99 000 RPM Contact-Less Digital Tachometer Featuring LCD display and automatic DATA hold function By Ibrahim Kamal Last update: 14/7/10 This article describes how to build a contact -less tachometer (device used to count the revolutions per minute of a rotating shaft) using a 8051 microcontroller and a proximity sensor. As the name implies‚ what makes this device special‚ is that it can very accurately measure the rotational speed of a shaft without even touching it. This is very interesting
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TITLE CONTACTLESS TACHOMETER ABSTRACT: The aim of the project is to design a contactless speed sensing device (tachometer) for a motor. Traditional tachometers require a physical contact to the shaft of the motor to measure the speed. In certain applications‚ where it is not possible to measure the speed directly‚ it is possible for a contactless tachometer to take the readings from a certain distance. This is the main motivation behind choosing this project. This contactless tachometer uses
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next generation no lithography machines. A lot of disturbance sources can be eliminated by integrating the cascaded long-and short-stroke actuator into one actuator system. Since most long-stroke movements are in a plane‚ this can be done by a contactless planar actuator. The topology proposed and tested in this paper provides long-stroke contact less energy transfer (CET) in a plane with only small changes in power transfer capability. 2.DESCRIPTION ACTUATOR Actuator is a
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Technology revolutions have made mobile phones central to financial transactions and one example of a brilliant innovation is NFC. Near field communication (NFC) is changing the way people pay for their shopping in Japan and South Korea and its contactless payment technology is said to be the next big thing. This shows Safaricom’s precision in capitalizing on an opportunity that allows it to test new technology for a social cause. Third Learning: How to bring about the change? There was a very clear
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These are generally acceptable in benign environments‚ but can be unsafe or have limited life in the presence of moisture. In explosive atmospheres and in undersea applications‚ special connectors must be used. This paper describes a technique‚ the contactless energy transfer system (CETS)‚ by which electrical energy may be transmitted‚ without electrical connection or physical contact‚ through nonmagnetic media of low conductivity. The CETS‚ which has been used to transfer up to 5 kW across a 10-mm
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Abstract In this progressive continually modern era‚ people are seeking for achieving and accomplishing their daily duties as quick as they could. That is due to the increased requirements in each day. Yet the quick and rapid advance in technology has forced us to consider the consumption of time more then ever before. For instant‚ internet has tremendous effects on our life; it has reduced the time spent and effort too. For example searching for information of a country desired to travel to for
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Department of Business Studies Diploma in Business Administration Diploma in E-Commerce August 2012 Semester Final Examination ELCM 201D Introductions to E-Commerce Duration: 2 hours Instructions: 1. This paper consists of 6 printed pages (including the cover). 2. Section A: Answer ALL questions on the multiple choice answer sheet provided. Section B: Answer any FIVE (5) questions on the answer sheets provided. Section C: Answer ALL questions on the answer
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OF RELATED LITERATURE There are similar cases of projects similar to the implementation of the Automated fare Collection System (AFCS). Such systems are currently being used in developed countries. EZ-Link (Singapore) The EZ-Link is a contactless smart card in Singapore used for paying transportation fees for the Mass Rapid Transit (MRT)‚ Light Rail Transit (LRT) and public bus services. Aside from its primary use of transportation payment‚ the card has been developed as a viable substitute
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SECURITY OF CONTACTLESS SMART CARDS By (Project IV: PJT401B) Submitted in partial fulfillment of the requirements for the degree BACCALAUREATUS TECHNOLOGIAE: INFORMATION TECHNOLOGY in the FACULTY OF INFORMATION AND COMMUNICATION TECHNOLOGY (Department of Software Engineering) at the TSHWANE UNIVERSITY OF TECHNOLOGY 1. BACKGROUND The Contactless smartcard has built-in chip technology‚ as well as a standard magnetic Stripe. This enables the card to be used in the
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proffer identity solutions that will meet the challenges faced by schools. It has become important to guide against counterfeiting‚ forging and impersonation of their identity cards. What better way to do that than Biometrics verification systems and Contactless smart cards. This allows unique identification of each student/staff because two fingerprints can never be the same. The creation of fake I.D cards has never been easier but thanks to our new ID card protection features this problem will adequately
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