scholarly journals Polymeric Transducers: An Inkjet Printed B-Field Sensor with Resistive Readout Strategy

Sensors ◽  
2019 ◽  
Vol 19 (23) ◽  
pp. 5318 ◽  
Author(s):  
Bruno Andò ◽  
Salvatore Baglio ◽  
Ruben Crispino ◽  
Vincenzo Marletta
Keyword(s):  
Low Cost ◽  
Experimental Results ◽  
Excitation Current ◽  
Drying Time ◽  
Magnetic Field Sensors ◽  
Position Sensing ◽  
Field Sensor ◽  
Mechanical Sensing ◽  
Current Detection ◽  
Device Responsivity

Magnetic field sensors are successfully used in numerous application contexts such as position sensing, speed detection, current detection, contactless switches, vehicle detection, and electronic compasses. In this paper, an inkjet printed magnetic sensor, based on the magneto-mechanical sensing principle, is presented together with a physical model describing its physical behavior and experimental results. The main novelties of the proposed solution consist of its low cost, rapid prototyping (printing and drying time), disposability, and in the use of a commercial low-cost printer. A measurement survey has been carried out by investigating magnetic fields belonging to the range 0–27 mT and for different values of the excitation current forced in the actuation coil. Experimental results demonstrate the suitability of both the proposed sensing strategy and model developed. In particular, in the case of an excitation current of 100 mA, the device responsivity and resolution are 3700 µε/T and 0.458 mT, respectively.

scholarly journals A Wi-Fi-Based Wireless Indoor Position Sensing System with Multipath Interference Mitigation

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3983 ◽  
Author(s):  
Tuo Xie ◽  
Hanjun Jiang ◽  
Xijin Zhao ◽  
Chun Zhang
Keyword(s):  
Interference Mitigation ◽  
Low Cost ◽  
Propagation Delay ◽  
Experimental Results ◽  
Prototype System ◽  
Indoor Environments ◽  
Multipath Interference ◽  
Position Sensing ◽  
Sensing System ◽  
Depth Analysis

Wi-Fi-based indoor position sensing solutions have the advantages of easy integration in mobile phones and low cost by using existing Wi-Fi access points. The mainstream methods are commonly based on the received signal strength indicator (RSSI), which suffers from multipath interference in complicated indoor environments. Through the in-depth analysis of the multipath interference, an RSSI-assisted time difference of arrival (TDoA) method is proposed for Wi-Fi-based indoor position sensing in this work. The key idea is to compensate for the multipath interference in the received signals based on the coarse estimation using RSSI and TDoA calculation. A prototype system has been implemented to validate the proposed method. Experimental results have demonstrated the effectiveness of the proposed method, especially for handling the multipath interference with small propagation delay difference. Experimental results show that the indoor position sensing system can achieve a 90th percentile error of 0.3 m. The proposed method can also achieve moderate computational complexity and moderate real-time performance compared to other methods.

The Study of a MEMS Magnetic Field Sensor Based on “Cross-Shape” Ferromagnetic Film

2011 ◽  
Vol 694 ◽  
pp. 523-527 ◽  
Author(s):  
Qi Bin Lin ◽  
Guang Tao Du
Keyword(s):  
Magnetic Field ◽  
Low Cost ◽  
Ferromagnetic Film ◽  
Wheatstone Bridge ◽  
Diaphragm Thickness ◽  
Magnetic Field Sensors ◽  
Sensor Performance ◽  
Element Simulation ◽  
Field Sensor ◽  
The Magnetic Field

Novel magnetic field sensors are based on a “cross-shape” ferromagnetic film (FMF) attached to a silicon diaphragm and piezoresistive membrane. The interaction between the magnetic field and the (FMF) generates a deflection of the diaphragm, which changes the piezoresistance and unbalances a Wheatstone bridge. The effect of FMF and silicon diaphragm thickness on the sensor performance is studied by the finite element simulation. The performance of sensor can be improved by optimizing the size of “cross-shape” FMF. These low-cost, low-power sensors are easily integrated with electronic circuits.

