A MEMS pressure sensor device (200, 400, 500, 600) is provided that can provide both a linear output with regard to external pressure, and a differential capacitance output so as to improve the signal amplitude level. These benefits are provided through use of a rotating proof mass (250, 420, 520) that generates capacitive output (283, 293) from electrodes configured at both ends of the rotating proof mass. Sensor output can then be generated using a difference between the capacitances generated from the ends of the rotating proof mass. An additional benefit of such a configuration is that the differential capacitance output changes in a more linear fashion with respect to external pressure changes than does a capacitive output from traditional MEMS pressure sensors.
Pressure sensor with differential capacitive output
Drucksensor mit differenziellem kapazitivem Ausgang
Capteur de pression à sortie capacitive différentielle
2018-02-14
Patent
Elektronische Ressource
Englisch
Capacitive Differential-Pressure Gauge for High Temperature
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