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. 11, 2015
Filed:
Sep. 11, 2012
Qi-long Yu, Guangdong, CN;
Qi-Long Yu, Guangdong, CN;
Fu Tai Hua Industry (Shenzhen) Co., Ltd., Shenzhen, CN;
HON HAI PRECISION INDUSTRY CO., LTD., New Taipei, TW;
Abstract
A detection circuit includes an amplifier circuit, a rechargeable unit, a first comparator, a second comparator, a reference voltage providing circuit, a first resistor R, a second resistor R, and a processing unit. The amplifier circuit is connected to a bridge circuit sensor and amplifies signals output by the bridge circuit sensor to an output voltage Vo. The reference voltage providing circuit provides a reference voltage Vref. A charge current of the rechargeable unit is (Vref−V)/(R+R), and a discharge current is (Vref−VCC)/R. The processing unit controls the rechargeable unit to be charged for a time period Tand to be discharged during a time period T. The processing unit then calculates the output voltage Vo according to an equation: (Vref−V)×T/(R+R)=(Vref−VCC)×T/R, and obtains the signals according to the output voltage Vo.