Electronic fence common sense problem

What is the perimeter defense alarm system?
Perimeter security alarm system, also known as perimeter anti-theft alarm system, generally consists of four parts: detection part, signal transmission part, alarm linkage part and control part. After installing the perimeter protection alarm system in the fixed area that needs to be protected, when someone When attempting to cross the boundary around the protected area, the detecting device on the boundary detects the intrusion and sends an intrusion warning signal, and sends the intruding signal to the alarm linkage part through the transmission part to prompt the relevant personnel to process.
What are the classifications of perimeter security alarm systems?
The current mainstream perimeter alarm products include electronic fences, infrared radiation, vibration cables, electrostatic induction cables, traditional power grids and leaky cables.
What is an electronic fence?
The electronic fence is a new type of perimeter defense alarm system with three protection features: deterrence, blocking and alarm. According to different operating principles, electronic fence products on the market are mainly divided into pulse type electronic fences and tension type electronic fences.
Pulse shield intelligent pulse electronic fence system: After the host is powered on, the transmitting port sends a pulse voltage to the front fence. The time interval is about 1.5 seconds, and the pulse stays on the fence for about 0.1 second. After the loop is formed on the front fence, the pulse is returned. To the receiving port of the host, this port receives the feedback pulse signal; the host also detects the resistance between the two transmitters. If the front fence is broken and the circuit is broken or shorted, the receiving port of the pulse host can not receive the pulse signal or the resistance between the two transmitters is too small, the host will issue an alarm.
Fence alarm
Through the working principle of the electronic fence, no matter what voltage working state the pulse host is in, when the fence is damaged, the receiving port can not receive the pulse signal, the pulse host will alarm; similarly, when the two electronic cables are short-circuited When the resistance is very small, the pulse master will also report it.
What is the structure of the electronic fence system? What equipment and materials are generally included?
The electronic fence system is composed of a pulse master and a front-end fence. The pulse host is the core of the electronic fence system. It outputs pulse voltage and detects signals to the front fence. The front fence is made up of terminal rods, bearing rods, alloy wires, insulators, Warning signs, fences, etc.
Division of zones
The electronic fence pulse detector controls the long-distance perimeter, and it takes a long time for security personnel to find the location of the accident and cannot handle it in time. Therefore, how to divide the zone is necessary.
Fence design
According to different safety levels, configure the appropriate electronic fence to meet the requirements. The security level is usually divided into three levels: (1) Deterrence has a perimeter across the perimeter, such as a 4-wire system mounted on the top of the wall. Has a blocking alarm and deterrent effect. (2) Medium security level. The length of each zone is not more than 200 meters, and more than 200 meters should be divided into multiple zones. (3) High security level. The length of each zone is set at 100 meters and the entire fence is divided into multiple zones. Each zone has its own independent trigger alarm that indicates the zone in which the alarm is located. The alarm output is usually linked to other security systems such as CCTV, infrared radiation, spotlights, and alarms. In actual use, the length of each zone should be set according to length, terrain and economic needs.
Fence installation
The electronic fence is divided into three basic installation forms: free-standing, accessory and wall-top according to its installation position on site. (1) A freestanding electronic fence that is erected directly on the ground. Its height is about 2 meters, and generally 10-12 cables are installed. Considering the equipment and personal safety, it is required to install a protective wall or wall of not less than 1.2m on one side or both sides of the free-standing electronic fence. The clearance distance between them should be no less than 1m. The normal working area of ​​the freestanding electronic fence is placed in an enclosed area that is generally difficult for the public to access. (2) The attached electronic fence is attached to the fence, and the attached electronic fence is mainly used in places where there is a high level of safety and does not occupy the surrounding land. There are three requirements for the existing wall. First, the wall should have sufficient fastness to withstand the tension and pressure of the electronic fence. Second, the height of the wall should be no less than 2m. Third, the mesh of the wall must be less than 50mm to prevent human hand from reaching and touching the electronic fence attached to the inside of the wall. (3) Wall-top electronic fences are currently more popular in China and are erected above or at the top of existing fences. It can be installed vertically or at a certain angle. The height of the electronic fence is about 0.8m
Is the electronic fence safe for people and animals?
The pulse high voltage generated by the electronic fence is high voltage and low energy. It has electric shock effect on humans and animals, but it will not cause injury, and it will not be fatal. It only makes people and animals fear and stay away from the fence to form a psychological barrier to achieve safety isolation and prevention. the goal of.
Is the electronic fence expensive?
The cost of the electronic fence is not high, especially for the perimeter area with a large fence area, even 20% to 40% lower than the investment in installing the metal mesh fence, and the protection effect is better.
What is the quality of the electronic fence?
Generally speaking, the quality of electronic fence products is mainly reflected in the stability of product operation, anti-interference ability, false alarm rate and repair rate.
What is the service life of the electronic fence system?
The electronic fence system can be used for 15-20 years if used and maintained properly. The Shield Electronic Fence is guaranteed for three years and is trustworthy.
What is the application of electronic fences abroad?
The electronic fence is widely used in developed countries such as Europe and the United States, and its usage is very high. China is currently in its infancy.
What routine maintenance and inspection is required for the electronic fence?
Basically do not maintain and check when not alarming, just remove the tree grass close to the electronic fence of the electronic fence regularly (although the weeds will wither and will not alarm, but it will also consume some power).
Is the installation and operation of the electronic fence complicated?
The installation of the electronic fence system is very convenient. According to the terrain design, install the implementation plan and configure the equipment and equipment list of the front fence, and install the connection according to the instructions. The average person can master the operation process in just 2 hours.
The Shield Electronic Fence has a detailed product installation guide, I hope you are satisfied.
What are the advantages of the electronic fence?
The electronic fence has the functions of blocking, deterrence and alarm, low false alarm rate (not affected by weather, small animals, branches, etc.), simple installation, long service life and low comprehensive cost.
1, set blocking, deterrence, alarm function in one
2, change the passive defense to take the initiative to counterattack, can effectively defeat the intruder to make it abandon the invasion attempt
3. Strongly block the formation of physical barriers, delay the intrusion time, and strive for security.
4. The alarm is accurate and the false alarm rate is extremely low.
5. High adaptability. Basically independent of the environment and climate, deployment is not subject to terrain restrictions.
6. Easy installation and maintenance, and low cost.
What is the difference between pulsed electronic fences and traditional perimeter defenses and other electronic fences?
The pulse electronic fence uses a pulse mechanism, which is very different from the perimeter defenses such as infrared radiation, vibration cables, induction cables, and traditional high-voltage power grids:
1. The pulse high-voltage signal has a strong electric shock sensing effect on the intruder, and can realize the blocking and deterrent function. At the same time, the pulse signal is also an alarm detection signal, thereby realizing the integration of the blocking, deterrent and alarm functions.
2. It is completely different from the traditional high-voltage power grid and is safe and reliable for human body.
3. Strong anti-interference ability, will not be affected by the environment and climate, and the false alarm rate is extremely low.
4, not subject to terrain restrictions, can adapt to a variety of irregular environments, any deployment.
5, whether it is the host device or the front-end electronic fence, installation, use is very convenient, basically no maintenance.
Which locations are suitable for use with pulsed electronic fences?
Can be widely applied to: community, villas, schools, factories, zoos, orchards, substations, prison guards suo, military bases, government agencies, key cultural relic sites, borders, residential areas, industrial heavy land, warehouse heavy land, breeding plantations, etc. A location that requires perimeter isolation protection.
What environments can the pulsed electronic fence be installed in?
Existing perimeter fences, fences, or self-supporting installations. The system automatically adapts to changes in environmental conditions and site conditions. Depending on regional conditions, such as foggy days and windy days, the system can still maintain the z high alarm RMS. Easy to apply, no welding required, no threat of erosion.

