CN114978211B

CN114978211B - Electronic device protection method and electronic equipment

Info

Publication number: CN114978211B
Application number: CN202210515746.0A
Authority: CN
Inventors: 徐国海
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Filing date: 2022-05-12
Publication date: 2024-06-07
Anticipated expiration: 2042-05-12

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: the method comprises the steps of controlling a first radio frequency module to emit a preset reference signal, and controlling a second radio frequency module to emit 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; under the condition that the first radio frequency module transmits a preset reference signal and the second radio frequency module stops transmitting an 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; and determining whether to take protective measures for 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.

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 increasingly emphasized. With the explosive growth of the number of electronic devices, the signal emitted by each electronic device inevitably causes interference with other electronic devices in the vicinity. The strength of a signal is typically reflected by the transmit power of the signal. High-power interfering signals may even damage electronics disposed in the signal receiving circuitry 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 larger than a preset power threshold value, so as to determine whether protection measures need to be taken, so that 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 protection measures.

Disclosure of Invention

The embodiment of the application aims to provide an electronic device protection method and electronic equipment, which can solve the problem of how to avoid damaging an electronic device arranged on a signal receiving circuit by a high-power interference signal.

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

The first radio frequency module is controlled to emit a preset reference signal, the second radio frequency module is controlled to emit an analog interference signal, and 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 channel of the third radio frequency module;

detecting a second signal-to-noise ratio in a receiving path of the third radio frequency module by 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;

and determining whether to take protective measures for 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.

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 emit a preset reference signal and controlling the second radio frequency module to emit 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;

The second control module is used for detecting a second signal-to-noise ratio in a receiving channel of the third radio frequency module through 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;

And the judging module is used for determining whether to take protective measures for 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.

In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions implementing the steps of the electronic device protection method according to the first aspect when executed by the processor.

In a fourth aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions 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 emit a preset reference signal, a second radio frequency module is controlled to emit 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; under the condition that the first radio frequency module transmits a preset reference signal and the second radio frequency module stops transmitting an 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; and determining whether to take protective measures for 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. . According to the embodiment of the application, before the second radio frequency module receives the signal, the first signal-to-noise ratio is detected by the third radio frequency module in the simulation environment and the second signal-to-noise ratio is detected by 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 the electronic device in the receiving channel of the second radio frequency module needs to be protected or not is determined in advance, and the electronic device arranged on the receiving channel of the second radio frequency module is prevented from being damaged by the high-power interference signal.

Drawings

Fig. 1 is a schematic flow chart of a first method for protecting an electronic device according to an embodiment of the present application;

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

Fig. 3 is a second flowchart of a method for protecting an electronic device according to an embodiment of the present application;

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

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

fig. 6 is a schematic hardware structure of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

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

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

The electronic device protection method shown in fig. 1 is described below 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 sequentially connected in series to form the first rf module 201.

The rf integrated circuit chip may be replaced by other circuit chips not shown with a signal transmitting function. The transmit path 2012 of the first rf module may include a PA (Power Amplifier).

Illustratively, the operating frequency band of the first radio frequency 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, where the frequency of the first signal may be any frequency point located in the operating frequency range x1-x2 of the first rf module 201.

The third radio frequency module 203 may include a third signal antenna and a receive path of the third radio frequency 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 rf integrated circuit chip may be replaced by other circuit chips not shown with a signal transmitting function. The receive path of the third rf module may include an LNA ((low noise amplifier, low noise amplifier) 2033 and a band pass filter 2032.LNA2033 may be an amplifier with a noise figure below a preset coefficient threshold that may be vulnerable to damage if a high power signal input is received.

The operating frequency band of the third rf module 203 may be represented by x3-x4, for example. 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 range x3-x4 of the third rf module 203.

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

The wireless connection network integrated circuit chip can 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 radio frequency 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 radio frequency 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 one of frequency points located in the operating frequency range x5-x6 of the second rf module 203.

The working frequency bands of the first rf module 201, the second rf module 202, and the third rf 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.

The relationship between the operating frequency band of the first rf module 201 and the operating frequency band of the third rf module 203, which are similar in frequency, will be described below by taking the first rf module 201 and the third rf module 203 as an example.

