CN108693520B - Electronic device and approach detection method - Google Patents
Electronic device and approach detection method Download PDFInfo
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- CN108693520B CN108693520B CN201810267194.XA CN201810267194A CN108693520B CN 108693520 B CN108693520 B CN 108693520B CN 201810267194 A CN201810267194 A CN 201810267194A CN 108693520 B CN108693520 B CN 108693520B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
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Abstract
The embodiment of the application provides electronic equipment and a proximity detection method, wherein the electronic equipment comprises a first antenna, a second antenna, a radio frequency module, a proximity module and a control circuit, wherein the control circuit is respectively coupled with the first antenna, the second antenna, the radio frequency module and the proximity module; the radio frequency module is connected with a first antenna, the first antenna is used as a radio frequency antenna, and the radio frequency antenna is used for receiving and transmitting radio frequency signals; the proximity module is connected with a second antenna which is used as a proximity antenna for receiving and transmitting detection signals, wherein the radio frequency signals are different from the signal frequency bands of the detection signals; the control circuit is used for controlling the proximity module to detect the standing wave ratio of the second antenna, and determining the proximity distance between the obstacle and the electronic equipment according to the standing wave ratio of the second antenna so as to control the electronic equipment according to the proximity distance. The embodiment of the application is used for achieving the approaching function by independently arranging the antenna in the electronic equipment, so that the structure compactness can be improved, and the screen occupation ratio is improved.
Description
Technical Field
The present disclosure relates to electronic devices, and particularly to an electronic device and a proximity detection method.
Background
With the development of network technology and the improvement of the intelligent degree of electronic equipment, users can realize more and more functions such as conversation, chatting, game playing and the like through the electronic equipment.
At present, electronic devices, such as mobile phones, generally employ a dedicated distance sensor to implement a proximity detection function by emitting light and receiving reflected light, and at this time, a light-transmitting area is required to be specially set on one side of a display screen of the electronic device to place the distance sensor, thereby resulting in a small screen occupation.
Disclosure of Invention
The embodiment of the application provides electronic equipment and a proximity detection method, so that a distance sensor is avoided being used, and the screen occupation ratio is improved.
The embodiment of the application provides electronic equipment, which comprises a first antenna, a second antenna, a radio frequency module, a proximity module and a control circuit, wherein the control circuit is respectively coupled with the first antenna, the second antenna, the radio frequency module and the proximity module;
the radio frequency module is connected with the first antenna, the first antenna is used as a radio frequency antenna, and the radio frequency antenna is used for receiving and transmitting radio frequency signals;
the proximity module is connected with the second antenna, the second antenna is used as a proximity antenna, and the proximity antenna is used for receiving and transmitting a detection signal, wherein the radio frequency signal is different from the signal frequency band of the detection signal;
the control circuit is used for controlling the proximity module to detect the standing wave ratio of the second antenna, and determining the proximity distance between an obstacle and the electronic equipment according to the standing wave ratio of the second antenna so as to control the electronic equipment according to the proximity distance.
The embodiment of the present application further provides a proximity detection method, which is applied to an electronic device, where the electronic device includes a first antenna, a second antenna, a radio frequency module and a proximity module, the radio frequency module is connected to the first antenna, the first antenna is used as a radio frequency antenna, the radio frequency antenna is used for transceiving radio frequency signals, the proximity module is connected to the second antenna, the second antenna is used as a proximity antenna, the proximity antenna is used for transceiving detection signals, where the radio frequency signals are different from signal frequency bands of the detection signals, and the method includes:
detecting a standing wave ratio of the second antenna;
determining a proximity distance between an obstacle and the electronic device according to the standing-wave ratio of the second antenna;
and controlling the electronic equipment according to the approaching distance.
