Contactless Instrument Research Articles

Crossover to Crypto Currency Using E-RUPI

Abstract: Crypto currencies have recently gained a lot of attention from investors, central banks and governments, On August 2 2022, the Prime Minister, Shri Narendra Modi launched a digital payment solution e-RUPI, a cashless and contactless instrument for digital payments. He said that e-RUPI is a symbol of how India is progressing by connecting people’s lives with technology. This paper Reviews and surveys popular way of Exploring Opportunities and the Impact on Business Specifically on Rural and Urban Retail Business World, to provide a technical overview of e-Rupi, outline open challenges, and review the Fundamental Questions like Digital Wallet Holder can have equal Anonymous transaction Benefit as Physical Currency. As we all are living in a 21st century known as a technological era. In this as per various observation researcher focused on holistically Awareness and Acceptance of the e-rupi

Contactless determination of current–voltage characteristics and minority-carrier lifetimes in semiconductors from quasi-steady-state photoconductance data

A simple method for implementing the steady-state photoconductance technique for determining the minority-carrier lifetime of semiconductor materials is presented. Using a contactless instrument, the photoconductance is measured in a quasi-steady-state mode during a long, slow varying light pulse. This permits the use of simple electronics and light sources. Despite its simplicity, the technique is capable of determining very low minority carrier lifetimes and is applicable to a wide range of semiconductor materials. In addition, by analyzing this quasi-steady-state photoconductance as a function of incident light intensity, implicit current–voltage characteristic curves can be obtained for noncontacted silicon wafers and solar cell precursors in an expedient manner.

Nuclear Magnetic Resonance (NMR) Cylindrical Blood Flowmeter

In vitro tests were performed to evaluate a single-sideband crossedcoil cylindrical NMR flowmeter, for the noninvasive measurement of arterial flow rates through a cross-section of human limbs. The output signals from the NMR flowmeter, a Doppler ultrasound velocimeter, and an electromagnetic (EM) flowmeter were comparable. The frequency response showed an upper frequency 3db roll-off point of 2.1 Hz (126 pulses per minute). The relationship between the NMR peak-to-peak output voltage and pak-flow was linear in the range of physiological flow. Calibration in the linear region was essentially independent of tube positioning and tube cross section. The instrument detected flow bidirectionally, but gave a 2 times greater output voltage in the preferential direction. The NMR flowmeter is appropriate to estimate average flow rates with the human subject at rest. This NMR flowmeter is a contactless instrument, and flows can be measured unimpaired by clothing, bandages or cast.

Contactless instruments and pressure control schemes in glass furnaces

Contactless instruments and pressure control schemes in glass furnaces

Automatic discrete contactless instrument for measuring effective values of voltages with arbitrary wave forms

Automatic discrete contactless instrument for measuring effective values of voltages with arbitrary wave forms

Pneumatic contactless instrument for automatic control in the course of machining

Pneumatic contactless instrument for automatic control in the course of machining