Nowadays, modern security systems create comfortable conditions in all areas of human life. One of the key components of systems of this kind is the security and fire alarm. Installation of fire alarm systems is a prerequisite for ensuring the safety of any object: whether it is a large industrial complex, a shopping center or a country house. Fire and security alarms will help prevent material and human losses in the event of an emergency.
INFOTECH LLC is a team of professionals. We provide a high-quality full-cycle service for the installation of alarm systems: design, installation and maintenance. Our company has everything you need to fulfill your order: reliable equipment, high-level specialists and rich experience in installing such systems. The main goal is the high-quality work of all components of the fire alarm system being created at your facility. We are responsible for conscientious installation with our reputation.
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According to the current regulatory documents of the Russian Federation in the field of fire safety, almost all public, industrial and administrative buildings and structures are equipped with fire safety systems. The fire and security alarm system, together with organizational measures, helps to quickly localize the source of fire, thereby saving lives and property. First, consider what tasks the OPS system solves:
1. fast detection of the place of ignition;
2. prompt notification of people about the danger that has arisen;
3. transmission of control signals to automatic fire extinguishing and smoke removal systems;
4. transmission of relevant messages to interested persons or services.
To date, OPS systems are divided into the following types:
1. Conventional (traditional) fire alarm system;
2. Address-threshold fire alarm system;
3. Analog addressable fire alarm system.
Address-analogue systems are divided according to the type of installation: wired and wireless. Wired systems are considered more reliable, because. do not depend on the influence of frequency interference of the transmitted signal from detectors and control devices.
Fire alarm system
Let us consider in more detail each type of fire alarm. Let's start with the conventional (traditional) system.
Often non-address systems are used in small and medium-sized facilities. Due to the small amount of equipment, these systems are relatively inexpensive. The devices use a modern digital signal processing algorithm, which can significantly increase the reliability of the received signals from the detectors, and as a result, the probability of false alarms is reduced, but it must be taken into account that detectors operating in a non-address system do not provide an adequate level of reliability. The principle of operation is approximately the following: control panels determine the state of the alarm loop by two static states: “normal” and “fire”. When the detector generates a "Fire" notification, the current in the alarm loop changes.
When the reliability criterion for issuing an alarm message at an object comes to the fore, it is necessary to install an address-threshold or address-analogue system. At small and medium-sized objects, it is advisable to use threshold-address systems that combine the advantages of analog-address and traditional systems. The main difference between the address-threshold alarm system and the non-address one is in the topology of the circuit construction and the algorithm for polling the detectors. The control panel polls the connected fire detectors cyclically to ascertain their status. At the same time, each detector in the loop has its own unique address and can already be in several static states: “normal”, “fire”, “malfunction”, “attention”, “dusty”, etc. In this case, the detector independently makes a decision on the transition to another state. Unlike traditional systems, such a polling algorithm allows you to accurately determine the location of the fire to the detector.
To date, addressable analog systems are the most progressive and reliable. They do not have the disadvantages inherent in non-address and address-threshold systems. Most often, these systems are used in medium and large objects. The advantages of installing analog addressable systems are obvious: free topology plus the ability to determine the location of a line break (this is essential for long cable routes). In such systems, the decision on the state of the protected object is made by the control device, and not by the detector. In the configuration of the control panel, for each connected addressable device, the response thresholds ("Normal", "Attention" and "Fire") are set. This allows you to clearly form the operating modes of the fire alarm for a particular room. The monitoring device constantly polls the connected detectors and analyzes the obtained values, comparing them with the threshold values set in its configuration. It is desirable to make the topology of the address line ring. This is necessary so that in the event of a break in the cable route with detectors, the entire system retains its operability, since it simply breaks up into two radial independent loops. All these advantages of the analog addressable system provide early fire detection and reduce false alarms.
Separately, we note the radio channel systems of the OPS. These systems or its elements are in demand at those facilities where it is not possible to lay wires. Often, the security and fire alarm system existing at the facility is supplemented in the future with radio channel elements of the system. Recently, there has been a sharp jump in the level of development of the element base responsible for transmitting and receiving signals over a radio channel. Reliability and service life of devices of radio channel systems meet modern requirements for reliability and noise immunity. Installation of radio channel signaling requires significantly less material costs due to the absence of the need to lay cable routes. On the other hand, the cost of the radio channel devices themselves is higher than their wired counterparts, and the system commissioning procedure is more laborious due to the impossibility of accurately calculating the interference situation at the facility and the non-linear dependence of the signal level in the radio channel on the parameters of the supporting structures of the building. Also, the cost of maintaining a radio channel system is more expensive, due to the need for periodic replacement of batteries.
OPS is a complex of sensors and devices that differ in performance, weight, functions and dimensions. Smoke sensors, motion sensors, temperature sensors and others stand out. When an alarm is triggered, the device notifies by SMS and sends a signal to the police console. A similar notification occurs in the event of a fire.
