Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Patent
1991-08-30
1992-11-10
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
By electrical or magnetic heat sensor
307310, 307491, 361 1, 434242, G01K 712
Patent
active
051618923
ABSTRACT:
Temperature measurement with thermocouples is made more accurate, and the cost of disposable thermocouples is reduced by locating the cold junction close to the hot junction, utilizing a thermistor in thermal communication with the cold junction in developing a compensating voltage which varies with temperature as does the voltage produced by the cold junction, and applying the compensating voltage to cancel the cold junction voltage. The presence of radio frequency fields in the region of the thermocouple is detected and utilization of the thermocouple voltage is interrupted in intervals when the interference is greater than some preselected intensity. Further, the thermocouple voltage information is utilized to simulate the resistance a thermistor would have at the temperature represented by the thermistor voltage information and that simulated resistance is applied to instrumentation designed to measure temperature with a thermistor.
REFERENCES:
patent: 2938385 (1960-05-01), Mack et al.
patent: 3069909 (1962-12-01), Hines
patent: 3413853 (1968-12-01), Rowell
patent: 3434349 (1969-03-01), Frischmann
patent: 3538771 (1970-11-01), Akeley
patent: 3580074 (1971-05-01), Wescott et al.
patent: 3582761 (1971-06-01), Hall, Jr.
patent: 3688580 (1972-09-01), Jarzembski
patent: 3842674 (1974-10-01), Wilbur et al.
patent: 3872727 (1975-03-01), Johnson
patent: 3906391 (1975-09-01), Murdock
patent: 3964314 (1976-06-01), Brixy
patent: 4023094 (1977-05-01), Adams
patent: 4087696 (1978-05-01), Bull
patent: 4133700 (1979-01-01), Hollander et al.
patent: 4157663 (1979-06-01), Ihlenfeldt et al.
patent: 4161880 (1979-07-01), Prosky
patent: 4253469 (1981-03-01), Asian
patent: 4365204 (1982-12-01), Haque
patent: 4435692 (1984-03-01), Miyamoto et al.
patent: 4446715 (1984-05-01), Bailey
patent: 4481596 (1984-11-01), Townzen
patent: 4482261 (1984-11-01), Dewey et al.
patent: 4588308 (1986-05-01), Saito
patent: 4669049 (1987-05-01), Kosednar et al.
patent: 4785250 (1988-11-01), Lawton
patent: 4857002 (1989-08-01), Jensen et al.
patent: 4863283 (1989-09-01), Falk
patent: 5088835 (1992-02-01), Shigezawa et al.
"Any Voltmeter Reads Electronic Thermometer" by Robert J. Battes, Electronics, Sep. 5, 1974.
"1989 Electronics for Measurement, Analysis, Computation," by Hewlett-Packard.
"Instantaneous-Frequency Meter Measures Biomedical Variables," by T. G. Barnett et al, Electronics, Aug. 30, 1979, p. 143.
"Voltage--Controlled Resistance Switches Over Preset Limits," by Chris Tocci, Electronics, Sep. 25, 1980, p. 133.
"RC Oscillator Linearizes Thermistor Output," by B. Sundqvist, Electronics Jan. 13, 1983, pp. 169 and 171.
"Dual-Function AMP Chip Simplifies Many Circuits," by Jim Williams, Electronics May 5, 1981, pp. 142-143-146.
"Mon-A-Therm Temperature Monitoring System Product Catalog," by Mon-A-Therm Inc.
"Monolithic CMOS-Switch IC Suits Diverse Applications," by Jim Williams EDN Oct. 4, 1984 pp. 183-192-194.
"Switched Capacitors Unlock Filters," EDN Apr. 3, 1986 pp. 142-143.
Beran Anthony V.
Shigezawa Gordon Y.
Respiratory Support Products Inc.
Yasich Daniel M.
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