Repair of fire and security fire alarm systems. Modernization of security alarms Belarusian State University of Transport

Manufacturers quite often improve their equipment by introducing new technologies. burglar alarm.

I offer my services in this area and guarantee that your system will be as efficient, modern and reliable as possible.

My advantages

Modernization of the security alarm system is needed if necessary:

• introducing new functions that require the installation of additional modules;
• obsolete equipment;
• failure of parts or components of the old system that cannot be replaced due to the cessation of production of components;

Price-quality ratio. Do you already have a project from another company? I'm sure I can sell it cheaper than my competitor offers.

Before upgrading the security alarm system, the following are carried out: preparatory work, How:

• analysis of the current state and performance;
• determining the possibility of changing elements to parts of a new release;
• selection of equipment and software;
• drawing up a plan and estimating the cost of work;
• conclusion of a contract.

Such implementation activities the latest solutions security alarms make it possible to receive modern system security without replacing it completely. And this event is more profitable than.

My advantages:

• warranty on all work for 1 year;
• a full range of services in the field of security alarms;
• extensive work experience - more than 12 years.
• minimum costs (individual entrepreneur);

BELARUSIAN STATE UNIVERSITY OF INFORMATICS AND RADIO ELECTRONICS

Department of REA

ABSTRACT

on the topic of:

“Modernization of the security alarm system at Motexavtozapchasti LLC”

Minsk, 2009

Development of microelectronics

Modern microelectronics has led to revolutionary transformations in almost all branches of technology, not to mention radio-electronic and electronic computing equipment. Increasing the packing density of equipment on microcircuits, their reliability and durability, automation of the production of element base have made it possible to use quite complex microelectronic devices in such areas as automotive industry, communications, control technological processes, measuring technology, Appliances, security alarm, etc.

At the same time, the emergence and development of microelectronics as a scientific and technical direction required a fundamental change in both equipment design methods and the direction of training modern specialists in the design, production and operation of microelectronic equipment for various purposes. Designing equipment based on the principles of comprehensive miniaturization is possible only on the basis of a modern systems approach and the use of achievements in various fields of science and technology, including the physics of semiconductors and thin films, cryogenic and laser technology, precision chemical analysis, the theory of finite state machines, filtration theory, principles of structural optimization, design automation and modeling electronic circuits in a number of other disciplines.

Security system in the company Motexavtozapchasti LLC ”

The company “Motexavtospare parts” is engaged in the supply and sale of spare parts for cars to the Belarusian market. Upon arrival at the company, the goods are placed in a warehouse. The total warehouse area is 4000 square meters. Due to the fact that expensive products are stored in this area, they need protection.

At first, the warehouse was under the protection of only one watchman, who periodically made rounds around the territory. However, in 2005, despite security, the warehouse was robbed. As a result, the company suffered losses in the amount of 30 thousand.

This case made management think about strengthening the security system as a whole. Motion sensors were installed inside the warehouse, video cameras were installed around the perimeter, additional lighting adjacent territory. For modernization, it is proposed to introduce a device, which we will consider in more detail (see Appendix 3).

This device is intended for:

Detection of unauthorized entry into a protected area;

Generating a warning light-acoustic signal to the control panel of the duty personnel;

Generating a signal to turn on external light-acoustic warning devices.

The device is assembled on 561 series chips. The device includes: four identical recognition elements, a sound alarm control circuit, and a power supply. It has the following parameters:

Supply voltage ~ 220 V

Power consumption no more than 50 W.

Input signal level _+ 2.6 V

Number of control channels – 4

Control voltage:

in standby mode + 2.6 V

in “alarm” mode 9 - 12 V

The maximum length of the connected line between the control device and the hub is 200 m with a wire cross-section of at least 0.35 mm2.

Average time between failures is at least 50,000 hours.

The average service life of the device is at least 10 years, taking into account repair and restoration work.

The average shelf life before commissioning is at least 36 months. The design of the device provides free access to the component elements of the product during commissioning and repair work.

The hub is implemented on 561 series microcircuits, since they are the most reliable and noise-proof, namely on K561TL1, K561M2, K561IE16, K561LE6 microcircuits.

All microcircuits are powered using a power supply.

Four channels operate independently from each other with their identification and state processing: turns on the LED indication on the remote control, turns on the external sound alarm when there is an alarm signal at the output of any channel.

The device is designed to control the entry of unauthorized persons into a protected area.

The circuit consists of a power supply, a tracking unit and a recognition element.

