Communication protocol system and method for a distributed-architecture heating, ventilation and air conditioning network
First Claim
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1. An HVAC data processing and communication network, comprising:
- a first system device adapted to provide a first service and publish a message including a first device status vector representing an availability of said first system device to provide said first service; and
a subnet controller adapted to receive said message from said first system device including said first device status vector via a data bus,wherein said subnet controller is further adapted to receive, via messages from a plurality of system devices including said first system device, a corresponding plurality of device status vectors that includes said first device status vector, wherein each device status vector includes a plurality of bits, each bit having within said device status vector a bit position that corresponds to one of a plurality of potential services provided by said system devices, said plurality of services including said first service, said subnet controller further adapted to perform a logical operation on a bit corresponding to said first service from each of said plurality of device status vectors to determine if said first service is available.
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Abstract
The disclosure provides an HVAC data processing and communication network and a method of manufacturing the same. In an embodiment, the network includes a system device and a subnet controller. The system device is adapted to provide a service and publish a message including a device status vector representing an availability of the system device to provide the service. The subnet controller is adapted to receive the message from the system device including the device status vector via a data bus.
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Citations
16 Claims
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1. An HVAC data processing and communication network, comprising:
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a first system device adapted to provide a first service and publish a message including a first device status vector representing an availability of said first system device to provide said first service; and a subnet controller adapted to receive said message from said first system device including said first device status vector via a data bus, wherein said subnet controller is further adapted to receive, via messages from a plurality of system devices including said first system device, a corresponding plurality of device status vectors that includes said first device status vector, wherein each device status vector includes a plurality of bits, each bit having within said device status vector a bit position that corresponds to one of a plurality of potential services provided by said system devices, said plurality of services including said first service, said subnet controller further adapted to perform a logical operation on a bit corresponding to said first service from each of said plurality of device status vectors to determine if said first service is available. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of manufacturing a HVAC data processing and communication network, comprising:
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configuring a first system device to provide a first service and publish a message including a first device status vector representing an availability of said first system device to provide said first service; configuring a subnet controller to receive said message from said first system device including said first device status vector, further configuring said subnet controller to receive, via messages from a plurality of system devices including said first system device, a corresponding plurality of device status vectors that includes said first device status vector, wherein each device status vector includes a plurality of bits, each bit having within said device status vector a bit position that corresponds to one of a plurality of potential services provided by said system devices, said plurality of services including said first service; and configuring said subnet controller to perform a logical operation on a bit corresponding to said first service from each of said plurality of device status vectors to determine if said first service is available. - View Dependent Claims (8, 9, 10, 11)
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12. A system device for use in an HVAC data processing and communication network having a plurality of system devices, wherein each of said plurality of system devices is configured to send a corresponding device status vector, comprising:
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a physical layer interface adapted to couple said system device to a data bus; a first demand unit configured to provide a first HVAC service; and a local controller adapted to publish a message including a first device status vector representing an availability of said first demand unit to provide said first HVAC service, wherein said first local controller is further adapted to publish, via messages sent via said data bus, said first device status vector having a plurality of bits, each bit having within said first device status vector a bit position that corresponds to one of a plurality of potential services provided by said system devices, said plurality of services including said first HVAC service, wherein said first local controller indicates an availability of said first demand unit to provide said first HVAC service with a single bit having a first polarity, and said first local controller fills each remaining bit position of said first device status vector with a bit having a second polarity, wherein a subnet controller of said HVAC data processing and communication network is adapted to perform a logical operation on a bit corresponding to said first HVAC service from each of said plurality of device status vectors to determine if said first HVAC service is available. - View Dependent Claims (13, 14, 15, 16)
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Specification