CN113014284A - Transmission power adjusting method, device, terminal equipment and readable storage medium - Google Patents
Transmission power adjusting method, device, terminal equipment and readable storage medium Download PDFInfo
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- CN113014284A CN113014284A CN201911315162.3A CN201911315162A CN113014284A CN 113014284 A CN113014284 A CN 113014284A CN 201911315162 A CN201911315162 A CN 201911315162A CN 113014284 A CN113014284 A CN 113014284A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
- H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application provides a method and a device for adjusting transmission power, terminal equipment and a readable storage medium, and relates to the technical field of communication. The terminal device stores the corresponding relation between the moving speed of the terminal device when the terminal device is close to the human body and the change rate of the capacitance value between the terminal device and the human body when the terminal device is close to the human body. The method comprises the steps of firstly obtaining the actual moving speed of the terminal equipment and the actual capacitance value change rate obtained through SAR sensor detection, and then judging whether the terminal equipment is close to a human body or not according to the corresponding relation between the moving speed and the capacitance value change rate, the actual moving speed and the actual capacitance value change rate. If yes, reducing the transmitting power of the antenna; if not, the transmitting power of the antenna is not reduced. Therefore, the transmitting power of the terminal equipment can meet the SAR standard, and the problem that the signal of the terminal equipment is poor due to the fact that the transmitting power is reduced when the terminal equipment is close to a non-human body medium is solved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for adjusting transmit power, a terminal device, and a readable storage medium.
Background
In order to give the user a better user experience, it is one of the indispensable conditions for the terminal device to have a faster and more stable signal. Therefore, the transmission power of the power amplifier of the terminal equipment antenna is larger, and the SAR (Specific Absorption Rate) value exceeds the standard. Wherein the SAR value represents the radiation influence of the transmitting power of the terminal equipment on the human body. Therefore, how to reduce the harm of the terminal device to the human body and ensure the signal quality of the terminal device has become a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present application is to provide a method and an apparatus for adjusting transmission power, a terminal device and a readable storage medium.
In order to achieve the above purpose, the embodiments of the present application employ the following technical solutions:
in a first aspect, an embodiment of the present application provides a transmission power adjustment method, which is applied to a terminal device, where the terminal device includes an SAR sensor, and a corresponding relationship between a moving speed of the terminal device when the terminal device approaches a human body and a change rate of a capacitance value between the terminal device and the terminal device when the terminal device approaches the human body is stored in the terminal device, and the method includes:
acquiring the actual moving speed of the terminal equipment and the actual capacitance value change rate detected by the SAR sensor;
judging whether the terminal equipment is close to the human body or not according to the corresponding relation between the moving speed and the change rate of the capacitance value, the actual moving speed and the actual change rate of the capacitance value;
if yes, reducing the transmitting power of the antenna;
if not, the transmitting power of the antenna is not reduced.
In an optional embodiment, the determining whether the terminal device is close to the human body according to the correspondence between the moving speed and the capacitance value change rate, the actual moving speed, and the actual capacitance value change rate includes:
obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate;
calculating a difference value between the target capacitance value change rate and the actual capacitance value change rate, and judging whether the difference value is within a preset difference value range;
if the difference value is within the preset difference value range, judging that the terminal equipment is close to the human body;
and if the difference is not within the preset difference range, judging that the terminal equipment is not close to the human body.
In an optional embodiment, the determining whether the terminal device is close to a human body according to the correspondence between the moving speed and the capacitance value change rate, the actual moving speed, and the actual capacitance value change rate further includes:
judging whether the terminal equipment is close to a medium or not according to the direction of the actual capacitance value change rate;
if the terminal equipment is not close to the medium, judging that the terminal equipment is not close to the human body;
and if the terminal equipment is close to the medium, executing a step of obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate.
In an optional embodiment, the terminal device further includes an inertial measurement unit, and the obtaining the actual moving speed of the terminal device and the actual capacitance value change rate detected by the SAR sensor includes:
calculating the actual moving speed according to the measurement data of the inertia measurement unit;
and calculating to obtain the actual capacitance value change rate according to the plurality of capacitance values obtained by the SAR sensor and the corresponding obtaining time.
