Zigby

Zigby Weitere Staffeln der Serie
Zigby, das Zebra ist eine australisch-kanadisch-singapurische Computeranimationsserie um ein anthropomorphes Zebra. Die Serie basiert auf Büchern des schottischen Schriftstellers Brian Paterson. Auf einer paradiesischen Insel lebt Zigby, das Zebra, im Kreise seiner Freunde. Unternehmungslustig und neugierig, wie Zigby ist, kommt mit ihm nie. Zigby, das Zebra ist eine australisch-kanadisch-singapurische Computeranimationsserie um ein anthropomorphes Zebra. Die Serie basiert auf Büchern des. Mit seinen zwei besten Freunden Bertie und Matze erlebt Zigby aufregende Abenteuer. Zigby als Regisseur des Theaterstücks. Er hat schief auf dem Kopf eine. Zigby, Bertie und Matze machen sich auf, um auf der anderen Seite des Flusses gemütlich zu picknicken. Kaum sind sie jedoch unterwegs, da lässt ein. Entdecken Sie Zigby - Das Zebra, DVD 1 und weitere TV-Serien auf DVD- & Blu-ray in unserem vielfältigen Angebot. Gratis Lieferung möglich. Zigby, das Zebra: 3-D-animierte Abenteuer mit Zigby, dem Zebra und seinen Freunden Bertie und Matze.

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Zigbee is a low-cost, low-power, wireless mesh network standard targeted at battery-powered devices in wireless control and monitoring applications.
Zigbee delivers low-latency communication. Zigbee chips are typically integrated with radios and with microcontrollers.
Zigbee operates in the industrial, scientific and medical ISM radio bands: 2. Zigbee builds on the physical layer and media access control defined in IEEE standard The specification includes four additional key components: network layer, application layer, Zigbee Device Objects ZDOs and manufacturer-defined application objects.
ZDOs are responsible for some tasks, including keeping track of device roles, managing requests to join a network, as well as device discovery and security.
The Zigbee network layer natively supports both star and tree networks, and generic mesh networking. Every network must have one coordinator device. Within star networks, the coordinator must be the central node.
Both trees and meshes allow the use of Zigbee routers to extend communication at the network level. Another defining feature of Zigbee is facilities for carrying out secure communications, protecting establishment and transport of cryptographic keys, ciphering frames, and controlling device.
It builds on the basic security framework defined in IEEE Zigbee-style self-organizing ad-hoc digital radio networks were conceived in the s.
The IEEE In September , the Zigbee Specification was announced, obsoleting the stack [5] The specification replaces the message and key—value pair structure used in the stack with a cluster library.
The library is a set of standardised commands, organised under groups known as clusters with names such as Smart Energy, Home Automation, and ZigBee Light Link.
In January , Zigbee Alliance renamed the library to Dotdot and announced it as a new protocol to be represented by an emoticon :.
They also announced it will now additionally run over other network types using Internet Protocol [7] and will interconnect with other standards such as Thread.
Zigbee Pro, also known as Zigbee , was finalized in A Zigbee Pro device may join and operate on a legacy Zigbee network and vice versa.
Zigbee protocols are intended for embedded applications requiring low power consumption and tolerating low data rates.
The resulting network will use very little power—individual devices must have a battery life of at least two years to pass certification. Zigbee is not for situations with high mobility among nodes.
Hence, it is not suitable for tactical ad hoc radio networks in the battlefield, where high data rate and high mobility is present and needed.
Established in , the Zigbee Alliance is a group of companies that maintain and publish the Zigbee standard.
The organization publishes application profiles that allow multiple OEM vendors to create interoperable products. The relationship between IEEE Over the years, the Alliance's membership has grown to over companies, including the likes of Comcast, Ikea, Legrand, Samsung SmartThings , and Amazon.
The requirements for membership in the Zigbee Alliance cause problems for free-software developers because the annual fee conflicts with the GNU General Public Licence.
The first Zigbee application profile, Home Automation, was announced November 2, The Zigbee Smart Energy 2. It is an enhancement of the Zigbee Smart Energy version 1 specifications.
It is being developed by partners including:. It promised many advantages over existing remote control solutions, including richer communication and increased reliability, enhanced features and flexibility, interoperability, and no line-of-sight barrier.
