Facility environmental control system

• US 5,581,478 A
• Filed: 04/13/1995
• Issued: 12/03/1996
• Est. Priority Date: 04/13/1995
• Status: Expired due to Term

• Current Assignee: Enflex Corp. (SunEdison, Inc.)
• Original Assignee: Conservation Through Innovation, Ltd.
• Inventors: Cruse, Michael, Hibberd, Douglas G.
• Primary Examiner(s): Ramirez, Ellis B.
• Assistant Examiner(s): Shah, Kamini S.
• Application Number:
  US08/421,629
• Time in Patent Office: 600 Days
• Field of Search: 364/240.8, 364/514 C, 364/579, 364/242.94, 364/505, 364/138, 364/571.03-57.08, 395/200.11, 395/181, 395/600
• US Class Current: 700/276
• CPC Class Codes: G05B 19/042 using digital processors G05B19/05 takes precedence
• CPC Class Codes: G05B 19/4185 characterised by the network communication
• CPC Class Codes: G05B 2219/25144 Between microcomputers, processors
• CPC Class Codes: G05B 2219/2638 Airconditioning
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A facility environmental control ("FEC") system is disclosed that communicates using an open network management protocol such as the simple network management protocol ("SNMP"). The FEC system includes a first plurality of FEC devices operable to obtain data concerning the environment of a facility and a second plurality of FEC devices operable to receive command signals and perform operations that affect the environment of the facility in accordance with the received command signals. The system further includes a control system operably connected to the first and second plurality of FEC devices, and a control system agent operably connected to the control system. In general, the control system receives data from the first plurality of FEC devices and provides command signals to the second plurality of FEC devices. The control system agent is preferably operable to receive and send SNMP messages to a management node, wherein said SNMP messages include information concerning the operation of the control system.

Claims

1. A facility environmental control ("FEC") system comprising:

a) a first plurality of FEC devices operable to obtain data concerning the environment of a facility;

b) a second plurality of FEC devices, said second plurality of FEC devices operable to receive command signals and perform operations corresponding to the command signals that affect the environment of the facility;

c) a control system operably connected to the first and second plurality of FEC devices, the control system operable to receive and store data concerning the environment of a facility from the first plurality of FEC devices, and further operable to provide command signals to the second plurality of FEC devices based on the received data and a set of operating parameters;

d) a control system agent operably connected to the control system, the control system agent operable to receive and send messages to a management node using an open network protocol and standard object definitions, wherein said messages include information concerning the operation of the control system.

2. The system of claim 1 wherein the control system agent is further operable to receive and send simple network protocol messages ("SNMP") to a management node.

3. The system of claim 1 wherein the control system agent is further operable to send messages that include data representative of data received from at least one of the first plurality of FEC devices.

4. The system of claim 1 wherein the control system agent is further operable to alter one or more operating parameters in accordance with at least one message received from the management node.

5. The system of claim 1 wherein the control system includes at least one computer.

6. The system of claim 1 wherein the control system agent further includes a management information base ("MIB") connected to the control agent, said MIB operable to obtain from the control system information concerning the operation of the control system.

7. A method of managing a facility environmental control ("FEC") system, the FEC system including a plurality of FEC devices and a control system, the method comprising:

a) employing the control system agent to monitor and control a plurality of FEC devices using a proprietary set of variable definitions and data structures;

b) generating an open network management protocol message containing a request, the message being generated using a standard set of variable definitions and data structures;

c) providing the message to a control system agent;

d) employing the control system agent to provide the request to the control system using the proprietary set of variable definitions and data structures; and

e) causing the control system to monitor and control the plurality of FEC devices in accordance with the request.