Transmitting power adjustment method and electronic equipment

Abstract

The embodiment of the present application discloses a transmission power adjustment method and an electronic device, which may include: the electronic device obtains sensor information collected by a sensor or image information collected by a camera; then, based on the sensor information or image information, determines the interaction scene with the user; then, from a reference specific absorption rate SAR value set, determines the reference SAR value corresponding to the interaction scene; then, based on the reference SAR value and the current SAR value corresponding to the interaction scene, determines the first adjustment SAR value to be adjusted and the adjustment power amount corresponding to the first adjustment SAR value; finally, based on the adjustment power amount corresponding to the first adjustment SAR value, adjusts the transmission power of the transmitting antenna from the first transmission power to the second transmission power, and the second transmission power is less than the first transmission power. By adopting the present application, the transmission power of the electronic device can be adjusted according to the scene, which is conducive to improving the flexibility of the electronic device in adjusting the transmission power.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a transmission power adjustment method and electronic equipment. Background Art

[0002] With the continuous development of terminal technology, electronic devices have gradually become an indispensable part of daily life, and the use of electronic devices will generate electromagnetic radiation, the impact of this electromagnetic radiation on the human body cannot be ignored. Specific absorption rate (SAR) is an indicator to measure the absorption of radio frequency energy by the human body, which can be used to evaluate the impact of electronic devices on the human body during use. Among them, different regions set different standards for specific absorption rate, and it is crucial to reduce the SAR value to meet the standard requirements. Generally, reducing the transmission power of the transmitting antenna of an electronic device can directly lead to a reduction in the SAR value. In related technologies, a capacitive proximity sensor can be used to identify that an object is approaching an electronic device, and then the transmission power of the electronic device is adjusted to achieve the purpose of reducing SAR. However, this method will adjust the transmission power when any object approaching the electronic device is identified, and the transmission power of the electronic device is usually adjusted to a fixed value, which lacks flexibility. Summary of the invention

[0003] The embodiments of the present application provide a transmission power adjustment method and an electronic device, which can adjust the transmission power of the electronic device according to different scenarios, which is conducive to improving the flexibility of the electronic device in adjusting the transmission power.

[0004] In a first aspect, an embodiment of the present application provides a transmission power adjustment method, which can be applied to an electronic device, the method comprising: obtaining sensor information or image information collected by a camera device; determining an interaction scene between the electronic device and an object of use based on the sensor information or the image information; determining a reference SAR value corresponding to the interaction scene from a reference SAR value set; determining a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value based on the reference SAR value and the current SAR value; adjusting the transmission power of a transmitting antenna from a first transmission power to a second transmission power based on the adjusted power amount corresponding to the first adjusted SAR value; the second transmission power is less than the first transmission power.

[0005] In the above embodiment, the electronic device can identify different interaction scenarios with the user (i.e., the user), and then adjust the transmit power of the transmit antenna based on the different interaction scenarios, thereby achieving different degrees of SAR reduction. This can minimize the impact on communication performance while meeting SAR value compliance, which is conducive to improving the flexibility of adjusting the transmit power.

[0006] In combination with the first aspect, in one possible manner, the method further includes: in response to the presence of a user object within a preset distance range of the electronic device, determining a second adjusted SAR value and an adjusted power amount corresponding to the second adjusted SAR value based on the distance between the electronic device and the user object; the distance is negatively correlated with the second adjusted SAR value; based on the adjusted power amount corresponding to the second adjusted SAR value, adjusting the transmit power of the transmitting antenna from the initial transmit power to the first transmit power; the first transmit power is less than the initial transmit power.

[0007] In this technical solution, when the electronic device detects the presence of a user within a preset distance range, it can first reduce the transmission power of the transmitting antenna from the initial transmission power to the first transmission power to meet the body SAR value requirement.

[0008] In combination with the first aspect, in one possible manner, the method further includes: determining whether there is a user object within a preset distance range of the electronic device based on the collected infrared temperature and / or infrared wavelength.

[0009] In this technical solution, the electronic device can first collect infrared temperature through a temperature sensor. If the collected infrared temperature is within a preset temperature range, the optical wave sensor can be triggered to collect infrared wavelengths. If the collected infrared wavelengths are within the preset wavelength range, it can be determined that there is a user object within a preset distance range of the electronic device. Optionally, the electronic device can also use a temperature sensor alone or a optical wave sensor alone to determine whether there is a user object within a preset distance range.

[0010] In combination with the first aspect, in one possible manner, the above-mentioned interaction scenario is a voice call scenario or an object gaze scenario.

[0011] In combination with the first aspect, in a possible manner, the reference SAR value set includes reference SAR values ​​corresponding to different body parts of the subject.

[0012] In combination with the first aspect, in one possible manner, the determining of the reference SAR value corresponding to the interaction scenario from the reference SAR value set includes: determining the reference SAR value corresponding to the voice call scenario from the reference SAR value corresponding to the head or the reference SAR value corresponding to the hand; or determining the reference SAR value corresponding to the object gaze scenario from the reference SAR values ​​corresponding to the limbs.

[0013] In this technical solution, when the interaction scene between the electronic device and the user is a voice call scene, it can be inferred that the user's head and hands are in contact with the electronic device, so the reference SAR value corresponding to the voice call scene can be determined from the reference SAR value corresponding to the head or the reference SAR value corresponding to the hand; when the interaction scene between the electronic device and the user is an object gaze scene, it can be inferred that the user's limbs (such as both hands) are in contact with the electronic device, so the reference SAR value corresponding to the object gaze scene can be determined from the reference SAR values ​​corresponding to the limbs. In this way, it is possible to distinguish scenes and determine the reference SAR values ​​corresponding to different scenes to meet the SAR value requirements for different body parts specified in the standard.

[0014] In combination with the first aspect, in one possible manner, determining the reference SAR value corresponding to the voice call scenario from the reference SAR value corresponding to the head or the reference SAR value corresponding to the hand includes: in response to the reference SAR value corresponding to the head being less than the reference SAR value corresponding to the hand, determining that the reference SAR value corresponding to the voice call scenario is the reference SAR value corresponding to the head; or, in response to the reference SAR value corresponding to the hand being less than the reference SAR value corresponding to the head, determining that the reference SAR value corresponding to the voice call scenario is the reference SAR value corresponding to the hand.

[0015] In this technical solution, for the voice call scenario, since the head and hands of the user may be in contact with the electronic device, the electronic device can select a lower SAR value from the reference SAR values ​​corresponding to the head or hand as the reference SAR value corresponding to the voice call scenario, so as to more strictly control the compliance of the SAR value of the electronic device and avoid affecting human health.

[0016] In combination with the first aspect, in one possible manner, the above method also includes: displaying a transmission power adjustment interface; the transmission power adjustment interface includes one or more of the following: distance information, power information, scene information, and status information; the distance information indicates the distance between the electronic device and the object of use, the power information indicates the adjusted power amount of the transmission power of the transmitting antenna, the scene information indicates the interaction scene between the electronic device and the object of use, and the status information indicates the status of each sensor.

[0017] In this technical solution, the result of adjusting the transmit power can be displayed more intuitively through the explicit transmit power adjustment interface.

[0018] In a second aspect, an embodiment of the present application provides an electronic device, which may include an identification module, a first trigger circuit, and a processor; the identification module is used to determine an interaction scenario between the electronic device and an object of use based on sensor information or image information; based on the interaction scenario, a first signal is generated and the first signal is transmitted to the first trigger circuit; the first trigger circuit is used to transmit a second signal to the processor in response to the first signal; the processor is used to determine a reference SAR value corresponding to the interaction scenario from a reference SAR value set in response to the second signal; based on the reference SAR value and the current SAR value, a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value are determined; based on the adjusted power amount corresponding to the first adjusted SAR value, the transmit power of the transmit antenna is adjusted from the first transmit power to the second transmit power, and the second transmit power is less than the first transmit power.

[0019] In combination with the second aspect, in one possible manner, the electronic device also includes a light wave sensor; the light wave sensor is used to determine the distance between the electronic device and the object of use in response to the presence of the object of use within a preset distance range of the electronic device, and transmit the distance to the processor; the processor is also used to determine a second adjusted SAR value and an adjusted power amount corresponding to the second adjusted SAR value based on the distance; based on the adjusted power amount corresponding to the second adjusted SAR value, the transmit power of the transmitting antenna is adjusted from the initial transmit power to the first transmit power; the distance is negatively correlated with the second adjusted SAR value; the first transmit power is less than the initial transmit power.

