CN113945771A - Electronic device and detection method - Google Patents
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Abstract
The application discloses electronic equipment and a detection method, wherein the electronic equipment comprises: the system comprises a processor, a plurality of communication modules, a plurality of super-bandwidth modules, a plurality of combiners and a plurality of antennas; each antenna is electrically connected with one communication module and one ultra-bandwidth module through a combiner, the processor is electrically connected with each communication module and each ultra-bandwidth module respectively, and the working mode of the antenna can be switched between the communication mode and the ultra-bandwidth mode under the control of the processor; and when at least two antennas work in the ultra-bandwidth mode, detecting whether a non-air medium exists in a preset range through the antennas working in the ultra-bandwidth mode. In the technical scheme of this application, through with super bandwidth module and communication module sharing one antenna, can greatly strengthen the detection that is close to the human body under the condition that occupies less space to the corresponding communication module of adjustment reduces the emission power and reduces the radiation influence to the human body.
Description
Technical Field
The application belongs to the technical field of electronic equipment, and particularly relates to electronic equipment and a detection method.
Background
At present, for electronic products, users can generally produce certain influence to the human body because transmission and receiving electromagnetic wave in the use, and in order to the consideration to human health, the operator all has certain management and control to this influence, has formulated the standard, and in order to satisfy the standard, each producer adopts the scheme that increases corresponding sensor usually, when detecting human body and being close equipment, thereby can reduce the transmitting power of equipment and reach the effect that reduces the radiation to the human body. However, when the sensor is provided, a certain space is occupied, and the overall weight of the apparatus is also increased.
Disclosure of Invention
The present application is directed to solving at least one of the problems of the prior art or the related art.
The application aims to provide electronic equipment and a detection method, and the ultra-bandwidth module and the communication module share one antenna, so that the detection of approaching of a human body can be greatly enhanced under the condition of occupying less space, and the corresponding communication module is adjusted to reduce the emission power so as to reduce the radiation influence on the human body.
In order to achieve the above object, an embodiment of a first aspect of the present application provides an electronic device, including: the system comprises a processor, a plurality of communication modules, a plurality of super-bandwidth modules, a plurality of combiners and a plurality of antennas; each antenna is electrically connected with one communication module and one ultra-bandwidth module through a combiner, the processor is electrically connected with each communication module and each ultra-bandwidth module respectively, and the working mode of the antenna can be switched between the communication mode and the ultra-bandwidth mode under the control of the processor; and when at least two antennas work in the ultra-bandwidth mode, detecting whether a non-air medium exists in a preset range through the antennas working in the ultra-bandwidth mode.
According to an embodiment of the electronic device provided by the application, the method comprises the following steps: the antenna, the combiner, the communication module, the ultra-wideband module and the processor for control. The combiner is characterized in that one end of the combiner is provided with an antenna, the other end of the combiner is provided with a communication module and an ultra-bandwidth module, the communication module mainly emits electromagnetic waves of a communication frequency range outwards so as to realize normal communication, and the ultra-bandwidth module has the characteristics of high working frequency and linear propagation, and particularly has certain influence on characteristic parameters when a human body is close to the two antennas. At the moment, the specific position close to the human body can be obtained by acquiring and analyzing the characteristic parameters, and then the transmitting power of the communication module can be adjusted, so that the radiation influence on the human body is reduced.
Wherein, electronic equipment can be for smart mobile phone, flat board, intelligent wrist-watch, intelligent bracelet or other equipment that can send the electromagnetic wave and carry out the communication.
It should be emphasized that, the super-bandwidth module is not separately arranged, but is combined with the communication module for normal communication, and the super-bandwidth module and the communication module are connected to the same antenna, so that the unnecessary space for arranging the antenna can be greatly reduced, and the judgment accuracy of the super-bandwidth module can be improved by utilizing the arrangement position of the original antenna.
The processor is electrically connected with each communication module and each ultra-bandwidth module, so that the working mode of the antenna can be adjusted through the control of the processor, and particularly, the switching between the communication mode and the ultra-bandwidth mode can be carried out. For the present application, the operating mode of the antenna is increased, and in the ultra-wideband mode, if the number of the antennas in the mode is greater than or equal to two, whether a non-air medium exists or not can be detected according to the antennas operating in the mode, specifically, whether a non-air medium exists or not within a preset range.
