The intrusion alarm system design is very important. Now we find that many people in the installation and use of the intrusion alarm system did not carry out serious on-site investigation, did not combine the on-site environment to design the intrusion alarm system effectively. In addition, they choose the intrusion alarm devices freely; install the intrusion alarm system freely. This is a noteworthy issue in the promotion and application of intrusion alarm systems at present.

Generally speaking, the intrusion alarm system design should pay attention to the following 6 aspects, which are clearly required in the relevant standards of the intrusion alarm system.

1 Intrusion alarm system design should be standardized and practical

The intrusion alarm system design must be based on the actual investigation of the site. It is necessary to carry out the intrusion alarm system design according to the environmental conditions, the object of prevention, the scale of investment, maintenance and the way of receiving alarm. The intrusion alarm system design should meet the requirements of the relevant risk level and protection level standards, and meet the requirements of the relevant design specifications, design task documents and the management and use of the builder. The selection of intrusion alarm devices should meet the requirements of relevant national standards, industry standards and relevant management regulations.

2 Advanced and interchangeability of the intrusion alarm system

The intrusion alarm system design should be moderately advanced and interchangeable in technology, leaving capacity for the expansion and modification of the system.

Based on our experience in our work, generally, the capacity of the intrusion alarm system should be 20% redundant.

3 Accuracy of the intrusion alarm system

The intrusion alarm system should be able to accurately and timely detect the intrusion behavior, send an alarm signal, and have clear and obvious instructions on the origin of the intrusion alarm signal, tamper alarm signal, and fault signal.

The intrusion alarm system should cooperate with the intercom system for sound review. It is best to link with the video surveillance system, which can perform simultaneous sound and image reviews.

It should be noted in particular that the intrusion alarm system does not allow for missed alarm.

4 Integrity of the intrusion alarm system

The intrusion alarm system should take preventive measures against all paths of the intrusion prevention area, and should strengthen preventive measures against physical protection weaknesses that may exist on the invasion path. There should be no blind zone within 5m of the protected target.

There are often issues with the integrity of the intrusion alarm system. We found in daily acceptance and inspection that many intrusion alarm systems have many loopholes, the key is the lack of integrity concept in design. To solve this problem, we need to rely on the full understanding of the standard content of technical designers and accumulate rich experience in intrusion alarm engineering.

5 The depth protection of the intrusion alarm system

The intrusion alarm system design should adopt the depth protection system. Sub-regional and hierarchical fortifications should be implemented for the entire preventive area according to the risk level and protection level of the protected object. A complete defense zone shall include four different types of defense zones, perimeter, surveillance, protection and restricted zones, for which different protective measures shall be taken.

An alarm center shall be established in the protection or restricted zones, and one or more sub-alarm centers may be established if necessary. The alarm center and sub-alarm center shall be located in the restricted zone, at least in the protection zone.

Intrusion alarm systems designers need to pay sufficient attention to the understanding and application of this point. At present, the depth problem is noted in the prevention of the museum system, bank vaults, and custodial warehouses, but in other aspects, the depth of the intrusion alarm system is relatively lacking, many of which are isolated and lack hierarchy.

6 Linkage compatibility

Intrusion alarm system should be able to link with video surveillance system, access system. When the intrusion alarm and other systems are jointly designed, the system integration design should be carried out, and the systems should be compatible with each other and can work independently. The priority of the intrusion alarm system is after the fire alarm.