Today, the development of the anti-theft alarm industry has gone through a long period of time, and its technology is relatively mature. Therefore, technological innovation has a certain degree of difficulty. This article will introduce a new kind of solar full wireless radio technology, which has advantages and disadvantages in the application of perimeter prevention. The technology also has room for improvement. So how is the specific application, readers may wish to read through the following to experience.

Perimeter is the first line of defense against foreign invasions, and the importance of perimeter defense can be imagined. Currently used in perimeter security detectors intrusion detection products, according to the principle of application is divided into two major categories: active infrared radiation and electronic fence. Among them, electronic fences have not been widely adopted due to factors such as high cost and poor installation effects. Active infrared shots account for most of the market share of anti-theft projects. Although compared with the electronic fence, infrared radiation installation is relatively simple, but the construction of trenching, pipe laying, wiring is still very large, taking into account the anti-theft project profits are not high but the maintenance costs and other factors, a simple perimeter security engineering into Many security engineering companies "hot potato."

In the past few years, the anti-theft products that consist of an on-chip address module and a bus-based system have emerged one after another, as well as on-camera products for wireless signal transmission. However, it only reduces the amount of engineering work, but it still requires trenching, pipe laying, and wiring during installation, and it does not completely solve the problems of construction and maintenance.

The main principle In order to meet the needs of market development, now domestic and foreign manufacturers have developed a corresponding new technology of anti-theft detection - solar energy wireless infrared detectors. The use of this technology can largely solve the troubles of installation and maintenance of perimeter detection equipment. Its basic design ideas mainly have the following two points: First, the detector has a built-in rechargeable lithium battery, and the power supply part is powered by a solar panel, so that solar energy can be recycled without using a power cable. In general, the solar panel is amorphous silicon, which can generate electricity without direct sunlight, and the installation environment is greatly expanded. In addition, the solar panel's power supply capacity is much greater than the power consumption of the shot, ensuring that no light and continuous rainy days can work as usual. Secondly, the built-in wireless transmitter module is used to transmit the alarm signal wirelessly. Under the premise of complying with the relevant national laws and regulations, a high-power transmit module is used as much as possible to ensure the effective wireless transmission distance between the radiodetector and the host.

The solar energy wirelessly uses the solar energy to transmit electricity, and the signal is transmitted wirelessly. It is not necessary to install the power line and the signal line. It truly does all the wireless work and largely solves the problems of construction and maintenance. Its working principle and the traditional wired to radio Basically the same, but the power must be reduced, otherwise the solar panel area is too large for production use.

There are two brands of solar-powered full-radio products on the market today, namely Japan's "Dakekes" and domestic "Hangbo". However, they are slightly different in design, and "Darkek" is split. Form, composed of radio detectors, wireless transmitter modules, solar panels, and batteries. The "Hang Bo" uses an integrated form, that is, on the radio, solar panels, wireless transmission modules and rechargeable batteries are in a shell. In contrast, the one-piece design is more beautiful, the size is more compact, it is easier to install and maintain, and the split type is more flexible on the shot matching.

Application Advantage In the competition of anti-theft products in the future, solar energy will be greatly improved. The advantages, disadvantages and prospects will be briefly described below.

1. Reducing the amount of installation work Due to the adoption of all-wireless working methods, it is no longer necessary to dig trenches, lay pipes, and wiring, and the construction is more convenient, especially in the case of complex wiring environments or under well-prepared road conditions. More obvious. For example, if 50 pairs of radios are to be installed in a project, for example, if a traditional wired radio is installed, a large number of cables should be connected (each pair of radios shoots 1 power line and 1 signal line.) Cables, 50 pairs of shots require 200 cables. The first step is to dig the hooks, lay pipes and wiring, and then install the shots. The whole project requires more labor and a longer duration. If you install a solar-powered wireless radio, two people can complete the installation within a day or two, saving time and resources.