The preset range can be determined according to the precision and the use requirement, and the specific non-air medium can include, but is not limited to, a human body, an electronic device or a non-conductive structure.
The communication module includes but is not limited to a module using communication protocols such as 2G/3G/4G/5G/SUB 6G/WIFI/BT and the like.
It is necessary to supplement that, when the super-bandwidth module performs mutual detection, it needs to satisfy priority setting on certain functions, and besides completing the self localization tracking, it can start the human body detection function, and at this time, the super-bandwidth module mainly transmits and receives signals with the super-bandwidth module connected with other antennas, thereby realizing the detection of whether the human body is approaching.
In a second aspect, the present application provides an embodiment of a detection method, which is used for the electronic device of the first aspect, and the detection method specifically includes: controlling at least two antennas in an ultra-wideband mode; determining at least one transmitting antenna and at least one receiving antenna; and detecting whether a non-air medium exists in a preset range or not according to the characteristic parameters between the transmitting antenna and the receiving antenna.
According to the detection method provided by the second aspect of the application, the electronic device of the first aspect is utilized, the combiner is utilized to connect the communication module and the ultra-wideband module to the same antenna, during detection, the plurality of antennas are adjusted to the ultra-wideband mode, then which antennas in the ultra-wideband mode belong to the transmitting antenna and which antennas belong to the receiving antenna are determined, the transmitting antenna is used for transmitting electromagnetic waves, the receiving antenna can analyze parameters of the received electromagnetic waves to obtain characteristic parameters, and therefore whether non-air media exist in a preset range is determined according to different characteristic parameters.
Additional aspects and advantages of the present application will be set forth in part in the description which follows, or may be learned by practice of the present application.
Drawings
FIG. 1 shows a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 2 shows a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 3 shows a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 4 shows a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 5 shows a schematic diagram of spectral characteristics of an electronic device according to an embodiment of the application;
FIG. 6 shows a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 7 shows a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 8 shows a schematic flow diagram of a detection method according to an embodiment of the present application.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 7 is:
102: an antenna; 104: a processor; 106: a combiner; 108: a communication module; 110: an ultra-bandwidth module; 112: an electronic component; 200: an electronic device; 202: an apparatus body; 204: a middle frame; 206: provided is an ultra-wideband terminal.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The electronic device provided in the embodiment of the present application is mainly used for electronic devices, such as mobile terminals like mobile phones, wearable devices, tablet computers, laptop computers, mobile computers, handheld game consoles, video recorders, camcorders, and the like. Of course, the present invention is not limited to electronic devices, and may be applied to other devices requiring electromagnetic waves to be radiated outward.
The electronic device and the detection method provided according to the embodiment of the application are described below with reference to fig. 1 to 8.
As shown in fig. 1 and fig. 2, one embodiment of the present application provides an electronic device 200, which includes a processor 104, a plurality of communication modules 108, a plurality of ultra-wideband modules 110, a plurality of combiners 106, and a plurality of antennas 102; each antenna 102 is electrically connected with one communication module 108 and one ultra-bandwidth module 110 through one combiner 106, the processor 104 is electrically connected with each communication module 108 and each ultra-bandwidth module 110, and the working mode of the antenna 102 can be switched between a communication mode and an ultra-bandwidth mode under the control of the processor 104; when at least two antennas 102 operate in the ultra-wideband mode, whether a non-air medium exists in a preset range is detected through the antennas 102 operating in the ultra-wideband mode.
An embodiment of an electronic device 200 provided according to the present application includes: an antenna 102, a combiner 106, and a communication module 108 and a super bandwidth module, and a processor 104 for control. One end of the combiner 106 is provided with an antenna 102, the other end is provided with a communication module 108 and an ultra-wideband module, the communication module 108 mainly emits electromagnetic waves in a communication frequency range outwards so as to realize normal communication, and the ultra-wideband module has the characteristics of high working frequency and linear propagation, and particularly has a certain influence on characteristic parameters when a human body approaches the two antennas 102. At this time, the specific position close to the human body can be obtained by obtaining and analyzing the characteristic parameters, and further the transmission power of the communication module 108 can be adjusted, so that the radiation influence on the human body is reduced.
The electronic device 200 may be a smart phone, a tablet, a smart watch, a smart band, or other devices capable of emitting electromagnetic waves for communication.