In an alternative embodiment, the method further comprises:
and detecting and storing the corresponding relation between the moving speed of the terminal equipment when the terminal equipment is close to the human body and the change rate of the capacitance value of the terminal equipment when the terminal equipment is close to the human body in advance.
In a second aspect, an embodiment of the present application provides an emission power adjusting apparatus, which is applied to a terminal device, where the terminal device includes an SAR sensor, and a corresponding relationship between a moving speed of the terminal device when the terminal device is close to a human body and a change rate of a capacitance value between the terminal device and the terminal device when the terminal device is close to the human body is stored in the terminal device, the apparatus includes:
the obtaining module is used for obtaining the actual moving speed of the terminal equipment and the actual capacitance value change rate detected by the SAR sensor;
the judging module is used for judging whether the terminal equipment is close to a human body or not according to the corresponding relation between the moving speed and the change rate of the capacitance value, the actual moving speed and the actual change rate of the capacitance value;
the adjusting module is used for reducing the transmitting power of the antenna when the antenna is in the positive state;
and the adjusting module is also used for not reducing the transmitting power of the antenna when the antenna is not used for transmitting the data.
In an optional embodiment, the determining module is specifically configured to:
obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate;
calculating a difference value between the target capacitance value change rate and the actual capacitance value change rate, and judging whether the difference value is within a preset difference value range;
if the difference value is within the preset difference value range, judging that the terminal equipment is close to the human body;
and if the difference is not within the preset difference range, judging that the terminal equipment is not close to the human body.
In an optional implementation manner, the determining module is further specifically configured to:
judging whether the terminal equipment is close to a medium or not according to the direction of the actual capacitance value change rate;
if the terminal equipment is not close to the medium, judging that the terminal equipment is not close to the human body;
and if the terminal equipment is close to the medium, executing a step of obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate.
In a third aspect, an embodiment of the present application provides a terminal device, including a processor and a memory, where the memory stores machine executable instructions that can be executed by the processor, and the processor can execute the machine executable instructions to implement the transmission power adjustment method described in any one of the foregoing embodiments.
In a fourth aspect, the present application provides a readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the transmission power adjustment method according to any one of the foregoing embodiments.
According to the transmission power adjusting method, the transmission power adjusting device, the terminal device and the readable storage medium, the actual moving speed of the terminal device and the actual capacitance value change rate obtained through detection of the SAR sensor are obtained firstly, and then whether the terminal device is close to the human body or not is judged according to the obtained actual moving speed and the actual capacitance value change rate, and the stored corresponding relation between the moving speed when the terminal device is close to the human body and the capacitance value change rate when the terminal device is close to the human body. If yes, reducing the transmitting power of the antenna; if not, the transmitting power of the antenna is not reduced. Therefore, whether the medium close to the terminal equipment is a human body or not can be judged according to the actual moving speed, the actual capacitance value change rate and the corresponding relation between the stored moving speed and the capacitance value change rate. When the mobile terminal is a human body, the transmitting power of the antenna is reduced so as to reduce the harm of the terminal equipment to the human body; when the terminal equipment is not a human body, the transmitting power of the antenna is not reduced, so that the problem of signal deterioration caused by reduction of the transmitting power of the antenna when the terminal equipment is close to a non-human body medium is solved, and the user experience is improved.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic block diagram of a terminal device provided in an embodiment of the present application;
fig. 2 is a schematic flowchart of a transmit power adjustment method according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of the sub-steps included in step S120 of FIG. 2;
fig. 4 is a block diagram of a transmit power adjustment apparatus according to an embodiment of the present application.
Icon: 100-a terminal device; 110-a memory; 120-a processor; 130-a communication unit; 200-a transmission power adjustment device; 210-an obtaining module; 220-a judgment module; 230-adjustment module.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Before the inventor of the present application proposes the technical solution in the embodiment of the present application, in order to reduce the influence of the transmission power of the terminal device on the human body, a SAR sensor is generally disposed in the terminal device. The SAR sensor is a detection device which detects whether terminal equipment is close to a human body by utilizing capacitance induction. When a human body approaches the terminal device, the SAR sensor sends a notification message to the Modem, and after receiving the notification, the Modem end actively reduces the transmission Power of the antenna PA (Power Amplifier, PA), so that the SAR value of the terminal device is reduced to be within the standard, and the safety of the human body is ensured.
