CN117631084A

CN117631084A - SAR failure detection method, electronic device and readable storage medium

Info

Publication number: CN117631084A
Application number: CN202311624453.7A
Authority: CN
Inventors: 请求不公布姓名; 廖志军; 王晨阳
Original assignee: Wuhan Xingji Meizu Technology Co ltd
Current assignee: Wuhan Xingji Meizu Technology Co ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-03-01

Abstract

The present disclosure provides a SAR failure detection method, an electronic device, and a readable storage medium. The SAR failure detection method according to the embodiment of the present disclosure comprises the following steps: detecting a first channel capacitance value corresponding to a first antenna channel of the electronic device; acquiring an initial capacitance value for a first antenna channel, wherein the initial capacitance value is a capacitance value of the first antenna channel under the condition that SAR does not fail; and determining whether the SAR of the first antenna channel fails based on a deviation between the first channel capacitance value and the initial capacitance value. By using the SAR failure detection method provided by the invention, whether the SAR sensor in the electronic device is in an effective state can be detected, and the electromagnetic radiation of the electronic device is ensured to be kept within a set range.

Description

SAR failure detection method, electronic device and readable storage medium

Technical Field

Embodiments of the present disclosure relate to a SAR failure detection method, an electronic device, and a readable storage medium.

Background

For electromagnetic radiation of an electronic device, a specific absorption ratio (Specific Absorption Rate, SAR) value may be used to represent the amount of radiation that an organism is allowed to absorb per unit kilogram, defined as the electromagnetic power absorbed or consumed by a unit mass of biological tissue, whereby the SAR value may characterize the effect of the radiation on the human body. The lower the SAR value, the less radiation is absorbed by the organism. In particular, one or more SAR sensors may be arranged in the electronic device for the antenna to detect if an organism is in proximity to the electronic device. If the SAR sensor detects a user's proximity, the electronic device will be caused to reduce the transmit power of the antenna.

Disclosure of Invention

The present disclosure relates to a SAR failure detection method, an electronic device, and a readable storage medium, which are capable of detecting whether a SAR sensor in the electronic device is in an active state.

According to an aspect of the present disclosure, there is provided a SAR failure detection method including: detecting a first channel capacitance value corresponding to a first antenna channel of the electronic device; acquiring an initial capacitance value for the first antenna channel, wherein the initial capacitance value is the capacitance value of the first antenna channel under the condition that SAR does not fail; and determining whether the SAR of the first antenna channel fails according to the deviation between the first channel capacitance value and the initial capacitance value.

According to some embodiments of the present disclosure, determining whether the SAR of the first antenna channel fails based on a deviation between the first channel capacitance value and the initial capacitance value comprises: obtaining a capacitance difference value based on the first channel capacitance value and the initial capacitance value, and comparing the capacitance difference value with a preset capacitance threshold value; and determining SAR failure of the first antenna channel if the capacitance difference is greater than a preset capacitance threshold.

According to some embodiments of the present disclosure, after determining whether the SAR of the first antenna channel fails according to the deviation between the first channel capacitance value and the initial capacitance value, the SAR failure detection method further comprises: in the case of SAR failure of the first antenna channel, the transmit signal power of the first antenna in the first antenna channel is set to a value at which the human body is approaching the scene.

According to some embodiments of the present disclosure, a first channel capacitance value corresponding to a first antenna channel of an electronic device is detected in response to detecting a trigger operation, wherein the SAR failure detection method further comprises: before the next detection triggering operation is detected, the transmitting signal power of the first antenna in the first antenna channel is always set to be a value when a human body approaches a scene.

According to some embodiments of the present disclosure, the initial capacitance value is detected by: before the electronic device leaves the factory, the capacitance value corresponding to the first antenna channel in the electronic device is detected by using a detection instrument and is used as the initial capacitance value of the first antenna channel.

According to some embodiments of the present disclosure, a first channel capacitance value corresponding to a first antenna channel of an electronic device is detected in response to detecting a trigger operation, wherein detecting the trigger operation includes restarting the electronic device.

According to some embodiments of the present disclosure, the SAR failure detection method further comprises: in the event that the first channel capacitance value of the first antenna channel is not detected, the transmit signal power corresponding to the first antenna channel is adjusted.

According to some embodiments of the present disclosure, the SAR failure detection method further comprises: and adjusting the transmitting signal power of all antenna channels corresponding to the SAR sensor connected with the first antenna under the condition that the first channel capacitance value of the first antenna channel cannot be detected.

According to some embodiments of the present disclosure, the preset capacitance threshold is set to be less than a minimum blocking capacitance value corresponding to the first antenna path.

According to some embodiments of the present disclosure, the preset capacitance threshold is set to a line fluctuation value that is greater than a channel capacitance value of the first antenna channel.

According to some embodiments of the present disclosure, in a case where the capacitance difference is smaller than a preset capacitance threshold, the SAR failure detection method further includes: detecting a second channel capacitance value corresponding to a first antenna channel of the electronic device; and adjusting a transmit signal power corresponding to the first antenna channel based on a deviation between the first channel capacitance value and the second channel capacitance value.

According to another aspect of the present disclosure, an electronic device is provided. An electronic device according to an embodiment of the present disclosure includes a processor, a SAR sensor, and one or more antennas connected to the SAR sensor, wherein the processor is configured to: controlling the SAR sensor to detect a first channel capacitance value corresponding to a first antenna channel, wherein the first antenna channel corresponds to a connection channel between a first antenna of the one or more antennas and the SAR sensor; acquiring an initial capacitance value aiming at a first antenna channel, wherein the initial capacitance value is the capacitance value of the first antenna channel under the condition that SAR does not fail; and determining whether the SAR of the first antenna channel fails based on a deviation between the first channel capacitance value and the initial capacitance value.

According to yet another aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the steps of the SAR failure detection method as described above.

By using the SAR failure detection method, the electronic device and the readable storage medium provided by the embodiment of the disclosure, the channel capacitance value corresponding to the space between the antenna and the SAR sensor can be detected, compared with the acquired initial capacitance value, and whether the SAR of the antenna channel is in an effective working state or not is determined according to the deviation of the two capacitance values. By adopting the SAR failure detection method provided by the embodiment of the disclosure, the SAR failure condition can be rapidly detected without additionally increasing hardware cost in the electronic equipment, and the SAR failure detection with low cost is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 shows a schematic block diagram of an electronic device in a network environment;

fig. 2 shows a schematic block diagram of an electronic device 101 for supporting legacy network communication and 5G network communication;

FIG. 3 illustrates another schematic block diagram of an electronic device according to an embodiment of the present disclosure;

fig. 4 shows a schematic diagram of an implementation of an antenna tuning circuit;

FIG. 5 shows a schematic flow chart diagram of a SAR failure detection method in accordance with an embodiment of the present disclosure;

FIG. 6 shows a schematic diagram of an SAR sensor based antenna channel in accordance with an embodiment of the present disclosure;

FIG. 7 illustrates another schematic diagram of an SAR sensor based antenna channel in accordance with an embodiment of the present disclosure;

FIG. 8 shows a schematic block diagram of an electronic device according to an embodiment of the disclosure;

FIG. 9 shows another schematic block diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 10 illustrates a schematic block diagram of an electronic device according to some embodiments of the present disclosure;

FIG. 11 illustrates an architectural diagram of an exemplary computing device in accordance with some embodiments of the present disclosure;

fig. 12 illustrates a schematic block diagram of a computer-readable storage medium according to some embodiments of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. It will be apparent that the described embodiments are merely embodiments of a portion, but not all, of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are intended to be within the scope of the present disclosure, based on the embodiments in this disclosure.

The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

First, an exemplary electronic device implementing the method according to the embodiments of the present disclosure will be described.

For example, the electronic apparatus in the present disclosure may be a device that performs network connection through an antenna. As an example, the electronic apparatus may be a mobile terminal, a desktop computer, a tablet computer, a wearable electronic device, an augmented reality (Augmented Reality, AR) device, a personal computer (Personal Computer, PC), a personal digital assistant (personal digital assistant, PDA), a smart watch, a netbook, or the like capable of installing an application program and displaying an application icon, and the present disclosure is not limited to a specific form of the electronic apparatus.

In at least some embodiments, methods according to embodiments of the present disclosure may be implemented in an electronic device 101, such as that shown in fig. 1.

