Ask for help, is the perimeter of the museum suitable for vibrating optical fibers, how to design an

I think it is more suitable to use a fiber optic alarm system in this kind of perimeter of the museum, according to the relevant specifications and requirements, generally different technologies, a variety of systems, all-round monitoring. Vibrating fiber optic cable is a cable-based alarm system that is suitable for irregular perimeters. The walls of museums are generally antique buildings that cannot be easily damaged, so we can install the same color protective net on the wall and lay the optical cable on the protective net.

When someone tries to climb over the fence, the vibrating fiber optic cable is triggered, and an alarm is sounded. In addition, vibrating optical cables can be embedded in the walls of the museum to prevent people from digging holes or digging into the walls. (The inside of the fence can also consider installing a leaking cable alarm system).

** monitoring system and alarm system to form a linkage relationship, the distance between the defense area should not be too long (less than or equal to 200 meters), the perimeter defense area alarm correspondingly, the ** surveillance camera at the same time to catch the ** picture.

The museum is generally an area with relatively high security level requirements, and the museum's security system generally includes 7 categories: monitoring, intrusion alarm, patrol, perimeter, UPS, access control, and intercom.

As a perimeter alarm equipment, vibrating optical fiber should be included in the intrusion alarm in the museum security system, so the installation of vibrating optical fiber in the museum has a theoretical basis.

Secondly, according to the functional division of the internal area of the museum, it is divided into seven functional areas: exhibition area, audience service facilities, collection storage area, technical room, administrative office room, academic research room and equipment room. According to these regional divisions, we can understand that the security level of the museum is relatively high, and a high-level burglar alarm product is required for protection.

San'an Gude vibrating optical fiber is a perimeter alarm equipment, its products can effectively prevent intruders from digging the wall or climbing over the museum for destruction, but also can be for the exhibition area and the collection area for separate alarm protection, once an intruder approaches or steps on the perimeter layout of the optical cable, the system immediately sends an alarm signal to scare off the intruders and ensure the financial affairs of the museum. For the shape design of the vibrating optical fiber, the alarm manufacturer will also design a beautiful installation method according to the external structure of the museum and the actual use effect, hoping to help you.

Museums are OK, but if you use prisons, you will often make false positives.

You can refer to this.

Beijing Chenguang Yichang Technology ****.

You can refer to it!

Installation:

1. The installation method of wrought iron medium.

1》Optical cable laying method:

When laying fiber optic cables on wrought iron, the number of sensing cables should be increased to ensure that the intrusion signal can be reliably sensed due to the rigidity of the wrought iron. By analyzing the action characteristics of the intruder climbing over the fence, it is recommended to lay a sensing optical cable along the top, middle and bottom horizontal iron railings of the wrought, as shown in the figure.

In the wrought iron fence, some wrought iron will be installed on the column, if the area of the pillar is not large, the fiber optic cable can be directly over the column, as shown in the picture above. However, some pillars have large cross-sections that can be easily accessed by intruders, so such areas must be protected. An iron mesh can be installed on the top of the pillar, and when laying the optical cable, the sensing optical cable is laid to the iron mesh, as shown in the figure.

2》Installation method of the collector:

The collector can be attached to the wrought iron pillar. At a distance of about one meter from the ground, the splice box is securely fastened to the medium with clamps or straps. If there is a wide bricklaying column between the two wrought irons, the splice box can be fixed to the column and fastened with expansion bolts.

Straight lines are laid on barbed wire, wrought iron fences. Fiber optic cables cannot be laid under concrete floors.

Due to the lack of core technology, most domestic manufacturers of vibrating optical fiber lag behind the world's top technology for 20 years, and there are very high requirements for installation, which is the main reason for the popularity. At present, Nanning Guantai technology's optical fiber fence technology is excellent, as long as the vibration optical fiber is tied to the physical fence with stainless steel cable ties, the construction is very simple, Nanning Zhongguancun Science and Technology Park is only used to make the clever closure, originally 20 security configurations, now only 6 people, the false filial piety rate is very low, the false alarm rate is almost 0, just find a worker to install, China finally has a company really mastered the core technology of optical fiber vibration, it is gratifying.

1. San'an Gude vibrating optical fiber laying method:

When the vibrating optical fiber is laid on the fence, the following methods can be selected according to the different fences to lay the vibration sensing optical cable linear, parallel line, and S-type blue finger.

Linear laying: The vibrating optical fiber should be laid at a position where the height of the iron mesh is about one meter from the ground, and the vibration sensing optical cable should be tightly tied with the fence, and the binding strength should be so that the optical fiber is not deformed, and it should be tied with a stainless steel cable tie every 50 cm.