Fume &dust extracted by air exhauster while plasma cutting. This system has one ventilation outtake and one gliding extraction intake, the extraction intake moves along with the gantry, the sealed rubber strip at the head of ventliation outtake, can makes a sealing function with the help of minus pressure generated by the fan.

pipe intersecting lines Cutting Machinery

Scope of application

The machine is a formed cutting equipment used for fully automatic incising intersecting lines with slope 

on pipes and cutting pipe end, for example, one-time molding cutting intersecting lines 

or opening holes on bearing steel pipes and gas and liquid transporting steel pipes by flame or plasma

with high precision and high efficiency. It can be widely used in oil drilling platform, shipbuilding industry, 

chemical industry, industrial boiler and power station boiler, pressure vessel, electrical power transmission

tower, water conservancy, water supply, bridges, crane, construction and other industries.

Features of pipe intersecting lines cutting machinery

1.Self-developed 5-7 axis CNC system; Ac-servo control

2.3D graphical display, simulation function, simulate processing

3.Parametric programming of graphic database or special intersecting line software

4.online test or demonstration for steel pipe, real-time dynamic tracking compensation

5.Compensation function of cutting gap, thickness, ellipse, groove angle. 

6.Nesting of pipe fittings, continuous cutting, long pipe separate into short slabs.

Model 

 

CPC series(Blocking plate), FWPC series(Friction wheel)

Cutting diameter 

 

50~1500 mm (customizable)

Cutting length

3000~12000m 

mmcustomizable)

Cutting manner

flame/plasma is optional

Rotation driving

Blocking plate

(Friction wheel is optional)

Cutting thickness

flame 6~50mm

plasma 3~30mm

Length localization precision

0.3mm/2000mm

Groove angle

flame±60°/plasma±45°

Angle localization precision 

Angular positioning precision

0.1~0.2°/360°

Cutting speed

50~6000mm/min

Auxiliary function

height detection,

pipe ellipticity modification

Rapid travel rate

≤12000mm/min

Controlling  Axis

X,Y,Z,A,B,W+ detection

Programming method

Parametric programming of graphic database /Special programming software supporting





CNC Plasma Cutting Machine

CNC Plasma Cutting Machine,CNC Plasma Cutter,CNC Plasma Cutting Machinery,CNC Plasma Router

SHIJIAZHUANG LONGXUAN TRADING CO., LTD , https://www.longxuanmachine.com