Engineering Specifications
Video Smoke and Flame Detection System v 1.1
Overview
The video smoke and flame detection system shall consist of the following components :-
- Video Smoke and Flame Detectors
- Video Smoke, Flame and Heat Detectors
- Secure Network Appliances with Power Over Ethernet
- System Annunciator Unit with Monitor, Keyboard and Mouse
- System Watchdog Module
- Modbus Modules providing Relay Outputs and Alarm Inputs
- Monitoring and Review Software
The components shall be combined to form a system which protects high value assets by providing early detection alarms from smoke, flame and high temperatures, live video images for situational awareness of the nature, size and scale of any fire incident and recorded footage for post incident analysis. The system components shall be connected via a secure hardened management layer built into the Secure Network Appliance.
Video Smoke and Flame Detector
The video smoke and flame detector shall be an early warning visual detection device for smoke and flame seen within its field of view.
The video smoke and flame detector shall use a brightness and intensity based flame detection analytic in order to deliver a high detection rate and minimised false triggers.
The video smoke and flame detector shall include a dual layer smoke detection analytic in order to detect accumulating ambient smoke.
The video smoke and flame detector shall include secure alarm transmission to enable visual verification of incidents.
The video smoke and flame detector shall have two independent sets of detection parameters to accommodate changes in operational processes.
The video smoke and flame detector shall include dynamic masking capabilities to allow specific conditions to be excluded whilst remaining monitored at other times.
The video smoke and flame detector shall have 16 independent zones of detection within the field of view which can be independently adjusted to match operating conditions on site. It shall be possible to perform logical combinations of triggers between zones in order to set alarm condition.
The video smoke and flame detector shall provide both indoor and outdoor detection.
The video smoke and flame detector shall be available with detection ranges of 20 metres, 35 metres and 70 metres, based on the detection of a standard 1 foot square oil pan fire.
The video smoke and flame detector shall have a 1/4” CMOS image sensor with progressive scan.
The video smoke and flame detector shall include JPEG, H.264 and MPEG-4 compression.
The video smoke and flame detector shall have a maximum output resolution of 640 x 480 pixels.
The video smoke and flame detector shall include JPEG, H.264 and MPEG4 compression.
The video smoke and flame detector shall included integrated camera recording (ICR) to an internal micro SD card. Sufficient storage shall be provided to deliver 1 – 2 days of continuous recording per detector.
The video smoke and flame detector shall be capable of redundant recording through the capability of dual recording domains.
The video smoke and flame detector shall include the following image controls : Automatic White Balance, Electronic Iris, Flip/Mirror Video and Sharpness Control.
The video smoke and flame detector shall support the following network protocols DCCP, DHCP, HTTP, HTTPS, SMTP, BONJOUR, ICMP, DNS, NTP, TCP,UPP, ICMP,ARP, RTP, FTP, SNMP and Zeroconf.
The video smoke and flame detector shall include simple web page configuration.
The video smoke and flame detector shall provide smoke detection when a minimum illumination of 20 lux is at the detector.
The video smoke and flame detector shall have an operating temperature range of -10C to +50C.
The video smoke and flame detector shall use a flame detection algorithm where individual pixels are compared spatially and temporally in order to reduce false triggers caused by movement of objects in the field of view and ambient light level changes.
The video smoke and flame detector shall include the following controls to reduce the level of false triggers : Nuisance Threshold, Nuisance Accumulator Increment, Nuisance Accumulator Maximum, Nuisance Luma Minimum, Nuisance Luma Maximum, Gamma, Contrast Threshold, High Pass Filter, Low Pass Filter.
The video smoke and flame detector shall use a flame detection algorithm based on the absolute physical law of Planck’s Law in order to detect the emissivity of black body emitters and provide reliable flame detection and a low rate of false triggers.
The video smoke and flame detector shall use a lens coupled with an infra-red (IR) bandpass filter in order to detect the 850nm IR range.
The video smoke and flame detector shall operate at a minimum video field rate of sixty images per second. Two channels are utilised, the first at thirty images per second to provide visual awareness images and smoke detection through video analytics. The remaining thirty images per second shall be used to create six discrete settings of constant exposure images providing the flame detection algorithm with the colour and intensity of the flame for analysis.
Video Smoke, Flame and Heat Detector
The video smoke, flame and heat detector shall have the same feature set as the video smoke and flame detector and other features in addition as follows :
The video smoke, flame and heat detector shall be fitted with a thermopile sensor for the detection of temperature.
The video smoke, flame and heat detector thermopile sensor shall have a field of view of 43.8 in the horizontal plane and 33.6 degrees in the vertical plane.
The video smoke, flame and heat detector thermopile sensor shall have a resolution of 82(h) x 62(v) pixels.
