Micromechanical memory sensor

Details Micromechanical memory sensor Micromechanical memory sensor

H - Electricity

01

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H01H 9/20 (2006.01) B81B 3/00 (2006.01) G01P 15/08 (2006.01) H01H 1/00 (2006.01) H01H 35/14 (2006.01) H01H 35/34 (2006.01) H01H 37/52 (2006.01) H01H 37/74 (2006.01) H01H 61/02 (2006.01)

Patent

CA 2192440

A micromechanical memory sensor includes a latch member assembly (20, 30) mechanically latching upon detection of a threshold value of a variable condition (ambient temperature, acceleration, pressure). The mechanical latching is detected by circuitry of a readout mechanism (21, 22). The sensor further includes a resetting mechanism such as a thermal resistor (24), proof mass (52, 101) or electrostatic combing drive (170, 175) for electrically unlatching the latch member assembly whereby the sensor is latched purely mechanically in its operative states and is electrically reset for repeat use.

Le capteur présenté comprend un élément de verrouillage qui effectue un verrouillage mécanique lorsqu'une valeur seuil d'une condition variable est détectée, ainsi qu'un circuit servant à la détection d'un tel verrouillage. Ce capteur comprend également un mécanisme de remise à l'état initial, servant au déverrouillage électrique de l'élément de verrouillage, le capteur verrouillé purement mécaniquement étant ainsi remis à l'état initial électriquement pour être réutilisé.

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