Security alarm system applied in enterprises, institutions and communities

Everyone needs a safe and comfortable living environment and working environment. People's personal safety and property security need protection. The personal safety, property safety of the collectives, enterprises, institutions, organizations, various organizations at all levels, and even the country’s property safety all need protection. With the advancement of modern high technology and people’s awareness of prevention, various security technology prevention facilities have emerged. Among them, the security alarm system is one of the most important and representative security technology prevention facilities. In fact, according to different alarm functions, the security alarm system can be divided into professional safety alarm systems and non-professional safety alarm systems.

The so-called professional safety and security alarm system refers to a special alarm system used by certain specialized industries to prevent accidents or accidents that may jeopardize the safety of people and property. For example, anti-fire alarms, anti-poisonous and poisonous gas leak alarms, anti-chemical substance leak alarms, anti-radioactive material leak alarms, etc.

Instead of a professional security alarm system, it is actually an anti-theft and anti-illegal intrusion alarm system. According to actual needs and different alarm functions, the anti-theft and anti-illegal intrusion alarm systems can be divided into anti-theft and anti-illegal intrusion alarm systems for enterprises and institutions, and household and perimeter integrated networked alarm systems and homes that are mainly suitable for residential communities and households. There are four kinds of anti-theft and anti-illegal intrusion alarm systems such as security alarm system and perimeter alarm system. This article only discusses non-professional security alarm systems.

Among them, the anti-theft and anti-illegal intrusion alarm systems for enterprises and enterprises are mainly used for anti-illegal intrusion alarms in enterprises, institutions, factories, materials warehouses, financial institutions, business establishments, supermarkets, shopping malls, institutions, key security units, and high-security sites. .

Home & Peripherals Integrated Networking Alarm System integrates home security alarm system and perimeter alarm system. It adopts a set of alarm management center equipment and a set of alarm management software to uniformly manage home security alarm system and perimeter alarm system. The following is a detailed introduction to the anti-theft and anti-illegal intrusion alarm systems of enterprises and enterprises, as well as the integrated networked alarm system of home & perimeter.

Anti-theft and anti-illegal intrusion alarm system for enterprises and enterprises

The anti-theft and anti-illegal intrusion alarm systems of enterprises and institutions generally consist of front-end equipment (such as front-end intrusion detectors, front-end modules), local alarm control equipment (such as local alarm controller, local sound and light alarm equipment, special power supply), and local alarm management center equipment. And alarm software, remote alarm transmission control equipment and transmission network and other four parts. Its system network communication generally adopts one-level bus or two-level bus and hierarchical structure, and has two alarms of local alarm and remote alarm, and even three alarm modes. Its communication bus uses RS485, CANbus extensively, also adopt the custom bus way.

Front-end intrusion detector

In the entire system, front-end intrusion detectors include passive infrared detectors, active infrared detectors, vibration detectors, glass break detectors, and emergency alarm devices. The front end module is the address coding module of the front end intrusion detector used with the bus system alarm controller. For multi-wire alarm controllers, no front-end modules are required.

Local alarm control equipment

Local alarm control devices include local alarm controllers, local audible and visual alarm devices (such as sirens, lights, voice alarm buzzer and horn, searchlights, etc.) and dedicated power supplies. The local alarm controller is available with 8, 16 (or 15), 24, 32, 64, 128, 256 and other defense zones. It uses a bus connection between the front alarm detector and it is generally only when the zone number is less than or equal to 8 zones. , to allow the use of split-line connection. The alarm transmission network uses a separate wired dedicated transmission line.

Local Alarm Management Center

The local alarm management center also includes a local network controller or network card, a management computer and a number of auxiliary devices (such as alarm instant printers, alarm linkage devices, led display screens, LCD displays, analog electronic display panels, etc.) that can be centrally managed. 8 local alarm controllers. The management center supports the electronic map display, which can reflect the alarm status of the system in real time on the general plan of the prevention area, and can indicate the alarm point address through sound and light. In addition, the management center can also record the alarm time, alarm type, alarm situation, etc.; when the alarm can automatically pop up an alarm dialog with alarm voice prompts and alarm confirmation, and a variety of record storage functions: such as alarm records, alarm confirmation records, Arming records, disarming records, equipment failure records, equipment recovery records (equipment failures have been excluded records), system log records; can also be classified according to the type of alarm, alarm time, cloth, disarm records, etc. Supports instant printing of alarm information with anti-sleep warning information. Whether the alarm linkage device needs to be linked can be set and changed in advance.

Remote alarm transmission control equipment

The remote alarm of the enterprise and business anti-theft and anti-intrusion intrusion alarm systems is an alarm to the 110 Alarm Management Center. The remote alarm transmission control device may be a PSTN voice dialer or a GSM voice alarm communicator, and the transmission network includes a PSTN cable network and a GSM wireless network. In the event of an alarm, alarms can be sent to the 110 Alarm Management Center through the PSTN and GSM, and alarm messages can also be sent to other phones and mobile phones that are set by the user. Usually 4-12 sets of alarm phone numbers can be set, and the maximum number of digits of the phone number is 16 bits.

Among them, the telephone voice automatically reports the alarm situation and can report the unit and address where the alarm occurred: At least 20 seconds of alarm language can be pre-recorded, which can be modified, re-recorded and replayed as needed to check the recording effect. At the same time should be able to grab the line dialing, priority alarm, to prevent the perpetrators from attempting to enter the phone to occupy the alarm line to steal; can intelligently identify the owner whether to answer the police, once the police, no longer dial the number; preset information protection function: the user enters the alarm phone Numbers and alarm recordings will not lose information due to system power loss. PSTN phones are stolen, disconnected, and short-circuited, and can be alarmed by GSM.

