CN114978211A

CN114978211A - Electronic device protection method and electronic equipment

Info

Publication number: CN114978211A
Application number: CN202210515746.0A
Authority: CN
Inventors: 徐国海
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-08-30
Anticipated expiration: 2042-05-12
Also published as: CN114978211B

Abstract

The application discloses an electronic device protection method and electronic equipment, and belongs to the field of electronic equipment. An electronic device protection method comprising: controlling a first radio frequency module to transmit a preset reference signal and controlling a second radio frequency module to transmit an analog interference signal, wherein the power of the analog interference signal is determined according to the power threshold of an electronic device of a receiving channel of the second radio frequency module; receiving a preset reference signal and an analog interference signal through a third radio frequency module, and detecting a first signal-to-noise ratio in a receiving channel of the third radio frequency module; detecting a second signal-to-noise ratio in a receiving channel of a third radio frequency module through the third radio frequency module under the condition that the first radio frequency module transmits a preset reference signal and the second radio frequency module stops transmitting the analog interference signal; and determining whether to take protective measures on the electronic device of the receiving channel of the second radio frequency module or not according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio.

Description

Electronic device protection method and electronic equipment

Technical Field

The application belongs to the field of electronic equipment, and particularly relates to an electronic device protection method and electronic equipment.

Background

With the development of electronic technology, the wireless network function of electronic devices is more and more emphasized. With the explosive growth of the number of electronic devices, the signal transmitted by each electronic device inevitably interferes with other electronic devices in the vicinity. The strength of a signal is typically reflected by the transmit power of the signal. A powerful interfering signal may even damage the electronics provided in the signal receiving circuit of the electronic device.

At present, electronic equipment often receives an interference signal first, and then judges whether the power of the interference signal is greater than a preset power threshold value, so as to determine whether protective measures need to be taken, and therefore, hysteresis exists for protection of electronic devices arranged on a signal receiving circuit, and the electronic devices may be damaged when the electronic equipment takes the protective measures.

Disclosure of Invention

An object of the embodiments of the present application is to provide an electronic device protection method and an electronic apparatus, which can solve a problem how to prevent a high-power interference signal from damaging an electronic device disposed on a signal receiving circuit.

In a first aspect, an embodiment of the present application provides an electronic device protection method, which is applied to an electronic device including a radio frequency component, where the radio frequency component includes a first radio frequency module, a second radio frequency module, and a third radio frequency module; the method comprises the following steps:

controlling the first radio frequency module to transmit a preset reference signal and controlling the second radio frequency module to transmit an analog interference signal, wherein the power of the analog interference signal is determined according to the power threshold of an electronic device of a receiving channel of the second radio frequency module;

receiving the preset reference signal and the analog interference signal through the third radio frequency module, and detecting a first signal-to-noise ratio in a receiving path of the third radio frequency module;

detecting, by the third radio frequency module, a second signal-to-noise ratio in a reception path of the third radio frequency module under a condition that the first radio frequency module transmits the preset reference signal and the second radio frequency module stops transmitting the analog interference signal;

and determining whether to take protective measures on the electronic device of the receiving channel of the second radio frequency module or not according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio.

In a second aspect, an embodiment of the present application provides an electronic device protection apparatus, which is applied to an electronic device including a radio frequency component, where the radio frequency component includes a first radio frequency module, a second radio frequency module, and a third radio frequency module; the device comprises:

the first control module is used for controlling the first radio frequency module to transmit a preset reference signal and controlling the second radio frequency module to transmit an analog interference signal, wherein the power of the analog interference signal is determined according to the power threshold of an electronic device of a receiving channel of the second radio frequency module;

the detection module is used for receiving the preset reference signal and the analog interference signal through the third radio frequency module and detecting a first signal-to-noise ratio in a receiving channel of the third radio frequency module;

a second control module, configured to detect, by the third radio frequency module, a second signal-to-noise ratio in a receiving path of the third radio frequency module when the first radio frequency module transmits the preset reference signal and the second radio frequency module stops transmitting the analog interference signal;

and the judging module is used for determining whether to take protective measures on the electronic device of the receiving channel of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio.

In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or an instruction stored on the memory and executable on the processor, and when the program or the instruction is executed by the processor, the steps of the electronic device protection method according to the first aspect are implemented.

In a fourth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the electronic device protection method according to the first aspect.

In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the electronic device protection method according to the first aspect.

In the embodiment of the application, a first radio frequency module is controlled to transmit a preset reference signal, and a second radio frequency module is controlled to transmit an analog interference signal, wherein the power of the analog interference signal is determined according to the power threshold of an electronic device of a receiving channel of the second radio frequency module; receiving a preset reference signal and an analog interference signal through a third radio frequency module, and detecting a first signal-to-noise ratio in a receiving channel of the third radio frequency module; detecting a second signal-to-noise ratio in a receiving channel of a third radio frequency module through the third radio frequency module under the condition that the first radio frequency module transmits a preset reference signal and the second radio frequency module stops transmitting the analog interference signal; and determining whether to take protective measures on the electronic device of the receiving channel of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio. . According to the embodiment of the application, before the second radio frequency module receives signals, a first signal to noise ratio is obtained through detection of the third radio frequency module in a simulation environment and a second signal to noise ratio is obtained through detection of the third radio frequency module in the current environment, and the comparison result of the first signal to noise ratio and the second signal to noise ratio is determined, so that whether protective measures need to be taken on electronic devices in a receiving channel of the second radio frequency module or not is predetermined, and the electronic devices arranged on the receiving channel of the second radio frequency module are prevented from being damaged by high-power interference signals.

Drawings

Fig. 1 is a first schematic flow chart of an electronic device protection method provided in an embodiment of the present application;

FIG. 2 is a hardware framework diagram for implementing a method for protecting an electronic device according to an embodiment of the present disclosure;

fig. 3 is a second schematic flow chart of an electronic device protection method provided in an embodiment of the present application;

fig. 4 is a schematic block diagram of an electronic device protection apparatus provided in an embodiment of the present application;

fig. 5 is a schematic block diagram of an electronic device provided in an embodiment of the present application;

fig. 6 is a schematic diagram of a hardware structure 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 described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. 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.

The electronic device protection method and the electronic device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Fig. 1 is a schematic flowchart of a first electronic device protection method according to an embodiment of the present disclosure. Fig. 2 is a hardware framework diagram for implementing a method for protecting an electronic device according to an embodiment of the present application.

The method of protecting the electronic device shown in fig. 1 will be described with reference to fig. 2.