Fig. 1 is a schematic block diagram illustrating an electronic device in a network environment, in accordance with various embodiments. Referring to fig. 1, an electronic device 101 in a network environment may communicate with the electronic device 102 via a first network 198 (e.g., a short-range wireless communication network) or with at least one of the electronic device 104 or the server 108 via a second network 199 (e.g., a long-range wireless communication network). For example, the electronic device 101 may communicate with the electronic device 104 via the server 108.

Referring to fig. 1, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connection end 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a user identification module 196, and an antenna module 197. In some embodiments, one or more of the illustrated components (e.g., connection end 178) may be omitted from electronic device 101, or one or more other components may be added to electronic device 101, without limitation. In some embodiments, some of the components described above (e.g., sensor module 176, camera module 180, or antenna module 197) may be implemented as a single integrated component (e.g., display module 160).

By way of example, the processor 120 may run, for example, software (e.g., program 140) to control at least one other component (e.g., hardware component or software component) of the electronic device 101 that is coupled to the processor 120, and may perform various data processing or computing procedures. As at least part of the data processing or calculation, the processor 120 may store commands or data received from another component (e.g., the sensor module 176 or the communication module 190) into the volatile memory 132, process the commands or data stored in the volatile memory 132, and store the resulting data in the non-volatile memory 134. As an example, the processor 120 may include a main processor 121 (e.g., a central processor (Central Processing Unit, CPU) or an application processor (Application Processor, AP) or an auxiliary processor 123 that is operatively independent of or in conjunction with the main processor 121. For example, the auxiliary processor 123 may include a graphics processing unit (Graphics Processing Unit, GPU), a neural processing unit (Neuroprocessing unit, NPU), an image signal processor (Image Signal Processor, ISP), a sensor hub processor or a communication processor (Communication Processor, CP), and the like.

As an example, when the electronic device 101 comprises a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be adapted to consume less power than the main processor 121 or to be dedicated to a specific function, further, the auxiliary processor 123 may be implemented separately from the main processor 121 or as part of the main processor 121. The auxiliary processor 123 may control at least some of the functions or states associated with at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) when the main processor 121 is in an inactive (e.g., sleep) state, or the auxiliary processor 123 may control at least some of the functions or states associated with at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) with the main processor 121 when the main processor 121 is in an active state (e.g., running an application).

As an example, the auxiliary processor 123 (e.g., the image signal processor ISP or the communication processor CP) may be implemented as part of another component (e.g., the camera module 180 or the communication module 190) functionally related to the auxiliary processor 123. As an example, the auxiliary processor 123 (e.g., neural processing unit NPU) may include hardware structures dedicated to artificial intelligence model processing, such as may generate artificial intelligence models through machine learning. As examples, the learning algorithm may include, but is not limited to, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a deep neural network (Deep Neural Network, DNN) (DNN), a convolutional neural network (Convolutional Neural Network, CNN), a recurrent neural network (Recurrent Neural Network, RNN), a deep belief network (Deep Belief Network, DBN), or the like, or a combination of two or more of the above, but is not limited thereto. Alternatively, the artificial intelligence model may include software structures in addition to hardware structures.

The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). By way of example, the various data may include, for example, software (e.g., program 140) and input data or output data for commands associated therewith. Memory 130 may include volatile memory 132 or nonvolatile memory 134.

By way of example, the program 140 may be stored as software in the memory 130, and the program 140 may include, for example, an Operating System (OS) 142, middleware 144, and an Application (APP) 146.

The input module 150 may receive commands or data from outside the electronic device 101 (e.g., a user) to be used by other components of the electronic device 101 (e.g., the processor 120). The input module 150 may include, for example, a microphone, a mouse, a keyboard, keys (e.g., buttons), or a digital pen (e.g., a stylus).

The sound output module 155 may output a sound signal to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. Speakers may be used for general purposes such as playing multimedia. The receiver may be used to receive an incoming call. As an example, the receiver may be implemented separate from the speaker or as part of the speaker.

The display module 160 may visually provide information to the outside (e.g., user) of the electronic device 101. The display device 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling a corresponding one of the display, the hologram device, and the projector. As an example, the display module 160 may include a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the strength of a force caused by a touch.

The audio module 170 may convert sound into electrical signals and vice versa. As an example, the audio module 170 may obtain sound via the input module 150, or output sound via the sound output module 155 or headphones of an external electronic device (e.g., the electronic device 102) that is directly (e.g., wired) or wirelessly connected to the electronic device 101.

The sensor module 176 may detect an operational state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) external to the electronic device 101 and then generate an electrical signal or data value corresponding to the detected state. As examples, the sensor module 176 may include, for example, a grip sensor, a proximity sensor, a gesture sensor, a gyroscope sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a color sensor, an infrared sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

As an example, 176 in the sensor module may hold the sensor or a detection value of the proximity sensor may be used to detect a proximity state or a holding state of the electronic device 101, such as by a user.

Interface 177 may support one or more specific protocols that will be used to connect electronic device 101 with an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly. By way of example, interface 177 may include, for example, a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital (SD) card interface, or an audio interface.

The connection end 178 may include a connector, wherein the electronic device 101 may be physically connected with an external electronic device (e.g., the electronic device 102) via the connector 178. As examples, the connection end 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

The haptic module 179 may convert the electrical signal into a mechanical stimulus (e.g., vibration or motion) or an electrical stimulus that may be recognized by the user via his sense of touch. By way of example, haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrostimulator.

It is to be appreciated that reference herein to a user may refer to an operator that may operate an electronic device, and as one implementation, the user may be specific to the device in the manner in which account information is logged into an application of the electronic device.

The camera module 180 may capture still images or moving images. As an example, the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

The power management module 188 may manage power supply to the electronic device 101. As an example, the power management module 188 may be implemented as at least a portion of, for example, a power management integrated circuit (Power Management Integrated Circuit, PMIC). Battery 189 may power at least one component of electronic device 101. As examples, battery 189 may include a primary non-rechargeable battery, a rechargeable battery, or a fuel cell.

The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., the electronic device 102, the electronic device 104, or the server 108) and performing communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently of the processor 120 (e.g., application processor AP) and supporting direct (e.g., wired) or wireless communication. As examples, the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system communication module) or a wired communication module 194 (e.g., a local area network communication module or a power line communication module). A respective one of these communication modules may communicate with external electronic devices via a first network 198 (e.g., a short-range communication network such as bluetooth, wireless fidelity (WiFi) direct, or infrared data association) or a second network 199 (e.g., a long-range communication network such as a conventional cellular network, 5G network, next-generation communication network, the internet, or a computer network). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multiple components (e.g., multiple chips) separate from each other. The wireless communication module 192 may identify and authenticate the electronic device 101 in a communication network, such as the first network 198 or the second network 199, using the user information stored in the user identification module 196.

The wireless communication module 192 may support a 5G network following a 4G network as well as next generation communication technologies (e.g., new Radio (NR) access technologies). NR access technologies may support enhanced mobile broadband, large-scale machine type communications or ultra-reliable low-latency communications. The wireless communication module 192 may support a high frequency band (e.g., millimeter wave band) to achieve, for example, a high data transmission rate. The wireless communication module 192 may support various techniques for ensuring performance over high frequency bands, such as, for example, beamforming, massive Multiple-input Multiple-output (MIMO), full-dimensional MIMO, array antennas, analog beamforming, or massive antennas. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., second network 199).

The antenna module 197 may transmit signals to the outside of the electronic device 101 (e.g., an external electronic device) or receive signals from the outside of the electronic device 101. As an example, the antenna module 197 may include an antenna, which may include a radiating element. The radiating element is composed of a conductive material or conductive pattern formed in or on a substrate (e.g., a printed circuit board). As an example, the antenna module 197 may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication scheme used in a communication network, such as the first network 198 or the second network 199, may be selected from a plurality of antennas by, for example, the communication module 190 (e.g., the wireless communication module 192). Signals may then be transmitted or received between the communication module 190 and the external electronic device via the selected at least one antenna. As an example, further components (e.g., radio frequency integrated circuits (Radio Frequency Integrated Circuit, RFICs) other than radiating elements may additionally be formed as part of the antenna module 197.

