Campus Electronic Fence Project

This article is aimed at some problems in how schools and kindergartens choose to use electronic fences. It analyzes and discusses from the technical level and proposes that the selection of tension type electronic fences is a solution to the problem.

I. Preface At present, in order to strengthen the safety precautions for schools and kindergartens, it should be from civil defense (strengthen personnel training, increase staffing, improve the guards, patrols, on-duty, and other related systems), technical protection (adding security equipment, such as school entrances, Perimeter and other important parts should be equipped with technical protection facilities) to start two aspects. As a circumstantial anti-invasion device, the electronic fence has been widely used in many occasions due to its advantages of deterrence, tangibleness, and intelligence.

Second, schools, kindergartens to choose the electronic fence should consider the factors Schools, kindergartens should be how to choose the electronic fence, we have to consider the characteristics of schools, kindergartens and the characteristics of the electronic fence two aspects to find out their compatibility points for evaluation.

First, for the characteristics of schools and kindergartens, the selection of electronic fences to be used should be considered from the following aspects:

1. First, consider the personal safety of teachers and students in schools and kindergartens as a priority;

2. The factors of naughtiness of children and students should be fully considered. Even if the human body touches the fence by mistake, it cannot cause direct and indirect personal injury and other adverse consequences;

3. Considering the protection of the electromagnetic environment of schools and kindergartens, the selected electronic fence should not affect the surrounding electromagnetic environment during operation.

4, electronic fences should be able to display, alarm at the control center, and real-time records of intrusion, failure, damage, warning location and other information, as well as with the regional public security department networking capabilities;

5, the electronic fence should be easy to use, easy to learn, no special requirements for users.

Second, the characteristics and performance of electronic fences are compared. According to the front-end working mode, the electronic fence can be divided into three categories: high-voltage type, tension type, and induction type. The high-voltage electronic fence is divided into two types: high-voltage sine wave and high-voltage pulse electronic fence. The high-voltage pulse electronic fence is divided into two types: intelligent type and common type. The tension type electronic fence can be divided into: unilateral tension type, bilateral Tension type two; Inductive electronic fence is divided into: infrared, laser, vibration, static electricity and so on.

Comparison of the performance of some commonly used electronic fences:

Through the comparison of the performance of the above-mentioned several kinds of electronic fences, it is recommended to use tension type electronic fences for the purposes of school and kindergarten protection.

Third, the tension type electronic fence performance characteristics Tension type electronic fence Stainless Steel Wire rope is not charged during operation, and a good grounding is its significant characteristics. When the tension type electronic fence is in operation, stainless steel wire rope will not generate arc spark when it is not energized. The stainless steel wire rope will not emit electromagnetic waves when grounded and will not cause pollution to the surrounding environment. Therefore, from the perspective of the impact on the electromagnetic environment: Tension-style electronic fence is a green product that can promote the establishment and development of a harmonious, well-off society.

4. Why other electronic fences are not suitable for use by schools and kindergartens in addition to the recommended tension type electronic fences? Why other electronic fences are not suitable for use in schools and kindergartens:

High-voltage sine wave electronic fences are usually used in prisons, detention centers, military sites, and other key occasions. They are characterized by the fact that the fences are directly powered, and there is a danger of electric shock or death to the human body.

The characteristic of the high-voltage pulse electronic fence is that periodic pulses directly act on the fence, although many manufacturers have stated that the high-voltage pulse electronic fence does not directly harm the human body, but: 1. Indirect hazards exist (such as: additional installation on the wall In the case of high-voltage pulsed electronic fences, people may be injured by falling from high places once they are shocked.) 2. The high voltage of the high voltage pulse is between 5000-10000 volts and the low pressure is between 500-1000 volts. "There is no direct harm to the human body." The term "person" here refers to a normal adult. Does it include children, the elderly, and even patients? Because there is a standard assuming that the human body's equivalent resistance is 510Ω, but there is no human or child human body's equivalent resistance assumption, is there any harm to people with pacemakers? What about the result of electric shock in the rain season? These problems cannot be solved by the management department and the manufacturer after the occurrence of an accident. The “reasonable” explanations and handling opinions are provided. 3. Since “no direct harm to the human body”, why manufacturers are also pulsed electronic fences? The product went to an insurance company to buy 5 million accidental commercial insurance? It is understood that manufacturers of tension-type electronic fences do not need to purchase commercial insurance for life accidents.

In addition, the inductive electronic fence does not harm the human body when used. However, it cannot form a deterrent force and a high false alarm rate for intruders.

V. Conclusion Schools and kindergartens are protected by students, children, teachers, parents, employees, etc. The climbing and playful activities of students and young children often occur. The selection of electronic fences must be considered both to prevent invasion and to prevent Injuries caused by accidental electric shocks to students and young children. The tension type electronic fence should be the most suitable electronic fence for schools and kindergartens on the market.