However, when the non-human body medium is close to the terminal device, the SAR sensor also sends a notification message to the Modem, so that the transmission power of the antenna is reduced, and the signal of the terminal device is affected. For example, when the terminal device is placed on a desktop, the transmission power of the terminal device antenna may be reduced. However, since the terminal device is not close to the human body at this time, it is not necessary to reduce the transmission power of the antenna.
The process of finding the defects of the above scheme is the result of the inventor after practice and careful study. Therefore, the discovery process of the above-mentioned problems and the solution proposed by the embodiments of the present application in the following description should be the contribution of the inventor to the present application in the course of the present application.
Referring to fig. 1, fig. 1 is a block diagram of a terminal device 100 according to an embodiment of the present disclosure. The terminal device 100 may be, but is not limited to, a smart phone, a tablet computer, etc. The terminal device 100 may include a memory 110, a processor 120, and a communication unit 130. The elements of the memory 110, the processor 120 and the communication unit 130 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines.
The memory 110 is used to store programs or data. The Memory 110 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like.
The processor 120 is used to read/write data or programs stored in the memory 110 and perform corresponding functions. For example, the memory 110 stores therein the transmission power adjustment apparatus 200, and the transmission power adjustment apparatus 200 includes at least one software functional module which can be stored in the memory 110 in the form of software or firmware (firmware). The processor 120 executes various functional applications and data processing by running software programs and modules stored in the memory 110, such as the transmission power adjustment apparatus 200 in the embodiment of the present application, so as to implement the transmission power adjustment method in the embodiment of the present application.
The communication unit 130 is used to establish a communication connection between the terminal device 100 and another communication terminal through a network, and to transceive data through the network.
It should be understood that the structure shown in fig. 1 is only a schematic structural diagram of the terminal device 100, and the terminal device 100 may also include more or less components than those shown in fig. 1, or have a different configuration than that shown in fig. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for adjusting transmit power according to an embodiment of the present disclosure. The method is applied to the terminal device 100, the terminal device 100 includes an SAR (Specific Absorption Rate) sensor, the terminal device 100 further stores a corresponding relationship between a moving speed of the terminal device 100 when approaching a human body and a capacitance value, and the capacitance value is a capacitance value between the terminal device 100 and the human body when approaching the human body. The following describes a specific procedure of the transmit power adjustment method in detail. The method includes steps S110 to S140.
Step S110, obtaining an actual moving speed of the terminal device 100 and an actual capacitance value change rate detected by the SAR sensor.
Step S120, determining whether the terminal device 100 is close to the human body according to the correspondence between the moving speed and the capacitance value change rate, the actual moving speed, and the actual capacitance value change rate.
If yes, go to step S130; if not, step S140 is performed.
Step S130, reducing the transmitting power of the antenna.
Step S140, the transmission power of the antenna is not reduced.
In the embodiment of the present application, the actual moving speed of the terminal device 100 is obtained first, and the actual capacitance value change rate between the terminal device 100 and the medium, which is obtained through detection by the SAR sensor, is obtained. Then, whether the terminal device 100 is close to the human body medium is judged according to the pre-stored correspondence between the moving speed and the capacitance value change rate when the terminal device 100 is close to the human body, and the actual moving speed and the actual capacitance value change rate. If so, the transmission power of the antenna of the terminal device 100 is reduced to avoid the harm to the human body due to the excessively high antenna transmission power, so that the transmission power of the terminal device 100 meets the SAR standard. If not, the transmission power of the antenna of the terminal device 100 does not need to be reduced, thereby ensuring the signal quality of the terminal device 100.
Therefore, whether the terminal device 100 is close to the human body medium or not can be identified, whether the transmitting power of the antenna is reduced or not is selected according to the identification result, the situation that the terminal device 100 reduces the transmitting power of the antenna when a non-human body medium is close to the terminal device 100 is avoided, the terminal device 100 can keep larger transmitting power when the non-human body medium is not close to the human body medium, and the signal quality is ensured.
