Isolation of short-circuited sensor cells for...

Details Isolation of short-circuited sensor cells for... Isolation of short-circuited sensor cells for...

2007-11-13

2007-11-13

Raevis, Robert (Department: 2856)

Measuring and testing

Vibration

Sensing apparatus

Reexamination Certificate

active

11028789

ABSTRACT:
A device comprising an array of sensors and a multiplicity of bus lines, each sensor being electrically connected to a respective bus line and comprising a respective multiplicity of groups of micromachined sensor cells, the sensor cell groups of a particular sensor being electrically coupled to each other via the bus line to which that sensor is connected, each sensor cell group comprising a respective multiplicity of micromachined sensor cells that are electrically interconnected to each other and not switchably disconnectable from each other, the device further comprising means for isolating any one of the sensor cell groups from its associated bus line and in response to any one of the micromachined sensor cells of that sensor cell group being short-circuited to ground. In one implementation, the isolating means comprise a multiplicity of fuses. In another implementation, the isolating means comprise a multiplicity of short circuit protection modules, each module comprising a current sensor circuit and an electrical isolation switch.

REFERENCES:
patent: 3838314 (1974-09-01), Boothman et al.
patent: 5956292 (1999-09-01), Bernstein
patent: 6055150 (2000-04-01), Clinton et al.
patent: 2004/0122304 (2004-06-01), Duric et al.

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