It should be emphasized that, the super-bandwidth module 110 is not separately provided in the present application, but is provided in combination with the communication module 108 for normal communication, and by connecting the two to the same antenna 102, the unnecessary space for antenna arrangement can be greatly reduced, and the determination accuracy of the super-bandwidth module 110 can be improved by using the original position of the antenna 102.
Since the dielectric constant and the loss tangent of the human body are much larger than those of air, when the human body is between the antennas, the frequency spectrum characteristics of the propagation path signal of the antenna signal of the ultra-wideband module 110 are affected, and thus the accuracy of ranging is affected.
The processor 104 is electrically connected to each communication module and each ultra-wideband module, so that the operating mode of the antenna can be adjusted, specifically, the antenna can be switched between the communication mode and the ultra-wideband mode under the control of the processor 104. For the present application, the operating mode of the antenna is increased, and in the ultra-wideband mode, if the number of the antennas in the mode is greater than or equal to two, whether a non-air medium exists or not can be detected according to the antennas operating in the mode, specifically, whether a non-air medium exists or not within a preset range.
The preset range can be determined according to the precision and the use requirement, and the specific non-air medium can include, but is not limited to, a human body, an electronic device or a non-conductive structure.
Further, the super-bandwidth module 110 is used to detect the frequency spectrum characteristics of the multi-path signals, for example, the distance of the antenna 102 of each super-bandwidth module 110 is increased by detecting the signal (time delay, amplitude, etc.) of the propagation path affected by the human body, so as to detect whether the human body approaches, and when the human body approaches within a certain distance, the signal propagation path affected by a certain path signal and the human body is detected to have a time delay and an amplitude reduction within a certain range, or the detection distance is increased within a certain range, so as to control and reduce the transmission power of the communication signal, so as to achieve the standard reaching of the SAR performance.
The communication module 108 includes, but is not limited to, a module using communication protocols such as 2G/3G/4G/5G/SUB 6G/WIFI/BT.
It should be added that, when the super-bandwidth module 110 performs mutual detection, it needs to satisfy priority setting on a certain function, and besides completing the self localization tracking, the human body detection function can be started, and at this time, the super-bandwidth module 110 mainly performs signal transmission and reception with the super-bandwidth module 110 connected to other antennas 102, thereby realizing detection on whether a human body approaches.
It should be noted that, when the super-bandwidth module 110 is used for positioning or ranging, in order to improve accuracy, when there is a requirement for linear ranging, only one super-bandwidth module 110 needs to be communicated with the antenna 102.
In another embodiment, with 3D positioning requirements, four ultrabandwidth modules 110 are required to communicate with the antenna 102.
In another embodiment, with 2D positioning requirements, three ultrabandwidth modules 110 are required to communicate with the antenna 102.
More specifically, since the number and arrangement of the communication antennas of the existing communication terminal, or the electronic device 200 with a communication function, are fully distributed in the terminal for increasing the signal, if the antennas of the ultra-wideband module 110 are forcibly added, on one hand, there is not enough space arrangement, and on the other hand, the functionality cannot meet the requirement, so that under the effect of the embodiment, unnecessary space occupation is reduced by the design of the common antenna.
Further, at least one of the at least two antennas 102 operating in the ultra-wideband mode is a transmitting antenna, and at least one is a receiving antenna; the transmitting antenna sends an ultra-bandwidth signal to the receiving antenna, and the processor detects whether a non-air medium exists in a preset range according to the ultra-bandwidth signal received by the receiving antenna.
By defining a portion of the plurality of antennas 102 operating in the ultra-wideband mode as a transmitting antenna and another portion as a receiving antenna, the transmitting antenna can emit a specific electromagnetic wave outwards, and the electromagnetic wave can only be received by the receiving antenna, so that the processor can determine whether a non-air medium exists within a preset range according to specific parameters of the ultra-wideband signal received by the receiving antenna.
It should be emphasized that, when there are different transmitting antennas transmitting the ultra-wideband signals, the processor may determine the transmitting antenna according to the ultra-wideband signals received by the receiving antenna, so as to determine the preset range corresponding to the transmitting antenna and the receiving antenna, and further facilitate determining whether there is an air medium in the preset range.