The electronic device provided by the embodiment of the application comprises a first antenna, a second antenna, a radio frequency module, a proximity module and a control circuit, wherein the control circuit is respectively coupled with the first antenna, the second antenna, the radio frequency module and the proximity module; the radio frequency module is connected with a first antenna, the first antenna is used as a radio frequency antenna, and the radio frequency antenna is used for receiving and transmitting radio frequency signals; the proximity module is connected with a second antenna which is used as a proximity antenna for receiving and transmitting detection signals, wherein the radio frequency signals are different from the signal frequency bands of the detection signals; the control circuit is used for controlling the proximity module to detect the standing wave ratio of the second antenna, and determining the proximity distance between the obstacle and the electronic equipment according to the standing wave ratio of the second antenna so as to control the electronic equipment according to the proximity distance. The embodiment of the application is used for realizing the proximity function by independently arranging the antenna in the electronic equipment, the proximity function of the proximity sensor can be replaced by the standing-wave ratio of the independent antenna under the condition of omitting the proximity sensor, the structure compactness can be improved, and the screen occupation ratio is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 3 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 4 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 5 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 6 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 7 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 8 is a schematic flowchart of a proximity detection method according to an embodiment of the present application.
Fig. 9 is another schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
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; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the application provides electronic equipment and a proximity detection method. The details will be described below separately. The electronic device may be a smart mobile electronic device 100 such as a bracelet, a smart phone, a tablet computer based on an apple system or an android system, or a notebook computer based on a Windows or Linux system.
Referring to fig. 1, fig. 1 is a schematic view of an application scenario of an electronic device according to an embodiment of the present disclosure. The electronic device 100 includes a first antenna 111, a second antenna 112, a radio frequency module 104, a proximity module 105, and a control circuit 101, wherein the control circuit 101 is coupled to the first antenna 111, the second antenna 112, the radio frequency module 104, and the proximity module 105, respectively.
The rf module 104 is connected to the first antenna 111, the first antenna 111 serves as an rf antenna, and the rf antenna is used for receiving and transmitting rf signals.
The proximity module 105 is connected to a second antenna 112, the second antenna 112 serves as a proximity antenna, and the proximity antenna is configured to transmit and receive a detection signal, where a signal frequency band of the radio frequency signal is different from a signal frequency band of the detection signal. Wherein, the detection signal can select a wireless signal with higher sensitivity to the human body.
The control circuit 101 is configured to control the proximity module 105 to detect a standing wave ratio of the second antenna 112, and determine a proximity distance between the obstacle and the electronic device according to the standing wave ratio of the second antenna 112, so as to control the electronic device 100 according to the proximity distance.
Referring to fig. 2, fig. 2 is another schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The difference between fig. 2 and fig. 1 is that: the electronic device 100 also includes a control switch 108, and the control switch 108 may be a double pole double throw switch. The control switch 108 includes a first port k1, a second port k2, a third port k3 and a fourth port k4, the first port k1 is coupled to the rf module 104, the second port k2 is coupled to the proximity module 105, the third port k3 is coupled to the first antenna 111, the fourth port k4 is coupled to the second antenna 112, the first port k1 is communicated with the third port k3, and the second port k2 is communicated with the fourth port k 4.
In some embodiments, the control circuit 101 is configured to detect the signal strength of the first antenna 111 and the second antenna 112, and if the signal strength of the first antenna 111 is smaller than the signal strength of the second antenna 112, the control circuit 101 controls the control switch 108 to switch the first antenna 111 to be a proximity antenna and the second antenna 112 to be a radio frequency antenna.
As shown in fig. 3, fig. 3 is another schematic structural diagram of an electronic device according to an embodiment of the present application. The rf module 104 includes a first bidirectional coupler 1041, a first amplifier 1042 and a radio frequency transceiver 1043, which are connected in sequence, wherein the first bidirectional coupler 1041 is connected to the first antenna 111, the radio frequency transceiver 1043 is connected to the control circuit 101, and the control circuit 101 is configured to control the electronic device 100 to perform communication according to a radio frequency signal fed back by the radio frequency transceiver 1043.