The first rf module 201 may include a transmit path 2012 of the first rf module and a first signal antenna 2011. Illustratively, as shown in fig. 2, the rf integrated circuit chip, the transmission path 2012 of the first rf module, and the first signal antenna 2011 are connected in series in sequence to form the first rf module 201.

The radio frequency integrated circuit chip can be replaced by other circuit chips with signal transmission function, which are not listed. The transmission path 2012 of the first rf module may include a PA (Power Amplifier).

Illustratively, the operating frequency band of the first rf module 201 may be represented by x1-x 2. The first rf module 201 may transmit a first signal through the first signal antenna 2011, and the frequency of the first signal may be any frequency point within the operating frequency band x1-x2 of the first rf module 201.

The third rf module 203 may include a receive path and a third signal antenna of the third rf module. Illustratively, as shown in fig. 2, the rf integrated circuit chip, the receiving path of the third rf module, and the third signal antenna 2031 are sequentially connected in series to form the third rf module 203.

The radio frequency integrated circuit chip can be replaced by other circuit chips with signal transmission function, which are not listed. The receive path of the third rf module may include an LNA (low noise amplifier) 2033 and a band pass filter 2032. the LNA2033 may be an amplifier having a noise level lower than a predetermined level threshold and may be easily damaged when receiving a high power signal input.

Illustratively, the operating frequency band of the third rf module 203 may be represented by x3-x 4. The third rf module 203 may receive a third signal through the third signal antenna 2031, where the frequency of the third signal may be any frequency point located in the operating frequency band x3-x4 of the third rf module 203.

The second rf module 202 includes a second signal antenna 2021, a transmission path 2022 of the second rf module, a reception path 2023 of the second rf module, a signal reception protection branch 2024, and a control switch 2025. Exemplarily, as shown in fig. 2, the second signal antenna 2021 is connected to the first end of the control switch 2025, and the second end of the control switch 2025 is connected to one of the transmitting path 2022 of the second rf module, the receiving path 2023 of the second rf module, and the signal receiving protection branch 2024; the transmitting path 2022 of the second rf module, the receiving path 2023 of the second rf module, and the signal receiving protection branch 2024 are respectively connected to the wireless connection network ic chip.

The wireless connection network integrated circuit chip can also be replaced by other circuit chips which are not listed and have both the signal transmitting function and the signal receiving function. The transmit path 2022 of the second rf module may include a PA. The receive path 2023 of the second rf module may include an LNA. The control switch 2025 may be a single pole, triple throw switch or other type of switch.

Illustratively, the operating frequency band of the second RF module 202 may be represented by x5-x 6. The second rf module 203 may transmit or receive a second signal through the second signal antenna 2021, where the frequency of the second signal may be any frequency point within the operating frequency band x5-x6 of the second rf module 203.

The working frequency bands of the first radio frequency module 201, the second radio frequency module 202, and the third radio frequency module 203 may be three working frequency bands with similar frequencies, so that the difference between the frequencies of any two of the first signal, the second signal, and the third signal may be within a preset value range.

Taking the first rf module 201 and the third rf module 203 as an example, the relationship between the working frequency bands of the first rf module 201 and the third rf module 203 with similar frequencies will be described.

For example, the operating frequency band x1-x2 of the first rf module 201 and the operating frequency band x3-x4 of the third rf module 203 satisfy one of the following numerical relationships:

(a1)x1<x2<x3<x4；

(a2)x1<x3<x2<x4；

(a3)x3<x1<x4<x2；

(a4)x3<x4<x1<x2。

the frequency of the first signal is within the operating band x1-x2, and the frequency of the third signal is within the operating band x3-x4, so that the difference between the frequency of the first signal and the frequency of the third signal can be within a predetermined range [ -a1, a1], where a is a predetermined real number.

The relationship between the working frequency band of the first rf module 201 and the working frequency band of the second rf module 202, and the relationship between the working frequency band of the second rf module 202 and the working frequency band of the third rf module are similar to the relationship between the working frequency band of the first rf module 201 and the working frequency band of the third rf module 203, and reference may be made to the corresponding description parts in the foregoing, and details are not repeated here.

As shown in fig. 2, the first signal antenna 2011 of the first rf module 201 may transmit a predetermined reference signal to the third signal antenna 2031 of the third rf module 202, where the frequency of the predetermined reference signal may be within an operating band x1-x2 of the first rf module 201.

The second signal antenna 2021 of the second video module 202 may transmit an analog interference signal to the third signal antenna 2031 of the third rf module 202, and the frequency of the analog interference signal may be in the operating band x5-x6 of the second rf module 202.

In addition, interfering device 204 may transmit a strong interfering signal to third signal antenna 2031.

The electronic device protection method provided by the embodiment shown in fig. 1 is applied to an electronic device including a radio frequency assembly, where the radio frequency assembly includes a first radio frequency module 201, a second radio frequency module 202, and a third radio frequency module 203; the electronic device protection method includes steps S102 to S108.

The electronic device may include a radio frequency component and a processor.

Step S102, the first rf module 201 is controlled to transmit a preset reference signal, and the second rf module 202 is controlled to transmit an analog interference signal, wherein the power of the analog interference signal is determined according to the power threshold of the electronic device of the receiving path 2023 of the second rf module.

The processor may be connected to the first radio frequency module 201, and may be configured to send a first transmission instruction to the first radio frequency module 201, where the first transmission instruction is used to control the first radio frequency module 201 to transmit a preset reference signal.

The processor, which may be connected to the second rf module 202, may be configured to send a second transmission instruction to the second rf module 202, where the second transmission instruction is used to control the second rf module 202 to transmit the analog interference signal.

The processor, which may be connected to the third rf module 203, may be configured to receive the rf signal received by the third rf module 203.

The first rf module 201 is used for simulating and transmitting a useful signal received by the second rf module 202 during actual use. The second rf module 202 may be an rf module that has a requirement for protecting electronic devices when receiving rf signals, and may be configured to simulate and transmit high-power interference signals received by the second rf module 202 in an actual use process.

The first rf module 201 and the third rf module 203 may be predetermined according to the working frequency band of the second rf module 202, so that a difference between frequencies of any two of a first signal transmitted by the first rf module 201, a second signal transmitted by the second rf module 202, and a third signal received by the third rf module 203 is within a preset value range.

There may be an overlapping portion between the operating frequency bands of the first rf module 201 and the third rf module 203, so as to set the frequency of the preset reference signal within the operating frequency band of the third rf module 203, so that the preset reference signal can be determined as the useful signal received by the third rf module 203. The operating frequency bands of the second rf module 202 and the third rf module 203 may or may not have an overlapping portion, so that the frequency of the analog interference signal is set outside the operating frequency band of the third rf module 203, and the analog interference signal can be determined as the interference signal received by the third rf module 203.