[0020] In combination with the second aspect, in one possible manner, the electronic device also includes a temperature sensor, a filtering circuit, an amplifying circuit, and a second trigger circuit; the temperature sensor is used to collect infrared temperature; in response to the infrared temperature being within a preset temperature range, a third signal is generated and the third signal is transmitted to the filtering circuit; the filtering circuit is used to denoise the third signal to obtain a fourth signal and transmit the fourth signal to the amplifying circuit; the amplifying circuit is used to amplify the fourth signal to obtain a fifth signal and transmit the fifth signal to the second trigger circuit; the second trigger circuit is used to transmit a sixth signal to the light wave sensor in response to the fifth signal; the light wave sensor is also used to collect infrared wavelengths in response to the sixth signal; in response to the infrared wavelength being within the preset wavelength range, it is determined that there is a user object within a preset distance range of the electronic device.

[0021] In conjunction with the second aspect, in one possible manner, the interaction scenario is a voice call scenario or an object gaze scenario.

[0022] In a third aspect, an embodiment of the present application provides another electronic device, which includes: one or more processors, a display screen and a memory; the memory is coupled to the one or more processors, and the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the electronic device to execute: obtaining sensor information or image information collected by a camera; determining an interaction scene between the electronic device and an object of use based on the sensor information or the image information; determining a reference SAR value corresponding to the interaction scene from a reference SAR value set; determining a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value based on the reference SAR value and the current SAR value; adjusting the transmit power of the transmit antenna from the first transmit power to the second transmit power based on the adjusted power amount corresponding to the first adjusted SAR value; the second transmit power is less than the first transmit power.

[0023] In combination with the third aspect, in one possible manner, the one or more processors call the computer instructions to cause the electronic device to execute: in response to the presence of a usage object within a preset distance range of the electronic device, determine a second adjusted SAR value and an adjusted power amount corresponding to the second adjusted SAR value based on the distance between the electronic device and the usage object; the distance is negatively correlated with the second adjusted SAR value; based on the adjusted power amount corresponding to the second adjusted SAR value, adjust the transmission power of the transmitting antenna from the initial transmission power to the first transmission power; the first transmission power is less than the initial transmission power.

[0024] In combination with the third aspect, in one possible manner, the one or more processors call the computer instructions to cause the electronic device to execute: based on the collected infrared temperature and / or infrared wavelength, determine whether there is a usage object within a preset distance range of the electronic device.

[0025] In combination with the third aspect, in one possible manner, the above-mentioned interaction scenario is a voice call scenario or an object gaze scenario.

[0026] In combination with the third aspect, in one possible manner, the one or more processors call the computer instructions to cause the electronic device to execute: determining a reference SAR value corresponding to the voice call scenario from the reference SAR value corresponding to the head or the reference SAR value corresponding to the hand; or determining a reference SAR value corresponding to the object gaze scenario from the reference SAR values ​​corresponding to the limbs.

[0027] In combination with the third aspect, in one possible manner, the one or more processors call the computer instructions to cause the electronic device to execute: in response to the reference SAR value corresponding to the head being less than the reference SAR value corresponding to the hand, determining that the reference SAR value corresponding to the voice call scenario is the reference SAR value corresponding to the head; or, in response to the reference SAR value corresponding to the hand being less than the reference SAR value corresponding to the head, determining that the reference SAR value corresponding to the voice call scenario is the reference SAR value corresponding to the hand.

[0028] In combination with the third aspect, in one possible manner, the one or more processors call the computer instructions to cause the electronic device to execute: display a transmission power adjustment interface; the transmission power adjustment interface includes one or more of the following: distance information, power information, scene information, and status information; the distance information indicates the distance between the electronic device and the object of use, the power information indicates the adjusted power amount of the transmission power of the transmitting antenna, the scene information indicates the interaction scene between the electronic device and the object of use, and the status information indicates the status of each sensor.

[0029] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the method described in the first aspect above.

[0030] In a fifth aspect, an embodiment of the present application provides a chip system, which is coupled to a memory, and the chip system is used to read and execute a computer program stored in the memory to implement the method described in the first aspect above.

[0031] In a sixth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on an electronic device, enables the electronic device to execute the method described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of an application scenario of an embodiment of the present application;

[0033] Figure 2 It is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of the software structure of an electronic device provided in an embodiment of the present application;

[0035] Figure 4 A flowchart of a method for adjusting transmission power provided in an embodiment of the present application;

[0036] Figure 5A and Figure 5B A flowchart of another transmission power adjustment method provided in an embodiment of the present application;

[0037] Fig. 6A A schematic diagram of an electronic device adjusting transmission power based on a detected user object provided in an embodiment of the present application;

[0038] Figure 6B A schematic diagram of an electronic device adjusting transmission power based on a voice call scenario provided in an embodiment of the present application;

[0039] Figure 6C A schematic diagram of an electronic device adjusting transmission power based on an object gaze scene provided in an embodiment of the present application;

[0040] Figure 7 A flowchart of another transmission power adjustment method provided in an embodiment of the present application;

[0041] Figure 8 A schematic diagram of the structure of an electronic device is provided for an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of a transmission power adjustment interface provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] The terms "first", "second", "third", etc. in the embodiments of the present application are distinguished from different objects, rather than being used to describe a specific order. In addition, the terms "include" and "have" and any variation thereof are intended to cover non-exclusive inclusions. For example, a series of steps or units are included, or alternatively, steps or units not listed are also included, or other steps or units inherent to these processes, methods, products or devices are optionally included. The terms "one embodiment" or "some embodiments", etc. mean that the specific features, structures or characteristics described in conjunction with the embodiment are included in one or more embodiments of the present application. Thus, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in the differences in the embodiments of the present application are not necessarily all with reference to the same embodiment, but mean "one or more but not all embodiments", unless otherwise particularly emphasized.

[0045] In addition, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or multiple.

[0046] SAR is a measure of radio frequency exposure, which refers to the radio frequency energy per unit mass of the exposed object per unit time. It can be used to measure the rate at which a biological body (such as the human body) absorbs radio frequency energy from an electronic device (such as a smartphone or other wireless device). The unit is W / kg or mW / g. Among them, the larger the SAR value, the greater the impact of electromagnetic radiation on the human body, and vice versa. Different regions have set different standards for SAR values, and electronic equipment is allowed to be used only if it meets the standard requirements. For example, please refer to Table 1, which shows the different SAR value requirements set in international standards.

[0047] Table 1

[0048]

[0049] As can be seen from Table 1, some regions also set different SAR value requirements for different parts of the human body. For example, the Federal Communications Commission (FCC) of the United States sets SAR value requirements for the body, limbs, and head respectively; Innovation, Science and Economic Development Canada (ISED) sets SAR value requirements for the body, limbs, head, and hands respectively.

[0050] At present, the SAR reduction technology of electronic equipment manufacturers is usually implemented with the help of capacitive proximity sensors. Capacitive proximity sensors can detect objects close to electronic equipment, and then use the charging and discharging characteristics of capacitors to trigger electronic equipment to reduce the transmission power of the transmitting antenna to meet the official SAR value standard. However, this method will trigger SAR reduction when any object close to the electronic equipment is identified, while in reality, SAR reduction only needs to be considered when the human body is close to the electronic equipment to avoid affecting the communication performance of the electronic equipment. In addition, electronic equipment manufacturers also often use motion sensors to identify the motion state of electronic equipment, and then trigger SAR reduction based on the gyroscope principle. In this way, the motion sensor intelligently identifies the scene where the electronic equipment is moving. For scenes where the electronic equipment is prohibited from moving or approaching the human body, SAR reduction cannot be triggered, resulting in possible excessive electromagnetic radiation. Moreover, for areas where different SAR value requirements are set for different parts of the human body, the existing SAR reduction method cannot achieve the difference in SAR value reduction by distinguishing scenes.

