The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1992
Filed:
Oct. 21, 1991
Toshiro Hara, Hyogo, JP;
Masahiko Sayama, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The output of a water temperature sensor is converted into a voltage signal by a first set of resistors. The voltage signal is then converted into a digital signal, which is supplied to a microcomputer for various controls. If the first set of resistors is so set that the voltage change provides optimum representation of temperature variations in a low-temperature range, the measuring accuracy in a high-temperature range becomes degraded. To improve the accuracy in the high-temperature range, the signal from the water temperature sensor is converted into a voltage signal through a second set of resistors--which is optimumly adjusted for the high-temperature range--by turning on a transistor. Thus, the sensor signal-voltage conversion means can be switched between the two conversion characteristics according to whether the temperature being measured is in the low- or high-temperature range, thereby providing high measuring accuracy in a wide range of temperatures.