As an example, antenna module 197 may form a millimeter wave antenna module. As an example, the millimeter wave antenna module may include a printed circuit board, a radio frequency integrated circuit RFIC disposed on a first surface of the printed circuit board or adjacent to the first surface and capable of supporting a specified high frequency band, and a plurality of antennas (e.g., array antennas) disposed on a second surface of the printed circuit board or adjacent to the second surface and capable of transmitting or receiving signals of the specified high frequency band.

At least some of the above components may be interconnected via an inter-peripheral communication scheme (e.g., bus, general purpose input output, serial peripheral interface, or mobile industrial processor interface) and communicatively communicate signals (e.g., commands or data) therebetween.

As an example, commands or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. Each of the electronic device 102 or the electronic device 104 may be the same type of device as the electronic device 101 or a different type of device from the electronic device 101. As an example, all or some of the operations to be performed at the electronic device 101 may be performed at one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 automatically performs a function or service or performs a function or service in response to a request from a user or another device, the electronic device 101 may request one or more external electronic devices to perform at least a portion of the function or service, instead of performing all of the function or service, or the electronic device 101 may request one or more external electronic devices to perform at least a portion of the function or service in addition to the function or service. The external electronic device or devices that received the request may perform at least a portion of the above-described functions or services, or perform additional functions or additional services related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may provide the result as at least a partial reply to the request with or without further processing of the result.

For this purpose, for example, cloud computing technology, distributed computing technology, mobile edge computing technology, or client server computing technology, etc. may be used. The electronic device 101 may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. In other examples, the external electronic device 104 may include an internet of things device. Server 108 may be an intelligent server using machine learning and/or neural networks. As an example, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart home, smart city, smart car, healthcare, etc.) based on 5G communication technology or internet of things related technology.

In the above, the electronic device implementing the method according to the present disclosure is described with reference to fig. 1, and it is understood that the electronic device capable of implementing the method provided according to the present disclosure is not limited to the above-described structure. For example, one or more components may be added or removed from the structure shown in fig. 1, and for example, an electronic device implementing a method provided in accordance with the present disclosure may also be a device of a particular other structural layout, without limitation.

Fig. 2 shows a schematic block diagram of an electronic device 101 for supporting conventional network communication and 5G network communication. Referring to fig. 2, the electronic device 101 may include a first communication processor 212, a second communication processor 214, a first Radio Frequency Integrated Circuit (RFIC) 222, a second RFIC 224, a third RFIC 226, a fourth RFIC 228, a first radio frequency front end (Radio Frequency Front End, RFFE) 232, a second RFFE 234, a third RFFE 236, a first antenna module 242, a second antenna module 244, a third antenna module 246, and an antenna 248. The electronic device 101 may also include a processor 120 and a memory 130. The second network 199 may include a first cellular network 292 and a second cellular network 294. As an example, the electronic device 101 may also include one or more of the components shown in fig. 1, and the second network 199 may also include at least one other network. As an example, the first communication processor 212, the second communication processor 214, the first RFIC 222, the second RFIC 224, the fourth RFIC 228, the first RFFE 232, and the second RFFE 234 may form part of the wireless communication module 192. As an example, the fourth RFIC 228 may be omitted or included as part of the third RFIC 226.

The first communication processor 212 may establish a communication channel for a frequency band for wireless communication with the first cellular network 292, or may support legacy network communications via the established communication channel. For example, the first cellular network may be a legacy network including a second generation, third generation, fourth generation, or long term evolution network. The second communication processor 214 may establish a communication channel corresponding to a designated frequency band (e.g., from about 6GHz to about 60 GHz) of the frequency bands to be used for wireless communication with the second cellular network 294, or may support fifth generation network communications via the established communication channel. As an example, the second cellular network 294 may be a 5G network defined by the third generation partnership project. Further, as an example, the first communication processor 212 or the second communication processor 214 may establish a communication channel corresponding to another designated frequency band (e.g., about 6GHz or less) of the frequency bands to be used for wireless communication with the second cellular network 294, or may support 5G network communication via the established communication channel.

The first communication processor 212 may transmit and/or receive data with the second communication processor 214. For example, data classified for transmission via the second cellular network 294 may be changed to be transmitted via the first cellular network 292. In this case, the first communication processor 212 may receive the transmission data from the second communication processor 214. For example, the first communication processor 212 may send and/or receive data to and/or from the second communication processor 214 via the inter-processor interface 213. The inter-processor interface 213 may be implemented as, for example, a universal asynchronous receiver and/or transmitter or peripheral component interconnect bus fast interface, but is not limited to a particular kind. The first communication processor 212 and the second communication processor 214 may exchange packet data information and control information using, for example, a shared memory. The first communication processor 212 may send and/or receive various information, such as sensing information, output strength information, or resource block allocation information, to and/or from the second communication processor 214.

As an example, the first communication processor 212 may not be directly connected with the second communication processor 214. In this case, the first communication processor 212 may send and/or receive data to and/or from the second communication processor 214 via the processor 120. For example, the first communication processor 212 and the second communication processor 214 may send and/or receive data to and/or from the processor 120 via the peripheral component interconnect bus fast interface, but the kind of interface is not limited thereto. The first communication processor 212 and the second communication processor 214 may exchange control information and packet data information with the processor 120 using a shared memory.

As an example, the first communication processor 212 and the second communication processor 214 may be implemented in a single chip or a single package. As an example, the first or second communication processor 212 or 214 and the processor 120, the auxiliary processor 123 or the communication module 190 may be formed in a single chip or a single package.

Fig. 3 shows another schematic block diagram of an electronic device, in which two antenna links are shown, according to an embodiment of the present disclosure. It is understood that the number of antennas included in the electronic device according to the embodiment of the present disclosure is not limited thereto.

Referring to fig. 3, for example, the electronic device 101 of fig. 1 may include a processor 120, a communication processor 310 (e.g., which may be the first communication processor 212 or the second communication processor 214 of fig. 2), an RFIC 320, a first RFFE 331, a second RFFE 332, a switch 330, a first antenna tuning circuit 341, a second antenna tuning circuit 342, a first antenna 351, and a second antenna 352. As an example, the first RFFE 331 may be disposed at an upper end of the case of the electronic device 101, and the second RFFE 332 may be disposed at a lower end of the case of the electronic device 101.

As an example, in transmitting signals, RFIC 320 may convert baseband signals generated by communication processor 310 to radio frequency signals for use in a communication network. For example, the RFIC 320 may transmit a radio frequency signal used in the first communication network to the first antenna 351 or the second antenna 352 through the first RFFE 331 and the switch 330.

As an example, the transmit path from the RFIC 320 to the first antenna 351 through the first RFFE 331 and the switch 330 may be referred to as a "first antenna transmit path". The transmit path from RFIC 320 to second antenna 352 through first RFFE 331 and switch 330 may be referred to as a "second antenna transmit path". As an example, different path losses may occur in the two antenna transmit paths because the length of the transmit paths and/or the components disposed on the transmit paths are different from each other. Further, since the antennas (e.g., the first antenna 351 and the second antenna 352) corresponding to each individual antenna transmission path are provided at different positions on the electronic device 101, different antenna losses are also made possible.

As an example, the first antenna tuning circuit 341 is connected to the front end of the first antenna 351, and the second antenna tuning circuit 342 is connected to the front end of the second antenna 352. As one implementation, the communication processor 310 may adjust the settings of the first antenna tuning circuit 341 and the second antenna tuning circuit 342 to adjust the characteristics of the signals transmitted through each connected antenna and the signals received through each connected antenna.

Fig. 4 shows a schematic diagram of an implementation of an antenna tuning circuit, which may be, for example, the first antenna tuning circuit 341 or the second antenna tuning circuit 342 in fig. 3. Antenna tuning circuitry according to various embodiments may include at least one impedance tuning circuit 410 and one or more aperture tuning circuits (e.g., aperture tuning circuits 420a and 420b shown in fig. 4). It will be appreciated that the second antenna tuning circuit 342 shown in fig. 3 may be implemented in the same manner as the first antenna tuning circuit 341, but may also be implemented in a different manner. As an example, the impedance tuning circuit 410 may be configured to perform impedance matching with a network according to control of at least one processor. As an example, the aperture tuning circuits 420a and 420b may change the structure of the antenna by turning on and/or off a switch according to control of at least one processor.

