January 2018
Intermediate to advanced
524 pages
13h 33m
English
Content preview from Internet of Things for Architects
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MEMS pressure sensors
Pressure and strain gauges are used in a variety of IoT deployments, from smart cities monitoring infrastructure to industrial manufacturing. These are typically used to measure fluid and gas pressures. The heart of the sensor is a piezoelectric circuit. A diaphragm will be placed above or below a cavity on the piezoelectric substrate. The substrate is flexible, and allows the piezo crystals to change shape. This change in shape results in a directly correlated resistance change in the material:
PressureSensor Anatomy
This type of sensor, as well as others listed in this chapter based on an excitation current, relies ...
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