Mano, Pitsini

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Mano, Pitsini
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Mano, P.
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pitsini.ma@kmitl.ac.th

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    Item type:Publication,
    Ballet Gesture Recognition and Evaluation System (Posé Ballet): Dynamic Improvement from Laboratory to Art Gallery
    (2023-01-01)
    Limmanee, Apirath
    ;
    Mano, Pitsini
    This paper elaborates the continual development of “Posé Ballet,” our ballet gesture recognition and evaluation system using MS Kinect camera. After the technical side of the system is explained, we describe our “design thinking” concepts. With these concepts, our new and improved third-version software as well as GUI are developed to serve the visitors at Bangkok Art and Culture Centre (BACC). We also mention previous versions of hardware, software, and GUI such that readers get a sense of how the system is continually developed and transformed in accordance with requirements from specific user groups. At the end, some results and feedback are collected. These give us insight on how to improve our system further toward the goal of being standardized or commercialized.
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    LVDT demodulator based on amplitude detector
    (2018-06-08)
    Petchmaneelumka, Wandee
    ;
    Mano, Pitsini
    ;
    Riewruja, Vanchai
    A circuit technique to demodulate a signal from a linear variable differential transducer (LVDT) is introduced in this paper. The proposed LVDT demodulator consists of the frequency doubler and the sample and hold circuit (SHC). The sum of two output signals of the LVDT is used as the reference signal instead of the excitation signal used in the traditional synchronous demodulators. The reference frequency is provided for the frequency doubler obtained by the phase-locked loop (PLL) to generate the control signal for the SHC. The frequency doubler generates the control signal for the SHC to sample the LVDT signal at the peak position. As a result, the output signal from the SHC is accurately achieved and linearly proportional to the moving core of the LVDT. The realization technique determines the LVDT signal at one-fourth period of the excitation signal. Therefore, the response time of the proposed circuit provides in a quarter of the excitation signal. The circuit configuration of the proposed scheme is simple and low cost. Performances of the proposed demodulator confirmed by experimental results are also included.
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    A versatile interface circuit for capacitive and resistive sensors
    (2017-12-13)
    Petchmaneelumka, Wandee
    ;
    Mano, Pitsini
    ;
    Wutikun, Tanatat
    ;
    Riewruja, Vanchai
    This paper presents a circuit design technique for realization of a versatile interface circuit for capacitive and resistive sensors. The proposed method is based on the use of operation of relaxation oscillator. Time periods generated from two relaxation oscillators are employed for the reference signal and another sensing signal from sensor. The output signal obtained in the form of time period is proportional to the sensing value from sensor. The proposed approach provides the attraction in terms of simple configuration and low cost. The proposed circuit performances confirmed by the experimental results using commercial devices are agreed with the expected values.