For example:

(b1) the first radio frequency module 201 may be a radio frequency module of an LTE B7 signal.

The working frequency band of the LTE B7 signal is: 2500 + 2570 MHz.

The first rf module 201 may also be an LTE B38 signal rf module, or another rf module determined by the operating frequency band of the second rf module 202.

(b2) The second rf module 202 may be a 2.4G wifi signal rf module.

The working frequency band of the 2.4G wifi signal is: 2402 and 2482 MHz.

The second rf module 202 may also be other rf modules that require electronic device protection.

(b3) The third rf module 203 may be an N41 signal rf module.

The working frequency band of the N41 signal is: 2496 and 2690 MHz.

The third rf module 203 may also be another rf module determined by the operating frequency band of the second rf module 202.

In the following description, a specific embodiment will be described by taking as an example that the first rf module 201 may be an LTE B7 rf module, the second rf module 202 may be a 2.4G wifi rf module, and the third rf module may be an N41 rf module. The technical concept of the embodiment of the radio frequency module in which the first radio frequency module 201, the second radio frequency module 202, and the third radio frequency module 203 adopt other signals is the same as that of the present embodiment, and reference may be made to the corresponding description in the present embodiment, and details are not described below.

Under the condition that a strong high-power signal located in the working frequency band of the 2.4G wifi signal exists in the external environment, a receiving path of the N41 signal is saturated, and correspondingly, signal-to-noise ratio information is obviously deteriorated, so that whether the high-power signal located in the working frequency band of the 2.4G wifi signal exists in the external environment or not can be indirectly detected by detecting the receiving path of the N41 signal.

The preset reference signal transmitted by the radio frequency module of the LTE B7 signal may be a CW (Continuous Wave) signal with a first power and a frequency point of 2501MHz, where the 2501MHz is located in an operating frequency band of the N41 signal. The first power may be a fixed value set in advance.

On one hand, since the working frequency band of the LTE B7 signal partially overlaps with the working frequency band of the N41 signal, and the CW signal is located in the overlapped partial frequency band, the receiving path of the N41 signal can normally receive and mediate the CW signal.

On the other hand, the signal strength of the CW signal is the preset first power, which can ensure that the receiving path of the N41 signal can receive and mediate the CW signal normally.

The processor controls the second rf module 202 to transmit the analog interference signal. Wherein the power of the analog interference signal may be determined according to an electronic device power threshold of the receiving path 2023 of the second rf module.

As shown in fig. 2, the receive path 2023 of the second rf module may include an LNA, and the electronic device power threshold of the receive path 2023 of the second rf module may be the maximum power of the LNA. The maximum power of the LNA is summed with the antenna isolation, and the power of the analog interference signal can be calculated.

A signal with a transmit power greater than the maximum power can be considered a high power signal.

If a high-power signal with a transmitting power greater than the maximum bearing power passes through the LNA, the LNA is damaged by the high-power signal; when a signal with the transmission power less than or equal to the maximum bearing power passes through the LNA, the LNA can not be damaged.

The maximum power of the LNA can be obtained in advance through testing and is a fixed value. The antenna isolation can be measured in advance and is a fixed value.

It should be noted that, since the operating frequency bands of the N41 signal and the 2.4G wifi signal are not completely the same, when the N41 signal receives the analog interference signal transmitted by the radio frequency module of the 2.4G wifi signal, the analog interference signal is suppressed to a certain extent. The specific inhibition principle is as follows:

the working frequency band of the 2.4G wifi signal is: 2402 + 2482MHz, the working frequency band of the N41 signal is: 2496 and 2690 MHz. Illustratively, the radio frequency module of the 2.4G wifi signal sends the analog interference signal of the 2480MHz frequency point to the radio frequency module of the N41 signal. The receiving path of the radio frequency module of the N41 signal is provided with a band-pass filter which can filter signals outside 2496-2690 MHz. In practical applications, for example, if the difference between the frequency of the analog interference signal and the minimum value 2496 of the operating frequency band of the N41 signal is large, the band-pass filter may filter out 90% of the signal; if the difference between the frequency of the analog jammer signal and the minimum 2496 of the operating band of the N41 signal is small, the band pass filter may filter out 50% of the signal.

Therefore, the analog interference signal does not damage the LNA of the receiving path of the N41 signal, and the maximum power of the LNA of the receiving path of the N41 signal is larger than the maximum power of the LNA of the receiving path of the 2.4G WIFI signal in the face of the analog interference signal.

Step S104, receiving the preset reference signal and the analog interference signal through the third rf module 203, and detecting a first signal-to-noise ratio in a receiving path of the third rf module.

The frequency of the preset reference signal may be within the working frequency band of the third rf module 203, and the preset reference signal may be determined as a useful signal when the preset reference signal is received by the third rf module 203; the frequency of the analog interference signal may be outside the operating frequency band of the third rf module 203, and the analog interference signal may be determined as noise when the analog interference signal is received by the third rf module 203.

The first SIGNAL-to-NOISE RATIO may be a SIGNAL-to-NOISE RATIO (SNR) calculated based on a predetermined reference SIGNAL as a useful SIGNAL and an analog interference SIGNAL as NOISE.

SNR refers to the ratio of useful signal to noise in an electronic device or system. A higher signal-to-noise ratio of the electronic device indicates less noise and a lower signal-to-noise ratio indicates more noise. The SNR may be determined by the ratio of the desired signal to the noise.

Optionally, the frequency of the preset reference signal is located in the working frequency band of the third radio frequency module; the frequency of the analog interference signal is positioned outside the working frequency band of the third radio frequency module; the receiving path of the third rf module includes a bandpass filter 2032 of a corresponding operating frequency band; detecting a first signal-to-noise ratio in a receive path of a third radio frequency module, comprising: in the absence of the interference device 204, the preset reference signal and the analog interference signal are filtered by the band-pass filter 2032 to obtain a filtered preset reference signal and a filtered analog interference signal; and determining a first signal-to-noise ratio according to the ratio of the filtered preset reference signal to the filtered analog interference signal.

The frequency of the predetermined reference signal is located in the working frequency band of the third rf module, for example, the CW signal with a frequency point of 2501MHz and with the first power transmitted by the rf module of the LTE B38 signal is located in the working frequency band of 2496-2690MHz of the N41 signal. The frequency of the analog interference signal is located outside the operating frequency band of the third rf module, for example, the 2.4G wifi signal of the 2480MHz frequency point transmitted by the rf module of the 2.4G wifi signal is located outside the operating frequency band 2496-2690MHz of the N41 signal.

