Distributed Impact Detection System

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,990.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
NNL05AA82P
Agency Tracking Number:
041727
Solicitation Year:
2004
Solicitation Topic Code:
X4.03
Solicitation Number:
n/a
Small Business Information
Invocon, Inc.
19221 I-45 South, Suite 530, Conroe, TX, 77385-8746
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
782566418
Principal Investigator:
Mike Walcer
Principal Investigator
(281) 292-9903
walcer@invocon.com
Business Contact:
Mary Pate
Business Official
(281) 292-9903
pate@invocon.com
Research Institution:
n/a
Abstract
Automated impact detection and characterization on manned spacecraft has been an elusive goal due to the transitory nature of the detectable high-frequency signals. The proposed approach for this effort is to use large numbers of self-powered, miniaturized, "stick on" piezoelectric sensory nodes that are synchronized within a radio frequency network. Each node will continuously monitor an accelerometer or acoustic emission sensor element for an impact event, such as the foam impact that caused the Columbia tragedy or an MMOD impact. When a programmable threshold is exceeded, a low-latency signal acquisition circuit will capture the event as a digital waveform for post-processing and impact characterization. In addition, autonomous collaboration and synchronization between nodes of the network will provide for accurate location determination through amplitude and time-of-arrival analysis. The innovative signal conditioning circuit design is capable of operation in the micro-watt range on average while constantly maintaining the capability to process and acquire very high-frequency acoustic signals. Such performance can provide operating lifetimes of 20+ years on a single AA battery, or unlimited operation from scavenged power sources such as solar or thermal gradients.

* information listed above is at the time of submission.

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