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:
Mar. 13, 2018
Filed:
Mar. 18, 2015
Excelio Technology (Shenzhen) Co., Ltd., Shenzhen (Guangdong Province), CN;
Wuxi Excel Technology Co., Ltd., Wuxi (Jiangsu Province), CN;
Patrick Bian Wu, Shenzhen, CN;
Xingyi Wang, Shenzhen, CN;
Lingli Zhou, Shenzhen, CN;
Fuqiang Han, Shenzhen, CN;
Shehu Qi, Shenzhen, CN;
Yuanming Luo, Shenzhen, CN;
Other;
Abstract
The present invention relates to the field of radio frequency identification, in particular to a temperature measurement and calibration circuit and a passive radio frequency identification tag. Meanwhile, the present invention further relates to a method for performing temperature measurement by using the tag. The temperature measurement and calibration circuit of the tag generates an upper reference voltage value limit and a lower reference voltage value limit, which do not change with temperature, then calibrates the upper reference voltage value limit and the lower reference voltage value limit to a uniform upper voltage value limit and a uniform lower voltage value limit, and eliminates the problem of different reference voltages of tags due to the power supply voltage fluctuation and process deviation. Meanwhile, a temperature measurement voltage generator circuit of the tag generates a calibration voltage value under a uniform calibration temperature. After the calibration voltage value is subjected to translational calibration, the calibration voltage values of the tags to be measured are equal, so that the consistency of temperature values of different tags is ensured. The circuit and tag provided by the present invention may be widely applied to ambient temperature detection, animal temperature detection, cold chain temperature detection or other fields, and have high accuracy of measurement.