The proximity module 105 includes a second bidirectional coupler 1051, a second amplifier 1052 and a signal generator 1053, which are connected in sequence, wherein the second bidirectional coupler 1051 is coupled to the second amplifier 1052, the control circuit 101 and the second antenna 112, respectively, the second bidirectional coupler 1051 is configured to detect a standing wave ratio of the second antenna 112, and the 101 control circuit is configured to determine a proximity distance between the obstacle and the electronic device 100 according to the standing wave ratio of the second antenna 112 fed back by the second bidirectional coupler 1051, so as to control the electronic device 100 according to the proximity distance.
The second bidirectional coupler 1501 includes a forward coupler and a backward coupler, wherein the forward coupler is used for collecting the detection signal emitted by the signal generator 1053, and the backward coupler is used for collecting the reflected signal of the detection signal reflected by the obstacle.
Specifically, the signal generator 1053 generates a detection signal, and the detection signal processed by the second amplifier 1052 is transmitted to the second antenna 112 through the forward coupler in the second bidirectional coupler 1501 to be transmitted to the outside through the second antenna 112. When the detection signal transmitted to the outside encounters an obstacle such as a human body, a reflected signal is formed and returned to the second antenna 112. The forward coupler in the second bidirectional coupler 1501 is configured to collect a detection signal transmitted to the second antenna 112 by the signal generator 1053, the backward coupler is configured to collect a reflection signal of the detection signal reflected to the second antenna 112 by an obstacle, then the second bidirectional coupler 1501 transmits parameters of the collected detection signal and the collected reflection signal to the control circuit 101, so as to determine a standing-wave ratio of the second antenna 112, then determine an approaching distance between the electronic device 100 and the obstacle such as the human body according to a corresponding relationship between the standing-wave ratio and the approaching distance in the pre-stored parameters, and then the control circuit 101 performs corresponding control on the electronic device 100 according to the approaching distance.
Specifically, the standing wave ratio of an antenna represents the square of the reflected power of the antenna relative to the incident power. In general, if the standing wave ratio of an antenna is 1, it means that the signal of the antenna is not reflected; if the standing-wave ratio of the antenna is between 1.1 and 1.5, the signal reflection of the antenna is considered to be small; if the standing wave ratio of the antenna is larger than 1.5, the signal reflection of the antenna is larger.
For example, when the detection signal is less than 1GHz, the approach distance is greater than 1 cm when the standing-wave ratio is between 1 and 1.5; when the standing-wave ratio is between 1.5 and 2.5, the approach distance is 0 to 1 centimeter; when the standing-wave ratio is more than 2.5, the approach distance is 0 cm.
For another example, when the detection signal is greater than 1GHz, the approach distance is greater than 1 centimeter when the standing-wave ratio is between 1 and 1.5; when the standing-wave ratio is between 1.5 and 3.5, the approach distance is 0 to 1 centimeter; when the standing-wave ratio is more than 3.5, the approach distance is 0 cm.
It should be noted that the correspondence between the standing-wave ratio and the approaching distance is not limited to the above, and may be flexibly adjusted by the actual antenna power and the element performance.
In some embodiments, the rf module 104 and the proximity module 105 may share the same bi-directional coupler, which is operated with a gap in the rf module 104 operation to accommodate the proximity module 105 operation. For example, as shown in fig. 4, fig. 4 is another schematic structural diagram of the electronic device provided in the embodiment of the present application. The electronic device 100 includes a third bidirectional coupler 109, the third bidirectional coupler 109 is respectively coupled to the rf module 104, the proximity module 105, the first antenna 111, and the second antenna 112, and the control circuit 101 is configured to control the third bidirectional coupler 109 to detect a standing-wave ratio of the second antenna 112 when detecting that the first antenna 111 is in the idle period.
In some embodiments, as shown in fig. 5, fig. 5 is another schematic structural diagram of an electronic device provided in the embodiments of the present application. The first antenna 111 and the second antenna 112 are disposed on opposite sides of the electronic device 100, the control circuit 101 is configured to control the first antenna 111 and the second antenna 112 to transmit a detection signal when detecting that the first antenna 111 is in an idle period, and control the third bidirectional coupler 109 to detect a standing-wave ratio of the first antenna 111 and a standing-wave ratio of the second antenna 112, and the control circuit 101 is configured to determine a landscape mode of the electronic device 100 according to the standing-wave ratio of the first antenna 111 and the standing-wave ratio of the second antenna 112. For example, the first antenna 111 and the second antenna 112 are respectively disposed at the top end and the bottom end of the electronic device 100, and when standing wave changes are generated at the two antennas simultaneously, it can be determined that a user holds the mobile phone in a landscape mode. The proximity function implemented by the first antenna 111 and the second antenna 112 may be utilized to determine the landscape mode, so as to replace the detection function of the original landscape sensor.