For example, the operating frequency bands x1-x2 of the first rf module 201 and the operating frequency bands 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 located in the working frequency range x1-x2, and the frequency of the third signal is located in the working frequency range x3-x4, so that the difference between the frequency of the first signal and the frequency of the third signal can be located in a preset value range [ -a1, a1], wherein a is a preset real number.

The relationship between the operating frequency band of the first rf module 201 and the operating frequency band of the second rf module 202, and the relationship between the operating frequency band of the second rf module 202 and the operating frequency band of the third rf module are similar to the aforementioned relationship between the operating frequency band of the first rf module 201 and the operating frequency band of the third rf module 203, and reference is made to the corresponding description section in the foregoing, and will not be repeated here.

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

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

Additionally, the interfering device 204 may transmit a strong interfering signal to the third signal antenna 2031.

The embodiment shown in fig. 1 provides a method for protecting an electronic device, which is applied to an electronic device including a radio frequency assembly, wherein 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.

In 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 for controlling 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 configured to simulate transmitting the 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 need for protecting electronic devices when receiving rf signals, and may be used to simulate transmitting high-power interference signals received by the second rf module 202 during actual use.

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

The operating frequency bands of the first rf module 201 and the third rf module 203 may have overlapping portions 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 may be determined as the useful signal received by the third rf module 203. The working frequency bands of the second radio frequency module 202 and the third radio frequency module 203 may or may not have an overlapping portion, so that the frequency of the analog interference signal is set outside the working frequency band of the third radio frequency module 203, so that the analog interference signal can be determined as the interference signal received by the third radio frequency 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 as follows: 2500-2570MHz.

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

(B2) The second rf module 202 may be a rf module of a 2.4G wifi signal.

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

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

(B3) The third rf module 203 may be an rf module of an N41 signal.

The working frequency band of the N41 signal is as follows: 2496-2690MHz.

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

In the following description, taking a radio frequency module of the LTE B7 signal as the first radio frequency module 201, a radio frequency module of the 2.4G wifi signal as the second radio frequency module 202, and a radio frequency module of the N41 signal as the third radio frequency module as an example, a specific embodiment is described, where the operations performed by the radio frequency modules are controlled. The technical conception of the embodiment of the rf modules of the first rf module 201, the second rf module 202, and the third rf module 203 that use other signals is the same as that of the embodiment, and the corresponding description in the embodiment will be referred to, and the description is omitted herein.

Under the condition that the high-power signal in the working frequency band of the 2.4G wifi signal is strong in the external environment, the receiving path of the N41 signal is saturated, and accordingly, the signal to noise ratio information is obviously deteriorated, so that whether the high-power signal in the working frequency band of the 2.4G wifi signal exists in the external environment can be indirectly detected through 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 of 2501MHz frequency point of the first power, where the 2501MHz is located in the working frequency band of the N41 signal. The first power may be a preset fixed value.

On the one hand, since the working frequency band of the LTE B7 signal and the working frequency band of the N41 signal are partially overlapped, 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, so that the receiving path of the N41 signal can be ensured to normally receive and modulate the CW signal.

The processor controls the second radio frequency module 202 to transmit the analog interference signal. 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 radio frequency 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 a maximum power received by the LNA. The maximum power received by the LNA is summed with the antenna isolation to calculate the power of the analog jammer signal.

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

If a high power signal with a transmission power greater than the maximum power is passed through the LNA, the LNA is damaged by the high power signal; the LNA is not damaged when a signal with a transmit power equal to or less than the maximum power is passed through the LNA.

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

It should be noted that, because the working frequency bands of the N41 signal and the 2.4G wifi signal are not identical, the N41 signal suppresses the analog interference signal to a certain extent when receiving the analog interference signal transmitted by the radio frequency module of the 2.4G wifi signal. The specific inhibition principle is as follows:

The working frequency band of the 2.4G wifi signal is as follows: 2402-2482MHz, the working frequency band of the N41 signal is: 2496-2690MHz. Illustratively, the radio frequency module of the 2.4G wifi signal transmits an analog interference signal of 2480MHz frequency point to the radio frequency module of the N41 signal. The receive path of the radio frequency module for the N41 signal is provided with a bandpass filter that can filter signals outside 2496-2690MHz. 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 can filter 90% of the signals; if the difference between the frequency of the analog interference signal and the minimum 2496 of the operating band of the N41 signal is small, the bandpass filter can filter out 50% of the signal.

