WO2019196424A1 - 一种对终端的sar传感器进行温度补偿的方法及终端 - Google Patents

一种对终端的sar传感器进行温度补偿的方法及终端 Download PDF

Info

Publication number
WO2019196424A1
WO2019196424A1 PCT/CN2018/117988 CN2018117988W WO2019196424A1 WO 2019196424 A1 WO2019196424 A1 WO 2019196424A1 CN 2018117988 W CN2018117988 W CN 2018117988W WO 2019196424 A1 WO2019196424 A1 WO 2019196424A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
sar sensor
order
terminal
sensor
Prior art date
Application number
PCT/CN2018/117988
Other languages
English (en)
French (fr)
Inventor
李伟
Original Assignee
西安易朴通讯技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 西安易朴通讯技术有限公司 filed Critical 西安易朴通讯技术有限公司
Priority to DE112018007198.7T priority Critical patent/DE112018007198T5/de
Priority to US17/043,047 priority patent/US11366137B2/en
Publication of WO2019196424A1 publication Critical patent/WO2019196424A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/44—Modifications of instruments for temperature compensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
    • G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
    • G01S13/9094—Theoretical aspects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0878—Sensors; antennas; probes; detectors

Definitions

  • the present application relates to the field of terminal technologies, and in particular, to a method and a terminal for temperature compensation of a SAR sensor of a terminal.
  • SAR Specific Absorption Rate
  • SAR Specific Absorption Rate
  • the electromagnetic wave energy absorption ratio of mobile phones or wireless products It is defined as: In the external electromagnetic field, the electromagnetic field will be generated in the human body.
  • the international scientific community uses the "SAR" value to the mobile phone. Radiation is quantified and measured.
  • handheld mobile terminals are also closer to people's lives.
  • the frequency of people using mobile terminals is also increasing, and the use time is also increasing, for example, mobile phones, tablets, and the like.
  • the SAR sensor in the handheld terminal introduces a temperature compensation mechanism to achieve a more accurate judgment mechanism. Even so, there are still some problems caused by the erroneous triggering of the SAR sensor due to the inaccuracy of temperature compensation, at some temperatures. In the scene with relatively fast changes, some false triggers of SAR sensors will occur. As shown in Figure 1, it is a kind of application scenario with faster temperature change, because the parasitic capacitance is the smallest during the period from t0 to t1.
  • the value, therefore, can be judged from t0 to t1 is the state of the human body away from the state, the human body is detected close at the point t1, the parasitic capacitance change exceeds the preset threshold, and the hand is held for a long time from t1 to t2, The temperature of the handheld terminal reaches about 37 °C, and then the terminal 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 compensation mechanism of the SAR sensor cannot quickly track the temperature change, resulting in the time point of t3. The system determines that the human body is in a distant state. In fact, from the time t2 to t3, the system's judgment is false trigger.
  • the embodiment of the present invention provides a method and a terminal for performing temperature compensation on a SAR sensor of a terminal, so as to avoid false triggering of the SAR sensor in an application scenario where temperature changes are relatively fast.
  • an embodiment of the present application provides a terminal, including: a temperature sensing device, a processor, and a SAR sensor;
  • the temperature sensing device is electrically connected to the processor, and configured to send a first trigger signal to the processor when detecting that a temperature change amount of the SAR sensor exceeds a preset value;
  • the processor is electrically connected to the SAR sensor, and is configured to send a first temperature control signal to the SAR sensor when receiving the first trigger signal;
  • the SAR sensor is configured to start second-order temperature compensation of the SAR sensor according to the first temperature control signal, and the second-order temperature compensation compensates a baseline of the SAR sensor together with a first-order temperature compensation of the SAR sensor data.
  • the temperature sensing device includes a temperature sensor, a differential conversion circuit, and a comparator
  • the temperature sensor is configured to send the measured temperature to the differential conversion circuit
  • the differential conversion circuit is electrically connected to the temperature sensor for calculating a temperature change amount according to a temperature transmitted by the temperature sensor within a preset time length; and according to the temperature change amount and a preset thermoelectric conversion coefficient, Determining a trigger voltage and transmitting the trigger voltage to the comparator;
  • the comparator is electrically connected to the differential conversion circuit for comparing the trigger voltage with a preset voltage, and if the trigger voltage is greater than the preset voltage, sending the A trigger signal.
  • the comparator is further configured to send a second trigger signal to the processor when the trigger voltage is not greater than the preset voltage
  • the processor is further configured to: when receiving the second trigger signal, send a second temperature control signal to the SAR sensor;
  • the SAR sensor is further configured to stop the second-order temperature compensation according to the second temperature control signal, and the first-order temperature compensation function of the SAR sensor is used to compensate baseline data of the SAR sensor.
  • the temperature sensor is disposed around the SAR sensor.
  • T 0 normal temperature
  • T current temperature
  • f(T 0 ) the basic electromagnetic wave absorption ratio when temperature is T 0
  • s first-order compensation coefficient
  • V out trigger voltage
  • F proportional coefficient
  • r two Order compensation coefficient.
  • the differential conversion circuit is used according to a formula Determine the trigger voltage
  • K is a proportionality constant
  • ⁇ T is the amount of temperature change in the preset time period t
  • V out is the trigger voltage
  • the SAR sensor is electrically connected to an antenna of the terminal, and is configured to receive a parasitic capacitance detected by the antenna;
  • the SAR sensor is further configured to determine that the human body is close to the terminal when the difference between the parasitic capacitance and the baseline data is greater than a preset threshold; otherwise, determine that the human body is away from the terminal.
  • the embodiment of the present application further provides a method for performing temperature compensation on a SAR sensor of a terminal, including:
  • the first temperature control signal is used to instruct the SAR sensor to initiate second-order temperature compensation, and the second-order temperature compensation and the SAR sensor
  • the first order temperature compensation compensates for the baseline data of the SAR sensor.
  • the method further includes:
  • T 0 normal temperature
  • T current temperature
  • f(T 0 ) the basic electromagnetic wave absorption ratio when temperature is T 0
  • s first-order compensation coefficient
  • V out trigger voltage
  • F proportional coefficient
  • r two Order compensation coefficient.
  • the temperature sensing device includes a temperature sensor, a differential conversion circuit, and a comparator, and before receiving the first trigger signal sent by the temperature sensing device, the method further includes:
  • the differential conversion circuit receives the temperature measured by the temperature sensor, and calculates a temperature change amount according to the temperature transmitted by the temperature sensor within a preset time length; and according to the temperature change amount and the preset thermoelectric conversion coefficient, Determining a trigger voltage, and transmitting the trigger voltage to the comparator, so that the comparator compares the trigger voltage with a preset voltage, and sends when the trigger voltage is greater than the preset voltage The first trigger signal.
  • the method further includes: the SAR sensor receives a parasitic capacitance detected by an antenna of the terminal, and a difference between the parasitic capacitance and the baseline data is greater than a pre- When the threshold is set, it is determined that the human body is close to the terminal, otherwise, it is determined that the human body is away from the terminal.
  • an embodiment of the present application provides a terminal, including: a memory and a processor; wherein:
  • a memory for storing program instructions
  • a processor configured to invoke program instructions stored in the memory, and perform the method in any of the possible implementations of the second aspect or the second aspect according to the obtained program.
  • an embodiment of the present application provides a computer storage medium, where the computer readable storage medium stores computer executable instructions, where the computer executable instructions are used to cause the computer to perform the second aspect or the second aspect.
  • an embodiment of the present application provides a computer program product, where the computer program product includes a computing program stored on a computer readable storage medium, the computer program includes program instructions, when the program instructions are executed by a computer The computer is caused to perform the method as in any of the possible implementations of the second aspect or the second aspect.
  • the terminal includes: a temperature sensing device, a processor, and a SAR sensor; the temperature sensing device is electrically connected to the processor, and is configured to detect that a temperature variation of the SAR sensor exceeds a preset value Sending a first trigger signal to the processor; the processor is electrically connected to the SAR sensor, and configured to send a first temperature control signal to the SAR sensor when receiving the first trigger signal.
  • the SAR sensor is configured to start second-order temperature compensation of the SAR sensor according to the first temperature control signal, the second-order temperature compensation co-compensating with the first-order temperature compensation of the SAR sensor to compensate the SAR sensor Baseline data.
  • the first trigger signal is sent to the processor, and after receiving the first trigger signal, the processor sends the first temperature control signal to the SAR sensor, and then the SAR sensor