The video smoke, flame and heat detector thermopile sensor shall have a temperature measurement range of -30 degrees Celsius to +300 degrees Celsius.
The video smoke, flame and heat detector thermopile sensor shall have a temperature measurement range of 35 metres maximum.
The video smoke, flame and heat detector thermopile sensor shall be programmable with respect to alarm temperature threshold.
The video smoke, flame and heat detector shall provide sensor fusion such that thermal information is overlaid on to the situational awareness video images produced by the detector.
Secure Network Appliances with Power Over Ethernet
The Secure Network Appliances shall be specifically designed for IP video networks.
The Secure Network Appliances shall include deterministic IP detector assignment to network port.
The Secure Network Appliances shall include traffic management on a port by port basis.
The Secure Network Appliances shall create trusted endpoints that protect video and corporate networks from unwanted intrusion.
The Secure Network Appliances shall restrict multicast such that no one network endpoint can gain access to video from any other detector or endpoints on the network.
The Secure Network Appliances shall provide Power Over Ethernet (PoE) in order to provide power for the video smoke and flame detectors.
System Annunciator Unit
The System Annunciator Unit shall be provided with an HDMI output to drive a local display monitor.
The System Annunciator Unit shall be provided with USB connections for a computer keyboard and mouse to enable local control of the video smoke and flame detection system.
The System Annunciator Unit shall be provided with an Ethernet network port for connection to the rest of the video smoke and flame detection system.
The System Annunciator Unit shall provide initial discovery and control of the video smoke and flame detection system IP network.
The System Annunciator Unit shall display of system status by individual detector and any further system health / secondary watchdogs etc. Status shall be displayed on the local monitor.
The System Annunciator Unit shall provide colour-coded annunciation of smoke, flame and temperature threshold alarms to the local display monitor, with overview map and video display from active video smoke and flame detectors.
The System Annunciator Unit shall provide control and monitoring of local Modbus relay interfaces, either physical or virtual.
The System Annunciator Unit shall manage Remote Video Receiving Centre (RVRC) communications to facilitate the remote monitoring of the video smoke and flame detection system.
The System Annunciator Unit shall control proxy access to individual detectors for support and maintenance.
The System Annunciator Unit shall provide a single IP address gateway and proxy server to provide access to the video smoke and flame detection system by authorised users.
System Watchdog Module
The System Watchdog Module shall be provided with an Ethernet port for connection to the video smoke and flame detection system.
The System Watchdog Module shall constantly monitor the status of video smoke and flame detection system hardware and shall signal system hardware failures to modbus relay output.
The System Watchdog Module shall constantly monitor the status of video smoke and flame detection system IP network and shall signal system IP network failures to modbus relay output.
Modbus Modules providing Relay Outputs and Alarm Inputs
The Modbus Modules shall be provided with Ethernet ports for connection to the video smoke and flame detection system, via the hardened management layer.
The Modbus Modules shall signal detection of smoke from the video smoke and flame detectors through the operation of relay outputs of the modbus modules.
The Modbus Modules shall signal detection of flame from the video smoke and flame detectors through the operation of relay outputs of the modbus modules.
The Modbus Modules shall signal detection of temperature threshold trigger from the video smoke, flame and heat detectors through the operation of relay outputs of the modbus modules.
The Modbus Modules shall signal hardware failures of the video smoke and flame detectors and IP network failures through the operation of relay outputs of the modbus modules.
The Modbus Modules shall be provided with alarm inputs such that elements of the video smoke and flame detection system may be temporarily disabled by third party equipment if required by operational needs.
Monitoring and Review Software
The Monitoring and Review Software shall be provided to permit access to live and recorded images of the video smoke and flame detection system via the corporate network of the site.
The Monitoring and Review Software shall provide single, picture in picture, quad and multi-screen viewing options
The Monitoring and Review Software shall provide colour-coded annunciation of smoke, flame and temperature threshold alarms and video display from active video smoke and flame detectors. and shall facilitate the display of associated live and recorded video images.
The Monitoring and Review Software shall support both 4:3 and 16:9 format views.
The Monitoring and Review Software shall create reference images for specific detectors to be used as a point of reference for detector movement, or image obstruction.
The Monitoring and Review Software shall include frame advance/rewind, fast picture search and pause functions.
The Monitoring and Review Software shall include the ability to search recordings by date and time.
The Monitoring and Review Software shall allow playback of recordings in full screen and multi-screen.
The Monitoring and Review Software shall have the ability to export recorded video from the video smoke and flame detection in AVI or MPEG-2 formats.
The Monitoring and Review Software shall have the ability to export still images from the video smoke and flame detection in JPEG or PDF formats.
The Monitoring and Review Software shall operate on a Windows 10 platform or later.
The Monitoring and Review Software shall operate on a PC with an Intel I7 or equivalent processor.