For example, if a person moves with the terminal device 100, it is possible to recognize whether the terminal device 100 is close to the head or away from the head. If the head of the person is close to the head of the person, the transmitting power of the antenna is reduced; if the antenna is far away from the head of a person and is close to other non-human body media, the transmitting power of the antenna does not need to be reduced.
Wherein, SAR is the electromagnetic wave energy absorption ratio of the mobile phone or the wireless product, which is defined as: under the action of the external electromagnetic field, an induction electromagnetic field is generated in the human body. Since various organs of the human body are lossy media, the electromagnetic field in the body will generate electric currents, resulting in absorption and dissipation of electromagnetic energy. SAR is commonly used in biological dosimetry to characterize this physical process. SAR means the electromagnetic power absorbed or consumed by a unit mass of human tissue, in W/kg. That is, SAR is a measure of the ratio of electromagnetic power absorbed or consumed by the human brain and human body. The SAR standards include safe radiation limits that do not produce harmful biological effects. The purpose of reducing the transmission power is to make the radiation value of the terminal device 100 not greater than the safe radiation limit value.
Optionally, in this embodiment, the terminal device 100 may further include an Inertial Measurement Unit (IMU). The inertial measurement unit may include a gravity sensor (G-sensor), a Gyro sensor (Gyro), and a geomagnetic sensor (M-sensor). The actual moving speed of the terminal device 100 can be calculated from the measurement data of the inertial measurement unit. Optionally, the actual capacitance value change rate may be calculated according to a plurality of capacitance values obtained by the SAR sensor and corresponding obtaining times.
Optionally, after obtaining the measurement data, the inertial measurement unit may process the measurement data to obtain the actual moving speed; the SAR sensor may also process the data based on the obtained capacitance value and the obtaining time to obtain the actual capacitance value change rate. Alternatively, after obtaining the data, the terminal device 100 processes the data to obtain the actual moving speed and the actual capacitance change rate.
Alternatively, in an implementation manner of this embodiment, after obtaining the measurement data of a plurality of inertial measurement units, curve fitting may be performed, and the actual moving speed may be obtained based on the fitted curve. And after a plurality of capacitance values and corresponding obtaining moments are obtained through the SAR sensor, obtaining the actual capacitance value change rate through curve fitting.
Optionally, in another implementation manner of this embodiment, the actual moving speed and the actual capacitance change rate are directly calculated based on the obtained data without curve fitting. For example, the capacitance value obtained later is subtracted from the capacitance value obtained earlier to obtain a difference, and then the actual capacitance value change rate is calculated based on the difference and the difference between the obtaining times corresponding to the two capacitance values. The actual capacitance change rate may indicate a change tendency of the capacitance, i.e., whether the capacitance is larger or smaller.
It is understood that the above-mentioned manners are only examples, and the actual moving speed of the terminal device 100 and the actual capacitance value change rate may be obtained in other manners.
In this embodiment, before step S110, the method may further include: the correspondence relationship between the moving speed of the terminal device 100 when approaching the human body and the rate of change in capacitance value between the terminal device 100 and the human body when approaching the human body is detected and stored in advance. When the terminal device 100 is a smart phone, the corresponding relationship may be stored in NV (Nonvolatile Random Access Memory) of the smart phone.
In the embodiment of the present embodiment, the manner of obtaining the moving speed and the capacitance change rate may be the same as or different from the manner of obtaining the actual moving speed and the actual capacitance change rate. Alternatively, in an implementation manner of this embodiment, the moving speed and the capacitance change rate are obtained in the same manner as the actual moving speed and the actual capacitance change rate are obtained.
After obtaining the actual moving speed and the actual capacitance value change rate, it can be determined whether the terminal device 100 is close to the human body in the following manner. Referring to fig. 3, fig. 3 is a flowchart illustrating sub-steps included in step S120 in fig. 2. Step S120 may include substeps S121 through substep S124.
And a substep S121 of obtaining a target capacitance value change rate corresponding to the actual moving speed according to the correspondence between the moving speed and the capacitance value change rate.
And a substep S122, calculating a difference between the target capacitance value change rate and the actual capacitance value change rate, and determining whether the difference is within a preset difference range.
If the difference value is within the preset difference value range, performing substep S123; if the difference is not within the preset difference range, the substep S124 is performed.
