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Established a wireless sensor networks and a concrete plan is brought forward based On ZigBee technology. Corrected the time of network by Time Protocol. The hardware and software of the system is designed. Finally, the application effects of the system are analyzed and compared. The System realized the goals such as low cost, low consumption, high stability, high flexibility and expansibility. The...
Xiang Lia Load-balancing Clustering Algorithm of WSN for Data Gathering (LCA-DG) is proposed based on load equalization. The LCA-DG uses the comprehensive weight value that composed of two factors, that distance between head and members and residual energy, to improve cluster members choice strategy for balancing load of each bunch, and uses optimization threshold value and receiving threshold value...
Designed and implemented drivers for TSic506 high-precision temperature sensor and TSL2561T light intensity sensor in wireless sensor network using CC2430 as the core chip, put forward the dynamic pre-emptive priority scheduling mechanism for low-level tasks, and based on this, developed environmental data collection system in the wireless sensor network. Experimental results show that the scheme...
Aiming at the shortage of network source consumption and load balance in traditional shared tree multicast algorithm, this paper takes the network coding into account and puts forward a new shared tree multicast route protocol based on network coding. This algorithm adopts the method of minimum link consumption to select the node, and realizes the data transfer from multi-source nodes to multi-destination...
As one of the wireless communication technology, Ultra-Wide Ban(UWB) technology will be applied more in position in future for its advantage of high-speed, low-cost and low-power. The paper introduce the basic concept of UWB technology and the thing of domestic and foreign study. the current situations and problems of the emergency materials warehouse is analyzed. the paper put forward the assumption...
ZigBee is emerging in recent years, a network capacity, node, small size, simple structure, low rate, low power wireless communications technology. Based on the ZigBee protocol stack, appropriately streamlined and improved, with integrated VF-06-322 CC2430 node serial camera module, based on non-embedded operating system support for wireless sensor networks to achieve the image data fast and reliable...
Regardless of the traditional network, or wireless sensor networks, routing algorithms is the key support for network transmission technology. This paper focuses on the combination of GA and WSN routing algorithm, and analyzes the problem about hierarchy routing algorithm based on GA. Thus, this paper improves hierarchy routing algorithm using GA. The experiment result show that the performance of...
The received signal strength indication is usually used to measure the distance between two nodes. There are random errors and outliers in the received signal strength indication. In order to overcome the two ranging error on the positioning accuracy of localized nodes in wireless sensor network. In this paper, the characteristic of the analysis of two errors is proposed based on a weighted value...
In order to improve the reliability of gas monitoring in coal mine, we design a wireless sensor networks with the piezoelectric gas sensors, The wireless sensor networks is suitable for gas monitoring in the severe environment of coal mine. The networks' topology is sub-cluster type, and the cluster head node is selected in competitive method. Data fusion and routing of the cluster nodes are controlled...
In order to solve environmental parameters monitoring problem of the individual small-scale greenhouse in Hanzhong area. The article provides a design of wireless greenhouse environment monitoring system based on ZigBee technology. The system uses SPCE3200 microcontroller as the core composition of data processing and monitoring terminals, it can control the CC2420 wireless data transceiver modules,...
In this paper, a multi-interface Wi-Fi node for Wireless Sensor Network (WSN) is constructed. Wi-Fi is connected through SPI (Serial Peripheral Interface Bus) to form the relatively energy saving wireless transmission. Along with other interfaces, the multi-interface function requirements are satisfied. Firstly, the overall module design framework is introduced, followed by the hardware and software...
In allusion to the current developing situation and shortcoming of transmission lin aeolian vibration monitoring. a transmission lin aeolian vibration monitoring system is designed based on CC2430 for wireless transmission, the design scheme and architecture are introduced. The emphasis of design is the system hardware circuit including sensor module, signal processing, filtering and amplifier module,...
Aimed at control automation and unmanned manage systems which are located in open country, field and orchard have difficult in putting wire, a wireless data communication system was designed. Wireless radio frequency technology was used as transmission interface in this system, STC89C52 micro control unit(MCU) was used as major controller and logic processer, wireless radio frequency chip CC1101 was...
Pressure was important measuring and controlling technical parameter during industrial production process. In order to operate industrial production well, pressure should be accurately measured and controlled. This system's wireless pressure transmitter module was composed of pressure sensor PTB203, A/D converter ADC0804, MCU STC89C52, wireless communication module CC1101 while receiver module was...
according to study the a Maximal Lifetime with Constrained Energy problem (MLCE)in a sensors net, we discuss the bound of the option value of mix integer program (MIP). Since the Maximun of the MIP is NP complete problem, so the exact solution can not be obtained, but the bound of the option value is exist. This paper use Lagrangian relaxation method to derive theoretical upper bound on the optimal...
Due to the limited capabilities of sensor nodes in Wireless Sensor Networks (WSNs) in terms of computation, communication, and energy, selecting the profitable detection strategy for lowering resources consumption determines whether the IDS can be used practically. The signaling game is used to set up an intrusion detection game modeling the interactions between a malicious sensor node and an IDS...
According to the greenhouse environment of the application needs,design of the thesis is about a greenhouse environment monitoring system. The wireless monitoring network system includes temperature gathering module and the wireless transmission module. Sensor nodes and the wireless transceiver module use core microprocessors of cc2430, to build wireless sensor networks based on ZigBee protocol. The...
Through the study of the Internet of Things technology, the idea combining EPC Internet of Things with WSN is proposed which demonstrates the integration feasibility of the RFID and WSN technology. In order to improve the efficiency of logistics enterprises all aspects in the transport process should be monitored which need to apply the Internet of Things technology into the logistics management system...
In-network data aggregation presents a critical challenge for data privacy in resource constraint wireless sensor networks. We propose a PAPF scheme, in which a novel p-function set taking advantage of the algebraic properties of modular operation is constructed. Thanks to the p-functions, nodes can perturb their privacy data without extra data exchange, and the aggregation result can be recovered...
The task process model is a very important part in wireless sensor-actuator network. Node types and task classification of wireless sensor-actuator network are introduced. The theory and the process of the task process method are analyzed and the specific task process of all kinds of nodes are researched.
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