Developing an Inkjet Printer I: RGB Image to CMY Ink Amounts - Image Processing and Color Management

2020 ◽  
Vol 2020 (15) ◽  
pp. 350-1-350-10
Author(s):  
Yin Wang ◽  
Baekdu Choi ◽  
Davi He ◽  
Zillion Lin ◽  
George Chiu ◽  
...  
Keyword(s):  
Image Processing ◽  
Low Cost ◽  
Experimental Results ◽  
Color Management ◽  
Finger Nail ◽  
Inkjet Printer ◽  
Rgb Image ◽  
Novel Algorithm

In this paper, we will introduce a novel low-cost, small size, portable nail printer. The usage of this system is to print any desired pattern on a finger nail in just a few minutes. The detailed pre-processing procedures will be described in this paper. These include image processing to find the correct printing zone, and color management to match the patterns’ color. In each phase, a novel algorithm will be introduced to refine the result. The paper will state the mathematical principles behind each phase, and show the experimental results, which illustrate the algorithms’ capabilities to handle the task.

Low‐cost direct instantaneous torque control for switched reluctance motors with bus current detection under soft‐chopping mode

2016 ◽  
Vol 9 (3) ◽  
pp. 482-490 ◽  
Author(s):  
Chun Gan ◽  
Jianhua Wu ◽  
Qingguo Sun ◽  
Shiyou Yang ◽  
Yihua Hu ◽  
...  
Keyword(s):  
Low Cost ◽  
Torque Control ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Current Detection

Experimental Results of SAR Imaging Using a Low-Cost X-band Radar with a PLL with Direct Modulation for UAV Applications

2021 ◽  
Author(s):  
Damian Gromek ◽  
Piotr Samczynski ◽  
Krzysztof Stasiak ◽  
Jakub Julczyk ◽  
Maciej Wielgo ◽  
...  
Keyword(s):  
Low Cost ◽  
Experimental Results ◽  
Direct Modulation ◽  
X Band ◽  
Sar Imaging

scholarly journals A Low-Cost Surge Current Detection Sensor with Predictive Lifetime Display Function for Maintenance of Surge Protective Devices

Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2310 ◽  
Author(s):  
Youngjun Lee ◽  
Young Sam Lee
Keyword(s):  
Liquid Crystal Display ◽  
Low Cost ◽  
Lightning Strike ◽  
Protective Device ◽  
Lcd Driver ◽  
Display Function ◽  
Duration Information ◽  
Toroidal Coil ◽  
Current Detection ◽  
Surge Current

In this study, a low-cost surge current detection sensor (SCDS) that can measure high current surges using a low-current toroidal coil is proposed for maintenance of a surge protective device (SPD). The proposed SCDS is designed to display the predicted lifetime of the SPD based on the magnitude of surge current and number of surges. In addition, a method for measuring high surge current using a toroidal coil that can usually measure only low current is proposed. A lightning strike counter consists of a microcontroller with a low-power liquid crystal display (LCD) driver, 3 VDC lithium battery, and signal conditioning circuit that converts amplitude information of the surge current into duration information of a negative pulse to facilitate processing in the microcontroller. In this paper, we propose a software algorithm that can calculate the remaining lifetime of SPD based on the amplitude and number of surge currents. There is also an option to select the capacity of the surge protective device and the number of phase lines, allowing it to assess the predicted lifetime for various types of Class II SPDs. The proposed SCDS is measured as 7.2 μA from the battery power consumption test, and the service life is calculated to be 11.1 years. It meets the International Standard IEC62561-6 test conditions of the lightning strike counter and is expected to be useful in the maintenance of SPDs and lightning protection systems.

scholarly journals Magnetic Communication Using High-Sensitivity Magnetic Field Detectors

