynamic Response

2015 ◽  
Vol 24 (05) ◽  
pp. 1550069 ◽  
Author(s):  
Qiang Wu ◽  
Yongyuan Li ◽  
Wei Guo ◽  
Zhangming Zhu
Keyword(s):  
Dynamic Response ◽  
Simple Structure ◽  
Low Cost ◽  
Input Voltage ◽  
Voltage Range ◽  
Bipolar Junction Transistor ◽  
Sensing Technology ◽  
Junction Transistor ◽  
Standby Power ◽  
Fast Dynamic

Primary-side regulated (PSR) flyback controller has been widely used in low power charger applications for its simple structure, low cost, good electrical isolation and compact volume. However, limited by traditional primary-side sensing technology, PSR flyback controller suffers from poor dynamic response. A low standby power PSR flyback controller with fast dynamic response has been presented, and novel feedback comparison and sampler combo controlling circuit has been presented in the paper. An offline PSR controller containing the proposed speedup circuit and driving directly power bipolar junction transistor (BJT) was fabricated in Episil 1.0 μm 40 V/5 V EPI-HVCMOS process. Measured result shows that, in the entire universal input-voltage range (90 Vac–264 Vac) and 5 V 1.0 A output power, the proposed PSR controller achieves standby power less than 22 mW and average efficiency line end with 20 AWG 1.5 m up to 78%. The output voltage of the proposed PSR controller becomes stable within 3.3 ms when load current changes abruptly from 0 to 1 A and from 1 A to 0.

Force and humidity dual sensors fabricated by laser writing on polyimide/paper bilayer structure for pulse and respiration monitoring

2018 ◽  
Vol 6 (17) ◽  
pp. 4727-4736 ◽  
Author(s):  
Jiangjiang Luo ◽  
Yanbo Yao ◽  
Xiaoshuang Duan ◽  
Tao Liu
Keyword(s):  
Low Cost ◽  
Bilayer Structure ◽  
Direct Laser Writing ◽  
Laser Writing ◽  
Respiration Monitoring ◽  
Sensing Technology ◽  
Direct Laser

Paper-based sensing technology was combined with direct laser writing for designing and fabricating low-cost wearable multifunctional sensors.

scholarly journals Vision sensing technology.

1989 ◽  
Vol 55 (9) ◽  
pp. 1579-1582
Author(s):  
Hiroyuki FUJISADA
Keyword(s):  
Vision Sensing ◽  
Sensing Technology
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