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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a pair of sensors (Transmitter and receiver) which gives the output to the microcontroller. The timer and the counter of the microcontroller gives the speed of the rotating shaft. The microcontroller is interfaced with an LCD to display the speed. The LCD directly displays the speed of the device in rpm. The controller is selected based on the high processing frequency it needs to meet. The concept of the contact-less tachometer can be enhanced and implemented in industries like recycling facilities
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condition prevails for more than threshold time‚ interrupt signal from the sensor is sent to microcontroller. Microcontroller detects and services the interrupt. Display messages are stored in interrupt service routine. Microcontroller sends corresponding message to alert congestion to GSM modem. The message is also displayed on LCD display. GSM modem transmits the message in form of short message service (SMS) in all receiving modems in surrounding junctions. When other modems receive the message
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………………………….…….....……………………………..17 Fig 3.8 Torque Production in Dc Motor………………………….……………………..….……18 Fig 3.9 Induced Voltage In The Armature Winding Of Dc Motor……..………………………..20 Fig 3.10 Gear Motor - Helical Gear……………………………………..……………….………21 Fig 3.11 LCD Display……………………………………………………………………………22 Fig 4.1 Circuit Diagram………………………………………………………...……….……….26 Fig 4.2 Led Connections…………………………………………………………………………27 Fig 4.3 External Interrupt Connections………………………..……………..…………………..28 Fig 4.4 Max 232 Connections…………………………………
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Provide displays in schools 1.1 When preparing to work on a display in our school there are outlines which must be followed to ensure the safety and quality of the display. The display must pose no possible risk to the health and safety of the children‚ this means there should be no pins sticking out of the wall and no protruding sharp objects. There are set areas in the corridors and hall for each class to work‚ it is important to check which area has been allocated to your class before working
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previous year‚ 2010. The main decision that needs to be made is how to split this budget between offline and online advertising. Within online advertising‚ BBVA must decide which portion of the budget to allocate to paid searches and which portion to display ads. If we were responsible for solving the problem‚ we would keep the ratio the same between online and offline advertising. Currently online advertising is 21% of the marketing budget but is only responsible for 5% of new customers. BVAA has
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Retail Display Effect of signage and digital display on consumer Behavior Submitted By: Guided By: V.Anusha Prof. Hardeep Singh Roll No.04 PGDM-RM KJ Somaiya Institute Of Management Studies and Research Table Of Contents 1. Abstract…………………………………………………………………………………………………………….....1 2
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BOARD DISPLAYS EVALUATION FORM Topic of the Board Display: Announcement‚ Achievements of the students Location of the Board Display in School: Along the school oval Check the column that indicates your rating. Write comments to back up your ratings. 4-Outstanding 3-Very Satisfactory 2-Satisfactory 1-Needs Improvement Criteria NI S VS O Comments Effective Communication Conveys the message quickly and clearly It is clear‚ direct to the readers.
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1.1 Fashion Retail Window Displays For this assignment I am going to analyse the features of 2 fashion retail windows in terms of their effectiveness in supporting a positive brand image. Harvey Nichols In 1831 Benjamin Harvey opened a linen shop in a terraced house on the corner ofKnightsbridge and Sloane Street in London. Later‚ the business was passed to his daughter‚ and started selling Oriental carpets silks and luxury goods alongside the linens. Up to date‚ Harvey Nichols has open
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Rights and Justice Program School of Law La Trobe University Improving Access to Justice through Alternative Dispute Resolution: The Role of Community Legal Centres in Victoria‚ Australia Research Report Dr Lola Akin Ojelabi Funded by Faculty of Law and Management‚ La Trobe University‚ Australia September 2010. Contents 1. 2. 3. 3.1. 3.2. 4. 4.1. 4.2. 4.3. 4.4. 4.5. 4.6. Executive Summary ..............................................................................................
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