Facility and gas management system

• US 5,428,555 A
• Filed: 04/20/1993
• Issued: 06/27/1995
• Est. Priority Date: 04/20/1993
• Status: Expired due to Term

• Current Assignee: Praxair Technology Incorporated (Linde Plc)
• Original Assignee: Praxair Incorporated (Linde Plc)
• Inventors: Starkey, Sean C., Penstein, Richard
• Primary Examiner(s): Voeltz, Emanuel T.
• Assistant Examiner(s): Tran, Alan
• Application Number:
  US08/048,919
• Time in Patent Office: 798 Days
• Field of Search: 364/510, 364/551.01, 364/413.01, 364/143, 364/413.02, 364/467, 364/138, 364/510, 364/550, 364/143, 364/579, 395/200, 340/870.13, 340/318, 340/309.4
• US Class Current: 700/275
• CPC Class Codes: G05B 19/042 using digital processors G05B19/05 takes precedence
• CPC Class Codes: G05B 19/0421 Multiprocessor system

Abstract

An interactive computer controlled management system for real-time data gathering and analysis of process information relating to a plurality of data sources in a facility and for controlling process functions of the data sources. In a preferred embodiment, the data sources include gas cabinet panels and related process equipment typically found in a wafer fab facility. The system operates in a distributed processor environment and includes a host processor having graphic, control and user interfaces and a multi-ported processor networked to the host processor. The multi-ported process includes protocol sensitive hardware interfaces for communication with the programmable logic controllers of each particular data source. The multi-ported processor also includes software means for emulating a common protocol such that each gas cabinet or other connected device appears to the host processor as an address location in a memory of the multi-ported processor. The address locations are sequentially polled by the host for updated status, alarm and set point information which is displayable at the host terminal. The functions of the management system are divided into three primary information management and monitoring areas including alarm management, map functions and administrative functions. The alarm management functions permit acknowledgement of alarms and retrieval of updated alarm information. The map functions provide specific information about gas cabinets and other components within the facility. The administrative functions control basic system operation such as access, report generation and shut down procedures.

Claims

1. In a computer-controlled facility management system for centralized monitoring, analysis and control a plurality of pieces of process equipment each having protocol-sensitive data sources associated therewith, which system includes a distributed network of processors for dividing up processing tasks, including at least one user-interactive host processor having program means for graphical manipulation, analysis and display of process information data collected from said data sources, at least two of said data sources having different protocols so that data segments from one are arranged in a different order than data segments from the other, and wherein said host processor is coupled to at least one multi-ported processor which, in turn, is coupled to each of said plurality of data sources for input/output data communication therewith, an improved method for operating said multi-ported processor for real-time monitoring and control of said process equipment and the process information data relating to said plurality of data sources comprising the steps of:

a) sequentially polling, by means of the multi-ported processor, each of said plurality of protocol-sensitive data sources for status and alarm data;

b) parsing the updated status and alarm data in to segments, by means of the multi-ported processor, for conversion to a common protocol;

c) storing the parsed status and alarm data segments at individual address locations in a memory accessible by said at least one host processor, said individual address locations being ordered according to a protocol used by said at least one host processor; and

d) causing said at least one host processor to access said address locations in order to retrieve status and alarm data in its protocol and to transmit requests to said plurality of data sources through said multi-ported processor to have said process equipment perform selected control functions in response to said parsed status and alarm data retrieved from said memory by said host processor.

2. A method as in claim 1 wherein said plurality of protocol-sensitive data sources comprise a plurality of protocol-sensitive device types and wherein said method further includes the steps of:

a) determining a device type corresponding to a particular control function request; and

b) placing a control function request for a protocol-sensitive device type into an appropriate one of a plurality of request sub queues, each sub queue having a corresponding network protocol,

3. A method as in claim 2 wherein at least one of said plurality of protocol-sensitive device types includes a dual network gas cabinet controller having a first high speed network for communication of digital data to said multi-ported processor and a second low speed network for communication of analog set point data to said multi-ported processor, and wherein a request sub queue for said high speed network has priority over a request sub queue for said low speed network during said step of placing a control function request into an appropriate sub queue.

4. A method as in claim 3 wherein said control function requests include at least one shutting down a gas cabinet, purging a gas cylinder, and locking/unlocking a gas cabinet.

5. A method as in claim 3 wherein said plurality of protocol-sensitive data sources includes at least one bar code reader, said method comprising the additional step of generating a gas panel lock/unlock control function request using said at least one bar code reader.

6. A method as in claim i wherein said alarm data includes a plurality of different alarm events and wherein said method further comprises the step of ranking said alarm events.

7. An interactive computer-controlled facility management system for real-time data gathering and analysis of process information relating to a plurality of pieces of process equipment each having protocol-sensitive data sources associated therewith and for selectively controlling operational functions of said process equipment, at least two of said data sources having different protocols so that data segments from one are arranged in a different order than data segments from the other, comprising in operative combination:

a) at least one multi-ported processor means, coupled to each of said data sources, for sequentially polling each of said data sources for status and alarm data, updating said polled status and alarm data, parsing said updated status and alarm data in to segments for conversion to a common protocol and storing said parsed status and alarm data segments at individual address locations in a memory means coupled to said multi-ported processor means, said individual address locations being ordered according to a certain protocol; and

b) at least one host processor means using said certain protocol and coupled to said at least one multi-ported processor means for accessing said first memory means to retrieve current status and alarm data segments in its protocol for a selected data source and for generating requests to said selected data source for its associated process equipment to perform a control function in real-time in response to said status and alarm data retrieved from said first memory means.

8. An interactive computer-controlled facility management as in claim 7 wherein said multi-ported processor means further includes means for identifying a control function request generated by said host processor means, determining a corresponding data source by device type and communicating said control function request to said determined data source prior to polling said determined data source for updated status and alarm data.

9. An interactive computer-controlled facility management as in claim 8 further including display means coupled to said host processor means for graphical display of said retrieved status and alarm data.

10. An interactive computer-controlled facility management system as in claim 8 wherein said host processor includes means for generating reports on said updated status and alarm data.

11. An interactive computer-controlled facility management system as in claim 8 wherein:

a) said plurality of data sources include at least one dual network protocol gas cabinet controller and at least one bar code reader;

b) said control function requests include shutting down a gas cabinet, purging a gas cylinder, locking/unlocking a gas cabinet; and

c) said at least one bar code reader includes means for generating a gas panel lock/unlock control function request for said at least one gas cabinet controller.

12. An interactive computer-controlled facility management system as in claim 8 wherein said alarm data includes a plurality of different alarm events and said multi-ported processor means further comprises means for ranking said alarm event prior to storing in said first memory means.