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Definitions: Transducer and sensors. Transducer. a device that converts a primary form of energy into a corresponding signal with a different energy form Primary Energy Forms: mechanical, thermal, electromagnetic, optical, chemical, etc. Sensor (e.g., thermometer) is a device that detects a change.
sensors need to be calibrated against known standards. Sensors are used in everyday objects such as touch-sensitive elevator buttons (tactile sensor) and lamps which dim or brighten by touching the base. There are also innumerable applications for sensors of which most people are never aware.
Describe common methods for converting a physical parameter into an electrical quantity and give examples of transducers, including those for measurement of temperature, strain, motion, position and light. Explain how to make sensitive measurements using a Wheatstone bridge, including balancing and offset compensation.
Module 2: Sensors and signal processing Lecture 1 Sensors and transducers Measurement is an important subsystem of a mechatronics system. Its main function is to collect the information on system status and to feed it to the micro-processor(s) for controlling the whole system.
INTRODUCTION. In chapter 1 we saw that the first two components of an instrumentation system are usually a primary sensing element such as a spring, which is mechanical in nature, and a transducer. The transducer has the function of converting the input to an electrical form for convenient transmission, data storage or analysis.
Pressure sensors, resistance temperature sensors, thermistors, strain gauges and photoresistors are examples of sensors, because they are supplied with electrical energy and give an electrical signal when subjected to a stimulus (Fig. 2.1b).
Sensors and Transducers: What is a Transducer: A device that converts a signal from one physical form to a corresponding signal having a different physical form. Transducer is a converter of any one type of energy into another. Transducers may be used as actuators in various systems.
