Browsing by Author "Pat"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Development of ROS-based GUI for control of an autonomous surface vehicle
    (Institute of Electrical and Electronics Engineers Inc., 2017) Velamala, S.S.; Pat; , D.; Ming, X.
    Robot Operating System (ROS) and Qt are both powerful tools used in the field of robotics and Graphical User Interface (GUI) development. The combination of both these tools gives an advantage of creating a simple and easy to use yet powerful GUI for control of robots and autonomous vehicles. This paper introduces a simple tab based UI for control of the WAM-V (Wave Adaptive Modular Vehicle) Autonomous Surface Vehicle. The UI is aimed to allow for easy initialization and killing of processes as well as gather and view the vehicular data such as diagnostics, sensor information and live camera feed, all at one place. All communication and data transfer is done wirelessly over a local WiFi network. Manual control of the ASV can be done using the buttons or by specific commands entered via command line as arguments. © 2017 IEEE.
  • No Thumbnail Available
    Item
    Low power log-domain filter
    (Institute of Electrical and Electronics Engineers Inc., 2019) Pat; , A.; Muhammed, M.; Rao, H.G.; Rekha, S.
    This paper presents a second order low-pass filter employing the log-domain technique for low-voltage, low- power biomedical applications. The filter design is based on the dynamic translinear principle which exploits the non-linear current-voltage relationship of MOS transistors operating in sub- threshold region. The filter, designed in UMC 180 nm CMOS technology, operates with a 0.9 V supply voltage. It consumes a power of 45 nW for a cutoff frequency of 100 Hz. The dynamic range (DR) and figure of merit (FoM) of the filter are 55.6 dB and 61.3 fJ respectively. The DR and FoM of the filter is better than many designs found in the literature. © 2019 IEEE.