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3415 ◽  
Author(s):  
Maurice Hott ◽  
Peter A. Hoeher ◽  
Sebastian F. Reinecke
Keyword(s):  
Magnetic Field ◽  
Mobile Applications ◽  
Data Communication ◽  
High Sensitivity ◽  
Magnetic Data ◽  
Receiver Coil ◽  
Magnetic Field Sensors ◽  
Resistive Sensor ◽  
Field Sensor ◽  
Multiple Detectors

In this article, an innovative approach for magnetic data communication is presented. For this purpose, the receiver coil of a conventional magneto-inductive communication system is replaced by a high-sensitivity wideband magnetic field sensor. The results show decisive advantages offered by sensitive magnetic field sensors, including a higher communication range for small receiver units. This approach supports numerous mobile applications where receiver size is limited, possibly in conjunction with multiple detectors. Numerical results are supported by a prototype implementation employing an anisotropic magneto-resistive sensor.

Research on Low-Cost Vanadium Alloying in Producing Vanadium-Containing Seismic Resistant Rebar

2013 ◽  
Vol 357-360 ◽  
pp. 893-896 ◽  
Author(s):  
Peng Tian ◽  
Zhi Yong Zhong ◽  
Rui Guo Bai ◽  
Xing Li Zhang ◽  
Chun Liang Han ◽  
...  
Keyword(s):  
Production Process ◽  
Low Cost ◽  
Experimental Results ◽  
Vanadium Slag ◽  
Vanadium Alloys ◽  
Intermediate Products ◽  
Conventional Production ◽  
Seismic Resistant

The interception products of vanadium processing as vanadium alloys were studied in producing vanadium-containing seismic resistant rebar. The experimental results show that vanadium alloying with intermediate products was feasible and low-cost. Compared with conventional production process or ferrovanadium alloying, applied vanadium slag alloying in producing HRB335E could save 12.45 RMB per ton of steel, applied vanadium ball alloying in producing HRB400E could save 21.23 RMB per ton of steel, applied V-iron alloying in producing HRB400E could save 11.06 RMB per ton of steel.

An efficient termination control strategy of air-vented dryer for fabric drying

2018 ◽  
Vol 30 (3) ◽  
pp. 412-427 ◽  
Author(s):  
Yuhui Wei ◽  
Zhaowei Su ◽  
Huashan Lu ◽  
Xue Mei Ding
Keyword(s):  
Energy Consumption ◽  
Control Strategy ◽  
Low Cost ◽  
Drying Time ◽  
Content Type ◽  
Exhaust Duct ◽  
Microscopic Damage ◽  
Novel Strategy ◽  
Drying Efficiency ◽  
Practical Implications

Purpose The purpose of this paper is to develop an efficient termination control strategy of air-vented dryer in term of energy saving, improving smoothness and reducing microscopic damage of fiber. Design/methodology/approach A simple, low cost termination control strategy is developed by testing the instantaneous humidity of exhaust air and then deducing the drying degree of fabric in process. The practicability evaluation of this novel strategy was investigated by using both experimental and mathematical approaches. The effect of termination control strategy on drying efficiency and fabric apparent properties were also discussed. Findings Termination control strategy significantly affects drying time, energy consumption, smoothness and microscopic of fiber. Specially, a novel termination control strategy that the combination of equilibrium moisture content of fabric in ambient environment and relative humidity of exhaust air in exhaust duct is workable and can save 25.2 percent of energy consumption, 26.7 percent of the drying time and improve 0.7 grade of the appearance smoothness, as well as significantly reduce the microscopic damage of fiber compare to the original control strategy of dryer. This indicates possible ways to minimize drying energy consumption and dryer damage by reducing unnecessary migrate out of the water from the clothes. Practical implications The paper is helpful in not only the development of new drying product but also the optimization of appearance smoothness of fabric after drying and reduce the microscopic damage of fiber. Originality/value A novel termination control strategy of dryer is applied to improve drying efficiency of dryer and reduce fabric damage.

Sign in / Sign up

Export Citation Format

Share Document