Projected fringe profilometry of a high speed moving object using a time delay and integration imaging

2007 ◽  
Author(s):  
Yanming Chen ◽  
Yuming He ◽  
Eryi Hu ◽  
Changhong Ai
Keyword(s):  
Time Delay ◽  
High Speed ◽  
Moving Object ◽  
Time Delay And Integration

High-speed web inspection using intelligent time delay and integration (TDI) cameras

1994 ◽  
Author(s):  
James W. Roberts ◽  
S. D. Rose ◽  
Graham A. Jullien ◽  
Lee T. Nichols ◽  
P. Tom Jenkins ◽  
...  
Keyword(s):  
Time Delay ◽  
High Speed ◽  
Web Inspection ◽  
Time Delay And Integration

Time delay and integration image sensor with high-speed output architecture

1998 ◽  
Author(s):  
Gareth P. Weale ◽  
Colin J. Flood ◽  
Douglas R. Dykaar
Keyword(s):  
Time Delay ◽  
High Speed ◽  
Image Sensor ◽  
Time Delay And Integration

Simulation on the Regulating Characteristics of the Pulse Modulation Hydraulic Hammer

2011 ◽  
Vol 422 ◽  
pp. 176-183
Author(s):  
Gang Wang ◽  
Yu Wan Cen
Keyword(s):  
Time Delay ◽  
Simulation Model ◽  
Impact Energy ◽  
High Speed ◽  
Impact Frequency ◽  
Pulse Modulation ◽  
Motion Equations ◽  
Hydraulic Hammer ◽  
Working Frequency ◽  
Simulation Results

To improve the regulating characteristics of impact energy, simplify structure of hydraulic hammer, a new pulse modulation hydraulic hammer is presented in the paper which can help regulate its impact frequency easily. The motion equations of the hydraulic hammer are established, its simulation model is obtained and the dynamic simulation is carried out on AMESim. The dynamics of high-speed ON/OFF valve is taken into account in the simulation model. The tendency of simulation results conforms to experimental results; it shows that the pulse modulation hydraulic hammer is feasible, and the hydraulic hammer model is reasonable. The time delay in high working frequency is also analyzed.

scholarly journals Frequency Controlled Noise Cancellation for Audio and Hearing Purposes

2020 ◽  
Vol 8 (1) ◽  
pp. 270-290
Author(s):  
Ali O. Abid Noor
Keyword(s):  
Time Delay ◽  
Power Consumption ◽  
Hearing Aids ◽  
High Speed ◽  
Hearing Aid ◽  
External Noise ◽  
Noise Cancellation ◽  
Audio Signals ◽  
Real Time Processing ◽  
Full Band

Methods for hearing aids sought to compensate for loss in hearing by amplifying signals of interest in the audio band. In real-world, audio signals are prone to outdoor noise which can be destructive for hearing aid.  Eliminating interfering noise at high speed and low power consumption became a target for recent researches. Modern hearing compensation technologies use digital signal processing which requires minimum implementation costs to reduce power consumption, as well as avoiding delay in real time processing. In this paper, frequency controlled noise cancellation (FCNC) strategy for hearing aid and audio communication is developed with low complexity and least time delay. The contribution of the current work is made by offering a method that is capable of removing inherent distortion due filter-bank insertion and assigning adaptive filtering to a particular sub-band to remove external noise. The performance of the proposed FCNC was examined under frequency-limited noise, which corrupts particular parts of the audio spectrum. Results showed that the FCNC renders noise-immune audio signals with minimal number of computations and least delay. Mean square error (MSE) plots of the proposed FCNC method reached below -30 dB compared to -25 dB using conventional sub-band method and to -10 dB using standard full-band noise canceller. The proposed FCNC approach gave the lowest number of computations compared to other methods with a total of 346 computations per sample compared to 860 and 512 by conventional sub-band and full-band methods respectively. The time delay using FCNC is the least compared to the other methods.

Design of Equivalent Sampling Based on Printed Circuit Board Suited for Power Communication System

2013 ◽  
Vol 333-335 ◽  
pp. 465-471
Author(s):  
Chuan Liu ◽  
Zhi Chao Huang ◽  
Peng Wu ◽  
Lei Chen ◽  
Wei Wang
Keyword(s):  
Time Delay ◽  
Communication System ◽  
High Speed ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Transmission Time ◽  
Clock Signal ◽  
Signal Delay ◽  
Printed Circuit ◽  
Sequential Logic

Many applications in Power communication system have a demand of adjustable transmission time delay of high-speed signal. In sequential logic circuit, the control of transmission time delay of high-speed signal can effectively improve the accuracy of clock sampling, as a result, satisfy the constraints between clock signal and periodic data. A method of equivalent sampling based on printed circuit board (PCB) is provided in the article, it realizes equivalent sampling of the data by fixing a group of clock signal delay, thus, increase the accuracy of sampling.

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