Let's consider the principle of operation. In the initial state, the circuit operates normally, triggers DD2.1 and DD2.2 are in the zero state, counter DD3 is blocked by a high level at the reset input R. At the input of the hub, due to the high input resistance, a voltage of approximately a quarter of the power supply voltage (about 3V) is generated. This level is perceived by the DD1.1 valve as low, but is sufficient to open the VT1 transistor, as a result of which the DD2.2 trigger holds low level, which does not change the state of the trigger.

Since the DD2.1 trigger is in the zero state, high levels are maintained at the outputs of the DD1.2 valve and the hub.

When there is a signal of intrusion or short circuit input at the S input of the trigger DD2.2 a high level arises, setting the trigger to a single state. The counter begins counting pulses coming from the generator assembled on the DD1.2 valve. if during the counting period before the positive drop appears at pin 05 of the DD3 counter (about 3 seconds), the relay closes, then a low level is sent to the corresponding input of the hub, leading to the reset of both the trigger and the counter.

On admission high level signal from the output of the tracking unit to triggers DD2.1 and DD2.2 will move from the zero state to the high level. Counter DD3 starts counting.

According to the electrical functional diagram, this device consists of the following components: power supply, tracking device, recognition element. The power supply is assembled on a transformer, a KTs402A rectifier bridge, and filter tanks.

The tracking device is made on the following elements: DD1, DD2, DD4, DD5, C1, C2, C3, R1, R2, R3, K1.

The recognition element is made on the following elements: DD1, DD2, DD3, VT1-VT6, C1-C4, VD1, R1-R20.

Pre-configuration of the device

The design of modern EVA is based on the modular principle, on the basis of which functional-modular, functional-node and functional-block design methods have been developed. The main requirement when designing an EVA is that the device being created be more efficient than its analogue, that is, superior in quality of operation and degree of miniaturization.

Modern designs should ensure a reduction in cost, including energy intensity, a reduction in volume and weight; expanding the scope of use of the microelectronic base, increasing the degree of integration, microminiaturization of inter-element connections and elements of supporting structures; magnetic compatibility and integration of heat dissipation, widespread implementation of optimal design methods, high manufacturability, uniformity of structure, maximum use of standardization.

The device we are developing is a printed circuit board, therefore, parameters such as dimensions, weight, operational reliability, and noise immunity depend on the correct arrangement of microcircuit housings. The denser the microcircuit housings are located on a plane, the more difficult it is to automate their installation, the more severe the temperature regime of their operation will be, and the greater the level of interference will be induced in signal connections. And vice versa, the greater the distance between the microcircuits, the less efficiently the physical volume of the machine is used, the greater the length of the connections. Therefore, when installing microcircuits on a printed circuit board, you should take into account all the consequences of a particular placement option. The choice of pitch of chips on a printed circuit board is determined by the required density of the chip layout, operating temperature, method of developing the topology of printed circuit boards, complexity schematic diagram and design parameters of the microcircuit housing. Regardless of the type of case, the chip installation pitch is recommended to be a multiple of 2.5 mm. In this case, the gaps between the housings should not be less than 1.5 mm.

Microcircuits on printed circuit boards are arranged in a linear multi-row manner, but they can be placed in a checkerboard pattern. This placement of chip packages allows you to automate the assembly and control processes, make more efficient use of the useful area of ​​the printed circuit board and the rectangular coordinate system for determining the location of the packages.

Microcircuit housings with pins are installed on only one side of the board. The advantage of microcircuits with pin pins is the ability to automate assembly and installation.

It should also be taken into account that analog microcircuits should be placed in one place on the board to avoid interference.

The design can be realized various methods: geometric, mechanical engineering, topological, mono-structure design, basic, heuristic and computer-aided design. Let's give brief description some of them.

Geometric method. The method is based on the structure of geometric kinematic connections between parts, which is a system of reference points, the number and placement of which depends on the given degrees of freedom and geometric properties of the body.

This method is the main means of solving the problem in all cases where the design requires high accuracy of mutual movement of parts or long-term and accurate preservation of certain parameters depending on the location of parts.

Mechanical engineering method. This method is based on the structure of geometric and kinematic connections between parts, which is a system of supporting surfaces, the number and placement of which is selected to minimize the mass and permissible strength of the structure.

Installation of security fire alarm This is a mandatory measure to ensure a high level of fire safety, and the operation of the security system must be carried out without failures or malfunctions. Poorly installed equipment cannot provide a sufficient level of safety for people working at the enterprise and equipment. Early fire detection is the main task of any fire safety system. Installation of security and fire alarms in Moscow is a service provided by the service company MIPROTECH.

A modern security and fire alarm system is an intelligent system that can recognize a large number of signs of a fire or a violation of the integrity of an object. It is the system that will notify the central security point about violations and will manage other processes necessary to ensure order. For example, it will turn on ventilation to remove smoke from rooms where people may be. Therefore, installation and configuration of the system are stages that determine the future level of functionality of the entire enterprise security structure as a whole.

