CN107947825B - Antenna selection circuit and mobile terminal - Google Patents

Abstract

The embodiment of the present invention discloses an antenna selection circuit and a mobile terminal. The antenna selection circuit includes a main WiFi antenna, an auxiliary WiFi antenna, a switch, a control module and a WiFi module. The switch includes a selection end, a main antenna connection end, and an auxiliary antenna connection The main antenna connection end is connected to the main WiFi antenna, and the auxiliary antenna connection end is connected to the auxiliary WiFi antenna; the output end of the control module is connected to the control end, the input end of the control module is connected to the signal detection end of the WiFi module, and the input end of the WiFi module Connect the selection terminal; the control module is used to detect the WiFi signal strength received by the WiFi module, and to send a switching signal to the switch when the detected WiFi signal strength is less than the preset strength threshold, and the switching signal is used to control the switch between the switch and the WiFi module. Connected WiFi antenna. In the embodiment of the present invention, the WiFi antenna connected to the WiFi module can be switched by detecting the strength of the WiFi signal, thereby ensuring the strength of the WiFi signal received by the mobile terminal.

Description

Antenna selection circuit and mobile terminal

technical field

The present invention relates to the technical field of terminals, in particular to an antenna selection circuit and a mobile terminal.

Background technique

At present, the WiFi antennas of mobile terminals such as mobile phones are generally set at the top or bottom of the mobile phone. When the mobile phone is in the horizontal screen state, the WiFi antenna is easily held in the palm of the hand, which may lead to poor antenna performance and weak WiFi signal.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide an antenna selection circuit and a mobile terminal, which can improve the problem of weak WiFi signals.

A first aspect of the embodiments of the present invention provides an antenna selection circuit, the antenna selection circuit includes a main WiFi antenna, a secondary WiFi antenna, a switch, a control module, and a WiFi module, wherein:

The switch includes a selection end, a main antenna connection end, an auxiliary antenna connection end and a control end, the main antenna connection end is connected to the main WiFi antenna, and the auxiliary antenna connection end is connected to the auxiliary WiFi antenna; the control The output end of the module is connected to the control end, the input end of the control module is connected to the signal detection end of the WiFi module, and the input end of the WiFi module is connected to the selection end;

The control module is configured to detect the WiFi signal strength received by the WiFi module, and to send a switching signal to the switch when it is detected that the WiFi signal strength is less than a preset strength threshold, where the switching signal is used to control The switch switches the WiFi antenna communicated with the WiFi module.

A second aspect of the embodiments of the present invention provides a mobile terminal, including the antenna selection circuit of the first aspect of the embodiments of the present invention.

A third aspect of the embodiments of the present invention provides an antenna selection method, including:

Detect the WiFi signal strength received by the WiFi module;

When it is detected that the WiFi signal strength is less than the preset strength threshold, a switching signal is sent to the switch, and the switch signal is used to control the switch to switch the WiFi antenna connected to the WiFi module.

In the embodiment of the present invention, the control module can detect the WiFi signal strength received by the WiFi module, and send a switching signal to the switch when it is detected that the WiFi signal strength is less than a preset strength threshold, and the switching signal is used to control the switch to switch between the WiFi module and the switch. Connected WiFi antenna. In the embodiment of the present invention, the WiFi antenna connected to the WiFi module can be switched by detecting the strength of the WiFi signal, thereby ensuring the strength of the WiFi signal received by the mobile terminal.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic structural diagram of an antenna selection circuit disclosed in an embodiment of the present invention;

2a is a schematic diagram of the relative positions of a primary WiFi antenna and a secondary WiFi antenna disclosed in an embodiment of the present invention;

2b is a schematic diagram of the relative positions of another primary WiFi antenna and a secondary WiFi antenna disclosed in an embodiment of the present invention;

3a is a schematic structural diagram of another antenna selection circuit disclosed in an embodiment of the present invention;

3b is a schematic structural diagram of another antenna selection circuit disclosed in an embodiment of the present invention;