  • the second-order temperature compensation of the SAR sensor is started according to the first temperature control signal, that is, the second-order temperature compensation and the first-order temperature compensation of the SAR sensor compensate the baseline data of the SAR sensor, and therefore, in some application scenarios where the temperature change is relatively fast,
  • the second-order temperature compensation and the first-order temperature compensation of the SAR sensor compensate the baseline data of the SAR sensor, so that the baseline data of the SAR sensor can track the temperature change in real time, avoiding the terminal because the temperature is low to high or high.
  • the erroneous triggering problem of the SAR sensor if the temperature change does not exceed the preset value, does not trigger the second-order temperature compensation, or the first-order temperature compensation of the SAR sensor is used for the SAR sensor.
  • the baseline data is compensated, so it can guarantee that the terminal will not be out in various temperature changes. The problem of false triggering of SAR sensors.
  • the method for temperature compensation of the SAR sensor of the terminal includes: receiving a first trigger signal sent by the temperature sensing device, wherein the first trigger signal is that the temperature sensing device detects the temperature of the SAR sensor And generating, when the amount of change exceeds a preset value, sending a first temperature control signal to the SAR sensor according to the first trigger signal, where the first temperature control signal is used to instruct the SAR sensor to initiate second-order temperature compensation
  • the second-order temperature compensation cooperates with the first-order temperature compensation of the SAR sensor to compensate baseline data of the SAR sensor.
  • the first trigger signal is sent to the processor, and after receiving the first trigger signal, the processor sends the first temperature control signal to the SAR sensor, and then the SAR sensor
  • the second-order temperature compensation of the SAR sensor is started according to the first temperature control signal, that is, the second-order temperature compensation and the first-order temperature compensation of the SAR sensor compensate the baseline data of the SAR sensor, and therefore, in some application scenarios where the temperature change is relatively fast,
  • the second-order temperature compensation and the first-order temperature compensation of the SAR sensor compensate the baseline data of the SAR sensor, so that the baseline data of the SAR sensor can track the temperature change in real time, avoiding the terminal because the temperature is low to high or high.
  • the erroneous triggering problem of the SAR sensor if the temperature change does not exceed the preset value, does not trigger the second-order temperature compensation, or the first-order temperature compensation of the SAR sensor is used for the SAR sensor.
  • the baseline data is compensated, so it can guarantee that the terminal will not be out in various temperature changes. SAR sensor error problem triggered.
  • FIG. 1 is a schematic diagram of an application scenario in which a temperature change is relatively fast according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a terminal and an antenna connected according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of a method for temperature compensation of a SAR sensor of a terminal according to an embodiment of the present application.
  • FIG. 2 exemplarily shows a schematic structural diagram of a terminal provided by an embodiment of the present application.
  • the terminal may include: a temperature sensing device 1 , a processor 2 , and a SAR sensor 3 . among them:
  • the temperature sensing device 1 is electrically connected to the processor 2 for transmitting a first trigger signal to the processor 2 when detecting that the temperature change amount of the SAR sensor 3 exceeds a preset value.
  • the processor 2 is electrically connected to the SAR sensor 3 for transmitting a first temperature control signal to the SAR sensor when receiving the first trigger signal.
  • the SAR sensor 3 is configured to activate the second-order temperature compensation of the SAR sensor 3 according to the first temperature control signal, and the second-order temperature compensation cooperates with the first-order temperature compensation of the SAR sensor 3 to compensate the baseline data of the SAR sensor 3.
  • the temperature sensing device 1 may include a temperature sensor 11, a differential conversion circuit 12, and a comparator 13. among them:
  • the temperature sensor 11 is for transmitting the measured temperature to the differential conversion circuit 12.
  • the differential conversion circuit 12 is electrically connected to the temperature sensor 11 for calculating the temperature change amount according to the temperature transmitted by the temperature sensor within a preset time length; and determining the trigger voltage according to the temperature change amount and the preset hot spot conversion coefficient, and The trigger voltage is sent to the comparator 13.
  • the comparator 13 is electrically connected to the differential conversion circuit 12 for comparing the trigger voltage with the preset voltage. If the trigger voltage is greater than the preset voltage, the first trigger signal is sent to the processor 2. For example, the comparator can send a low level to one of the chip pins of the processor for indicating that the first trigger signal is sent to the processor. Of course, in a specific implementation, the comparator can also be one of the processors. The chip pin sends a high level to indicate that the first trigger signal is sent to the processor.
  • the temperature sensor 11 can be placed around the SAR sensor 3, and the temperature sensor 11 is as close as possible to the SAR sensor 3.
  • the temperature sensor 11 can be a thermistor or other types of thermal modules for monitoring the temperature of the SAR sensor 3 in real time.
  • the preset value may be set according to experience, for example, according to different SAR sensors, the actual effect of the temperature compensation is defined. For example, when the first-order temperature compensation effect of the SAR sensor is better, the preset value may be used. The setting is larger. Conversely, when the first-order temperature compensation effect of the SAR sensor is not very good, the preset value can be set smaller and compensated by the second-order temperature compensation.
  • the differential conversion circuit 12 calculates the temperature change amount based on the temperature transmitted by the temperature sensor 11 within the preset time length.
  • the preset time length is 1 minute, assuming that the temperature sensor 11 measures 10 ° C at 14:48 on March 20, 2018, and the temperature measured at 14:49 on March 20, 2018 is 12 °C, the temperature change is 2, the preset time length is 1.
  • the differential conversion circuit 12 determines the trigger voltage based on the amount of temperature change and the preset hot spot conversion coefficient.
  • the differential conversion circuit 12 can determine the trigger voltage according to the following formula.
  • K is a proportional constant
  • ⁇ T is the amount of temperature change in the preset time period t
  • V out is the trigger voltage.
  • the detection of the temperature change amount is realized by the differential conversion circuit 12, and the greater the temperature change is, the greater the value of the trigger voltage is in the preset time period, and vice versa.
  • the time period the less the temperature change is, the smaller the value of the trigger voltage is. Even in the limit case, the value of the trigger voltage is zero when the temperature does not change within a preset period of time.
  • the trigger voltage may be sent to the comparator 13, and the comparator 13 compares the trigger power with the preset voltage, when the trigger voltage is greater than the preset voltage.
  • the first trigger signal may be sent to the processor 2, and after receiving the first trigger signal, the processor 2 may send a first temperature control signal to the SAR sensor 3, and after receiving the first temperature control signal, the SAR sensor 3 may The second order temperature compensation of the SAR sensor 3 is activated.
  • the second trigger signal may be sent to the processor, that is, when the trigger voltage is less than or equal to the preset voltage, the second trigger signal may be sent to the processor 2, and the processor 2 receives the first trigger signal.
  • the second temperature control signal is sent to the SAR sensor 3.
  • the SAR sensor 3 can stop the second-order temperature compensation and perform only the first-order temperature compensation on the SAR sensor.
  • the preset voltage is a preset voltage that can be set according to different application scenarios by a software program to adjust the amplitude of the preset voltage.
  • the SAR sensor 3 may perform first-order temperature compensation according to the following formula 2 and perform second-order temperature compensation according to the following formula 3 and the following formula 4; the SAR sensor 3 receives the second temperature.
  • the first-order temperature compensation can be performed according to the following formula 2.
  • T 0 is the normal temperature
  • T is the current temperature
  • f(T 0 ) is the basic electromagnetic wave absorption ratio when the temperature is T 0
  • s is the first-order compensation coefficient
  • V out is the trigger voltage
  • F is the proportional coefficient, which can be based on the actual The test data can be debugged and changed
  • r is the second-order compensation coefficient.
  • the second-order compensation increases the second small amount on the basis of the first-order compensation, and the temperature change does not cause the trigger voltage to be greater than the preset voltage.
  • the second small amount can be neglected, and when the temperature change causes the trigger voltage to be greater than the preset voltage, the second small amount can not be ignored.
  • the second-order temperature compensation can be started, that is, the second order is adopted. Temperature compensation and first-order temperature compensation compensate for the baseline data of the SAR sensor.
  • the SAR sensor can also be connected to the antenna through an isolation module (large inductance in series or other, not limited), or by using an antenna of a separate SAR sensor.
  • an isolation module large inductance in series or other, not limited