The ultra-wideband signal is an electromagnetic wave emitted by the transmitting antenna.
Further, the signal frequency bands of the communication module 108 and the super bandwidth module 110 connected to the same combiner 106 are different.
By limiting the difference between the new frequency bands of the signals sent by the communication module 108 and the ultra-wideband module 110 connected to the same combiner 106, the combiner 106 can be applied conveniently, i.e. combining the input signals of multiple frequency bands together and then selectively outputting them.
In a specific embodiment, the signal frequency band of the super bandwidth module 110 is high.
Further, comprising: the middle frame 204 is provided on the device body 202.
The middle frame 204 is arranged on the device body 202, so that the antenna 102 can be supported to a certain extent, and on the basis, the middle frame 204 belongs to an outer fixed structure, and the antenna 102 is arranged on the middle frame 204, so that the angle range of signals emitted by the antenna 102 to the outside can be increased.
The antenna 102 may be disposed on a single side of the middle frame 204, facing the front side or the rear side of the electronic device 200, or may be directly disposed on two side areas of the middle frame 204, so that the range of the transmitted signal may be increased.
Further, as shown in fig. 3, the method includes: an electronic component 112 provided between any two antennas 102; wherein, the operation of the electronic component 112 arranged between the two antennas 102 is controlled by the characteristic parameter between the two antennas 102 arranged at intervals.
In a specific spatial arrangement, different electronic components 112 may be disposed between the two antennas 102, at this time, a metal product already exists between the two antennas 102, and a path parameter determined by signal transmission between the two antennas has changed, and at this time, the electronic components 112 may be directly controlled according to a difference in characteristic parameters, so as to increase the overall control function of the electronic device 200.
The present embodiment further provides a detection method, which is used in the electronic device of any one of the above embodiments, as shown in fig. 8, the detection method includes: step S102: controlling at least two antennas in an ultra-wideband mode; step S104: determining at least one transmitting antenna and at least one receiving antenna; step S106: and detecting whether a non-air medium exists in a preset range or not according to the characteristic parameters between the transmitting antenna and the receiving antenna.
In the detection method of this embodiment, the combiner connects the communication module and the ultra-wideband module to the same antenna in the electronic device. During detection, the plurality of antennas are adjusted to the ultra-wideband mode, then which antennas in the ultra-wideband mode belong to the transmitting antennas and which antennas belong to the receiving antennas are determined, the transmitting antennas are used for transmitting electromagnetic waves, and the receiving antennas can analyze parameters of the received electromagnetic waves to obtain characteristic parameters, so that whether non-air media exist in a preset range or not is determined according to different characteristic parameters.
Further, after detecting whether the non-air medium exists in the preset range, the method further comprises the following steps: and when the non-air medium exists in the preset range, controlling the corresponding communication module to reduce the transmitting power.
When the existence of the non-air medium is detected, the corresponding communication module needs to be controlled to reduce the transmitting power, so that the radiation generated to the human body of the user is reduced.
Further, the characteristic parameters include signal delay, signal amplitude, and signal path parameters of the transmitting antenna and the receiving antenna.
The characteristic parameters mainly comprise two categories of signal time delay and signal amplitude, when the signal time delay is judged, the deviation of the signal time delay is mainly obtained, if the deviation is too large, the distance between the two antennas is considered to be increased, and under the general condition, the antenna position does not change, the current signal can be considered to be shielded seriously, and if the deviation is too small, the shielding can be approximately considered to be not existed. For the signal amplitude, if there is a block between the two antennas, the amplitude is also reduced, and the specific comparison object is the comparison between the signal peak value sent by the transmitting antenna and the new signal peak value received by the receiving antenna. By obtaining and analyzing the two parameters, whether a non-air medium exists on the propagation path of the antenna can be determined.
In addition, the characteristic parameters further include a signal path parameter, specifically, a length of a path for signal transmission between the transmitting antenna and the receiving antenna, and generally, a path length threshold and a distance threshold exist between the transmitting antenna and the receiving antenna, and when the length of the characteristic parameter is too long, it can be considered that a non-air medium exists within a preset range.
