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Nowadays, wireless networks have become an indispensable part of the public, and wireless routers carrying wireless networks are particularly important.
A wireless router is generally placed in a fixed location such as a home or office, and transmits wireless signals for use by wireless devices within a certain range. Among them, there are several parameters that must be studied well.
Frequency bands: There are currently two main frequency bands – 2.4 GHz and 5 GHz.
The early wireless routers may only have a frequency band of 2.4 GHz. The main feature is that the signal coverage is wide and the reflection effect is strong. However, because too many wireless devices are working in this frequency band, the 2.4 GHz frequency band is relatively crowded and slow (can be compared to The narrower and multi-car road); the 5GHz band is a new frequency band developed later, with a newer protocol and higher bandwidth, so the wireless device supporting 5GHz is relatively faster (can be compared to Wide and small car highways, but due to the weak reflection effect and small signal coverage, the area covered by the indoor environment is relatively inferior to the 2.4GHz frequency band.
Today's wireless routers basically have 2.4GHz and 5GHz bands, but also note that some entry-level routers may lack the 5GHz band. Higher-end or special-purpose wireless routers will have two 5GHz bands for gaming or bridging, Mesh networks. At the time of selection, when the budget is sufficient, try to choose a wireless router with both 2.4GHz and 5GHz bands, which can take care of the old wireless devices and bring a better network experience to the newer wireless devices.
(Highest) rate: We often see a value like 1200M on the name of the router. It is the rate. To be precise, it should be written as 1200Mbps. This rate is actually the highest rate that wireless router theory can achieve, and 1200M means it can reach a maximum speed of 1200Mbps.
But this still depends on the speed of the broadband network that is connected. Sometimes even if your router is 1200M, you can access 20M broadband. Actually, you can only download 2.5M/s. In addition, due to factors such as distance, obstacles, and the performance of the receiving device during the transmission process, the actual download upload speed cannot reach the highest rate of the router.
For the average family, depending on the actual use, you can choose a wireless router with a speed of around 1200M. You can consider a more powerful wireless router.
Wireless Protocol: Mainly developed by the Wi-Fi Alliance, currently has 802.11a/b/g, 802.11n, 802.11ac, etc. Among them, 802.11b/g can only work in the 2.4GHz band, 802.11n can work in the 2.4GHz and 5GHz bands, and 802.11a/ac works in the 5GHz band. From 802.11n, wireless routers began to support MIMO multi-antenna transceiver technology.
Considering that the 802.11a/b/g protocol is lagging behind, the tails choose wireless routers that support 802.11n and 802.11ac when selecting wireless routers.
Technology: After the 802.11n protocol, MIMO multi-receive multi-transmission technology is applied to wireless devices, including not only wireless routers, but also mobile devices such as mobile phones and computers. Simply put, it speeds up uploading and downloading by simultaneously transmitting and receiving multiple antennas. That is, a wireless router supporting MIMO technology divides a data packet into multiple antennas for simultaneous transmission, and the receiving terminal receives the split after receiving multiple antennas. The data is synthesized and used for fast transmission.
Nowadays, there is a new technology called MU-MIMO multi-user multi-receiving and multi-issue technology. As the name suggests, it increases the simultaneous transmission and reception of multiple devices. Therefore, only routers with MU-MIMO technology can be called complete. 802.11ac protocol router.
MIMO technology requires both sender and receiver support, so the requirements for the device are high. However, most high-end mobile phones and notebooks currently support MIMO technology, and wireless routers naturally have to keep up. Therefore, MIMO technology is equally important even for the average family. The MU-MIMO technology is mainly used in wireless routers. At present, it is a symbol of high-end routers, and ordinary users can temporarily wait and see.
Antenna: The antenna is not to say that the better, because some wireless routers will be built into the antenna to keep the appearance simple, and the built-in antenna does not have much impact on the signal. Among them, there are many routers with a built-in antenna.
The antenna has a certain effect on the rate. Wireless routers that support the 802.11n protocol support up to 150 Mbps for one antenna, while wireless routers that support the 802.11ac protocol support up to 433 Mbps for one antenna. Therefore, in addition to the 1200M rate router mentioned above, there will be a higher rate router.
System: Considering that the homogenization of most wireless routers is very serious, many router vendors have begun to make a fuss about performance and systems. Some routers will be equipped with more open systems and strong performance, allowing users to do customized, personalized things, such as remote download, remote control functions, etc., to a large extent, to provide users with convenience, but sometimes It is easy to increase the instability of the router.
When selecting a router, it depends on the actual usage. If there are not too many requirements for the router, only stable and simple, then the system can be completely ignored.
Bridging and Mesh network technology: In the face of large units, a router often cannot be completely covered, so there will be the birth of wireless bridging technology and Mesh network technology.
Wireless bridging is mainly to use a wireless router to convert wired broadband network signals into wireless network signals, and another router as a springboard for signal amplification. Even if there are more than two routers, it can only be connected in a single pair. , that is, a linear connection. At this point, if one of the routers fails, the next few routers cannot connect to the network.
The Mesh mesh network converts wired broadband network signals into wireless network signals through a wireless router and simultaneously amplifies signals through multiple routers as a springboard. In a router with more than two Mesh network technologies, it It can be connected in a many-to-many form, ie a mesh connection. At this point, even if one router fails, the signal can still be transmitted through other routers.
Mesh mesh network technology will support the large-sized space better, so if there is a requirement for the area covered by the signal, you can consider the Mesh mesh network router, but the price is relatively higher.
In general, the choice of routers needs to pay attention to the above points. As for what price to choose, it is natural to look at the wallet!
Ethernet Slip Ring is a device that allows Ethernet signals to be transmitted through a rotating assembly. This device is typically used in applications where it is not possible or practical to run Ethernet cables, such as in an application where the cables would have to travel through a hazardous area. It converts the regular Ethernet signals into rotary signals, which are then transmitted through the rotating assembly.
There is a growing trend in the industry for Ethernet slip rings. Ethernet slip rings are currently being used to interconnect computer networks. A slip ring is a transmission device that uses a counter-rotating encircling belt to transfer power and data between two or more devices.
Senripgrid Conductive Slip Ring has the following characteristics Direct unplugging of the RJ45 connector Upon reaching eight simultaneous ports, follow the standard cable connection method Work with either copper or gas-liquor joints Transmission to the external network (10M, 100M, 1Km Base T).
Ethernet Slip Ring,Generator Collector Rings,Through Bore Rotary Union,Rotary Pressure Joint
Dongguan Oubaibo Technology Co., Ltd. , https://www.sliprobs.com