And a substep S123 of determining that the terminal device 100 is close to the human body.
And a substep S124 of determining that the terminal device 100 is not close to the human body.
In this embodiment, the form of the correspondence stored in the terminal device 100 may be, but is not limited to, a corresponding stored moving speed and a capacitance value change rate, a functional relationship between the moving speed and the capacitance value change rate, and the like. After the actual moving speed and the actual capacitance value change rate are obtained, a target capacitance value change rate corresponding to the actual moving speed can be obtained according to the actual moving speed, the corresponding relation between the moving speed and the capacitance value change rate. Wherein the target capacitance value change rate indicates a capacitance value change rate between the terminal device 100 and the human body when the terminal device 100 approaches the human body at the actual moving speed.
And then calculating to obtain a difference value between the target capacitance value change rate and the actual capacitance value change rate, and comparing the difference value with a preset difference value range. If the difference is within the preset difference range, it indicates that the difference between the actual capacitance change rate and the target capacitance change rate is not large, and it can be determined that the terminal device 100 is close to a human body. If the difference is not within the preset difference range, it indicates that the difference between the actual capacitance change rate and the target capacitance change rate is larger, and at this time, it may be determined that the terminal device 100 is not close to the human body medium.
Therefore, the type of the medium close to the terminal device 100 can be identified based on the actual moving speed and the actual capacitance value change rate, and the transmission power is reduced only when the close medium type is a human body, so that the problem that the signal quality is reduced when a non-human body medium is close to the terminal device 100 is solved, and the human body safety is ensured.
Optionally, the preset difference range may be set according to actual requirements. Different moving speeds can correspond to different preset difference value ranges, and can also correspond to the same preset difference value range. If the correspondence stored in the terminal device 100 is in the form of a one-to-one correspondence of the moving speed and the capacitance value change rate, and the target capacitance value change rate cannot be obtained according to the correspondence of the moving speed and the capacitance value change rate, it may be directly determined that the terminal device 100 is not close to the human body.
In this embodiment, the actual moving speed and the moving speed may be both vectors. The actual capacitance value change rate and the capacitance value change rate can be scalar quantities. To increase the determination speed, before the sub-step S121, it may be first determined whether the terminal device 100 is close to the medium according to the actual capacitance value change rate. When the terminal device 100 is close to the medium, the capacitance value of the capacitance between the terminal device 100 and the medium becomes large, and the rate of change of the capacitance value is greater than 0. Therefore, it is possible to determine whether the capacitance value of the capacitance between the terminal device 100 and the medium becomes large according to whether the actual capacitance value change rate is larger than 0, and further determine whether the terminal device 100 is close to the medium.
If the terminal device 100 is not close to the medium, it can be determined that the terminal device 100 is not close to the human body. If the terminal device 100 is close to the medium, the substep S121 may be performed again to determine whether the terminal device 100 is close to the human body based on the target capacitance value change rate.
It is understood that, according to the corresponding relationship between the moving speed and the capacitance value change rate, a target moving speed corresponding to the actual capacitance value change rate may also be obtained; then, it is determined whether the terminal device 100 is close to the human body based on the target moving speed and the actual moving speed. The specific determination method is similar to the determination method according to the target capacitance change rate, and is not described herein again.
Optionally, after determining that the terminal device 100 is close to the human body, the current transmission power of the terminal device 100 may be detected. If the current transmission power meets the SAR standard, the current transmission power may not be reduced any more, so as to avoid that the user cannot talk or use other functions through the terminal device 100 due to the excessively low transmission power.
Optionally, after determining that the terminal device 100 is not close to the human body, the current transmission power of the terminal device 100 may be detected. If the current transmission power is lower than the preset transmission power, the transmission power of the antenna of the terminal device 100 may be increased to ensure the signal quality. Wherein, the preset transmitting power can be set according to actual requirements.
