If you are doing wireless monitoring system, you must use a wireless bridge, and there are many ways to use the wireless bridge. Which method do you specifically choose, you know? Today, Fengrunda, a professional transmission product & service provider, enumerates three common networking methods for wireless bridges, and explains the use environment separately for future reference.
1, point to point application
Peer-to-peer is a launch point corresponding to a receiving point, which is a one-to-one use of a wireless bridge, which is also the simplest way of networking. The two-point antenna must be oriented relatively to achieve the best results.
This method is suitable when there are no obstacles, there are few obstacles or the visual distance is relatively close. In the transmission process of this method, the loss is minimal, and the monitoring data transmission effect is the best. If it is an analog camera, this method can only be used.
2, relay mode
This is an indirect transmission method that requires a wireless bridge to act as a "repeater", typically used for wireless transmission between two buildings that are not directly visible, or that has obstructions (indirectly bypassing obstructions) transmission.
As shown in the figure below, the signal needs to be transmitted from point A to point B, but there is a building (C) blocking between them, and you do not want to change the other route. You can then install a wireless bridge in this building. A The signal at the point is first transmitted to C and then transmitted to B, which is equivalent to one more step in the middle.
Since there are certain losses in the signal and transmission in this mode, use the relay mode as little as possible, or use the case where the transmission bandwidth is not high and the distance is short.
3, point-to-multipoint applications
This networking mode is used in wireless monitoring and must be a network camera. Multiple transmitters correspond to one receiver. For example, there are multiple wireless bridges at the front end to transmit monitoring data from multiple surveillance cameras, and then converged to the receiver's wireless bridge for unified transmission to the monitoring center.
This method is suitable for network monitoring. It should be noted that the angle between the two transmitters should not be too large. Usually, the angle between the two transmitters should be kept at about 20 degrees. The transmission distance between the transmitter at the front end and the receiver should not be too far. It is better to ensure that the transmission link is the same. Only one line can guarantee the stability of the transmission picture quality; the pixels of the camera used should not be too large.
When using the point-to-multipoint mode, pay attention to several points: the transmission distance, transmission bandwidth, and the transmission channel are unimpeded. Of course, you also need to flexibly select the bridge equipment according to the site conditions.
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|
Model
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Nominal Diameter
|
Line density(g/m)
|
break load(KN)
|
|
HJS-4
|
4
|
13
|
3.1
|
|
HJS-6
|
6
|
20
|
5.4
|
|
HJS-8
|
8
|
44
|
8.0
|
|
HJS-10
|
10
|
64
|
11.0
|
|
HJS-12
|
12
|
93
|
15.0
|
|
HJS-14
|
14
|
117
|
20.2
|
|
HJS-16
|
16
|
157
|
26.0
|
|
HJS-18
|
18
|
193
|
32.0
|
|
HJS-20
|
20
|
222
|
38.0
|
|
HJS-22
|
22
|
268
|
48
|
|
HJS-24
|
24
|
318
|
52
|
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