Skip to main content

Posts

Showing posts from September, 2024

COMMUNICATION AND NETWORKING UNIT 3

  HOME               UNIT 1             UNIT 2            UNIT 3           UNIT 4             UNIT 5    UNIT III COMMUNICATION AND NETWORKING     IoT Access Technologies: Physical and MAC layers, topology and Security of IEEE 802.15.4,  802.15.4g,  802.15.4e,  1901.2a,   802.11ah   LoRaWAN – Network Layer: IP version  Constrained Nodes and Constrained Networks – Optimizing IP for IoT: From 6LoWPAN to 6Lo, Routing over Low Power and Lossy Networks  Application Transport Methods: Supervisory Control and Data Acquisition  Application Layer Protocols: CoAP  MQTT-  Data aggregation & dissemination. IOT SOFTWARES  Thonny IDE & Supported Softwares 

IEEE 802.15.4

  HOME               UNIT 1             UNIT 2            UNIT 3           UNIT 4             UNIT 5 IEEE 802.15.4 IEEE 802.15.4 is a low-cost, low-data-rate wireless access technology for devices that are operated or work on batteries.   IEEE 802.15. Protocol Stacks include: ZigBee:  ZigBee is a Personal Area Network task group with a low rate task group 4. It is a technology of home networking. ZigBee is a technological standard created for controlling and sensing the network. As we know that ZigBee is the Personal Area network of task group 4 so it is based on IEEE 802.15.4 and is created by Zigbee Alliance.  6LoWPAN:  The 6LoWPAN system is used for a variety of applications including wireless sensor networks. This form of wireless sensor network sends data as packets and uses IPv6 – providing the...

Recourse Management of IOT

  HOME               UNIT 1             UNIT 2            UNIT 3           UNIT 4             UNIT 5  Recourse Management of IOT Why Resource Allocation is important for IoT?   Highly efficient, maintained and cost-benefit network ensure the Quality of Service (QoS) standards. IoT architecture has various resources connected with the network. The resource allocation is an important aspect for QoS standards be- cause of efficient and effective allocation of resources in the IoT network. Re- source allocation is also responsible for high standard of security because in IoT architecture the data is divided in many data streams gathered from different sensors and different types of services are provided by the networked devices. The IoT networked resources consists computing elements, storage and energy...

ZigBee

  HOME               UNIT 1             UNIT 2            UNIT 3           UNIT 4             UNIT 5 ZigBee  ZigBee is a Personal Area Network task group with low rate task group 4. It is a technology of home networking. ZigBee is a technological standard created for controlling and sensing the network. As we know that ZigBee is the Personal Area Network of task group 4 so it is based on IEEE 802.15.4 and is created by Zigbee Alliance.   ZigBee is an open, global, packet-based protocol designed to provide an easy-to-use architecture for secure, reliable, low power wireless networks. Flow or process control equipment can be place anywhere and still communicate with the rest of the system. It can also be moved, since the network doesn’t care about the physical location of a sensor, pump or valve. IEEE802.15.4 de...

Modbus

  HOME               UNIT 1             UNIT 2            UNIT 3           UNIT 4             UNIT 5 Modbus Protocol Modbus is a data communication protocol that is based on a  request-response model. Previously  referred to as a master-slave protocol, the Modbus organization replaced the terms  master  and  slave  with  server  and  client  in 2020. Modbus is used for transmitting information between devices that are connected to buses or networks over serial lines or Ethernet and, increasingly, using wireless. Modbus is the most widely used network protocol in the industrial manufacturing sector. The  most common use case is the communication between a human-machine interface (HMI) or supervisory control and data acquisition (SCADA) system and a sensor, programmab...

BACnet

  HOME               UNIT 1             UNIT 2            UNIT 3           UNIT 4             UNIT 5 BACnet is a communications protocol that is typically used by building management systems or process controllers to connect, monitor and control process values. BACnet can be used to connect to assets and allows multiple devices to initiate conversation and share data and information. BACnet can be used to control HVAC systems,  BMS systems  and other devices as well as allow them to to connect to graphical interfaces for the end user.  BACnet is both an international (ISO) and ANSI standard for interoperability between cooperating building automation devices. The protocol defines a set of rules and standards, such as the structure of messages or network addressing, and more specifically, it defines what k...