The NMS mass notification system provides real-time information and instructions to people in a building, area, location, or installation by intelligently communicating with visible signals, text, and graphics.
The purpose of mass notification is to protect life by identifying the existence of an emergency situation and informing people of the necessary and appropriate reaction and action.
UL 2572 defines emergency communication systems / mass threat notification systems as follows:
“A configuration of components and interfaces that are used to communicate information to occupants in a building, site area, or other space about emergency conditions.
Systems that consist of equipment that reproduce live and recorded voice messages, tones and visual indicators such as strobe lights and visual displays ”
NFPA 72 defines MNS as follows:
“MNS is provided for the protection of life to give an indication of the existence of an emergency situation and instructing the occupants of the necessary and appropriate response and action.
A mass notification system is considered to be a system used to provide information and instructions to people in a building, area, site, or other space using intelligible voice communications and possibly including signals, text, graphics, tactile, or other communications methods. ”
Mass notification systems are an integral part of emergency and non-accident messages for organizations of all sizes and in all industries.
The key part of the MNS system is a messaging system that provides live or recorded voice communication to staff in a large area.
The mass notification system can also have an anti-terrorist purpose.
Public Address Voice Alarm (PA / VA) integrated with fire alarm systems can be used to provide mass notification to residents of buildings with fire conditions as well as other emergency situations such as weather alerts, chemical spills and terrorist threats. The basic premise of this practice is that it enables the reliability and resilience of Public Address Voice Alarm systems to provide multiple types of communication. This results in high system performance and avoids the additional cost of installing and maintaining multiple systems.
Public Adress Voice Alarm systems provide mass alerting to emergency residents. The reliability of the fire detection system makes it a highly effective platform for mass notification. Principles, testing procedures and installation practices are already established. Also first rescuers are already familiar with fire detection equipment, many with years of practical experience. Some fire and life safety systems have expanded their voice communications by introducing mass notification. The system has the ability, via LAN (local area network), WAN (Wide Area Network) or the Internet, to send automated real-time threat messages to many distant locations simultaneously. Essentially, workstations connected to a fire safety system can send alarm messages to one or more locations. MNS can integrate a variety of technologies and devices, including amplifiers, speakers, electronic displays of electronic messages (all monitored for integrity), computer interfaces, emergency calls, commercial radio programs, cable TV and mobile phones. The most advanced solutions use a wireless network or fiber network capable of simultaneously transmitting audio and digital communications over a single fiber-optic band. Mass notification systems work well in disasters. Regardless of whether they respond to a warning of internal security or warn people against a water disaster that can affect building operations in many ways, these systems can save valuable time and allow crisis managers to focus on high priority tasks.
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The main role of Voice Alarm System is the implementation of essential evacuation functions and communication of a threat occurrence. In normal conditions, Voice Alarm System fulfils the role of Public Address System and is able to broadcast music or public announcements using zone microphone or other connected to the system source of sound. Public Adress system for transport infrastructure enables broadcast of messages to selected platforms or other infrastructure of the train station in order to inform waiting passengers about any changes to the train schedule or any potential threat.
Integrated audio inputs in each Control Unit and each microphone allow connection of external sound sources and transmission of messages emanating from precedent external communication system.
Integrated message buffering function enables recording higher priority messages, broadcasting them through already engaged, by superior sources, loudspeakers and automatically playing them once the line becomes free.
Equipping miniVES control units with communication cards enables connection of multiple industrial facilities into one system. Network cabling between control units made in the form of a fibre loop ensures that any damage of the cabling appearing in any place has no effect on the correct operation of the system.
Microphones located in the main building enable a transmission of verbal and/or automatic alerts to the selected speaker zones in all buildings.
Fireman’s microphone is a top-priority device, providing transmission of the alerts on threats to the people within all or selected buildings.
In case of fire emergency, receipt of control signals from Fire Alarm System or manual activation from the fireman’s microphone, the system sends alerts from the memory located in every miniVES control unit. Single devices operate as autonomous systems, ensuring continuous airing of the alerts on any threats, while total loss of the connection in a part of the systems takes place.
Speaker lines, within open areas, are connected to the central devices with certified surge arresters which ensure safety of devices in case of surges in speaker lines due to lightning discharge.