Category: Basics of Biomedical Instrumentation Systems
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Optical Fiber Sensors and their Applications in Medical Field
Introduction The use of optical fiber sensors in medical field is based on their ability to transmit light over great distances with low power loss and the interaction of the light with a measurand system. These sensors are electrically passive and hence immune to electromagnetic disturbances. Optical fibres are geometrically flexible and corrosion resistant. They…
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Types of Transducers used in Biomedical Measurement Applications
What is a transducer? A transducer is a device that converts one form of energy or variable into another form of energy or variable. A transducer is required to convert physiological variables into electrical signals which are easier to be further processed. We have a number of factors which are considered in choice of a…
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Sources of Biomedical Signals
Biomedical signals/physiological signals are those signals (phenomenon that conveys information) which are used primarily for extracting information on a biological system under investigation. Our body produces various physiological signals. The accessibility to these signals is important because these signals: All physiological signals can grouped as: A transducer converts a physical signal into an electrical output.…
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Key Points to Note when using a Biomedical Instrumentation System
In most of the medical instrumentation systems, some calibration is necessary at regular intervals during their operation. The calibration signal is applied to the sensor input or as early in the signal processing chain as possible. In many measurement applications in the medical field, some form of stimulus or energy is given to the patient…
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The Introduction to Biomedical Instrumentation
Introduction Biomedical Instrumentation deals with the measurement and analysis of current or voltage signals from different parts of the body. The human body generates a variety of voltages which are usually very small. Biomedical instrumentation helps medical personnel or physicians to make a better diagnose of the problem in a patient and provide the appropriate…