Self-Healing Research of ZigBee Network Based on Coordinator Node Isolated

2013 ◽  
Vol 347-350 ◽  
pp. 2089-2094
Author(s):  
Ming Jiang Huang ◽  
Tao Wang
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Mesh Network ◽  
Wireless Sensor ◽  
Self Healing ◽  
Single Chip ◽  
Child Node ◽  
Long Time ◽  
Parent Node ◽  
The Coordinator

A single-chip solution is proposed to realize the node design based on 2.4 GHz ZigBee wireless sensor network. Mesh network topology is achieved by the use of ZigBee Pro protocol stack on the hardware platform. When the packets are successfully sent to the coordinator node, a relevant event will be generated by the local node. Hence, the parent node lost event can be obtained by comparing the number of the packets sent by the child node and the number of the packets sent successfully shown by the respond event. A wireless sensor network is designed to work independently from the coordinator node and can be re-connected according to the needed set to resume the network. When the coordinator node is taken away from the site or power down by happenstance and power up again after a long time, the parent lost event in the child nodes can make it rejoin the new coordinator node again when needed. The network self-healing function can be achieved by this mechanism that makes the network more stable.

Energy-Aware Chaotic Communication in Wireless Sensor Network

2013 ◽  
Vol 367 ◽  
pp. 536-540 ◽  
Author(s):  
Raju Dutta ◽  
Shishir Gupta ◽  
Mukul K. Das
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Initial Conditions ◽  
Wireless Sensor ◽  
Time Behavior ◽  
Nonlinear Mathematical Model ◽  
Energy Aware ◽  
Long Time ◽  
Small Change ◽  
Authentic Data

A challenging task in wireless sensor network (WSN) is to deliver authentic data between source nodes and sink nodes. The collision or dead lock occurs when two or more close nodes are attempted to send data at the same time to the others node. To avoid such dead lock situation in the network we propose a nonlinear mathematical model. The effect of nonlinearity often renders a periodic solution unstable for certain parametric choices even a very small change in initial conditions can lead to different result in chaotic systems which appears to exhibit chaos for a range of parametric values when long time behavior studied. The local stability conditions for the system have been discussed and analyzed. Numerically simulations have been carried out to study the complex behavior of the system for reasonable ranges of parameters in WSN.

scholarly journals Implementation of a Low-Cost Energy and Environment Monitoring System Based on a Hybrid Wireless Sensor Network

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Dong Sik Kim ◽  
Beom Jin Chung ◽  
Sung-Yong Son
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Low Cost ◽  
Mesh Network ◽  
Wireless Sensor ◽  
Wireless Sensor Node ◽  
Crystal Oscillator ◽  
Energy And Environment ◽  
Order Curve ◽  
Narrow Bandwidth

A low-cost hybrid wireless sensor network (WSN) that utilizes the 917 MHz band Wireless Smart Utility Network (Wi-SUN) and a 447 MHz band narrow bandwidth communication network is implemented for electric metering and room temperature, humidity, and CO2 gas measurements. A mesh network connection that is commonly utilized for the Internet of Things (IoT) is used for the Wi-SUN under the Contiki OS, and a star connection is used for the narrow bandwidth network. Both a duty-cycling receiver algorithm and a digitally controlled temperature-compensated crystal oscillator algorithm for frequency reference are implemented at the physical layer of the receiver to accomplish low-power and low-cost wireless sensor node design. A two-level temperature-compensation approach, in which first a fixed third-order curve and then a sample-based first-order curve are applied, is proposed using a conventional AT-cut quartz crystal resonator. The developed WSN is installed in a home and provides reliable data collection with low construction complexity and power consumption.

Study on Wireless Sensor Network Based on Laser Rangefinder

2011 ◽  
Vol 403-408 ◽  
pp. 2776-2779
Author(s):  
Li Wei ◽  
Chen Guang Zhao
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Test Point ◽  
Wireless Sensor ◽  
Laser Rangefinder ◽  
Wireless Data ◽  
Test Environment ◽  
Wireless Data Transmission ◽  
Collection Data ◽  
Long Time

A system of wireless sensor network(WSN) based on laser rangefinder is studied, which adopts low power consumption ZigBee chip and SimpliciTI network protocol. 8 laser rangefinders are used to collecy the distance of the test points. The collection data is sent to upper computer by wireless data transmission module. It is rapid and real time to monitor the test point. The system can be installed in complex test environment to perform the monitor of all kinds of architecture structure. It dispenses with long time power supply and the user interface is friendly and has abundance function.

Design of CO2 Collection Node Based on ZigBee

2012 ◽  
Vol 461 ◽  
pp. 281-284
Author(s):  
Zhi Liang Chen ◽  
Li Guo Tian ◽  
Meng Li ◽  
Yue Liu ◽  
Jie Ping Zhang
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Precision Agriculture ◽  
Wireless Sensor ◽  
Information Collection ◽  
Single Chip ◽  
Rf Transceiver ◽  
Single Chip Microcomputer ◽  
Consumption Data ◽  
Design Requirements

Precision agriculture relies upon the acquisition and processing of agricultural foundation information initially. One of important techniques of realizing it is the remote wireless low power consumption data collection. This paper employed the ZigBee wireless sensor network technology as well as AVR Atmega8L single-chip microcomputer and RF transceiver CC2530 as core parts, and eventually designed a wireless sensor network node for agriculture information collection. The node can accurately detect the concentration of CO2 in real time. Experiments show that the node works well, collects the data effectively and meets the design requirements

scholarly journals Routing of emergency data in a wireless sensor network for mining applications

