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A 2-D fiber Bragg grating (FBGs) accelerometer is proposed and experimentally demonstrated in this paper. The accelerometer is composed of a universal flexure hinge and two FBGs in which the FBGs are vertically attached on the surface of the hinge. The sensing characteristics of the accelerometer are analyzed theoretically. The theoretical analysis results show that the proposed device has a linear...
At present, a variety of instruments recording the articulation have its own pros and cons. None is able to record the data containing all the information of articulators. For example, ultrasound system can obtain main surface information of the tongue, but the images are noisy and cannot record tongue tip under some cases. While the EMA system can precisely record trajectory data of the key points...
The term "indoor" here refers generally to enclosed space partitioned into subspaces with connecting doors or gates. Examples include the inside of office buildings, amusement parks, and indoor shopping malls. In many applications, it is desirable to keep track of the distribution of people within the enclosed space. These applications range from smart house with automatically controlled...
Aiming at the attitude measurement based on MEMS (Micro Electromechanical Systems) inertial sensors, this article analyzes the limitations of traditional flight attitude estimate methods applied to MAV (Micro Aerial Vehicle) at first. Then, an extended Kalman filter (EKF) is deduced and constructed with the attitude matrix solving by MEMS gyroscope as the state update and the gravity vector solving...
Network reliability is very important in wireless body area network since the vital human life might be jeopardized, unless managed properly. In this article, a new modeling and analysis of node behaviors in wireless body area networks is presented for increasing reliability in the presence of multi-type failures, while saving energy. First, the nodes are classified into types with regard to their...
Wireless body area network is one of the most suitable technologies for building patient monitoring systems in hospitals, residential and work environment. The reliability of wireless body area networks is an important research issue since it may jeopardize the vital human life, unless managed properly. In this paper, a new modeling and analysis of in multi-type failures in a wireless body area networks...
This paper describes the flight control and navigation system of a fixed-wing unmanned aerial vehicle with low cost sensors. Furthermore, an adaptive Kalman filter algorithm with radial basic function neural network is proposed to improve attitude information performance. Based on the unmanned aerial vehicle situation information and error information, system adjusts the weights of the sensor information...
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