Large-scale networked alarm security industry application analysis
DANYANG TRUST IMPORT & EXPORT COMPANY LIMITED , https://www.dytrust-tools.com
For large alarm area networking, the traditional PSTN communication mode has reached an inflection point. Since the actual voice dialing physical connection must be established before communication, the time is longer. It takes more than 10 seconds or even 20 seconds to complete a report. At the time, there is a risk that the alarm signal cannot be delivered to the alarm center in a timely manner. In particular, for some users who cross a multi-area and large-scale PSTN network, the risk will be greater. In addition to the slow speed, based on the PSTN-based alarm network also other inherent flaws, it may be more probable: traditional telephone alarm is a one-way communication, the alarm center is passively receiving information reported by the front-end host.
In addition to the network alarm, the center can access the front-end equipment in addition to receiving the information reported from the front-end; the traditional telephone alarm, the line fails, the alarm center is difficult to find, and the network alarm, once the transmission fails, the alarm center will immediately display; With traditional telephone alarms, the center often receives unclear information. These are related to line noise and faults, and network communications can greatly improve transmission quality and system reliability.
The security industry has fully realized the various drawbacks of PSTN networking, and with the increasingly mature network technology and application trends, the network upgrade of anti-theft alarms in networked transmission technologies has shown irresistible trend. The words have to say, although we have fallen in front of the PSTN, but based on very mature telephone switching technology, its R & D is not at the beginning of the alarm application, so people have not forgotten its glorious history "more than over", it is understood that now Although many alarm centers throughout the country have adopted IP network alarm networking, the PSTN is still reserved as a backup solution and is often used as a dual-network alternative.
The development of advanced technology has always been the “wave behind the wavesâ€. In the anti-theft alarm system, the IP cable network architecture has just been discussed, and the new 3G technology will once again create a new era of alarm wireless transmission. Along with this, people are paying more attention to the multi-channel, convenience, and promptness of alarm networking, alarm information forwarding, and alarm linkage. In addition to the wired PSTN and IP networks, wireless technology has undoubtedly become the focus of industry attention. Due to the convenient installation and maintenance, the current wireless alarm system occupies a growing share and is gradually being widely used in home security and small business alarm systems. In addition, from multiple manufacturers' booths, it is also possible to find out that the alarm system alarm report communication mode presents a variety of coexisting forms, such as the bus from the most basic RS485, CAMBUS, PSTN, TCP/IP, GSM, GPRS , EMAIL, SMS, etc., cover almost all communication methods, allowing users to combine their choices. In the transmission mode, the alarm control host generally has both a bus + a wired network + a wireless network. However, although it is also taking the road to networking, the exploration ideas of various companies have their own merits. Some options are the upgrading of old and mature systems, and the use of “patch†methods to increase communication function modules, while others are “breaking new earthâ€. With a new architecture, the new features are all in board design.
This year, Honeywell launched a networked alarm system solution that is built on its original mature PSTN alarm system based on the network upgrade. It uses the Honeywell IPM network module to provide data transmission between the UART interface and the Ethernet interface. It is based on the TCP/IP protocol to provide reliable communication and real-time monitoring. The user remotely controls the alarm host through the IP module. When the alarm occurs, the alarm host sends the alarm information to the remote control center through the network. In addition, the wireless network module can also be installed in some areas that are difficult to be wired due to conditions. As a result, the information transmission speed is less than 2 seconds, making the alarm more efficient and making large-scale networking smoother.
In addition, by increasing the network communication bandwidth, multimedia information can be easily superimposed to enable fast alarm audio and video review. IP+PSTN communication mode, dual network and dual reporting, mutual redundancy. Each network device has a heartbeat function to interactively detect whether each alarm terminal is normal, allowing users to enjoy services similar to the dedicated line function. Once a line or device fails, the alarm is immediately available, and the previous phone line failure no longer exists, greatly improving the System security. "By using the bus system in mainland China and the good compatibility of products, I believe that the application of the network alarm system solution will be fully erupted." In the explanation, Chen Wei, Honeywell Security Group China market manager said .
Another old anti-theft alarm tycoon in Shenzhen - the United States brought the "four-in-one video alarm networking" products. It adds GSM, TCP/IP, and 3G access to traditional PSTN access methods. Based on telephone dialing and bus transmission, it supports GSM dialing, supports TCP/IP network alarming, and provides users with comprehensive interactive system control. . Users not only benefit from real-time SMS, email notifications and alarms, remote system and home appliance intelligence, but also enjoy remote video, status confirmation, defined alarm settings and more.