Applying System Theory to Transient Fault Tolerance and Safety Enhancement of Tunnel Construction Wireless Monitoring and Control System

2011 ◽  
Vol 204-210 ◽  
pp. 1370-1377 ◽  
Author(s):  
Xiong Feng Huang ◽  
Chun Jie Zhou ◽  
Yuan Qing Qing ◽  
Ye Wang ◽  
Ming Yue Yang

Transient faults are hard to be detected and located due to their unpredictable nature and short duration, and they are the dominant causations of system failures, which makes it necessary to consider transient fault-tolerant design in the development of modern safety-critical industrial system. In this paper an approach based on system theory is proposed to tolerate the transient faults in tunnel construction wireless monitoring and control systems (TCWMCS), in which the effects of transient faults are expressed by dysfunction of interactions among software applications. After analyzing the dysfunctional interactions of the system by the operational process model and educing the causes of dysfunction in the functional control diagram, a safety enhancement way was proposed for the designers, in which effictive safety constraints were set up to tolerate the transient faults. The experiment evaluation indicated that the effects of transient faults could be exposed by the causal factors of dysfunctional interactions and system safety could be enhanced by the enforcement of appropriate constraints.

2011 ◽  
Vol 6 (10) ◽  
Author(s):  
Xiongfeng Huang ◽  
Chunjie Zhou ◽  
Yuanqing Qin ◽  
Ye Wang ◽  
Mingyue Yang

Author(s):  
Himanshu Shekhar, Prof. Deepa Gianchandani

In the complex advance microelectronics based system, handling units are managing gadgets of littler size, which are delicate to the transient faults. A framework should be fabricated that will perceive the presence of faults and fuses strategies to will endure these faults without troublesome the typical activity A transient fault happens in a circuit caused by the electromagnetic commotions, astronomical beams, crosstalk and power supply clamor. It is extremely hard to recognize these faults amid disconnected testing. Subsequently a region effective fault tolerant full adder for testing and fixing of transient and changeless faults happened in single and multi-net is proposed. Furthermore, the proposed design can likewise identify and fix perpetual faults. This structure acquires much lower equipment overheads with respect to the conventional equipment design. In this paper, talk about various fault tolerant methodology for CMOS and ICs.


Author(s):  
Víctor PEREZ-GARCIA ◽  
Joel QUINTANILLA-DOMINGUEZ ◽  
Israel YAÑEZ-VARGAS ◽  
José AGUILERA-GONZALEZ

This paper describes the design and development of a Graphical User Interface through the virtual instrumentation software NI LabVIEW using the VISA function, to graphically visualize and storage the data of the climatological variables of temperature and relative humidity. The graphical interface offers the option to export the date, time and data of the two variables to text documents with extension “.txt”, which acquires the information of the electronic board wireless monitoring and control, which uses a main device PIC16F877A microcontroller. AMT1001 Precision Analog Sensor was used to sense temperature and relative humidity. The PIC16F877A was programmed using a C programming language in the CCS Compiler compiler, to the data acquisition, and send it via RS232 communication to the computer, using the PL2303 module USB to TTL converter. To check the GUI operation, the electronic wireless monitoring and control card was connected to the computer equipment by wire, however, the monitoring of the climate variables can be done wirelessly by XBEE technology. Future work aims to monitor the climate of a horticultural greenhouse with XBBE technology, so that the data is sent wirelessly to a computer that has the GUI, and is also connected to Ethernet or WIFI, which will have the LabVIEW graphical interface explained in this article, and the data will be displayed / analyzed through the internet.


Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3430 ◽  
Author(s):  
Roberto Casado-Vara ◽  
Zita Vale ◽  
Javier Prieto ◽  
Juan Corchado

The monitoring of the Internet of things networks depends to a great extent on the availability and correct functioning of all the network nodes that collect data. This network nodes all of which must correctly satisfy their purpose to ensure the efficiency and high quality of monitoring and control of the internet of things networks. This paper focuses on the problem of fault-tolerant maintenance of a networked environment in the domain of the internet of things. Based on continuous-time Markov chains, together with a cooperative control algorithm, a novel feedback model-based predictive hybrid control algorithm is proposed to improve the maintenance and reliability of the internet of things network. Virtual sensors are substituted for the sensors that the algorithm predicts will not function properly in future time intervals; this allows for maintaining reliable monitoring and control of the internet of things network. In this way, the internet of things network improves its robustness since our fault tolerant control algorithm finds the malfunction nodes that are collecting incorrect data and self-correct this issue replacing malfunctioning sensors with new ones. In addition, the proposed model is capable of optimising sensor positioning. As a result, data collection from the environment can be kept stable. The developed continuous-time control model is applied to guarantee reliable monitoring and control of temperature in a smart supermarket. Finally, the efficiency of the presented approach is verified with the results obtained in the conducted case study.


2013 ◽  
Vol 32 (5) ◽  
pp. 1443-1445
Author(s):  
Ze-hua ZUO ◽  
Xiong-feng HUANG ◽  
Yuan-qing QIN ◽  
Chun-jie ZHOU

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