Further, under the condition that the characteristic parameter is a signal path parameter of the transmitting antenna and the receiving antenna, detecting whether a non-air medium exists in a preset range according to the characteristic parameter between the transmitting antenna and the receiving antenna, specifically including: detecting whether a terminal device corresponding to the distance threshold exists in a preset range or not according to the signal path parameters and at least one distance threshold; and if the terminal device corresponding to the distance threshold exists in the preset range, controlling the corresponding terminal device to operate according to the size relationship between the signal path parameter and different distance thresholds.
In this embodiment, the characteristic parameter is a signal path parameter, so that by acquiring the signal path parameter and comparing the signal path parameter with one or more distance thresholds, once the detected signal path parameter is larger, it can be considered that a terminal device corresponding to the distance threshold exists between the two antennas, and the terminal device may be an electronic device or an insulating device.
In a specific embodiment, a terminal device is disposed between a transmitting antenna and a receiving antenna of an electronic device, and the operation of the corresponding terminal device can be controlled according to the magnitude relationship between the signal path parameter and the distance threshold corresponding to the terminal device. For example, if the terminal device is a speaker of an electronic apparatus, the volume of the speaker may be controlled to be increased or decreased.
In another specific embodiment, the terminal device arranged between the transmitting antenna and the receiving antenna is provided with a terminal device arranged independently from the electronic equipment, and the operation of the corresponding terminal device can be controlled according to the size relation between the signal path parameter and the distance threshold corresponding to the terminal device. For example, if the terminal device is an external speaker, the volume of the speaker may be increased or decreased.
It should be noted that, in this embodiment, it is only necessary that the super bandwidth module has a distance detection function, and the super bandwidth module only detects the arrival time difference of the shortest path.
Further, the distance threshold is a straight-line distance between the transmitting antenna and the receiving antenna.
The distance threshold is limited to be the linear distance between the transmitting antenna and the receiving antenna, namely the physical distance between the transmitting antenna and the receiving antenna, so that the signal path parameters can be conveniently compared with the base number subsequently, and whether the corresponding communication module needs to be controlled to reduce the transmitting power or not is judged.
Further, under the condition that the characteristic parameter is the signal delay and the signal amplitude, detecting whether a non-air medium exists in a preset range according to the characteristic parameter between the transmitting antenna and the receiving antenna, specifically comprising: determining an amplitude difference between a peak value of the signal amplitude of the receiving antenna and a peak value of the signal amplitude of the transmitting antenna; determining the signal time delay between the moment when the transmitting antenna transmits the ultra-bandwidth signal and the moment when the receiving antenna receives the ultra-bandwidth signal; and when the amplitude difference value is larger than the amplitude difference threshold value and the signal time delay is larger than the time delay threshold value, determining that a non-air medium exists in a preset range.
When the characteristic parameters are signal time delay and signal amplitude, when a non-air medium is detected, the signal peak value of a receiving antenna, namely the peak value of the signal amplitude, is compared with the signal peak value of a transmitting antenna, namely the peak value of the signal amplitude, the amplitude difference between the signal peak value and the peak value of the signal amplitude is determined, and then the sending moment and the receiving moment are obtained on the basis, so that the signal time delay is obtained, if the deviation is too large, the distance between the two antennas is considered to be increased, and under the general condition, the antenna position does not change, the current signal can be considered to be shielded seriously, if the deviation is too small, the current signal can be considered to be not shielded, and through the obtaining and analyzing of the two parameters, whether the non-air medium exists in the preset range can be determined.
In this embodiment, the ultra-wideband module 110 needs to have a function of detecting a certain signal delay and a certain signal amplitude.
Further, the characteristic parameters include signal path parameters between the two antennas 102; wherein, by determining the relationship between the signal path parameter and the distance threshold, it is determined whether a non-air medium exists between the two antennas 102, and if so, the corresponding communication module 108 is controlled to reduce the transmission power.
Furthermore, the number of the distance thresholds is multiple, and the terminal device corresponding to the size relationship is controlled to operate according to the multiple size relationships by determining the size relationship between the signal path parameter and different distance thresholds.
Through setting up a plurality of distance threshold values, can compare signal path parameter and different distance threshold values respectively, can understand, the difference of distance threshold value, and the non-air medium that represents between two antennas also can change to can set for different functions according to specific judged result, satisfying under the corresponding condition, can carry out different functions, in other words, can set up the function according to the user demand of difference is nimble, greatly improved the operating functionality of product.