In some embodiments, the electronic device 100 includes a display screen 103, and the control circuit 101 is configured to adjust a display state of the display screen 103 according to the proximity distance. For example, as shown in fig. 6, when the distance between the electronic device 100 and the human body is large, the control circuit 101 controls the display screen 103 of the electronic device 100 to be in a bright screen state, and when the distance between the electronic device 100 and the human body is small, the control circuit 101 controls the display screen 103 of the electronic device 100 to be in an off screen state, so that an error operation caused when the human body unintentionally touches the display screen 103 is avoided. For example, as shown in fig. 7, the first antenna 111 and the second antenna 112 may be disposed on the same side of the electronic device 100, and as such, disposed on the top end of the electronic device 100, when the distance between the electronic device 100 and the human body is large, the control circuit 101 controls the display screen 103 of the electronic device 100 to be in the on-screen state, and when the distance between the electronic device 100 and the human body is small, the control circuit 101 controls the display screen 103 of the electronic device 100 to be in the off-screen state.
The control circuit 101 of the electronic device 100 may be a processor of the electronic device 100, or may be a processor or a processing chip that is used for the radio frequency switch 108 alone. The control circuit 101 may be integrated directly on the printed circuit board.
The control circuit 101 may include a detection processing unit and an application processor AP, where the rf signal of the first antenna 111 fed back by the rf module 104 is directly processed by the application processor AP to control the electronic device 100 to perform communication. The detection signal and the reflected signal of the second antenna 112 fed back by the proximity module 105 are transmitted to the detection processing unit, the detection processing unit obtains a corresponding proximity control instruction according to a standing-wave ratio obtained by the detection signal and the reflected signal of the second antenna 112 and a corresponding relationship between a pre-stored standing-wave ratio and the proximity distance, and then the AP end of the application processor controls the electronic device 100 to implement the proximity function according to the proximity control instruction.
The electronic device 100 provided in the embodiment of the present application includes a first antenna 111, a second antenna 112, a radio frequency module 104, a proximity module 105, and a control circuit 101, where the control circuit 101 is coupled to the first antenna 111, the second antenna 112, the radio frequency module 104, and the proximity module 105, respectively; the radio frequency module 104 is connected to the first antenna 111, the first antenna 111 serves as a radio frequency antenna, and the radio frequency antenna is used for receiving and transmitting radio frequency signals; the proximity module 105 is connected to a second antenna 112, the second antenna 112 serves as a proximity antenna, and the proximity antenna is used for transceiving a detection signal, wherein the radio frequency signal is different from the signal frequency band of the detection signal; the control circuit 101 is used for controlling the proximity module 105 to detect the standing wave ratio of the second antenna 112 and determine the proximity distance between the obstacle and the electronic device 100 according to the standing wave ratio of the second antenna 112 so as to control the electronic device 100 according to the proximity distance. The embodiment of the application is used for realizing the proximity function by independently arranging the antenna in the electronic equipment, the proximity function of the proximity sensor can be replaced by the standing-wave ratio of the independent antenna under the condition of omitting the proximity sensor, the structure compactness can be improved, and the screen occupation ratio is improved.
It should be noted that the number of antennas is not limited to three, and the electronic device 100 may include four, five, or more antennas. The following description will be made in detail by taking two antennas as an example.