3c is a schematic structural diagram of another antenna selection circuit disclosed in an embodiment of the present invention;

4 is a schematic structural diagram of a mobile terminal disclosed in an embodiment of the present invention;

5 is a schematic structural diagram of another mobile terminal disclosed in an embodiment of the present invention;

6 is a schematic structural diagram of another mobile terminal disclosed in an embodiment of the present invention;

7 is a schematic flowchart of an antenna selection method disclosed in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another mobile terminal disclosed in an embodiment of the present invention.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes Other steps or units inherent in a process, product or equipment.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

In addition, the mobile terminals involved in the embodiments of the present invention may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to wireless modems, as well as various forms of user equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal device (terminal device) and so on. For the convenience of description, the devices mentioned above are collectively referred to as mobile terminals.

The embodiments of the present invention will be described in detail below.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an antenna selection circuit disclosed in an embodiment of the present invention. As shown in FIG. 1, the antenna selection circuit includes a main WiFi antenna 11, a secondary WiFi antenna 12, a switch 21, and a control module. 31 and WiFi module 41, wherein:

The switch 21 includes a selection end 211 , a main antenna connection end 212 , an auxiliary antenna connection end 213 and a control end 214 . The main antenna connection end 212 is connected to the main WiFi antenna 11 , and the auxiliary antenna connection end 213 is connected to the auxiliary WiFi antenna 12 ; The output terminal 311 is connected to the control terminal 214, the input terminal 312 of the control module 31 is connected to the signal detection terminal 412 of the WiFi module 41, and the input terminal 411 of the WiFi module 41 is connected to the selection terminal 211;

The control module 311 is used to detect the WiFi signal strength received by the WiFi module 41, and is used to send a switching signal to the switch 21 when the detected WiFi signal strength is less than a preset strength threshold, and the switching signal is used to control the switch 21 to switch between the WiFi module 41 connected WiFi antennas. For example, the preset signal strength threshold can be set to -90dbm.

The antenna selection circuit in the embodiment of the present invention can be applied to a mobile terminal such as a mobile phone. For the convenience of description, a mobile phone is used as an example for description in some of the following embodiments.

The primary WiFi antenna 11 and the secondary WiFi antenna 12 in the embodiment of the present invention are not shared with other antennas (eg, primary antenna, diversity antenna, GPS antenna, etc.), and are antennas only used by the WiFi module. That is to say, the mobile phone in the embodiment of the present invention is provided with two WiFi antennas dedicated to receiving WiFi signals: a main WiFi antenna 11 and a secondary WiFi antenna 12 . The positional relationship between the main WiFi antenna 11 and the auxiliary WiFi antenna 12 may be as follows: the antenna radiator of the main WiFi antenna 11 and the antenna radiator of the auxiliary WiFi antenna 12 are arranged on opposite sides of the frame of the mobile phone. As shown in FIG. 2a, FIG. 2a is a schematic diagram of relative positions of a primary WiFi antenna and a secondary WiFi antenna disclosed in an embodiment of the present invention. As can be seen from the left figure in FIG. 2a, the antenna radiator of the main WiFi antenna 11 can be set at the top of the frame of the mobile phone, and the antenna radiator of the auxiliary WiFi antenna 12 can be set at the bottom of the frame of the mobile phone. It can be seen from the right figure in FIG. 2a that the antenna radiator of the main WiFi antenna 11 can be set on the left side of the frame of the mobile phone, and the antenna radiator of the auxiliary WiFi antenna 12 can be set on the right side of the frame of the mobile phone.