Referring to fig. 4, an impedance tuning circuit 410 may be connected to a conduction point 430. The conduction point 430 may be connected to an RFFE, for example, and may be connected to a diplexer of the RFFE. Conductive point 430 may refer to a power rail or power channel to which the RFFE and antenna tuning circuit are connected. Impedance tuning circuit 410 may be connected to antenna 440 and aperture tuning circuits 420a and 420b may be connected to a power rail connecting impedance tuning circuit 410 and antenna 440.

As an example, a processor (e.g., CPU) of the electronic device 101 may change a setting value of the antenna tuning circuit according to an event related to the processor. For example, the electronic device 101 may be controlled to change the on and/or off states of switches (e.g., the impedance tuning circuit 410 and/or the aperture tuning circuits 420a and 420 b) included in the antenna tuning circuit according to a change in the set value.

In the related art, an electronic device may adjust transmission signal power according to the influence of transmission power on a living body (e.g., a human body). In general, a specific absorption ratio (Specific Absorption Rate, SAR) value may be used to represent the amount of radiation an organism is allowed to absorb per unit kilogram, defined as the electromagnetic power absorbed or consumed by a unit mass of biological tissue. The SAR value can characterize the influence of radiation on the human body, and belongs to a relatively direct test value. Wherein the lower the SAR value, the less radiation is absorbed by the organism. For example, the SAR value may be detected by a test device to detect wireless electromagnetic wave energy generated via an antenna of the electronic device to measure how much electromagnetic wave radiation is absorbed by the organism. The SAR value is related to parameters such as signal transmission power of an antenna in the device, and the higher the signal transmission power is, the higher the corresponding SAR value is.

According to some relevant regulatory indications of SAR values, the accumulated radio frequency energy in the head or body must not exceed a predetermined value during use of the electronic device. Common means for solving the problem of SAR value exceeding includes power backoff, i.e., reducing the influence of SAR value of an antenna on a human body by adjusting the power of a transmission signal of an electronic device.

In particular, one or more SAR sensors may be arranged in the electronic device for the antenna to detect if an organism (e.g., a user) is in proximity to the electronic device. As an example, the SAR sensor can determine the contact state of the user with the mobile phone by detecting the capacitance. If a user proximity is detected, the electronic device will reduce the emitted signal power of the antenna to control the amount of radiation within a safe range, thereby protecting the user.

As an example, the SAR sensor may first detect the channel capacitance value of the antenna to which it is connected once as a reference capacitance, e.g. the SAR sensor performs a capacitance detection once at power-on start-up of the electronic device and uses the detected channel capacitance value as a reference capacitance, which is used by the electronic device as a capacitance when no human body is in proximity, i.e. when no human body is in proximity, the detected capacitance only includes the capacitance device value present in the antenna channel and some equivalent capacitance value. Then, during the subsequent use of the electronic device, the SAR sensor can detect the channel capacitance value of the antenna at fixed time intervals or in real time to monitor the change of the capacitance value, because the coupling capacitance will be generated when a human body approaches the electronic device, i.e. when a human body approaches, the detected capacitance is composed of two terms, i.e. the reference capacitance when no human body approaches as described above plus the coupling capacitance. The electronic device judges whether a human body approaches based on the change of the detection capacitance value, and further, when the human body approaches, the electronic device can correspondingly control to reduce the transmitting signal power of the antenna, namely, realize power backspacing.

Taking an electronic device as a mobile phone terminal device as an example, for example, when the SAR sensor detects that no user is close, the mobile phone can use normal transmission signal power to perform network connection or use a higher power value to perform rapid data transmission, so as to realize efficient data exchange. For another example, in the case that the SAR sensor detects that the user is approaching the mobile phone (e.g., in the case that the user's ear is attached to the mobile phone, the mobile phone is put on the leg, etc.), the processor is triggered to perform the transmit power adjustment process, so as to avoid the possible influence on the human body caused by the over high transmit power. This process of reducing the power of the transmitted signal after detecting the approach or contact of the human body may also be denoted as SAR power backoff, or SAR backoff, i.e. the device reduces the power of the transmitted signal of the antenna due to SAR factors, to ensure that the SAR value is within a safe standard range when the human body approaches the handset. In particular, such a reduced power value due to SAR factors may also be denoted as SAR backoff value.

However, although SAR sensors are arranged in some electronic devices, there are some situations that may cause SAR failure, for example, device aging, device falling caused by knocks, program failure, and the like, which are unavoidable during the use of the device. After the SAR sensor fails to work abnormally, the approach of a human body or the abnormal triggering of SAR rollback cannot be detected, namely, the SAR value of the electronic device exceeds the standard because the SAR rollback scene triggered by the SAR sensor cannot be realized.

The present disclosure provides a SAR failure detection method, by using the method according to the embodiments of the present disclosure, a channel capacitance value corresponding to a space between an antenna and a SAR sensor can be detected, and compared with an obtained initial capacitance value, and whether the SAR of the antenna channel is in an effective operating state is determined according to the deviation of the two capacitance values. By adopting the SAR failure detection method provided by the embodiment of the disclosure, the SAR failure condition can be rapidly detected without additionally increasing hardware cost in the electronic equipment, and the SAR failure detection with low cost is facilitated.

If the SAR sensor is determined to be invalid, the electronic device can correspondingly adjust the transmitting signal power of the antenna, so that the SAR value of the user can be ensured to be within a preset safety standard range even if the SAR sensor is invalid, and the adverse situation that the SAR value cannot be controlled due to SAR invalidation is avoided.

The implementation procedure of the SAR failure detection method provided according to the embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings. In particular, flowcharts are used in this disclosure to describe steps of methods according to embodiments of the present disclosure, it should be understood that the steps preceding or following are not necessarily performed in the exact order shown. Rather, the various steps may be processed in reverse order or simultaneously. Also, other operational steps may be added to these processes, and the order of execution of the steps is not limited by the present disclosure unless explicitly disabled.

Fig. 5 shows a schematic flow chart of a SAR failure detection method according to an embodiment of the present disclosure, as shown in fig. 5, the method according to an embodiment of the present disclosure may include steps S101-S103.

First, in step S101, a first channel capacitance value corresponding to a first antenna channel of an electronic device is detected.

The electronic device according to an embodiment of the present disclosure may be, for example, the electronic device 101 described in connection with fig. 1, including components such as the processor 120, the memory 130, the sensor module 176, the communication module 190, the antenna module 197, etc., and as an example, the sensor module 176 may include the above-described SAR sensor for detecting whether an organism is in proximity to or in contact with the electronic device 101, and in case an organism is detected, the processor is capable of implementing the SAR backoff procedure. Specifically, the SAR sensor may transmit the detected capacitance value back to a processor (e.g., a CPU) of the electronic device, where the CPU determines whether an organism is approaching based on the detected capacitance value, and in case that it is determined that an organism is approaching, the CPU may control the tuning circuit described in connection with fig. 3 or fig. 4, for example, so as to control the transmit signal power of the antenna. Specifically, the CPU may control a modem (modem) configured in the electronic apparatus, and a back-off instruction is issued by the modem.

It is to be understood that the method of the embodiments of the present disclosure is not limited to application to the electronic device 101, but may be any structure of device as long as the SAR sensor is configured therein and the SAR value of the device needs to be controlled. For example, the electronic device may also be a wearable electronic device, a tablet computer, etc. with a network connection function, which is not listed here.

According to some embodiments of the present disclosure, the first channel capacitance value corresponding to the first antenna channel of the electronic device may be a capacitance value in an antenna link of the pointer to the first antenna. An electronic device according to an embodiment of the present disclosure may be configured with a SAR sensor, where the SAR sensor includes one or more detection terminals, and specifically, the one or more detection terminals are respectively connected to one or more antennas, and it is understood that a connection link between the antenna and the SAR sensor is denoted as an antenna channel, for example, the SAR sensor is connected to a first antenna, and a connection link between the two is denoted as a first antenna channel.

As an example, fig. 6 shows a schematic diagram of an SAR sensor based antenna channel according to an embodiment of the present disclosure.

As shown in fig. 6, for SAR sensor 601, it may include one or more detection terminals, such as three detection terminals S1, S2, and S3 shown in fig. 6, each for detecting a channel capacitance value of one antenna, for example, only an exemplary circuit configuration connected to first antenna 602 is shown in fig. 6. As shown in fig. 6, for the detection port S1 of the SAR sensor, the integral connection link (or connection structure) between it and the first antenna 602 is referred to as a first antenna channel.