Referring to fig. 8, fig. 8 is a schematic flow chart of a proximity detection method according to an embodiment of the present disclosure. The method is applied to an electronic device, the electronic device includes a first antenna, a second antenna, a radio frequency module and a proximity module, the radio frequency module is connected to the first antenna, the first antenna serves as a radio frequency antenna, the radio frequency antenna is used for transceiving radio frequency signals, the proximity module is connected to the second antenna, the second antenna serves as a proximity antenna, the proximity antenna is used for transceiving detection signals, and the radio frequency signals and the detection signals have different signal frequency bands, and the method includes:
Wherein, the detection signal transmitted to the second antenna 112 by the detection proximity module 105 and the reflected signal of the detection signal reflected by the obstacle are detected to obtain the standing wave ratio of the second antenna 112.
And step 102, determining the approaching distance between the obstacle and the electronic equipment according to the standing wave ratio of the second antenna.
Wherein, when the standing-wave ratio is between 1 and 1.5, the approach distance is more than 1 centimeter; and when the standing-wave ratio is more than 1.5, the approach distance is less than 1 centimeter.
For example, when the proximity detection signal is less than 1GHz, the proximity distance is greater than 1 cm when the standing wave ratio is between 1-1.5; when the standing-wave ratio is between 1.5 and 2.5, the approach distance is 0 to 1 centimeter; when the standing-wave ratio is more than 2.5, the approach distance is 0 cm.
For another example, when the proximity detection signal is greater than 1GHz, the proximity distance is greater than 1 centimeter when the standing-wave ratio is between 1 and 1.5; when the standing-wave ratio is between 1.5 and 3.5, the approach distance is 0 to 1 centimeter; when the standing-wave ratio is more than 3.5, the approach distance is 0 cm.
It should be noted that the correspondence between the standing-wave ratio and the approaching distance is not limited to the above, and may be flexibly adjusted by the actual antenna power and the element performance.
And 103, controlling the electronic equipment according to the approaching distance.
For example, when the distance between the electronic apparatus 100 and the human body is large, the control circuit 101 controls the display screen 103 of the electronic apparatus 100 to be in the on state, and when the distance between the electronic apparatus 100 and the human body is small, the control circuit 101 controls the display screen 103 of the electronic apparatus 100 to be in the off state.
The proximity detection method provided by the embodiment of the application is applied to an electronic device 100, wherein the electronic device 100 includes a first antenna 111, a second antenna 112, a radio frequency module 104 and a proximity module 105, the radio frequency module 104 is connected to the first antenna 111, the first antenna 111 serves as a radio frequency antenna, and the radio frequency antenna is used for receiving and transmitting radio frequency signals; the proximity module 105 is connected to the second antenna 112, the second antenna 112 serves as a proximity antenna, and the proximity antenna is configured to transmit and receive a detection signal, where a frequency band of the radio frequency signal is different from a frequency band of the detection signal, and determine a proximity distance between the obstacle and the electronic device 100 according to the standing-wave ratio of the second antenna 112, so as to control the electronic device 100 according to the proximity distance. The embodiment of the application is used for realizing the proximity function by independently arranging the antenna in the electronic equipment, the proximity function of the proximity sensor can be replaced by the standing-wave ratio of the independent antenna under the condition of omitting the proximity sensor, the structure compactness can be improved, and the screen occupation ratio is improved.
An embodiment of the present application further provides an electronic device, as shown in fig. 9, the electronic device 100 includes: processor 101, memory 102, display screen 103, radio frequency module 104, proximity module 105, input unit 106, power supply 107, first antenna 111, and second antenna 112. The processor 101 is electrically connected to the memory 102, the display screen 103, the rf module 104, the proximity module 105, the input unit 106, the power supply 107, the first antenna 111, and the second antenna 112, respectively. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 9 does not constitute a limitation of the electronic device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
The processor 101 is a control center of the electronic device 100, connects various parts of the whole electronic device by using various interfaces and lines, and executes various functions of the electronic device and processes data by running or loading an application program stored in the memory 102 and calling data stored in the memory 102, thereby performing overall monitoring of the electronic device.
The display screen 103 may be used to display information entered by or provided to the user as well as various graphical user interfaces of the electronic device, which may be made up of graphics, text, icons, video, and any combination thereof. When the display screen 103 is a touch display screen, it can also be used as a part of the input unit to implement an input function.
