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This paper was mainly exploring the important tool for many people who were exchanging knowledge especially proceeding power-point presentation as one auxiliary tool. The lecturer's most proper position should be between the audience and screen of power-point and this location is far away the mouse or keyboard, so if we have designed one facility with wireless control and could be controlled with...
Recently, the Global Positioning System (GPS) has been adapted for use in many applications. However, the system suffers from blind spots where its electronic waves are unable at present, to penetrate such as the inside of buildings, underground garages, and tunnels. Consequently, further research to solve this problem is of some importance. This article suggests that, position-detection technology...
The article addresses combinatorial evolution of communication protocol for wireless sensor networks. Morphological tree structure (a version of and-or tree) is used as a hierarchical model for protocols. Three generations of protocol (ZigBee) are examined. A set of protocol change operations are generated and described. The change operations are used as items for forecasting based on combinatorial...
Wireless sensor network node as the most important member of the whole network, has some specious characteristics such as small size, low-power consumption, limited capacity of storage and communication and so on, the node design is essential. This paper proposes a wireless sensor network nodes design scheme based on 51 core MPU and the CC2420 RF transceiver chip, introduces the design process of...
According to the study of the quantitative analysis on the major hazards of the entity and virtual body in the mine production system, the early warning method of the mine safety production with the mixed-mode of the active and passive way is presented based on wireless sensor networks. In which, applying the ZigBee2007/PRO protocol stack, wireless sensor microcontroller technology and the GIS positioning...
Currently most existing remote controls for consumer electronics use infrared remotes (IR) technology to control devices which Increases the demand for advanced functionality that cannot be supported by existing IR. RF remotes provide new levels of interactivity and convenience for today's digital home when compared to IR remotes. New network protocols: ZigBee RF4CE are helping to make this technology...
Combining with the characteristics of intelligent transportation system and introduces wireless sensor networks technology. This paper illustrates a kind of intelligent transportation system solution of wireless sensor networks based on ZigBee technology. Through the comprehensive analysis of three respects of network topology, energy saving as well as being stable and reliable, this paper brings...
In this paper, we present the accuracy of location engine of CC2431 ZDK development kit which is widely used in sensor network localization problems. Initially, distance vs received signal strength indicator graph has been established, then accuracy of location engine and Cayley-Menger based localization algorithm have been compared. 11×11 meter area test result shows that location engine is more...
This paper is mainly to investigate the positioning technology. We use RFID and ZigBee to increase positioning accuracy in house or interior space. ZigBee technologies have low-cost, low power consumption, small size, easy to fabric construction, etc. Ideally, it suited for short-range wireless transmission of leaving. There are two-way communication is superlative for indoor positioning system. RFID...
Wireless sensor networks (WSNs) have the capacity to revolutionize data gathering in both spaceflight and terrestrial applications. WSNs provide a huge advantage over traditional, wired instrumentation since they do not require wiring trunks to connect sensors to a central hub. This allows for easy sensor installation in hard to reach locations, easy expansion of the number of sensors or sensing modalities,...
By using Wireless Sensor Networks information from the environment may collected by interactive manner and can make changes depending on this data where necessary. In this paper, living or object that allows the monitoring in a determined area is designed by using WSN. Localization techniques are depended on RSSI (Received Signal Strength Indicator) value and time synchronization is given on the designed...
This paper describes an on-line monitor system based on wireless sensor networks, which could test the ingredients of vehicles' off-gases, and also introduces the design of the hardware and software in details, and transplants the Zigbee protocol on the system at last. With the character of portability and the high precision gas sensors, the system could monitor the off-gases and distinguish the ingredients...
Zigbee is one of the most exciting wireless sensor network (WSN) technologies for monitoring and control. In our previous research, an integrated Zigbee RFID sensor network was designed as an `all-in-one' system solution for Humanitarian Logistics Center (HLC) resource management. Various field trials, which have justified the feasibility and features of such a system structure, have also revealed...
Sensor networks are deployed on various environments in order to collect sensing information in many cases. It is not easy to optimize program codes of all nodes due to the environmental variety of deployment of sensor networks. Therefore, commissioning procedure for each sensor node is required for optimized node programming. We suggest a new commissioning and deployment method for wireless sensor...
Many healthcare/medical services have started using personal area networks, such as Bluetooth and ZigBee; these networks consist of various types of vital sensors. These works focus on generalized functions for sensor networks that expect enough battery capacity and low-power CPU/RF (Radio Frequency) modules, but less attention to easy-to-use privacy protection. In this paper, we propose a commercially-deployable...
In this paper, a novel implantable bioimpedance monitor using a free ZigBee protocol for the transmission of the measured data is described. The application field is the tissue and organ monitoring through electrical impedance spectroscopy in the 100 Hz - 200 kHz range. The specific application is the study of the viability and evolution of engineered tissue in cardiac regeneration. Additionally to...
ZigBee focuses on low cost, low power and low data rate wireless communication market. It is embedded into consumer electronic devices, home and building automation device, industrial control equipment, PC peripheral, medical sensor and toys. CC2420 is a RF transceiver from Chipcon (now belong to TI) and LPC213X is a 32-bit MCU (ARM7TDMI-S) supporting real-time emulation from NXP. We used them to...
In this paper, The radio Frequency (RF) Monitoring and Measurement of the Environmental Research Institute (ERI) located in Cork city will be monitored and analyzed in both the Zigbee (2.44 GHz) and the industrial, scientific and medical (ISM 433 MHz). The main objective of this survey is to confirm what the noise and interferences threat signals exist in these bands. It was agreed that the surveys...
Object localization defines an important application for wireless sensor networks. In this paper, we present a hybrid of dual-modal mobile localization system to support the object tracking in indoor environment. In order to decrease the system cost and simplify the sensor deployment, we implement the localization by the received radio signal strength approach and the unscented Kalman filter (SPKF)...
We propose the sensor network where two different media of wireless communication and wire communication are used in a mutually. This sensor network, called mutually complementary multichannel sensor network (MMSN), can mutually complement the route in which communication is not possible via radio frequency or power lines. We defined the concept and architecture of MMSN. Recently, the amount of research...
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