The method includes that no interfering device exists, in a theoretical environment, a distance between any interfering device and the electronic device is larger than a preset interference distance threshold, or an influence of an interfering signal emitted by the interfering device on the electronic device is negligibly small.

For example, in a theoretical environment, if there is no other interfering device 204 near the electronic device, the third rf module only receives the preset reference signal and the analog interfering signal, and only the preset reference signal as the useful signal and the analog interfering signal as the noise are considered in calculating the first signal-to-noise ratio. Other situations where no interfering device is present are similar to the theoretical environment and will not be described here.

The preset reference signal and the analog interference signal are filtered by the band pass filter 2032 to obtain a filtered preset reference signal and a filtered analog interference signal. The preset reference signal is located in the working frequency band of the third radio frequency module, the band-pass filter can release the preset reference signal, and the preset reference signal before filtering and the preset reference signal after filtering can be regarded as the same signal. The analog interference signal is located outside the operating frequency band of the third rf module, and a difference between the analog interference signal and the maximum value or the minimum value of the operating frequency band of the third rf module is less than or equal to a preset difference threshold, so that the bandpass filter filters only a small amount of the analog interference signal, for example, the power of the filtered analog interference signal may be 90% of the power of the analog interference signal before filtering. And calculating to obtain a first signal-to-noise ratio according to the ratio of the filtered preset reference signal to the filtered analog interference signal.

Optionally, the frequency of the preset reference signal is located in the working frequency band of the third radio frequency module; the frequency of the analog interference signal is positioned outside the working frequency band of the third radio frequency module; the receiving path of the third rf module includes a bandpass filter 2032 of the corresponding operating frequency band; detecting a first signal-to-noise ratio in a receive path of a third radio frequency module, comprising: filtering the preset reference signal, the analog interference signal and the first interference signal by a band-pass filter 2032 to obtain a filtered preset reference signal, a filtered analog interference signal and a filtered first interference signal, respectively; the first interference signal is a signal which is received by the third radio frequency module and is except for a preset reference signal and the analog interference signal; and determining a first signal-to-noise ratio according to the filtered preset reference signal, the filtered analog interference signal and the filtered first interference signal.

The frequency of the first interfering signal may be outside the operating frequency band of the third radio frequency module. The first interference signal is a signal received by the third radio frequency module except for a preset reference signal and the analog interference signal. In practical applications, there may be likely to be one or more interfering devices 204 in the vicinity of the electronic device that may emit strong interfering signals. The strong interference signals emitted by each of the interference devices 204 together form a first interference signal, and the first interference signal and the analog interference signal together form noise in the receiving path of the third rf module.

The preset reference signal, the analog interference signal, and the first interference signal are filtered by the band-pass filter 2032, and the filtered preset reference signal, the filtered analog interference signal, and the filtered first interference signal are obtained. The preset reference signal is located in the working frequency band of the third radio frequency module, the band-pass filter can release the preset reference signal, and the preset reference signal before filtering and the preset reference signal after filtering can be regarded as the same signal. The analog interference signal is located outside the operating frequency band of the third rf module, and a difference between the analog interference signal and the maximum value or the minimum value of the operating frequency band of the third rf module is less than or equal to a preset difference threshold, so that the bandpass filter filters only a small amount of the analog interference signal, for example, the power of the filtered analog interference signal may be 90% of the power of the analog interference signal before filtering. The first interference signal is located outside the operating frequency band of the third rf module, so that the bandpass filter can filter out a part of the first interference signal, for example, the power of the filtered first interference signal may be 50% of the power of the first interference signal before filtering. And summing the filtered analog interference signal and the filtered first interference signal, and calculating to obtain a first signal-to-noise ratio according to the ratio of the filtered preset reference signal to the summation result.

After the first signal-to-noise ratio is calculated, it can be stored for comparison in a subsequent step.

And step S106, under the condition that the first radio frequency module transmits the preset reference signal and the second radio frequency module stops transmitting the analog interference signal, detecting a second signal-to-noise ratio in a receiving channel of the third radio frequency module through the third radio frequency module.

The processor may control the first rf module 201 to continue transmitting the predetermined reference signal, and the processor may control the second rf module 202 to stop transmitting the analog interference signal.

In the case where the second rf module 202 stops transmitting the analog interference signal, there are three possibilities:

(c1) compared with the step S104, no unknown new interference signal appears in the current environment;

(c2) a new interference signal with less power and less possibility of damaging the electronic device occurs in the current environment than when step S104 is performed;

(c3) a new interference signal of a larger power, which may damage the electronic device, occurs in the current environment than when step S104 is performed.

If an unknown new interference signal is received in a receiving path of the third radio frequency module, the new interference signal can be determined as noise, a preset reference signal is determined as a useful signal to calculate an SNR, and the calculated SNR is determined as a second signal-to-noise ratio.

If the new interference signal is not received in the receiving path of the third rf module, the noise may be considered to be approximately zero, the preset reference signal is determined to be a useful signal to calculate the SNR, and the calculated SNR is determined to be a second signal-to-noise ratio.

Optionally, detecting, by the third rf module, a second signal-to-noise ratio in a receive path of the third rf module includes: filtering the preset reference signal and the second interference signal through a band-pass filter in the third radio frequency module to obtain a filtered preset reference signal and a filtered second interference signal; the second interference signal is a signal which is received by the third radio frequency module and is except the target reference signal; and determining a second signal-to-noise ratio according to the ratio of the filtered preset reference signal to the filtered second interference signal.

The second interference signal may be a sum of the first interference signal and the unknown new interference signal, or may be the new interference signal.

When the surrounding environment of the electronic device is stable, if the first interference signal exists, the first interference signal may be regarded as being kept unchanged. That is, when the first signal-to-noise ratio and the second signal-to-noise ratio are calculated, the first interference signal exists around the electronic device, and in this case, the first interference signal does not interfere with the determination result of whether the electronic device needs to be protected.

If the first signal-to-noise ratio and the second signal-to-noise ratio are calculated, the first interference signal does not exist, and the interference signals received by the third radio frequency module are new interference signals.

