Method and system to transmit signals being generated by a measu

Details Method and system to transmit signals being generated by a measu Method and system to transmit signals being generated by a measu

1987-09-29

1989-07-18

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

By a vibratory effect

331 66, 34087017, 374102, 374131, 374178, G04B 1720, H03K 1318

Patent

active

048489239

ABSTRACT:
Temperature measurement is effectively carried out by converting pulses derived from a pulse generator, in which the pulse gaps change as a result of a measured condition, for example temperature, by converting electrical pulses received from the pulse generator into light pulses, and then evaluating the light pulses with respect to a clock rate in a counter (22). The light pulses can readily be transmitted via a light pickup (9b) and fiber optic or the like (9a) to a remote evaluation unit. Preferably, the light is generated by a light emitting diode or a laser diode (8'), serially connected with a switching transistor (13') and energized upon receipt of a pulse from the pulse generator. The arrangement permits use of a piezoelectric element (2) such as a frequency determining quartz to control the frequency of an oscillator, the frequency of which is then converted into the pulses with the respective pulse gaps.

REFERENCES:
patent: 3384837 (1968-05-01), Toussaint et al.
patent: 3486023 (1969-12-01), McKeown
patent: 3860863 (1975-01-01), Lamprecht
patent: 4249418 (1981-10-01), Ebata
patent: 4518839 (1985-05-01), Taguchi et al.
patent: 4537515 (1985-08-01), Dinger et al.
R. Wenger, "Schaltungstechnik eines Temperaturmesssenders", Int'l Elektronische Rundschau, 1973, No. 3, pp. 70-71.
Aschmoneit, "Schwingkreis als Sensor", Elektronik, 1983, p. 30.
Cordes, "Messdaten drahtlos ubertragen", Elektronik 1983, pp. 70-71.
Israel, "Datenubertragung mit Lichtsignalen", Funkschau, pp. 64-69, Aug. 1986.

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