Specifically, C1, C2, and C3 are blocking capacitors, C4 is an equivalent parasitic capacitor of a printed circuit board (Printed Circuit Board, PCB) trace, C5 is an equivalent coupling capacitor of a suspended antenna branch, for example, may be a metal branch of a metal frame, or an antenna branch of a flexible printed circuit board (Flexible Printed Circuit Board) antenna, and a sum of coupling capacitors between these branches and ground is equivalent to the capacitor C5. Specifically, the functions of C1, C2 and C3 can be to isolate SAR signals, and meanwhile, the cellular signals are not affected, and the size is generally between 10 and 100 pf. C4 may refer to the equivalent parasitic capacitance of the SAR sensor chip pad and trace, and the size varies with the length and width of the trace, typically about 5 pf. C5 may refer to the equivalent parasitic capacitance between the radiator of the antenna 602 and the floor, typically around 2 pf. It is understood that C4 and C5 are equivalent capacitance values, not true capacitance devices. In addition, tuner 603 may be used for frequency band tuning of the cellular antenna.

In connection with the structure shown in fig. 6, in step S101, detecting a first channel capacitance value corresponding to a first antenna channel of the electronic device may refer to detecting a capacitance value in an antenna link associated with the first antenna, including, for example, each of the capacitances in fig. 6, as the above-mentioned first channel capacitance value.

It will be appreciated by those skilled in the art that detecting the first channel capacitance value according to embodiments of the present disclosure is not limited to the circuit configuration shown in fig. 6, but may be a capacitance value for other circuit configurations such as the first antenna 602. This step S101 aims at detecting whether the device in the antenna link for the first antenna 602 is in an active connection state. As an example, during use of the electronic device, the device may fall off due to a collision or other factors, which causes the detected first channel capacitance value to deviate from the initial capacitance value, and accordingly, the SAR sensor cannot implement the normal SAR rollback procedure. The embodiments of the present disclosure take into account this change in capacitance and thereby detect whether the SAR sensor is operating effectively.

Specifically, in step S101, the CPU in the electronic device may instruct the SAR sensor to detect the first channel capacitance value corresponding to the first antenna channel of the electronic device, taking fig. 6 as an example, the SAR sensor is instructed by the CPU to detect the channel capacitance values of the three antennas connected thereto, for example, the SAR sensor will detect to obtain three channel capacitance values after receiving the detection instruction, and will obtain the first channel capacitance value of the first antenna channel, for example, the first antenna 602, and the first channel capacitance value may include the blocking capacitors C1, C2, and C3 described above, and the equivalent capacitors C4 and C5. The detection process of the other antenna channels (S2, S3) is similar to the first antenna and will not be described one by one. After detecting the first channel capacitance value, the SAR sensor can transmit the value back to the CPU for subsequent processing steps.

Referring next to fig. 5, in step S102, an initial capacitance value for the first antenna path is obtained, where the initial capacitance value is the capacitance value of the first antenna path in the case where SAR has not failed, according to the method of the embodiment of the present disclosure.

According to some embodiments of the present disclosure, the initial capacitance value may be detected by: before the electronic device leaves the factory, the capacitance value corresponding to the first antenna channel in the electronic device is detected by using a detection instrument and is used as the initial capacitance value of the first antenna channel.

Taking an electronic device as a mobile phone terminal as an example, before the mobile phone leaves the factory, a special calibration jig is required to calibrate the SAR sensor of the mobile phone in a production line, and factory calibration parameters, namely an initial capacitance value, are obtained. The SAR sensor of the mobile phone is calibrated because the action principle of the SAR sensor is based on capacitance value detection: when no organism contacts the antenna branch, an initial capacitance value exists in the antenna circuit structure, when the organism contacts the antenna branch, another capacitance value is added in the circuit, and when the difference value of the two capacitance values is larger than a threshold value, SAR rollback is triggered, so that when the organism approaches the mobile phone, the transmitting signal power of the antenna is reduced. The initial capacitance value may be not completely equal to the initial capacitance value of each mobile phone due to factors such as environmental temperature and production tolerance, so that the initial capacitance value of each mobile phone needs to be calibrated before delivery, and the initial capacitance value specific to the mobile phone is measured.

The initial capacitance value of the first antenna channel may also be the last detected capacitance value that determines that SAR has not failed, according to some embodiments of the present disclosure, without limitation.

With continued reference to fig. 5, in accordance with the method of an embodiment of the present disclosure, in step S103, it is determined whether the SAR of the first antenna channel has failed based on the deviation between the first channel capacitance value and the initial capacitance value.

Illustratively, the deviation between the first channel capacitance value and the initial capacitance value may be a difference value or a ratio between the two, which is not much done by the embodiments of the present disclosure. And under the condition of larger deviation between the two, the current first channel capacitance value is shifted to the initial capacitance value by larger value, and the first antenna channel fails with high probability.

According to an embodiment of the present disclosure, after determining whether the SAR of the first antenna channel fails according to the deviation between the first channel capacitance value and the initial capacitance value, the SAR failure detection method further includes: in the case of SAR failure of the first antenna channel, the transmit signal power of the first antenna in the first antenna channel is set to a value at which the human body is approaching the scene.

In this case, it is determined whether the SAR of the first antenna channel fails based on the deviation between the first channel capacitance value and the initial capacitance value, i.e., normal SAR backoff cannot be achieved, for example, SAR power backoff cannot be triggered even if human proximity is detected, which would cause the SAR value to exceed the standard in a human proximity scenario, possibly causing some influence on the human body due to electromagnetic radiation. Thus, in this case, in order to ensure that the SAR value is within the set range also in the event of a failure of the SAR sensor, the control is such that the transmit signal power of the first antenna is set to a value at which there is a human body approaching the scene. This can effectively avoid the occurrence of the condition that the SAR value exceeds the standard due to the failure of the SAR sensor.

With the method according to the embodiments of the present disclosure, it is able to determine whether the SAR for the first antenna channel is valid based on the detected deviation between the first channel capacitance value and the initial capacitance value, and in case of determining that the SAR is invalid, correspondingly adjust the SAR backoff value, for example, set to the SAR power backoff value when a human body is approaching, so as to ensure that electromagnetic radiation (i.e., the SAR value) of the electronic device is always kept within a set range.

According to some embodiments of the present disclosure, determining whether the SAR of the first antenna channel fails according to the deviation between the first channel capacitance value and the initial capacitance value (step S103) includes: and obtaining a capacitance difference value based on the capacitance value of the first channel and the initial capacitance value, comparing the capacitance difference value with a preset capacitance threshold value, and determining SAR invalidation of the first antenna channel under the condition that the capacitance difference value is larger than the preset capacitance threshold value.

According to some embodiments of the present disclosure, the preset capacitance threshold is set to be less than a minimum blocking capacitance value corresponding to the first antenna path. The purpose of this arrangement is that when the blocking capacitance in the link is damaged, opened, etc. due to various factors, the difference between the detected first channel capacitance value and the initial capacitance value is necessarily greater than the preset capacitance threshold value, so as to detect whether any device in the link fails. As an example, the preset capacitance threshold may be set to be smaller than the minimum blocking capacitance value in the first antenna path shown in fig. 6, i.e., smaller than the minimum value among C1, C2, and C3.

In the case where there is no damage, aging, or the like of the capacitive devices in the first antenna path that may cause the SAR sensor to detect failure, the first path capacitance value detected in step S101 will be close to the sum of the capacitance values of C1 to C5 shown in fig. 6 described above (e.g., the path capacitance value under normal conditions is characterized by the acquired initial capacitance value). In the case of a device failure, for example, the capacitor C1 drops due to a fault, the detected capacitance value of the first channel will deviate greatly from the initial capacitance value, and the difference value approaches the capacitance value of C1. For example, the capacitance threshold is set to be smaller than the capacitance value of the minimum blocking capacitance, so that the deviation generated by the falling of any blocking capacitance fault is larger than the preset capacitance threshold, further, the SAR detection failure can be determined, the power rollback can not be performed based on the SAR detection, and in this case, the power of the antenna is directly adjusted to the power value when the human body approaches for the safety of the user, so that the influence on the user is avoided.