[0051] In addition, the draft of IEC / IEEE 62209-1528 AMD1 (an international standard expected to be released in 2025) has tightened the requirements for SAR values ​​and revised the verification requirements for proximity sensors. For the verification of proximity sensors, the draft standard is discussing the addition of a new verification procedure: when verifying the trigger distance and angle, the duration at each step should be long enough (usually a few seconds) to achieve the minimum trigger distance. However, the traditional capacitive proximity sensors currently used by electronic equipment manufacturers cannot meet the requirement that "the duration at each step should be long enough." This is because, in laboratory tests, it was found that the longer the step interval duration of the traditional capacitive proximity sensor, the smaller its trigger distance, that is, it needs to be triggered at a shorter distance, which makes the sensor difficult to trigger or even fail.

[0052] Based on this, the embodiments of the present application provide a transmission power adjustment method and an electronic device, which can distinguish different scenarios and flexibly adjust the transmission power of the electronic device, so as to more comprehensively meet the SAR value requirements specified in the international standards for different body parts.

[0053] The application scenarios of the embodiments of the present application are first introduced below.

[0054] See also Figure 1 , Figure 1 Schematic diagram of application scenarios of the present application embodiment. Figure 1As shown in (1), user 101 approaches electronic device 102, and electronic device 102 can detect the infrared temperature and / or infrared wavelength emitted by user 101, thereby knowing that user 101 is approaching. In this case, electronic device 102 can adjust the transmission power of the transmitting antenna so that the SAR value of the electronic device meets the requirements of the reference SAR value corresponding to the body. Figure 1 As shown in (2), user 101 holds electronic device 102 to make a voice call, and the head and hand of user 101 are in contact with electronic device 102. In this case, electronic device 102 can adjust the transmission power of the transmitting antenna so that the SAR value of the electronic device meets the requirements of the reference SAR value corresponding to the head or the reference SAR value corresponding to the hand. Figure 1 As shown in (3), user 101 holds electronic device 102 to browse the web, and the hand of user 101 is in contact with electronic device 102. In this case, electronic device 102 can adjust the transmission power of the transmitting antenna so that the SAR value of the electronic device meets the reference SAR value requirements corresponding to the limbs.

[0055] It should be understood that Figure 1 These are merely examples of application scenarios of the embodiments of the present application. The embodiments of the present application can be applied to but are not limited to the above application scenarios.

[0056] The hardware structure and software structure of the electronic device in the embodiment of the present application are introduced below.

[0057] In the embodiments of the present application, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a personal digital assistant (PDA), etc., and the embodiments of the present application are not limited to this.

[0058] For example, see Figure 2 , Figure 2A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application.

[0059] like Figure 2 As shown, the electronic device may include: a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, and a subscriber identification module (SIM) card interface 195, etc. Among them, the sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, etc.

[0060] The processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0061] The controller can generate operation control signals according to the instruction operation code and timing signal to complete the control of instruction fetching and execution.

[0062] A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the memory. Repeated access is avoided, the waiting time of the processor 110 is reduced, and the efficiency of the system is improved. In an embodiment of the present application, the processor 110 may be used to call a software program to modify configuration parameters to control the adjustment of the transmit power of the transmit antenna.

[0063] The electronic device implements the display function through a GPU, a display screen 194, and an application processor. The GPU is a microprocessor for image processing, which connects the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

[0064] The display screen 194 is used to display images, videos, etc. The display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD), an organic light emitting diode (OLED), an active matrix organic light emitting diode or an active matrix organic light emitting diode (AMOLED), a flexible light emitting diode (FLED), Miniled, MicroLed, Micro-oLed, quantum dot light emitting diodes (QLED), low temperature polycrystalline oxide (LTPO), etc. In some embodiments, the electronic device may include 1 or N display screens 194, where N is a positive integer greater than 1. In the embodiment of the present application, the display screen 194 can be used to display a transmission power adjustment interface (such as Fig. 9 as shown).

[0065] The electronic device can realize the shooting function through ISP, camera 193, video codec, GPU, display screen 194 and application processor.

[0066] The camera 193 is used to capture still images or videos. The object generates an optical image through the lens and projects it onto the photosensitive element. The photosensitive element can be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then passes the electrical signal to the ISP for conversion into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV or other format. In some embodiments, the electronic device may include 1 or N cameras 193, where N is a positive integer greater than 1. In an embodiment of the present application, the camera can be used to collect eye image information of the user to determine whether the user is looking at the electronic device.

[0067] The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function.

[0068] The internal memory 121 can be used to store computer executable program codes, and the executable program codes include instructions. The internal memory 121 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area may store data created during the use of the electronic device (such as audio data, a phone book, etc.), etc. In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 110 executes various functional applications and data processing of the electronic device by running instructions stored in the internal memory 121 and / or instructions stored in a memory provided in the processor.

[0069] The wireless communication function of the electronic device can be implemented through antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, modem processor and baseband processor.

[0070] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of the antennas. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0071] The mobile communication module 150 can provide solutions for wireless communications including 2G / 3G / 4G / 5G, etc., applied to electronic devices. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 150 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 can be set in the same device as at least some of the modules of the processor 110.

[0072] It is to be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device. In other embodiments, the electronic device may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0073] The above introduces the hardware structure of the electronic device. The following introduces the software structure of the electronic device.

[0074] The software structure of the electronic device can adopt a layered architecture, an event-driven architecture, a micro-core architecture, a micro-service architecture, or a cloud architecture. The embodiment of the present application takes the Android system of the layered architecture as an example to exemplify the software structure of the electronic device.

[0075] For example, see Figure 3 , Figure 3 A schematic diagram of the software structure of an electronic device provided in an embodiment of the present application.

[0076] like Figure 3 As shown, the layered architecture divides the software into several layers, each with a clear role and division of labor. The layers communicate with each other through interfaces. In some embodiments, the Android system may include an application layer, an application framework layer, an Android runtime (Android Runtime, ART), a system library, and a kernel layer.

[0077] Among them, the application layer can include a series of application packages. For example, the application package can include camera, gallery, chat, map, calendar, music, call, navigation, game, video and other applications.

[0078] The application framework layer provides an application programming interface (API) and programming framework for applications in the application layer. The application framework layer includes some predefined functions.

[0079] In an embodiment of the present application, the application framework layer may include, for example, an information acquisition module, an identification module, and a transmission power adjustment module. Among them, the information acquisition module can be used to obtain sensor information or image information. The identification module can be used to determine the interaction scene between the electronic device and the user in combination with the information collected by the information acquisition module. The transmission power adjustment module can be used to control the transmission power adjustment of the transmitting antenna to meet the reference SAR value corresponding to the current interaction scene based on the reference SAR value corresponding to the current interaction scene.

[0080] The application framework layer can also include a window manager, a resource manager, a view system, etc.

[0081] The window manager is used to manage window programs. The window manager can obtain the display screen size, determine whether there is a status bar, lock the screen, capture the screen, etc.

[0082] The resource manager provides various resources for applications, such as localized strings, icons, images, layout files, video files, and so on.

[0083] The view system includes visual controls, such as controls for displaying text, controls for displaying images, etc. The view system can be used to build applications. A display interface can be composed of one or more views. For example, a display interface including a text notification icon can include a view for displaying text and a view for displaying images.

[0084] The system library may include multiple functional modules, such as surface manager, media libraries, 3D graphics processing library (such as OpenGL ES), 2D graphics engine (such as SGL), etc.

[0085] The surface manager is used to manage the display subsystem and provide the fusion of 2D and 3D layers for multiple applications.

[0086] The media library supports playback and recording of a variety of commonly used audio and video formats, as well as static image files, etc. The media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.

[0087] OpenGL ES is used to implement 3D graphics drawing, image rendering, compositing, and layer processing.

[0088] SGL is a graphics engine for 2D graphics.

[0089] Android Runtime includes core libraries and virtual machines. Android Runtime is responsible for scheduling and management of the Android system.

[0090] The core library consists of two parts: one part is the function that needs to be called by the Java language, and the other part is the Android core library.

[0091] The application layer and the application framework layer run in a virtual machine. The virtual machine executes the Java files of the application layer and the application framework layer as binary files. The virtual machine is used to perform functions such as object life cycle management, stack management, thread management, security and exception management, and garbage collection.

[0092] The kernel layer is the layer between hardware and software. The kernel layer contains at least camera driver, display driver, sensor driver, etc.