Parallel line laying: the vibrating optical fiber is laid along the top of the fence, and when it reaches the end of the defense area, it is rounded and laid in a straight line in the opposite direction. It can be paved a few more times according to the needs of the forest, and the interval of optical fiber laying can be evenly distributed according to the height of the iron network.

Renderings of vibrating optical fibers on hanging nets.

Installation renderings of vibrating fiber optic knife net.

The use of hanging nets and buried walls is commonly used as hanging nets, and the effect is also the best. It is suitable for oil depots, chemical plants, natural gas and other places, and the renderings are as follows:

An alarm system that uses vibrations to determine intrusions. The detection element is a long special cable containing electronic components, which can be wound around the fence railing, and the vibration of the railing caused by someone climbing can trigger the detector, and the equipment connected to the detector will judge the position, so as to send an alarm to the safety duty personnel.

The vibrating optical fiber perimeter alarm system is a security alarm system built by using high-tech technologies such as laser, optical fiber sensing and optical communication, and is a new system based on distributed optical fiber sensing technology applied to perimeter monitoring and protection. In this regard, Lanxing vibrating optical fiber has done a good job.

A single optical fiber is used as a two-in-one device for sensing and transmission, and various disturbances transmitted to the optical fiber are continuously monitored in real time by directly touching the optical fiber or through carrying objects, such as soil covering, barbed wire, fences, pipes, etc.

Vibrating optical cable is an ordinary communication optical cable, but the first and last ends of the ordinary communication optical cable are added with optical devices, using the principle of Mach Zender interferometer, the ordinary communication optical cable is transformed into a special sensor, named Beijing Viteri vibrating optical cable.

As a sensor, the vibrating optical cable is generally used in the field to install the net and the buried installation, the net installation is to tie the Beijing Vitri vibrating optical cable to the perimeter fence or wrought iron, and the buried installation is generally better concealed, buried under the surface or wall.

What is the Vibrating Fiber Optic Perimeter Alarm System? Friends recommended Lanxing vibrating optical fiber, the principle is like this, part of the characteristics of the transmitted light in the vibration fiber perimeter alarm system will change, and the vibration optical cable alarm processing unit can detect the characteristics of light (i.e., attenuation, phase, wavelength, polarization, mode field distribution and propagation time) changes after signal acquisition and analysis.

Vibrating Fiber Perimeter is a new generation of security monitoring system. Compared with the current traditional security equipment, the common problems of short monitoring distance, high power consumption and high false alarm rate.

The uniqueness of Sanangoode vibration fiber is that the passive vibration fiber sensing technology used enables the system to provide long-distance corresponding actions without the need for any outdoor active components.

When there is an intrusion behavior, when the optical cable vibrates slightly by tapping, climbing, trampling, touching, shaking, squeezing, etc., the system will immediately alarm and locate the alarm position.

The vibrating optical cable alarm processing unit sends a coherent mode of laser to the sensing fiber, and the sensing fiber is installed on the barbed wire or other perimeter optical fiber fence, and when there are illegal intruders climbing, climbing over or interrupting the barbed wire, it will cause vibration, and this vibration will change the transmission mode of light. Some of the characteristics of the transmitted light in the vibrating optical fiber will change, and the alarm processing unit of the vibrating optical cable can detect the changes in the characteristics of the light (i.e., attenuation, phase, wavelength, polarization, mode field distribution and propagation time) after signal acquisition and analysis. Through the analysis of the characteristics of the changing waveform by the software, the real situation of the event can be distinguished, so as to achieve the effect of "intrusion pattern recognition", send out an alarm signal, and realize the optical fiber alarm function.

When the optical fiber sensor is affected by external interference, part of the characteristics of the transmitted light in the optical fiber will change, and the characteristics of the light (i.e., attenuation, phase, wavelength, polarization, mode field distribution and propagation time) can be detected through the configuration of special sensing equipment, through signal acquisition and analysis. The characteristic change of light is processed by the special algorithm and analysis of the alarm controller to distinguish the third-party intrusion behavior from the normal interference, and realize the alarm and positioning function. This system is mainly based on the principle of "fiber optic interferometer".

In order to detect weak vibration, the two-core single-mode optical fiber is used to form a balanced fiber interferometer, when the laser is emitted to it with a coherent laser, the interferometer composed of these two optical fibers outputs an interference optical signal, when the optical fiber is disturbed by the outside world, such as: mining, touching, knocking, etc., the output waveform of the interference light changes, and produces an interference image, this waveform change can be detected by the light detector, and the characteristics of the changing waveform can be distinguished by the software, so as to achieve the effect of "intrusion pattern recognition".