The preset reference signal and the second interference signal are filtered by the band-pass filter 2032, and the filtered preset reference signal and the filtered second interference signal are obtained. The preset reference signal is located in the working frequency band of the third radio frequency module, the band-pass filter can release the preset reference signal, and the preset reference signal before filtering and the preset reference signal after filtering can be regarded as the same signal. The second interference signal is located outside the operating frequency band of the third rf module, so that the bandpass filter can filter out a part of the second interference signal, for example, the power of the filtered second interference signal may be 70% of the power of the first interference signal before filtering. And calculating to obtain a second signal-to-noise ratio according to the ratio of the filtered preset reference signal to the filtered second interference signal.

Optionally, the receiving, by the third rf module, the preset reference signal and the analog interference signal, and detecting the first signal-to-noise ratio in the receiving path of the third rf module includes: in the starting process of the electronic equipment, a preset reference signal and an analog interference signal are received through a third radio frequency module, and a first signal-to-noise ratio in a receiving channel of the third radio frequency module is detected; detecting, by the third rf module, a second signal-to-noise ratio in a receive path of the third rf module, comprising: and detecting a second signal-to-noise ratio in a receiving channel of the third radio frequency module through the third radio frequency module in the starting process of the wireless function of the electronic equipment.

The electronic device may be a mobile phone or other electronic devices having an antenna device. The wireless function is the WIFI function, can adopt the radio frequency module of 2.4G WIFI signal, also can adopt the radio frequency module of 5G WIFI signal, can also adopt other wireless signal radio frequency modules.

The time for detecting the first signal-to-noise ratio can be set in the process of starting the electronic equipment, so that the interference of the calculation result of the first signal-to-noise ratio by other signal transmission flows of the electronic equipment, which are irrelevant to the technical scheme, can be avoided.

In the case that the second radio frequency module is a 2.4G WIFI signal, the timing of detecting the second signal-to-noise ratio may be set in the wireless function starting process of the electronic device, so as to determine in advance whether a protective measure needs to be taken on the electronic device before the wireless function is started. In the wireless function starting process, 2.4G WIFI can be turned off by default, whether 2.4G WIFI is turned on or not is determined after the environment to be detected is safe, and therefore the damage of LNA generation devices on the receiving channel of 2.4G WIFI is avoided.

Step S108, determining whether to take protective measures for the electronic device of the receiving path 2023 of the second rf module according to the comparison result between the first signal-to-noise ratio and the second signal-to-noise ratio.

If the first signal-to-noise ratio is smaller than the second signal-to-noise ratio, it is indicated that the noise in the second signal-to-noise ratio is smaller than the noise in the first signal-to-noise ratio, and the current environmental safety can be determined without taking protective measures on the electronic device of the receiving path 2023 of the second radio frequency module; if the first signal-to-noise ratio is greater than or equal to the second signal-to-noise ratio, it is determined that the current environment is unsafe and protective measures need to be taken for the electronic device of the receiving path 2023 of the second rf module.

Optionally, the second rf module 202 includes a second signal antenna 2021, a transmitting path 2022 of the second rf module, a receiving path 2023 of the second rf module, a signal receiving protection branch 2024, and a control switch 2025; a first end of the control switch 2025 is connected to the second signal antenna 2021, and a second end of the control switch 2025 is connected to one of the transmission path 2022 of the second rf module, the reception path 2023 of the second rf module, and the signal reception protection branch 2024; after determining whether to take protective measures on the electronic device of the receiving path 2023 of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, the method further includes: if it is determined that a protective measure is taken for the electronic device of the receiving path 2023 of the second rf module, a switch control instruction is sent to the second rf module 202, so that the signal receiving protection branch 2024 in the second rf module 202 is connected and conducted with the second end of the control switch 2025, and the second rf module 202 receives the target signal through the signal receiving protection branch 2024.

Compared with the receiving path 2023 of the second rf module, the signal receiving protection branch 2024, i.e. the bypass path, can bear stronger interference signals, i.e. high power signals that may damage the electronic devices in the receiving path 2023 of the second rf module, and generally cannot damage the electronic devices in the signal receiving protection branch 2024. When it is determined that a protective measure needs to be taken on the electronic device of the receiving path 2023 of the second rf module, a switch control instruction may be sent to the second rf module 202, so that the signal receiving protection branch 2024 in the second rf module 202 is connected to the second end of the control switch 2025, the receiving path 2023 of the second rf module is disconnected from the second end of the control switch 2025, and the second rf module 202 receives the target signal through the signal receiving protection branch 2024.

The target signal may be a useful signal that a user desires to receive through the second rf module 202.

Optionally, the radio frequency assembly further includes a fourth radio frequency module having the same function as the second radio frequency module; the difference between the power threshold of the electronic device of the receiving channel of the fourth radio frequency module and the power threshold of the electronic device of the receiving channel of the second radio frequency module is greater than or equal to a preset difference threshold; after determining whether to take protective measures on the electronic device of the receiving channel of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, the method further comprises the following steps: if the electronic device of the receiving channel of the second radio frequency module is determined to take protective measures, a working instruction is sent to the fourth radio frequency module; the working instruction is used for controlling the fourth radio frequency module to receive the target signal; after the preset time threshold value, judging whether the fourth radio frequency module works normally; if not, a switch control instruction is sent to the second radio frequency module, so that the signal receiving protection branch in the second radio frequency module is connected and conducted with the second end of the control switch, and the second radio frequency module receives signals through the signal receiving protection branch.

The radio frequency assembly further comprises a fourth radio frequency module having the same function as the second radio frequency module. Illustratively, the second radio frequency module may be a radio frequency module for 2.4G WIFI signals, and the fourth radio frequency module may be a radio frequency module for 5G WIFI signals, both of which may be used to perform radio frequency signal transmission required when the wireless network operates.

The electronic device power threshold of the receive path of the fourth rf module may be a maximum power sustained by the electronic device in the receive path of the fourth rf module. The electronic device power threshold of the receive path of the second radio frequency module may be a maximum power sustained by the electronic device in the receive path of the second radio frequency module. The maximum bearing power corresponding to the fourth radio frequency module is greater than the maximum bearing power corresponding to the second radio frequency module, and the difference between the maximum bearing power and the maximum bearing power is greater than or equal to a preset difference threshold.

If it is determined that a protective measure is taken for the electronic device of the receiving path of the second rf module, scan connection may be preferentially performed for the fourth rf module, and if connection is possible, the fourth rf module is used to receive the target signal, and the disconnection between the receiving path 2023 of the second rf module in the second rf module 202 and the control switch 2025 is maintained. If the connection cannot be determined after the preset time, it may be determined that the fourth rf module cannot be used to replace the second rf module, and the bypass path is selected to protect the electronic device of the receiving path 2023 of the second rf module.

