Is there a high rate of false alarms in electronic fences? What are the defects of electronic fences

If it is not high, some special circumstances will produce false alarms, such as strong wind and rain, tree branches are blown down and pressed down to make the two wires together, or the alloy wire is aged, forming a relatively large pressure difference.

There is also being bitten by small animals, this situation is extremely rare, few animals climb the pole, and the bird will not be a false alarm if it lands on it.

The electronic fence is currently the most advanced perimeter anti-theft alarm system, with excellent protection ability and excellent durability;

The false alarm rate of electronic fence is very low, almost 0: it can effectively prevent false alarms caused by small animals, tree branches, bad weather, etc.;

The electronic fence is a wired connection and an insulated wiring, so from the perspective of alarm, the probability of false alarm is very low.

In the absence of external factors, the electronic fence will not call the alarm casually, unless n years later, the alloy wire is aging, and the various parts form a huge voltage difference, which will alarm the police, but at that time, it can be better to defend the alloy wire of the electronic fence.

However, the maintenance cost of this kind of radiation is much smaller than that of infrared radiation.

Not high, very low, for example, the downpour, the rain will be connected between the 2 lines of the electronic fence to be able to alarm, and when it rains, the branches are wet, falling on the electronic fence, from top to bottom, the 2 lines are connected to the police, in other cases, it is generally not a false alarm.

1.The touch does not alarm, and there is no response to the touch for a short time.

2.If you wear gloves and cross the electronic fence, the electronic fence loses its protective effect if the alloy wire (alloy rope) is not broken. (As long as it is in the case of the human body is well insulated, it is easy to cross).

Of course, the general electronic fence is installed on the wall, the above two situations can be excluded, in the case of the whole body insulation, the load-bearing capacity of the alloy wire is not enough to support a person to climb over the fence, and the disconnection alarm will be triggered at that time.

At present, the market says that the advantages of electronic fences: deterrence, blocking and alarm.

1.Put on gloves and go through the electronic fence so that the deterrent effect disappears2There are so many flaws upstairs that it is impossible to block it.

3.If the wire is shorted, the disconnection alarm and short circuit alarm are useless...

The electronic fence really loses its effect.

However, I have used sensor-based electronic fences, and sensor-based fences do not have these defects. When people are approaching, there is an early warning function, touch must be alarmed, broken wire and short circuit must be alarmed, there is only one company on the market at present.

The main disadvantage is the radioactivity of the human body.

The electronic fence is the most advanced perimeter anti-theft alarm system, which is mainly composed of three parts: the electronic fence host, the front-end accessories and the back-end control system. Usually, the electronic fence host is installed outdoors along the original fence (such as brick wall, cement wall or iron fence), and the pulse electronic fence host is usually outdoors, and the alarm signal is transmitted to the control keyboard of the back-end control center through the signal transmission equipment, showing the working status of the defense zone, and remotely arming and disarming the external pulse host.

Electronic fence defects:

1. High-voltage pulse fence: high-voltage unsafe (explosive, forbidden by schools), false alarm (leakage) in rainy and snowy days, and multiple outdoor areas are required.

The main engine is segmented to form a long fence monitoring, and the electronic equipment is easy to break (afraid of cold, heat, rain and snow rot).

Erosion will rot, afraid of lightning strikes), outdoor power cords and network cables are required. High maintenance costs.

2. Tension fence: multiple outdoor hosts are required to form a long fence monitoring in segments, and electronic equipment is easy to break (afraid of cold, afraid.

Heat, rain and snow corrosion will rot, afraid of lightning strikes), outdoor power cords and network cables are required. High maintenance costs.

3. Vibrating fence: special cables are required, which are afraid of cold, heat, easy to false alarms, corrosion and mildew, lightning and lightning, and require multiple outdoor hosts for long-distance segmented networking, and outdoor power cords and network cables. High maintenance costs.

4. Leakage fence: special cables are required, which are afraid of cold, heat, easy to false alarms, corrosion and mildew, lightning and lightning, and require multiple outdoor hosts for segmented networking over long distances, and outdoor power cords and network cables are required. High maintenance costs.

Perimeter security electronic fence system composition: mainly composed of front-end fence and electronic fence host, communication, control host.

Anti-shear alarm. <>

The anti-shear alarm is the resistance detection of the same circuit, and the anti-shear will be reported when the signal changes when the same circuit is crossed.

Short circuit alarm. <>

The short circuit alarm is the short circuit of two alloy wires of different circuits.

Disconnection alarm. <>

The disconnection alarm is the disconnection of any circuit on the alloy line.

If a false positive occurs, how do we need to determine the problem point, generally from these two aspects: the host and the front-end line network.