[0093] It should be noted that the various functional modules included in the above software structure are only exemplary and do not constitute a specific limitation on the software architecture of the electronic device of this application. In other embodiments, the various functional modules included in the above software structure may be more or less, and this application does not limit this. Although the embodiment of this application is described using the Android system as an example, its basic principles are also applicable to electronic devices with other operating systems (such as Hongmeng system, IOS system, etc.).

[0094] The following is an introduction to the transmission power adjustment method provided in the embodiment of the present application in conjunction with the accompanying drawings.

[0095] The execution subject of the transmission power adjustment method provided in the embodiment of the present application can be an electronic device, or a functional module and / or functional entity in the electronic device that can implement the transmission power adjustment method. The transmission power adjustment method provided in the embodiment of the present application is introduced below by taking the electronic device executing the embodiment of the present application as an example.

[0096] See also Figure 4 , Figure 4 A flow chart of a method for adjusting transmission power provided in an embodiment of the present application. Figure 4 As shown, the method may include but is not limited to the following steps:

[0097] S401, acquiring sensor information or image information collected by a camera device.

[0098] In an embodiment of the present application, the electronic device may be provided with at least one sensor, and the electronic device may obtain sensor information (also referred to as sensor data) collected by the at least one sensor. The electronic device may also be provided with at least one camera device, and the at least one camera device may include a front camera device and a rear camera device. Accordingly, the electronic device may obtain image information collected by the at least one camera device.

[0099] In some embodiments, at least one sensor may include a breath awakening processing device, which may be used to collect breath data of a user (i.e., a user of the electronic device). Optionally, the breath awakening processing device may collect breath data periodically, or may collect breath data at preset time intervals.

[0100] In some embodiments, the electronic device may control the camera to collect image information when detecting that the display screen is in a light-on state. Optionally, the camera may collect image information periodically, or may collect image information at a preset time interval.

[0101] S402: Determine an interaction scenario between the electronic device and the object based on the sensor information or the image information.

[0102] In an embodiment of the present application, the electronic device can determine the interaction scene between the electronic device and the user based on the collected sensor information or image information. Among them, the interaction scene can be understood as the scene in which the user interacts with the electronic device. Because when the user interacts with the electronic device, the head, hands or other limbs are often in contact with the electronic device, in this case, the electronic device distinguishes the specific interaction scene between the user and the user based on the collected sensor information or image information, so as to distinguish the body parts of the user that are in contact with the electronic device, and then can reduce SAR in a targeted manner according to the standard requirements.

[0103] Optionally, the interaction scenario between the electronic device and the user object can be a voice call scenario or an object gaze scenario. Among them, the voice call scenario includes but is not limited to the scenario of making a phone call, sending voice messages, and satellite communication. The object gaze scenario can be understood as a scenario in which the user object gazes at the electronic device and the eyeball moves. In this scenario, the user object usually uses the electronic device to play games, watch videos, or browse the web.

[0104] In some embodiments, the electronic device can collect breath data of the user through the breath wake-up processing device, and then determine whether the interaction scene between the electronic device and the user is a voice call scene based on the collected breath data. Specifically, the electronic device can collect breath data within a preset distance range, and if the breath data meets the conditions, such as the volume of the breath data is greater than the volume threshold, the electronic device can determine that the interaction scene with the user is a voice call scene.

[0105] In some embodiments, the electronic device can collect eye image information of the user through a front camera device, and then determine whether the interaction scene between the electronic device and the user is an object gaze scene based on the collected eye image information. Specifically, the electronic device can obtain information such as the user's eye opening and closing state, eye movement position, eye movement speed, eye gaze angle, etc. based on the eye image information collected by the front camera device, and then determine whether the user is looking at the electronic device and there is a slight movement of the eye. If it is determined that the user is looking at the electronic device and the eye moves, it means that the interaction scene between the electronic device and the user is an object gaze scene.

[0106] In some embodiments, before determining the interaction scene with the object of use, the electronic device may first detect whether there is an object of use within a preset distance range. Optionally, the electronic device may determine whether there is an object of use within a preset distance range through a temperature sensor and a light wave sensor. For example, the electronic device may first collect infrared temperature through a temperature sensor. If the collected infrared temperature is within the preset temperature range, the light wave sensor may be triggered to collect infrared wavelength. If the collected infrared wavelength is within the preset wavelength range, it may be determined that there is an object of use within the preset distance range of the electronic device. In other words, the electronic device may double-verify whether there is an object of use near the electronic device through infrared temperature and infrared wavelength. Among them, the preset temperature range may be the temperature range radiated by the human body, for example, including 30°C~38°C; the preset wavelength range may be the wavelength range of infrared light waves scattered outward by the human body, for example, including 8um~14um. Optionally, the electronic device may also use a temperature sensor alone or a light wave sensor alone to determine whether there is an object of use within a preset distance range. For example, if the infrared temperature collected by the electronic device using a temperature sensor is within the temperature range radiated by the human body, it may be determined that there is an object of use within the preset distance range of the electronic device. The embodiments of the present application are not limited to this.

[0107] S403: Determine a reference SAR value corresponding to the interaction scenario from the reference SAR value set.

[0108] In the embodiment of the present application, after the electronic device determines the interaction scene with the user, it can determine the reference SAR value corresponding to the interaction scene from the reference SAR value set. The reference SAR value set may include the standard SAR values ​​specified in each region (as shown in Table 1 above). Since the reference SAR value set may include reference SAR values ​​corresponding to different body parts, and the interaction scenes are different, the body parts of the user contacting the electronic device are different. Through the interaction scene, the body part of the user contacting the electronic device can be inferred, and then the reference SAR value corresponding to the body part can be queried from the reference SAR value set.

[0109] For example, when the interaction scenario between the electronic device and the user is a voice call scenario, it can be inferred that the user's head and hands are in contact with the electronic device, so the reference SAR value corresponding to the head in the reference SAR value set (such as the reference SAR value corresponding to the head specified by CE in Table 1 is 2.0 W / kg, or the reference SAR value corresponding to the head specified by ISED / FCC is 1.6 W / kg) is determined as the reference SAR value corresponding to the voice call scenario, or the reference SAR value corresponding to the hand in the reference SAR value set (such as the reference SAR value corresponding to the hand specified by IESD in Table 1 is 4.0 W / kg) is determined as the reference SAR value corresponding to the voice call scenario. For another example, when the interaction scenario between the electronic device and the user is an object gaze scenario, it can be inferred that the user's limbs (such as both hands) are in contact with the electronic device, so the reference SAR value corresponding to the limbs in the reference SAR value set (such as the reference SAR value corresponding to the limbs specified by ANFR / ISED / FCC in Table 1 is 4.0 W / kg) is determined as the reference SAR value corresponding to the object gaze scenario.

[0110] In some embodiments, for a voice call scenario, since both the head and the hand of the user may be in contact with the electronic device, the electronic device may select a lower SAR value from the reference SAR values ​​corresponding to the head or the hand as the reference SAR value corresponding to the voice call scenario. For example, when the reference SAR value corresponding to the head is less than the reference SAR value corresponding to the hand, the reference SAR value corresponding to the voice call scenario may be determined to be the reference SAR value corresponding to the head; when the reference SAR value corresponding to the hand is less than the reference SAR value corresponding to the head, the reference SAR value corresponding to the voice call scenario may be determined to be the reference SAR value corresponding to the hand.

[0111] In some embodiments, when the electronic device detects that there is a user within a preset distance range, it can first determine the reference SAR value corresponding to the user's body based on the distance between the electronic device and the user, and then determine the reference SAR value corresponding to the interaction scene between the electronic device and the user after determining that there is an interaction between the electronic device and the user. For example, when the electronic device detects that there is a user within a preset distance range, assuming that the distance between the electronic device and the user is 5mm, then from Table 1, it can be determined that the reference SAR value corresponding to the body at a distance of 5mm is 2.0 W / kg. If the subsequent electronic device detects that the user continues to approach and determines that the interaction scene with the user is a voice call scene, the reference SAR value corresponding to the head in Table 1 can be determined to be a reference SAR value corresponding to the voice interaction scene, such as 1.6 W / kg. That is, in this case, the electronic device can first use 2.0 W / kg as the reference SAR value, and then use 1.6 W / kg as the reference SAR value when the interaction scene between the electronic device and the user is a voice call scene. In this way, the SAR value of the electronic device can be dynamically adjusted to ensure that the communication performance of the electronic device is not affected as much as possible while ensuring that the SAR value of the electronic device does not exceed the standard.