The protective measures include using the fourth rf module, and in particular, the processor may issue a working instruction to the fourth rf module, and control the receiving path 2023 of the second rf module to be disconnected from the second end of the control switch 2025. The working instruction is used for controlling the fourth radio frequency module to receive the target signal; and after the preset time threshold value, judging whether the fourth radio frequency module works normally, if so, determining that the fourth radio frequency module can replace the second radio frequency module to receive the target signal, and continuing to normally use the fourth radio frequency module. If not, the protective measures of the electronic device are replaced.

The protection measures further include using a bypass path, specifically, the processor may send a switch control instruction to the second rf module 202, so that the signal receiving protection branch 2024 in the second rf module 202 is connected to and conducted with the second end of the control switch 2025, the receiving path 2023 of the second rf module is disconnected from the second end of the control switch 2025, and the second rf module 202 receives the target signal through the signal receiving protection branch 2024.

For example, within a preset time threshold W seconds, if 5G WIFI can be normally connected and used, it indicates that there is normally usable 5G WIFI in the current environment, and then 2.4G WIFI does not need to be turned on again;

at present most router all supports 2.4G WIFI and 5G WIFI, consequently even closed 2.4G WIFI, mobile terminal also can normally connect and use 5G WIFI under most circumstances, and 5G WIFI's rate is faster, can not exert an influence to user experience.

If the wireless sensor can not be normally connected with 5G WIFI within W seconds for use, a signal receiving protection circuit of 2.4G WIFI is used. Within W seconds, if the 5G WIFI can not be normally connected and used, it is indicated that no normally usable 5G WIFI exists in the current environment, and in order not to influence normal use of WIFI by a user, the bypass channel of the 2.4G WIFI signal is scanned and connected. The bypass path can bear stronger interference signals, so that the risk of 2.4G wifi failure can be reduced by switching to the bypass path.

In the embodiment shown in fig. 1, a first rf module is controlled to transmit a preset reference signal, and a second rf module is controlled to transmit an analog interference signal, where the power of the analog interference signal is determined according to an electronic device power threshold of a receiving channel of the second rf module; receiving a preset reference signal and an analog interference signal through a third radio frequency module, and detecting a first signal-to-noise ratio in a receiving channel of the third radio frequency module; detecting a second signal-to-noise ratio in a receiving channel of a third radio frequency module through the third radio frequency module under the condition that the first radio frequency module transmits a preset reference signal and the second radio frequency module stops transmitting the analog interference signal; and determining whether to take protective measures on the electronic device of the receiving channel of the second radio frequency module or not according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio. . According to the embodiment of the application, before the second radio frequency module receives signals, a first signal to noise ratio is obtained through detection of the third radio frequency module in a simulation environment and a second signal to noise ratio is obtained through detection of the third radio frequency module in the current environment, and the comparison result of the first signal to noise ratio and the second signal to noise ratio is determined, so that whether protective measures need to be taken on electronic devices in a receiving channel of the second radio frequency module or not is predetermined, and the electronic devices arranged on the receiving channel of the second radio frequency module are prevented from being damaged by high-power interference signals.

Fig. 3 is a second schematic flow chart of an electronic device protection method according to an embodiment of the present application.

Step 302, the mobile phone is turned on.

Step 304, in the boot process: the LTE B7 TX transmits a CW wave signal with certain intensity, the 2.4G wifi TX transmits a signal with a specific size, and the N41 receives signal-to-noise ratio information A of a path opening detection at the moment and stores the signal-to-noise ratio information A to be called.

LTE B7 TX (Transmit) refers to the Transmit channel of LTE B7 signals. 2.4G wifi TX refers to the transmit channel of a 2.4G wifi signal.

Step 306, the wireless network function is turned on.

The wifi function of the mobile phone is started, and the default 2.4G wifi is in a closed state.

Step 308, the LTE B7 TX path transmits CW wave signals with the same strength, and the N41 reception path detects the snr information B at this time.

In step 310, it is determined whether A is greater than or equal to B.

If yes, go to step 312; if not, go to step 314.

And step 312, determining that the current environment is unsafe, and if the low noise amplifier of the 2.4G RX path has damage risk, closing the 2.4G wifi by default, and only using 5G wifi to scan connection.

And step 314, determining the safety of the current environment, and normally starting the 2.4G wifi for use.

And step 316, judging whether the 5G wifi can be normally connected and used within the W second.

If yes, go to step 318; if not, go to step 320.

Step 318, keeping the current state unchanged.

And step 320, controlling the signal receiving protection branch of the 2.4G wifi to be conducted with the 2.4G wifi antenna.

For the embodiment of the electronic device protection method, since it is basically similar to the embodiment of the electronic device protection method described above, the description is relatively simple, and for relevant points, reference may be made to the partial description of the embodiment of the electronic device protection method described above.

It should be noted that, in the electronic device protection method provided in the embodiment of the present application, the execution main body may be an electronic device protection apparatus, or a control module in the electronic device protection apparatus for executing the electronic device protection method. The embodiment of the present application describes an electronic device protection apparatus provided in the embodiment of the present application, by taking an example of a method for the electronic device protection apparatus to execute electronic device protection.

Fig. 4 is a schematic block diagram of an electronic device protection apparatus according to an embodiment of the present application.

As shown in fig. 4, the electronic device protection apparatus is applied to an electronic device including a radio frequency assembly including a first radio frequency module, a second radio frequency module, and a third radio frequency module; the electronic device protection apparatus includes:

a control module 401, configured to control the first radio frequency module to transmit a preset reference signal and control the second radio frequency module to transmit an analog interference signal, where a power of the analog interference signal is determined according to a power threshold of an electronic device of a receiving path of the second radio frequency module;

a first detecting module 402, configured to receive the preset reference signal and the analog interference signal through the third rf module, and detect a first signal-to-noise ratio in a receiving path of the third rf module;

a second detecting module 403, configured to detect, by the third radio frequency module, a second signal-to-noise ratio in a receiving path of the third radio frequency module under the condition that the first radio frequency module transmits the preset reference signal and the second radio frequency module stops transmitting the analog interference signal;

a determining module 404, configured to determine whether to take a protective measure for an electronic device of a receiving path of the second radio frequency module according to a comparison result between the first signal-to-noise ratio and the second signal-to-noise ratio.

Optionally, the detecting module 402 is specifically configured to:

in the starting process of the electronic equipment, receiving the preset reference signal and the analog interference signal through the third radio frequency module, and detecting a first signal-to-noise ratio in a receiving channel of the third radio frequency module;

the detecting, by the third rf module, a second signal-to-noise ratio in a receive path of the third rf module includes:

and detecting a second signal-to-noise ratio in a receiving channel of the third radio frequency module through the third radio frequency module in the starting process of the wireless function of the electronic equipment.

