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Saxena, M.
- Modelling and Simulation of Object Detection in Automotive Power Window
Abstract Views :134 |
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Authors
Affiliations
1 Department of Electronics, Instrumentation and Control Engineering University of Petroleum and Energy Studies, Dehradun-248001, Uttarakhand, IN
2 Centre of Information Technology, University of Petroleum and Energy Studies, Dehradun - 248001, Uttarakhand, IN
3 Department of Mechanical Engineering, University of Technology and Management, Shillong - 793001, Meghalaya, IN
1 Department of Electronics, Instrumentation and Control Engineering University of Petroleum and Energy Studies, Dehradun-248001, Uttarakhand, IN
2 Centre of Information Technology, University of Petroleum and Energy Studies, Dehradun - 248001, Uttarakhand, IN
3 Department of Mechanical Engineering, University of Technology and Management, Shillong - 793001, Meghalaya, IN
Source
Indian Journal of Science and Technology, Vol 9, No 43 (2016), Pagination:Abstract
The paper focuses on the system modelling of hardware based power window control system. In power window system, Direct Current (DC) motor served as the source of power to drive the power window frame and accordingly power window can be raised and lowered. In the paper, mathematical model of a DC motor controlled by an H bridge circuit and bridge is controlled through input switches which are available at driver and passenger door side. The main objective of power window control is to control the movement of glass door in upper and lower direction and this operation is controlled with the help of current sensor, fire sensor and position sensor in the replacement of manual control hand turned crank techniques for existing power windows. The driving component is DC motor that drives the power window using selflocking techniques for worm gear in the minimum ratio of 1:50 and output of worm gear goes to lead screw having pitch of 3mm to deliver linear movement to power window. The control unit of power window senses both high and low load obstructions. It is used to activate and deactivate the movement of the glass door in upward direction and downward direction with the help of DC motor, whenever, any hard and soft obstruction is detected. The automatic power window with intelligent control is designed and verified with several conditions that claim its movement in upward and downward direction. The simulation model is visualized in MATLAB/Simulink and performance is analysed with respect to current, voltage and speed measurement.Keywords
DC Motor, Intelligent Window Control System., Mathematical Modelling, Power Window.Full Text
- An Overview of AVIRIS-NG Airborne Hyperspectral Science Campaign Over India
Abstract Views :252 |
PDF Views:85
Authors
Bimal K. Bhattacharya
1,
Robert O. Green
2,
Sadasiva Rao
3,
M. Saxena
1,
Shweta Sharma
1,
K. Ajay Kumar
1,
P. Srinivasulu
3,
Shashikant Sharma
1,
D. Dhar
1,
S. Bandyopadhyay
4,
Shantanu Bhatwadekar
4,
Raj Kumar
1
Affiliations
1 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
2 Jet Propulsion Laboratory, California Institute of Technology, CA 91109, IN
3 National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 625, IN
4 Earth Observation Science Directorate, Indian Space Research Organisation, Bengaluru 560 231, IN
1 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, IN
2 Jet Propulsion Laboratory, California Institute of Technology, CA 91109, IN
3 National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 625, IN
4 Earth Observation Science Directorate, Indian Space Research Organisation, Bengaluru 560 231, IN
Source
Current Science, Vol 116, No 7 (2019), Pagination: 1082-1088Abstract
The first phase of an airborne science campaign has been carried out with the Airborne Visible/Infrared Imaging Spectrometer Next Generation (AVIRIS-NG) imaging spectrometer over 22,840 sq. km across 57 sites in India during 84 days from 16 December 2015 to 6 March 2016. This campaign was organized under the Indian Space Research Organisation (ISRO) and National Aeronautics and Space Administration (NASA) joint initiative for HYperSpectral Imaging (HYSI) programme. To support the campaign, synchronous field campaigns and ground measurements were also carried out over these sites spanning themes related to crop, soil, forest, geology, coastal, ocean, river water, snow, urban, etc. AVIRIS-NG measures the spectral range from 380 to 2510 nm at 5 nm sampling with a ground sampling distance ranging from 4 to 8 m and flight altitude of 4–8 km. On-board and ground-based calibration and processing were carried out to generate level 0 (L0) and level 1 (L1) products respectively. An atmospheric correction scheme has been developed to convert the measured radiances to surface reflectance (level 2). These spectroscopic signatures are intended to discriminate surface types and retrieve physical and compositional parameters for the study of terrestrial, aquatic and atmospheric properties. The results from this campaign will support a range of objectives, including demonstration of advanced applications for societal benefits, validation of models/techniques, development of state-of-the-art spectral libraries, testing and refinement of automated tools for users, and definition of requirements for future space-based missions that can provide this class of measurements routinely for a range of important applications.Keywords
Airborne Science Campaign, Hyperspectral Sensing, Imaging Spectrometer, Surface Reflectance.Full Text
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