Building Management System Bms Server Software Computer Science Essay

Building Management System Bms Server Softw be Computer Science riseAs we known BMS are created to controlled central computer method which has 3 basis functions, which is controlling, monitoring and also optimizing.However, there is a BMS innkeeper packet package to speed the works of facilities solicitude which to functioning within the building and also to fulfill the building operation and maintenance.General RequirementThe BMS emcee system is composed of 3 sets of reducant computers, which communicate with several kinds of input or output devices, subordinate computer system and higher order computer systems. The sections described the software required to fulfill the desired functionality of the BMS.The software design is based upon real time data acquisitions and control capability. Data including bespeak values, parameters, messages, instructions, databases access statements, master clock synchronization and separate forms of computers data exchange may originates f rom or be destined for other sub-system and computers and database which may form pat of TAMS.It is responsibility of the BMS Sub-System Contractor to develop, test, document and debug software interface routines and supporting hardware to accomplish the interface requirement of BMS to TAMS and any other system or sub-system with which the BMS is required to communicate.The BMS Sub-System Contractor willinging provide software for the BMS Sub-System, which is proven in actual field installation of a similar size and scope. The BMS Sub-System Contractor will provide jazz information and responses with tenders including reference sites, name, and anticipate number of reference site contracts. software system LicensingKLIAB respects the propriety nature of certain software. Commercially available software purchased from a third party much(prenominal) as Microsoft Windows, UNIX, OS/2 and similar software packages are provided. Licenses are bound with the operation and maintenance m anuals for BMS system.BMS manufacturers proprietorship software is provided fully licensed. All BMS manufacturers proprietary software will have complete sources codes, programs listings and supporting information deposited in an escrow account at the BMS Sub-System Contractors expense.BMS Server SoftwareOperating SystemThe BMS server computers will utilize a multi- exploiter, multi tasking operating system designed for client server operations. The operating system will support all the required software functions and coat described in the BMS specifications.Standard services supported by Operating System on serves will include the followingMulti- tasking Multi- drug user supportPOSIX 1003, 1 complianceTCP/IP, SLIP Network SupportNetwork File System (NFS)C language complierThe BMS Sub-System Contractor will provide to the SMC one complete set of operating system user manuals and programmers references manuals bound as part of separately BMS Operation and Maintenance Manual.BMS S oftware ExecutiveThe BMS Sub-System Contractor shall provide a complete BMS software executive module which provides at minimumWorkstation communication sportPrinter quering and taskingI/O Channel support for up to 99 communication channelDisk optimization routinesOn-line database backup and restorationMemory management functionsSoftware watchdog functionsNetworking functionsHousekeeping functionsDiagnostic routinesServer redundancy SoftwareThe BMS Sub-System Contractor will provide six complete server computers arranged as three sets of redundant hot standby server system. for each one server computer are equipped with all hardware and software with complete capability to support the designated BMS tasks.Each server will coexist on the BMS network and are able to automatically assume full operation of BMS without any loss of data, alarm, or status information.The redundancy software provides full databases charges make to the primary server are propagated to the backup server with out any operator intervention.Changeovers from primary to backup server are accomplished within 10seconds, whether manually initialed or automatically initialed.Detection of any server software execution failure will cause the automatic transfer of all server functions to the backup server and will initiate a primary server failure alarm.These alarm are distributed a BMS Alarm Handling Software specifications. These sewer failure alarms are classified at the highest priority level.The BMS Sub-System Contractor will provide a hardware or software switch to allow the user selection of which server computer is the primary server, and which is the backup server.Such selections are made freely and at any time during the normal operations of the BMS Server System.It is possible at any time to completely remove one of the server computers for repair, maintenance or other need without disrupting normal BMS operations.BMS workstations will automatically switch the user interface and TCP/IP a ddress to the server in control of the BMS, without operator intervention.Alarm Handling SoftwareComplete Alarm Handling Software modules are provided in the BMS server software package.The alarm handling software will provide comprehensive alarm detection and management facilities to allow exuberant and accurate notification to the BMS of abnormal point values or conditions.Alarm Attribute TableEach and every BMS point capable of alarm will have alarm attribute designate in an alarm attribute table.The alarm attribute table will govern the way and means by which the point alarm is reported by the BMS.The alarm attribute table are on-line definable and changeable by an authorized BMS user. Each point defined in the Alarm Attribute Table will, upon change of state, read the table and be acted upon accordingly.For each point the following attribute are definablePrint alarm/ inhibit printingPrinters assigned to print point alarmPrint alarm onlyPrint all point eventsWorkstation assign ed to display alarmAlarm class 1-4 (normal, urgent, low, journal)Alarm priority 1-9 (9 priorities within each class)Unanswered Alarm SoftwareIf dedicated BMS workstation is been assigned to take on an alarm, each incoming alarm will start a software timer who starts upon alarm generations and ends upon alarm acknowledgement.If an alarm is not acknowledge within a user defined number of seconds, an unanswered alarm are automatically generates and displayed at the EOC monitoring room BMS workstations, whether or not the EOC monitoring room workstation were assigned to receive the original acknowledge alarm. The unanswered alarm events are recorded as a transaction in the historical transaction database file.ConclusionThese software were helped the facilities management functioning within the building by utilizing Building Management System to fulfill the building operation and maintenance. It is also helped to ease of information availability fuss diagnostics and helped computerized maintenance scheduling. However, this software was maintained effective use of maintenance staff and it is give more satisfied an occupants.