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Internet of Things (IoT) for Smart Environments (SE) is a new scenario that collects useful information and provides convenient services to humans via sensing and wireless communications. Infra-Red (IR) motion sensors have recently been widely used for indoor lighting because they allow the system to detect whether a human is inside or outside the sensors’ range. In this paper, the performance of a position estimation scheme based on IR motion sensor is evaluated in an indoor SE. The experimental results show that we can track the dynamic position of a pedestrian in straight moving model as well as two dimensional models. Experimental results also show that higher performance in accuracy and dynamic tracking in real indoor environment can be achieved without other devices.
Changqiang Jing; Biao Zhou; Nammoon Kim; Youngok Kim. Performance Evaluation of an Indoor Positioning Scheme Using Infrared Motion Sensors. Information 2014, 5, 548 -557.
AMA StyleChangqiang Jing, Biao Zhou, Nammoon Kim, Youngok Kim. Performance Evaluation of an Indoor Positioning Scheme Using Infrared Motion Sensors. Information. 2014; 5 (4):548-557.
Chicago/Turabian StyleChangqiang Jing; Biao Zhou; Nammoon Kim; Youngok Kim. 2014. "Performance Evaluation of an Indoor Positioning Scheme Using Infrared Motion Sensors." Information 5, no. 4: 548-557.
In these days, the development of positioning technology for realizing ubiquitous environments has become one of the most important issues. The Global Positioning System (GPS) is a well-known positioning scheme, but it is not suitable for positioning in in-door/building environments because it is difficult to maintain line-of-sight condition between satellites and a GPS receiver. To such problem, various positioning methods such as RFID, WLAN, ZigBee, and Bluetooth have been developed for indoor positioning scheme. However, the majority of positioning schemes are focused on the two-dimension positioning even though three-dimension (3D) positioning information is more useful especially in indoor applications, such as smart space, U-health service, context aware service, etc. In this paper, a 3D positioning system based on mutually orthogonal nano-scale impulse radio ultra-wideband (IR-UWB) signals and cross array antenna is proposed. The proposed scheme uses nano-scale IR-UWB signals providing fine time resolution and high-resolution multiple signal specification algorithm for the time-of-arrival and the angle-of-arrival estimation. The performance is evaluated over various IEEE 802.15.4a channel models, and simulation results show the effectiveness of proposed scheme.
Nammoon Kim; Youngok Kim. 3D positioning scheme exploiting nano-scale IR-UWB orthogonal pulses. Nanoscale Research Letters 2011, 6, 544 -544.
AMA StyleNammoon Kim, Youngok Kim. 3D positioning scheme exploiting nano-scale IR-UWB orthogonal pulses. Nanoscale Research Letters. 2011; 6 (1):544-544.
Chicago/Turabian StyleNammoon Kim; Youngok Kim. 2011. "3D positioning scheme exploiting nano-scale IR-UWB orthogonal pulses." Nanoscale Research Letters 6, no. 1: 544-544.