A Low Cost Polarized Navigation Sensor Design

2018 ◽  
Author(s):  
Yang Yang ◽  
Chen Hao ◽  
Cheng Nannan ◽  
Yan Yongzheng
Keyword(s):  
Low Cost ◽  
Sensor Design

scholarly journals A low-cost, human-like, high-resolution, tactile sensor based on optical fibers and an image sensor

2018 ◽  
Vol 15 (4) ◽  
pp. 172988141878363 ◽  
Author(s):  
Utku Büyükşahin ◽  
Ahmet Kırlı
Keyword(s):  
High Resolution ◽  
Spatial Resolution ◽  
Fiber Optic ◽  
Low Cost ◽  
Experimental Studies ◽  
Main Idea ◽  
Tactile Sensor ◽  
Image Sensor ◽  
Sensor Design ◽  
Tactile Sensors

Tactile sensors are commonly a coordinated group of receptors forming a matrix array meant to measure force or pressure similar to the human skin. Optic-based tactile sensors are flexible, sensitive, and fast; however, the human fingertip’s spatial resolution, which can be regarded as the desired spatial resolution, still could not be reached because of their bulky nature. This article proposes a novel and patented optic-based tactile sensor design, in which fiber optic cables are used to increase the number of sensory receptors per square centimeter. The proposed human-like high-resolution tactile sensor design is based on simple optics and image processing techniques, and it enables high spatial resolution and easy data acquisition at low cost. This design proposes using the change in the intesity of the light occured due to the deformation on contact/measurement surface. The main idea is using fiber optic cables as the afferents of the human physiology which can have 9 µm diameters for both delivering and receiving light beams. The variation of the light intensity enters sequent mathematical models as the input, then, the displacement, the force, and the pressure data are evaluated as the outputs. A prototype tactile sensor is manufactured with 1-mm spatial and 0.61-kPa pressure measurement resolution with 0–15.6 N/cm2 at 30 Hz sampling frequency. Experimental studies with different scenarios are conducted to demonstrate how this state-of-the-art design worked and to evaluate its performance. The overall accuracy of the first prototype, based on different scenarios, is calculated as 93%. This performance is regarded as promising for further developments and applications such as grasp control or haptics.

scholarly journals A Novel Capacitive Sensing Principle for Microdevices

2015 ◽  
Author(s):  
Jian Zhou ◽  
Ronald N. Miles ◽  
Shahrzad Towfighian
Keyword(s):  
Electric Field ◽  
Driving Force ◽  
Design Principle ◽  
Electrostatic Force ◽  
Low Cost ◽  
Repulsive Force ◽  
Attractive Force ◽  
Sensor Design ◽  
Capacitive Sensing

Conventional capacitive sensing places significant limitations on the sensor design due to the pull-in instability caused by the electrostatic force. The main purpose of this study is to examine a low-cost novel capacitive sensing principle based on electrostatic balance which promises to avoid these design limitations. The approach uses an asymmetric electric field on a structure with fingers that can generate a repulsive force while the gap is low and create an attractive force while the gap is large. The size and thickness of the fingers are also responsible for creating repulsive or attractive forces on the structure. This approach has recently been applied successfully in the design of capacitive actuators to provide a repulsive driving force. A new design principle for capacitive sensing is described that avoids pull-in instability by designing the fingers such that the structure is at the equilibrium.

Arrow-Pointer Sensor Design for Low-Cost Water Meter

2013 ◽  
Vol 13 (4) ◽  
pp. 1281-1287 ◽  
Author(s):  
Shih-Chang Hsia ◽  
Ming-Hwa Sheu ◽  
Yu-Jui Chang
Keyword(s):  
Low Cost ◽  
Sensor Design ◽  
Water Meter

scholarly journals A method for recording ice ablation using a low-cost ultrasonic rangefinder

2012 ◽  
Vol 58 (209) ◽  
pp. 565-568 ◽  
Author(s):  
M. Len Keeler ◽  
Keith A. Brugger
Keyword(s):  
Environmental Factors ◽  
Speed Of Sound ◽  
Low Cost ◽  
Effective Means ◽  
Cost Effective ◽  
Low Density ◽  
Sensor Design ◽  
Fixed Target ◽  
Spatial Coverage ◽  
Manual Methods

AbstractWe have adapted inexpensive ultrasonic rangefinders to measure ablation rates on the surface of a glacier. While ultrasonic rangers are commercially available for this purpose, our goal was to utilize rangefinders typically used in hobby robotics without significantly compromising performance. To correct for environmental factors that affect the speed of sound we use two ultrasonic rangefinders, one focused on a fixed target. Measurements of ablation correlate well with manual measurements with an uncertainty of about ±3 cm, suggesting an accuracy comparable with other non-manual methods of recording ablation. The limitations of our rangefinder include those inherent in commercially available units as well as having less acoustical power, which results in a reduced effective range of the sensor (~2 m) and difficulties in detecting surfaces lying below low-density snow. Our sensor design provides a cost-effective means of increasing the spatial coverage of ice ablation measurements.

A low-cost millimeter-wave whispering gallery-mode-based sensor: design considerations and accurate analysis

2012 ◽  
Vol 4 (3) ◽  
pp. 341-348 ◽  
Author(s):  
Aidin Taeb ◽  
Mohammad Neshat ◽  
Suren Gigoyan ◽  
Safieddin Safavi-Naeini
Keyword(s):  
Millimeter Wave ◽  
Variational Analysis ◽  
Dielectric Waveguide ◽  
Low Cost ◽  
Whispering Gallery Mode ◽  
Sensor Design ◽  
Analysis Method ◽  
Accurate Analysis ◽  
Whispering Gallery ◽  
Design Considerations

A dielectric waveguide-based structure coupled to a whispering gallery mode (WGM) disc resonator is introduced as a low-cost integrable millimeter-wave (mm-wave) bio-sensor. An efficient variational analysis method is developed and applied to the WGM. Three sets of sensors, operating in different ranges of frequency from 85 to 220 GHz, are fabricated and tested. The performance of the fabricated bio-sensor is demonstrated for sensing different concentrations of glucose solution samples at D-band. Also, the sensitivity, selectivity, and repeatability of these sensors are examined.

scholarly journals POIS, a Low Cost Tilt and Position Sensor: Design and First Tests

Sensors ◽  
2015 ◽  
Vol 15 (5) ◽  
pp. 10806-10824 ◽  
Author(s):  
Giuseppe Artese ◽  
Michele Perrelli ◽  
Serena Artese ◽  
Sebastiano Meduri ◽  
Natale Brogno
Keyword(s):  
Low Cost ◽  
Sensor Design ◽  
Position Sensor
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