Specifically, there is a difference in distance threshold values corresponding to the metal product and the skin, and the function when the stylus pen is located between the two antennas is different from the function when the finger is located between the two antennas.
Further, when there are multiple antennas, even the path network composed of multiple antennas 102 can be used to roughly estimate the path traveled by the human body, for example, moving to path 1 and path 2 in turn can correspond to one function, moving to path 2 and path 3 in turn can correspond to another function.
Further, the distance threshold is a straight-line distance between the two antennas 102.
It is emphasized that the distance threshold is a linear distance, so that any structure moving between two antennas will interfere with signal propagation to facilitate detection.
In a specific embodiment, an antenna unit is provided, as shown in fig. 2, 4 and 5, including four antennas 102, which are respectively disposed at four corners, but may be disposed at other adjacent positions. When the operating frequency band of each communication module 108 does not overlap with the operating frequency band of UWB (ultra wide band), the combiner 106 may be used to perform frequency division and simultaneously operate the common antenna.
Because the power of the UWB operation is only mw power, which is not an order of magnitude compared with the power of each communication module 108, other communication modules 108 may also transmit when the UWB is transmitted, but any two communication modules 108 of each other communication module 108 cannot transmit simultaneously, for example, when 2G is transmitted, or 4G, 5G, or 6G cannot transmit.
Each of the four communication modules 108 includes, but is not limited to, one or more combinations of 2G/3G/4G/5G/SUB 6G/WIFI/BT and the like.
The four antennas 102 include: the antenna 1, the antenna 2, the antenna 3 and the antenna 4 are designed at different positions with excellent antenna space environment.
The four ultrabandwidth modules 110 include: the UWB module 1, the UWB module 2, the UWB module 3, and the UWB module 4 all need to have a basic ranging function, and have a function of detecting a main path and a multi-path signal, for example, the time delay offset of the main path (or called linear propagation) and the multi-path signal may be detected, and the amplitude variation of the main path (or called linear propagation) and the multi-path signal may also be detected.
Furthermore, the application terminal is rectangular, and when the antenna is designed at four corners of the terminal, the antenna environment is good, the antenna performance index is good, and the antenna directivity is better.
As shown in fig. 3, the antenna 1 is disposed at the upper left corner, and the antenna 2, the antenna 4 and the antenna 3 are respectively disposed along the clockwise direction, wherein a path 1 is disposed between the antenna 1 and the antenna 2, a path 3 is disposed between the antenna 1 and the antenna 3, a path 2 is disposed between the antenna 3 and the antenna 4, a path 4 is disposed between the antenna 4 and the antenna 2, a path 5 is disposed between the antenna 1 and the antenna 4, and a path 6 is disposed between the antenna 2 and the antenna 3.
When the method is applied to the mobile phone, the last arrangement is determined in front view of the back of the mobile phone, and for the front of the mobile phone, the six paths are respectively as follows: a path 1 'is between the antenna 1 and the antenna 2, a path 3' is between the antenna 1 and the antenna 3, a path 2 'is between the antenna 3 and the antenna 4, a path 4' is between the antenna 4 and the antenna 2, a path 5 'is between the antenna 1 and the antenna 4, and a path 6' is between the antenna 2 and the antenna 3.
Each path area is whether a terminal detects or senses different non-air media approaching or not or the approaching distance of different non-air media, and a terminal designer can establish a data model according to different approaching distances of different non-air media, different phase offset, different amplitude variation and the like so as to inquire the working state of the terminal and output a result.
For example, when the terminal is held by hand to look at the mobile phone, the signals propagated through the spatial paths 2, 3, 4, 5, 6 are affected by the hand of the human body, and the phases and amplitudes of the signals propagated through the spatial paths 2, 3, 4, 5, 6 change, while the phases and amplitudes of the signals propagated through the spatial paths 1, 1 ", 2", 3 ", 4", 5 ", 6" hardly change.
Therefore, the whole terminal can sense which region different substances approach the terminal probably due to the arrangement of the four antennas, and the maximum transmission power is reduced aiming at the communication modules of the antennas in different regions so as to solve the SAR problem.
Further, path 1, path 2, path 3, path 4, path 1 ", path 2", path 3 ", path 4" represent the shortest path, and there are also other shortest (or superior) paths, and may be a curved path, a straight path, an air medium, or other media, such as water, which are not to be enumerated here.