Thus, the analog jammer does not damage the LNA of the receive path of the N41 signal, and the maximum power received by the LNA of the receive path of the N41 signal is greater than the maximum power received by the LNA of the receive path of the 2.4G WIFI signal in the face of the analog jammer.

In step S104, the third rf module 203 receives the preset reference signal and the analog interference signal, and detects the first signal-to-noise ratio in the receiving path of the third rf module.

The frequency of the preset reference signal may be located in the working frequency band of the third radio frequency module 203, and when the preset reference signal is received by the third radio frequency module 203, the preset reference signal may be determined as a useful signal; the frequency of the analog interference signal may be located 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 an SNR (SIGNAL-to-NOISE RATIO) calculated from a preset 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 electronic system. The higher the signal-to-noise ratio of the electronic device indicates less noise and the lower the signal-to-noise ratio indicates more noise. The SNR may be determined by the ratio of the useful 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 located outside the working frequency band of the third radio frequency module; the receiving path of the third radio frequency module includes a band-pass 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: in the absence of the interference device 204, filtering the preset reference signal and the analog interference signal by a 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 preset reference signal is located in the working frequency band of the third radio frequency module, for example, the CW signal of the 2501MHz frequency point of the first power transmitted by the radio frequency module of the LTE B38 signal is located in the working frequency band 2496-2690MHz of the N41 signal. The frequency of the analog interference signal is located outside the working frequency band of the third radio frequency module, for example, the 2.4G wifi signal of the 2480MHz frequency point transmitted by the radio frequency module of the 2.4G wifi signal is located outside the working frequency band 2496-2690MHz of the N41 signal.

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

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

The preset reference signal and the analog interference signal are filtered by the band-pass filter 2032, and the filtered preset reference signal and the filtered analog interference signal are obtained. The preset reference signal is located in the working frequency band of the third radio frequency module, so that 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 working frequency band of the third radio frequency module, and a difference value between the analog interference signal and a maximum value or a minimum value of the working frequency band of the third radio frequency module is smaller than or equal to a preset difference threshold, so that the band-pass filter only filters a small amount of analog interference signal, for example, the power of the filtered analog interference signal can 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 located outside the working frequency band of the third radio frequency module; the receiving path of the third radio frequency module includes a band-pass 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 through 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 a preset reference signal and an 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 interference signal may be located outside the operating frequency band of the third radio frequency module. The first interference signal is a signal which is received by the third radio frequency module and is except a preset reference signal and an analog interference signal. In practice, there is likely to be one or more interfering devices 204 in the vicinity of the electronic device that can 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 radio frequency module.

The preset reference signal, the analog interference signal and the first interference signal are filtered by the band-pass filter 2032, so as to obtain a filtered preset reference signal, a filtered analog interference signal and a filtered first interference signal. The preset reference signal is located in the working frequency band of the third radio frequency module, so that 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 working frequency band of the third radio frequency module, and a difference value between the analog interference signal and a maximum value or a minimum value of the working frequency band of the third radio frequency module is smaller than or equal to a preset difference threshold, so that the band-pass filter only filters a small amount of analog interference signal, for example, the power of the filtered analog interference signal can be 90% of the power of the analog interference signal before filtering. The first interference signal is located outside the working frequency band of the third radio frequency module, so that the band-pass filter can filter out part of the first interference signal, for example, the power of the first interference signal after filtering can 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, the first signal-to-noise ratio may be stored for comparison in a subsequent step.

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 the second signal-to-noise ratio in the 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 preset 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 radio frequency module 202 stops transmitting analog interference signals, there are three possibilities:

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

(c2) A new interference signal, which is less power and unlikely to damage the electronic device, occurs in the current environment than when step S104 is performed;

(c3) A new interference signal with 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 the receiving path of the third radio frequency module, the new interference signal can be determined to be noise, the preset reference signal is determined to be a useful signal, so as to calculate and obtain an SNR, and the calculated SNR is determined to be a second signal-to-noise ratio.

If no new interference signal is received in the receiving path of the third radio frequency module, the noise can be regarded as zero approximately, the preset reference signal is determined as a useful signal, so as to calculate the SNR, and the calculated SNR is determined as a second signal-to-noise ratio.

Optionally, detecting, by the third radio frequency module, a second signal-to-noise ratio in a receive path of the third radio frequency 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 the sum of the first interference signal and an unknown new interference signal, or may be a new interference signal.

