High-precision temperature detection method and device

• Main Authors: FENG YUMING, WANG CONG, ZHANG LIANG, WANG JING, XU YIJUN, XIE YUHUA, PENG XINCHAO, YIN HUIPING
• Format: Patent
• Language: Chinese; English
• Published: 03.03.2020
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention discloses a high-precision temperature detection method and device. The high-precision temperature detection method and device are applied to a chip. The method comprises the following steps that: on the basis of a frequency proportional relation between a crystal oscillator clock and an RC clock in the chip, the current frequency of the RC clock in a current temperature environmentcan be obtained; and a first temperature value corresponding to the current frequency is determined based on pre-stored relationships between the corresponding temperature values and RC clock frequencies of the chip, and it is determined that the temperature value of the current temperature environment is the first temperature value. With the temperature detection method provided by the inventionadopted, the accuracy of the temperature detection of the chip is improved. 本发明公开了一种高精度温度检测方法及装置，应用于芯片中，所述方法包括：根据所述芯片中晶振时钟和RC时钟的频率比例关系获取当前温度环境下所述RC时钟的当前频率；基于预存的所述芯片对应的温度值与RC时钟频率的关系，确定所述当前频率对应的第一温度值，则确定所述当前温度环境的温度值为所述第一温度值。应用本发