[0112] S404: Determine a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value based on the reference SAR value and the current SAR value.

[0113] In the embodiment of the present application, after the electronic device determines the reference SAR value, it can determine the first adjusted SAR value that needs to be adjusted and the adjusted power amount corresponding to the first adjusted SAR value based on the reference SAR value and the current SAR value. Here, the adjusted power amount corresponding to the first adjusted SAR value can be understood as the amount of power that the transmitting antenna needs to reduce when the SAR value of the electronic device drops from the current SAR value to the reference SAR value.

[0114] S405: Adjust the transmit power of the transmit antenna from a first transmit power to a second transmit power based on the adjusted power amount corresponding to the first adjusted SAR value.

[0115] In the embodiment of the present application, after the electronic device determines the adjusted power amount corresponding to the first adjusted SAR value, it can control the transmit power of the transmit antenna to be adjusted from the first transmit power to the second transmit power, so as to achieve the purpose of reducing the SAR value. The first transmit power can be understood as the transmit power of the transmit antenna before the electronic device is reduced to the reference SAR value.

[0116] In some embodiments, the electronic device may determine the first transmission power in a manner that, when the electronic device detects that there is a user object within a preset distance range, based on the distance between the electronic device and the user object, first determine the second adjusted SAR value and the adjusted power amount corresponding to the second adjusted SAR value, and then adjust the transmission power of the transmitting antenna from the initial transmission power to the first transmission power based on the adjusted power amount corresponding to the second adjusted SAR value. The initial transmission power may be understood as the transmission power of the transmitting antenna of the electronic device when the user object is not detected within the preset distance, and the initial transmission power is greater than the first transmission power. After the electronic device detects the user object, it means that the transmission power of the transmitting antenna needs to be reduced so that the SAR value meets the requirement. Since the closer the distance between the user object and the electronic device, the stricter the corresponding SAR value requirement, the second adjusted SAR value here may be negatively correlated with the distance, that is, the smaller the distance between the user object and the electronic device, the larger the corresponding second adjusted SAR value, and the larger the transmission power to be reduced by the transmitting antenna (that is, the adjusted power amount corresponding to the second adjusted SAR value). In this case, when the electronic device detects the presence of an object within a preset distance range, it can first reduce the transmission power of the transmitting antenna from the initial transmission power to the first transmission power to meet the body SAR value requirements, and then after determining the interaction scenario with the object, reduce the transmission power of the transmitting antenna from the first transmission power to the second transmission power to meet the SAR value requirements corresponding to the interaction scenario (such as head, hand or limbs).

[0117] By implementing the embodiments of the present application, the electronic device can adjust the transmit power of the transmit antenna based on different scenarios, thereby achieving different degrees of SAR reduction. This can minimize the impact on communication performance while meeting SAR value compliance, which is conducive to improving the flexibility of adjusting the transmit power.

[0118] Figure 4 The illustrated embodiment introduces the overall process of the transmission power adjustment method provided in the embodiment of the present application. The following is a detailed introduction to the transmission power adjustment method provided in the embodiment of the present application from the perspective of module processing and hardware circuit processing.

[0119] See also Figure 5A and Figure 5B , Figure 5A and Figure 5B A flowchart of another method for adjusting transmit power provided in an embodiment of the present application. Figure 5A Describes the process of adjusting the transmission power of an electronic device when detecting the presence of an object within a preset distance. Figure 5B Describes the interaction scenarios between electronic devices and objects. Figure 5A Continue to adjust the transmit power based on Figure 5Aand Figure 5B As shown, the electronic device may include a temperature sensor, a filter circuit, an amplifier circuit, a second trigger circuit, a light wave sensor, a processor, a breath awakening processing device, a camera device, a recognition module, and a first trigger circuit. The method may include but is not limited to the following steps:

[0120] S501, the temperature sensor collects infrared temperature.

[0121] The temperature sensor may be a thermoelectric element for collecting (or receiving) infrared temperature radiated by a human body.

[0122] S502: The temperature sensor generates a third signal in response to the infrared temperature being within a preset temperature range.

[0123] In an embodiment of the present application, when an object of use (i.e., a human body) is close to the electronic device, the temperature sensor can receive the temperature change of the object of use, so that the density of the charge on the surface of the temperature sensor will change. The changed charge can form an electric current, thereby generating a third signal.

[0124] S503: The temperature sensor transmits a third signal to the filter circuit.

[0125] Optionally, the filter circuit may be, for example, a Butterworth low-pass filter circuit, which helps to efficiently filter out noise and quickly extract a desired signal from a complex signal.

[0126] S504: The filtering circuit performs denoising on the third signal to obtain a fourth signal.

[0127] In the embodiment of the present application, after the filter circuit obtains the third signal, the noise in the third signal can be removed. The noise here can be understood as the signal corresponding to the infrared temperature radiated by non-human body. This is because the infrared temperature collected by the temperature sensor may contain the infrared temperature of other organisms besides the human body. By performing denoising processing through the filter circuit, part of the signal can be removed, and only the signal corresponding to the infrared temperature of the human body is retained.

[0128] S505: The filtering circuit transmits a fourth signal to the amplifying circuit.

[0129] Here, the amplifier circuit can be a non-inverting amplifier circuit, which can provide an amplified output signal in phase with the input signal. That is, after the fourth signal is input into the non-inverting amplifier circuit, an output signal in phase with the fourth signal and amplified compared to the fourth signal can be obtained.

[0130] S506: The amplifier circuit amplifies the fourth signal to obtain a fifth signal.

[0131] The fifth signal may be an amplified signal in phase with the fourth signal.

[0132] S507, the amplifying circuit transmits the fifth signal to the second trigger circuit.

[0133] The second trigger circuit may be, for example, a Schmitt trigger. A Schmitt trigger is a stable trigger circuit without hysteresis, which may have two threshold voltages, an upper trigger point and a lower trigger point. The input signal may cause a change in the output state only when it exceeds these two thresholds, which is beneficial for suppressing small amplitude noise in the input signal.

[0134] S508 , the second trigger circuit transmits a sixth signal to the optical wave sensor in response to the fifth signal.

[0135] After the fifth signal is input into the second trigger circuit, if the generated voltage exceeds the threshold voltage of the second trigger circuit, the second trigger circuit may output a sixth signal and transmit the sixth signal to the optical wave sensor. The optical wave sensor may be, for example, a passive infrared (PIR) sensor, which uses infrared rays to detect whether a human body is present in the space in which it is located.

[0136] S509: The optical wave sensor collects infrared wavelengths in response to the sixth signal.

[0137] After the optical wave sensor receives the sixth signal, if it is determined that the sixth signal exceeds a preset threshold voltage, it can trigger the collection of infrared wavelengths.

[0138] S510: In response to the infrared wavelength being within a preset wavelength range, the optical wave sensor determines that there is a user object within a preset distance range of the electronic device.

[0139] Since the body temperature of the human body is usually within a certain temperature range, the human body can scatter infrared rays within a preset wavelength range. Therefore, the optical wave sensor can detect the human body based on whether the collected infrared wavelength falls within the preset wavelength range.

[0140] S511, the optical wave sensor determines the distance between the electronic device and the object of use.

[0141] When the light wave sensor determines that there is an object of use near the electronic device, it can further measure the distance between the electronic device and the object of use. For example, the light wave sensor can determine the distance between the electronic device and the object of use based on the time of transmitting the measurement signal to the object of use and the time of receiving the signal fed back by the object of use. Taking the light wave sensor as a PIR sensor as an example, the PIR sensor can calculate the distance between the electronic device and the object of use by the following formula (1):

[0142] (1)

[0143] Wherein, d may represent the distance between the electronic device and the object of use; It can indicate the time when the signal is transmitted; It can indicate the moment when the signal is received; The speed of infrared light can be expressed as m / s; It can represent the refractive index of air, which is 1.

[0144] S512, the optical wave sensor transmits the distance between the electronic device and the object of use to the processor.

[0145] After the light wave sensor determines the distance between the electronic device and the object of use, it can transmit the distance to the processor.

[0146] S513: The processor determines a second adjusted SAR value and an adjusted power amount corresponding to the second adjusted SAR value based on the distance between the electronic device and the object of use.