That is, if the deviation between the detected first channel capacitance value and the initial capacitance value is too large (greater than the preset capacitance threshold value), it indicates that the electronic device is already greatly different from the state at the time of delivery, and the electronic device cannot be operated according to the power rollback logic at the time of delivery, that is, the detection channel of the SAR sensor is considered to be in a failure state. The preset capacitance threshold is set to be smaller than the minimum blocking capacitance value in the first antenna channel, so that whether the capacitance device in the antenna channel fails can be directly detected. For example, assuming that the minimum value of C1, C2, and C3 is C1, the preset capacitance threshold may be set smaller than C1, and when any one of C1, C2, and C3 fails, a capacitance change caused by the failure can be detected, thereby ensuring the accuracy of SAR failure detection.

According to some embodiments of the present disclosure, the preset capacitance threshold is set to a line fluctuation value that is greater than a channel capacitance value of the first antenna channel. This arrangement can avoid the failure of the SAR sensor due to the difference in capacitance detection caused by the fluctuation of the production line or the like. As described above, at the time of factory inspection, the initial capacitance values may not be exactly equal for each device due to the influence of the environmental temperature, production tolerance, and the like, that is, there is a fluctuation deviation of the production line of the capacitance values. The capacitance threshold value set according to the embodiment of the disclosure is larger than the fluctuation value of the production line, so that erroneous judgment of the SAR sensor caused by too small capacitance threshold value setting is avoided. By adopting the implementation mode, the initial capacitance value does not need to be detected for each electronic device, and the production process is simplified.

According to some embodiments of the present disclosure, a first channel capacitance value corresponding to a first antenna channel of an electronic device may be detected in response to detecting a trigger operation. That is, the SAR failure detection method according to the embodiment of the present disclosure may be started in response to a trigger operation. According to some embodiments of the present disclosure, detecting the trigger operation includes restarting the electronic device.

Taking the electronic device as a mobile phone terminal as an example, the detection triggering operation may be an operation of restarting the mobile phone, that is, automatically performing the steps of the method according to the embodiments of the present disclosure after the mobile phone is restarted.

The restart of the device is used as a detection trigger operation, which is favorable for improving the accuracy of the detected first capacitance value, because the capacitance value can be changed due to the influence of factors such as the ambient temperature, the running state of the device and the like, generally, after the restart, the temperature of the mobile phone is more likely to be close to the ambient temperature, and the device in the mobile phone is also in an unused state, so that the influence of the use heating of the device on the detected capacitance value is avoided. For the detected capacitance value, reference may be made to the description in connection with fig. 6. It is to be appreciated that the detection triggering operation according to embodiments of the present disclosure is not limited to device reboot. For example, it may be controlled in the program such that the detection operation is triggered periodically, for example, in units of month. For another example, a user operation interface may be set in the program, and the received user instruction is used as the detection trigger operation. The implementation of detecting a trigger operation is not listed one by one.

Methods according to some embodiments of the present disclosure further comprise: before the next detection triggering operation is detected, the transmitting signal power of the first antenna in the first antenna channel is always set to be a value when a human body approaches a scene. That is, after one SAR failure detection is performed, in the case where the SAR failure of the first antenna channel is determined, the transmit signal power of the first antenna may be set to the SAR backoff value at all times to reduce the radiation influence of the antenna on the human body until the next SAR failure detection is performed. In the next SAR failure detection process, it is re-determined whether the SAR of the first antenna channel fails.

According to some embodiments of the present disclosure, in the case that the capacitance difference is smaller than a preset capacitance threshold, the method further comprises: detecting a second channel capacitance value corresponding to a first antenna channel of the electronic device; and adjusting a transmit signal power corresponding to the first antenna channel based on a deviation between the first channel capacitance value and the second channel capacitance value. A capacitance difference value smaller than a preset capacitance threshold value indicates that the SAR sensor for the first antenna can perform normal operation, in this case, whether a human body is close or not may be determined based on a detection result (for example, a detected second channel capacitance value) obtained by the SAR sensor in a use process of the electronic device, and SAR backspacing is implemented based on this: if the SAR sensor detects that a human body approaches, the transmitting signal power is reduced, and when the SAR sensor does not detect that the human body approaches, the normal transmitting signal power is adopted.

As described above, the SAR sensor may perform a capacitance detection once at the time of starting the electronic device, and may be, for example, the first channel capacitance value obtained at the time of restarting the electronic device as described above, as the reference capacitance when there is no human body approach. Next, if it is determined that the SAR sensor is not failed (i.e., the capacitance difference between the first channel capacitance and the initial capacitance is less than a preset capacitance threshold) using the method of the embodiments of the present disclosure, a normal power backoff function may be implemented based on the detection result of the SAR sensor. For example, after the electronic device is started, the SAR sensor detects a channel capacitance value of the antenna channel in real time, for example, denoted as a second channel capacitance, and returns the detection result to the CPU. The CPU may determine whether there is a human body approaching based on a deviation between the first channel capacitance value and the second channel capacitance value, and adjust the transmit signal power corresponding to the first antenna channel accordingly. For example, when the capacitance difference between the first channel capacitance value and the second channel capacitance value is larger than a coupling capacitance threshold value set in advance when a human body approaches, the CPU controls the power backoff. In contrast, if the method of the embodiment of the disclosure determines that the first antenna channel of the SAR sensor fails (i.e., the capacitance difference between the first channel capacitance and the initial capacitance is greater than the preset capacitance threshold), the transmitting signal power of the antenna channel is directly adjusted to a value when the human body approaches the scene, i.e., in the case of SAR failure, the antenna channel is always in a power backoff state, so that the SAR of the electronic device is ensured to be always in a control range, regardless of the detection result obtained by the SAR sensor during the use of the electronic device.

Further, methods according to some embodiments of the present disclosure may further include: detecting a third channel capacitance value corresponding to the first antenna channel in response to detecting a next detection trigger operation; and adjusting the transmit signal power corresponding to the first antenna channel based on the comparison of the third channel capacitance value and the initial capacitance value, e.g., setting the transmit signal power of the first antenna in the first antenna channel to a value at which a human body is approaching the scene.

In these embodiments, for example, after restarting the handset again, the detection of the capacitance value of the antenna link for the first antenna will be triggered again to obtain a third channel capacitance value, and a determination is made as to whether the SAR for that channel is normal based on the difference between the newly detected third channel capacitance value and the initial capacitance value. As an example, if the difference between the re-detected third channel capacitance value and the initial capacitance value is smaller than the preset capacitance threshold value, the SAR sensor for the first antenna is characterized to be able to operate normally, in which case further SAR backoff may be performed based on the detection result of the SAR sensor, i.e. if the SAR sensor detects that there is a human body approach, the transmit signal power is reduced, and when no human body approach is detected, the normal transmit signal power is adopted.

According to the embodiment of the disclosure, since the capacitance difference between the first channel capacitance value and the initial capacitance value is greater than the preset capacitance threshold value, the transmission signal power corresponding to the first antenna channel may be adjusted, that is, the transmission signal power of the first antenna in the first antenna channel is set to a value when the human body approaches the scene. In this case, it is indicated that the SAR sensor failure is for the failure of the first antenna, e.g. due to the C1 capacitance open in the first antenna channel in fig. 6, in which case only the detection failure of the sensor for the first antenna is determined, whereby only the transmit signal power of the first antenna can be adjusted without affecting the transmit signal power of the other antennas to which the SAR sensor is connected.

Methods according to some embodiments of the present disclosure further comprise: in the event that the first channel capacitance value of the first antenna channel is not detected, the transmit signal power corresponding to the first antenna channel is adjusted. Further, in the case that the first channel capacitance value of the first antenna channel cannot be detected, the transmission signal power of all antenna channels corresponding to the SAR sensor connected to the first antenna is adjusted. That is, the first channel capacitance value corresponding to the first antenna channel cannot be detected in step S101, which may be an abnormality due to the SAR IC dropping, short-circuiting, open circuit, or the like. In this case, it may be determined that the entire SAR sensor is failed, but not a certain channel (e.g., a first antenna channel) of the SAR sensor is failed, and accordingly, the transmission signal power of the first antenna connected to the SAR sensor may be set to a value when a human body approaches a scene, and further, the transmission signal powers of the other antennas connected to the SAR sensor are also set to values when a human body approaches a scene.

