Demonstration abstract: An 8×8 mm2Bluetooth Low Energy wireless motion-sensing platform

2014 ◽  
Author(s):  
Tong Kun Lai ◽  
Anping Wang ◽  
Chun-Min Chang ◽  
Hua-Min Tseng ◽  
Kailing Huang ◽  
...  
Keyword(s):  
Low Energy ◽  
Motion Sensing ◽  
Sensing Platform

scholarly journals Fabrication of Polymer Nanofiber-Conducting Polymer Fabric and Noncontact Motion Sensing Platform

2018 ◽  
Vol 915 ◽  
pp. 207-212
Author(s):  
Mustafa Umut Mutlu ◽  
Osman Akin ◽  
Mustafa M. Demir ◽  
Ümit Hakan Yildiz
Keyword(s):  
Electrostatic Interactions ◽  
Conductive Polymer ◽  
Sensor Technology ◽  
Wearable Sensor ◽  
Motion Sensing ◽  
Free Standing ◽  
Sensing Platform ◽  
Sensor Platform ◽  
Polymer Nanofiber ◽  
Device Miniaturization

Conductive polymer-electrospun polymer nanofiber network was combined to host iron oxide nanoparticles providing micrometer thick sensing interface. The sensor has fabricated as free-standing fabric exhibiting 10 to 100 KOhm base resistivity upon bias applied. The moving object has been sensed through the electrostatic interactions between fibers and object. The sensing range has been found to be 1-5 cm above the surface of fabric. By the controlled combination of conductive polymers electrospun polymer nanofibers effective device miniaturization has been provided without loss of performance. The noncontact motion sensor platform has unique flexibility and light weight holding a potential for wearable sensor technology.

scholarly journals The Use of Underwater Gliders as Acoustic Sensing Platforms

2019 ◽  
Vol 9 (22) ◽  
pp. 4839
Author(s):  
Cheng Jiang ◽  
JianLong Li ◽  
Wen Xu
Keyword(s):  
Energy Consumption ◽  
Target Detection ◽  
Large Scale ◽  
Transmission Loss ◽  
Low Energy ◽  
Acoustic Sensing ◽  
Underwater Acoustic ◽  
Underwater Gliders ◽  
Sensing Platform ◽  
Low Energy Consumption

Underwater gliders travel through the ocean by buoyancy control, which makes their motion silent and involves low energy consumption. Due to those advantages, numerous studies on underwater acoustics have been carried out using gliders and different acoustic payloads have been developed. This paper aims to illustrate the use of gliders in underwater acoustic observation and target detection through experimental data from two sea trials. Firstly, the self-noise of the glider is analyzed to illustrate its feasibility as an underwater acoustic sensing platform. Then, the ambient noises collected by the glider from different depths are presented. By estimating the transmission loss, the signal receiving ability of the glider is assessed, and a simulation of target detection probability is performed to show the advantages of the glider over other underwater vehicles. Moreover, an adaptive line enhancement is presented to further reduce the influence of self-noise. Meanwhile, two hydrophones are mounted at both ends of the glider to form a simple array with a large aperture and low energy consumption. Thus, the target azimuth estimation is verified using broadband signals, and a simple scheme to distinguish the true angle from the port‒starboard ambiguity is presented. The results indicate that the glider does have advantages in long-term and large-scale underwater passive sensing.

scholarly journals SenStick: Comprehensive Sensing Platform with an Ultra Tiny All-In-One Sensor Board for IoT Research

2017 ◽  
Vol 2017 ◽  
pp. 1-16 ◽  
Author(s):  
Yugo Nakamura ◽  
Yutaka Arakawa ◽  
Takuya Kanehira ◽  
Masashi Fujiwara ◽  
Keiichi Yasumoto
Keyword(s):  
Case Studies ◽  
Activity Recognition ◽  
Flash Memory ◽  
Data Analytics ◽  
User Study ◽  
Low Energy ◽  
Rechargeable Battery ◽  
Bluetooth Low Energy ◽  
Sensing Platform ◽  
Case Data

We propose a comprehensive sensing platform called SenStick, which is composed of hardware (ultra tiny all-in-one sensor board), software (iOS, Android, and PC), and 3D case data. The platform aims to allow all the researchers to start IoT research, such as activity recognition and context estimation, easily and efficiently. The most important contribution is the hardware that we have designed. Various sensors often used for research are embedded in an ultra tiny board with the size of 50 mm (W) × 10 mm (H) × 5 mm (D) and weight around 3 g including a battery. Concretely, the following sensors are embedded on this board: acceleration, gyro, magnetic, light, UV, temperature, humidity, and pressure. In addition, this board has BLE (Bluetooth low energy) connectivity and capability of a rechargeable battery. By using 110 mAh battery, it can run more than 15 hours. The most different point from other similar boards is that our board has a large flash memory for logging all the data without a smartphone. By using SenStick, all the users can collect various data easily and focus on IoT data analytics. In this paper, we introduce SenStick platform and some case studies. Through the user study, we confirmed the usefulness of our proposed platform.