[0147] In the embodiment of the present application, the distance between the electronic device and the user object may be negatively correlated with the second adjusted SAR value, or inversely proportional. That is, the shorter the distance between the electronic device and the user object, the larger the second adjusted SAR value, which means that the closer the user object is to the electronic device, the greater the SAR reduction required by the electronic device. Exemplarily, the relationship between the distance and the second adjusted SAR value can be expressed by the following formula (2):

[0148] (2)

[0149] in, may represent a second adjusted SAR value, and the SAR value adjusted based on the second adjusted SAR value may meet the requirement of a reference SAR value corresponding to a body specified in the standard; k may represent a proportionality coefficient; b may represent a compensation constant; here both k and b are parameters that may be adjusted according to actual needs.

[0150] S514: The processor adjusts the transmit power of the transmit antenna from the initial transmit power to the first transmit power based on the adjusted power amount corresponding to the second adjusted SAR value.

[0151] In the embodiment of the present application, the initial transmission power may be the transmission power of the transmitting antenna when the electronic device does not detect the approach of the user object, and the first transmission power is the transmission power obtained by reducing the initial transmission power by the adjustment power amount corresponding to the second adjustment SAR value. Based on the adjustment power amount corresponding to the second adjustment SAR value, the processor may call the software program to modify the corresponding configuration parameters to change the transmission power of the transmitting antenna, thereby achieving the purpose of reducing SAR.

[0152] The following takes the temperature sensor as a thermoelectric element, the filter circuit as a Butterworth low-pass filter circuit, the amplifier circuit as a non-inverting amplifier circuit, and the second trigger circuit as a Schmitt trigger as an example to introduce the process described in the above steps S501 to S514. For example, see Fig. 6A , Fig. 6A A schematic diagram of an electronic device adjusting transmission power based on a detected user object provided in an embodiment of the present application.

[0153] like Fig. 6A As shown, when the object of use is close to the electronic device, the thermoelectric element 602 can receive the infrared temperature change of the object of use, so that the surface charge density changes to form a current, thereby generating a third signal. The thermoelectric element 602 transmits the third signal to the Butterworth low-pass filter circuit 603. After the Butterworth low-pass filter circuit 603 removes the noise of the third signal, a fourth signal is obtained, and the fourth signal is transmitted to the non-inverting amplifier circuit 604. The non-inverting amplifier circuit 604 amplifies the fourth signal to obtain a fifth signal, and transmits the fifth signal to the Schmitt trigger 605. After the fifth signal is input into the Schmitt trigger, the Schmitt trigger 605 can be triggered to output the sixth signal. If the sixth signal exceeds the preset threshold voltage, it can continue to trigger the light wave sensor 606, and then the light wave sensor 606 can collect the infrared light waves belonging to the object of use that are transmitted by the filter. The light wave sensor 606 can measure the distance between the electronic device and the object of use, and transmit the distance to the processor 607. The processor 607 can determine the second adjusted SAR value and the adjusted power amount corresponding to the second adjusted SAR value based on the distance, and then modify the corresponding configuration parameters by calling the software program to control the transmit power of the transmit antenna to be adjusted from the initial transmit power to the first transmit power.

[0154] The above describes the process of adjusting the transmission power of an electronic device when it detects an object being used. Figure 5B The process of adjusting the transmission power of an electronic device based on the interaction scenario between the electronic device and the object of use after the electronic device detects the object of use is introduced.

[0155] S515, the breath awakening processing device collects breath data of the user.

[0156] In an embodiment of the present application, when the user approaches the electronic device and speaks to the electronic device, the electronic device can collect breath data of the user through a breath awakening processing device. Optionally, the breath awakening processing device can be composed of an inertial detection sensor, a breath sound collection sensor, and an analog-to-digital converter (AD converter). The inertial detection sensor can be used to detect the gesture of the user picking up the electronic device, the breath sound collection sensor can be used to detect the breath sound of the user, and the AD converter can be used to convert the collected breath sound analog signal into a digital signal to obtain breath data.

[0157] S516, the breath awakening processing device transmits the breath data to the recognition module.

[0158] Optionally, the recognition module may be a breath recognition module dedicated to recognizing breath data. The recognition module may recognize whether the breath data meets a condition, such as whether the volume is greater than a threshold, and further determine whether the electronic device is in voice mode.

[0159] S517, the camera device collects eye image information of the user.

[0160] The camera device here may be a front camera device, and the electronic device may control the front camera device to collect eye image information of the user when detecting that the display screen is in a bright screen state.

[0161] S518, the camera device transmits eye image information to the recognition module.

[0162] Optionally, the recognition module may be an image recognition module dedicated to recognizing eye image information, that is, the recognition module may be different from the breath recognition module for recognizing breath data. Here, the recognition module may recognize whether the user is looking at the electronic device based on the eye image information.

[0163] In the embodiment of the present application, the above steps S515 and S516 can be understood as steps for the electronic device to determine whether the user is using the electronic device for a voice call, and the above steps S517 and S518 can be understood as steps for the electronic device to determine whether the user is looking at the electronic device, and steps S515 and S517 can be executed in parallel.

[0164] S519, the recognition module determines the interaction scene between the electronic device and the user based on the breath data or the eye image information.

[0165] In some embodiments, the interaction scene between the electronic device and the user object can be a voice call scene or an object gaze scene. If the breath wake-up processing device collects breath data, it can transmit the breath data to the breath recognition module. The breath recognition module recognizes that the breath data meets the conditions and determines that the interaction scene between the electronic device and the user object is a voice call scene; if the front camera device collects eye image information, it can transmit the eye image information to the image recognition module. The image recognition module recognizes that the user object is looking at the electronic device and the eyeball is moving based on the eye image information, and determines that the interaction scene between the electronic device and the user object is an object gaze scene.

[0166] S520: The recognition module generates a first signal based on the interaction scenario.

[0167] In some embodiments, after the breath recognition module recognizes a voice call scene, it can generate an electric current to generate a first signal; or, after the image recognition module recognizes a subject's gaze scene, it can generate an electric current to generate a first signal.

[0168] S521, the identification module transmits a first signal to the first trigger circuit.

[0169] The first trigger circuit may be a Schmitt trigger. For a voice call scenario, the breath recognition module may transmit a first signal to a Schmitt trigger corresponding to the breath recognition module; for an object gaze scenario, the image recognition module may transmit a first signal to a Schmitt trigger corresponding to the image recognition module. Optionally, the Schmitt trigger corresponding to the breath recognition module may be different from the Schmitt trigger corresponding to the image recognition module.

[0170] S522: The first trigger circuit transmits a second signal to the processor in response to the first signal.

[0171] In some embodiments, for a voice call scenario, after the first signal is input into the Schmitt trigger corresponding to the breath recognition module, if the voltage generated exceeds the threshold voltage of the Schmitt trigger corresponding to the breath recognition module, the Schmitt trigger corresponding to the breath recognition module may output a second signal and transmit the second signal to the processor. For an object gaze scenario, after the first signal is input into the Schmitt trigger corresponding to the image recognition module, if the voltage generated exceeds the threshold voltage of the Schmitt trigger corresponding to the image recognition module, the Schmitt trigger corresponding to the image recognition module may output a second signal and transmit the second signal to the processor.

[0172] S523: The processor determines, in response to the second signal, a reference SAR value corresponding to the interaction scenario from a reference SAR value set.

[0173] In some embodiments, for a voice call scene, the processor can determine a reference SAR value corresponding to the voice call scene from a reference SAR value set in response to a second signal transmitted by a Schmitt trigger corresponding to the breath recognition module. For an object gaze scene, the processor can determine a reference SAR value corresponding to the object gaze scene from a reference SAR value set in response to a second signal transmitted by a Schmitt trigger corresponding to the image recognition module.

[0174] Optionally, the reference SAR value set may include reference SAR values ​​corresponding to different body parts. The reference SAR value corresponding to a voice call scenario may be, for example, a reference SAR value corresponding to a head or a hand, and the reference SAR value corresponding to an object gaze scenario may be a reference SAR value corresponding to limbs.

[0175] S524: The processor determines a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value based on the reference SAR value and the current SAR value.

