Wireless sensor network
First Claim
Patent Images
1. A system for event monitoring, comprising:
- a remote sensor;
a remote transceiver interfaced to the remote sensor; and
a base transceiver that selectively wirelessly communicates with the remote transceiver;
wherein the remote transceiver provides a periodic communication to the base transceiver that is indicative of a nominal operating condition and the periodic communication is acknowledged by the base transceiver; and
wherein the remote transceiver operates in a first fail safe mode when the periodic communication acknowledgement is not received by the remote transceiver, the first fail safe mode comprising changing a channel for receiving the acknowledgement and retransmitting the periodic communication at a higher power than the first transmission of the periodic communication.
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Abstract
A system for event monitoring is disclosed. The system includes a remote sensor, a remote transceiver interfaced to the remote sensor, and a base transceiver that selectively wirelessly communicates with the remote transceiver. The remote transceiver provides a periodic communication to the base transceiver that is indicative of a nominal operating condition and the periodic communication is acknowledged by the base transceiver.
37 Citations
16 Claims
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1. A system for event monitoring, comprising:
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a remote sensor; a remote transceiver interfaced to the remote sensor; and a base transceiver that selectively wirelessly communicates with the remote transceiver; wherein the remote transceiver provides a periodic communication to the base transceiver that is indicative of a nominal operating condition and the periodic communication is acknowledged by the base transceiver; and wherein the remote transceiver operates in a first fail safe mode when the periodic communication acknowledgement is not received by the remote transceiver, the first fail safe mode comprising changing a channel for receiving the acknowledgement and retransmitting the periodic communication at a higher power than the first transmission of the periodic communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for real-time event monitoring, comprising:
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a plurality of remote transceivers, each connected to at least one sensor, the at least one sensor monitoring a parameter of a monitored system; and a base station transceiver in periodic wireless communication with each of the remote transceivers; wherein the periodic communications are via a frequency shift key (FSK) encoded frequency hopping spread spectrum (FHSS) and include scheduled heartbeat communications indicative of nominal remote transceiver operation; and wherein the failsafe mode comprises retransmitting the heartbeat communication at a higher power than the original transmission. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification