NDLI: Modulated scatterer microwave telemetry inside automobile engines and transmissions

Content Provider	IEEE Xplore Digital Library
Author	Campbell, R. Brumm, D. Taylor, T. Bock, B. Anderson, C. Barna, G.
Copyright Year	1994
Description	Author affiliation: Dept. of Electr. Eng., Michigan Technol. Univ., Houghton, MI, USA (Campbell, R.; Brumm, D.; Taylor, T.; Bock, B.)
Abstract	Measuring temperature and pressure inside automobile engines and transmissions poses a difficult set of problems. Since the measurement transducers are mounted on moving parts inside sealed housings, it is generally impossible to simply connect the transducers to the laboratory instrumentation with wires. We have had some success with infrared telemetry links for piston-mounted transducers with the infrared receiver mounted inside the engine crankcase, but optical scattering in the oil-covered engine is very low, so a short-direct path between the infrared LED and receiver is needed. Inside an automatic transmission there are no direct paths, so an alternative telemetry link that can propagate around corners must be used. Other constraints on the telemetry system are operation in a severe mechanical environment with high temperature, pressure and vibration; small size and weight so that the instrument package does not interfere with the operation of the engine or transmission; and long battery life, since the engine or transmission must be disassembled to change batteries. Our current telemetry systems use either low-powered FM transmitters or modulated scatterers operating between 2 and 3 GHz. Since the entire environment is electromagnetically enclosed, there is no potential for interference to or from other services operating at these frequencies.
Starting Page	1914
Ending Page	1917
File Size	182792
Page Count	4
File Format	PDF
ISBN	0780320093
DOI	10.1109/APS.1994.408163
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-06-20
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Telemetry Automobiles Engines Optical scattering Transducers Electromagnetic scattering Temperature Instruments Optical receivers Batteries
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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