2021 ◽  
Author(s):  
Mandana Jafarian
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Network Lifetime ◽  
Routing Protocol ◽  
Residual Energy ◽  
Mesh Network ◽  
Wireless Sensor ◽  
End To End Delay ◽  
Simulation Results ◽  
End To End

Emergency situations in mines result in loss of precious human lives. In this thesis we discussed architecture of a Wireless Sensor Network (WSN) that can be deployed in mines, which takes care of severe geographical and environmental constraints found inside mines. The proposed architecture is a two-level hierarchy of small sized WSNs that employs a wireless Mesh network as the backbone connecting small sized WSNs scattered inside mines. We proposed a routing protocol for that WSN that is optimized for both emergency and non-emergency data routing. Since our main goal is to provide safety in the mining environment, the main consideration of the routing protocol is to provide reliability and reduce the end-to-end delay for vital emergency traffic while optimizing for network longevity for non-emergency traffic. We present a new cost-based routing protocol called MDML, which provides Minimum Delay and Maximum Lifetime routing for such networks. The proposed MDML routing defines separate cost metrics for emergency and non-emergency traffic. It finds the least-cost path for the reliable delay-constrained emergency traffic with regards to link error rate but also gives secondary consideration to nodes' residual energy. It is an energy efficient routing scheme for non-emergency or regular data traffic routing that maximizes the network lifetime. However, for emergency traffic energy efficiency is compromised to achieving minimal delay. Regular traffic is generated through periodic monitoring and is delay-insensitive. For regular traffic delivery, a shortest path routinig algorithm is employed which uses link costs that reflect both the communication energy consumption rates and the residual energy levels at the two end nodes. Simulation results show that using the proposed emergency routes reduces the end-to-end delay for emergency traffic. The effect of protocol update cycle on increasing the network lifetime is verified true simulation. MDML is also compared with a simulated non-MDML approach to compare the lifetime and delay performance. Simulation results have demonstrated the effectiveness of our approach.

scholarly journals ZONE BASED SECURED ENERGY EFFICIENT MECHANISM IN WIRELESS SENSOR NETWORKS FOR EFFICIENT COMMUNICATION

2017 ◽  
Vol 16 (4) ◽  
pp. 6889-6894
Author(s):  
Pankaj Kumar ◽  
Ramanjeet Singh
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Energy Efficient ◽  
Base Station ◽  
Base Stations ◽  
Wireless Sensor ◽  
Sensitive Information ◽  
Self Healing ◽  
Security Mechanism ◽  
Cryptographic Keys

Wireless sensor network has revolutionized the way computing and software services are delivered to the clients on demand. Wireless sensor network is very important to the mankind. It consist of number of sensor called nodes and a base station. Nodes collect data and send to the base station. There are number of nodes which send data at a time. So, number of problems are occurred. Usually the WSNs are automated, that is they work without the human intervention. In such cases it becomes very crucial that the network must have the capability of self-healing security mechanism to handle with all the types of attacks. Without the use of security mechanism, the data can be altered or hacked by some intruder in the network. The nodes are connected with each other without a wired connection through the base stations, they are highly prone to the hacking attacks. WSNs are used to sense various environmental or other parameters which can be used to predict natural hazards, climatic changes or other types of data analysis. During the periods when the WSN nodes are in working condition, they need secure cryptographic keys for secure propagation of the sensitive information. The present research is focused on the design of energy efficient security mechanism for improved reliability in sensor based environment. The RSA encryption algorithm has used for encryption purposes.

scholarly journals Mathematical modelling and application of frog choruses as an autonomous distributed communication system

2019 ◽  
Vol 6 (1) ◽  
pp. 181117 ◽  
Author(s):  
Ikkyu Aihara ◽  
Daichi Kominami ◽  
Yasuharu Hirano ◽  
Masayuki Murata
Keyword(s):  
Mathematical Model ◽  
Wireless Sensor Network ◽  
Mathematical Modelling ◽  
Sensor Network ◽  
Time Scale ◽  
Wireless Sensor ◽  
Multiple Time Scales ◽  
Short Time Scale ◽  
Long Time ◽  
Short Time

Interactions using various sensory cues produce sophisticated behaviour in animal swarms, e.g. the foraging behaviour of ants and the flocking of birds and fish. Here, we investigate the behavioural mechanisms of frog choruses from the viewpoints of mathematical modelling and its application. Empirical data on male Japanese tree frogs demonstrate that (1) neighbouring male frogs avoid call overlaps with each other over a short time scale and (2) they collectively switch between the calling state and the silent state over a long time scale. To reproduce these features, we propose a mathematical model in which separate dynamical models spontaneously switch due to a stochastic process depending on the internal dynamics of respective frogs and also the interactions among the frogs. Next, the mathematical model is applied to the control of a wireless sensor network in which multiple sensor nodes send a data packet towards their neighbours so as to deliver the packet to a gateway node by multi-hop communication. Numerical simulation demonstrates that (1) neighbouring nodes can avoid a packet collision over a short time scale by alternating the timing of data transmission and (2) all the nodes collectively switch their states over a long time scale, establishing high network connectivity while reducing network power consumption. Consequently, this study highlights the unique dynamics of frog choruses over multiple time scales and also provides a novel bio-inspired technology that is applicable to the control of a wireless sensor network.

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