Analysis of How to Make Security System Integration Well for Large Security Projects

Prior to the integration of security engineering systems, the contractors at all stages must first understand the stage work and contents of the entire project so as to clearly understand the details of the system integration in the project. First of all, as far as general public works are concerned, equipment inspection will be carried out after the equipment enters the site. Then the equipment will be further assembled and tested on the site where it is placed. When the equipment is completed and assembled and fixed at the site installation site, After all circuit connections and power supply are completed, enter the system integration test and overall system integration test phase. However, the general project in the equipment installation is completed, and after the operation test, it directly into the acceptance stage. Therefore, engineers must master two different pre-integration phase of the engineering system, and do a good job of the next system integration project. And how do these integrated implementation steps work?

In the security control system integration project, we must first consider the possibility of software integration, and then determine the way the hardware interface. In the integration of software, you can proceed from the most basic communication protocols, or by incorporating software vendors based on an open API written by the integrated software platform. At present, as the compatibility or consistency of integration released by most software platforms is set toward the test results of partners based on ONVIF or PSIA or other third and fourth standard protocol organizations, System integration steps for hardware in communication protocols.

Software communication protocol integration

The integration of communication protocols must first consider the consistency of the software workbench (OS), such as the compatibility of Windows and Linux, and the data transmission format when integrating subsystems. Because the system and the system must communicate in the same language to communicate, the way to do this is to use the standard set by the communication protocol as the same language for the data transfer command and the response command format.

After the completion of software agreement integration, to integrate the hardware between the various systems, it is much easier. Many security devices on the market are uniquely designed or have unique specifications, but basically system integration is done with a common standard architecture, so the uniqueness of some products may be overlooked in system consolidation.

According to this mode of integration, security, monitoring, access control, security, alarm, fire radio, intercom, remote data collection and other security control systems can be integrated and operated on the same working platform. The integration of these systems have certain rules and norms, whether linked or triggered start-up, or logical sequence scheduling operations, can be achieved through a certain degree of system integration steps.

Can not ignore the details

When performing engineering system integration steps, you must consider the details of the collocation between each subsystem. For example, between the monitoring system and the access control system, in the past, the video was not switched on and the video door was determined. In fact, effective access control and monitoring integration should not only interact with each other only, but should be more positive to consider the possible damage caused by an access error, how to use the monitoring system to help make up for tracking? At the same time, but also to allow monitoring not only to show the video , But should be able to take the initiative to control all relevant access control area video, real-time error and incident status.

In addition, the integration between fire alarm and alarm broadcasting should not only generate alarm sounds and trigger pre-recorded broadcasts, but also alert firefighting areas where alarms occur, play evacuation evacuation guide broadcasts, launch guide indicators or billboards, or even combine video Monitoring system to provide life-saving staff to grasp the disaster relief status. In this system integration process, there are some small details that can be easily overlooked.

Power conversion compatibility: For example, neglect of AC and DC dual-use equipment used;

Interchangeability in letter formats: eg, neglecting the interchangeability of RS-485 and RS-422;

• Isomorphism on bits: For example, communication protocols often ignore signaling because they ignore bit-checking, resulting in the delivery of signals between integrated systems without control.

Transmission conversion compatibility: for example, to ignore the multi-mode, single-mode optical signal transmission interchangeability, resulting in unnecessary wire exchange situation.

In order to avoid the above details being neglected in the implementation, engineers should make their own system function checklist and confirm the function integration items one by one.

Eight "miscellaneous diseases" and solutions

System integration is the key to the success or failure of the project. Any negligence of small details may become a big issue. Therefore, it is more necessary to think ahead of all possible problems before implementation and to anticipate solutions in advance to deal with them at any time. The following are eight common system integration issues, and propose solutions to the problem.

1, the voltage drop or lack of current

When the original system operates alone, it can provide sufficient power. However, when the system is integrated, the voltage drop and / or current shortage occur, which leads to the unstable state of the system. solution:

• Calculate the power requirements and form categories for all system integrations;

· Separate the same DC and AC power and rearrange the power junction, fuse switch capacity and power control loop, unify the UPS power supply system load and switch to Switchingpower to supply small area DC power to stabilize the voltage;

All the system open, operation, one by one measurement The maximum current value of each power supply switch in the safe load range, to ensure that the power integration.

2, after the integration of some functions can not be implemented

Everything was fine when the system was running alone, but after integration with the main system platform, it found that some of the functions were not implemented or were affected by other subsystems and could not function properly. solution:

· Start and operate all subsystems and execute all the project functions. Perform on-system test one by one to confirm whether each system is working properly after online connection and find execution problems from the database or background program.

· If system operation problems occur due to the merger of other systems, offline the subsystems one by one to clarify the sources of subsystems that affect the operation of the system, and then compare the problems in the system data one by one to grasp the problem points, smooth processing or Modify the agreement.

3, after the operation is not synchronized

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