The security and fire alarm system is a complex complex consisting of technical equipment that prohibits unauthorized persons from entering the territory.
Means of security and fire alarms are divided into three kinds: conventional, addressable and analog-addressable:
The control panel is responsible for alerting and managing fire alarms using special interfaces, an alphanumeric keypad, as well as light and sound alarms. Small objects use control panels that use a set of relay outputs. In large and medium-sized facilities, control panels with network technologies are used, which allow you to exchange information with external interfaces, as well as receive information via an Ethernet network or by using a telephone line.
Also, the fire alarm equipment includes peripheral devices, these include all types of devices that are connected to the control panel.
You can get acquainted with the equipment of the security and fire alarm systems on our website.
Security and fire systems (OPS) are designed to determine unauthorized entry into the territory of the enterprise or fix a fire, smoke. The systems operate through a set of devices: control panels, sensors, detectors, radio controllers, include a monitoring station and power supplies. The scheme of the security and fire system is calculated from the individual plan of the room / building and is regulated by regulations, so a professional approach is required when installing the system.
Security alarms for different types of buildings will have their own characteristics: it will be a summer house or an office, several rooms or a huge complex. In a residential area, the system is mounted in such a way that children or guests cannot accidentally press the button on the control panel or knock down the sensor settings. If the security and fire system is installed in the office, then it is mandatory to instruct the employees involved.
The OPS includes a burglar alarm device, wired or wireless sensors and warning (alarm) devices. In large systems, a computer with special software is used as an element for centralized control of fire alarms. In small systems, centralized control is entrusted to the security panel - equipment that collects and processes information from intruder alarm sensors.
Sensors can provide versatile protection of your property: in case of unauthorized opening of a door, glass breakage, window opening, motion detection, ignition, smoke, etc. Depending on the tasks, vibration, acoustic, capacitive sensors, heat or smoke, flame detectors, manual call points and etc. To date, such detectors as passive infrared, magnetic contact, perimeter and combined active detectors are actively used. Such a system will ensure your safety in many ways.
Security alarm sensors should be located taking into account the interior and design features of the premises, so that they do not end up, for example, in a place where furniture is already standing. Our specialists carefully develop a security alarm project for each company in order to minimize the possibility of a gross miss.
The integration of fire and security alarms takes place at the level of centralized monitoring and control. FSOs of houses, as a rule, are administered by different, unrelated, control posts. Security alarm systems for apartments and houses promptly notify the security service in cases of unauthorized entry, record the date, place and time of violation of certain security lines.
The fire alarm system, having detected the source of ignition, promptly notifies about the fire and takes measures for automatic fire extinguishing. Since the main goal of a fire alarm is to save human lives, it is entrusted with the task of determining the source of fire and warning personnel.
Fire and burglar alarm detectors differ from each other by the type of controlled physical parameter. Depending on the principle of information signal formation, active and passive detectors are distinguished.
By type of laying, security and fire systems can be wired or wireless (withGSM- communication). In a local OPS, the signal is transmitted via ordinary telephone wires. This system provides instant response and is more reliable, although it has a number of features associated with the installation of a wired system. In a network NSO, the signal is transmitted via a mobile communication channel. This type of security and fire systems is considered more convenient: when the sensors are triggered, an alert is sent by SMS or voice notification, it is possible to alert the telephones of the city line.
Both systems use digital modem board to connect a repeater - it receives sensor signals and translates them into a voice or text series and transmits them to the PBX or control panel, notifying about the incident.
Typically, a burglar alarm is installed in three stages. First, experts will lay the cable. Then the equipment is connected. If the burglar alarm is installed at the construction stage, then the connection will be made after the completion of the finishing. Then Alefo engineers carry out commissioning of the security alarm.
Our experts in the installation of OPS take into account many aspects. One of the most important points that should be taken into account even at the stage of designing a security and fire system is cable wiring, because the success of the entire alarm system depends on it. So, for example, the gasket must be made with a 15% margin - in this case, the system will not only serve longer and more reliably, but it will also be possible to expand it. We also install junction boxes, if necessary, to maintain the efficiency of the system.
Often, some time after installation, it becomes necessary to install additional equipment that was not included in the original signaling project. There can be many reasons: there was no need for such actions or funds to pay for them, the plot expanded, etc. Therefore, Alefo designs a home security alarm system, taking into account possible expansion.
When installing fire and security alarms, we use reliable equipment from System Sensor, Bolid, Jablotron, Paradox, Honeywell, and warning systems from Roxton, Inter-M, JEDIA.
Intrusion alarms should be installed in such a way that a variety of parameters are taken into account, important indicators of access violation or fire risk are recorded. We know that only the complex use of all means will reliably protect your property from damage, and you from losses.