The rf module 104 may be configured to transmit and receive rf signals to establish wireless communication with a network device or other electronic devices through wireless communication, and transmit and receive signals to and from the network device or other electronic devices.
The proximity module 105 may be used to implement a proximity function.
The input unit 106 may be used to receive input numbers, character information, or user characteristic information (e.g., fingerprint), and generate keyboard, mouse, joystick, optical, or trackball signal inputs related to user settings and function control. The input unit 106 may include a fingerprint recognition module.
The power supply 107 is used to power the various components of the electronic device 100. In some embodiments, the power supply 107 may be logically connected to the processor 101 through a power management system, such that functions of managing charging, discharging, and power consumption are implemented through the power management system.
The first antenna 111 may be a radio frequency antenna for transceiving radio frequency signals.
The second antenna 112, which can be a proximity antenna, is used for transceiving a detection signal, wherein the detection signal is different from the rf signal in signal frequency band.
Although not shown in fig. 9, the electronic device 100 may further include a camera, an audio circuit, a bluetooth module, and the like, which are not described in detail herein.
In this embodiment, the processor 101 in the electronic device 100 loads instructions corresponding to processes of one or more application programs into the memory 102, and the processor 101 runs the application programs stored in the memory 102, so as to implement various functions as follows:
detecting a standing wave ratio of the second antenna;
determining a proximity distance between an obstacle and the electronic device according to the standing-wave ratio of the second antenna;
and controlling the electronic equipment according to the approaching distance.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The electronic device and the proximity detection method provided by the embodiments of the present application are described in detail above, and specific examples are applied herein to illustrate the principles and implementations of the present application, and the description of the embodiments above is only used to help understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. An electronic device, comprising a first antenna, a second antenna, a radio frequency module, a proximity module, and a control circuit, the control circuit being coupled to the first antenna, the second antenna, the radio frequency module, and the proximity module, respectively;
the radio frequency module is connected with the first antenna, the first antenna is used as a radio frequency antenna, and the radio frequency antenna is used for receiving and transmitting radio frequency signals;
the proximity module is connected with the second antenna, the second antenna is used as a proximity antenna, and the proximity antenna is used for receiving and transmitting a detection signal, wherein the radio frequency signal is different from the signal frequency band of the detection signal;
the control circuit is used for controlling the proximity module to detect the standing wave ratio of the second antenna and determining the proximity distance between an obstacle and the electronic equipment according to the standing wave ratio of the second antenna so as to control the electronic equipment according to the proximity distance;
the electronic device further comprises a third bidirectional coupler, and the third bidirectional coupler is coupled with the radio frequency module, the proximity module, the first antenna and the second antenna respectively; the first antenna and the second antenna are arranged on two opposite sides of the electronic device, the control circuit is used for controlling the first antenna and the second antenna to transmit the detection signal when detecting that the first antenna is in an idle period, controlling the third bidirectional coupler to detect the standing-wave ratio of the first antenna and the standing-wave ratio of the second antenna, and judging the transverse screen mode of the electronic device according to the standing-wave ratio of the first antenna and the standing-wave ratio of the second antenna.
2. The electronic device of claim 1, further comprising a control switch, wherein the control switch comprises a first port, a second port, a third port, and a fourth port, the first port coupled with the radio frequency module, the second port coupled with the proximity module, the third port coupled with the first antenna, the fourth port coupled with the second antenna, the first port in communication with the third port, the second port in communication with the fourth port.
3. The electronic device of claim 2, wherein the control circuit is configured to detect signal strengths of the first antenna and the second antenna, and if the signal strength of the first antenna is smaller than the signal strength of the second antenna, the control circuit controls the control switch to switch the first antenna to be a proximity antenna and the second antenna to be a radio frequency antenna.
4. The electronic device according to any of claims 1-3, wherein the RF module comprises a first bi-directional coupler, a first amplifier and an RF transceiver connected in sequence, wherein the first bi-directional coupler is connected to the first antenna, and the RF transceiver is connected to the control circuit, and the control circuit is configured to control the electronic device to perform communication according to an RF signal fed back by the RF transceiver.
