Patent ID: 11893434
Assignee: EXCELIO TECHNOLOGY (SHENZHEN) CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 3:
4. The circuit according to claim 3, wherein the command from the card reader includes:
the command for the regular operations unrelated to the temperature sensor and configured to control the RFID tag to perform tasks other than temperature measurement;
the command for starting the temperature sensor under the temperature sensor mode by activating the temperature measurement and A/D conversion circuit, wherein a modulation method and a coding method of the command allow a radio frequency receiver circuit and a demodulation circuit to obtain the information in the command sent by the card reader for starting measuring the temperature, such that the RFID tag enters the temperature sensor mode; and
an extended time radio frequency signal without modulated information including a stabilized amplitude and a smooth envelope for a period of time, wherein after being processed by the rectifier circuit and the regulator circuit, the extended time radio frequency signal fully charges the first energy storage capacitor and the second energy storage capacitor, such that more amount of energy is stored into the first energy storage capacitor and the second energy storage capacitor to satisfy the need for the high-precision temperature measurement and A/D conversion of the temperature sensor.