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Wireless bridge signal transmission and reception angle setting method
The wireless transmission part of the wireless monitoring system transmits the signals from the front end of the wireless bridge to the back end and completes the signal connection between the two ends. This is unfamiliar to the contractor who has just contacted the wireless monitoring project. Feng Runda today shares with you the issue of wireless bridge launch and reception angles.
In general, the transmission distance is relatively short. For example, in the range of several kilometers, the built-in antenna wireless bridge is widely used (Fengrunda wireless bridges are built-in antennas). The angle of transmission and reception of such devices is generally relatively large, and the angle can be divided into 30°, 60°, 90°, and 180°, and the greater the angle, the closer the transmitted distance.
If the monitoring points are relatively close to each other, a direct view may be used at the receiving end. As long as two or more monitoring points can be seen at the front end of the wireless device, the back end can use multiple sending and receiving.
Figure: Transmission distance, angle
As the transmission distance is stretched and extended and the distance exceeds ten kilometers or more, the angle of transmission and reception of the bridge equipment in the wireless monitoring system will decrease from ten degrees to several degrees with the distance. An external antenna can be used at this time. The external antenna gain is 24dbi, 29dbi, 32dbi, 34dbi, etc. The wireless bridge connects the data signals such as a bowl by plugging in different gain antennas. The more concentrated the signal convergence is, the longer the transmission distance is.
The use of wireless bridges in large-scale monitoring projects involves distances ranging from tens of kilometers to more than 100 kilometers. Point-to-point transmission is generally used to ensure the transmission of signal quality while ensuring sufficient bandwidth.
Figure: Distance is long and angle is small
The wireless bridge can be applied flexibly and frequently in surveillance security projects. It can clearly define the front-end point distribution according to the environment, the front-end monitoring point distribution, and the transmission distance of the entire wireless circuit.