Important stages of installing an alarm system

Installation of a fire alarm system consists of several stages:

• installation of cable lines
• installation and connection of equipment
• setting up devices and starting the entire system as a whole

Installation of fire alarm systems is carried out in all types of premises, except for staircases and flights.
The laying of cable lines is carried out in compliance with the following standards: NPB 88-2001*, PUE, SP 31-110-2003 (for public buildings). Depending on the functionality, cable lines can be laid in wall grooves, in the space above suspended ceilings, in wall voids. But when installing fire alarm cable lines, it is necessary to use protective sleeves and boxes made of non-combustible material.
Installation of equipment, that is, controllers and detectors, is carried out taking into account the condition of mandatory room coverage. There should be no areas where it is not possible to control the air temperature and detect the occurrence of an open flame. To achieve this, there is a rule for installing at least two detectors in one room. When installing equipment, the possibility of damage to the detectors should be taken into account and eliminated.
Alarm system equipment setup is performed by a specialist in the field security systems and fire alarm.

Security and fire alarm maintenance

Scheduled maintenance of the fire and security system includes:

• Checking the functionality of the complex. Worker technical service looks at whether the operation of all components of the system meets the requirements stated in the technical specifications.
• Performance preventative work: includes activities for cleaning, soldering, lubrication and checking the condition of all elements of the system.
• Repair. If problems are found during the inspection, the maintenance technician must try to correct the problems on site.

Modernization of the security system - increasing the efficiency of the security complex

The MIPROTECH company provides services for the modernization of security and fire alarms, which includes the connection of additional sensors in the client’s protected area. Besides standard list maintenance and repair of fire alarm systems, our specialists will provide you with all the information about the state of the fire alarm system after its diagnosis, upgrade options and rules for using the system. As part of this service, outdated controllers or detectors can be replaced with new ones with high efficiency.

Guarantees for work performed

An acceptance certificate new system signed after completion of installation and commissioning work. The document specifies the warranty for the work performed. Additional repair and maintenance work on the system performed after its delivery is entered into a separate log of service work performed.

Type of object: Industrial facility (plants, factories, enterprises)

This project was developed and implemented by our company.

The customer, Pavlodar Petrochemical Plant JSC, required to receive data from protected objects (arming and disarming, alarms, etc.), keep a log with the preservation of all events, arm and unarm the premises by users without the participation of the console operator, and also in the future with the possibility of switching the entire plant to this system. For this reason, your production system was selected.
The customer also wished that all objects to which the user has access could be placed and removed, as well as view its status (taken/removed) from the central entrance. Our engineers and programmers coped with this task perfectly. At the moment, the development has no analogues in Kazakhstan.
Now let's move directly to the racks (there are two of them). Prefabricated floor stand housing for indoor use. Consists of an upper module and a support stand with an Em-marine (Z-2 USB) reader.
Characteristics:
- Housing 1.5mm steel;
- Motherboard Gigabyte;
- RAM 4 GB;
- Hard SSD drive 128Gb;
- Power supply 400W;
- Reader: E-marine(Z-2 USB);
- Touch Monitor 19"" LCD;
- OS Windows x64 10 pro.

An example of working with a construction site.
Initially, advertising information (set by the customer) is displayed on the racks. To activate, the employee must place and hold their badge on the reader. After checking the pass, if the employee is not registered in the system, the counter will display an unknown key. If the pass is confirmed, the user will be shown all its sections available for management. Now the employee selects the section he needs to set/remove. Next, he is shown options for the selected section: “Arm” - arm, or “Disarm”. An inactive button will be grayed out. If removal/installation is successful, the stand will display a message or notify you that it is impossible to perform this manipulation. When the operations are completed, the employee withdraws his pass and the system goes into standby mode.
Over time, our complex was debugged, tested, improved and implemented at the plant. He successfully copes with his tasks. A bonus is that our complex is modular, which allows you to easily use an unlimited number of racks with one server.

The following products were used to implement the project

Recently, specialists from the Atlant production company have been paying increasing attention to problems associated with the modernization and repair of existing fire safety systems. There is an explanation for this - the number of human casualties as a result of fires is incredibly high.
Considering that during the continuation period economic crisis Not everyone can afford to install a new type of fire alarm; we offer our clients a wide range of services related to the repair and restoration of existing fire alarm lines.