  • a separate antenna may be disposed in the terminal for detecting parasitic capacitance, and after detecting the parasitic capacitance, the antenna transmits the detected parasitic capacitance to the SAR sensor, and then the terminal receives the parasitic according to the SAR sensor.
  • the difference between the capacitance and the baseline data of the SAR sensor determines whether the human body is close to the terminal or away from the terminal.
  • the difference between the parasitic capacitance and the SAR sensor is greater than a preset threshold, it is determined that the human body is close to the terminal, and when the difference between the parasitic capacitance and the SAR sensor is less than a preset threshold, then determining Keep the human body away from the terminal.
  • the SAR sensor 3 can also be connected to the antenna of the terminal for receiving the parasitic capacitance detected by the antenna.
  • the SAR sensor of terminal 100 can be coupled to the lower antenna 101 and upper antenna 102 of the terminal for receiving the parasitic capacitance detected by the antenna, see FIG.
  • the SAR sensor 3 may determine that the human body is close to the terminal 100 according to the difference between the parasitic capacitance and the baseline data, otherwise, the human body is determined to be away from the terminal. 100.
  • the antenna of the terminal After detecting the parasitic capacitance, the antenna of the terminal compares the parasitic capacitance with the baseline data written in the storage area, and judges whether the human body is close to the terminal or away from the terminal according to the difference, and due to parasitic capacitance It can't be controlled when the temperature changes drastically. Therefore, by compensating the baseline data of the SAR sensor, the influence of temperature on the difference between the parasitic capacitance and the baseline data can be reduced, so that the human body can be more accurately judged or not. keep away.
  • the curve a in Fig. 4 is the response curve of the baseline data which has undergone only the second-order temperature compensation and has undergone only the first-order temperature compensation
  • the curve b is the synthesis which has undergone both the second-order temperature compensation and the first-order temperature compensation. curve. It can be seen from Fig. 4 that in the case of rapid temperature change, the time for tracking the baseline data only by the first-order temperature compensation is t 1 -t 4 , and the baseline compensated by the first-order temperature compensation and the second-order temperature compensation is compensated. The time of the data is t 2 -t 3 , and it can be seen from the figure that the time from t 2 to t 3 is also very short.
  • the terminal uses the first-order temperature compensation and the second-order temperature common.
  • the compensation scheme can save t 1 -t 2 and save the determination time of t 3 -t 4 compared to the scheme using only the first-order temperature compensation, which can effectively shorten the change of baseline data after rapid temperature change. Time, in this way, it can be judged more accurately to determine whether the terminal is far away.
  • the first trigger limit signal is sent to the processor, and after receiving the first trigger signal, the processor sends the first temperature control signal to the SAR sensor.
  • the SAR sensor activates the second-order temperature compensation of the SAR sensor according to the first temperature control signal, that is, the second-order temperature compensation and the first-order temperature compensation of the SAR sensor compensate the baseline data of the SAR sensor, and therefore, some temperature changes are relatively fast.
  • the second-order temperature compensation is used together with the first-order temperature compensation of the SAR sensor to compensate the baseline data of the SAR sensor, so as to ensure that the baseline data of the SAR sensor can track the temperature change in real time, and avoid the terminal because the temperature is from low to high.
  • the erroneous triggering problem of the SAR sensor caused by the violent change from high to low. If the temperature change does not exceed the preset value, it will not trigger the second-order temperature compensation, or the first-order temperature of the SAR sensor. Compensation compensates the baseline data of the SAR sensor, thus ensuring the field of the terminal at various temperature changes Problem does not appear SAR sensor false triggering, and so can also reduce resource scheduling and power terminals.
  • the embodiment of the present application further provides a method for temperature compensation of a SAR sensor of a terminal, which is applied to a terminal including a processor, a temperature sensing device, and a SAR sensor.
  • the method can be include:
  • S501 Receive a first trigger signal sent by the temperature sensing device, where the first trigger signal is generated when the temperature sensing device detects that the temperature variation of the SAR sensor exceeds a preset value.
  • S502 Send a first temperature control signal to the SAR sensor according to the first trigger signal, where the first temperature control signal is used to instruct the SAR sensor to initiate second-order temperature compensation, and the second-order temperature compensation and the first-order temperature of the SAR sensor Compensation compensates for baseline data for SAR sensors.
  • the second trigger signal sent by the temperature sensing device may also be received.
  • the second trigger signal is generated when the temperature sensing device detects that the temperature change amount does not exceed the preset value; and then sends a second temperature control to the SAR sensor according to the second trigger signal a signal, the second temperature control signal is used to instruct the SAR sensor to stop the second-order temperature compensation function, and the first-order temperature compensation function is used to compensate baseline data of the SAR sensor.
  • the first-order temperature compensation may be performed according to the above formula 2
  • the second-order temperature compensation may be performed according to the above formula 3 and formula 4.
  • the temperature sensing device includes a temperature sensor, a differential conversion circuit, and a comparator, and before receiving the first trigger signal sent by the temperature sensing device, the method further includes:
  • the differential conversion circuit receives the temperature measured by the temperature sensor, and calculates a temperature change amount according to the temperature transmitted by the temperature sensor within a preset time length; and according to the temperature change amount and the preset thermoelectric conversion coefficient, Determining a trigger voltage, and transmitting the trigger voltage to the comparator, so that the comparator compares the trigger voltage with a preset voltage, and sends when the trigger voltage is greater than the preset voltage The first trigger signal.
  • the method further includes:
  • the foregoing embodiment provides a method for charging a temperature of a SAR sensor of a terminal and a terminal for transmitting a first trigger limit number to the processor when the temperature change exceeds a preset value, and the processor
  • the first temperature control signal is sent to the SAR sensor, and then the SAR sensor starts the second-order temperature compensation of the SAR sensor according to the first temperature control signal, that is, the second-order temperature compensation and the first order of the SAR sensor
  • Temperature compensation compensates for the baseline data of the SAR sensor. Therefore, in some applications where the temperature changes rapidly, the second-order temperature compensation and the first-order temperature compensation of the SAR sensor compensate the baseline data of the SAR sensor to ensure the baseline of the SAR sensor.
  • the data can track the change of temperature in real time, avoiding the problem of false triggering of the SAR sensor caused by the terminal changing rapidly from low to high or high to low, if the temperature change does not exceed the preset value. , does not trigger second-order temperature compensation, or use the first-order temperature compensation of SAR sensor for the base of SAR sensor
  • the line data is compensated. Therefore, it can ensure that the terminal does not have the problem of false triggering of the SAR sensor under various temperature change scenarios, and thus the resource scheduling and power consumption of the terminal can be reduced.
  • the embodiment of the present application provides another terminal, which can be used to perform the foregoing method for temperature compensation of a SAR sensor of a terminal.
  • a memory may also be included, and the memory and the processor may communicate via a bus.
  • the memory is used to store programs.
  • the program can include program code, the program code including computer operating instructions.
  • the memory may be a volatile memory, such as a random-access memory (RAM), or a non-volatile memory, such as a flash memory.
  • RAM random-access memory
  • non-volatile memory such as a flash memory.
  • HDD hard disk drive
  • SSD solid-state drive
  • the processor may be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and an NP. It can also be a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination.
  • a memory for storing program instructions
  • a processor configured to invoke a program instruction stored in the memory, and perform the above method for temperature compensation of the SAR sensor of the terminal according to the obtained program.
  • the embodiment of the present application further provides a computer storage medium for storing computer program instructions for use in the above computing device, comprising a program for performing the above method for temperature compensation of a SAR sensor of the terminal.
  • the computer storage medium can be any available media or data storage device accessible by a computer, including but not limited to magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD) , BD, HVD, etc.), and semiconductor memories (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)).
  • magnetic storage eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage eg, CD, DVD
  • BD magneto-optical disk
  • HVD etc.
  • semiconductor memories such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)).
  • embodiments of the present application can be provided as a method, system, or computer program product. Therefore, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, embodiments of the present application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.

