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Pollution detection and monitoring is very crucial task in todays world. To create better and safer environment for human being, animals, plants we need to monitor and control the pollution. This study proposes air pollution and monitoring model which detects pollution in air on the basis of data mining algorithm. The sensor grid is used to detect the sensor values from different gas sensors. Microcontroller...
Wireless Sensor Network is fabricated by the deployment of many miniature devices (sensors) which are capable of sensing, communicating and computing. These networks are susceptible to security threats due to unattended deployment of sensors. There are many attacks on information in transit, out of all Black hole attack or packet dropper is a denial of service attack in which an intruder persuades...
We developed an information community system by applying a user model-based application for supporting daily life. Our information community system is designed to provide appropriate services to users depending on their needs; thus, we applied a user model-based application, which can help select and filter user information, to our system for providing appropriate services to users. For achieving...
In view of the weakness of present weighing system for mining shovel, this paper raises a designing method for mining shovel weighing system based on wireless sensors network technique. The configuration of hardware of sensor node, and software design are introduced in detail. Experiments show that the system has high measuring precision, good stabilization and is easy to be installed.
Wireless Sensor Networks (WSNs) consist of small nodes with sensing, computation, and wireless communication capabilities. Wireless Sensor Network (WSN) is a promising data mining solution for precision agriculture. Instrumented with wireless sensors, it will become available to monitor the plants for real time, such as air temperature, soil water content, and nutrition stress. This real time information...
Many studies already indicated that cooperative learning can promote learners' interest than learning process purely based on individual competition, so that learners could get more enthusiastic while they can get involved in learning activities. Nevertheless, cooperative learning usually groups students by means of random or normal distribution approach, it is not a thoughtful means for learners...
Using advanced wireless radio frequency PTR2000 module, with underground pressure sensors, design a set of Wireless monitoring System for mine pressure based on PTR2000. Detailed introduce the hardware and software structure, and describe the working principle of the system to achieve a variety of underground mining pressure measurements, data processing and wireless communication.
In wireless sensor networks, A critical aspect of applications with wireless sensor network is to obtain long system lifetime, as well as maintain sufficient sensing coverage and reliability. In this paper, firstly, we will model the Area Coverage Problem (ACP), which will be changed into a set coverage problem. Secondly, a central-scheduling will be mentioned based on our modeling. Our central-scheduling...
The manner of organizing the sensors in the wireless sensor network for increasing the capability and optimized using of the sensors is of great importance. Hence considering coverage parameter in every Wireless Sensor Network (WSN) is extremely essential and critical. The matter of overlapping covered area by sensors in 2D space had been considered until now. This paper is suggested a pattern in...
When both a high-priority and a low-priority system share a common frequency band, the low-priority station must sense the presence of the high-priority system, and if required, postpone its transmission or reduce its transmit power to avoid possible interference. To compensate, transmission opportunities of the low-priority system should be ensured as much as possible. Using a transmission scheme...
The Voronoi diagram is the one of most fundamentals in computation geometry. The coverage control, especially the barrier coverage, will benefit from this diagram. Using the Voronoi diagram, the coverage holes can be detected in short time. In the lax demands which only include the influence of two neighbor sensors, the minimal exposure track based on the Voronoi can approach the optimal. But, because...
This paper considers statistical issues of source localization from received signal strength (RSS) measurements affected by log-normal shadowing with focus on bias and variance. We characterize the class of all unbiased estimates of the source position and show that their error variances grow exponentially with the noise power. Finally, we propose an estimate the bias and error variance of which are...
Vehicular ad-hoc networks (VANETs) are promising for more and more intelligent transportation applications, where information is disseminated over a group of vehicles. VANETs are characterized for its unstable framework, in which the isolated vehicles communicate with others only when the unexpected meetings occur. As a result, some available data dissemination schemes do not work well in VANETs....
In WSN-based surveillance systems power conservation is an important issue but one must also ensure that the application's objectives are met. In this paper, we jointly address the problem of coverage, disambigation and adaptive scheduling of sensor node's activity to extend the network lifetime while fulfilling a critical surveillance application needs. We first present a distributed algorithm that...
In wireless sensor networks, one of the main design challenges is to obtain long system lifetime, as well as maintain sufficient sensing coverage and reliability. In this paper, we propose a self-scheduling scheme based on RLVG, which can increase system lifetime under the condition of keeping sensing coverage. Our RLVG decide whether a sensor is a redundant node through dividing the sensing area...
Besides sensing the environment variables, the application of localization in wireless sensor networks has became an important research subject. Unlike the other range-free localization schemes which are not effective in real time performance, we propose a real time algorithm, which determines the location of the moving object based on dynamically changing signal strength. The simulation results demonstrated...
Wireless sensor networks (WSNs) developed for the monitoring of critical military or civilian infrastructures are expected to have long life cycle with ultra-low power consumption. An ultra-low power wireless sensing scheme is developed by exploiting the unique features of infrastructure monitoring systems, which usually have long latency tolerance, low data rate, and strong correlation among data...
A test-scale wireless chemical sensor network (WCSN) has been deployed within a controlled environmental chamber (EC). The combined signals from the WCSN were used to initiate a controllable response to the detected chemical event. When a particular sensor response pattern was obtained, a purging cycle was initiated. Sensor data were continuously checked against user-defined action limits, to determine...
In this paper novel distributed universal compaction algorithm for support of multipoint to point or point to point transmission in opposite direction is presented. Most of the energy needed for executing the algorithm is used in receiving (supportive) node, which is supposed to have plenty of energy for transmission. It generates appropriate (supportive) sequence, which is received by a supported...
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