Dr Jahangir Ikram What is Transducer In general‚ any device that converts one form of energy to the other. For measurement systems: A transducer produces a usable electrical output signal in response to s specific physical phenomenon. Force‚ Acceleration‚ Light‚ Displacement‚ RPM‚ Pressure‚ Temperature‚ Humidity. Selection Considerations Sensitivity Defined as range of output / unit input Range Transducers must respond over the min and max values to be measured
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Assignment no. 2 Ujjwal Dahiya Electronic sensors Sensors are sophisticated devices that are frequently used to detect and respond to electrical or optical signals. A Sensor converts the physical parameter (for example: temperature‚ blood pressure‚ humidity‚ speed‚ etc.) into a signal which can be measured electrically. Classification based on property is as given below: Temperature - Thermistors‚ thermocouples‚ RTD’s‚ IC
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Pore Pressure Transducer (PPT) Calibration Procedure By Javier Ubilla Rensselaer Polytechnic Institute - The main components of the PPT are the Head which contains the Diaphragm with 4 strain gauges attached in full bridge configuration. This Diaphragm is protected with a Porous Stone. The sensor is connected to the Data Acquisition System (DAQ) through a Transition Cable and then a Thin Cable. In order to facilitate the saturation of the PPT‚ especially in tests where viscous fluid is used
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TERM PAPER TRANSDUCERS NAME: B NAVAJEEVAN KUMAR SEC : E2102 ROLL NO.: A-20 REG NO.:11106898 SUBMITTED TO: SUBMITTED BY: MRS PUNEET NAVAJEEVAN TRANSDUCERS ------------------------------------------------- Transducer A transducer is a device that converts a signal in one form of energy to another form of energy. Energy types include (but are not limited to) electrical‚ mechanical‚ electromagnetic (includinglight)
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PIEZOELECTRICITY AND APPLICATIONS Piezoelectricity is the ability of some materials such as crystals and certain ceramics‚ to generate an electric potential in response to applied mechanical stress or heat. If the piezo crystals are not short-circuited‚ the applied charge induces a voltage across the material. The word Piezo is derived from the Greek “Piezein”‚ which means to squeeze or press. The piezo material exhibits both “Direct piezo electric effect” as well as ‘Converse piezo electric
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Ultrasound – Sendwavesintobodywhicharereflectedattheinterfacesbetween tissue – Returntimeofthewavestellsusofthedepthofthereflectingsurface History – Firstpracticalapplication‚1912unsuccessfulsearchforTitanic – WWIIbroughtmassivemilitaryresearch-SONAR(SOundNavigation And Ranging) – Mid-centuryusedfornon-destructivetestingofmaterials – Firstusedasdiagnostictoolin1942forlocalizingbraintumors – 1950’s2Dgrayscaleimages
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Because of this‚ they are often used as ancillaries of each other. However‚ their significance cannot be deprecated as each of them has its preferred areas of applications. Sonography (or ultrasonography) is an imaging technique that makes use of ultrasound to construct images of subcutaneous body structures such as tendons‚ muscles‚ vessels and joints. An image obtained through sonography is called a sonogram. The professional who performs ultrasonography is called a sonographer. This paper has been
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Sensors and Transducers Sensors and Transducers Third edition Ian R. Sinclair OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE NEW DELHI Newnes An imprint of Butterworth-Heinemann Linacre House‚ Jordan Hill‚ Oxford OX2 8DP 225 Wildwood Avenue‚ Woburn‚ MA 01801-2041 A division of Reed Educational and Professional Publishing Ltd A member of the Reed Elsevier plc group First published by BSP Professional Books 1988 Reprinted by Butterworth-Heinemann 1991 Second edition published
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Ultrasonography‚ commonly called sonography‚ is a diagnostic medical procedure that uses high frequency sound waves (ultrasound) to produce dynamic visual images of organs‚ tissues‚ or blood flow inside the body. This type of procedure is often referred to as a sonogram or ultrasound scan. Sonography can be used to examine many parts of the body‚ such as the abdomen‚ breasts‚ female reproductive system‚ prostate‚ heart‚ and blood vessels. Sonography is increasingly being used in the detection and
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sonography is ultrasounds. These machines are used as image and diagnostic tools. They are more commonly used in obstetrics and gynecology during a woman’s pregnancy. Many women opt for ultrasounds mainly because it allows them to know the sex of their baby and the health of their baby. The majority of medical professionals suggest the use of ultrasounds to find out if there are any health risk to the baby or the mother and make sure that they are both healthy. The first ultrasound used for gynelogical
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