Link establishment in a system for monitoring the structural integrity of a building
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United States of America Patent
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Issued Date -
Apr 26, 2007
app pub date -
Oct 20, 2005
filing date -
Oct 20, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system for monitoring the structural integrity of a building uses a frequency hopping spread spectrum (FHSS) hunt protocol to establish a digital communication link between a sensor and other nodes of the system. The sensor's role in the FHSS hunt protocol is limited, thereby minimizing the sensor's power consumption and extending its battery life. Installer devices and gateways in the system are adapted to continuously perform a first sequence including transmitting a HELLO signal and listening for an ACK signal responsive to the HELLO signal, while a sensor is adapted to selectively perform a second sequence including listening for the HELLO signal and transmitting the ACK signal.
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