The radio design used by Zigbee has few analog stages and uses digital circuits wherever possible. Products that integrate the radio and microcontroller into a single module are available.
The Zigbee qualification process involves a full validation of the requirements of the physical layer. All radios derived from the same validated semiconductor mask set would enjoy the same RF characteristics.
Zigbee radios have very tight constraints on power and bandwidth. An uncertified physical layer that malfunctions can increase the power consumption of other devices on a Zigbee network.
Thus, radios are tested with guidance given by Clause 6 of the This standard specifies operation in the unlicensed 2. Sixteen channels are allocated in the 2.
The radios use direct-sequence spread spectrum coding, which is managed by the digital stream into the modulator. The actual data throughput will be less than the maximum specified bit rate due to the packet overhead and processing delays.
For indoor applications at 2. The current Zigbee protocols support beacon-enabled and non-beacon-enabled networks.
In this type of network, Zigbee routers typically have their receivers continuously active, requiring additional power. However, this allows for heterogeneous networks in which some devices receive continuously while others transmit when necessary.
The typical example of a heterogeneous network is a wireless light switch : The Zigbee node at the lamp may constantly receive since it is reliably powered by the mains supply to the lamp, while a battery-powered light switch would remain asleep until the switch is thrown.
In which case, the switch wakes up, sends a command to the lamp, receives an acknowledgment, and returns to sleep.
In such a network the lamp node will be at least a Zigbee router, if not the Zigbee coordinator; the switch node is typically a Zigbee end device.
In beacon-enabled networks, Zigbee routers transmit periodic beacons to confirm their presence to other network nodes. Nodes may sleep between beacons, thus extending their battery life.
Beacon intervals depend on data rate; they may range from Long beacon intervals require precise timing, which can be expensive to implement in low-cost products.
In general, the Zigbee protocols minimize the time the radio is on, so as to reduce power use. In beaconing networks, nodes only need to be active while a beacon is being transmitted.
In non-beacon-enabled networks, power consumption is decidedly asymmetrical: Some devices are always active while others spend most of their time sleeping.
Except for Smart Energy Profile 2. The standard specifies the lower protocol layers —the physical layer PHY , and the media access control portion of the data link layer DLL.
That is, the nodes communicate in a way somewhat analogous to how humans converse: a node briefly checks to see that other nodes are not talking to it, before it starts—but with three notable exceptions.
Beacons are sent on a fixed-timing schedule and do not use CSMA. Message acknowledgments also do not use CSMA. Finally, devices in beacon-enabled networks that have low-latency, real-time requirements may also use guaranteed time slots GTS , which by definition do not use CSMA.
The software is designed to be easy to develop on small, inexpensive microprocessors. For more detail, please use one or more of the sources listed in the References section below, or go directly to the Zigbee Alliance web site using the External links provided below.
The main functions of the network layer are to enable the correct use of the MAC sublayer and provide a suitable interface for use by the next upper layer, namely the application layer.
Dotdot gives product developers the freedom to choose the network that works for their application, and consumers the freedom to choose the brands and products that transform the way we live, work and play.
Green Power offers an even lower power solution perfect for devices that need to be batteryless or extremely low-power usage. As one of the most well-known and established standards in the industry; we enable you to create devices that just work.
Our world-renowned certification program and our large focus on interoperability assure consumers and developers that devices will interoperate.
We provide multiple technologies that are extremely low-power. Devices that can last years on tiny batteries are our specialty.
Make home feel more at home by adding smart devices that can control your home the way you want it. The whole idea behind the smart home it to have everything talking to everything, so you stay informed while your devices stay informed too.
That might be that your lighting talks to your security camera or that your smart coffee machine turns on when you get out of bed.
The Internet of Things might be a fairly useless term, but essentially, that's what's happening - everything is connected, meaning that information can be shared and your life can be controlled without the need to visit each thing individually.
All of these connected devices are being handled by automatic systems over a single network. The result?
You have a smart home, thanks to smart applications and devices. But there's just one problem: many companies make these different devices.
In order to get them to work together on a single network, you have to use a single common language. That's where Zigbee comes in.
Zigbee is based on the IEEE's All you need to know is that Zigbee is a specification that's been around for more than a decade, and it's widely considered an alternative to Wi-Fi and Bluetooth for some applications including low-powered devices that don't require a lot of bandwidth - like your smart home sensors.
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Zigby - Intro
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