Title:
TEMPERATURE MEASUREMENT AND CALIBRATION CIRCUIT, PASSIVE RADIO-FREQUENCY IDENTIFICATION TAG AND METHOD FOR MEASURING TEMPERATURE
Document Type and Number:
WIPO Patent Application WO/2014/044047
Kind Code:
A1
Abstract:
A temperature measurement and calibration circuit, a passive radio-frequency identification tag and a method for measuring temperature using same. The temperature measurement and calibration circuit for the tag generates an upper-limit reference voltage value and a lower-limit reference voltage value which are not changed with the temperature change, calibrates same to a uniform upper-limit voltage value and lower-limit voltage value, and eliminates the problem that the reference voltages are different due to the fact that each tag is affected by the fluctuation of the power source voltage and process variation. Meanwhile, a temperature measurement voltage generation circuit for the tag generates a calibration voltage value in the condition of a uniform calibration temperature. After translational calibration is performed on the calibration voltage value, the calibration voltage values of tags to be measured are made equal, thereby ensuring the uniformity of the measured temperature values of different tags, and being widely applied to the technical fields of ambient temperature detection, animal temperature detection, cold chain temperature detection, etc.
Inventors:
WU PATRICK BIAN (CN)
WANG XINGYI (CN)
ZHOU LINGLI (CN)
HAN FUQIANG (CN)
QI SHEHU (CN)
LUO YUANMING (CN)
WANG XINGYI (CN)
ZHOU LINGLI (CN)
HAN FUQIANG (CN)
QI SHEHU (CN)
LUO YUANMING (CN)
Application Number:
PCT/CN2013/073895
Publication Date:
March 27, 2014
Filing Date:
April 08, 2013
Export Citation:
Assignee:
EXCELIO TECHNOLOGY SHENZHEN CO LTD (CN)
WUXI EXCELIO TECHNOLOGY CO LTD (CN)
WUXI EXCELIO TECHNOLOGY CO LTD (CN)
International Classes:
G01K15/00
Foreign References:
| CN102840925A | 2012-12-26 | |||
| CN1789938A | 2006-06-21 | |||
| CN101019010A | 2007-08-15 | |||
| US8182139B2 | 2012-05-22 | |||
| CN101339079A | 2009-01-07 | |||
| US20070140308A1 | 2007-06-21 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE (CN)
深圳中一专利商标事务所 (CN)
深圳中一专利商标事务所 (CN)
Download PDF: