Wednesday, March 30, 2011

Zigbee

Zigbee is synonymous with IEEE 802.15.4 agreement. According to this agreement and the technology is a kind of short, low power wireless communication technology. The name comes from the character of dance, due to the bee bee is flying and "buzz" by the "dance to dither wings to and companion transfer pollen location position information, i.e. the bees rely on such form a group of communication networks. Its characteristic is close, low complexity, self-organization, low power consumption, low data rate, low cost. Mainly suitable for automatic control and remote control field, can embed various equipment. In short, ZigBee is a cheap, low power close distance, wireless network communications technologies.
ZigBee origins
ZigBee, it is similar with bluetooth. Is a kind of burgeoning short-range wireless technology.
Used for sensing control application (control) and be
This idea was put forward in 802.15 workgroup IEEE, so TG4 working group was established, and setting standard IEEE 802.15.4.
In 2002, ZigBee Alliance established.
In 2004, ZigBee V1.0 birth. It is the first standard ZigBee. But since launch hasty, has some mistakes.
In 2006, launched in 2006, comparatively perfect ZigBee.
The end of 2007, ZigBee PRO launch
The underlying technology based on IEEE ZigBee 802.15.4.
The physical and MAC layer directly quoted the IEEE 802.15.4
In the use process bluetooth technology, people found bluetooth though has many advantages, but there are still many defects. For industrial, family automation control and industrial telemetry remote sector, bluetooth seems too complex, power, closer too small, networking, and industrial automation, such as the demand for wireless data communication is stronger and stronger, and, for the industrial field, the wireless data transmission must be high reliable, and can resist the industrial field of electromagnetic interference. Therefore, after people long-term efforts, ZigBee agreement comes out formally in 2003. In addition, Zigbee used before it studied by family network communication protocol for Home RF Lite.
Long-term since, low price and low bit rate, short, low power wireless communication market has been there. Since the Bluetooth after appearing, ever let industrial control, household automatic control, toy manufacturers, etc, but by companies Bluetooth caper stubbornly high, the price of seriously influence the use of these manufacturers will. Now, these companies were involved in the IEEE802.15.4 group, is responsible for the formulation of the physical layer and media ZigBee media access layer. IEEE802.15.4 standard is an economic and efficient, low-data-rate (< 250kbps), working in 2.4 GHz and 868/928MHz wireless technology used for personal area network and a peer-to-peer network. It is ZigBee application layer and the network layer protocol foundation. ZigBee is a new kind of close, low complexity, low power consumption, low data rate, low cost wireless network technology, it is a cross between a bluetooth wireless markup technology and the technical proposal between. Mainly used for close wireless connections. Its basis 802.15.4 standard, in thousands of tiny sensors coordination realize communication between. These sensors only need little energy to relay way through radio waves will data from a network node to another node, so their communication efficiency is very high.
Xbee/xbee - pro ZigBee module
Based on the XBeePRO XBee/Ember chips of module is a built-in protocol stack ZigBee module, it through the serial use AT command set and the API command set two ways to set module parameters, and through a serial port to realize the data transmission. In order to shorten the development cycle, users provides X-ray CTU (AT command) and ZigBee Operator two configuration software in a short time, can XBeePRO module XBee/familiar the development.
ZigBee pro xbee - Operator development package
According to the XBeePRO Ember chip XBee/assembly is a paragraph of development based on the XBeePRO module XBee and ZigBee development kit, through development kit can understand the use of XBeePRO module XBee/method of development, and the use of simple ZigBee technology, this system provides a set of exclusive XBee series module development application software ZigBee ZigBee Operator, Operator, through XBeePRO module can be the XBee/the function of perfection. Summary:
1. Work for ISM 2.4 GHz frequency
2. HaoWa XBee power output for 1 (0 dBm) (up to 100 meters range)
3. XBeePRO power output for 60 HaoWa (18 dBm), 100 HaoWa EIRP (as much as 1 mile range)
4. U.F l. RF connectors, SMA antenna, telescopic antenna can be chosen
5. Industry-specific temperature range (40 ° C) - 85
6. In the United States, Canada, Australia and Europe used extensively, and has been approved.
7. Support advanced network and low power consumption mode (support ZNET2.5 and ZigBee)
8. Support no.5 12bit AD (development board used 2 road)
9. And development kit supporting the manual
10. Digi original X - CTU software, the use of this software can be convenient for module configuration.
11. ZigBee Operator software, can use through the software to realize various complex function. 

No comments:

Post a Comment