Eye-position detection system

2000 ◽  
Author(s):  
Holger Heidrich ◽  
Armin Schwerdtner ◽  
Andreas Glatte ◽  
Hartmut Mix
Keyword(s):  
Detection System ◽  
Eye Position ◽  
Position Detection

Real-Time Measurement of Ion Energies for Heavy Ions

2016 ◽  
Vol 698 ◽  
pp. 157-162
Author(s):  
Akihito Yokoyama ◽  
Wataru Kada ◽  
Takahiro Satoh ◽  
Masashi Koka ◽  
Yuya Yokota ◽  
...  
Keyword(s):  
Real Time ◽  
Heavy Ions ◽  
Ion Irradiation ◽  
Detection System ◽  
Objective Lens ◽  
Charge Coupled Device ◽  
Annealing Conditions ◽  
Real Time Measurement ◽  
Position Detection ◽  
Time Position

A real-time position detection system is developed for measuring heavy ions with low fluence and energy of several hundred MeV, which are generated from an azimuthally varying field (AVF) cyclotron accelerator. We investigate the photoluminescence of α-Al2O3 single crystals implanted with Eu (Al2O3:Eu), which is used in the detection system. The Al2O3:Eu scintillators with a fluence of 3.0 × 1016 cm−2 are annealed at 500–900°C. The annealing conditions required for the Al2O3:Eu scintillators to obtain the maximum luminescence are 0.5 h at 600°C. The scintillator is placed on the AVF cyclotron target stage under atmospheric pressure and is irradiated by 260-MeV Ne. An inverted confocal microscope with a ×10 objective lens is positioned behind the Al2O3:Eu scintillator, and the luminescent images during ion irradiation are obtained by a position-sensitive camera unit with a 512 × 512 pixel electron multiplying charge-coupled device. The images indicate that our online measurement system has a sufficient spatial resolution, since the luminous diameter induced by irradiation with 190 ions /s is almost the same as that of the microbeam.

scholarly journals Research on the Weld Position Detection Method for Sandwich Structures from Face-Panel Side Based on Backscattered X-ray

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3198 ◽  
Author(s):  
Angang Wei ◽  
Baohua Chang ◽  
Boce Xue ◽  
Guodong Peng ◽  
Dong Du ◽  
...  
Keyword(s):  
Detection Method ◽  
Sandwich Structures ◽  
Detection System ◽  
High Reliability ◽  
Sandwich Panels ◽  
Experimental System ◽  
Maximum Absolute Error ◽  
X Ray ◽  
Position Detection ◽  
The Face

Web-core sandwich panels are a typical lightweight structure utilized in a variety of fields, such as naval, aviation, aerospace, etc. Welding is considered as an effective process to join the face panel to the core panel from the face panel side. However, it is difficult to locate the joint position (i.e., the position of core panel) due to the shielding of the face panel. This paper studies a weld position detection method based on X-ray from the face panel side for aluminum web-core sandwich panels used in aviation and naval structures. First, an experimental system was designed for weld position detection, able to quickly acquire the X-ray intensity signal backscattered by the specimen. An effective signal processing method was developed to accurately extract the characteristic value of X-ray intensity signals representing the center of the joint. Secondly, an analytical model was established to calculate and optimize the detection parameters required for detection of the weld position of a given specimen by analyzing the relationship between the backscattered X-ray intensity signal detected by the detector and the parameters of the detection system and specimen during the detection process. Finally, several experiments were carried out on a 6061 aluminum alloy specimen with a thickness of 3 mm. The experimental results demonstrate that the maximum absolute error of the detection was 0.340 mm, which is sufficiently accurate for locating the position of the joint. This paper aims to provide the technical basis for the automatic tracking of weld joints from the face panel side, required for the high-reliability manufacturing of curved sandwich structures.

Design and Implementation of a High-Speed Real-Time Position Detection System in Electromagnetic Coil Launcher

2020 ◽  
Vol 48 (9) ◽  
pp. 3203-3210
Author(s):  
Guan Xiao Cun ◽  
Shuai Wang ◽  
Denghua Guo ◽  
Shaohua Guan ◽  
Baolong Liu ◽  
...  
Keyword(s):  
Real Time ◽  
High Speed ◽  
Detection System ◽  
Electromagnetic Coil ◽  
Design And Implementation ◽  
Position Detection ◽  
Time Position

Downsizing of LC Markers for a Wireless Magnetic Position Detection System

2013 ◽  
Vol 11 (1) ◽  
pp. 98-101
Author(s):  
S. Hashi ◽  
S. Yabukami ◽  
K. Ishiyama ◽  
K. I. Arai
Keyword(s):  
Detection System ◽  
Position Detection

scholarly journals Simulation model for a silicon Hall sensor in an absolute digital position detection system

1986 ◽  
Vol 29 (5) ◽  
pp. 579-584 ◽  
Author(s):  
F.A. Pronk ◽  
J.P.J. Groenland ◽  
T.S.J. Lammerink
Keyword(s):  
Simulation Model ◽  
Detection System ◽  
Hall Sensor ◽  
Position Detection
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