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. 28, 2007
Filed:
Dec. 12, 2005
Andrew Cheng, Tao Yuan, TW;
Andrew Cheng, Tao Yuan, TW;
Signal Electronic Co., Ltd., Taipei, TW;
Abstract
The present invention relates to a pressure measuring apparatus, characterized in that: the pressure measuring apparatus comprises a pressure sensor having a first resistor for sensing an external stress and a second resistor acting as a reference, wherein the second resistor is acting as a reference while the first resistor is used for measuring an external stress in that a first oscillating signal received by an end of the first resistor is affected by the external stress, and consequently an affected first oscillating signal varied with respect to the external stress is outputted from the other end of the first resistor, and a second oscillating signal received by an end of the first resistor is outputted from another end of the second resistor without being affected by the external stress. Hence, the present invention provides a pressure measuring apparatus and a pressure sensor thereof using the frequency difference of the oscillating signal in accordance to the variation of the resistor value as base for measuring the external stress. Hence, the present invention requires no amplifier and A/D converter so that the whole manufacturing process is simplified and also the overall cost of the pressure measuring apparatus is reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile