When automotive ignition and carburetor systems initially required inputs from the engine to control spark and fuel and lower vehicle emissions, a capacitive pressure sensor was designed to specifically measure manifold absolute pressure (MAP) and barometric absolute pressure (BAP). Called a silicon capacitive absolute pressure (SCAP) sensor, it consisted of a micromachined diaphragm etched into […]
infineon technologies
How do microphone sensors fit into a smart home?
A quick search for “sensors in the smart home” can easily identify dozens of sensors – primarily for sensing physical properties. The results could be one of many specific sensing technologies or specific products. For example, one search showed: Fire/CO detection Leak/moisture detection Window & door open and close Video doorbell Smart thermostat Motion sensors […]
What is photoacoustic spectroscopy (PAS)?
Identified in the 19th century, the photoacoustic effect allows the conversion of light into sound and has been employed in devices such as non-dispersive infrared absorption spectroscopy (NDIR), which was the first commercially available device to detect gases using this effect. Modulating the light intensity produces a periodic pressure variation, which is measured with a […]