[0176] In the above steps S501 to S514, after the electronic device detects the user object, it determines the second adjusted SAR value so that the SAR value of the electronic device can meet the requirements of the reference SAR value corresponding to the body specified in the standard. However, since the requirements for the reference SAR corresponding to the head, hands, and limbs in the standard are often more stringent than the requirements for the reference SAR value corresponding to the body, it is necessary to determine the first adjusted SAR value based on the reference SAR value corresponding to the specific interaction scenario so that the SAR value of the electronic device can comply with the regulations in the specific interaction scenario. In other words, after the electronic device reduces the SAR based on the second adjusted SAR value, it further reduces the SAR based on the first adjusted SAR value. For example, taking the interaction scenario as a voice call scenario, the total adjusted SAR value of the electronic device can be expressed by the following formula (3):

[0177] (3)

[0178] in, It can indicate the total adjusted SAR value of the electronic device; It can represent the second adjusted SAR value, It can represent the first adjusted SAR value in the voice call scenario.

[0179] Taking the interactive scene as an example, the total SAR value adjusted by the electronic device can be expressed by the following formula (4):

[0180] (4)

[0181] in, It can represent the first adjusted SAR value in the object gaze scene.

[0182] S525: The processor adjusts the transmit power of the transmit antenna from the first transmit power to the second transmit power based on the adjusted power amount corresponding to the first adjusted SAR value.

[0183] The implementation process of step S525 is similar to that of the above-mentioned step S405, and reference may be made to the relevant description in step S405. The difference is that step S405 is executed by the electronic device, while step S525 is executed by the processor in the electronic device, which will not be repeated here.

[0184] The process described in the above steps S515 to S525 is introduced below with two examples.

[0185] Example 1: Take the interactive scenario as a voice call scenario, see Figure 6B , Figure 6B A schematic diagram of an electronic device adjusting the transmission power based on a voice call scenario provided in an embodiment of the present application. Figure 6B As shown, when the user uses the electronic device to make a voice call, the breath wake-up processing device 611 can collect the breath data of the user and transmit the breath data to the breath recognition module 612. Based on the breath data, the breath recognition module 612 determines that the interaction scene is a voice call scene, generates a current, generates a first signal, and transmits the first signal to the Schmitt trigger 613. The changing current forms a voltage, and the voltage exceeds the threshold voltage of the Schmitt trigger 613, triggering the Schmitt trigger 613 to transmit a second signal to the processor 614. In response to the second signal, the processor 614 determines the reference SAR value corresponding to the voice call scene. Then, based on the reference SAR value and the current SAR value corresponding to the voice call scene, the first adjusted SAR value and the adjusted power amount corresponding to the first adjusted SAR value are determined. Finally, the corresponding configuration parameters can be modified by calling the software program to control the transmit power of the transmitting antenna to be adjusted from the first transmit power to the second transmit power.

[0186] Example 2, taking the object gaze scene as an example, see Figure 6C , Figure 6C A schematic diagram of an electronic device adjusting the transmission power based on an object gaze scene provided in an embodiment of the present application. Figure 6CAs shown, when the user holds the electronic device and looks at the electronic device, the front camera device 621 can collect the eye image information of the user and transmit the eye image information to the image recognition module 622. Based on the eye image information, the image recognition module 622 determines that the interaction scene is the object gaze scene, generates a current, generates a first signal, and transmits the first signal to the Schmitt trigger 623. The changing current forms a voltage, and the voltage exceeds the threshold voltage of the Schmitt trigger 623, triggering the Schmitt trigger 623 to transmit a second signal to the processor 624. The processor 624 determines the reference SAR value corresponding to the object gaze scene in response to the second signal. Then, based on the reference SAR value and the current SAR value corresponding to the object gaze scene, the first adjustment SAR value and the adjustment power amount corresponding to the first adjustment SAR value are determined. Finally, the corresponding configuration parameters can be modified by calling the software program to control the transmission power of the transmitting antenna to be adjusted from the first transmission power to the second transmission power.

[0187] In some embodiments, the transmit power adjustment method provided in the embodiments of the present application can also be summarized as follows: Figure 7 See the process shown in Figure 7 , Figure 7 A flowchart of another method for adjusting transmission power provided in an embodiment of the present application is shown below. Figure 7 As shown, the method may include but is not limited to the following steps:

[0188] S701, determining whether the light wave sensor detects a user.

[0189] When the user object approaches the electronic device, the light wave sensor can detect the user object.

[0190] S702: Do not adjust the transmit power of the transmit antenna.

[0191] If the optical wave sensor does not detect that the object is approaching, it means that the transmission power of the transmitting antenna does not need to be adjusted, that is, SAR reduction does not need to be performed.

[0192] S703: Determine the distance between the electronic device and the user.

[0193] If the light wave sensor detects that the object is approaching, it means that the transmission power of the transmitting antenna needs to be adjusted. In this case, the distance between the electronic device and the object can be determined by the light wave sensor.

[0194] S704: Determine a second adjusted SAR value and an adjusted power amount corresponding to the second adjusted SAR value based on the distance between the electronic device and the user object.

[0195] S705: Adjust the transmit power of the transmit antenna from the initial transmit power to the first transmit power based on the adjusted power amount corresponding to the second adjusted SAR value.

[0196] The specific implementation process of step S704 and step S705 can refer to the relevant description in the above step S513 and step S514, which will not be repeated here.

[0197] S706: Determine whether the front camera device has captured eye image information.

[0198] When the electronic device is in the screen-on state, the eye image information of the user can be collected through the front camera device. If the electronic device collects the eye image information through the front device device, it can further determine whether the user is looking at the electronic device and whether the eyeball is moving.

[0199] S707: Determine, based on the eye image information, that the interaction scene between the electronic device and the user object is an object gaze scene.

[0200] Based on the eye image information, the electronic device recognizes that the user is looking at the electronic device and the eyeball is moving, and can determine that the interaction scene between the electronic device and the user is an object looking scene. In this scene, the user usually uses the electronic device to play games, watch videos, or browse the web.

[0201] S708: Determine a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value based on a reference SAR value corresponding to the object's gaze scene.

[0202] Here, the reference SAR value corresponding to the object gaze scene may be the reference SAR value corresponding to the limbs. In the object gaze scene, after the electronic device reduces the transmission power based on the adjusted power amount corresponding to the second adjusted SAR value, it further reduces the transmission power based on the adjusted power amount corresponding to the first adjusted SAR value, so that the SAR value of the electronic device meets the reference SAR values ​​corresponding to the limbs.

[0203] S709: Adjust the transmit power of the transmit antenna from the first transmit power to the second transmit power based on the adjusted power amount corresponding to the first adjusted SAR value.

[0204] The specific implementation process of step S709 can refer to the relevant description in the above step S525, which will not be repeated here.

[0205] S710, determining whether the breath awakening processing device has collected breath data.

[0206] When the user uses the electronic device to make a voice call, the electronic device can collect the user's breath data through the breath awakening processing device.

[0207] S711, based on the breath data, determining that the interaction scenario between the electronic device and the user object is a voice call scenario.

[0208] The electronic device determines that the collected breath data meets the conditions, such as the volume is greater than a threshold, and can determine that the interaction scenario between the electronic device and the user object is a voice call scenario.

[0209] S712: Determine a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value based on a reference SAR value corresponding to a voice call scenario.

[0210] Here, the reference SAR value corresponding to the voice call scenario may be a reference SAR value corresponding to the head or the hand. In the voice call scenario, after the electronic device reduces the transmit power based on the adjusted power amount corresponding to the second adjusted SAR value, it further reduces the transmit power based on the adjusted power amount corresponding to the first adjusted SAR value, so that the SAR value of the electronic device meets the reference SAR value corresponding to the head or the hand.

[0211] S713: Adjust the transmit power of the transmit antenna from the first transmit power to the second transmit power based on the adjusted power amount corresponding to the first adjusted SAR value.

[0212] The specific implementation process of step S713 can refer to the relevant description in the above step S525, which will not be repeated here.

[0213] In some embodiments, the positions of the light wave sensor, the breath awakening processing device, and the front camera device in the electronic device can be referred to Figure 8 The electronic device structure shown in FIG. Figure 8 As shown, the electronic device can be configured with two light wave sensors, namely light wave sensor 801 and light wave sensor 802. The two light wave sensors can be located at the upper and lower parts of the electronic device respectively, which is conducive to all-round detection of whether there is a user approaching. In addition, the front camera device 803 can be located at the upper part of the electronic device, and the breath awakening processing device 804 can be located at the lower part of the electronic device, so as to more accurately collect the eye image information or breath data of the user. It can be understood that Figure 8 The module positions shown are merely exemplary and do not constitute a limitation to the present application.