Abstract

一种对终端的SAR传感器（3）进行温度补偿的方法及终端，该终端包括：温度感应装置（1）、处理器（2）及SAR传感器（3）；温度感应装置（1），用于在检测到SAR传感器（3）的温度变化量超过预设值时，向处理器（2）发送第一触发信号；处理器（2），用于在接收到第一触发信号时，向SAR传感器（3）发送第一温控信号；SAR传感器（3），用于根据第一温控信号启动SAR传感器（3）的二阶温度补偿，二阶温度补偿与SAR传感器（3）的一阶温度补偿共同补偿SAR传感器（3）的基线数据。由此，能够保证SAR传感器（3）的基线数据实时的跟踪温度的变化量，可以避免终端因为温度剧烈变化引起的SAR传感器（3）的误触发问题。

Description

一种对终端的SAR传感器进行温度补偿的方法及终端
本申请要求在2018年04月10日提交中华人民共和国知识产权局、申请号为201810315697.X，发明名称为“一种对终端的SAR传感器进行温度补偿的方法及终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及终端技术领域，尤其涉及一种对终端的SAR传感器进行温度补偿的方法及终端。
背景技术
SAR(Specific Absorption Rate，电磁波吸收比率)，是手机或无线产品之电磁波能量吸收比值，其定义为：在外电磁场的作用下，人体内将产生感应电磁场，国际科学界用“SAR”值来对手机辐射进行量化和测量。随着移动通讯的发展，手持移动终端也更加贴近人们的生活，人们使用移动终端的频率也不断提高，使用时间也增长，例如，手机、平板等。
目前，手持终端的中的SAR传感器都会引入温度补偿的机制，以实现比较精准的判断机制，即使如此，依然存在一些因为温度补偿的不精确导致的SAR传感器误触发的问题的发生，在一些温度变化比较快速的场景，就会出现一些SAR传感器的误触发的发生，如图1所示，就是一种温度变化较快的应用场景，由于在t0到t1这段时间内，寄生电容量为最小值，因此，可判断出从t0到t1是人体远离的状态，在t1点检测到人体靠近，寄生电容量的变化量超过了预设的门限，经过人手的从t1到t2的长时间手持，手持终端的温度达到37℃左右，然后在t2时间点人手离开终端，此时，系统应该判定为人体远离，但是因为SAR传感器的温度检测补偿机制不能快速跟踪温度的变化，导致在t3的时间点，系统才判定为人体处于远离状态，事实上，从t2到t3 的时间，系统的判定就是误触发。
因此，在一些温度变化比较快的应用场景，如何避免终端的SAR传感器的误触发成了亟待解决的技术问题。
发明内容
本申请实施例提供一种对终端的SAR传感器进行温度补偿的方法及终端，用以实现在一些温度变化比较快的应用场景中，避免SAR传感器的误触发。
第一方面，本申请实施例提供一种终端，包括：温度感应装置、处理器及SAR传感器；
所述温度感应装置，与所述处理器电连接，用于在检测到SAR传感器的温度变化量超过预设值时，向所述处理器发送第一触发信号；
所述处理器，与所述SAR传感器电连接，用于在接收到所述第一触发信号时，向所述SAR传感器发送第一温控信号；
所述SAR传感器，用于根据所述第一温控信号启动所述SAR传感器的二阶温度补偿，所述二阶温度补偿与所述SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据。
一种可能的实现方式中，所述温度感应装置包括温度传感器、微分转换电路及比较器；
所述温度传感器，用于将测量到的温度发送给所述微分转换电路；
所述微分转换电路，与所述温度传感器电连接，用于根据预设时间长度内所述温度传感器所传送的温度，计算温度变化量；并根据所述温度变化量以及预设热电转换系数，确定触发电压，并将所述触发电压发送给所述比较器；
所述比较器，与所述微分转换电路电连接，用于将所述触发电压与预设电压进行比较，若所述触发电压大于所述预设电压，则向所述处理器发送所述第一触发信号。
一种可能的实现方式中，所述比较器，还用于在所述触发电压不大于所述预设电压时，向所述处理器发送第二触发信号；
所述处理器，还用于在接收到所述第二触发信号时，向所述SAR传感器发送第二温控信号；
所述SAR传感器，还用于根据所述第二温控信号停止所述二阶温度补偿，所述SAR传感器的一阶温度补偿功能用于补偿所述SAR传感器的基线数据。
一种可能的实现方式中，所述温度传感器设置于所述SAR传感器周边。
一种可能的实现方式中，所述SAR传感器，用于根据公式f(T)＝f(T 0)+s(T-T 0)进行一阶温度补偿；
根据公式f(T)＝f(T 0)+s(T-T 0)+r(T-T 0) 2进行二阶温度补偿；
r＝V out×F；
其中，T 0为常温，T为当前温度，f(T 0)为温度为T 0时的基础电磁波吸收比值，s为一阶补偿系数，V out为触发电压，F为比例系数，r为二阶补偿系数。
一种可能的实现方式中，所述微分转换电路，用于根据公式
Figure PCTCN2018117988-appb-000001
确定触发电压；
其中，K为比例常数，ΔT为在预设时间段t内的温度变化量，V out为触发电压。
一种可能的实现方式中，所述SAR传感器，与所述终端的天线电连接，用于接收天线检测到的寄生电容量；
所述SAR传感器，还用于在所述寄生电容量与所述基线数据之间的差值大于预设阈值时，则判定为人体靠近所述终端，否则，判定人体远离所述终端。
第二方面，本申请实施例还提供一种对终端的SAR传感器进行温度补偿的方法，包括：
接收温度感应装置发送的第一触发信号，所述第一触发信号为所述温度感应装置在检测到SAR传感器的温度变化量超过预设值时产生的；
根据所述第一触发信号向所述SAR传感器发送第一温控信号，所述第一温控信号用于指示所述SAR传感器启动二阶温度补偿，所述二阶温度补偿与所述SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据。
一种可能的实现方式中，在所述二阶温度补偿与所述SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据之后，还包括：
接收所述温度感应装置发送的第二触发信号，所述第二触发信号是所述温度感应装置在检测到所述温度变化量未超过所述预设值时产生的；
根据所述第二触发信号向所述SAR传感器发送第二温控信号，所述第二温控信号用于指示所述SAR传感器停止所述二阶温度补偿功能，所述一阶温度补偿功能用于补偿所述SAR传感器的基线数据。
一种可能的实现方式中，根据公式f(T)＝f(T 0)+s(T-T 0)进行一阶温度补偿；
根据公式f(T)＝f(T 0)+s(T-T 0)+r(T-T 0) 2和公式r＝V out×F进行二阶温度补偿；
其中，T 0为常温，T为当前温度，f(T 0)为温度为T 0时的基础电磁波吸收比值，s为一阶补偿系数，V out为触发电压，F为比例系数，r为二阶补偿系数。
一种可能的实现方式中，所述温度感应装置包括温度传感器、微分转换电路以及比较器，则在接收温度感应装置发送的第一触发信号之前，还包括：
所述微分转换电路接收所述温度传感器测量到的温度，并根据预设时间长度内所述温度传感器所传送的温度，计算温度变化量；且根据所述温度变化量以及预设热电转换系数，确定触发电压，并将所述触发电压发送给所述比较器，以使所述比较器将所述触发电压与预设电压进行比较，并在所述触发电压大于所述预设电压时，发送所述第一触发信号。
一种可能的实现方式中，该方法还包括：所述SAR传感器接收所述终端的天线所检测到的寄生电容量，并在所述寄生电容量与所述基线数据之间的差值大于预设阈值时，判定为人体靠近所述终端，否则，判定为人体远离所述终端。
第三方面，本申请实施例提供一种终端，包括：存储器和处理器；其中：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行如第二方面或第二方面的任意可能的实现方式中所述方法。
第四方面，本申请实施例提供一种计算机存储介质，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行如第二方面或第二方面的任意可能的实现方式中所述方法。
第五方面，本申请实施例提供一种计算机程序产品，所述计算机程序产品包括存储在计算机可读存储介质上的计算程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行如第二方面或第二方面的任意可能的实现方式中所述方法。