The path of spatial propagation is strongly correlated with the position of the antenna design. The antenna design is not good, the UWB signal directivity is strong, and the fewer paths for propagating signals between the UWB antennas are.
No matter which path the signal propagates through, as long as one of them path is straight line propagation, theoretically, UWB can calculate a fixed distance data, if all paths have human body or other material to shelter from, the distance of calculating will increase, of course, different material characteristics, the distance of calculating all can differ, it is big to the antenna influence, for example metal, between the antenna, the distance of calculating will increase most, when the metal block is big more, to a certain extent, UWB does not even calculate the distance, because UWB signal has all can not propagated each other.
In another embodiment, antenna 1 is in range with antenna 3 via spatial path 3, and because of the occlusion by the thumb, the UWB module detects that the distance between antenna 1 and antenna 3 is greater than the distance without any non-air medium occlusion.
The distance between the antenna 1 and the antenna 3 is measured through a space path 3', and due to the shielding of other fingers, the distance between the antenna 1 and the antenna 3 is detected by the UWB module to be larger than the distance without any non-air medium shielding.
The distance between the antenna 3 and the antenna 4 is measured through the space path 2', and due to the shielding of the hand support, the distance between the antenna 3 and the antenna 4 is detected by the UWB module to be larger than the distance shielded by no non-air medium.
The distance between the antenna 2 and the antenna 3 is measured through a space path 6', and due to the shielding of hands, the distance between the antenna 2 and the antenna 3 is detected by the UWB module to be larger than the distance without any non-air medium shielding.
Specifically, the detection of the spectral characteristics, delay and amplitude variations of the multipath signals between the antennas 102 is shown in fig. 5. In a specific embodiment, the UWB module 1 transmits a signal through the antenna 1, the UWB module 3 receives a signal through the antenna 3, and the received signal is amplified by, for example, a red dotted line, which is delayed due to a distance, when a human body approaches or is on a propagation path from the antenna 1 to the antenna 3, the received red dotted line is shifted to the right and the amplitude of the received signal is also reduced. The receiving channel of the UWB module 3 can determine whether a human body is close to or on a propagation path between the antennas by detecting the time delay and amplitude of the received signal, so that the CPU performs SAR reduction operation on the corresponding antennas.
Wherein, a specific theory of operation flow is that the operation of reducing SAR is directly carried out according to the distance deviation value between two antennas, specifically includes: when any communication module sends a maximum power transmission request, the UWB function of the relevant path is controlled to be opened, the UWB antennas of the terminals detect the distance mutually, if the detected distance deviation is larger than or equal to a certain threshold value, the situation that a human body is sheltered near the antenna with the maximum power transmission request is considered to exist, and at the moment, the CPU controls the communication module to reduce the transmission power. In this embodiment, UWB does not need to be provided with a function of detecting the phase, amplitude, and the like of the signal spectrum characteristics of each path, and UWB only needs to be provided with a distance detection function and detect the arrival time difference of the shortest path.
Another specific working principle flow is to detect the signal spectrum characteristics of each path between the two antennas, such as phase and amplitude variation values, the variation values reach or exceed a certain threshold value, and determine that the human body leans to a certain distance value, and perform corresponding SAR reduction operation. The method specifically comprises the following steps: when the terminal UWB does not position or track other UWB terminals, the UWB function is turned on, mutual detection between UWB antennas of the control terminal is carried out, when the time delay and the amplitude of a certain path exceed a certain threshold value, the CPU confirms that a human body shelter exists on the path, and the communication module of the path needs to be controlled to reduce the maximum transmitting power. For the embodiment, because the four antennas of the terminal are in close distance, the transmitting power between the UWB antennas is small, so that the static power consumption is also small, and the method can be used in other more scenes, detect the approach of each material to the terminal, and perform different operations and actions for different approaching objects. Such as the terminal dropping into the water, the terminal activating active water protection, etc.
The process is that UWB actively and always circularly detects whether human body or material is detected, and then SAR reducing action is carried out on the communication module with the maximum transmission power request on the path, namely the maximum transmission power of the communication module is reduced.
As shown in fig. 6, another embodiment of the present application provides an electronic device 200, which includes a device body 202 and an antenna 102, wherein the antenna structure 102 is disposed on the device body 202, so as to implement basic functions of communication of the electronic device 200. The electronic device 200 may be a smart phone, a tablet, a smart watch, a smart band, or other devices capable of emitting electromagnetic waves for communication.
