Temperature detection device and temperature detection method

Abstract

The invention discloses a temperature detection device and a temperature detection method; wherein the temperature detection device is used for processing the acquired unsigned number to be convertedfor representing the temperature information through a first offset removal module, a second offset removal module, a deviation calculation module and a complementary code conversion module, the purpose of converting the unsigned number to be converted into the temperature information represented by the binary complementary code form of the information representing the real temperature is achieved, and considering that the conversion of the SAR-DAC has a linear error, the first offset removal module and the second offset removal module perform the offset removal twice for the unsigned number to be converted; and the unsigned number deviation correction value to be converted after two times of offset removal is determined through the deviation calculation module, so that the complement conversion module can eliminate the linear error in the complement conversion process, and accurate conversion from the unsigned number to be converted to the temperature information represented by the binary complement form is accurately carried out.

Description

technical field [0001] The present application relates to the technical field of temperature detection, and more specifically, to a temperature detection device and a temperature detection method. Background technique [0002] In the field of integrated circuit applications, it is usually necessary to detect the real-time temperature of the chip to feed back the real-time temperature of the chip to the user or adjust the temperature of the chip according to the real-time temperature of the chip so that the chip is in a good working state. [0003] In the prior art, when detecting the temperature of a chip, a SAR-ADC (Successive Approximation Register Analog-to-Digital Converter) is usually used to perform analog-to-digital conversion on the analog signal obtained by the temperature sensor. This is because in temperature detection application scenarios, there is usually no requirement for high speed and high precision. Therefore, it is a common practice to use a low-power SAR...

AI Technical Summary

Problems solved by technology

However, in the actual application process, it is found that because the parameter used to represent the temperature information output by the SAR-ADC is an unsigned number, if the unsigned number needs to be further displayed, the upper layer software needs to do additional decoding to convert the unsigned number The number is converted into a signed number, which is convenient for users to read or call by other applications, and the added decoding process makes the code of the upper layer software more complicated

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