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Paper proposes a kind of multiple environmental parameters monitoring system for granary that is based on ZigBee network and takes ARM controller as core. With regard to hardware, monitoring circuits for temperature, humidity, CO2 concentration and grain water content are designed. With regard to control program, fuzzy intelligent algorithm is designed and transplanted to ARM controller. The test...
In this paper, a Thermal Energy Harvesting (TEH) technique with power management circuit to condition the output power harvested from low-level heat energy sources with the intention to extend the lifetime of the wireless sensor network (WSN) node is presented. By using this approach, it can extends the WSN nodes lifespan from few days or even weeks (in a case of batteries powered) up to years or...
Living conditions in any country are important, especially a local environment is more important to many people. The parameters like a noise level, light intensity, barometric pressure, carbon monoxide (CO) and carbon dioxide (CO2) concentration levels are monitored to evaluate living conditions. The mentioned reasons led to the practical realization of Wireless Unit for Environmental Monitoring (WUEM)...
In this paper, we focus on two methods that can be used to increase the resilience of remotely-deployed and unattended IoT devices that must operate without direct human intervention. The methods include adaptive messaging rates for power-constrained devices where the most energy intensive process involves the transmission and reception of data via wireless means, and data caching and replay for extended...
This paper presents the wireless measurement of the incident pressure inside the fire ball of an air blast shock wave. The wireless sensor set-up and the experimental configuration are described. The wired and wireless experimental results are compared and analyzed. To our best knowledge, it is the first time that a wireless device takes place inside the fireball of an explosion for the measurement...
This letter presents a low-power miniaturized wireless sensor module, which can be reconfigured to interface with a variety of sensors as well as function as a receiver node. Measurements confirm that this circuit reads data from the sensors and transmits the information to a receiver through 50 m of air and 60 cm of fresh water with no packet loss.
In this study, a demonstration of a wireless system based on Bluetooth developed for real-time monitoring of greenhouse environment was presented. System was consisted of a host computer, a serial port adapter and five wireless units. In each wireless unit, a PIC16F876 microcontroller as main processor and a CB-SPA331 Bluetooth module for wireless communication were used. The wireless unit was designed...
The complexity of nodes in wireless sensor networks is an important variable that determines their size, cost, and functionality. When these factors are drastically minimized, new applications become possible in which nodes are not only truly ubiquitous in the environment, but also available in huge numbers. This article discusses concepts from neuroscience that will be useful in the miniaturization...
Wireless Sensor Networks (WSNs) are networks composed of a number of sensor nodes that communicate wirelessly. WSNs are utilized over a wide range of applications. This paper looks at the WSNs from the applications point of view. A survey of some of the key-applications that utilize WSN nowadays, along with their specifications and capabilities, is briefly presented.
This paper provides basic guidelines for deploying Wireless Sensor Networks (WSNs) in Agriculture, and more specifically in applications requiring crop monitoring. Firstly, it reviews the main components that existing WSN applications use, namely node platforms, operating systems (OSs), power supply, etc. Based on these data, a generic guide is proposed discussing basic considerations for deploying...
Recent advances in science and technology have led to facilitate monitoring the environment, collecting data, processing the sensed data, threshold-decision making process and lastly performing of suitable actions by using of distributed wireless sensor network and actor network. Wireless sensor actor network (WSAN) composed of a combination of at least one coordinator node with sensors and actor...
BAN(Body Area Network) has been researched widely in the world. The paper proposes the design of physiological information collection nodes based on wireless body area networks. This kind of node can not only collect blood oxygen and temperature but carry out wireless network transmission. The node adopts low energy consumption design. In order to save energy effectively, MSP 430 of TI Company is...
The development of a shear horizontal surface acoustic wave (SH-SAW) liquid sensor with identification (ID) for wireless applications is described. Moreover, a novel feature of "write capability" for this sensor is proposed. The SH-SAW passive sensor has a delay line configuration with a sensing area. The sensor is fabricated on a lithium tantalate (LiTaO3) substrate, which is Y-cut with...
The Center for Product Design and Manufacturing (CPDM) of University Malaya going to take part in the World Solar Challenge (WSC) 2009. It is a biannual solar powered car race over 3021 km from Darwin to Adelaide. The aim of this project is to build a system for monitoring performance of the solar vehicle during testing and race, a data acquisition and telemetry (DaqT) system is needed. In this project,...
In this paper, we consider that cooperative frequency spectrum sensing based on the spatial spectral estimation in cognitive radio sensor networks. We propose an algorithm that estimates the interference temperature of this model using a generalization of the DOA (direction of arrival) algorithm. From this, we find the interference temperature and show that it does become smaller. We compare our method...
To test and measure the field signal, the nodes of wireless measuring system are necessarily deployed in the signal source area. The nodes must cooperate with other nodes to sample the field signal at one same time, so the starting sampling action in the system needs one actuate time benchmark. Therefore a special approach based on wireless mode is proposed in this paper to provide the actuate time...
In this paper we study how to detect anomalies in a distributed manner by using wireless sensor networks (WSNs). We focus on a medical context, where existing works generally provide large environments to monitor patients using sensors as simple transducers. Those devices forward sensed health parameters to a main base station. This station collects received data and may perform some computations...
The paper presents a development of the multi sensor embedded system for measuring up to eight sensor parameters optimized by appropriate algorithms. Since most of the industrial applications use the analog sensors with transmitters for sensing the process parameters particularly in harsh environment because of their strong mechanical packaging and ruggedness. Then the benefits of digital technology...
This paper describes main features of IQRF wireless communication platform for home automation. This platform was developed and designed for home and industrial automation. Some basic functions of OS, development tools and basic modules are described. A case study is discussed at the end of the paper. This is a case study of a sensor network created around a core coordinator and a set of temperature...
According to disadvantages of conventional artificial monitor style or wire transmission monitor style, we adopt wireless communication network between field controllers and monitor central PC to design a distributed clinic medical intelligent physiological parameter data monitor system based on sensor technology, single chip microprocessor (SCM) technology, and visual instrument (VI) technology,...
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