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- R. Attri Instrumentation Design Series (Electronics) (7)
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Articles 31 - 38 of 38
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Data Communication Software- Role And Functions, Raman K. Attri, Noor Jahan Haque
Data Communication Software- Role And Functions, Raman K. Attri, Noor Jahan Haque
Raman K. Attri
The shifting of communication systems from analog to digital has introduces a new area of data communication. The core of data communication is Communication software which is the topic of my paper today. In this paper I shall cover following areas: Overview of Data Communication, Role of Data Communication Software, Functional Aspects of Data Communication Software
Software Tool For Seismic Data Recorder And Analyser, Satish Kumar, Raman Attri, B. Sharma, M. Shamshi
Software Tool For Seismic Data Recorder And Analyser, Satish Kumar, Raman Attri, B. Sharma, M. Shamshi
Raman K. Attri
Design and Development of software controlled stand-alone instruments has been identified as the most vital component of national and intemational programs on earthquake hazard and risk management. For in depth investigation and studies, the development of precise instruments designed around computer is emerging very fast. Interacing of personal computer with seismic instrument is an important design task. A design technique based on minimum hardware has been worked out around the parallel printer interface of computer. Hardware and Software for this purpose has been designed to make the instrument interact with computer through parallel port interface. Incorporation of software for seismic …
Design Of An Instrumentation System To Record Distribution Profile Of Snow Layer Temperature For Modelling Of Snow Avalanche Forecast, Raman Attri
Raman K. Attri
The measurement of snow hydrological parameters is extremely important in developing a model for the predication of Snow avalanche as well as Snowmelt water in the rivers. When direct measurement of these parameters is practically difficult, its dependence on snow temperature is used to develop snow cover models. A robust model for avalanche forecasting requires a sophisticated instrumentation system which can measure the required temperature parameters at right data points within snow pack. A Snow Temperature Profile Sensing System along with Surface temperature Sensor has been designed to measure Snow temperature gradient, temperature distributions, and average temperature of snow pack, …
Design Strategy Of Snow Depth Sensor Based On Ultrasonic Pulse-Transit Technique For Remote Measurement Of Snow Cover Thickness, Raman Attri
Raman K. Attri
Snow cover thickness is one of the important parameter used in forecasting models for snow-melt, snow run-off water, snow avalanche release and other snow hydrological changes. Ultrasonic pulse transit method is being used for such applications universally. Reflected echo coming after reflection from highly irregular and non-smooth porous surface, is very low amplitude noise ridden signal. This received echo signal has to be conditioned to remove signal and processed to increase its amplitude to make it sufficiently detectable and to increase the probability of receiving back the reflected echo. A special design of Snow Depth Sensor based on Ultrasonic Pulse …
Implementation Of Linear Array Of Ultrasonic Transmitter-Receiver Transducers For Detection Of Non-Smooth Porous Surface, Raman K. Attri, Swaranjit Singh
Implementation Of Linear Array Of Ultrasonic Transmitter-Receiver Transducers For Detection Of Non-Smooth Porous Surface, Raman K. Attri, Swaranjit Singh
Raman K. Attri
Level measurements, thickness measurement or remote surface detection using ultrasonic pulse transit method require that the target surface be at 90O to the incident beam so that reflected beam comes back at 180O angel to effectively use this method. This is perfectly true in case of flat, solid surface at right angle to the incident beam. But surface irregularities of a porous, non-smooth, uneven material such as snow cause penetration of incident wave into the surface, absorption of the incident energy, scatter of energy in many directions and further attenuation of reflected signal making it difficult to detect the reflected …
Gsis: A Conceptual Model For Web-Based Integration Of Information Technology With Geo-Scientific Instrumentation, Raman Attri
Gsis: A Conceptual Model For Web-Based Integration Of Information Technology With Geo-Scientific Instrumentation, Raman Attri
Raman K. Attri
Since a long time leading organisations have been advocating the need of implementation of IT in a centralised manner on the distributed geological data monitoring centres. In the era of IT, it is highly important to access, share and analyse related data on a common platform for fast retrieval of information in centralised as well as in distributed mode. In this article a concept to integrate Geo-Scientific Instrumentation systems to Information Technology has been highlighted. The vision to create a Geo-Scientific Information System (GSIS) would be an approach where a centralised web-enabled database of the data acquired & transmitted by …
Various Noise Sources And Noise Reduction Techniques In Instrumentation, Raman K. Attri
Various Noise Sources And Noise Reduction Techniques In Instrumentation, Raman K. Attri
Raman K. Attri
Noise is the biggest environmental factor, which determines if a system will operate reliably in practice. Noise can be random or repetitive, occurring continuously or in isolated burst. It may affect current or voltage and may occur at any frequency from DC to very high frequencies. A particular source may generate noise over narrow or wide band of frequencies. Some time the effect of noise on the system performance can be very drastic.
Snow Pack Temperature Sensor, M. Shamshi, Raman Attri, V. Sharma
Snow Pack Temperature Sensor, M. Shamshi, Raman Attri, V. Sharma
Raman K. Attri
The study of snow hydrological characteristics plays the major part in forecast of snow-melt, snow run-off water of rivers, potential release of snow avalan'che and climatic changes. Increasing importance of study of snow hydrology has lead to the development of many snow sensors which monitors physical parameter of snow. Design of such snow sensors has been a difficult job because of harsh environmental conditions. This paper present the design considerations and performance characteristics of snowpack temperature profile sensing probe. This probe provides temperature gradient and temperature distributions within the snow-pack, and ground at different depths. The information on temperature distribution …