上述实施例提供的一种终端，包括：温度感应装置、处理器及SAR传感器；所述温度感应装置，与所述处理器电连接，用于在检测到SAR传感器的温度变化量超过预设值时，向所述处理器发送第一触发信号；所述处理器，与所述SAR传感器电连接，用于在接收到所述第一触发信号时，向所述SAR传感器发送第一温控信号；所述SAR传感器，用于根据所述第一温控信号启动所述SAR传感器的二阶温度补偿，所述二阶温度补偿与所述SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据。可以看出，在温度变化量超过预设值时，通过向处理器发送第一触发信号，而处理器在接收到第一触发信号后，向SAR传感器发送第一温控信号，然后，SAR传感器根据第一温控信号启动SAR传感器的二阶温度补偿，即用二阶温度补偿与SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据，因此，在一些温度变化比 较快的应用场景中，采用二阶温度补偿与SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据，从而保证SAR传感器的基线数据能够实时的跟踪温度的变化量，避免了终端因为温度从低到高或者从高到低剧烈变化的时候，所引起的SAR传感器的误触发的问题，如果温度的变化量没有超过预设值，则并不会触发二阶温度补偿，还是采用SAR传感器的一阶温度补偿对SAR传感器的基线数据进行补偿，因此，能够保证终端在各种温度变化的场景下，不会出现SAR传感器的误触发的问题。
上述实施例提供的一种对终端的SAR传感器进行温度补偿的方法，包括：接收温度感应装置发送的第一触发信号，所述第一触发信号为所述温度感应装置在检测到SAR传感器的温度变化量超过预设值时产生的；然后，根据所述第一触发信号向所述SAR传感器发送第一温控信号，所述第一温控信号用于指示所述SAR传感器启动二阶温度补偿，所述二阶温度补偿与所述SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据。可以看出，在温度变化量超过预设值时，通过向处理器发送第一触发信号，而处理器在接收到第一触发信号后，向SAR传感器发送第一温控信号，然后，SAR传感器根据第一温控信号启动SAR传感器的二阶温度补偿，即用二阶温度补偿与SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据，因此，在一些温度变化比较快的应用场景中，采用二阶温度补偿与SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据，从而保证SAR传感器的基线数据能够实时的跟踪温度的变化量，避免了终端因为温度从低到高或者从高到低剧烈变化的时候，所引起的SAR传感器的误触发的问题，如果温度的变化量没有超过预设值，则并不会触发二阶温度补偿，还是采用SAR传感器的一阶温度补偿对SAR传感器的基线数据进行补偿，因此，能够保证终端在各种温度变化的场景下，不会出现SAR传感器的误触发的问题。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍。
图1为本申请实施例提供的一种温度变化比较快的应用场景的示意图；
图2为本申请实施例提供的一种终端的结构示意图；
图3为本申请实施例提供的终端与天线连接的结构示意图；
图4为本申请实施例提供的一阶温度补偿和二阶温度补偿的响应曲线图；
图5为本申请实施例提供的一种对终端的SAR传感器进行温度补偿的方法流程图。
具体实施方式
下面将结合附图对本申请作进一步地详细描述。
图2示例性示出了本申请实施例提供的一种终端的结构示意图，如图2所示，该终端可包括：温度感应装置1、处理器2以及SAR传感器3。其中：
温度感应装置1，与处理器2电连接，用于在检测到SAR传感器3的温度变化量超过预设值时，向处理器2发送第一触发信号。
处理器2，与SAR传感器3电连接，用于在接收到第一触发信号时，向SAR传感器发送第一温控信号。
SAR传感器3，用于根据第一温控信号启动SAR传感器3的二阶温度补偿，二阶温度补偿与SAR传感器3的一阶温度补偿共同补偿SAR传感器3的基线数据。
可选的，参考图2所示，为了能够检测SAR传感器的温度、计算温度变化量以及在检测到SAR传感器3的温度变化量超过预设值时，向处理器2发送第一触发信号。在一种实施方式中，温度感应装置1可包括：温度传感器11、微分转换电路12及比较器13。其中：
温度传感器11，用于将测量到的温度发送给微分转换电路12。
微分转换电路12，与温度传感器11电连接，用于根据预设时间长度内温度传感器所传送的温度，计算温度变化量；并根据温度变化量以及预设热点 转换系数，确定触发电压，并将触发电压发送给比较器13。
比较器13，与微分转换电路12电连接，用于将触发电压与预设电压进行比较，若触发电压大于预设电压，则向处理器2发送第一触发信号。例如，比较器可向处理器的其中一个芯片引脚发送一个低电平，以用于表示向处理器发送第一触发信号，当然，在具体实施时，比较器也可向处理器的其中一个芯片引脚发送高电平，以用于表示向处理器发送第一触发信号。
为了温度传感器11能够及时的测量SAR传感器3的温度变化，在具体实施时，可将温度传感器设置于SAR传感器3的周边，温度传感器11距离SAR传感器3越近越好。
可选的，温度传感器11可以为热敏电阻，也可以为其它类型的热敏模块，以用于实时监测SAR传感器3的温度。
可选的，预设值可根据经验设定，例如，可根据不同的SAR传感器对温度补偿的效果实际试验界定，比如，当SAR传感器的一阶温度补偿效果比较好，则可将预设值设置的大一些，反之，当SAR传感器的一阶温度补偿效果不是很好，则可将预设值设置的小一些，并通过二阶温度补偿进行补偿。
具体的，在温度传感器11将测量到的温度发送给微分转换电路12以后，微分转换电路12根据预设时间长度内温度传感器11所传输的温度，计算温度变化量。例如，预设时间长度为1分钟，假设温度传感器11在2018年3月20日14:48分测量到的温度为10℃，在2018年3月20日14:49分测量到的温度为12℃，则温度变化量为2，预设时间长度为1。
之后，微分转换电路12根据温度变化量以及预设热点转换系数，确定触发电压。
具体的，微分转换电路12，可根据下列公式一确定触发电压。
Figure PCTCN2018117988-appb-000002
上述公式一中，K为比例常数，ΔT为在预设时间段t内的温度变化量，V out为触发电压。其中，K是依据微分转换电路12的参数所确定的。
从上述公式一中可以看出，通过微分转换电路12实现对温度变化量的检测，在预设的时间段内，温度变化越剧烈的时候，触发电压的值越大，反之，在预设的时间段内，温度变化越不剧烈的时候，触发电压的值越小，甚至在极限的情况下，在预设的时间段内，当温度不变化的时候，触发电压的值为零。可选的，在微分转换电路12根据上述公式一确定触发电压以后，可将触发电压发送给比较器13，由比较器13将触发电源与预设电压进行比较，在触发电压大于预设电压时，可向处理器2发送第一触发信号，处理器2在接收到第一触发信号以后，可向SAR传感器3发送第一温控信号，SAR传感器3在接收到第一温控信号后，可启动SAR传感器3的二阶温度补偿。而在触发电压不大于预设电压时，可向处理器发送第二触发信号，即在触发电压小于等于预设电压时，可向处理器2发送第二触发信号，处理器2在接收到第二触发信号时，向SAR传感器3发送第二温控信号，SAR传感器3在接收到第二温控信号以后，可停止二阶温度补偿，仅对SAR传感器进行一阶温度补偿。其中，预设电压是可以通过软件程序调控预设电压的幅度根据不同的应用场景设置不同的预设电压。
具体的，SAR传感器3在接收到第一温控信号以后，可根据下列公式二进行一阶温度补偿以及根据下列公式三和下列公式四进行二阶温度补偿；SAR传感器3在接收到第二温控信号以后，可根据下列公式二进行一阶温度补偿。
f(T)＝f(T 0)+s(T-T 0)          (公式二)
根据公式f(T)＝f(T 0)+s(T-T 0)+r(T-T 0) 2       (公式三)
其中，公式三中的r可通过下列公式四获得
r＝V out×F             (公式四)
其中，T 0为常温，T为当前温度，f(T 0)为温度为T 0时的基础电磁波吸收比值，s为一阶补偿系数，V out为触发电压，F为比例系数，可以根据实际测试的数据可以调试变动，r为二阶补偿系数。
需要说明的是，从上述公式二与公式三来看，二阶补偿在一阶补偿的基础上增加了二次的小量，在温度的变化没有引起触发电压大于预设电压的情况下，这个二次小量很小可以忽略，而在温度的变化引起了触发电压大于预设电压的情况下，这个二次小量便不可忽略了，此时，可启动二阶温度补偿，即采用二阶温度补偿与一阶温度补偿共同对SAR传感器的基线数据进行补偿。
可选的，SAR传感器还可通过隔离模块(串联的大电感或者其他，不限定)和天线连接，或者用单独的SAR传感器的天线执行检测。