Optionally, the second radio frequency module includes a second signal antenna, a signal transmitting path, a receiving path of the second radio frequency module, a signal receiving protection branch, and a control switch; a first end of the control switch is connected with the second signal antenna, and a second end of the control switch is connected with one of the signal transmitting path, the receiving path of the second radio frequency module and the signal receiving protection branch; after determining whether to take protective measures on the electronic device of the receiving path of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, the method further includes:

if the fact that protective measures are taken on the electronic device of the receiving channel of the second radio frequency module is determined, a switch control instruction is sent to the second radio frequency module, the signal receiving protection branch in the second radio frequency module is connected and conducted with the second end of the control switch, and the second radio frequency module receives a target signal through the signal receiving protection branch.

Optionally, the radio frequency assembly further includes a fourth radio frequency module having the same function as the second radio frequency module; the difference between the power threshold of the electronic device of the receiving channel of the fourth radio frequency module and the power threshold of the electronic device of the receiving channel of the second radio frequency module is greater than or equal to a preset difference threshold; after determining whether to take protective measures on the electronic device of the receiving path of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, the method further includes:

if the electronic device of the receiving channel of the second radio frequency module is determined to take protective measures, a working instruction is sent to the fourth radio frequency module; the working instruction is used for controlling the fourth radio frequency module to receive the target signal;

after a preset time threshold value, judging whether the fourth radio frequency module works normally;

if not, a switch control instruction is sent to the second radio frequency module, so that the signal receiving protection branch in the second radio frequency module is connected and conducted with the second end of the control switch, and the second radio frequency module receives signals through the signal receiving protection branch.

Optionally, the frequency of the preset reference signal is located in an operating frequency band of the third radio frequency module; the frequency of the analog interference signal is positioned outside the working frequency band of the third radio frequency module; the receiving path of the third radio frequency module comprises a band-pass filter of a corresponding working frequency band; the detecting a first signal-to-noise ratio in a receive path of the third rf module includes:

under the condition that no interference equipment exists, filtering the preset reference signal and the analog interference signal through the band-pass filter to obtain the filtered preset reference signal and the filtered analog interference signal;

and determining the first signal-to-noise ratio according to the ratio of the filtered preset reference signal to the filtered analog interference signal.

filtering the preset reference signal, the analog interference signal and the first interference signal through the band-pass filter to respectively obtain the filtered preset reference signal, the filtered analog interference signal and the filtered first interference signal; the first interference signal is a signal received by the third radio frequency module except the preset reference signal and the analog interference signal;

and determining the first signal-to-noise ratio according to the filtered preset reference signal, the filtered analog interference signal and the filtered first interference signal.

Optionally, the detecting, by the third rf module, a second signal-to-noise ratio in a receive path of the third rf module includes:

filtering the preset reference signal and the second interference signal through the band-pass filter in the third radio frequency module to obtain the filtered preset reference signal and the filtered second interference signal; the second interference signal is a signal received by the third radio frequency module except the target reference signal;

and determining the second signal-to-noise ratio according to the ratio of the filtered preset reference signal to the filtered second interference signal.

The electronic device protection device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a personal computer (personal computer, PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not limited in particular.

The electronic device protection apparatus in the embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The electronic device protection apparatus provided in the embodiment of the present application can implement each process implemented by the method embodiments of fig. 1 to fig. 3, and is not described here again to avoid repetition.

Fig. 5 is a schematic block diagram of an electronic device provided in an embodiment of the present application. Optionally, as shown in fig. 5, an electronic device 500 is further provided in this embodiment of the present application, and includes a processor 501, a memory 502, and a program or an instruction stored in the memory 502 and executable on the processor 501, where the program or the instruction is executed by the processor 501 to implement each process of the embodiment of the electronic device protection method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.

The electronic device 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and the like.

Those skilled in the art will appreciate that the electronic device 600 may further comprise a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 610 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The electronic device structure shown in fig. 6 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.

The rf unit 601 may include a first rf module, a second rf module, and a third rf module.

Wherein, the processor 610 is configured to:

controlling a first radio frequency module to transmit a preset reference signal, and controlling a second radio frequency module to transmit an analog interference signal, wherein the power of the analog interference signal is determined according to the power threshold of an electronic device of a receiving channel of the second radio frequency module;

a radio frequency unit 601, configured to:

transmitting a preset reference signal, and transmitting an analog interference signal;

a processor 610, further configured to:

receiving a preset reference signal and an analog interference signal through a third radio frequency module, and detecting a first signal-to-noise ratio in a receiving channel of the third radio frequency module;

the radio frequency unit 601 is further configured to:

receiving a preset reference signal and an analog interference signal, and detecting a first signal-to-noise ratio in a receiving channel of a third radio frequency module;

a processor 610, further configured to:

detecting a second signal-to-noise ratio in a receiving channel of a third radio frequency module through the third radio frequency module under the condition that the first radio frequency module transmits a preset reference signal and the second radio frequency module stops transmitting the analog interference signal;

the radio frequency unit 601 is further configured to:

detecting a second signal-to-noise ratio in a receiving path of the third radio frequency module under the condition of transmitting a preset reference signal and stopping transmitting the analog interference signal;

a processor 610, further configured to:

and determining whether to take protective measures on the electronic device of the receiving channel of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio.

Optionally, the processor 610 is further configured to:

receiving a preset reference signal and an analog interference signal through a third radio frequency module, and detecting a first signal-to-noise ratio in a receiving channel of the third radio frequency module, wherein the detecting comprises the following steps:

in the starting process of the electronic equipment, a preset reference signal and an analog interference signal are received through a third radio frequency module, and a first signal-to-noise ratio in a receiving channel of the third radio frequency module is detected;

detecting, by the third rf module, a second signal-to-noise ratio in a receive path of the third rf module, comprising:

Optionally, the second radio frequency module includes a second signal antenna, a signal transmitting path, a receiving path of the second radio frequency module, a signal receiving protection branch, and a control switch; the first end of the control switch is connected with the second signal antenna, and the second end of the control switch is connected with one of the signal transmitting path, the receiving path of the second radio frequency module and the signal receiving protection branch; a processor 610, further configured to:

and if the electronic device of the receiving channel of the second radio frequency module is determined to take protective measures, sending a switch control instruction to the second radio frequency module, so that a signal receiving protection branch in the second radio frequency module is connected and conducted with the second end of the control switch, and the second radio frequency module receives the target signal through the signal receiving protection branch. Transmit path transmit path

