Distributed sigma-delta sensor network

Details Distributed sigma-delta sensor network Distributed sigma-delta sensor network

2007-03-02

2008-11-25

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000

Reexamination Certificate

active

07456770

ABSTRACT:
The sensor network described herein uses a distributed sigma-delta converter, where each of a plurality of sensor nodes includes a sigma-delta modulator communicatively coupled to a remotely located sigma-delta processor in a control hub. Each sensor node generates a serial bit stream representative of a sensor output signal. The control hub includes a plurality of signal processors, each of which receive and digitally process the serial bit stream wirelessly transmitted by a corresponding sensor node. A controller in the control hub analyzes the digital output from each signal processor to determine one or more characteristics of the sensor network.

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A. Chhetri, D. Morrell, A. Papandreou-Suppappola, “Sensor Scheduling Using a 0-1 Mixed Integer Programming Framework, ”Fourth IEEE Workshop on Sensor Array and Multichannel Processing, 2006, pp. 471-475.
P. Aziz, H. Sorensen, J. van der Spiegel, “An Overview of Sigma-Delta Converters,”IEEE Signal Processing Magazine, Jan. 1996, pp. 61-84.

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