The fire alarm system (FS) is a highly reliable device, but sometimes it happens that it fails. The reasons for this can be very diverse. Breakdown can occur due to improper care, as well as if the fire alarm is not used correctly. Well, or malicious damage to one of the system parts is possible. They affect the quality of work and operating conditions of the fire system. Fire alarm repair may be required if its devices are located in areas of high humidity, high temperature. It is necessary to carefully monitor how the fire alarm system works, whether it is exposed to mechanical or climatic influences, and whether there is dampness on the walls and ceiling of the room where the main unit of the system is sprayed. Also, the need to repair fire alarms will arise if the alarm system is systematically exposed to voltage surges.

Fire alarm modernization and repair

Our company offers you not only the purchase of high-quality equipment, but also warranty and post-warranty service, which means that when purchasing a security and fire alarm system from our organization, you can be sure not only of its reliable operation, but also of high-quality maintenance of the system. If you purchased fire alarm systems from third parties, we will also be able to provide you with high-quality fire alarm repairs at a very reasonable price.

Warranty service means a systematic check of the system, its technical inspection and elimination of faults reflected in the operational documentation, determined by the technical regulations for operational warranty service. Therefore, repair of fire alarm systems is also included in the warranty service program technical faults the entire fire alarm system.

The main activity of our company’s specialists is the constant modernization of security systems, maintaining their performance and repairing them. If you buy the most perfect system today, you may find it imperfect tomorrow. Any system, not only fire safety systems, will sooner or later face the need for improvement. Our company is not limited to carrying out such procedures as repairing fire alarms; we also specialize in modernizing systems, expanding the capabilities of the fire alarm system and increasing its capacity.

Tasks of maintenance and repair of fire alarm systems

Fire alarm repairs are carried out by specialists in the field of installation and operation of fire alarm systems. This is a complex work, since only together it is possible to carry out calling the routes, while simultaneously identifying existing system faults. At the same time, repairs to the control panel itself are not carried out, since it is much more expedient to replace the faulty panel with a new one. An exception may be a foreign-made station, if it is quite expensive or its model has already been discontinued. If we compare the average price of imported fire alarms in Moscow and stations Russian production, then a domestic device will cost only three thousand rubles, while an imported one will cost tens and hundreds of thousands.

Maintenance and repair of fire alarms are carried out in order to maintain fire automatic equipment in good condition throughout its entire service life.

In order to ensure that the fire alarm is activated in the event of a fire, as well as to avoid false alarms, the maintenance and repair of fire alarms includes the following steps:

Monitoring the technical condition of fire automatic system installations;
regular compliance checks technical specifications, including testing the automation for compliance electrical parameters technical documentation requirements;
eliminating the consequences of the influence of unfavorable climatic and production conditions on the security and fire installation;
identifying the causes of false alarms and repairing fire alarms, including their elimination;
carrying out a technical examination to determine the deadline for using the fire automatics installation, upon reaching which the repair of the fire alarm becomes inappropriate and operation is impossible;
regular analysis and obtaining general information about technical condition fire alarm, allowing you to maintain the installation in a state of increased reliability during operation.

Fire alarm repairs may include:

Checking and testing the functionality of the fire alarm station, including checking the control panel and control panel;
- testing the functionality of fire, smoke and heat sensors;
- continuity testing of cable routes and loops;
- identification and elimination of cable breaks for fire alarms;
- replacement of smoke and manual call points at the fire alarm station;
- if a malfunction of the control panel is detected during testing, its repair and replacement.

The repair also includes cleaning undamaged fire alarm sensors by blowing them out.

When maintaining fire stations and repairing fire alarms, our specialists most often encounter problems such as broken fire alarm cables, which is a consequence of unauthorized repair work by third parties. There are also contact failures in fire detector bases, which is caused by oxidation of connector contacts in damp rooms. The fire alarm system breaks down and therefore requires repair due to dust and contamination of the working chambers.

As we can see, the main causes of fire alarm failure occur due to non-compliance with operating standards, independent attempts to troubleshoot problems, or due to the end of its operational life.

Work order Maintenance, provided not only by standards and legislative acts, but also including our norms, developed empirically, include the following points:

Carrying out fire alarm repairs and maintenance within a timely manner agreed with the customer;
- immediate arrival at the facility entrusted to our company, in case of detection of problems, for their immediate elimination, i.e. fire alarm repairs. In this case, the customer is obliged to take measures to eliminate factors affecting the fire safety system and causing damage to it;
- all order forms, calls received from the Customer, in mandatory are recorded in a log called the “Call Log”;
- in cases where a technical examination is necessary before repairing a fire alarm, the inspection is carried out in the presence of representatives of third-party specialists who are not interested in the results of the checks.
By contacting us, no matter how complex the breakdown may be, and no matter the reasons for it, our company’s specialists will cope with any problem that arises, and your Fire safety will always be at the highest level!