What is the working principle of linkage alarm linkage alarm

What is the linkage alarm

Action with alarm, when an alarm event occurs, the related equipment other than the alarm device is triggered to operate (such as alarm image review, lighting control, etc.).

How does the linkage alarm work?

Alarm linkage monitoring means that monitoring equipment, especially the searchlight, can be turned off most of the night, and the alarm system is normally turned on 24 hours.

After the alarm system is triggered, the alarm host sends a signal to the linkage module to open the monitoring device and the searchlight. The monitoring device is connected to the AI ​​(analog input) or DI (digital input) channel of the monitoring host, and the monitoring host receives the monitoring device. The alarm signal (the mechanism of the analog alarm is that the voltage exceeds the preset threshold range to generate an alarm. The mechanism of the switch alarm is the comparison between the switch of the channel and the preset normal state, and the change is the alarm) will pass Software presets or hardware (some products can be directly linked by hardware) will output a binary signal to the corresponding DO (digital output) channel, linked to the device switch connected to the DO channel. For example, the high temperature alarm linkage standby air conditioner is turned on, the humidity is too low, the linkage humidifier is turned on, the engine room leaks the engine room alarm system, the illegal intrusion linkage video and the computer room lighting, etc., the linkage between the alarm system and the monitoring system mentioned above is generally The alarm system should provide a dry node, connect to the monitoring host through the dry node, and link other devices.

The basic implementation principle of the networked alarm system:

The whole system is divided into three parts: user equipment, channel, and alarm center equipment.

1, the user equipment and its role:

User-side networking equipment mainly includes: wireless alarm host, infrared, door magnet, emergency button, smoke, gas leak, infrared radiation, infrared fence wireless, rolling shutter clutch sensor and other wireless and wired accessories.

(1) The networked alarm host has two states: the armed warning state and the disarmed standby state; it can receive the alarm signal sent by the device (through the wireless mode and the wired side), and the networked alarm host will automatically connect to the network through the public telephone network in the armed state. The alarm center sends alarm reports, alarm information, and disarming status information.

(2) Infrared is divided into two types: curtain and wide-angle. It will find moving objects (with thermal radiation) within the detection range and send electronic signals to the alarm control panel. When there is no one in the scope of protection, when the alarm control host is in the armed warning state, once someone illegally invades, the infrared will immediately find and send an electronic signal to the alarm control host, and the alarm control host sends an alarm report to the alarm center to prevent the thief from invading. . The scope of the curtain is a plane, generally used to prevent windows and other planes; wide-angle prevention is a space.

(3) The door magnet is installed on the upper window of the door. When the door and window are illegally opened in the armed state, the door magnetic state changes and an alarm occurs.

(4) Emergency button: The emergency button is equivalent to a switch, which is used to change the state of the alarm circuit to achieve the purpose of the alarm, and is simple and convenient to use. Financial banking systems, shops, supermarkets, enterprises and institutions can quickly get timely assistance from the alarm center when a robbery occurs or when a home user has a patient, an elderly person, or when an emergency button is pressed. For more intrusion alarms and burglary alarm accessories, please refer to the Network Alarm Product Series.

2. Channel and its role:

The networked alarm system transmits information through the public telephone network. The performance is stable, and the transmission alarm information is timely and reliable. It is also a relatively mature and mature networking method adopted today. It mainly plays the role of a medium, and connects the alarm center with the terminal alarm host, so that the alarm center can receive the information reported by the front-end equipment in time and accurately, and complete the operation of the whole system. There are many transmission and networking methods for Xinguang's technology networked alarm system: public fixed telephone network, GSM wireless network, GPRS wireless network, internet broadband network, and 3G network. The appropriate networking method can be selected according to actual conditions and requirements, and the market.

3. Networked alarm center equipment and its functions:

The core part of the networked alarm center is the computer alarm management software, which determines the basic functions of the center. At the same time, the selection of devices such as the server, terminal network burglar alarm host, and burglar alarm accessories also affect the overall performance of the center. Xin Guang'an “Anbaotong” large-scale intelligent network management platform belongs to the intelligent computer alarm management software and is the latest version of the alarm management system software. Xinguang's alarm platform is suitable for the series of alarm host network of Andingbao agreement, and is applicable to alarm hosts of other various protocols. Using the Chinese Windows Server operating system, the operation of the window is simple and easy to use, and the function selection and operation are performed with the mouse and the keyboard, which is convenient for management and maintenance.