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Source publication
This paper presents the integration of immerse D graphics contents as the representative of guidance information in real-time indoor environment. The designed system enables the tracking of nearby targets by utilizing the exact same system within the wireless sensor network sensing range. During the tour, union of 2D and D graphics provide even cle...
Contexts in source publication
Context 1
... (DMC) [33] is introduced to acquire target's up-to- date orientation view appertaining to which direction DMC currently point to. DMC supports the output in digital standard with compass heading indication; store the deviation-corrected signals of actual heading temporarily in the small memory. DMC is built upon three main parts as illustrated in Fig. 4(a). Foremost, magnetic field sensors are capable of receiving earth magnetic field data with accommodation of amplifier to exaggerate the sensors' sensitivity. Next, microcontroller analyzes and converts the sensors data into meaningful information. The size of DMC is 20mm X 20mm X 2.8mm and consumes little power in ...
Context 2
... spite of transmitting the orientation data to the mobile device, an external hardware device is required. Hence, a TIP710CM sensor node with IC circuits board design attached on it as a medium between the DMC and sensor node to transmit the orientation data (wireless, see Fig. 4(b)). In any respect, DMC suffers the same limitation found in other general magnetic compass ...
Citations
This paper focuses on the Zigbee-based Internet of Things (IoTs) in 3D terrains. A novel simulation model for IoT is proposed. The effects of various terrains, node's mobility and traffic loads are investigated in this study. Many comprehensive studies are shown by comparing the simulations results from the packet delivery ratio, network goodput, average end-to-end delay and energy consumption metrics in different operation modes and traffic loads.
A system with low-cost, low power consumption and wide range of ultrasonic positioning was designed. The node layout is the ultrasonic transmitter vertically installed on the top of the metal can as unknown node, the ultrasonic receivers as beacon nodes, 4 nodes installed on the ceiling and 4 nodes installed on the floor fixed position to receive ultrasonic. Ultrasonic sensor was designed with low power consumption microcontroller Ti MSP430F1611 and RF transceiver chip CC2420. Effective range is 10m, accuracy +/- 2cm, launch angle 360 degrees, the system power 200 similar to 400uA/MIPS, 5V lithium battery-powered, Zigbee wireless communication protocol for data transmission. A new algorithm of node location module and Matlab software simulation result were established to achieve 3D seamless positioning of metal can in 20m*2m*2m indoor space.
We describe a low-cost wearable system that tracks the location of individuals indoors using commonly available inertial navigation sensors fused with radio frequency identification (RFID) tags placed around the smart environment. While conventional pedestrian dead reckoning (PDR) calculated with an inertial measurement unit (IMU) is susceptible to sensor drift inaccuracies, the proposed wearable prototype fuses the drift-sensitive IMU with a RFID tag reader. Passive RFID tags placed throughout the smart-building then act as fiducial markers that update the physical locations of each user, thereby correcting positional errors and sensor inaccuracy. Experimental measurements taken for a 55 m × 20 m 2D floor space indicate an over 1200% improvement in average error rate of the proposed RFID-fused system over dead reckoning alone.
