Voice notification system based on modular components.
When a fire occurs, the primary task is to save people in the building. The main role in solving this problem is taken by two systems working in close interaction — the fire alarm system (FAS), which ensures the detection of a fire at an early stage, and the warning and evacuation control system (WECS).
The interaction algorithm of these systems cannot be template-based and strongly depends on the type and purpose of the building. For example, in the event of a fire in a multi-story building, it is impossible to immediately notify all floors, since if panic occurs, this can lead to a crush with the most tragic consequences. First of all, it is necessary to evacuate the fire compartment (floor or floor block) where the fire occurred. Then people from the floors above, since combustion products will penetrate there first. People on the lower floors at this time are exposed to a much lower threat and should not occupy evacuation routes. And only after a short but sufficient time should the lower floors be notified and people evacuated from the entire building.
The implementation of such algorithms is allowed only with the use of hardware, i.e., the «upper level» consisting of computers with control software is excluded. Thus, in the overwhelming majority of cases, the connection between the SPS and the SOUE occurs at the level of «dry» contacts. To ensure the necessary flexibility, one relay should be used for each notification zone, and their number in some cases can be in the tens.
The specialists of the Trascon Group of Companies have extensive experience in designing and installing fire protection systems in buildings of various types. These include administrative buildings and large sports complexes.
We have been working with Austrian equipment ESSER by Honeywell in the field of fire protection systems for over 10 years. Relatively recently, this manufacturer has launched a new line of equipment for warning systems ESSER VARIODYN® D1.
The new system can effectively compete with other famous brands because it has a wide functionality, amazing flexibility and an attractive price. But the most important thing is 100% integration with the SPS of this manufacturer using the internal protocol.
Joint use of systems allows you to implement an algorithm of any complexity without using dozens of relays and laying many wires. It is enough to simply load the ESSER IQ8 Control SPS configuration file into the ESSER VARIODYN® D1 fire alarm system configuration program and set the necessary connections. Data exchange between systems is constantly monitored and a communication break or a malfunction in the warning system will immediately be displayed in the fire alarm system.
Naturally, everything necessary to ensure the interaction of systems is certified and can be used on the territory of the Russian Federation.
General information about the VARIODYN® D1 system
The VARIODYN® D1 voice notification system is based on modular components connected via a local area network, which ensures maximum configuration flexibility taking into account the specifics of the facility. This means that special requirements can be implemented in the most cost-effective and efficient way at facilities of various sizes.
Main features of the system:
1. Full-fledged network structure with the unification of main control modules (DOM) via a local area network:
Up to 250 DOM modules in one network;
Up to 500 two-channel amplifiers;
Up to 1000 devices on digital DAL buses (microphone consoles and universal output modules);
Up to 2000 analog audio inputs for connecting external sound sources;
up to 50,000 signal inputs/outputs (contact groups) for algorithmic interconnection with external equipment;
up to 6,000 notification lines;
the number of simultaneously broadcast programs is limited by the network bandwidth (0.5 MB per program);
up to 8 simultaneously broadcast;
programs (messages) per one DOM module;
constant network monitoring.
2. Digital signal processing:
volume control (using console buttons, external contacts, time schedule, from a remote computer);
adjustable limiter for microphone consoles (DCS, DCSF);
individually for each gain channel:
volume control;
automatic level control;
(AGC) – when using touch microphones;
High-pass filter (low-pass) 2x, 4x, 6x in the range of 20Hz-20 kHz;
Low-pass filter (high-pass) 2x, 4x, 6x in the range of 20Hz-20 kHz;
delays (0-2000 ms);
8-band parametric equalizer.
3. Constant monitoring:
microphone capsules;
digital audio buses (DAL) on DOM modules, UIMs, DCS consoles;
DOM module backup power status and module enclosure temperature;
speaker lines for open circuits, short circuits, impedance changes, grounding;
Ethernet network communications between all modules;
primary and backup amplification channels