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Meshed telemetry system using frequency hopping for intermittent transmission
| Details |
Inventors: Partyka, Andrzej;
Assignee:
Primary Examiner: Edwards, Jr.; Timothy
Assistant Examiner:
Attorney, Agent or Firm:
A plurality of cooperative telemetry systems is disclosed in which each telemetry system comprises a plurality of remote telemetry transmitters to intermittently transmit short duration messages indicative of the status of sensors associated with the remote telemetry transmitters and at least one telemetry collection unit including a radio transceiver. Each telemetry collection unit forms a node in a wireless network in which telemetry collection units cooperate with each other in order to increase reliability and lower the average cost of each telemetry system. Such network can communicate with a remote central monitoring station via one or more network interface units connected to a private or public wired or wireless network. |
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DETAILED DESCRIPTION The illustrative embodiment of the present invention comprises a plurality of telemetry systems where each system comprises several remote telemetry transmitters to intermittently transmit short duration messages indicative of the status of the sensors associated with the transmitters, and at least one telemetry collection unit having a radio transceiver.
In an illustrative embodiment of the present invention, the telemetry collection units forward alarm messages received from other telemetry collection units and respond to messages from remote telemetry transmitters associated with other telemetry collection units.
In effect, the telemetry collection units and the associated remote telemetry transmitters form a meshed wireless telemetry system in which telemetry collection units cooperate with each other in order to increase reliability and lower the cost of each system.
Such meshed telemetry system can communicate with a remote central monitoring station via one or more network interface units connected to a private or public wired or wireless network.
In an illustrative embodiment, the network interface unit is wireless equipment that connects to one telemetry collection unit.
In accordance with an illustrative embodiment, there are fewer wireless network interface units than there are telemetry collection units in the meshed system, thus, in a meshed system, the cost of the wireless network interface unit can be shared between several telemetry systems.
However, in an alternative embodiment the network interface unit is a wireline modem, and there may be one modem for each telemetry system.
In accordance with an illustrative embodiment, the telemetry system has the telemetry collection unit receiver augmented by a transmitter circuitry thus rendering it to become a system transceiver.
Such a modification is simple and inexpensive since the transmitter can share most of its circuits with receiver.
For example the transmitter control can be accomplished by the same logic circuit or microprocessor as the receiver
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Communications 