In order to perform the corresponding steps in the above embodiments and various possible manners, an implementation manner of the transmission power adjustment apparatus 200 is given below, and optionally, the transmission power adjustment apparatus 200 may be functional software in the terminal device 100 shown in fig. 1. Further, referring to fig. 4, fig. 4 is a block diagram of a transmission power adjustment apparatus 200 according to an embodiment of the present disclosure. It should be noted that the basic principle and the generated technical effect of the transmission power adjustment apparatus 200 provided in the present embodiment are the same as those of the above embodiments, and for the sake of brief description, no part of the present embodiment is mentioned, and corresponding contents in the above embodiments may be referred to. The transmission power adjusting apparatus 200 may be applied to a terminal device 100, the terminal device 100 includes an electromagnetic absorption ratio SAR sensor, and the terminal device 100 stores therein a correspondence relationship between a moving speed of the terminal device 100 when approaching a human body and a capacitance value change rate of the terminal device 100 when approaching the human body. The transmission power adjusting apparatus 200 may include: an obtaining module 210, a determining module 220, and an adjusting module 230.
The obtaining module 210 is configured to obtain an actual moving speed of the terminal device 100 and an actual capacitance change rate detected by the SAR sensor. The determining module 220 is configured to determine whether the terminal device 100 is close to a human body according to the correspondence between the moving speed and the capacitance value change rate, the actual moving speed, and the actual capacitance value change rate. And an adjusting module 230, configured to, if yes, decrease the transmission power of the antenna. The adjusting module 230 is further configured to not decrease the transmitting power of the antenna if no.
Optionally, in this embodiment, the determining module 220 may be specifically configured to: obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate; calculating a difference value between the target capacitance value change rate and the actual capacitance value change rate, and judging whether the difference value is within a preset difference value range; if the difference value is within the preset difference value range, judging that the terminal equipment 100 is close to the human body; and if the difference is not within the preset difference range, judging that the terminal equipment 100 is not close to the human body.
Optionally, in this embodiment, the determining module 220 may be further specifically configured to: judging whether the terminal device 100 is close to a medium or not according to the direction of the actual capacitance value change rate; if the terminal device 100 is not close to the medium, judging that the terminal device 100 is not close to the human body; and if the terminal device 100 is close to the medium, executing a step of obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relationship between the moving speed and the capacitance value change rate.
Optionally, in this embodiment, the transmission power adjusting apparatus 200 may further include a relation saving module. The relationship storage module is configured to detect and store a correspondence relationship between a moving speed of the terminal device 100 when approaching a human body and a change rate of a capacitance value between the terminal device 100 and the human body when approaching the human body in advance.
Alternatively, the modules may be stored in the memory 110 shown in fig. 1 in the form of software or Firmware (Firmware) or be fixed in an Operating System (OS) of the terminal device 100, and may be executed by the processor 120 in fig. 1. Meanwhile, data, codes of programs, and the like required to execute the above-described modules may be stored in the memory 110.
An embodiment of the present application further provides a readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the method for adjusting transmission power.
In summary, the embodiments of the present application provide a method and an apparatus for adjusting transmit power, a terminal device, and a readable storage medium. The method comprises the steps of firstly obtaining the actual moving speed of the terminal equipment and the actual capacitance value change rate obtained through SAR sensor detection, and then judging whether the terminal equipment is close to the human body or not according to the obtained actual moving speed and the actual capacitance value change rate, and the stored corresponding relation between the moving speed of the terminal equipment when the terminal equipment is close to the human body and the capacitance value change rate of the terminal equipment when the terminal equipment is close to the human body. If yes, reducing the transmitting power of the antenna; if not, the transmitting power of the antenna is not reduced. Therefore, whether the medium close to the terminal equipment is a human body or not can be judged according to the actual moving speed, the actual capacitance value change rate and the corresponding relation between the stored moving speed and the capacitance value change rate. When the mobile terminal is a human body, the transmitting power of the antenna is reduced so as to reduce the harm of the terminal equipment to the human body; when the terminal equipment is not a human body, the transmitting power of the antenna is not reduced, so that the problem of signal deterioration caused by reduction of the transmitting power of the antenna when the terminal equipment is close to a non-human body medium is solved, and the user experience is improved.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A transmission power adjusting method is applied to a terminal device, the terminal device comprises an electromagnetic wave absorption ratio SAR sensor, the terminal device stores a corresponding relation between a moving speed when the terminal device approaches a human body and a capacitance value change rate between the terminal device and the human body, and the method comprises the following steps:
acquiring the actual moving speed of the terminal equipment and the actual capacitance value change rate detected by the SAR sensor;
judging whether the terminal equipment is close to the human body or not according to the corresponding relation between the moving speed and the change rate of the capacitance value, the actual moving speed and the actual change rate of the capacitance value;
if yes, reducing the transmitting power of the antenna;
if not, the transmitting power of the antenna is not reduced.
