On-chip short-time interval measurement system for high-speed signal timing characterization

Analog interpolation is the key technology of high-resolution short time-interval measurement. This study proposes a double interpolation method in time-interval measurement. The technique greatly improves the resolution of the analog time expander, which is based on the principle of charging and discharging of the capacitor. This method can significantly reduce the interpolation time, effectively solve the conflict between high measurement resolution and fast measurement rate. The principle of the time measurement expander based on double interpolation method is described in this paper and compared with the expander based on single interpolation method. Its measurement error is also analyzed in this study.

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Micro-Expression Recognition using 3D - CNN

10.54216/fpa.010101 ◽

2020 ◽

pp. 5-13

Author(s):

Vishal Dubey ◽

◽

Bhavya Takkar ◽

...

Keyword(s):

Emotional Response ◽

High Speed ◽

Actual State ◽

Time Interval ◽

Short Time Interval ◽

Expression Recognition ◽

Specific Emotion ◽

3D Cnn ◽

Short Time ◽

Micro Expression

Micro-expression comes under nonverbal communication, and for a matter of fact, it appears for minute fractions of a second. One cannot control micro-expression as it tells about our actual state emotionally, even if we try to hide or conceal our genuine emotions. As we know that micro-expressions are very rapid due to which it becomes challenging for any human being to detect it with bare eyes. This subtle-expression is spontaneous, and involuntary gives the emotional response. It happens when a person wants to conceal the specific emotion, but the brain is reacting appropriately to what that person is feeling then. Due to which the person displays their true feelings very briefly and later tries to make a false emotional response. Human emotions tend to last about 0.5 - 4.0 seconds, whereas micro-expression can last less than 1/2 of a second. On comparing micro-expression with regular facial expressions, it is found that for micro-expression, it is complicated to hide responses of a particular situation. Micro-expressions cannot be controlled because of the short time interval, but with a high-speed camera, we can capture one's expressions and replay them at a slow speed. Over the last ten years, researchers from all over the globe are researching automatic micro-expression recognition in the fields of computer science, security, psychology, and many more. The objective of this paper is to provide insight regarding micro-expression analysis using 3D CNN. A lot of datasets of micro-expression have been released in the last decade, we have performed this experiment on SMIC micro-expression dataset and compared the results after applying two different activation functions.

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An application of the Precision Time synchronization Protocol in a time-interval measurement system

29th Conference on Precision Electromagnetic Measurements (CPEM 2014) ◽

10.1109/cpem.2014.6898305 ◽

2014 ◽

Author(s):

Te-Kwei Wang ◽

Shinn-Yan Lin

Keyword(s):

Measurement System ◽

Time Synchronization ◽

Time Interval ◽

Interval Measurement ◽

Precision Time ◽

Time Interval Measurement ◽

Synchronization Protocol

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Time interval measurement module implemented in SoC FPGA device

International Journal of Electronics and Telecommunications ◽

10.1515/eletel-2016-0032 ◽

2016 ◽

Vol 62 (3) ◽

pp. 237-246 ◽

Cited By ~ 1

Author(s):

Grzegorz Grzęda ◽

Ryszard Szplet

Keyword(s):

Mass Measurement ◽

Measurement Data ◽

Measurement Instrument ◽

General Concept ◽

Time Interval ◽

Processing Unit ◽

Test Results ◽

Interval Measurement ◽

Time Interval Measurement ◽

On Chip

Abstract We presents the design and test results of a picosecond-precision time interval measurement module, integrated as a System-on-Chip in an FPGA device. Implementing a complete measurement instrument of a high precision in one chip with the processing unit gives an opportunity to cut down the size of the final product and to lower its cost. Such approach challenges the constructor with several design issues, like reduction of voltage noise, propagating through power lines common for the instrument and processing unit, or establishing buses efficient enough to transport mass measurement data. The general concept of the system, design hierarchy, detailed hardware and software solutions are presented in this article. Also, system test results are depicted with comparison to traditional ways of building a measurement instrument.

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