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In order to meet the requirements of data fusion for greenhouse monitoring system based on wireless sensor network. A kind of multi-sensor data fusion structure model about spatial and temporal fusion is proposed. According to the greenhouse environment parameters such as temperature, humidity, CO2 change slowly, while the parameter of sunlight changes rapidly, this paper proposes that it respectively...
This paper presents the design and implementation of a wireless monitoring system for building smart room architectures in home environments. The proposed system consists of wireless sensor nodes and actuator nodes which are organized into a monitoring network by ZigBee protocols. A base station and some general wireless nodes have been developed to form a prototype system. Various sensor and actuator...
This paper presents the design and implementation of a novel reconfigurable mobile sensor network system for rough terrain. The proposed system is composed of modular robotic nodes that can be physically connected and disconnected to transform into various configurations. Therefore, they can adapt to changing terrain conditions in real-world applications. The nodes communicate with each other through...
Localization is one of the most challenging and important issues in wireless sensor networks (WSNs), especially if cost-effective approaches are demanded. Range estimation is essential in many sensor network localization algorithms. Although wireless sensor systems usually have available received signal strength indication (RSSI) reading, but RSSI is susceptible to external influences, performances...
The information is an effective approach to raise the level of plant management in modern enterprises. Aimed at the problem that most of the enterprises face wire-monitoring, so starting with the work in plant running management and adopting the technology of WSN, and analyzes deeply the based on wireless sensor network in plant running management. By collecting plants states signal in WSN, get monitoring...
Energy efficiency is one of the most important design metrics for wireless sensor networks. As sensor data always have redundancies, compression is introduced for energy savings. However, in some cases, it is unlikely to be wise to trade computation energy for communication savings. In this paper, a novel node-level compression arbitration mechanism is proposed, which is applied to improve compression...
A remote-controlled home automation system basing on the wireless sensor network, embedded system and GPRS was developed. This system allows the user to control the equipments in home, collect data about the appliance status and weather condition, and receive the alarm information of home intruder and fire through Chinese instant message of mobile service. The test result shows that the system can...
An integrated location algorithm using satellite location and wireless sensor networks (WSN) is put forward to solve the issues of seamless location both indoors and outdoors in a pervasive computing environment in this paper. Pseudorange observation data of global positioning system (GPS) and distance observation data of WSN are utilized to carry out positioning. Simulation results show that comparing...
Traditional global positioning system (GPS) is not suitable for indoor location environments. A wireless sensor network (WSN)-aided GPS location algorithm is put forward in this paper in order to realize seamless connection between indoor and outdoor locations and shorten search and acquisition time of GPS signal. The algorithm utilizes auxiliary location information obtained from GPS reference station...
The adaptive modulation and coding (AMC) schemes has long been adopted at physical layer to combat time-varying properties of the wireless channel. However, transmitting packet over deep fading channel can render extra energy expenditure, due to the incorporation of more error protection or usage of lower modulation mode, which is unaffordable for energy-limited wireless sensor device. To avoid such...
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