contactless digital tachometer using 8051 abstract

Contactless digital tachometer using 8051.
A three digit contact less digital tachometer using 8051 microcontroller which can be used for measuring the revolutions/second of a rotating wheel, disc, shaft or anything like that is introduced in this project. The tachometer can measure up to a maximum of 255 rev/sec at an accuracy of 1 rev/sec. What you just need to do is to align the sensor close to the reflective strip (aluminium foil, white paper or some thing like that) glued on the rotatin ....etc

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hi
i want the source code for the microcontroller based tachometer.
plz help. ....etc

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thanks
hope you help me a lot thanks againe thanks thanks ....etc

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Analogue Beam Forming

Analogue Beam Forming (ABF) means, that the received echo signals from each element of the phased array antenna, are combined at the RF carrier frequency level. This analogue beam former feeds up to four centralized receiver channels, down-converting the signal to the basic band (or to an intermediate frequency, IF). The following Analogue-to-Digital Converter (ADC) digitizes the IF or the video signals.
Digital Beam Forming

Digital beam forming (DBF) can be realized at element level or at sub array level. In DBF-archite ....etc

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digital clock using 8051 advantages and disadvantages

Digital clock displays the time using numbers. This circuit is used in many applications like cars, railway stations, houses, offices, etc. in order to provide accurate time and date. In this type of applications, normally we use RTC (Real Time Clock) ICs to display the time and date accurately. This circuit displays the time on LCD. For this clock, we can set the time at any instant. Here the clock works in 24 hour mode and the RTC chip is configured by programming 8051 controller.

Circui ....etc

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Wireless Tachometer

Tachometer is used to find out the rpm of the motors. You can make your own tachometer here .

http://pptpdf.net/subcategory.php?categ=unknown&categ_id=1&/Project%20Reports/Electrical-Electronics-Apllied_Electronics-Instrumentation/project%20list1 ....etc

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please send me the working of tachometer using microcontrollers . ....etc

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To get full information or details of microcontroller based tachometer please have a look on the pages

http://seminarsprojects.net/Thread-%09microcontroller-based-tachometer?pid=76661&mode=threaded

if you again feel trouble on microcontroller based tachometer please reply in that page and ask specific fields in microcontroller based tachometer ....etc

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advantages and disadvantages of digital tachometer pdf

Tachometer (Revolution counter, tachometer, tachometer, the RPM gauge) is an instrument for measuring the rotational speed of the disk or, as in the machine.The engine or other device usually displays the number of revolutions per minute (RPM) on the calibrated analog dial, but digital displays are becoming more common. The word comes from the Greek (Tachos speed) and Metron ( measure). In fact the word tachometer and speedometer are of equal importance: a device that measures the spe ....etc

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Abstract

Closed-loop servo control of a DC motor and load system using tachometer feedback is a very common industrial and research application. In the presence of finite shaft stiffness, this exercise becomes involved since flexibility introduces resonance and shaft ringing. To be able to model, predict, and eliminate these high-frequency resonance problems by means of an appropriate controller design, it is essential to have an accurate model for the entire drive system, including the tachometer.

The conventional tachometer model does n ....etc

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