可选的，可在终端内设置单独的天线，以用于检测寄生电容量，天线在检测到寄生电容量以后，将检测到的寄生电容量发送给SAR传感器，然后终端根据SAR传感器接收的寄生电容量与SAR传感器的基线数据之间的差值，判断人体是接近终端还是远离终端。
具体的，当寄生电容量与SAR传感器之间的差值大于预设的阈值时，则判定为人体靠近终端，当寄生电容量与SAR传感器之间的差值小于预设的阈值时，则判定为人体远离终端。
可选的，SAR传感器3还可与终端的天线连接，用于接收天线检测到的寄生电容量。例如，在一种实施方式中，终端100的SAR传感器可与终端的下天线101与上天线102连接，以用于接收天线检测到的寄生电容量，参见图3。
可选的，SAR传感器3，在接收天线检测到的寄生电容量之后，还可根据寄生电容量与基线数据之间的差值大于阈值时，判定为人体靠近终端100，否则，判定人体远离终端100。
终端的天线在检测到寄生电容量之后，将寄生电容量与写入存储区中的基线数据之间的差值，并根据该差值判断人体是靠近终端还是远离终端，而又由于寄生电容量在温度剧烈变化时不能被控制，因此，通过对SAR传感器的基线数据进行补偿的方式，来降低温度对寄生电容量与基线数据之间的差值的影响，从而能够更准确的判断人体靠近还是远离。
下面通过一个具体的图例对二阶补偿的技术方案进行详细的解释说明。
图4中的曲线a是没有经过二阶温度补偿，仅经过了一阶温度补偿的基线数据的响应曲线，而曲线b则是既经过了二阶温度补偿，又经过了一阶温度补偿的合成曲线。从图4中可以看出，在温度变化很快的情况下，仅经过一阶温度补偿跟踪基线数据的时间为t 1-t 4，而经过一阶温度补偿和二阶温度补偿共同补偿的基线数据的时间为t 2-t 3，从图中也可以看出t 2到t 3的时间也很短，因此，在温度变化很快的情况下，终端使用一阶温度补偿和二阶温度共同补偿的方案，相比仅使用一阶温度补偿的方案而言，能够节省出t 1-t 2和节省出t 3-t 4的判定时间，可以有效的缩短温度快速变化后基线数据的变化相应时间，如此，能够判断更准确的判断终端是否远离。
根据以上内容可以看出，在温度变化量超过预设值时，通过向处理器发送第一触发限号，而处理器在接收到第一触发信号后，向SAR传感器发送第一温控信号，然后，SAR传感器根据第一温控信号启动SAR传感器的二阶温度补偿，即用二阶温度补偿与SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据，因此，在一些温度变化比较快的应用场景中，采用二阶温度补偿与SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据，从而保证SAR传感器的基线数据能够实时的跟踪温度的变化量，避免了终端因为温度从低到高或者从高到低剧烈变化的时候，所引起的SAR传感器的误触发的问题，如果温度的变化量没有超过预设值，则并不会触发二阶温度补偿，还是采用SAR传感器的一阶温度补偿对SAR传感器的基线数据进行补偿，因此，能够保证终端在各种温度变化的场景下，不会出现SAR传感器的误触发的问题，如此，还能够减少终端的资源调度和功耗。
基于相同的技术构思，本申请实施例还提供一种对终端的SAR传感器进行温度补偿的方法，应用于包括处理器、温度感应装置和SAR传感器的终端中，如图5所示，该方法可包括：
S501、接收温度感应装置发送的第一触发信号，所述第一触发信号为温度感应装置在检测到SAR传感器的温度变化量超过预设值时产生的。
S502、根据第一触发信号向SAR传感器发送第一温控信号，所述第一温控信号用于指示SAR传感器启动二阶温度补偿，所述二阶温度补偿与所述SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据。
为了能够减少终端的资源调度和功耗，在二阶温度补偿与SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据之后，还可接收所述温度感应装置发送的第二触发信号，所述第二触发信号是所述温度感应装置在检测到所述温度变化量未超过所述预设值时产生的；然后，根据所述第二触发信号向所述SAR传感器发送第二温控信号，所述第二温控信号用于指示所述SAR传感器停止所述二阶温度补偿功能，所述一阶温度补偿功能用于补偿所述SAR传感器的基线数据。
可选的，可根据上述公式二进行一阶温度补偿，可根据上述公式三、公式四进行二阶温度补偿。
可选的，所述温度感应装置包括温度传感器、微分转换电路以及比较器，则在接收温度感应装置发送的第一触发信号之前，还包括：
所述微分转换电路接收所述温度传感器测量到的温度，并根据预设时间长度内所述温度传感器所传送的温度，计算温度变化量；且根据所述温度变化量以及预设热电转换系数，确定触发电压，并将所述触发电压发送给所述比较器，以使所述比较器将所述触发电压与预设电压进行比较，并在所述触发电压大于所述预设电压时，发送所述第一触发信号。
可选的，该方法还包括：
所述SAR传感器接收所述终端的天线所检测到的寄生电容量，并在所述寄生电容量与所述基线数据之间的差值大于预设阈值时，判定为人体靠近所述终端，否则，判定为人体远离所述终端。
综上所述，上述实施例提供的一种对终端的SAR传感器进行温度补偿的方法及装终端，在温度变化量超过预设值时，通过向处理器发送第一触发限号，而处理器在接收到第一触发信号后，向SAR传感器发送第一温控信号，然后，SAR传感器根据第一温控信号启动SAR传感器的二阶温度补偿，即用 二阶温度补偿与SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据，因此，在一些温度变化比较快的应用场景中，采用二阶温度补偿与SAR传感器的一阶温度补偿共同补偿SAR传感器的基线数据，从而保证SAR传感器的基线数据能够实时的跟踪温度的变化量，避免了终端因为温度从低到高或者从高到低剧烈变化的时候，所引起的SAR传感器的误触发的问题，如果温度的变化量没有超过预设值，则并不会触发二阶温度补偿，还是采用SAR传感器的一阶温度补偿对SAR传感器的基线数据进行补偿，因此，能够保证终端在各种温度变化的场景下，不会出现SAR传感器的误触发的问题，如此，还能够减少终端的资源调度和功耗。
基于相同构思，本申请实施例提供了另一种终端，可用于执行上述对终端的SAR传感器进行温度补偿的方法流程。基于上述图2所示的终端结构，还可以包括存储器，存储器和处理器可以通过总线通信。
其中，存储器用于存储程序。具体地，程序可以包括程序代码，程序代码包括计算机操作指令。存储器可以为易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，简称RAM)；也可以为非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，简称HDD)或固态硬盘(solid-state drive，简称SSD)；还可以为上述任一种或任多种易失性存储器和非易失性存储器的组合。
处理器可以是中央处理器(central processing unit，简称CPU)，网络处理器(network processor，简称NP)或者CPU和NP的组合。还可以是硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，简称ASIC)，可编程逻辑器件(programmable logic device，简称PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，简称CPLD)，现场可编程逻辑门阵列(field-programmable gate array，简称FPGA)，通用阵列逻辑(generic array logic，简称GAL)或其任意组合。
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行上述对终端的SAR传感器进行温度补偿的方法。
本申请实施例还提供了一种计算机存储介质，用于储存为上述计算设备所用的计算机程序指令，其包含用于执行上述对终端的SAR传感器进行温度补偿的方法的程序。
所述计算机存储介质可以是计算机能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如，软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本领域内的技术人员应明白，本申请实施例可提供为方法、系统、或计算机程序产品。因此，本申请实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (13)

