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SIGMA XI - NJIT CHAPTER |
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"SENSOR INTERSECTION - A NEW PARADIGM"
Joshua Dayan, Ph.D.
Faculty of Mechanical Engineering, Technion Israel Institute of Technology
ABSTRACT
The difference in sensors' readings can be exploited to reveal phenomena other than the measured quantities. Two examples of extracting information beyond what is directly measured by these sensors are presented. The first example describes the identification of the environment in which an autonomous guided vehicle is moving, based on the difference between measurements from odometry and triangulation systems. The second example describes the detection of intermittent contact in flexibly mounted rotor mechanical face seal. High harmonic oscillations caused by the contact are detected through analysis of the difference in variance of the probes clearance readings. It is suggested that the process of deducting phenomena from the differences in sensors' measurements will be called "Sensor/Information Intersection", to be distinguished from "Sensor Association", or, "Sensor Fusion", in which the data are complementing each other and used to confirm the directly sensed quantity.
BIOGRAPHY Academic Degrees: B.Sc. 1961, and M. Sc. 1964, Technion, Haifa, Israel in and. Ph.D. 1967, Illinois Inst. of Tech., Chicago, IL. All degrees in Chemical Engineering. Dr. Dayan has been with the Faculty of Mechanical Engineering, Technion, Israel Institute of Technology, Haifa 32000, since 1971. Before joining the academia he has acquired industrial experience, mainly in the area of process control, in both Israel and the US. He has been consulting to various industries. At the Technion he is teaching mostly control courses and conducting research in process control, robotics and mechatronics (sensors and drivers). He has had about 40 graduate students. This year Dr. Dayan will join the team working on gasification, at the Dept. of Process and Systems Engineering at Cranfield University.
For information, contact Dr. Timothy Chang at (973)596-1906, or at changtn@njit.edu
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