How Do I Quickly Resolve False Alarms for Alert Types? First of all, check the front fence, whether there are foreign objects on the alloy wire and whether the alloy wire is broken, if so, deal with it directly. If there is no obvious phenomenon on the external network, check whether the host is normal and short-connect the host internally.

Illustration of the short-circuit of the electronic fence host.

If the host is normal after shorting, it is judged that the fault is on the front-end fence, find the fault prevention area, remove a group of short wires in the fault prevention area, and then connect to the front-end fence, then which circuit is faulty. (A circuit in the host of the short circuit, a circuit connected to the front end fence), if the front part is still alarm, it is a problem of the front end, on the contrary, if the short circuit is still alarm, it is a host failure, at this time you need to contact the electronic fence manufacturer after-sales solution.

Any product has its advantages and disadvantages, electronic fence should still have more advantages than disadvantages, there are three major functions of deterrence, early prevention and alarm.

There is no flawless product in the world, and any product has its advantages and disadvantages, but in terms of the current market situation, electronic fence products are still a good safety precaution.

Shanghai Shifa Electronic Technology Co., Ltd. provides a franchise provider of electronic fences.

From the point of view of the characteristics of the security system, the perimeter of the community is mainly composed of the perimeter wall of the community, the shops along the street and the community house, and some buildings are adjacent to the shops. Therefore, it is necessary to achieve comprehensive protection of perimeter, intrusion alarm, and safety and security. Physical Barriers:

According to different installation methods, the front-end fence forms an insurmountable barrier of different heights at the perimeter of the community, and the spacing between the front-end alloy wires is between 120 200mm, which increases the difficulty of intruders climbing or running through the wires. In addition, fences and warning signs have a deterrent effect on intruders and can effectively reduce their motivation to commit crimes. Electric Shock Defense:

When the intruder climbs or destroys the front fence, the system can generate a 5kV 10kV pulse voltage, and use the electric shock stinging sensation to deter or force the intrusion to be terminated, but the current is very small, and it will not cause serious accidental injury to people. Detection alarm: monitoring the front-end fence in the short circuit, open circuit or attempt to destroy and other abnormal conditions when the output alarm signal, in order to ensure the daily normal work at the same time the false alarm rate is very low, can prevent the community security personnel in the irritability to close the perimeter alarm system, effectively protect the safety of residents in the community.

Hierarchical management: the system can divide the authority according to the actual situation, and realize hierarchical management and adjustment, such as arming and disarming the electronic fence, and converting high and low voltage; Set the camera preset to sell old, switch lenses, etc. The security management platform software in the management center pops up an alarmreport the prompt window, and send the alarm SMS to the mobile phone of the specified person through the SMS module.

The officer on duty was alertedRespond immediately after the report and arrange personnel to go to the scene to deal with it. The security management platform software has functions such as alarm record query and on-site image review, which provides a scientific basis for dealing with intrusion events in the future. In addition, the monitoring software can also realize cross-regional remote control and hierarchical management, so that each controlled site of multiple systems and the higher-level management department form a closely connected system, which is convenient for unified command and management.

The active protection of the electronic fence is strong: when the criminals invade, they will be effectively hit by the electronic attack to stop their illegal behavior; The electronic fence can be guarded against tight and no dead ends: the installation of the front fence is not affected by the length, size and terrain of the perimeter.

At the same time, it can also be installed on the ground, with comprehensive protection and elimination of blind spots; The false alarm rate of the electronic fence is low and can work around the clock: the intelligent alarm delay function can greatly reduce the false alarm. Small animals, tree branches and bad weather can still work normally, the false alarm rate is low, and the number of unnecessary patrol officers is greatly reduced; The electronic fence can be networked with security and IT systems

Through the RS485 line, it can easily realize the linkage with other security products, and can also be networked quickly, thickly, and quickly, which greatly improves the security and intelligence of the security system; The fence can be operated remotely: the host can be controlled via keyboard, software and LAN, which is convenient and fast.

The role of the burglar alarm plays the role of anti-theft alarm, home appliance control, voice intercom and so on, when the alarm product is set to the arming state, if there is an illegal person intrusion, when the infrared detector detects the temperature of the pure body of the human field, the detector immediately sends a signal to the alarm host, and then the alarm host dials ** or sends a message to the owner, which plays the role of anti-theft alarm hunger spine. You can also use your mobile phone to control home appliances when you go out, making your home safe and warm. The above functions are not described one by one.

Do burglar alarms work? Of course, it not only has the above functions, but also has emergency alarm, gas leakage detection and other functions, which play a vital role in the safety of every home.