Global Fire Equipment Networking Fire Detection Systems

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GFE\'s Product Profile
Networked Systems
Do\'s and Dont\'s

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Global Fire Equipment Networking Fire Detection Systems

  1. 1. Fire Detection Systems Networks
  2. 2. <ul><li>Manufacturer of Fire Detection Systems </li></ul><ul><li>Based in Faro, Portugal since 2000 </li></ul><ul><li>50 Employees in 1200 sq. Meter facility </li></ul><ul><li>In house manufacturing from PCB assembly to finished product </li></ul><ul><li>Pick and place surface mount technology </li></ul><ul><li>TQC- Total Quality Control </li></ul>
  3. 3. <ul><li>Miguel de Sousa </li></ul><ul><li>GFE’s Technical Director </li></ul><ul><li>20 Years Experience: </li></ul><ul><ul><li>Electronic Systems Design </li></ul></ul><ul><ul><li>Fire Detection Systems </li></ul></ul><ul><ul><li>Security </li></ul></ul><ul><ul><li>R & D Project Management </li></ul></ul>
  4. 4. <ul><li>Zicom – Building Solutions Group </li></ul><ul><li>Global Fire Equipment S.A. </li></ul><ul><li>Strategic Partnership </li></ul><ul><li>OEM </li></ul><ul><li>I Sense Brand </li></ul><ul><li>Commitment </li></ul>
  5. 5. <ul><li>Background </li></ul><ul><li>2 Main Topologies </li></ul><ul><ul><li>Conventional </li></ul></ul><ul><ul><li>Addressable </li></ul></ul><ul><ul><ul><li>Addressable </li></ul></ul></ul><ul><ul><ul><li>Analogue Addressable </li></ul></ul></ul>
  6. 6. <ul><li>Fire Conditions Signaled: </li></ul><ul><ul><li>Switch Activation </li></ul></ul><ul><ul><li>Current Limit </li></ul></ul><ul><ul><li>End of Line Monitoring </li></ul></ul><ul><ul><ul><li>Resistive Capacitive </li></ul></ul></ul>
  7. 7. <ul><li>Digital Protocol </li></ul><ul><ul><li>General System Status </li></ul></ul><ul><ul><ul><li>Fire </li></ul></ul></ul><ul><ul><ul><li>Fault </li></ul></ul></ul><ul><ul><ul><li>Pre-Alarm </li></ul></ul></ul><ul><ul><ul><li>Maintenance </li></ul></ul></ul><ul><li>Each Device has an address </li></ul><ul><ul><li>Soft Addressing </li></ul></ul><ul><ul><li>Hard addressing – DIL Switch, Programming Card </li></ul></ul>
  8. 8. <ul><li>Device response corresponds to actual value of parameter being measured and not the device status. </li></ul><ul><li>Physical Layer </li></ul><ul><ul><li>Voltage Pulses from Panel to Devices </li></ul></ul><ul><ul><li>Current Pulses from Devices to Panel </li></ul></ul><ul><ul><li>Alternative Methods </li></ul></ul><ul><ul><li>FSK – Frequency Shift Keying </li></ul></ul><ul><ul><li>Radio Frequency </li></ul></ul>
  9. 9. <ul><li>Configuration of Devices via Loop Interface </li></ul><ul><li>More Device Types </li></ul><ul><li>Calibration </li></ul><ul><li>Sensitivity Settings </li></ul>
  10. 10. <ul><li>Stand Alone </li></ul><ul><ul><li>Conventional Systems </li></ul></ul><ul><ul><li>Small Addressable Systems </li></ul></ul><ul><li>Networked Systems </li></ul>
  11. 11. <ul><li>Applies mainly to large addressable Systems </li></ul><ul><ul><li>High Rise Buildings </li></ul></ul><ul><ul><li>Multi Building Sites </li></ul></ul><ul><ul><li>Shopping Malls </li></ul></ul>
  12. 12. <ul><li>Master - Slave </li></ul><ul><li>Peer – to - Peer </li></ul>
  13. 13. <ul><li>Increased System Redundancy </li></ul><ul><li>Facilitates System Layout </li></ul><ul><li>Integration to Building Management Systems </li></ul>
  14. 14. <ul><li>RS-485 – Copper </li></ul><ul><li>Fibre Optics </li></ul><ul><li>LAN - TCP/IP </li></ul>
  15. 15. <ul><li>Serial Data Transmission </li></ul><ul><li>Wire Based Half, Single and Full Duplex </li></ul><ul><li>Data Rate adaptable to distances involved between nodes and cable types used. </li></ul><ul><li>High Level of Noise Rejection </li></ul><ul><li>Maximum distances up to 1400 meters. </li></ul>
  16. 16. <ul><li>Serial Transmission </li></ul><ul><li>Higher Data Transmission Rates </li></ul><ul><li>Longer Distances between nodes: </li></ul><ul><ul><li>Multi Mode typically up to 4 Kms </li></ul></ul><ul><ul><li>Mono Mode up to 20 Kms </li></ul></ul><ul><li>Higher Noise Immunity than copper based systems. </li></ul>