  1. 一种终端，其特征在于，包括：温度感应装置、处理器及SAR传感器；
    所述温度感应装置，与所述处理器电连接，用于在检测到SAR传感器的温度变化量超过预设值时，向所述处理器发送第一触发信号；
    所述处理器，与所述SAR传感器电连接，用于在接收到所述第一触发信号时，向所述SAR传感器发送第一温控信号；
    所述SAR传感器，用于根据所述第一温控信号启动所述SAR传感器的二阶温度补偿，所述二阶温度补偿与所述SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据。
  2. 如权利要求1所述的终端，其特征在于，所述温度感应装置包括温度传感器、微分转换电路及比较器；
    所述温度传感器，用于将测量到的温度发送给所述微分转换电路；
    所述微分转换电路，与所述温度传感器电连接，用于根据预设时间长度内所述温度传感器所传送的温度，计算温度变化量；并根据所述温度变化量以及预设热电转换系数，确定触发电压，并将所述触发电压发送给所述比较器；
    所述比较器，与所述微分转换电路电连接，用于将所述触发电压与预设电压进行比较，若所述触发电压大于所述预设电压，则向所述处理器发送所述第一触发信号。
  3. 如权利要求2所述的终端，其特征在于，
    所述比较器，还用于在所述触发电压不大于所述预设电压时，向所述处理器发送第二触发信号；
    所述处理器，还用于在接收到所述第二触发信号时，向所述SAR传感器发送第二温控信号；
    所述SAR传感器，还用于根据所述第二温控信号停止所述二阶温度补偿， 所述SAR传感器的一阶温度补偿功能用于补偿所述SAR传感器的基线数据。
  4. 如权利要求1所述的终端，其特征在于，所述温度传感器设置于所述SAR传感器周边。
  5. 如权利要求1所述的终端，其特征在于，所述SAR传感器，用于根据公式f(T)＝f(T 0)+s(T-T 0)进行一阶温度补偿；
    根据公式f(T)＝f(T 0)+s(T-T 0)+r(T-T 0) 2和公式r＝V out×F进行二阶温度补偿；
    其中，T 0为常温，T为当前温度，f(T 0)为温度为T 0时的基础电磁波吸收比值，s为一阶补偿系数，V out为触发电压，F为比例系数，r为二阶补偿系数。
  6. 如权利要求2所述的终端，其特征在于，
    所述微分转换电路，用于根据公式
    Figure PCTCN2018117988-appb-100001
    确定触发电压；
    其中，K为比例常数，ΔT为在预设时间段t内的温度变化量，V out为触发电压。
  7. 如权利要求1-6任一项所述的终端，其特征在于，
    所述SAR传感器，与所述终端的天线电连接，用于接收天线检测到的寄生电容量；
    所述SAR传感器，还用于在所述寄生电容量与所述基线数据之间的差值大于预设阈值时，则判定为人体靠近所述终端，否则，判定人体远离所述终端。
  8. 一种对终端的SAR传感器进行温度补偿的方法，其特征在于，包括：
    接收温度感应装置发送的第一触发信号，所述第一触发信号为所述温度感应装置在检测到SAR传感器的温度变化量超过预设值时产生的；
    根据所述第一触发信号向所述SAR传感器发送第一温控信号，所述第一温控信号用于指示所述SAR传感器启动二阶温度补偿，所述二阶温度补偿与 所述SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据。
  9. 如权利要求8所述的方法，其特征在于，在所述二阶温度补偿与所述SAR传感器的一阶温度补偿共同补偿所述SAR传感器的基线数据之后，还包括：
    接收所述温度感应装置发送的第二触发信号，所述第二触发信号是所述温度感应装置在检测到所述温度变化量未超过所述预设值时产生的；
    根据所述第二触发信号向所述SAR传感器发送第二温控信号，所述第二温控信号用于指示所述SAR传感器停止所述二阶温度补偿功能，所述一阶温度补偿功能用于补偿所述SAR传感器的基线数据。
  10. 如权利要求8所述的方法，其特征在于，
    根据公式f(T)＝f(T 0)+s(T-T 0)进行一阶温度补偿；
    根据公式f(T)＝f(T 0)+s(T-T 0)+r(T-T 0) 2和公式r＝V out×F进行二阶温度补偿；
    其中，T 0为常温，T为当前温度，f(T 0)为温度为T 0时的基础电磁波吸收比值，s为一阶补偿系数，V out为触发电压，F为比例系数，r为二阶补偿系数。
  11. 一种终端，其特征在于，包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行权利要求8～10任一项所述方法。
  12. 一种计算机存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行权利要求8～10中任一项所述的方法。
  13. 一种计算机程序产品，其特征在于，所述计算机程序产品包括存储在计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行权利要求8～10任一项所述 方法。
PCT/CN2018/117988 2018-04-10 2018-11-28 一种对终端的sar传感器进行温度补偿的方法及终端 WO2019196424A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112018007198.7T DE112018007198T5 (de) 2018-04-10 2018-11-28 Verfahren zum Temperaturausgleichen eines SAR-Sensors eines Terminals und Terminal
US17/043,047 US11366137B2 (en) 2018-04-10 2018-11-28 Temperature compensation method for SAR sensor of terminal, and terminal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810315697.XA CN109001505B (zh) 2018-04-10 2018-04-10 一种对终端的sar传感器进行温度补偿的方法及终端
CN201810315697.X 2018-04-10