In the case where the surrounding environment of the electronic device is stable, if the first interference signal is present, 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 or not 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, so as to obtain a filtered preset reference signal and a filtered second interference signal. The preset reference signal is located in the working frequency band of the third radio frequency module, so that 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 working frequency band of the third radio frequency module, so that the band-pass filter can filter out part of the second interference signal, for example, the power of the second interference signal after filtering can 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, receiving, by the third radio frequency module, the preset reference signal and the analog interference signal, and detecting a first signal-to-noise ratio in a receiving path of the third radio frequency module includes: in the starting-up 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 radio frequency module, a second signal-to-noise ratio in a receive path of the third radio frequency module, comprising: and in the starting process of the wireless function of the electronic equipment, detecting a second signal-to-noise ratio in a receiving path of the third radio frequency module through the third radio frequency module.

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

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

In the case where the second radio frequency module is a radio frequency module of a 2.4G WIFI signal, the timing for detecting the second signal-to-noise ratio may be set in a wireless function starting process of the electronic device, so as to determine in advance whether protection measures need to be taken for the electronic device before starting the wireless function. In the wireless function starting process, 2.4G WIFI can be closed by default, whether 2.4G WIFI is opened or not is determined after whether the environment is safe or not is detected, and therefore damage to devices of LNA on a receiving path of 2.4G WIFI is avoided.

Step S108, determining whether to take protection measures for 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.

If the first signal-to-noise ratio is less than the second signal-to-noise ratio, which means that the noise in the second signal-to-noise ratio is less than the noise in the first signal-to-noise ratio, the current environmental safety can be determined without taking protective measures for the electronics of the receiving path 2023 of the second radio frequency module; if the first snr is greater than or equal to the second snr, indicating that the noise in the second snr is equal to or greater than the noise in the first snr, it may be determined that the current environment is unsafe and protective measures need to be taken for the electronics of the receive path 2023 of the second rf module.

Optionally, the second rf module 202 includes a second signal antenna 2021, a transmit path 2022 of the second rf module, a receive 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 transmitting path 2022 of the second radio frequency module, the receiving path 2023 of the second radio frequency module, and the signal receiving protection branch 2024; after determining whether to take protection measures for 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 protection measures are to be 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 to 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 signal receiving protection branch 2024, i.e., bypass path, may withstand stronger interfering signals, i.e., high power signals that may damage the electronics in the receiving path 2023 of the second rf module, typically without damaging the electronics in the signal receiving protection branch 2024, than the receiving path 2023 of the second rf module. When it is determined that protection measures need to be taken for the electronic device of the receiving channel 2023 of the second radio frequency module, a switch control instruction may be sent to the second radio frequency module 202, so that the signal receiving protection branch 2024 in the second radio frequency module 202 is connected to and turned on with the second end of the control switch 2025, the receiving channel 2023 of the second radio frequency module is disconnected from the second end of the control switch 2025, and the second radio frequency module 202 receives the target signal through the signal receiving protection branch 2024.

The target signal may be a useful signal that the user desires to receive through the second radio frequency 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 larger than or equal to a preset difference threshold; according to the comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, determining whether to take protective measures for the electronic device of the receiving path of the second radio frequency module further comprises: if the electronic device of the receiving path of the second radio frequency module is determined to take protective measures, sending a working instruction 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, judging whether the fourth radio frequency module works normally or not; if not, a switch control instruction is sent 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 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. The second rf module may be an rf module of a 2.4G WIFI signal, and the fourth rf module may be an rf module of a 5GWIFI signal, both of which may be used to perform rf signal transmission required in operation of the wireless network.

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

If it is determined that protection measures are to be taken for the electronic device of the receiving channel of the second rf module, scan connection can 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 receiving channel 2023 of the second rf module in the second rf module 202 is kept disconnected from the control switch 2025. If it is determined that connection cannot be made after the preset time, it may be determined that the fourth rf module cannot be used to replace the second rf module, and then the bypass path is selected to protect the electronic device of the receiving path 2023 of the second rf module.

The protection measures include using a fourth rf module, specifically, the processor may issue an operation 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; after a preset time threshold, 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 protection measures of the electronic device are replaced.