Optionally, the positional relationship between the main WiFi antenna 11 and the auxiliary WiFi antenna 12 may also be as follows: the antenna radiator of the main WiFi antenna 11 and the antenna radiator of the auxiliary WiFi antenna 12 are arranged on adjacent sides of the mobile phone frame. As shown in FIG. 2b, FIG. 2b is a schematic diagram of relative positions of another primary WiFi antenna and a secondary WiFi antenna disclosed in an embodiment of the present invention. It can be seen from the left figure in FIG. 2b that the antenna radiator of the main WiFi antenna 11 can be set on the top of the frame of the mobile phone, and the antenna radiator of the auxiliary WiFi antenna 12 can be set on the right side of the frame of the mobile phone. It can be seen from the right figure in FIG. 2b that the antenna radiator of the main WiFi antenna 11 can be set on the top of the frame of the mobile phone, and the antenna radiator of the auxiliary WiFi antenna 12 can be set on the left side of the frame of the mobile phone.

In scenarios where the user needs to use the phone in landscape orientation, for example, when watching videos in full screen or playing games in full screen. The user's palm can easily block the antenna radiator part of the main WiFi antenna or the auxiliary WiFi antenna, resulting in poor WiFi signals received by the main WiFi antenna or the auxiliary WiFi antenna. Based on the above scenario, embodiments of the present invention provide an antenna selection circuit and an antenna selection method, which can ensure the strength of a WiFi signal received by a mobile terminal.

In this embodiment of the present invention, the switch 21 may be a single-pole double-throw switch. As shown in FIG. 3 a , the control module 31 may send a switching signal to the switch 21 to control the selection terminal 211 of the switch 21 to be connected to the main antenna connection terminal 212 or the auxiliary antenna connection terminal 213 . At the same time, the selection terminal 211 of the switch 21 can only select and connect one of the main antenna connection terminal 212 and the auxiliary antenna connection terminal 213 .

Optionally, the switching signal includes a first switching signal or a second switching signal, and the first switching signal is specifically used to switch the WiFi module 41 to connect to the secondary WiFi antenna 12 when the WiFi module 41 is connected to the primary WiFi antenna 11 . Specifically, the switch 21 is a SPDT switch as an example, please refer to the schematic diagram of the antenna switching circuit shown in FIG. 3b. In the initial state, the WiFi module 41 is connected to the main WiFi antenna 11, and the selection terminal 211 of the switch 21 is connected to the main WiFi The antenna connection terminal 212 is connected, when the control module 31 detects that the WiFi signal strength received by the WiFi module 41 is less than the preset strength threshold, the control module 31 sends a first switching signal to the switch 21, so that the selection terminal 211 of the switch 21 and The auxiliary antenna connection end 213 is connected, so as to connect the WiFi module 41 with the auxiliary WiFi antenna 12 , thereby realizing the switching of the WiFi antenna connected by the WiFi module from the main WiFi antenna 11 to the auxiliary WiFi antenna 12 .

The second switching signal is specifically used to switch the WiFi module 41 to be connected to the main WiFi antenna 11 when the WiFi module 41 is connected to the secondary WiFi antenna 12 .

Specifically, the switch 21 takes a SPDT switch as an example. Refer to the schematic diagram of the antenna switching circuit shown in FIG. 3c. In the initial state, the WiFi module 41 is connected to the auxiliary WiFi antenna 12, and the selection terminal 211 of the switch 21 is connected to the auxiliary WiFi antenna 12. The antenna connection terminal 213 is connected, when the control module 31 detects that the WiFi signal strength received by the WiFi module 41 is less than the preset strength threshold, the control module 31 sends a second switching signal to the switch 21, so that the selection terminal 211 of the switch 21 is connected to the switch 21. The main antenna connection end 212 is connected, thereby connecting the WiFi module 41 to the main WiFi antenna 11 , thereby realizing the switching of the WiFi antenna connected by the WiFi module from the auxiliary WiFi antenna 12 to the main WiFi antenna 11 .

The above example takes the switch 21 as a single-pole double-throw switch as an example. Optionally, the switch 21 may also include a first switch tube and a second switch tube, and correspondingly, the switch 21 may include two control terminals 214 . The first end of the first switch tube is connected to the selection terminal 211 of the switch 21 , the second end of the first switch tube is connected to the main antenna connection terminal 212 of the switch 21 , and the first end of the second switch tube is connected to the selection end of the switch 21 . Terminal 211, the second terminal of the second switch tube is connected to the auxiliary antenna connection terminal 213 of the switch 21, and the control terminals of the first switch tube are respectively connected to a control terminal. At the same time, the control module 31 only controls one of the two switches to be in a conducting state. The switch tube can be any one of a metal-oxide-semiconductor (MOS) field effect transistor, an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), a triode and other semiconductor switch tubes.

