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2SignalSources - Signal Sources B Furman 01FEB2007...

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Signal Sources B. Furman 01FEB2007
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Mechatronics Concept Map System to Control Sensor Signal Conditioning Controller (Hardware & Software) Power Interface Actuator User Interface Power Source BJ Furman 26JAN06 ME 106 ME 154 ME 157 ME 195 ME 120 ME 297A ME 106 ME 120 ME 106 ME 190 ME 187 ME 110 ME 136 ME 154 ME 157 ME 182 ME 189 ME 195 ME 106 ME 120 ME 106
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Signal Sources - 1 Signal source concept Sensors as an information source Their output voltage or current level encodes information about the quantity to be measured Remember the dishwasher light sensor example? Output voltage proportional to intensity of light Most often information is encoded as a voltage level Ex. The voltage output from a Wheatstone bridge The information: weight on the scale encoded as a voltage Current level also used 4 – 20 mA commonly used in industrial controls Signals to power interface
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