AHMEDABAD DIVISION TENDER DOCUMENT ... - Western Railway

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[Downloaded from Internet] 7. In case of GPRS failure the EMCS Unit should store all the data with date/time stamp for at least 10 days and should send it to Central Server as the GPRS resumes and should ensure more than 95% data transmission. 8. EMCS Unit should support Remote Over The Air Firmware Updates of the complete unit for future proof deployment 2.2 Web based Software Functional Requirements : The following should be taken care of in the Central Data Centre by the bidder: 1. The Data Collection Servers should work on open protocol having mechanism for assured delivery of data sent by EMCS hardware device. 2. The Data transfer between the Data Collection Servers and EMCS devices should work on publish subscribe mechanism. There should be no requirement of polling of data of the EMCS devices by the data collection server. The EMCS devices should publish their data to the data collection server on their own at a frequency of 15 minutes and configurable by User. In case of interruption in the communication, the EMCS device should be capable of resuming the communication from the last point. 3. The application software should be based on Service Oriented Architecture (SOA). 4. The application should be based on n-tier architecture with separate layers for presentation, business rules, middleware and database. Each tier should be based on component architecture. 5. The database servers should be clustered to work in fail-safe mode with SAN storage to handle the huge data storage requirements. (Necessary Invoicing / Work Order to be provided) 6. Backup: The Bidder shall have to automate its system so as to have regular back up of the data to ensure availability of data and information. 7. Designing and deployment of clustered database (high availability mode) at central location: The Bidder is required to design the database in RDBMS platform so as to store all meter readings and Events at a pre-defined frequency along with meter configuration data. The database servers shall be installed in clustered mode to ensure its high availability. SAN Storage should be working at least on RAID-5 mode. 8. All the application software, which is to be supplied by the Bidder, shall be web based. The web application should be accessible by RAILWAYS officials by entering their user name and password. There should not be any requirement on local application, and the system should work from anywhere on a simple web browser with secured username and password. [ Tenderer ] [ Page 32of 44 ] [For Sr.DEE/ADI ]
[Downloaded from Internet] 9. Access and Data Security: The web interface should be on secured layer using https protocol based on 128-bit SSL encryption. The Antivirus server should be deployed at Data Centre for protection against any virus attacks to the network and servers. Data Center Servers should be protected by a firewall. Firewall should have flood control, intrusion prevention services and anti-spamming features. 10. The system should have a laser jet printer suitable for A-4 size paper for printing of a generated data. 3. Technical Specifications 3. 1 EMCS Hardware Specifications • It shall be “SINGLE INTEGRATED UNIT” consisting of following- a. Tri – vector electrical energy meter (1 to 4 number depending upon requirement) b. Micro-controller based system c. Inputs & Outputs – Digital Inputs, Digital Outputs, Analog Inputs d. Potential free outputs e. GPRS communication modem f. Inbuilt 2 GB Memory for backup and storage of data g. Power Supply – 12 Volt DC with battery Charging h. Battery – 12 V DC i. On-board Real Time clock j. RS232 Serial port for system maintenance k. LCD display and keypad l. LASER JET PRINTER. • The EMCS device should be operational within the temperature range 0-50 Deg. C • Dual band GPRS Modem for communications with Central Server. • Antennas of suitable gain to assure connectivity at all times and conditions. • Micro controller based Unit to collect the data from Energy meters and capable of communicating with GPRS. On board RTC of high accuracy with battery back-up. [ Tenderer ] [ Page 33of 44 ] [For Sr.DEE/ADI ]
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AHMEDABAD DIVISION TENDER DOCUMENT ... - Western Railway

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