Collaborative Game-Based Learning with Motion-Sensing Technology

2017 ◽  
Vol 7 (4) ◽  
pp. 53-64 ◽  
Author(s):  
Cheng-Yu Hung ◽  
Yu-Ren Lin ◽  
Kai-Yi Huang ◽  
Pao-Ta Yu ◽  
Jerry Chih-Yuan Sun
Keyword(s):  
Education Institution ◽  
Higher Learning ◽  
Learning Motivation ◽  
Game Based Learning ◽  
Motion Sensing ◽  
Sensing Technology ◽  
Sensing Platform ◽  
Collaborative Game ◽  
Player Game ◽  
Southern Taiwan

The purpose of this study was to compare the influence of a single-player game with that of a collaborative game on students' motivation, attention levels, and relaxation levels in a motion-sensing learning environment. Participants were 20 college students in a higher education institution in southern Taiwan. A Kinect-based game with motion-sensing technology was incorporated to help the students enhance their attention levels and reduce their anxiety. Results showed that when the students worked collaboratively, they achieved higher learning motivation. In addition, brainwave data revealed that during the gaming activities, the students' attention levels in both conditions increased. It is suggested that instructors can incorporate collaborative learning environments with a Kinect motion-sensing platform to enhance students' learning motivation.

scholarly journals THE ANALYSIS OF SENSORY PLATFORM FOR USE IN THE INTERNET OF THINGS

2017 ◽  
Vol 7 (3) ◽  
pp. 103-106
Author(s):  
Tomasz Zieliński
Keyword(s):  
Internet Of Things ◽  
Low Energy ◽  
The Internet ◽  
Literature Study ◽  
Bluetooth Low Energy ◽  
Sensor Platforms ◽  
Sensing Platform ◽  
Sensor Platform ◽  
Hub Model ◽  
The Internet Of Things

The main purpose of the work was to analyze sensory platform solutions for use on the Internet of Things. Emphasis was placed on the literature study on Sensor Platforms, Internet of Things, Bluetooth Low Energy Communication Protocol, serial digital and analog interfaces most commonly used in sensory platforms. Analysis of sensory platform solutions was carried out in terms of their functionality and efficiency. The SensorTag CC2650 sensing platform by Texas Instruments, turned out to be the best and has been used to build the hub model. The hub model was based on hardware and software implementation, which resulted in the expansion of the sensor platform with 6 additional analog inputs and a Bluetooth Low Energy data transmission profile. Testing the correctness of the software produced in the laboratory environment has made it possible to determine the correct functioning of the concentrator model.

Dissociated Σ=27 boundaries in silicon

1988 ◽  
Vol 46 ◽  
pp. 624-625
Author(s):  
A. Garg ◽  
W.A.T. Clark ◽  
J.P. Hirth
Keyword(s):  
Electron Diffraction ◽  
Local Minimum ◽  
Boundary Energy ◽  
Coincidence Site Lattice ◽  
Boundary Plane ◽  
Low Energy ◽  
Theoretical Understanding ◽  
Site Lattice ◽  
Kikuchi Pattern ◽  
Analysis Techniques

In the last twenty years, a significant amount of work has been done in the theoretical understanding of grain boundaries. The various proposed grain boundary models suggest the existence of coincidence site lattice (CSL) boundaries at specific misorientations where a periodic structure representing a local minimum of energy exists between the two crystals. In general, the boundary energy depends not only upon the density of CSL sites but also upon the boundary plane, so that different facets of the same boundary have different energy. Here we describe TEM observations of the dissociation of a Σ=27 boundary in silicon in order to reduce its surface energy and attain a low energy configuration.The boundary was identified as near CSL Σ=27 {255} having a misorientation of (38.7±0.2)°/[011] by standard Kikuchi pattern, electron diffraction and trace analysis techniques. Although the boundary appeared planar, in the TEM it was found to be dissociated in some regions into a Σ=3 {111} and a Σ=9 {122} boundary, as shown in Fig. 1.

Transfer optics for high spatial resolution electron spectroscopy

1988 ◽  
Vol 46 ◽  
pp. 666-667
Author(s):  
G. G. Hembree ◽  
Luo Chuan Hong ◽  
P.A. Bennett ◽  
J.A. Venables
Keyword(s):  
Magnetic Field ◽  
Scanning Transmission Electron Microscope ◽  
Low Energy ◽  
Objective Lens ◽  
State University ◽  
Arizona State University ◽  
Initial Field ◽  
Resolution Electron ◽  
Scanning Transmission ◽  
Low Energy Electrons

A new field emission scanning transmission electron microscope has been constructed for the NSF HREM facility at Arizona State University. The microscope is to be used for studies of surfaces, and incorporates several surface-related features, including provision for analysis of secondary and Auger electrons; these electrons are collected through the objective lens from either side of the sample, using the parallelizing action of the magnetic field. This collimates all the low energy electrons, which spiral in the high magnetic field. Given an initial field Bi∼1T, and a final (parallelizing) field Bf∼0.01T, all electrons emerge into a cone of semi-angle θf≤6°. The main practical problem in the way of using this well collimated beam of low energy (0-2keV) electrons is that it is travelling along the path of the (100keV) probing electron beam. To collect and analyze them, they must be deflected off the beam path with minimal effect on the probe position.

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