2. The method according to claim 1, wherein the determining whether the terminal device is close to the human body according to the correspondence between the moving speed and the capacitance value change rate, the actual moving speed, and the actual capacitance value change rate includes:
obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate;
calculating a difference value between the target capacitance value change rate and the actual capacitance value change rate, and judging whether the difference value is within a preset difference value range;
if the difference value is within the preset difference value range, judging that the terminal equipment is close to the human body;
and if the difference is not within the preset difference range, judging that the terminal equipment is not close to the human body.
3. The method according to claim 2, wherein the determining whether the terminal device is close to the human body according to the correspondence between the moving speed and the change rate of the capacitance value, the actual moving speed, and the change rate of the actual capacitance value further comprises:
judging whether the terminal equipment is close to a medium or not according to the actual capacitance value change rate;
if the terminal equipment is not close to the medium, judging that the terminal equipment is not close to the human body;
and if the terminal equipment is close to the medium, executing a step of obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate.
4. The method of claim 1, wherein the terminal device further comprises an inertial measurement unit, and the obtaining of the actual moving speed of the terminal device and the actual rate of change of the capacitance value detected by the SAR sensor comprises:
calculating the actual moving speed according to the measurement data of the inertia measurement unit;
and calculating to obtain the actual capacitance value change rate according to the plurality of capacitance values obtained by the SAR sensor and the corresponding obtaining time.
5. The method of claim 1, further comprising:
and detecting and storing the corresponding relation between the moving speed of the terminal equipment when the terminal equipment is close to the human body and the change rate of the capacitance value of the terminal equipment when the terminal equipment is close to the human body in advance.
6. An emission power adjusting apparatus, applied to a terminal device, the terminal device including an electromagnetic wave absorption ratio SAR sensor, the terminal device storing therein a correspondence between a moving speed of the terminal device when approaching a human body and a change rate of a capacitance value between the terminal device and the terminal device when approaching the human body, the apparatus comprising:
the obtaining module is used for obtaining the actual moving speed of the terminal equipment and the actual capacitance value change rate detected by the SAR sensor;
the judging module is used for judging whether the terminal equipment is close to a human body or not according to the corresponding relation between the moving speed and the change rate of the capacitance value, the actual moving speed and the actual change rate of the capacitance value;
the adjusting module is used for reducing the transmitting power of the antenna when the antenna is in the positive state;
and the adjusting module is also used for not reducing the transmitting power of the antenna when the antenna is not used for transmitting the data.
7. The apparatus of claim 6, wherein the determining module is specifically configured to:
obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate;
calculating a difference value between the target capacitance value change rate and the actual capacitance value change rate, and judging whether the difference value is within a preset difference value range;
if the difference value is within the preset difference value range, judging that the terminal equipment is close to the human body;
and if the difference is not within the preset difference range, judging that the terminal equipment is not close to the human body.
8. The apparatus of claim 7, wherein the determining module is further specifically configured to:
judging whether the terminal equipment is close to a medium or not according to the direction of the actual capacitance value change rate;
if the terminal equipment is not close to the medium, judging that the terminal equipment is not close to the human body;
and if the terminal equipment is close to the medium, executing a step of obtaining a target capacitance value change rate corresponding to the actual moving speed according to the corresponding relation between the moving speed and the capacitance value change rate.
9. A terminal device comprising a processor and a memory, the memory storing machine executable instructions executable by the processor to implement the transmit power adjustment method of any one of claims 1 to 5.
10. A readable storage medium having stored thereon a computer program, which, when being executed by a processor, carries out the transmit power adjustment method according to any one of claims 1-5.
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| CN201911315162.3A CN113014284B (en) | 2019-12-19 | 2019-12-19 | Transmission power adjusting method, device, terminal equipment and readable storage medium |
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