  17. 17. <ul><li>Direct Integration with site’s LAN </li></ul><ul><li>Possibility of connection to WANs </li></ul><ul><li>Network can be web enabled. </li></ul><ul><li>Offers extra layer of monitoring and control. </li></ul><ul><li>Use of site’s LAN network will bring, in most cases, savings on cabling and installation </li></ul>
  18. 18. <ul><li>Commonly known as BMS </li></ul><ul><li>Propietary software for Monitoring and Control </li></ul><ul><li>Graphical PC Software </li></ul><ul><li>Integration with 3rd party software: </li></ul><ul><ul><li>Modbus </li></ul></ul><ul><ul><li>Bacnet </li></ul></ul><ul><ul><li>etc </li></ul></ul>
  19. 21. <ul><li>Location : Millennium Building Complex São Paulo – Brazil </li></ul><ul><li>Site Structure : 5 buildings - 5 floors per building </li></ul><ul><li>2000 sq. Meters / floor (average) </li></ul><ul><li>Type : Business & Office Centre </li></ul>
  20. 22. <ul><li>This system has been chosen because it shows very clearly the benefits of implementing a networked system. </li></ul><ul><li>While at the same time demonstrating the consequences of not using a distributed layout. </li></ul>
  21. 23. <ul><li>The system comprises 12 loops of addressable devices and it was initially quoted as a distributed system, consisting of a single loop Main Panel and four 3-loop self contained sub-panels. </li></ul><ul><li>The network was to be RS-485 based using CAT5 UTP cable. </li></ul><ul><li>Due to financial constraints, the electrical sub-contractor insisted on a single 12 loop panel being installed in the central building which housed in its basement, a security station. </li></ul>
  22. 25. <ul><li>GFE’s Technical Department expressed reservations about this system layout and voiced their concern to the installer. </li></ul><ul><li>A system of this size based on a self contained panel was bound to create problems due to excessive loop lengths. </li></ul><ul><li>Our advice was initially not followed and installation was done as per the customer’s demands. </li></ul>
  23. 26. <ul><li>Some loops were extremely long (in excess of 2 Kms ) </li></ul><ul><li>This caused permanent problems on the communication between panel and loop devices: </li></ul><ul><ul><li>Missing devices </li></ul></ul><ul><ul><li>Wrong device types fitted </li></ul></ul><ul><ul><li>Instability on the total loop device count </li></ul></ul><ul><ul><li>Instability of analogue value being reported by certain devices </li></ul></ul>
  24. 27. <ul><li>The distributed solution was the best approach. </li></ul><ul><li>Overall structure of the network - taking into account the topology of the site,: </li></ul><ul><ul><li>3-loop Main Panel </li></ul></ul><ul><ul><li>4 Repeater Panels each with 3 loops </li></ul></ul><ul><li>All nodes in the system would be linked using Fiber Optics. </li></ul><ul><li>Use of double redundant data loop insures communication between all nodes, even when the status of one of the data communication loops is compromised. </li></ul><ul><li>The use of Fiber Optics will also eliminate the effects of EMI, insuring integrity of data packets flowing between nodes. </li></ul>
  25. 29. <ul><li>The direct implication of this change in system topology was a drastic reduction in the maximum loop length to a more manageable length of 600 meters. </li></ul><ul><li>All faults in the system were removed and the system has been operating without any problems for the last 3 years. </li></ul>
  26. 30. <ul><li>Although the overall cost of the hardware used in this distributed layout is higher than the centralized system </li></ul><ul><li>The extra hidden costs incurred due to extra maintenance and site visits far outweigh the extra hardware cost involved on a networked system. </li></ul><ul><li>Customer’s Loss of confidence on: </li></ul><ul><ul><li>the installer </li></ul></ul><ul><ul><li>equipment being employed. </li></ul></ul>
  27. 31. <ul><li>Installation could have been further improved by splitting the system into 5 individual, 2 or 3 loop systems. </li></ul><ul><li>One system per building. </li></ul><ul><li>Linked to a centralized monitoring station </li></ul><ul><li>Using proprietary graphical software or MODBUS linked to 3rd party BMS software. </li></ul>

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