As an example, fig. 7 shows another schematic diagram of an SAR sensor-based antenna channel according to an embodiment of the present disclosure, wherein SAR sensor 701 includes three detection ports S1, S2, S3, and is connected to a first antenna 702, a second antenna 703, and a third antenna 704, respectively. Assuming that the first channel capacitance value cannot be detected for the first antenna 702 in the above step S101, it is determined that the SAR sensor 701 fails, so as to adjust the transmission signal powers of the three antennas connected to the SAR sensor 701, for example, the transmission signal powers of all the antennas corresponding to the SAR sensor 701 are set to values when a human body approaches a scene, so as to ensure that the SAR value of the electronic device is maintained within the safety standard range, and avoid the exceeding of the SAR value possibly caused by the SAR sensor failure.

The method for controlling the transmitting signal power of the electronic device can detect whether the SAR sensor in the electronic device is in an effective state or not and ensure that the electromagnetic radiation of the electronic device is kept in a set range.

Specifically, with the SAR failure detection method provided by the embodiment of the present disclosure, a capacitance value corresponding to an antenna can be detected in response to a triggering operation, and compared with an initial capacitance value acquired in advance, whether the SAR sensor is in an effective working state is determined according to a comparison result of the capacitance, for example, if it is determined that the capacitance difference is greater than a preset capacitance threshold, that is, if it is determined that the SAR sensor fails, the transmission signal power corresponding to the antenna is adjusted, thereby it is possible to detect whether the SAR sensor in the electronic device is in an effective state, and it is ensured that electromagnetic radiation of the electronic device is always kept within a set range.

According to another aspect of the present disclosure, an electronic device is also provided. Fig. 8 illustrates a schematic block diagram of an electronic device according to an embodiment of the present disclosure, as illustrated in fig. 8, the electronic device 100 may include a processor 100-1, a SAR sensor 100-2, and one or more antennas 100-3 (e.g., the first antenna 100-3-1, the second antenna 100-3-2, and the third antenna 100-3-3 illustrated in fig. 8) connected to the SAR sensor 100-2.

According to an embodiment of the present disclosure, the processor 100-1 may be configured to perform the steps of: controlling the SAR sensor 100-2 to detect a first channel capacitance value corresponding to a first antenna channel, wherein the first antenna channel corresponds to a connection channel between a first antenna 100-3-1 of the one or more antennas and the SAR sensor 100-2; acquiring an initial capacitance value aiming at a first antenna channel, wherein the initial capacitance value is the capacitance value of the first antenna channel under the condition that SAR does not fail; and determining whether the SAR of the first antenna channel fails based on a deviation between the first channel capacitance value and the initial capacitance value.

It is to be appreciated that the electronic device 100 according to the examples of the present disclosure may be implemented as the structure of the electronic device 101 described above, or may be other structures, without limitation. The processor 100-1 may be, for example, the contemplation processor 212, 214 shown in fig. 2 or the communication processor 310 shown in fig. 3, and specifically, it is capable of controlling the SAR sensor 100-2 to detect a channel capacitance value of the antenna link, and controlling a transmit signal power of the antenna based on the detection result.

The following describes some functions implemented by an electronic device according to some embodiments of the present disclosure.

According to some embodiments of the present disclosure, the processor 100-1 determining whether the SAR of the first antenna channel fails based on the deviation between the first channel capacitance value and the initial capacitance value comprises: obtaining a capacitance difference value based on the first channel capacitance value and the initial capacitance value, and comparing the capacitance difference value with a preset capacitance threshold value; and determining SAR failure of the first antenna channel if the capacitance difference is greater than a preset capacitance threshold.

According to some embodiments of the present disclosure, after determining whether the SAR of the first antenna channel fails based on the deviation between the first channel capacitance value and the initial capacitance value, the processor 100-1 is further configured to: in the case of SAR failure of the first antenna channel, the transmit signal power of the first antenna in the first antenna channel is set to a value at which the human body is approaching the scene.

In accordance with some embodiments of the present disclosure, in response to detecting the trigger operation to detect a first channel capacitance value corresponding to a first antenna channel of the electronic device, the processor 100-1 is further configured to: before the next detection triggering operation is detected, the transmitting signal power of the first antenna in the first antenna channel is always set to be a value when a human body approaches a scene.

According to some embodiments of the present disclosure, the processor 100-1 is further configured to: in the event that the first channel capacitance value of the first antenna channel is not detected, the transmit signal power corresponding to the first antenna channel is adjusted.

According to some embodiments of the present disclosure, the processor 100-1 is further configured to: in the case where the first channel capacitance value of the first antenna channel cannot be detected, the transmission signal power of all antenna channels corresponding to the SAR sensor 100-2 connected to the first antenna is adjusted.

In accordance with some embodiments of the present disclosure, the processor 100-1 is further configured to, in the event that the capacitance difference is less than a preset capacitance threshold: detecting a second channel capacitance value corresponding to a first antenna channel of the electronic device; and adjusting a transmit signal power corresponding to the first antenna channel based on a deviation between the first channel capacitance value and the second channel capacitance value.

With respect to specific steps performed by the electronic device 100 according to the embodiment of the present disclosure, reference may be made to the above description of the SAR failure detection method according to the embodiment of the present disclosure in conjunction with fig. 1-7, which is not described in detail herein.

Similarly, with the electronic device 100 provided according to the embodiment of the present disclosure, it is possible to detect a capacitance value corresponding to an antenna in response to a triggering operation, and compare with an initial capacitance value acquired in advance, determine whether the SAR sensor is in an active operating state according to a comparison result of the capacitance, for example, adjust a transmit signal power corresponding to the antenna if it is determined that the capacitance difference is greater than a preset capacitance threshold, that is, if it is determined that the SAR sensor fails, thereby being able to detect whether the SAR sensor in the electronic device is in an active state, and ensure that electromagnetic radiation of the electronic device is always kept within a set range.

According to another aspect of the present disclosure, an electronic device is also provided. Fig. 9 illustrates another schematic block diagram of an electronic device according to an embodiment of the present disclosure, as shown in fig. 9, the electronic device 1000 may include a detection unit 1010 and a processing unit 1020. An electronic device according to some embodiments of the present disclosure is capable of implementing the SAR failure detection method described above based on the functional units configured therein.

According to some embodiments of the present disclosure, the processing unit 1020 determining whether the SAR of the first antenna channel fails according to a deviation between the first channel capacitance value and the initial capacitance value comprises: obtaining a capacitance difference value based on the first channel capacitance value and the initial capacitance value, and comparing the capacitance difference value with a preset capacitance threshold value; and determining SAR failure of the first antenna channel if the capacitance difference is greater than a preset capacitance threshold.

According to some embodiments of the present disclosure, after determining whether the SAR of the first antenna channel fails according to the deviation between the first channel capacitance value and the initial capacitance value, the processing unit 1020 is further configured to: in the case of SAR failure of the first antenna channel, the transmit signal power of the first antenna in the first antenna channel is set to a value at which the human body is approaching the scene.

In accordance with some embodiments of the present disclosure, in response to detecting a trigger operation to detect a first channel capacitance value corresponding to a first antenna channel of the electronic device, the processing unit 1020 is further configured to: before the next detection triggering operation is detected, the transmitting signal power of the first antenna in the first antenna channel is always set to be a value when a human body approaches a scene.

According to some embodiments of the present disclosure, the processing unit 1020 is further configured to: in the event that the first channel capacitance value of the first antenna channel is not detected, the transmit signal power corresponding to the first antenna channel is adjusted.

According to some embodiments of the present disclosure, the processing unit 1020 is further configured to: and adjusting the transmitting signal power of all antenna channels corresponding to the SAR sensor connected with the first antenna under the condition that the first channel capacitance value of the first antenna channel cannot be detected.

In accordance with some embodiments of the present disclosure, the processing unit 1020 is further configured to, in the event that the capacitance difference is less than a preset capacitance threshold: detecting a second channel capacitance value corresponding to a first antenna channel of the electronic device; and adjusting a transmit signal power corresponding to the first antenna channel based on a deviation between the first channel capacitance value and the second channel capacitance value.

With respect to specific steps performed by the electronic device 1000 provided according to embodiments of the present disclosure, reference may be made to the above description of the SAR failure detection method according to embodiments of the present disclosure in conjunction with fig. 1-7, which are not described in detail herein. It should be noted that, in the SAR detection and rollback process of the electronic device 1000 provided in the embodiment of the present disclosure, only the division of the above functional units is illustrated, and in practical application, the above functional units may be completed by different modules according to needs, for example, the internal structure of the terminal device is divided into different units, so as to complete all or part of the steps described above. In addition, the electronic device provided in the foregoing embodiments may fully implement the steps of the method provided according to the present disclosure, and the specific implementation procedure thereof refers to the method embodiment described above, and will not be repeated here.

