Come back from school has been doing to the development of shandong box, the edge of computing from nothing to have a certain understanding, also thank that day have the opportunity to listen to the boss and chairman of the box manufacturers, CTO of some dialogue, has a deeper cognition to edge calculation, later also refer to the relevant information, sorting out the notes below.
But lu box
A new generation of high-performance configurable communication servers with application-layer protocol conversion and data centralization capabilities can be temporarily understood as edge servers in the following.
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Quickly and conveniently convert one or more protocols to the required protocols.
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Reduce the complexity of system protocol conversion to achieve high-performance and intelligent protocol conversion.
In addition, it is said that the lower 70 degrees to the upper 70 degrees zero no pressure operation.
Edge of computing
concept
A method of processing data in a location physically closer to where it was generated. Iot the things and people that generate data are often not in the cloud, so we need to complement cloud computing at the edges of iot solution architectures in a variety of ways. We adopt the principle of proximity in data processing. The collected data is combed and processed by searching for the nearest edge computing processing platform, which can safely transmit the processed data to the cloud, so as to reduce the computing pressure and broadband access of the cloud in this way.
Why Edge Computing is needed
Along with the development of the Internet of things, al equipment speed increase, if each device directly and cloud data interaction, will bring huge pressure to access to the clouds, this time we can use the edge to calculate this way to relieve the pressure of the cloud, edge computing in recent years, it is impossible to replace of cloud computing, only will coexist, create greater value. The real value of edge computing lies in creating an integrated system by connecting connected devices together and integrating them into a more complex whole.
The architecture of traditional cloud computing is Iaas+Paas+Saas
The idea behind edge computing is to bring computing power closer to the data source. Here’s how it works:
Ability and Composition
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Localized computing power (edge servers)
Data computation and processing, and even application deployment on edge servers
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Network transmission (edge network, edge router, wifi, etc.)
Data on the cloud is synchronized upward and downward
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Certain storage capacity
Application data, device-related data, collected data
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Protocol conversion
Iot device protocol and cloud protocol conversion
What can do
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Interacting with the cloud
Periodic or real-time data interaction
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Interact with iot devices
Collect data, view device distribution, device status, and control device operation.
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Some service systems are used offline
When the network is disconnected, normal business operations can be used as backup systems of some companies and institutions, such as hospitals. When the cloud server is faulty or disconnected, edge servers can be used for business processing without affecting normal business activities. Data can be uploaded when the cloud recovers.
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You can do calculations without the Internet
The device has computing power and does not rely on the cloud.
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Avoid network latency problems
Computations are done locally in real time, not in the cloud, minus most of the time spent over the network.
Iot protocol related
As a technical system of the Internet of Things, perception, processing and action are the three most important events, which can be divided into four levels:
- Sensing control layer (sensing and control transmission)
- Network Layer (Data transmission)
- Platform (communications, data, management)
- Application layer (data analysis and implementation of related applications)
Multiple protocols coexist with problems
- There are many in the wireless network protocol, Zigbee, Wave, Xmesh, SmartMesh/TSMP, etc
- Most chip vendors are only compliant with their own standards at different protocol layers (PHY,MAC,L3) and lack interoperability
- Many simple RF chips have no MAC protocol
- Lack of interoperability solutions, such as different architectures, different protocol stacks, and interconnectivity.
The Internet of things requires transport protocols
The Internet of Things is a network, which needs a unified protocol basis, just like the Internet needs TCP/IP. In terms of core layer, as the Internet is an extension of the Internet, it is also based on TCP/IP. But at the access level, there are many types of protocols, such as RFID, Zigbee, Bluetooth, GPRS, Wi-Fi, 3G, 4G, wired and other channels.
The Internet of Things requires IP addresses
The Internet of Things needs an address, and every thing in the Internet of Things needs to be addressed, so you need an address. With IPv4 running out, IPv6 is needed.
protocol
A network protocol
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RFID
ISO recognized as a good means of automatic identification and data acquisition, domestic integrated circuit chip and embedded software development is the next focus, China’s RFID is also in the ongoing specification.
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ZigBee
Low power LAN protocol based on IEEE802.15.4 standard is a short distance, low power wireless communication technology. The protocol is divided into physical layer (PHY), media access control layer (MAC), transport layer (TL), network layer (NWK), application layer (APL) and so on.
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bluetooth
Short range radio technology.
Outside the network protocol
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WI-FI
High speed, high reliability, convenient integration with the existing Ethernet, low networking cost, like Bluetooth, one-to-one interconnection.
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2G
Second generation mobile communication technology
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2.5 G
General packet wireless service technology
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3G
Third generation mobile communication technology
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4G
Fourth generation mobile communication technology
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NFC
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