Wireless Bridge Have you chosen the right one?

As an important wireless monitoring transmission equipment, the wireless bridge is related to the performance and correct use of the entire wireless monitoring system. Things that seem to be very simple, in fact, are not as simple as you think, not only to choose the right wireless bridge, but also to use it correctly, in order to really play its role. Before choosing and using the wireless bridge, please take a look at the professional wireless bridge equipment and solutions that I have compiled for you. Maybe it will help you!

1, the impact of bad weather on wireless bridges

The wireless bridge is used outdoors, and it has a certain influence on the signal transmission of the wireless bridge in bad weather, such as wind and rain. Therefore, the selected bridge equipment must have good waterproof, dustproof, lightning protection, anti-UV and other functions, in order to adapt to the complex outdoor environment. Also used outdoors, be sure to install and fix it to prevent it from being blown down by the wind.

2, the alignment of the wireless bridge direction

The wireless bridge needs signal alignment to achieve transmission. If the wireless bridge is not aligned, it is difficult to search for the signal, and the debugging will not succeed. The farther the distance is, the more so. Therefore, the wireless bridges at both ends of the transmission must be aligned before debugging the wireless bridge. Within a few hundred meters, the distance that can be seen with the naked eye can be directly aligned with the human hand. However, if the distance is not visible to the naked eye, the positioning system can be used to query the latitude and longitude of the equipment at both ends, and then adjust the latitude and longitude angle between the two ends. This is the most common and practical method at present.

3, the difference between the directional antenna and the omnidirectional antenna of the wireless bridge

The coverage of the directional antenna can only be effective in front of the antenna. For example, a directional antenna with only 60 degrees, its coverage is 60 degrees ahead, and the coverage of the omnidirectional antenna is 360 degrees. Directional antennas have strong directivity, so they are mostly used for long-distance wireless transmission, while omnidirectional antennas are not very directional, so they are mostly used for close-range wireless coverage.

4, wireless bridge transmission mode

Common wireless bridge transmission modes are:

Point-to-point transmission: that is, a receiving end to a transmitting end, the transmission distance can be very far, up to several tens of kilometers.

Point-to-multipoint transmission: that is, a receiving end to multiple transmitting ends, the transmission distance is generally very close, within a few kilometers.

Relay relay transmission: that is, between the receiving end and the transmitting end, adding a relaying and relaying device, which is often used when there is a barrier between the receiving end and the transmitting end, or the distance is too far.

Emission and refraction transmission, and the transmission or refraction of microwave signals through walls and mountains require smooth surface of the wall and the mountain. This transmission method is not stable and is less used.

5, single mode, dual mode in the wireless bridge

Single mode and multimode refer to the number of design modules in the bridge. The device adopts 2.4GHz and 5.8GHz dual-band multi-module design, and the single wireless RF module achieves 320Mbps transmission rate and bandwidth up to 160Mbps; multiple wireless RF modules are added. Up to 640Mbps transmission rate, bandwidth up to 320Mbps, easily solve the problem of insufficient application of long-distance transmission bandwidth, and solve the problem of insufficient bandwidth of multiple jumps.

6, the reason for the price difference of wireless bridges

The price of wireless bridges is relatively large. After all, the prices of different brands and different devices are different. You can buy a set of hundreds of pieces on Taobao, of course, there are thousands of sets and tens of thousands of sets. Moreover, the prices of equipment that meet the different transmission requirements of the same brand are also very different.

So, what factors are causing such a big difference in these prices? Common factors affecting prices are branding, workmanship, raw materials and services. If you want to get the project done, you can't just see the price you see. To choose a cost-effective manufacturer.

7, the advantages and disadvantages of wireless bridges

Advantages: It can replace the equipment that needs wiring and cable, such as network cable and optical fiber, to carry out long-distance wireless transmission, help the construction personnel to save manpower and material cost and time cost. In addition, in some cases where wiring is difficult or even impossible to use, use wireless bridge. This kind of problem can be solved without being plagued by the difficulty of wiring construction.

Disadvantages: The cost of close range is high, and it can't move anywhere when working. It must be unobstructed during transmission and has more restrictions. If you want to carry out mobile video transmission, you need to switch to a mobile video transmission device. If the transmission distance is too far more than 50 kilometers, you need to add a relay device or directly use a 3G/4G device.

8. Method for transmitting wireless bridges with obstructions

The wireless bridge is wirelessly transmitted by microwave. The transmission path of the microwave is transmitted along a straight line, so there is no obstruction in the middle. If there is a little obstruction, the problem is not big, but it will have a certain impact. If there is a large area of ​​obstruction, the following three methods must be used:

To avoid obstructions, the common method is to have a pole, or the transmitting/receiving end of a mobile wireless bridge, until there is no obstruction between the two ends of the transmission.

The relay device is used to set a transit point with no obstruction between the transmitting end and the receiving end, and then two devices are added for receiving the signal from the transmitting end and transmitting to the receiving end.

Remove the obstruction. If it is some trees, remove the branches that block the signal transmission. If it is a large building or a mountain and other obstacles that cannot be removed, you can only perform the first or second method.

9. Installing a wireless bridge in the field to take power

At present, many wireless bridges support POE power supply. For example, Tianbo's wireless bridge can be powered by POE, and it is equipped with a standard 24V POE adapter to easily solve the problem of difficulty in taking electricity in the field.

10, the impact of wind, rain, snow and other weather on the wireless bridge

If it rains, it will cause a certain attenuation of the microwave signal of the wireless bridge, but it will not affect the normal operation of the wireless bridge. If it is snowing, it will be fine if it is not under the blizzard. If it is under the snow, there will be no wireless bridge. How big is the impact. After all, the wireless bridge has excellent waterproof, dustproof, heat-resistant and cold-resistant functions. As long as it is fixed and secure, it will be no problem if the direction of the device is not deflected by the snowstorm.

11. AP mode, WDS mode and Client mode of the wireless bridge

The AP mode refers to the wireless access point mode of the wireless bridge, and the mobile device is connected to the wireless network by transmitting a WIFI signal. The WDS mode is a wireless distributed system mode that can be used to bridge two networks through a repeater of a wireless network. Client mode is the client mode, which enables the device to act as a wireless network card and access wireless signals.