| Summary: | 博士 === 國立臺灣科技大學 === 電機工程系 === 105 === This dissertation presents a hybrid inertia measurement unit (IMU)/ gaze tracking indoor spatial localization system. The proposed system can be further combined with wireless switch control devices to control appliances independently at home for the subjects with high-level spinal cord injury or amyotrophic lateral sclerosis (ALS). When the subjects have dressed the head mounted hybrid IMU/ gaze tracking device, the indoor spatial coordinate of the subject's head can be calculated according to the IMU and gaze direction information for at least two gazed spatial markers with known spatial coordinates in the indoor environment. Once the indoor spatial coordinate of the subject's head is determined, the system is capable of recognizing the gazed appliance switch. When the subject is gazing at a specific switch, the system can obtain the indoor spatial gazing direction in terms of the IMU and gaze direction information from the proposed head mounted device. The obtained indoor spatial gazing direction is further mapped with all the spatial coordinates of the appliance switches in the room to find the currently gazing appliance switch. Finally, the appliance switch can be activated or deactivated in terms of blinking eyes. Practically, this work realized a head mounted hybrid IMU/ gaze tracking device and a wireless appliance switch module with Bluetooth connectivity. In addition, the graphical user interface application programs were also developed. The experiments were done in a 20 m2 room. The spatial positioning error of the switch is within 15 cm when the subject centrally gazed at the makers and switches, the error is within 25 cm when the subject did not centrally gaze at the makers and switches. Based on this investigation, the proposed system may works properly if the distance of two adjacent appliance switches can be kept 30 cm away.
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