[0214] In some embodiments, the electronic device may display a transmission power adjustment interface to more intuitively show the result of adjusting the transmission power to the user. Optionally, the transmission power adjustment interface may include one or more of the following: distance information, power information, scene information, and status information. Among them, the distance information may indicate the distance between the electronic device and the user; the power information may indicate the adjustment power amount of the transmission power of the transmitting antenna; the scene information may indicate the interaction scene between the electronic device and the user; the status information may indicate the status of each sensor, such as in a voice call scenario, the status information may indicate that the breath wake-up processing device is in the on state.

[0215] For example, see Fig. 9 , Fig. 9 A schematic diagram of a transmission power adjustment interface provided in an embodiment of the present application. Fig. 9 As shown, the transmit power adjustment interface 90 may include distance information 901, power information 902, scene information 903, and sensor information 904. In addition, the transmit power adjustment interface 90 may also include object detection prompt information 905 and risk prompt information 906. The object detection prompt information 905 may be used to prompt whether there is a human body approaching, and the risk prompt information 906 may be used to prompt that the SAR value of the electronic device is compliant.

[0216] In an embodiment of the present application, the electronic device can, when detecting the use object, first reduce the transmission power from the initial transmission power to the first transmission power. Then, after determining the interaction scenario with the use object, the transmission power is reduced from the first transmission power to the second transmission power based on the interaction scenario. In this way, the SAR value requirements for different parts of the body specified in the international standards are more comprehensively considered, which is conducive to improving the flexibility of adjusting the transmission power, and while ensuring the compliance of the SAR value of the electronic device, the communication performance of the electronic device is guaranteed. In addition, the embodiment of the present application realizes the detection of different scenes through temperature sensors, light wave sensors, breath awakening processing devices, camera devices, etc., thereby replacing traditional proximity sensors, which can meet the requirements for the duration of sensor step intervals to be added in the next generation of standards.

[0217] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in this application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integration. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk Solid State Disk), etc.

[0218] It should be noted that, for the above-mentioned various method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0219] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0220] The modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0221] A person of ordinary skill in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing the relevant hardware through a program, and the program may be stored in a computer-readable storage medium, which may include a flash drive, ROM, RAM, a magnetic disk or an optical disk, etc.

[0222] The above disclosure is only a preferred embodiment of the present application, which is only a part of the embodiments of the present application and cannot be used to limit the scope of rights of the present application.

Claims

1. A method for adjusting transmission power, characterized in that: The method is applied to an electronic device, and the method comprises: Based on the collected infrared temperature and / or infrared wavelength, determining that a user object exists within a preset distance range of the electronic device; Based on the distance between the electronic device and the object of use, adjusting the transmission power of the transmitting antenna from the initial transmission power to a first transmission power; the first transmission power is less than the initial transmission power; Determining an interaction scenario between the electronic device and the user based on the collected breath data or eye image information; Determining a reference SAR value corresponding to the interaction scenario from a reference SAR value set; Determine, based on the reference SAR value and the current SAR value, a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value; Based on the adjusted power amount corresponding to the first adjusted SAR value, the first transmit power is adjusted to a second transmit power; the second transmit power is less than the first transmit power.

2. The method according to claim 1, characterized in that The adjusting the transmission power of the transmitting antenna from the initial transmission power to the first transmission power based on the distance between the electronic device and the object of use includes: Determining a second adjusted SAR value and an adjusted power amount corresponding to the second adjusted SAR value based on a distance between the electronic device and the user object; the distance is negatively correlated with the second adjusted SAR value; Based on the adjusted power amount corresponding to the second adjusted SAR value, the transmit power of the transmit antenna is adjusted from the initial transmit power to the first transmit power; the first transmit power is less than the initial transmit power.

3. The method according to claim 1 or 2, characterized in that The interaction scenario is a voice call scenario or an object gaze scenario.

4. The method according to claim 3, characterized in that The reference SAR value set includes reference SAR values ​​corresponding to different body parts of the subject.

5. The method according to claim 4, characterized in that The determining, from a reference SAR value set, a reference SAR value corresponding to the interaction scenario includes: Determine a reference SAR value corresponding to the voice call scenario from a reference SAR value corresponding to the head or a reference SAR value corresponding to the hand; or, A reference SAR value corresponding to the scene that the object is gazing at is determined from the reference SAR values ​​corresponding to the limbs.

6. The method according to claim 5, characterized in that The determining, from a reference SAR value corresponding to the head or a reference SAR value corresponding to the hand, a reference SAR value corresponding to the voice call scenario includes: In response to the reference SAR value corresponding to the head being smaller than the reference SAR value corresponding to the hand, determining that the reference SAR value corresponding to the voice call scenario is the reference SAR value corresponding to the head; or, In response to the reference SAR value corresponding to the hand being less than the reference SAR value corresponding to the head, the reference SAR value corresponding to the voice call scenario is determined to be the reference SAR value corresponding to the hand.

7. The method according to any one of claims 1 or 2, characterized in that: The method further comprises: Display a transmission power adjustment interface; the transmission power adjustment interface includes one or more of the following: distance information, power information, scene information, and status information; the distance information indicates the distance between the electronic device and the object of use, the power information indicates the adjustment power amount of the transmission power of the transmitting antenna, the scene information indicates the interaction scene between the electronic device and the object of use, and the status information indicates the status of each sensor.

8. An electronic device, characterized in that: The electronic device comprises: an optical wave sensor, an identification module, a first trigger circuit, and a processor; The optical wave sensor is used to determine the distance between the electronic device and the object in response to the presence of the object within a preset distance range of the electronic device, and transmit the distance to the processor; The processor is configured to determine, based on the distance, a second adjusted SAR value and an adjusted power amount corresponding to the second adjusted SAR value; based on the adjusted power amount corresponding to the second adjusted SAR value, adjust the transmit power of the transmit antenna from an initial transmit power to a first transmit power; the distance is negatively correlated with the second adjusted SAR value; the first transmit power is less than the initial transmit power; The recognition module is configured to determine an interaction scenario between the electronic device and the user based on the collected breath data or eye image information; based on the interaction scenario, generate a first signal and transmit the first signal to the first trigger circuit; The first trigger circuit is used to transmit a second signal to the processor in response to the first signal; The processor is also used to determine, in response to the second signal, a reference SAR value corresponding to the interaction scenario from a reference SAR value set; determine a first adjusted SAR value and an adjusted power amount corresponding to the first adjusted SAR value based on the reference SAR value and the current SAR value; and adjust the first transmit power to a second transmit power based on the adjusted power amount corresponding to the first adjusted SAR value, wherein the second transmit power is less than the first transmit power.

9. The electronic device according to claim 8, characterized in that: The electronic device further includes a temperature sensor, a filter circuit, an amplifier circuit, and a second trigger circuit; The temperature sensor is used to collect infrared temperature; in response to the infrared temperature being within a preset temperature range, generate a third signal and transmit the third signal to the filter circuit; The filtering circuit is used to perform denoising on the third signal to obtain a fourth signal and transmit the fourth signal to the amplifying circuit; The amplifier circuit is used to amplify the fourth signal to obtain a fifth signal and transmit the fifth signal to the second trigger circuit; The second trigger circuit is used to transmit a sixth signal to the optical wave sensor in response to the fifth signal; The optical wave sensor is further configured to collect an infrared wavelength in response to the sixth signal; and determine that a user object exists within a preset distance range of the electronic device in response to the infrared wavelength being within a preset wavelength range.

10. The electronic device according to claim 8 or 9, characterized in that: The interaction scenario is a voice call scenario or an object gaze scenario.

11. An electronic device, characterized in that: It includes a memory and one or more processors; the memory is coupled to the one or more processors and is used to store a computer program, and the computer program includes program instructions; the one or more processors call the program instructions so that the electronic device executes the method as described in any one of claims 1-7.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

13. A chip system, characterized in that: The chip system is coupled to a memory, and the chip system is used to read and execute a computer program stored in the memory to implement the method according to any one of claims 1 to 7.

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