Optionally, the radio frequency assembly further includes a fourth radio frequency module having the same function as the second radio frequency module; the difference between the power threshold of the electronic device of the receiving channel of the fourth radio frequency module and the power threshold of the electronic device of the receiving channel of the second radio frequency module is greater than or equal to a preset difference threshold; a processor 610, further configured to:

after the preset time threshold value, judging whether the fourth radio frequency module works normally;

Optionally, the frequency of the preset reference signal is located in the working frequency band of the third radio frequency module; the frequency of the analog interference signal is positioned outside the working frequency band of the third radio frequency module; the receiving path of the third radio frequency module comprises a band-pass filter of a corresponding working frequency band; a processor 610, further configured to:

detecting a first signal-to-noise ratio in a receive path of a third radio frequency module, comprising:

under the condition that no interference equipment exists, filtering the preset reference signal and the analog interference signal through a band-pass filter to obtain a filtered preset reference signal and a filtered analog interference signal;

and determining a first signal-to-noise ratio according to the ratio of the filtered preset reference signal to the filtered analog interference signal.

filtering the preset reference signal, the analog interference signal and the first interference signal through a band-pass filter to respectively obtain the filtered preset reference signal, the filtered analog interference signal and the filtered first interference signal; the first interference signal is a signal which is received by the third radio frequency module and is except for a preset reference signal and the analog interference signal;

and determining a first signal-to-noise ratio according to the filtered preset reference signal, the filtered analog interference signal and the filtered first interference signal.

Optionally, the processor 610 is further configured to:

filtering the preset reference signal and the second interference signal through a band-pass filter in the third radio frequency module to obtain a filtered preset reference signal and a filtered second interference signal; the second interference signal is a signal which is received by the third radio frequency module and is except the target reference signal;

and determining a second signal-to-noise ratio according to the ratio of the filtered preset reference signal to the filtered second interference signal.

Through the embodiment of the application, the first signal to noise ratio can be determined when the electronic equipment is started every time, the second signal to noise ratio is determined when the wireless function is opened, and whether protective measures need to be taken or not is judged, so that whether interference signals possibly threatening an electronic device exist in the current environment or not can be judged before the wireless function is put into use, protective measures are taken in advance, damage to the electronic device is avoided, the first signal to noise ratio can be obtained under the two conditions that the interference equipment does not exist and the interference equipment exists, and the threat of the actual interference signals can be accurately reflected through the second signal to noise ratio.

It is to be understood that, in the embodiment of the present application, the input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics Processing Unit 6041 processes image data of a still picture or a video obtained by an image capturing apparatus (such as a camera) in a video capturing mode or an image capturing mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 607 includes a touch panel 6071 and other input devices 6072. A touch panel 6071, also referred to as a touch screen. The touch panel 6071 may include two parts of a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein. The memory 609 may be used to store software programs as well as various data including, but not limited to, application programs and an operating system. The processor 610 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the electronic device protection method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the embodiment of the electronic device protection method, and can achieve the same technical effect, and the details are not repeated here to avoid repetition.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An electronic device protection method is applied to electronic equipment comprising a radio frequency assembly, and is characterized in that the radio frequency assembly comprises a first radio frequency module, a second radio frequency module and a third radio frequency module; the method comprises the following steps:

2. The method of claim 1, wherein the receiving the pre-determined reference signal and the analog interference signal by the third RF module, and detecting the first signal-to-noise ratio in the receive path of the third RF module comprises:

3. The method of claim 1, wherein the second RF module comprises a second signal antenna, a transmit path of the second RF module, a receive path of the second RF module, a signal reception protection branch, and a control switch; a first end of the control switch is connected with the second signal antenna, and a second end of the control switch is connected with one of a transmitting path of the second radio frequency module, a receiving path of the second radio frequency module and the signal receiving protection branch; after determining whether to take protective measures on the electronic device of the receiving path of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, the method further includes:

if the electronic device of the receiving channel of the second radio frequency module is determined to take protective measures, a switch control instruction is sent to the second radio frequency module, so that the signal receiving protection branch in the second radio frequency module is connected and conducted with the second end of the control switch, and the second radio frequency module receives a target signal through the signal receiving protection branch.

4. The method of claim 3, wherein the radio frequency assembly further comprises a fourth radio frequency module having the same functionality as the second radio frequency module; the difference between the power threshold of the electronic device of the receiving channel of the fourth radio frequency module and the power threshold of the electronic device of the receiving channel of the second radio frequency module is greater than or equal to a preset difference threshold; after determining whether to take protective measures on the electronic device of the receiving path of the second radio frequency module according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, the method further includes:

5. The method of claim 1, wherein the frequency of the predetermined reference signal is located in an operating frequency band of the third RF module; the frequency of the analog interference signal is positioned outside the working frequency band of the third radio frequency module; the receiving path of the third radio frequency module comprises a band-pass filter of a corresponding working frequency band; the detecting a first signal-to-noise ratio in a receive path of the third rf module includes:

6. The method of claim 1, wherein the frequency of the predetermined reference signal is located in an operating frequency band of the third RF module; the frequency of the analog interference signal is positioned outside the working frequency band of the third radio frequency module; the receiving path of the third radio frequency module comprises a band-pass filter of a corresponding working frequency band; the detecting a first signal-to-noise ratio in a receive path of the third rf module includes:

7. The method of claim 5, wherein said detecting, by the third RF module, a second signal-to-noise ratio in a receive path of the third RF module comprises:

8. An electronic device protection device is applied to electronic equipment comprising a radio frequency assembly, and is characterized in that the radio frequency assembly comprises a first radio frequency module, a second radio frequency module and a third radio frequency module; the device comprises:

the control module is used for controlling the first radio frequency module to transmit a preset reference signal and controlling the second radio frequency module to transmit an analog interference signal, wherein the power of the analog interference signal is determined according to the power threshold of an electronic device of a receiving channel of the second radio frequency module;

the first detection module is used for receiving the preset reference signal and the analog interference signal through the third radio frequency module and detecting a first signal-to-noise ratio in a receiving path of the third radio frequency module;

a second detection module, configured to detect, by the third radio frequency module, a second signal-to-noise ratio in a reception path of the third radio frequency module when the first radio frequency module transmits the preset reference signal and the second radio frequency module stops transmitting the analog interference signal;

9. An electronic device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the electronic device protection method according to any one of claims 1 to 7.

10. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the electronic device protection method according to any one of claims 1 to 7.