Optionally, as shown in FIG. 4 , FIG. 4 is a schematic structural diagram of a mobile terminal disclosed in an embodiment of the present invention. The antenna selection circuit 10 in FIG. 4 is applied to the mobile terminal 100. The mobile terminal 100 includes a gravity sensor 101. The control module 31 can be connected to the gravity sensor 101. The control module 31 can receive the gravity sensor 101 to detect the change of the center of gravity of the mobile terminal to determine the mobile terminal. Whether it is in landscape state.

The control module 31 is further configured to detect the WiFi signal strength received by the WiFi module 41 when the gravity sensor 101 detects that the mobile terminal 100 is in a horizontal screen state.

In the embodiment of the present invention, when the gravity sensor 101 detects that the mobile terminal 100 is in a horizontal screen state, at this time, it is easy to cause the main WiFi antenna 11 or the auxiliary WiFi antenna 12 of the mobile phone to be blocked by the user's palm and cause the user to hold both ends of the mobile phone. Affects the WiFi signal strength received by the WiFi module 41 . The control module 31 in the embodiment of the present invention does not need to detect the WiFi signal strength received by the WiFi module 41 in real time, and only needs to detect in a specific application scenario (eg, the mobile terminal is in a landscape state), which can save the power consumption of the mobile terminal.

Optionally, as shown in FIG. 5 , FIG. 5 is a schematic structural diagram of another mobile terminal disclosed in an embodiment of the present invention. The mobile terminal 100 further includes a pressure sensor 102 disposed on the frame of the mobile terminal 100 , and the pressure sensor 102 can be connected to the control module 31 .

The control module 31 is further configured to detect the WiFi signal strength received by the WiFi module when the pressure value detected by the pressure sensor 102 is greater than the preset pressure threshold.

In the embodiment of the present invention, when the pressure value of the frame of the mobile terminal 100 detected by the pressure sensor 102 is greater than the preset pressure threshold, at this time, it is easy to cause the user to hold the two ends of the frame of the mobile phone, causing the main WiFi antenna 11 of the mobile phone or the auxiliary WiFi antenna 11 of the mobile phone. The WiFi antenna 12 is blocked by the user's palm, which affects the WiFi signal strength received by the WiFi module 41 . In this embodiment of the present invention, the control module 31 does not need to detect the WiFi signal strength received by the WiFi module 41 in real time, and only needs to perform detection in a specific application scenario (for example, a scenario in which both ends of the mobile phone frame are held by the user), which can save the mobile terminal's power consumption. For example, the preset pressure threshold may be set to 1 Newton.

Optionally, as shown in FIG. 6 , FIG. 6 is a schematic structural diagram of another mobile terminal disclosed in an embodiment of the present invention. The mobile terminal 100 further includes a display screen 103 , and the display screen 103 can be connected to the control module 31 .

The control module 31 is further configured to output prompt information through the display screen 103 when it is detected that the WiFi signal strength is lower than the preset strength threshold, and the prompt information is used to prompt the user whether the antenna area of the mobile terminal 100 is blocked.

In the embodiment of the present invention, when the gravity sensor 101 detects that the mobile terminal 100 is in a horizontal screen state, the control module 31 detects the WiFi signal strength, and when the control module 31 detects that the WiFi signal strength is less than the preset strength threshold, a prompt message is output through the display screen 103 , the prompt information is used to prompt the user whether the antenna area of the mobile terminal 100 is blocked. In this embodiment of the present invention, when the control module 31 detects that the WiFi signal strength is lower than the preset strength threshold, prompt information can be output through the display screen to prompt the user whether the antenna is covered by the hand. For example, the prompt information can be "Please confirm whether to hold the antenna area on the top of the mobile phone. If so, please remove your hand so as not to affect the WiFi signal". The prompt information in the embodiment of the present invention can timely remind the user whether to block the antenna with his hand when it is detected that the WiFi signal becomes weak.

