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29 2019-01
Could ZigBee enable the truly universal remote con
Time of issue：2019-01-29
In case anyone wondered which of the various wireless controls and sensor standards is likely to gain more traction in coming years, consider that the ZigBee Alliance just scored some pretty major sup
29 2019-01
Time of issue：2019-01-29
ZigBee is an open wireless personal area network (Wireless Personal Area Networks) standard based on the IEEE 802.15.4 protocol. IEEE 802.15.4 defines the physical layer and medium access control layer, while ZigBee defines higher layers such as network layer and application layer.
29 2019-01
Mine Intrinsically Safe Precautions
Time of issue：2019-01-29
1. Mine intrinsically safe equipment can be used in coal mines, and its explosion-proof mark is ExibI or ExiaI. Intrinsically safe electrical products should be installed and used in accordance with the relevant provisions of the "Coal Mine Safety Regulations" and the working conditions required in the product instruction manual.
29 2019-01
Time of issue：2019-01-29
The so-called Bluetooth technology is actually a short-range radio technology. Using "Bluetooth" technology, it can effectively simplify the communication between mobile communication terminal devices such as handheld computers , notebook computers and mobile phones .
29 2019-01
Analysis of ZIGBEE's main competitors
Time of issue：2019-01-29
Zigbee is a brand-new, low-power, low-cost, low-complexity, low-speed short-range wireless network communication technology. It is also a hot spot for embedded applications.
29 2019-01
Advantages of ZigBee's Direct Sequence Spread Spectrum Communication
Time of issue：2019-01-29
The same frequency band, different communication methods are very different, such as ASK, FSK, FHSS, DSSS, etc., from the anti-interference ability, communication security confidentiality, reliability are different. The ZigBee system, like the CDMA system, adopts the Direct Sequence Spread Spectrum (DSSS) technology, which is a communication method with strong anti-interference ability, high confidentiality and reliability.
29 2019-01
Terminology explained: MIMO technology
Time of issue：2019-01-29
The so-called MIMO, as it literally means, is the abbreviation of Multiple Input Multiple Output. Most of the statements you see refer to the simultaneous transmission and reception of wireless network signals through multiple antennas, so data can be increased. transfer rate. However, a more correct explanation should be to say that after the network data is cut through multiple times, it is transmitted synchronously through multiple antennas. Since the wireless signal will take different reflection or penetration paths in order to avoid interference during the transmission process, so The time to reach the receiver will be inconsistent. In order to avoid data inconsistency and cannot be recombined, the receiver will have multiple antennas to receive at the same time, and then use the DSP recalculation method to recombine the separated data according to the factor of time difference, and then transmit the correct and fast data stream.
29 2019-01
Terminology Explanation: 802.11n
Time of issue：2019-01-29
Terminology Explanation: A wireless transmission standard protocol behind 802.11a/b/g by the Wi-Fi Alliance
29 2019-01
Ultra Wideband Wireless Communication UWB
Time of issue：2019-01-29
Wireless communication technology is one of the most rapidly developing and most dynamic technical fields. In this field, various new technologies and new methods emerge one after another. Among them, Ultra Wide Band (UWB) technology is a new wireless communication technology with huge development potential developed after the 1990s, and is listed as one of the top ten technologies for future communication.
29 2019-01
Time of issue：2019-01-29
Wireless access point 无线接入点 (WAP or AP) refers to a type of device that allows wireless devices (such as laptops) to connect to wireless networks through WI-FI, Bluetooth, etc., such as wireless routers. WAP is usually connected to wired network, which usually acts as a relay between wireless devices and wired networks. Most WAPs use the IEEE 802.11 standard.
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