Although the use of PoE switches to power web cameras is strongly advocated, there are still many engineering and engineering leaders who are unwilling to do so. The reason is that, apart from costs, the main concern is that power supply is unstable. Is PoE switch power supply really unstable?
Actually, in actual construction and application, there is indeed a situation where the PoE switch cannot supply power or the power supply is unstable. However, this does not mean that the PoE switch itself is not good, but it does not select a good PoE switch with good quality or no Use the switch correctly. You think about it, a very beautiful dress, when you wear it on your body and find it is not good-looking, can you say that this dress is not good? The basic reason is that this suit is not for you, or that you are not suitable for this suit. In the same way, in practice, it is important to choose PoE switches.
Distance is not arranged : PoE switch power transmission distance of up to 100 meters, but in actual use, in order to ensure more video effects, generally choose a distance of less than 80 meters is better. If the used distance reaches 90 meters, 100 meters or more, the transmission effect is not so good, and even packet loss may occur. This leads to the instability of the PoE switch that everyone thinks.
PoE switch quality problems : Some of the friends encountered actual instability in using PoE switches. They may be the quality of PoE switches purchased. Nowadays, there are many kinds of PoE switches. Some people choose cheaper PoE switches, which will definitely lead to video transmission problems, and instability will be inevitable. When choosing a PoE switch, try to choose a brand with a certain reputation and professionalism.
The quality of the network cable is not relevant : Everyone knows that PoE switch power supply needs Category 5 cable or Super Category 5 cable to transmit. Some people buy a quality but off-net cable, which directly leads to instability of the monitoring system.
Did not choose the appropriate PoE switch : Like Feng Runda PoE switch from 4 to 24, there are 100M, Gigabit, and some Gigabit with Gigabit expansion port, how to choose, or select the bandwidth of the switch ? It requires a certain amount of expertise. If you do not choose the right PoE switch, instability is normal.
Therefore, the reason why network monitoring uses PoE switches is not caused by the switch itself, and it is caused by other reasons. If you choose the right one, it is recommended to use PoE switches.
Shenzhen Kaiyuan Era Intelligent Equipment Co., Ltd. is a high-tech enterprise specializing in network communications and adhering to independent research, development, production, sales and service. Products cover: PoE switches , network switches , PoE power supplies , PoE separators , PoE modules, etc. Security monitoring installation / intelligent system integration weak engineering / network engineering / wireless network coverage products. The company is committed to providing diversified and personalized OEM/ODM services to global network brand owners, operators, and integrators. Carefully controlling every aspect of R&D, design, procurement, production, and testing, it also enables the company to lead the industry in terms of innovation capabilities, R&D technology, and ability to control product quality. At present, the sales network covers the whole country and is exported to many countries and regions in Southeast Asia, the Middle East, North America, Europe, etc. It has general agents in Singapore, South Korea, the United States, Australia and many other countries. It has a complete and scientific quality management system. Shenzhen Kaiyuan Times Intelligent Equipment Co., Ltd. has been recognized by the industry for its integrity, strength and product quality. Welcome friends from all walks of life to visit, guide and negotiate business.
Hexagonal Gabions
The hexagonal gabion cage technology has four advantages:
√ The construction is simple. The ecological gabion cage technology only needs to put stones in the cage and seal it. It does not require special technology, nor does it require water and electricity.
√ The cost is low, and the cost of hexagonal gabion cages is only 15 yuan per square meter.
√ The landscape and protection effect are good. The combination of engineering measures and plant measures adopted by the ecological gabion cage technology can effectively prevent soil erosion, the landscape will take effect quickly, and the landscape effect will be more natural and richer.
√ It has a long service life. The eco-gabion cage technology has a service life of several decades and generally does not require maintenance. It is precisely because of this that the Yangtze River Huangshi Section Revetment Project, Taihu Lake Flood Prevention Dike Protection Project, Three Gorges Sandouping Revetment Project, etc. have all adopted this technology.
Gabion specifications: 2m x 1m x 1m, 3m x 1m x 1m, 4m x 1m x 1m, 2m x 1m x 0.5m, 4m x 1m x 0.5m, and can also be produced according to customer requirements.
• Aperture: 60*80mm, 80*100mm, 80*120mm, 100*120mm, 120*150mm, 90*110mm
• Wire diameter: There are three wire diameters for Gabions - mesh wire, edge wire, and tie wire
√ The range of mesh is 2mm-4mm
√ The edge wire is generally larger than the mesh wire, 0.5-1.0mm thicker than the mesh wire
√ Tie wire is generally smaller than mesh wire, the most common is 2.2mm
• Wire tension: not less than 38kg/m2 380N/mm
• Surface treatment
√ Electro-galvanized. The zinc content is 10g/m2. Poor corrosion resistance
√ Hot-dip galvanizing. The amount of zinc can reach 300g/m2. Strong corrosion resistance
√ Galfan (zinc aluminum alloy). This is divided into two materials, zinc-5% aluminum-mixed rare earth alloy steel wire, and zinc-10% aluminum mixed rare earth alloy steel wire. Super corrosion resistance
√ PVC coated. The thickness of the plastic wrap is generally 1.0mm thick, for example: 3.7mm after wrapping 2.7mm. Strong corrosion resistance
√ Polyester Gabions
Polyester gabion net is a newly developed non-polluting, corrosion-resistant, anti-ultraviolet, and new environmentally friendly material. It is a hexagonal net woven by twisting polyester threads.
Polyester thread is a product that has better performance than iron wire and steel wire.
It is not easy to break,
high strength,
Good toughness,
High temperature resistance,
Acid and alkali resistance,
Anti-UV radiation,
Weathering resistant,
Smooth surface,
Long service life.
Therefore, the life of the polyester gabion net can reach more than 60 years.