At present, the monitoring distance of the general surveillance camera is not large, especially at night, due to the light, the best monitoring distance is generally within 50 meters. Pen % fun % Pavilion www.biquge.info

Although the telephoto surveillance camera with a laser-assisted light source can monitor a distance of several kilometers, the problem of fixed cameras cannot be solved for this floating observation platform.

No matter what, the platform has a constant shaking, and this shaking is simply a disaster for the telephoto surveillance camera, the platform here shakes a millimeter, the picture obtained by the camera shakes a few meters or even dozens of meters, the picture is not clear at all, completely lost the meaning of monitoring, so Wei Minsheng completely gave up the plan to install monitoring equipment on the lookout.

After considering several devices, Wei Minsheng decided to buy some wireless cameras with memory cards to monitor the gates, four corners, main passages and entrances and exits of important places of the farm, and then store the image information in the storage center of the monitoring room at the same time through the wireless LAN, which is convenient for daily monitoring and viewing and playback of historical information.

Even if the wireless signal is lost due to bad weather, the data stored in the camera's own memory card can be retrieved.

But there is a serious problem with the use of this wireless network in this Li family farm, the houses in this farm are the kind of container modified mobile houses used, and the iron wall has a good shielding effect on wireless signals, and the wireless signal attenuates greatly, which seriously affects the transmission of video data.

Therefore, Wei Minsheng decided to build the wifi base station on the lookout platform first, use high-power omnidirectional antennas, and include the range of 300 meters with the lookout platform as the center into the coverage area of the wireless signal, and set up a local area network in the form of AP bridge.

In this way, for this lookout platform, there are almost no obstacles between every corner of Lijiazhuang and the lookout platform, so the connection of wireless signals is very stable, and the transmission speed is also guaranteed to the maximum.

And after the establishment of the wireless LAN, there is a better platform in the farm, many mobile devices can be used in the farm, even without the support of the Internet, mobile phones, tablets and other devices can be used for small-scale information sharing and instant communication.

In the future, the computers used for teaching in the school can use the wired network to obtain faster speed and stability, and realize the integration of wired and wireless networks through switches, routing equipment and wireless network connections, so as to achieve the purpose of seamless communication and information resource sharing.

After having this LAN, you can also use LAN instant messaging tools such as QQ LAN version to carry out point-to-point, point-to-many information interaction, and the world without mobile phone signal can enjoy the convenience brought by high technology.

Although there is still a slight delay in using the Internet instant messenger for voice calls and using telephones and walkie-talkies, because it can also transmit text, images, videos and other materials from richer sources, compared with the convenience obtained in other information exchange processes, this two-second delay is completely negligible.

Since these devices can only be provided by Wei Minsheng's Huaxia Villa, the use of these things will be greatly reduced without the network, at least it is a difficult problem to charge outside Huaxia Villa, so Wei Minsheng is not worried that these things will spread outside.

But the most troublesome thing to install a wifi base station on the observation platform in the sky may be the power supply.

If you pull the wire directly from the farm, the nearly 100 meters of wires when the balloon is lifted and lowered are not easy to pack, and if you don't set up another stressed cable, hundreds of meters of wires may break the thin copper core wire inside by their own weight.

In addition, the addition of a cable will increase the load capacity of the hot helium balloon, and the skin will easily break if it is often dragged and bent without a fixed wire, which is very dangerous in this farm full of tin houses.

With solar and manpower generators, the equipment is too heavy and the power supply is not stable, so it is not a long-term solution.

The more stable energy source in the high altitude should be the wind, in this place near the Yangtze River, nearly 100 meters high where the wind is generally three to six levels, if it only supports the power supply of the wifi base station, there should be no problem at all, and it doesn't even use much wind turbine.

It's just that on this high-altitude floating platform, it is also a troublesome thing to fix the fan, the space on the hanging basket is not large, and there are ropes on all sides, and it may be dangerous if the blades are entangled or the rope is cut.

Although it is also possible to hang the fan under the helium balloon on the top of the hot helium balloon, Wei Minsheng always feels that the wind blades that swing with the wind and rotate at high speed are not very safe, in case the wind swings around and cuts the helium balloon, it will definitely be a disaster for the hot helium balloon, and it may also cause casualties in serious cases.