Informatics Publishing Limited

B. Pavithra ¹, N. Kanya ²

Affiliations
1 Department of Computer Science and Engineering, Dr. M.G.R Educational & Research Institute University, IN
2 Department of Computer Science and Engineering, Dr. M.G.R Educational & Research Institute University, IN

Abstract

The development in electronic communication has resulted in a bigger demand for speedy and precise user recognition and verification. Access codes for building, bank financial records and computer systems frequently employ personal identification numbers (PIN's) for recognition and security verifications. Traditional method of identification based on possession of ID cards or elite information  like a social security number or a password are not all together dependable. To enlarge the security in the authentication process Biometric authentication and other digital signatures are used even though they give the successful authentication they are feeble against online attacks like botnet, malware, Intruders, spoofing ECT. In this scheme fingerprint biometric technique and Onetime password is used for well-organized authentication and anti-spoofing, Intruder detection system, DIKE key exchange and encryption technique to give efficient security against online attacks.

Keywords

Biometrics, DIKE, OTP, Malware Detection, Botnet Detection.

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Shreyas P. Bhat ¹, B. Pavithra ², S. H. Bharathi ¹, M. M. Nayak ²

Affiliations
1 REVA University, Bengaluru, IN
2 Indian Institute of Science, Bengaluru, IN

Abstract

In many industrial and academic applications force, pressure and displacement are measured using strain gauges bonded with adhesives on the object to be tested. This paper presents development and performance investigation of non-intrusive self adhesive Thin Film Strain Gauges (TFSGs) for applications demanding quick gauge installation on test objects; eliminating a conventional step of applying adhesives for installation and curing. Self adhesive TFSGs of NiCr (metal alloy) and ITO (degenerate semiconductor) are fabricated. Distinction in the piezoresistive responses and gauge factor of metal alloy and degenerate semiconductor thin film strain gauges are measured and studied by cantilever beam bending method.

Keywords

Thin Film, Thin Film Strain Gauge, Self-Adhesive, Sputtering, Piezoresistivity, ITO, NiCr.

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B. Pavithra ¹, C. Linet Thomas ¹, N. Veera Pandi ¹, K. Sankaran ¹, Nithin ¹, Smitha G. Prabhu ², K. N. Bhat ¹

Affiliations
1 Indian Institute of Science, Bangalore, IN
2 NMIT, Bangalore, IN

Abstract

In this Paper, we present the effect of active (programmable) temperature compensation for 0-200Bar in house developed Aerospace quality MEMS gauge Pressure Transducers using ZMD based IC. Two numbers of 0-200 Bar Gauge Pressure MEMS Transducer’s raw output (in mV) was compared with temperature and span compensated amplified output values (in Volts). The drift values were calculated. The effect of Nonlinearity+Hysteresis, Full Scale Output (FSO) and Zero Offset for various input temperatures were tabulated and a graph was drawn. A Static hydraulic dead weight calibrator (Fluke Make P3125) was used and a linear relation between Pressure Vs Output was obtained. The raw output data in mV as well as temperature (-40ºC to +80ºC) compensated output (in Volts) was plotted with respect to input Pressure. The Non linearity +Hysteresis value after temperature compensation was found to be 0.3%FSO. Temperature drift values obtained were better than 2 x 10-4/FSO/ºC.

Keywords

MEMS Pressure Transducer, Temperature compensation, Nonlinearity+Hysteresis.

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