2, easy to maintain solar energy all wireless radio in the host's display each pair has a unique address code, a pair of radio fault or alarm will have a corresponding prompt on the host, such as 008 on the radio battery low voltage, The “008 Low Voltage” will be displayed on the host display, so it is more convenient for fault shooting. The traditional wired-to-radio system not only needs to check whether there is an abnormality in the radio line itself, but also troubleshoots the problems in the cable line, which makes maintenance more complicated.

3, to prevent the entire system from lightning strikes because of the shooting in the outdoor, so the possibility of lightning strikes in the summer is more likely. All solar energy wirelessly connects to the radio without wires. Even if a single product is struck by lightning, it is only a single damage and will not affect the entire system.

4. The energy-saving and environmental protection security project adopts solar energy to fully save the use of cables, while eliminating the need for power consumption. It is a truly green product.

Existing defects and solutions 1. Co-frequency interference Due to the restrictions of national laws and regulations, the wireless band resources that can be used for civilian use are limited. Many wireless products are concentrated in limited frequency bands. If triggered at the same time, it will inevitably result in certain interference. The solution is to use multi-band transmission of wireless signal technology, which means that sending several signals at the same time or detecting interference signals will automatically jump to the undisturbed band to send signals, which can avoid the interference of signals in the same band. problem.

2. Requirements for the Environment First, it cannot be used under low-light conditions. Because the illumination cannot reach the minimum light level of the solar panel for a long time, the power supply cannot be performed normally. Second, it cannot be used in severely shielded environments because wireless signals cannot be transmitted smoothly.

The above two points are the flaws of solar energy all-wireless fire. It is difficult to fundamentally solve them, but users must realize that the existence of these special environments is extremely individual. After all, the impact on the wireless anti-theft market is only an example, and people There are some technical means to minimize the impact. First, you can use high-quality solar panels, even under low light can also be normal power supply, such as for the entire solar wireless radio, you can use special materials to ensure that the amorphous silicon solar panels installed on the fire in 1600LX (common Rainy weather can output current under the illumination of 2000LX), so that it can be used as usual under the condition that the illumination is not enough. In addition, a wired interface is reserved on the intelligent anti-theft alarm host design so that it can accept both wireless and wired reception, and in a particularly dark or heavily shielded place, it can be equipped with wired on-air compensation to make up for it. The project is convenient and assured.

Development prospects The development direction of solar energy all-in-one radio is from the market side: One is the civilian market, suitable for installation in homes, office buildings and other windows to achieve the purpose of preventing thieves from being outdoors, and is a substitute for metal security windows. The other is the engineering market, which is suitable for installation in the perimeter of schools, communities, factories, prisons, institutions, etc.

Technically speaking, we are taking the road of intelligence. The current wireless radio is usually AM or FM. In the future, the development direction of wireless radio is frequency hopping technology. This technology can distinguish signal interference between radios and has low false alarm rate. As far as the entire wireless anti-theft system is concerned, it is necessary to embark on the road to intelligence, not only with the lights, but also with the video, network and other linkage.

From the point of view of the production process, it is necessary to design beautiful and compact, which not only meets the aesthetic needs of people, but also facilitates the installation and achieves the concealment effect. And according to different market demands, a multi-beam product is designed.

With the rise of real estate and the awakening of public awareness of prevention, solar wireless has a wide range of prospects for shooting in the perimeter security market. Although, solar energy all-wireless radio is a brand-new anti-theft product, some people have doubts about the stability, false alarms, and service life of their transmission. However, these are not technical problems, and mature wireless signals and infrared Radio technology has long been widely used in various fields. Solar energy has many unparalleled advantages over wireless radio. As long as the product itself is doing well, its development and maturity will not be a problem.

In summary, the solar energy all-in-one wireless radio product is a new generation of perimeter intrusion detectors. Whether it is the advancement of technology or the convenience of engineering, or the application prospect of engineering and civil markets, it will definitely affect the existing market structure of anti-theft devices. , I believe in the security industry will show a broad development prospects. (Author: Bo is now working in Ningbo Heng Communications Equipment Co., Ltd.)