Optionally, the control module 31 is further configured to send a switching signal to the switching switch 21 when it is detected that the WiFi signal strength weakening ratio is greater than a preset ratio value.

In the embodiment of the present invention, the weakening ratio of the WiFi signal strength is: the difference between the current WiFi signal strength and the initial WiFi signal strength/the current WiFi signal strength. The preset scale threshold can be set to 30%. For example, if the initial WiFi signal strength is -50dbm and the current WiFi signal strength is -100dbm, the calculated WiFi signal strength reduction ratio is 50%. The detection time of the initial WiFi signal strength is a period of time before the current time. For example, the difference between the detection time of the initial WiFi signal strength and the detection time of the current WiFi signal strength is 5 minutes. By detecting the weakening ratio of the WiFi signal strength, in the case that the WiFi signal strength itself is very weak, it can be more accurately determined whether the antenna area of the mobile terminal is blocked.

Optionally, the control module 31 is further configured to determine the signal strength threshold corresponding to the foreground application currently running on the mobile terminal according to the corresponding relationship between the foreground application and the signal strength threshold, and use the signal strength threshold corresponding to the foreground application currently running on the mobile terminal as the signal strength threshold. Preset intensity threshold.

Optionally, the control module 31 further includes a memory, and the memory is used for storing the corresponding relationship between the foreground application and the signal strength threshold.

In the implementation of the present invention, the memory may be a non-volatile memory. Different foreground applications require different minimum WiFi signal strengths. For example, game applications require higher WiFi signal strengths, while instant messaging applications require relatively lower WiFi signal strengths. The correspondence between the foreground application and the signal strength threshold may be preset and stored in the memory of the control module 31 . As long as the current WiFi signal strength is greater than the signal strength threshold corresponding to the currently running foreground application, WiFi antenna switching is not required. Avoid the problem of unstable WiFi signal caused by frequent switching of WiFi antennas.

Optionally, the control module 31 is further configured to stop sending the switching signal to the switching switch 21 when the number of times of sending the switching signal to the switching switch reaches the preset number of times within the preset time period.

In the embodiment of the present invention, for example, the preset time period may be set to within 1 minute or 2 minutes, and the preset number of times may be set to 3 times or 5 times. By implementing the embodiments of the present invention, frequent switching of WiFi antennas can be avoided, thereby avoiding the problem of unstable WiFi signals caused by frequent switching of WiFi antennas.

Please refer to FIG. 7 . FIG. 7 is a schematic flowchart of an antenna selection method disclosed in an embodiment of the present invention. FIG. 7 may be based on an antenna selection method provided on the apparatuses shown in FIGS. 1 to 6 . As shown in Figure 7, the antenna selection method includes the following steps:

701. The mobile terminal detects the WiFi signal strength received by the WiFi module.

702. When it is detected that the WiFi signal strength is less than a preset strength threshold, the mobile terminal sends a switching signal to the switch, where the switching signal is used to control the switch to switch the WiFi antenna connected to the WiFi module.

By implementing the method shown in FIG. 7 , the mobile terminal can switch the WiFi antenna connected to the WiFi module by detecting the strength of the WiFi signal, thereby ensuring the strength of the WiFi signal received by the mobile terminal.