In addition to the above functions, the enterprise and enterprise anti-theft and anti-illegal intrusion alarm systems also have some extensible functions. For example, the LT-B2102A anti-theft and anti-intrusion alarm system developed by Shanghai LianTeng Information Technology Co., Ltd. also has a telephone remote control function. The user can remotely arm the phone at a remote location or remotely control the alarm linkage output to control the alarm site alarm device, such as turning on the searchlight and alarm alarm. Use the phone or mobile phone to remotely confirm the alarm. When the remote control of the phone is performed, the user's password is automatically prompted. Can expand CANbus interface, support perimeter decoder and perimeter field controller. The maximum number of devices is 110. Scalable wireless receiving function: support for wireless alarm front-end detection equipment, support for full arming and emergency help alarm via wireless remote controller.

Local alarm controller

The local alarm controller is the core component of the anti-theft and anti-illegal intrusion alarm system for enterprises and institutions. It and the local sound and light alarm, dedicated power supply, front-end intrusion detectors, front-end modules, can form a minimum system for the anti-theft and anti-intrusion alarm system of enterprises and institutions. The entire anti-theft and anti-intrusion intrusion alarm system adopts a modular design. Add a variety of function expansion boards (or function expansion modules) based on the minimum system to form an alarm system that meets a variety of different functional requirements. If the minimum system is required to become a more expansive product development platform, its core processor, such as still using 8-bit microprocessors, is already incompetent. In recent years, ARM, as the most widely used 32-bit processor architecture in the embedded field, has become the standard CPU in various application fields. The ARM processor technology is becoming the preferred core processor for local alarm controller application development. The local alarm controller supports a variety of modules and interfaces. Such as: wireless receiver module, wireless remote control, telephone remote controller.

The storage capacity of the local alarm controller is designed for alarm records that can be stored for 30 days. The alarm records include records for arming, disarming, alarming, alarming, equipment failure, equipment failure troubleshooting, and corresponding time information. The CANbus expansion interface can support 110 devices with CANbus interfaces, such as perimeter decoders and perimeter field controllers. The local network management can be networked with the alarm management center computer, and at least 8 local alarm controllers can be networked, and an alarm information instant printer is also supported. Alarm information linkage processing supports analog electronic maps. The PSTN interface and the GSM interface support alarms to the 110 Alarm Management Center through PSTN and GSM, respectively. At the same time, the alarm information can be transmitted to other pre-set phones and mobile phones via PSTN and GSM.

Home & Peripherals Integrated Network Alarm System

The following takes Shanghai Liantan's LT-B2102 alarm system as an example to introduce the basic architecture and system components of the integrated home and perimeter alarm system. The alarm system function is positioned as an ultra-large community practical integrated alarm system integrating home alarm and community perimeter alarm. The system capacity is 4×110×32=14,080 nodes, and it can support 1,080 households. Each household can have 15 defense zones. The basic architecture of system network communication adopts 3-level bus and multi-level hierarchical structure: that is, the first-level bus is the system backbone bus, adopts CANbus, the second-level and third-level buses are the system branch bus, and adopts RS485. The hierarchical structure consists of a central management layer, a transmission control layer, an on-site control layer, and a front-end detection layer 4-layer hierarchical structure.

Home alarm system composition

As far as the home alarm system is concerned, the management center layer (corresponding equipment such as a centralized controller) and the transmission control layer (corresponding equipment such as a unit controller) are the main bus (the first-stage bus CANbus) and the transmission control layer (corresponding to Between the equipment (such as the unit controller) and the field control layer (the corresponding equipment such as the alarm host, the decoder) is a branch bus (second-stage bus RS485). If the front-end detection layer adopts the split-line mode and the alarm host uses the split-line alarm host, the system is a two-stage bus structure. For example, if the front detection layer adopts the bus mode and the alarm host uses the bus system alarm host, the system is a three-level bus structure.

Perimeter alarm system

In terms of the perimeter alarm system, the system (partly) using the perimeter field controller has no transmission control layer and only the field control layer. Therefore, the corresponding field control layer equipment is the perimeter field controller, and only the trunk bus (No. One-level bus CANbus), the system is a one-level bus structure; while the system using a perimeter decoder (part), the perimeter decoder is a transmission control layer device, and the main device of the field control layer is a perimeter front-end module, management Between the central layer (corresponding equipment such as the centralized controller) and the transmission control layer (the corresponding equipment is the peripheral decoder) is the backbone bus (the first-stage bus CANbus), and the transmission control layer and the field control layer support The dry bus (second-stage bus RS485) has a two-stage bus structure.

Home alarm host function

At present, there are many kinds of home alarm hosts common in the domestic market with different performance, but they must have some essential basic functions. The basic functions are as follows:

Can access active infrared, passive infrared, magnetic door, window magnetic and other front-end intrusion detectors; can provide power supply for all types of front-end intrusion detectors, and has an undervoltage alarm or power failure alarm function;

· Four types of deployment: 24-hour deployment, partial deployment, full deployment, and time-delay deployment; requiring flexible deployment and disarming methods, one-button full arming or full disarming, and optional arming and arming alone; wireless Remote arming function and wireless remote emergency help function. Among the various alarm hosts, the number of wired zones for multi-wire alarm hosts can be 4, 6, and 8 zones, and the number of expandable wireless zones is 3, 5, and 7 zones. One of them is a 24-hour zone, that is, fixed. The 8 zone is used as a special zone for emergency alarm devices. The bus system alarm host supports 15 wired zones. One zone (fixed 8 zone) defaults to the emergency zone.

Release date: 2006/9/8 13:26:17

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