The Fraunhofer Institute for Integrated Circuits is developing an IoT bus with IPv6 support and integrated security concepts. It is based on EIA / RS-485 and IEEE 802.15.4 standard communication bus, enabling measurement values ​​and control commands as well as secure and reliable data transfer connection of things. The IoT bus forms a cross-media communication protocol that unites the two worlds of WPAN and Fieldbus without complicated protocol conversion. The new technology IoT-Bus is part of the SEEDs project.
Although not specifically Fraunhofer IIS IoT bus for lighting control, it provides control of the LED lamps huge opportunity: bridging distance of up to 500 m, up to 1 MBit / s
IP Communication on the Internet of Things
In the context of the crossover and digitization of Industry 4.0, energy management and facility management, IP capabilities within end nodes are becoming more and more important. The Internet of Things (IoT) has special requirements for data rate, range, reliability, cost, flexibility, interoperability and, in some cases, data security. The agreement and the consistency of seamless data flow across different domains are critical to the realization of the Internet of Things. There are security risks in the Internet connection with data processing and cyber attacks.
Data Manipulation Security Communication on Energy Internet
In the field of energy management, the interconnection between producers and consumers becomes more and more necessary through the dispersal of power generation, simple, safe and reliable local resources. Especially in cloud-based applications, secure IP-based communications are required. It allows access through IP-enabled control devices (such as smartphones, tablets, or PCs) for visualization or control purposes. Fraunhofer IIS is developing a communications bus that, in addition to local communications, allows direct connection of system components over the Internet. It provides IoT-Bus reliable transmission at higher data rates and longer distances because it provides a legacy fieldbus and wireless solution. Distribution through automatic address assignment and installation becomes easy.
Features
The IoT bus is a fieldbus with IPv6 support and integrated security concepts. It combines the advantages of native Internet protocol support with the advantages of fieldbus, with a wide range, strong reliability, strong robustness and low latency.
The technology is based on a modification of the communication standard IEEE 802.15.4, which is the actual standard for wireless personal area networks (WPAN) and sensor networks, and therefore allows the use of these wired logs. This concept envisages communication on 2-wire or 4-wire lines. The 4-wire solution can also provide power for communication of communication nodes via the bus.
The use and adaptation of the IEEE standard 802.15.4 The IoT bus allows a medium-boundary communication channel. For the 802.15.4 node, a wired IoT bus and a wireless IEEE-standard integrated communications network can be implemented without breaking the protocol. Using special access methods allows the IoT-bus to communicate in real time. The serial interface uses the standard EIA-485 (RS-485), but it can also be applied to other interfaces.
The system consists of up to three different physical communication paths composition, based on the IEEE Std 802.15.4 actual IoT bus (1) can be extended IEEE 802.15.4 wireless node bus access method (2) as defined, and may be connected to the expansion bus of Things The Internet on the router (3).
Simple and flexible integration of standard protocols
The IoT bus uses 6LoWPAN to implement the IPv6 capability of the terminal node. This allows all TCP/IP-based protocols to be used conceptually. Apart from this, the end nodes can be sensors, actuators or the Internet of Things "Internet of Things" in context. They can simply communicate with the internet or connect to the cloud.
In addition, the IoT bus offers the possibility of so-called message and protocol tunneling through its data container concept, such as CAN messages. This feature can be used to extend the range of limited fieldbuses. Tunneling of CAN messages is taking place in the SEEDs project.
In contrast to wireless sensor networks and WPAN solutions, IoT bus scores have higher reliability, robustness, and greater point-to-point connection range. Compared with common building automation communication technology, it also provides real-time communications and IP functions and IT security for the IoT bus.
The unique features of the communication bus:
•by
Cross-Media Communication Connects Wired and Wireless Worlds IPv6 Based Fieldbuses
• Ideal combination of data rate and range for IoT applications
Data rates up to 1 Mbit / s, range up to 500 meters
• Real-time function
Through deterministic bus access methods
• IPv6 capabilities of end nodes
Supports IoT functions for Internet standards (6LoWPAN, UDP, IPv6, etc.)
• Consistency of the agreement
Compatible with radios based on IEEE 802.15.4
• Enable standardized application protocols
MQTT, MQTT-S, OPC-UA, CoAP
• Transmission of integrated security concepts
Using a standardized encryption method (TLS, D-TLS)
• No extra gateway required
Fast packet routing without protocol conversion
application:
• Even long-distance communication between local resources, producers, and consumers
• Optimize energy flow and energy management
• Intelligent Building Automation
• Internal grid control (DC and AC) communications
• System components connect directly to the Energy Internet
• Integrated smart meter (for local communication)
• Connect IoT system components
Possible application areas
With its IP capabilities and real-time capabilities, the IoT bus is suitable for a wide range of applications in industry 4.0, building automation, and energy management.
• CAN Range Expander
Using its data container concept, various protocols can be transmitted. This makes the IoT-bus available as a range expander. This feature is already available for the CAN protocol. Packet filters can be used to select which messages to transfer from one CAN domain to another CAN domain
• Industry 4.0
The IoT bus IoT-Bus allows interoperable production facilities to exchange information. Existing systems can be converted to IP for industrial applications
• Building Automation
Equipment in building automation systems, such as shutters, radiators, air conditioners, and lighting equipment, can easily be connected long distances to the IoT bus in large complexes. So you can achieve automated and manually controlled communications
• Safety lighting control
IoT applies to individual illumination control bus in modern architecture - for example, "Light As A Service" and "Human Cenctric Lighting"
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