An embodiment of the present invention also provides another mobile terminal, as shown in FIG. 8 . For convenience of description, only the part related to the embodiment of the present invention is shown. For specific technical details that are not disclosed, please refer to the embodiment of the present invention. circuit part. The mobile terminal can be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant, personal digital assistant), a POS (Point of Sales, a sales terminal), a vehicle-mounted computer, etc. The mobile terminal is a mobile phone as an example:

Please refer to FIG. 8 . FIG. 8 is a schematic structural diagram of another mobile terminal disclosed in an embodiment of the present invention. In FIG. 8 , a mobile phone is used as an example for description. Referring to FIG. 8 , the mobile phone includes: a radio frequency (RF) circuit 910 , a memory 920 , an input unit 930 , a display unit 940 , a sensor 950 , an audio circuit 960 , a wireless fidelity (WiFi) module 970 , and a processor 980 , and power supply 990 and other components. Those skilled in the art can understand that the structure of the mobile phone shown in FIG. 8 does not constitute a limitation on the mobile phone, and may include more or less components than the one shown, or combine some components, or arrange different components.

The following is a detailed introduction to each component of the mobile phone with reference to Figure 8:

RF circuitry 910 may be used for the reception and transmission of information. Typically, the RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuitry 910 may communicate with networks and other devices via wireless communications. The above-mentioned wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (General Packet Radio Service, GPRS), Code Division Multiple Access (Code Division Multiple Access) Access, CDMA), Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA), Long Term Evolution (Long Term Evolution, LTE), email, Short Messaging Service (Short Messaging Service, SMS) and the like. The RF circuit 910 may include part of the antenna selection circuit shown in FIGS. 1 to 4 in the embodiment of the present invention.

The memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 920 . The memory 920 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the mobile phone. Additionally, memory 920 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 may be used to receive inputted numerical or character information, and generate key signal input related to user setting and function control of the mobile phone. Specifically, the input unit 930 may include a fingerprint recognition module 931 and other input devices 932 . The fingerprint identification module 931 can collect the fingerprint data of the user on it. Besides the fingerprint recognition module 931 , the input unit 930 may also include other input devices 932 . Specifically, other input devices 932 may include, but are not limited to, one or more of a touch screen, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

The display unit 940 may be used to display information input by the user or information provided to the user and various menus of the mobile phone. The display unit 940 may include a display screen 941. Optionally, the display screen 941 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), or the like. Although in FIG. 8 , the fingerprint recognition module 931 and the display screen 941 are used as two independent components to realize the input and input functions of the mobile phone, but in some embodiments, the fingerprint recognition module 931 and the display screen 941 can be combined Integrated to realize the input and playback functions of the mobile phone.

The cell phone may also include at least one sensor 950, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 941 according to the brightness of the ambient light, and the proximity sensor may turn off the display screen 941 and/or when the mobile phone is moved to the ear. or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes), and can detect the magnitude and direction of gravity when it is stationary. games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc. Repeat.

The audio circuit 960, the speaker 961, and the microphone 962 can provide an audio interface between the user and the mobile phone. The audio circuit 960 can convert the received audio data into an electrical signal, and transmit it to the speaker 961, and the speaker 961 converts it into a sound signal for playback; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal, which is converted by the audio circuit 960 After receiving, the audio data is converted into audio data, and then processed by the audio data playback processor 980, and sent to, for example, another mobile phone through the RF circuit 910, or the audio data is played to the memory 920 for further processing.

WiFi is a short-distance wireless transmission technology. The mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 970. It provides users with wireless broadband Internet access. The WiFi module 970 in FIG. 8 may correspond to the WiFi modules shown in FIGS. 1 to 4 .

The processor 980 is the control center of the mobile phone, using various interfaces (for example, UART interface and USB interface) and lines to connect various parts of the entire mobile phone, by running or executing the software programs and/or modules stored in the memory 920, and calling The data stored in the memory 920 performs various functions of the mobile phone and processes data, so as to monitor the mobile phone as a whole. Optionally, the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor (AP) and a modem processor (Modem), wherein the application processor mainly processes the operating system, User interface and applications, etc., the modem processor mainly handles wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 980.

The mobile phone also includes a power supply 990 (such as a battery) for supplying power to various components. Preferably, the power supply can be logically connected to the processor 980 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system.

The mobile phone may further include a camera 9100, and the camera 9100 is used for capturing images and videos, and transmitting the captured images and videos to the processor 980 for processing.