According to yet another aspect of the present disclosure, there is also provided an electronic device, fig. 10 shows a schematic block diagram of an electronic device according to some embodiments of the present disclosure, as shown in fig. 10, the electronic device 2000 may include a processor 2010 and a memory 2020, wherein the memory 2020 stores thereon a computer program (such as program instructions, code, etc.). The processor 2020 is capable of executing the computer program to implement the steps of the SAR failure detection method as described above. As an example, the electronic device 2000 may be a terminal device on which a user logs in to an account.

In at least one example, processor 2010 may perform various actions and processes in accordance with a computer program stored in memory 2020. For example, processor 2010 may be an integrated circuit chip having signal processing capabilities. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, or a transistor logic device, discrete hardware components. Various methods, steps, and logic blocks disclosed in embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and may be an X86 architecture or an ARM architecture or the like.

Stored in memory 2020 is a computer program executable by a computer which, when executed by processor 2010, can implement the SAR failure detection method provided in accordance with some embodiments of the present disclosure. The memory 2020 may be volatile memory or nonvolatile memory or may include both volatile and nonvolatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (ddr SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link Dynamic Random Access Memory (SLDRAM), and direct memory bus random access memory (DR RAM). It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to other embodiments of the present disclosure, the electronic device 2000 may also include a display (not shown) to enable visualization, such as for a computer operator. For example, information related to the implementation of the SAR failure detection method according to an embodiment of the present disclosure may be displayed on a display, or information related to an application may also be displayed, without limitation. The electronic device 2000 may further comprise necessary components for enabling information interaction between the computer and the operator, other devices, e.g. an input device through which the operator may modify the computer program, etc.

As one exemplary embodiment, the electronic apparatus 1000 or the electronic device 2000 according to the present disclosure may also be implemented as a computing device as shown in fig. 11.

FIG. 11 illustrates an architectural diagram of an exemplary computing device according to an embodiment of the present disclosure. The computing device 3000 may include a bus 3010, one or more CPUs 3020, a Read Only Memory (ROM) 3030, a Random Access Memory (RAM) 3040, a communication port 3050 connected to a network, an input/output component 3060, a hard disk 3070, and the like. A storage device in the computing device 3000, such as the ROM 3030 or the hard disk 3070, may store various data or files related to the processing and/or communication of the SAR failure detection method provided by the present disclosure, and a computer program executed by the CPU. The computing device 3000 may also include a user interface 3080, which may be used to display presentation content and movable controls, for example, and may also receive touch operations from a user through a touch sensitive device thereon. Of course, the architecture shown in fig. 11 is merely illustrative, and one or more components of the computing device shown in fig. 11 may be omitted or components may be added to the computing device shown in fig. 11 as needed to implement different devices, which is not limited herein.

According to yet another aspect of the present disclosure, there is also provided a computer-readable storage medium, fig. 12 shows a schematic block diagram of the computer-readable storage medium provided by the present disclosure.

As shown in fig. 12, a computer program 4010 is stored on a computer readable storage medium 4000, wherein the computer program 4010, when executed by a processor, implements the steps of the SAR failure detection method described above. In at least one example, computer-readable storage media 4000 includes, but is not limited to, volatile memory and/or non-volatile memory. Volatile memory can include, for example, random Access Memory (RAM) and/or cache memory (cache) and the like. The non-volatile memory may include, for example, read Only Memory (ROM), hard disk, flash memory, and the like. For example, computer-readable storage medium 4000 may be connected to a computing device such as a computer (e.g., as shown in fig. 12). Next, the SAR failure detection method provided by the present disclosure can be performed with the computing device running the computer program 4010 stored on the computer readable storage medium 4000.

According to yet another aspect of the present disclosure, there is also provided a computer program product, comprising a computer program. In at least one example, the computer program may implement the steps of the SAR failure detection method described above when executed by a processor.

Those skilled in the art will appreciate that various modifications and improvements can be made to the disclosure. For example, the various devices or components described above may be implemented in hardware, or may be implemented in software, firmware, or a combination of some or all of the three.

Further, while the present disclosure makes various references to certain elements in a system according to embodiments of the present disclosure, any number of different elements may be used and run on a client and/or server. The units are merely illustrative and different aspects of the systems and methods may use different units.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the methods described above may be implemented by a computer program to instruct related hardware, and the program may be stored in a computer readable storage medium, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiment may be implemented in the form of hardware, or may be implemented in the form of a software functional module. The present disclosure is not limited to any specific form of combination of hardware and software.

Unless defined otherwise, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The foregoing is illustrative of the present disclosure and is not to be construed as limiting thereof. Although a few exemplary embodiments of this disclosure have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this disclosure. Accordingly, all such modifications are intended to be included within the scope of this disclosure as defined in the claims. It is to be understood that the foregoing is illustrative of the present disclosure and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The disclosure is defined by the claims and their equivalents.

Claims

1. A method for SAR failure detection, comprising:

Detecting a first channel capacitance value corresponding to a first antenna channel of the electronic device;

acquiring an initial capacitance value for the first antenna channel, wherein the initial capacitance value is the capacitance value of the first antenna channel under the condition that SAR does not fail; and

determining whether the SAR of the first antenna channel fails according to the deviation between the first channel capacitance value and the initial capacitance value.

2. The method of claim 1, wherein said determining whether SAR for the first antenna channel has failed based on a deviation between the first channel capacitance value and the initial capacitance value comprises:

obtaining a capacitance difference value based on the first channel capacitance value and the initial capacitance value, and comparing the capacitance difference value with a preset capacitance threshold value; and

and determining SAR invalidation of the first antenna channel under the condition that the capacitance difference value is larger than the preset capacitance threshold value.

3. The method of claim 1, wherein after determining whether the SAR for the first antenna channel has failed based on the deviation between the first channel capacitance value and the initial capacitance value, the method further comprises:

and under the condition that SAR of the first antenna channel fails, setting the transmitting signal power of the first antenna in the first antenna channel to be a value when a human body approaches to a scene.

4. A method according to claim 3, wherein a first channel capacitance value corresponding to a first antenna channel of the electronic device is detected in response to detecting the trigger operation, wherein the method further comprises: before the next detection triggering operation is detected, the transmitting signal power of the first antenna in the first antenna channel is always set to be a value when the human body approaches a scene.

5. The method of claim 1, wherein the initial capacitance value is detected by:

before the electronic device leaves the factory, a detection instrument is used for detecting the capacitance value corresponding to the first antenna channel in the electronic device to be used as an initial capacitance value of the first antenna channel.

6. The method of claim 1, wherein detecting a first channel capacitance value corresponding to a first antenna channel of an electronic device is responsive to a detection trigger operation, wherein the detection trigger operation comprises restarting the electronic device.

7. The method according to claim 1, wherein the method further comprises:

in the event that a first channel capacitance value for the first antenna channel is not detected, transmit signal power corresponding to the first antenna channel is adjusted.

8. The method of claim 7, wherein the method further comprises:

and under the condition that the first channel capacitance value of the first antenna channel cannot be detected, adjusting the transmitting signal power of all antenna channels corresponding to the SAR sensor connected with the first antenna.

9. The method of claim 2, wherein the preset capacitance threshold is set to be less than a minimum blocking capacitance value corresponding to the first antenna path.

10. The method of claim 2, wherein the preset capacitance threshold is set to a line fluctuation value that is greater than a channel capacitance value of the first antenna channel.

11. The method of claim 2, wherein in the event that the capacitance difference is less than the preset capacitance threshold, the method further comprises:

detecting a second channel capacitance value corresponding to the first antenna channel of the electronic device; and

a transmit signal power corresponding to the first antenna channel is adjusted based on a deviation between the first channel capacitance value and the second channel capacitance value.

12. An electronic device comprising a processor, a SAR sensor, and one or more antennas connected to the SAR sensor, wherein the processor is configured to:

Controlling the SAR sensor to detect a first channel capacitance value corresponding to a first antenna channel, wherein the first antenna channel corresponds to a connection channel between a first antenna of the one or more antennas and the SAR sensor;

13. A computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor realizes the steps of the method according to any of claims 1-11.