On-line detection of bridging and delay faults in functional blocks of CMOS self-checking circuits

1997 ◽  
Vol 16 (7) ◽  
pp. 770-776 ◽  
Author(s):  
C. Metra ◽  
M. Favalli ◽  
P. Olivo ◽  
B. Ricco
Keyword(s):  
Line Detection ◽  
Delay Faults ◽  
On Line ◽  
Functional Blocks

UNIFIED TECHNIQUE FOR ON-LINE TESTING OF DIGITAL CIRCUITS: DELAY AND STUCK-AT FAULT MODELS

2008 ◽  
Vol 17 (06) ◽  
pp. 1069-1089 ◽  
Author(s):  
S. BISWAS ◽  
S. MUKHOPADHYAY ◽  
A. PATRA ◽  
D. SARKAR
Keyword(s):  
Cell Count ◽  
Digital Circuits ◽  
Deep Submicron ◽  
Line Detection ◽  
Delay Faults ◽  
Fault Models ◽  
Bridging Faults ◽  
Area Overhead ◽  
Transition Faults ◽  
On Line

This work is concerned with the development of generic, nonintrusive, and flexible algorithms for the design of digital circuits with on-line testing (OLT) capability. Most of the works presented in the literature on OLT have used single stuck at (s - a) fault models. However, in the deep submicron technology, single s - a fault models may not capture more than a fraction of the real defects. To cater to the problem it is now advocated that additional fault models such as bridging faults, transition faults, delay faults, etc., are also used. The proposed technique is one of the first works that facilitates a unified scheme for on-line detection of delay faults and s - a faults with a high value of n for n-Detect tests. The technique can handle generic digital circuits with cell count as high as 15,000 and having the order of 2500 states. Results for the design of on-line detectors for various ISCAS89 benchmark circuits are provided. The results illustrate that with marginal increase in the area overhead, if compared to the ones with single s - a fault coverage only, the proposed scheme also provides coverage for the delay faults.

Development of Glucose On-line Detection System for Fermentation Process

2013 ◽  
Vol 40 (12) ◽  
pp. 1945-1949
Author(s):  
Xue-Jin GAO ◽  
Guang-Sheng LIU ◽  
Li CHENG ◽  
Ling-Xiao GENG ◽  
Ji-Xing XUE ◽  
...  
Keyword(s):  
Fermentation Process ◽  
Detection System ◽  
Line Detection ◽  
On Line

Research Situation Analysis of On-line Detection Technology for Power Transformer Winding Deformation

2020 ◽  
Vol 13 (6) ◽  
pp. 823-832
Author(s):  
Zhenhua Li ◽  
Weihui Jiang ◽  
Li Qiu ◽  
Zhenxing Li ◽  
Yanchun Xu
Keyword(s):  
Detection Method ◽  
Theoretical Research ◽  
Line Detection ◽  
Response Analysis ◽  
Advantages And Disadvantages ◽  
Detection Technology ◽  
The Future ◽  
Transformer Winding ◽  
On Line ◽  
Winding Deformation

Background: Winding deformation is one of the most common faults in power transformers, which seriously threatens the safe operation of transformers. In order to discover the hidden trouble of transformer in time, it is of great significance to actively carry out the research of transformer winding deformation detection technology. Methods: In this paper, several methods of winding deformation detection with on-line detection prospects are summarized. The principles and characteristics of each method are analyzed, and the advantages and disadvantages of each method as well as the future research directions are expounded. Finally, aiming at the existing problems, the development direction of detection method for winding deformation in the future is prospected. Results: The on-line frequency response analysis method is still immature, and the vibration detection method is still in the theoretical research stage. Conclusion: The ΔV − I1 locus method provides a new direction for on-line detection of transformer winding deformation faults, which has certain application prospects and practical engineering value.

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