The mobile phone may also have a Bluetooth module, etc., which will not be repeated here.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components may be combined or Integration into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

The embodiments of the present invention have been introduced in detail above, and specific examples are used to illustrate the principles and implementations of the present invention. The descriptions of the above embodiments are only used to help understand the core idea of the present invention; A person of ordinary skill, according to the idea of the present invention, will have changes in specific embodiments and application scopes. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (9)

1. An antenna selection circuit, characterized in that, the antenna selection circuit comprises a main WiFi antenna, an auxiliary WiFi antenna, a switch, a control module and a WiFi module, wherein: The switch includes a selection end, a main antenna connection end, an auxiliary antenna connection end and a control end, the main antenna connection end is connected to the main WiFi antenna, and the auxiliary antenna connection end is connected to the auxiliary WiFi antenna; the control The output end of the module is connected to the control end, the input end of the control module is connected to the signal detection end of the WiFi module, and the input end of the WiFi module is connected to the selection end, wherein the main WiFi antenna, the auxiliary WiFi The antennas are two WiFi antennas dedicated to receiving WiFi signals; The control module is configured to detect the WiFi signal strength received by the WiFi module, and to send a switching signal to the switch when it is detected that the WiFi signal strength is less than a preset strength threshold, where the switching signal is used to control The switch switches the WiFi antenna connected to the WiFi module; wherein, the control module is further configured to determine the signal strength threshold corresponding to the foreground application currently running on the mobile terminal according to the corresponding relationship between the foreground application and the signal strength threshold, and set the The signal strength threshold corresponding to the foreground application currently running on the mobile terminal is used as the preset strength threshold; Wherein, the antenna selection circuit is applied to a mobile terminal, and the antenna radiator of the main WiFi antenna and the antenna radiator of the auxiliary WiFi antenna are arranged on opposite sides of the frame of the mobile terminal. 2. The antenna selection circuit according to claim 1, wherein the mobile terminal comprises a gravity sensor, The control module is further configured to detect the WiFi signal strength received by the WiFi module when the gravity sensor detects that the mobile terminal is in a horizontal screen state. 3. The antenna selection circuit according to claim 2, wherein the mobile terminal further comprises a pressure sensor arranged on a frame of the mobile terminal, The control module is further configured to detect the WiFi signal strength received by the WiFi module when the pressure value detected by the pressure sensor is greater than a preset pressure threshold. 4. The antenna selection circuit according to claim 2, wherein the mobile terminal further comprises a display screen, The control module is further configured to output prompt information through the display screen when it is detected that the WiFi signal strength is less than the preset strength threshold, where the prompt information is used to prompt the user whether the antenna area of the mobile terminal is blocked . 5 . The antenna selection circuit according to claim 2 , wherein the control module is further configured to send the switching signal to the switching switch when it is detected that the WiFi signal strength weakening ratio is greater than a preset ratio value. 6 . . 6 . The antenna selection circuit according to claim 1 , wherein the control module further comprises a memory, and the memory is used for storing the corresponding relationship between the foreground application and the signal strength threshold. 7 . 7 . The antenna selection circuit according to claim 1 , wherein the control module is further configured to detect that the number of times of sending switching signals to the switch within a preset time period reaches a preset number of times, and stop sending the switching signal to the switch. 8 . The toggle switch sends a toggle signal. 8 . The antenna selection circuit according to claim 1 , wherein the switching signal comprises a first switching signal or a second switching signal, and the first switching signal is specifically used when the WiFi When the module is connected to the main WiFi antenna, the WiFi module is switched to be connected to the auxiliary WiFi antenna; the second switching signal is specifically used to switch the WiFi module to the auxiliary WiFi antenna when the WiFi module is connected to the auxiliary WiFi antenna. The WiFi module is switched to connect with the main WiFi antenna. 9. A mobile terminal, wherein the mobile terminal comprises the antenna selection circuit according to any one of claims 1-8.

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