Method for temperature compensation of SAR sensor of terminal and terminal

Abstract

The embodiment of the present invention relates to the technical field of terminals, especially to a method for temperature compensation of an SAR (Specific Absorption Rate) sensor of a terminal and aterminal. The terminal comprises a temperature induction device, a processor and an SAR sensor; the temperature induction device is configured to send first triggering signals to the processor when it is detected that a temperature variable of the SAR sensor exceeds a preset value; the processor is configured to send first temperature control signals to the SAR sensor when the first triggering signals are received; and the SAR sensor is configured to start second-order temperature compensation of the SAR sensor according to the first temperature control signals, wherein the second-order temperature compensation and first-order temperature compensation of the SAR sensor commonly compensate base line data of the SAR sensor. Therefore, the method for temperature compensation of the SAR sensor of the terminal and the terminal can ensure the base data of the SAR sensor, can track the variable of the temperature in real time and can avoid the problem that the false triggering of the SAR sensor is caused by drastic changed temperature of the terminal.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of terminals, and in particular, to a method for performing temperature compensation on a SAR sensor of a terminal and a terminal. Background technique [0002] SAR (Specific Absorption Rate, electromagnetic wave absorption ratio), is the electromagnetic wave energy absorption ratio of mobile phones or wireless products. It is defined as: under the action of an external electromagnetic field, an induced electromagnetic field will be generated in the human body. Radiation is quantified and measured. With the development of mobile communications, handheld mobile terminals are getting closer to people's lives, and people use mobile terminals with increasing frequency and usage time, such as mobile phones and tablets. [0003] At present, the SAR sensor in the handheld terminal will introduce a temperature compensation mechanism to achieve a more accurate judgment mechanism. Even so, there...

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Problems solved by technology

[0003] At present, the SAR sensor in the handheld terminal will introduce a temperature compensation mechanism to achieve a more accurate judgment mechanism. Even so, there are still some problems of false triggering of the SAR sensor caused by inaccurate temperature compensation. In scenes that change rapidly, false triggering of some SAR sensors may occur, such as figure 1 As shown, it is an application scenario where the temperature changes rapidly. Since the parasitic capacitance is the minimum value during the period from t0 to t1, it can be judged that the human body is far away from t0 to t1, and it is detected at point t1 When the human body approaches, the change of the parasitic capacitance exceeds the preset threshold. After a long time of hand-holding from t1 to t2, the temperature of the hand-held terminal reaches about 37°C, and then the human hand leaves the terminal at time t2. At this time, The system should determine that the human body is far away, but because the temperature detection and compensation mechanism of the SAR sensor cannot quickly track the temperature change, the system only determines that the human body is far away at the time point t3. In fact, from the time t2 to t3, the system false trigger

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