Publications (1)

Publication Number Publication Date
WO2019196424A1 true WO2019196424A1 (zh) 2019-10-17

Family

ID=64574128

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/117988 WO2019196424A1 (zh) 2018-04-10 2018-11-28 一种对终端的sar传感器进行温度补偿的方法及终端

Country Status (4)

Country Link
US (1) US11366137B2 (zh)
CN (1) CN109001505B (zh)
DE (1) DE112018007198T5 (zh)
WO (1) WO2019196424A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102252572B1 (ko) * 2019-05-14 2021-05-17 어보브반도체 주식회사 그립 센싱 방법 및 장치
CN111399608A (zh) * 2020-03-17 2020-07-10 上海闻泰信息技术有限公司 终端温度控制装置、方法、终端及可读存储介质
CN111511006B (zh) * 2020-04-21 2023-03-24 Oppo广东移动通信有限公司 天线发射功率的调节方法、装置及移动终端
TWI780710B (zh) * 2021-05-18 2022-10-11 緯創資通股份有限公司 電池容量顯示方法及其相關電腦系統

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070014384A (ko) * 2005-07-28 2007-02-01 주식회사 팬택 온도 변화에 따라 출력 전력을 조정하는 무선통신 단말기및 그 방법
CN103493552A (zh) * 2011-03-04 2014-01-01 高通股份有限公司 用于针对比吸收率符合性的动态传输功率限值回退的系统和方法
CN103703840A (zh) * 2011-03-04 2014-04-02 高通股份有限公司 用于针对比吸收率符合性的动态传输功率限值回退的系统和方法
CN105137375A (zh) * 2014-05-28 2015-12-09 上海联影医疗科技有限公司 射频通道校准方法及装置、sar测量方法、磁共振系统
CN106900051A (zh) * 2017-02-24 2017-06-27 上海创功通讯技术有限公司 一种降低电磁辐射比吸收率的方法及装置
CN107005951A (zh) * 2014-12-05 2017-08-01 微软技术许可有限责任公司 选择性比吸收率调整

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9997824B2 (en) * 2009-12-28 2018-06-12 Harry V. Lehmann Method and system to minimize radiation exposure from mobile phones and devices
DE102011004622B4 (de) * 2011-02-23 2013-04-18 Ident Technology Ag Kapazitive Sensoreinrichtung und Funkgerät mit kapazitiver Sensoreinrichtung sowie Verfahren zum Einstellen einer Sendeleistung eines Funkgerätes
US8710752B2 (en) * 2011-03-03 2014-04-29 Dialog Semiconductor Inc. Adaptive switch mode LED system
TWI407632B (zh) * 2011-11-17 2013-09-01 Wistron Neweb Corp 射頻裝置及無線通訊裝置
US10893488B2 (en) * 2013-06-14 2021-01-12 Microsoft Technology Licensing, Llc Radio frequency (RF) power back-off optimization for specific absorption rate (SAR) compliance
KR102139145B1 (ko) * 2014-04-22 2020-07-29 삼성전자주식회사 센서 겸용 안테나 장치를 갖는 전자 장치
CN107590309B (zh) * 2017-08-03 2020-04-24 西安电子科技大学 基于近似计算公式的网状天线电性能时域特性分析方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070014384A (ko) * 2005-07-28 2007-02-01 주식회사 팬택 온도 변화에 따라 출력 전력을 조정하는 무선통신 단말기및 그 방법
CN103493552A (zh) * 2011-03-04 2014-01-01 高通股份有限公司 用于针对比吸收率符合性的动态传输功率限值回退的系统和方法
CN103703840A (zh) * 2011-03-04 2014-04-02 高通股份有限公司 用于针对比吸收率符合性的动态传输功率限值回退的系统和方法
CN105137375A (zh) * 2014-05-28 2015-12-09 上海联影医疗科技有限公司 射频通道校准方法及装置、sar测量方法、磁共振系统
CN107005951A (zh) * 2014-12-05 2017-08-01 微软技术许可有限责任公司 选择性比吸收率调整
CN106900051A (zh) * 2017-02-24 2017-06-27 上海创功通讯技术有限公司 一种降低电磁辐射比吸收率的方法及装置

Also Published As

Publication number Publication date
DE112018007198T5 (de) 2020-12-10
US11366137B2 (en) 2022-06-21
CN109001505B (zh) 2019-12-24
US20210018534A1 (en) 2021-01-21
CN109001505A (zh) 2018-12-14

Similar Documents

Publication Publication Date Title
WO2019196424A1 (zh) 一种对终端的sar传感器进行温度补偿的方法及终端
US10488274B2 (en) Acoustic ambient temperature and humidity sensing
JP6571738B2 (ja) ワイヤレス給電の検査装置及び関連の方法
US20190379234A1 (en) Battery Charging Management Method and Terminal
US20150128733A1 (en) Methods, devices and systems for self charging sensors
WO2020046487A1 (en) Wireless charging system with temperature sensor array
US20180052506A1 (en) Voltage and frequency scaling apparatus, system on chip and voltage and frequency scaling method
TWI442078B (zh) 定位裝置、定位方法及其電腦程式產品
US20220136909A1 (en) Method and device for temperature detection and thermal management based on power measurement
US10520368B2 (en) Electronic apparatus and surface temperature estimation method therefor
US20190050620A1 (en) Method and system for calibration of an optical fingerprint sensing device
KR20170036750A (ko) 바디 존재 센서 교정
WO2018094929A1 (zh) 一种估算温度的方法及装置
JP2019095948A (ja) 携帯電子機器、プロセッサ制御方法およびプロセッサ制御プログラム
CN110858774A (zh) 毫米波天线管理
CN113129939A (zh) 具有温度缓解机制的设备及其操作方法
CN103994840A (zh) 一种获取移动终端电池的最高温度值的方法及装置
TWI609525B (zh) 電容耦合至天線模組之感測器墊
KR102169105B1 (ko) 무선 연결 가능한 구성 요소들을 포함하는 전자 장치에서 상태 제어 장치 및 방법
KR101831066B1 (ko) 센서 어레이를 이용한 온도 모니터링 박스 및 그 방법
US20190378564A1 (en) Memory device and operating method thereof
WO2022188381A1 (zh) 毫米波雷达的动态校准方法、装置和手持终端
US10416233B2 (en) Electronic apparatus and control method thereof
TW201210222A (en) Method for controlling function and electronic apparatus for applying thereof
US10749575B2 (en) Environmental condition and media composition sensing using near-field communications

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18914567

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 18914567

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 18914567

Country of ref document: EP

Kind code of ref document: A1