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Abundance of connected devices generate numerous data. Increased computing power of each device would enable themselves to train and generate device knowledge from collected data. In this paper, we propose a novel approach to transfer device knowledge between interoperable devices through structured data. This approach helps devices to use device knowledge from other device as input data. Reusing...
In this paper, we present a new beacon recognition method for wireless sensor devices to access beacon-enabled WSN with low-power consumption. At first, we explain necessity of the low-power beacon recognition in the beacon-enabled wireless sensor networks. By realigning network resources, we catch that beacons are in the same position in each BI (beacon interval). Then, we propose how to switch operation...
In this paper, we will introduce the necessity of real-time safety monitoring system for high-speed railway vehicle and propose a new type of safety monitoring system using a low-power wireless connection. To verify the proposed safety monitoring system is feasible, we measure the packet error rate on the moving train and show the analyzed results.
In this paper, the performance of an IEEE 802.15.4 based modem designed to monitor the state of underbody parts related to the security of high speed trains is investigated. Based on the intensive field tests, the optimum positions of transmitter and receiver within the high speed train are proposed. The validities of the proposed scheme is verified with packet error rate (PER) measured at the several...
Since information from GPS receivers is hardly understand by consumers, we propose an conversion application from raw location data to KML format file that can be applicable Google Maps. At first, we analyze geological data from GPS receivers and extract moving routes, time, and speed. Then we make a new KML file. Using placemark keyword, we represent all location data. Finally, we load the KML file...
A low-complexity frame synchronisation method for IEEE 802.15.4 systems is proposed. An autocorrelation function is utilised for reducing computational complexity for fine timing estimation instead of a cross-correlation function. To provide accurate estimation results, residual errors are compensated in the step of detecting start-of-frame delimiter symbols. The complexity of the proposed method...
In this paper, we propose a symbol detection method for ZigBee receiver. Main advantage of the proposed method is robustness under multi-path fading environments. The proposed method can be applied by correlation function of complex signals. It does not need equalization, as well as conventional demodulation and bit-level despreading. We simulate a symbol error probability performance to verify improved...
Radio frequency identification (RFID) is a technology that recognizes information and circumference environment from tags attached to objects via wireless technology, and provides various services such as location tacking, supply chain management. The mobile RFID technology which uses this RFID technology gives mobility to the RFID leader and makes it possible to exchange information between the users...
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