Further, as shown in fig. 7, the method further includes: and the ultra-wideband terminal 206 is arranged independently from the equipment body 202, and the ultra-wideband module 110 of the antenna module is matched with the ultra-wideband terminal 206 to detect whether a non-air medium exists.
Through other ultra-wideband terminals 206 with ultra-wideband technology arranged outside the device body 202, the ultra-wideband terminals can be connected with the ultra-wideband module 110 in the antenna module, and non-air medium or human body detection is performed by combining with other external ultra-wideband terminals 206, so that a larger area, more functions and applications are realized, and in addition, the environment detection and sensing capability can be expanded.
According to the embodiment of the electronic equipment, the ultra-bandwidth module and the communication module share one antenna, so that the detection of the approach of a human body can be greatly enhanced under the condition of occupying less space, and the corresponding communication module is adjusted to reduce the emission power so as to reduce the radiation influence on the human body.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An electronic device, comprising: the system comprises a processor, a plurality of communication modules, a plurality of super-bandwidth modules, a plurality of combiners and a plurality of antennas;
each antenna is electrically connected with one communication module and one ultra-bandwidth module through one combiner, the processor is electrically connected with each communication module and each ultra-bandwidth module respectively, and the working mode of the antenna can be switched between a communication mode and an ultra-bandwidth mode under the control of the processor;
and when at least two antennas work in the ultra-bandwidth mode, detecting whether a non-air medium exists in a preset range through the antennas working in the ultra-bandwidth mode.
2. The electronic device of claim 1, wherein at least one of the at least two antennas operating in the ultra-wideband mode is a transmit antenna and at least one is a receive antenna;
the transmitting antenna sends an ultra-bandwidth signal to the receiving antenna, and the processor detects whether a non-air medium exists in a preset range according to the ultra-bandwidth signal received by the receiving antenna.
3. The electronic device of claim 1, wherein the communication module and the super bandwidth module connected to the same combiner have different signal frequency bands.
4. The electronic device of any of claims 1-3, comprising:
the antenna is arranged on the middle frame.
5. A detection method, for use in an electronic device according to any one of claims 1 to 4, the detection method comprising:
controlling at least two of the antennas in an ultra-wideband mode;
determining at least one transmitting antenna and at least one receiving antenna;
and detecting whether a non-air medium exists in a preset range or not according to the characteristic parameters between the transmitting antenna and the receiving antenna.
6. The method of detecting according to claim 5, further comprising, after said detecting whether a non-air medium is present within a preset range:
and when the non-air medium exists in the preset range, controlling the corresponding communication module to reduce the transmitting power.
7. The detection method according to claim 5, wherein the characteristic parameters include signal delay, signal amplitude, and signal path parameters of the transmitting antenna and the receiving antenna.
8. The method according to claim 7, wherein in a case that the characteristic parameter is a signal path parameter of the transmitting antenna and the receiving antenna, the detecting whether a non-air medium exists within a preset range according to the characteristic parameter between the transmitting antenna and the receiving antenna specifically includes:
detecting whether a terminal device corresponding to the distance threshold exists in a preset range or not according to the signal path parameters and at least one distance threshold;
and if the terminal device corresponding to the distance threshold exists in a preset range, controlling the corresponding terminal device to operate according to the magnitude relation between the signal path parameter and different distance thresholds.
9. The detection method of claim 8, wherein the distance threshold is a linear distance between the transmitting antenna and the receiving antenna.
10. The method according to claim 7, wherein, in a case that the characteristic parameter is the signal delay and the signal amplitude, the detecting whether a non-air medium exists within a preset range according to the characteristic parameter between the transmitting antenna and the receiving antenna specifically includes:
determining an amplitude difference between a peak value of the signal amplitude of the receiving antenna and a peak value of the signal amplitude of the transmitting antenna;
determining a signal time delay between a moment when the transmitting antenna transmits the ultra-wideband signal and a moment when the receiving antenna receives the ultra-wideband signal;
and when the amplitude difference value is larger than an amplitude difference threshold value and the signal time delay is larger than a time delay threshold value, determining that the non-air medium exists in the preset range.
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