The protection measure further includes using 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 turned on 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, if the 5G WIFI can be normally connected and used within the preset time threshold W seconds, it is indicated that there is a normally usable 5G WIFI in the current environment, and then the 2.4G WIFI does not need to be opened;

At present most router all supports 2.4G WIFI and 5G WIFI, consequently even closed 2.4Gwifi, cell-phone terminal also can normally connect and use 5G WIFI under most circumstances, and the speed of 5G WIFI is faster, can not produce the influence to user experience.

If the 5G WIFI can not be normally connected for use within W seconds, a signal receiving protection circuit of 2.4G WIFI is used. In the W second, 5G WIFI can not normally connect and use and then indicate that there is not 5G WIFI that can normally use in the current environment, in order not to influence the user and use WIFI normally then scan the connection to the bypass route of 2.4G WIFI signal. The bypass path can bear stronger interference signals, so switching to the bypass path can reduce the risk of 2.4G wifi failure.

In the embodiment shown in fig. 1, a first radio frequency module is controlled to transmit a preset reference signal, 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 path 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; under the condition that the first radio frequency module transmits a preset reference signal and the second radio frequency module stops transmitting an 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; and determining whether to take protective measures for 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. . According to the embodiment of the application, before the second radio frequency module receives the signal, the first signal-to-noise ratio is detected by the third radio frequency module in the simulation environment and the second signal-to-noise ratio is detected by 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 the electronic device in the receiving channel of the second radio frequency module needs to be protected or not is determined in advance, and the electronic device arranged on the receiving channel of the second radio frequency module is prevented from being damaged by the high-power interference signal.

Fig. 3 is a second flowchart of a method for protecting an electronic device according to an embodiment of the present application.

Step 302, the mobile phone is powered on.

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

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

In step 308, the lte B7 TX path transmits the CW signal with the same intensity, and the N41 receiving path detects the signal-to-noise ratio information B at this time.

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.

Step 312, determining that the current environment is unsafe, if the low noise amplifier of the 2.4G RX path is at risk of damage, turning off the 2.4G wifi by default, and only using the 5G wifi to scan the connection.

Step 314, determining the current environmental security, and normally starting 2.4G wifi for use.

Step 316, judging whether the 5G wifi can be normally connected and used in W seconds.

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

Step 318, keeping the current state unchanged.

Step 320, the signal receiving protection branch of the 2.4G wifi is controlled to be conducted with the 2.4G wifi antenna.

For the above-described embodiment of the electronic device protection method, since it is substantially similar to the above-described embodiment of the electronic device protection method, the description is relatively simple, and the relevant points are only referred to in the description of the foregoing embodiment of the electronic device protection method.

It should be noted that, in the electronic device protection method provided by the embodiment of the present application, the execution 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. In the embodiment of the application, an electronic device protection device is taken as an example to execute an electronic device protection method, and the electronic device protection device provided by the embodiment of the application is described.

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, where the radio frequency assembly includes a first radio frequency module, a second radio frequency module, and a third radio frequency module; the electronic device protection apparatus includes:

The control module 401 is 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 the power of the analog interference signal is determined according to an electronic device power threshold of a receiving channel of the second radio frequency module;

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

A second detection 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, 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 404 is configured to determine whether to take protection measures for 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.

Optionally, the detection module 402 is specifically configured to:

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

The detecting, by the third radio frequency module, a second signal-to-noise ratio in a receiving path of the third radio frequency module includes:

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

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; after determining whether to take protection measures for 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 comprises:

If it is determined that protection measures are taken for the electronic device of the receiving channel of the second radio frequency module, 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.

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 larger than or equal to a preset difference threshold; after determining whether to take protection measures for 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 comprises:

if the electronic device of the receiving path of the second radio frequency module is determined to take protective measures, sending a working instruction 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, judging whether the fourth radio frequency module works normally or not;

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 the working frequency band of the third radio frequency module; the frequency of the analog interference signal is located 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 the first signal-to-noise ratio in the receiving path of the third radio frequency module includes:

Filtering the preset reference signal and the analog interference signal through the band-pass filter under the condition that no interference equipment exists, so as 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, which is received by the third radio frequency module and is 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 radio frequency module, the second signal-to-noise ratio in the receiving path of the third radio frequency 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 which is received by the third radio frequency module and is 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 application can be a device, and can also be a component, an integrated circuit or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), etc., and the non-mobile electronic device may be a server, a network attached storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a Television (TV), a teller machine, a self-service machine, etc., and the embodiments of the present application are not limited in particular.