5. The electronic device of claim 4, wherein the proximity module comprises a second bidirectional coupler, a second amplifier and a signal generator, which are connected in sequence, wherein the second bidirectional coupler is respectively coupled to the second amplifier, the control circuit and the second antenna, the second bidirectional coupler is configured to detect a standing-wave ratio of the second antenna, and the control circuit is configured to determine a proximity distance between an obstacle and the electronic device according to the standing-wave ratio of the second antenna fed back by the second bidirectional coupler, so as to control the electronic device according to the proximity distance.
6. The electronic device of claim 5, wherein the second bidirectional coupler comprises a forward coupler and a backward coupler, wherein the forward coupler is configured to collect a detection signal emitted by the signal generator, and the backward coupler is configured to collect a reflected signal of the detection signal reflected back through the obstacle.
7. The electronic device of claim 1, wherein the electronic device includes a display screen, the control circuit to adjust a display state of the display screen based on the proximity distance.
8. The electronic device of claim 1, wherein the proximity distance is greater than 1 centimeter when the standing wave ratio is between 1-1.5; and when the standing-wave ratio is more than 1.5, the approach distance is less than 1 centimeter.
9. A proximity detection method is applied to electronic equipment, and is characterized in that the electronic equipment comprises a first antenna, a second antenna, a radio frequency module and a proximity module, the radio frequency module is connected with the first antenna, the first antenna is used as a radio frequency antenna, the radio frequency antenna is used for receiving and transmitting radio frequency signals, the proximity module is connected with the second antenna, the second antenna is used as a proximity antenna, and the proximity antenna is used for transceiving detection signals, wherein the radio frequency signal is different from the detection signal in signal frequency band, the electronic device further comprises a third bidirectional coupler, the third bi-directional coupler is coupled to the radio frequency module, the proximity module, the first antenna, and the second antenna, respectively, the first antenna and the second antenna are arranged on two opposite sides of the electronic device, and the method comprises the following steps:
detecting a standing wave ratio of the second antenna;
determining a proximity distance between an obstacle and the electronic device according to the standing-wave ratio of the second antenna;
controlling the electronic device according to the approach distance;
the method further comprises the following steps: and when the first antenna is detected to be in an idle period, controlling the first antenna and the second antenna to transmit the detection signal, controlling the third bidirectional coupler to detect the standing-wave ratio of the first antenna and the standing-wave ratio of the second antenna, and judging the horizontal screen mode of the electronic equipment according to the standing-wave ratio of the first antenna and the standing-wave ratio of the second antenna.
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| CN109862153B (en) * | 2019-01-21 | 2020-11-20 | 维沃移动通信有限公司 | Method for preventing mistaken touch and mobile terminal |
| WO2021061165A1 (en) * | 2019-09-27 | 2021-04-01 | Google Llc | Proximity detection using calculated voltage standing wave ratio readings |
| CN112436862B (en) * | 2020-11-24 | 2022-08-02 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
| CN112615949B (en) * | 2020-12-14 | 2022-09-16 | Oppo（重庆）智能科技有限公司 | Proximity detection device, terminal, and communication method |
| CN112736413B (en) * | 2020-12-28 | 2023-06-23 | 联想(北京)有限公司 | Antenna device and electronic equipment |
| CN112947774B (en) * | 2021-01-28 | 2024-07-23 | 维沃移动通信有限公司 | Intelligent pen and electronic equipment |
| CN115085756B (en) * | 2021-03-12 | 2023-09-22 | 青岛海信移动通信技术有限公司 | Electronic equipment and radio frequency access switching method thereof |
| US12013455B2 (en) * | 2021-03-12 | 2024-06-18 | Apple Inc. | Electronic devices with background-cancelled ultra short range object detection |
| CN114025415B (en) * | 2021-10-14 | 2024-06-04 | 青岛海信移动通信技术有限公司 | SAR reduction method and terminal equipment |
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