The electronic device protection device in the embodiment of the application can be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, and the embodiment of the present application is not limited specifically.

The electronic device protection apparatus provided by the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 1 to 3, and in order to avoid repetition, a description is omitted here.

Fig. 5 is a schematic block diagram of an electronic device according to an embodiment of the present application. Optionally, as shown in fig. 5, an embodiment of the present application further provides an electronic device 500, including a processor 501, a memory 502, and a program or an instruction stored in the memory 502 and capable of running on the processor 501, where the program or the instruction implements each process of the above-mentioned embodiment of the protection method for an electronic device when executed by the processor 501, and the process can achieve the same technical effect, so that repetition is avoided and no further description is given here.

The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device.

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

Those skilled in the art will appreciate that the electronic device 600 may further include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 610 by a power management system to perform functions such as managing charge, discharge, and power consumption by 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 shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.

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

Wherein the processor 610 is configured to:

The method comprises the steps of controlling a first radio frequency module to emit a preset reference signal, and controlling a second radio frequency module to emit 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 for:

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

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;

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;

the processor 610 is further configured to:

under the condition that the first radio frequency module transmits a preset reference signal and the second radio frequency module stops transmitting an 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 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 that a preset reference signal is transmitted and the transmission of an analog interference signal is stopped;

the processor 610 is further configured to:

Optionally, the processor 610 is further configured to:

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

in the starting-up 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 radio frequency module, a second signal-to-noise ratio in a receive path of the third radio frequency 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; the processor 610 is further configured to:

If it is determined that protection measures are taken for the electronic device of the receiving channel of the second radio frequency module, a switch control instruction is sent 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 a target signal through the signal receiving protection branch. Transmitting 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 larger than or equal to a preset difference threshold; the processor 610 is further configured to:

if not, a switch control instruction is sent 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 signals through the signal receiving protection branch.

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 located 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 processor 610 is 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 a filtered preset reference signal, a filtered analog interference signal and a filtered first interference signal; the first interference signal is a signal which is received by the third radio frequency module and is except a preset reference signal and an 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.

According to the embodiment of the application, the first signal-to-noise ratio can be determined each time the electronic equipment is started, the second signal-to-noise ratio is determined and whether protection measures are needed is judged when the wireless function is started, so that whether the interference signals possibly threatening the electronic devices exist in the current environment can be judged before the wireless function is put into use, the protection measures are taken in advance, the electronic devices are prevented from being damaged, the first signal-to-noise ratio can be respectively obtained under the condition 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 should be appreciated that in embodiments of the present application, the input unit 604 may include a graphics processor (Graphics Processing Unit, GPU) 6041 and a microphone 6042, with the graphics processor 6041 processing image data of still pictures or video obtained by an image capturing apparatus (e.g., 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. The touch panel 6071 is also called 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, a joystick, and so forth, 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 that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that 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 application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above-mentioned electronic device protection method embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Wherein the processor is a 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 (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the processes of the electronic device protection method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. The 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 preset reference signal and the analog interference signal by the third rf module detects a first signal-to-noise ratio in a receive path of the third rf module, comprising:

3. The method of claim 1, wherein the second radio frequency module comprises a second signal antenna, a transmit path of the second radio frequency module, a receive path of the second radio frequency module, a signal reception 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 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 protection measures for 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 comprises:

4. The method of claim 3, wherein the radio frequency assembly further comprises 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 larger than or equal to a preset difference threshold; after determining whether to take protection measures for 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 comprises:

5. The method of claim 1, wherein the frequency of the preset reference signal is in an operating frequency band of the third radio frequency module; the frequency of the analog interference signal is located 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 the first signal-to-noise ratio in the receiving path of the third radio frequency module includes:

6. The method of claim 1, wherein the frequency of the preset reference signal is in an operating frequency band of the third radio frequency module; the frequency of the analog interference signal is located 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 the first signal-to-noise ratio in the receiving path of the third radio frequency module includes:

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

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 which is received by the third radio frequency module and is except a target reference signal;

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 emit a preset reference signal and controlling the second radio frequency module to emit 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 channel of the third radio frequency module;

the second detection module is used for detecting a second signal-to-noise ratio in a receiving channel of the third radio frequency module through 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;

9. An electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the electronic device protection method of any one of claims 1-7.

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