CN114978211A - Electronic device protection method and electronic equipment - Google Patents

Abstract

The present application discloses an electronic device protection method and electronic device, belonging to the field of electronic devices. An electronic device protection method includes: 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 a power threshold of an electronic device of a receiving path of the second radio frequency module; The preset reference signal and the analog interference signal are received by the third radio frequency module, and the first signal-to-noise ratio in the receiving path of the third radio frequency module is detected; the preset reference signal is transmitted at the first radio frequency module and the second radio frequency module stops transmitting the analog interference In the case of a signal, the third radio frequency module detects the second signal-to-noise ratio in the receiving path of the third radio frequency module; The electronics of the receiving path take protective measures.

Description

Electronic device protection method and electronic device

technical field

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

Background technique

With the development of electronic technology, more and more attention has been paid to the wireless network function of electronic devices. With the explosive growth of the number of electronic devices, the signal emitted by each electronic device inevitably causes interference to other electronic devices in the vicinity. The strength of the signal is usually reflected by the transmit power of the signal. High-power interference signals may even damage electronic devices disposed in signal receiving circuits of electronic equipment.

At present, electronic equipment often first receives the interference signal, and then judges whether the power of the interference signal is greater than the preset power threshold, so as to determine whether protection measures need to be taken. Electronic devices may have been damaged when protective measures were taken.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide an electronic device protection method and electronic device, which can solve the problem of how to avoid high-power interference signals from damaging electronic devices disposed on the 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 includes :

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 a power threshold of an electronic device of a receiving channel of the second radio frequency module ;

Receive the preset reference signal and the analog interference signal by the third radio frequency module, and detect the first signal-to-noise ratio in the receiving path of the third radio frequency module;

In the case that the first radio frequency module transmits the preset reference signal and the second radio frequency module stops transmitting the analog interference signal, the third radio frequency module detects that the receiving path of the third radio frequency module is in the The second signal-to-noise ratio of ;

According to the comparison result between the first signal-to-noise ratio and the second signal-to-noise ratio, it is determined whether to take protection measures for the electronic device of the receiving channel of the second radio frequency module.

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

a first control module, 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, wherein the power of the analog interference signal is based on the reception of the second radio frequency module Electronic device power threshold determination of the channel;

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

a second control module, configured to detect the first radio frequency module through 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 The second signal-to-noise ratio in the receive path of the three radio frequency modules;

A judgment module, configured to determine whether to take protection measures for the electronic device of the receiving channel of the second radio frequency module according to the comparison result between the first signal-to-noise ratio and the second signal-to-noise ratio.

In a third aspect, embodiments of the present application provide an electronic device, the electronic device includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being The processor implements the steps of the electronic device protection method according to the first aspect when executed.

In a fourth aspect, an embodiment of the present application provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the electronic device protection according to the first aspect is implemented steps of the method.

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

In the embodiment of the present application, the first radio frequency module is controlled to transmit the preset reference signal, and the second radio frequency module is controlled to transmit the 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 of the second radio frequency module; The preset reference signal and the analog interference signal are received by the third radio frequency module, and the first signal-to-noise ratio in the receiving path of the third radio frequency module is detected; the preset reference signal is transmitted at the first radio frequency module and the second radio frequency module stops transmitting the analog interference In the case of a signal, the third radio frequency module detects the second signal-to-noise ratio in the receiving path of the third radio frequency module; The electronics of the receiving path take protective measures. . Through the embodiment of the present application, before the second radio frequency module receives the signal, the first signal-to-noise ratio detected by the third radio frequency module in the simulated environment and the second signal-to-noise ratio detected by the third radio frequency module in the current environment can be determined. The comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, thereby predetermining whether it is necessary to take protective measures for the electronic devices in the receiving path of the second radio frequency module, so as to avoid damage to high-power interference signals arranged in the second radio frequency module electronics on the receive path.

Description of drawings

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

2 is a schematic diagram of a hardware framework for implementing an electronic device protection method provided by an embodiment of the present application;

3 is a second schematic flowchart of the electronic device protection method provided by the embodiment of the present application;

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

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

FIG. 6 is a schematic diagram of a hardware structure of an electronic device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of this application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between "first", "second", etc. The objects are usually of one type, and the number of objects is not limited. For example, the first object may be one or more than one. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

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

FIG. 1 is a schematic flowchart of a first electronic device protection method provided by an embodiment of the present application. FIG. 2 is a schematic diagram of a hardware framework for implementing an electronic device protection method provided by an embodiment of the present application.

The electronic device protection method shown in FIG. 1 will be described below with reference to FIG. 2 .

The first radio frequency module 201 may include a transmission path 2012 of the first radio frequency module and a first signal antenna 2011 . Exemplarily, as shown in FIG. 2 , the radio frequency integrated circuit chip, the transmission path 2012 of the first radio frequency module, and the first signal antenna 2011 are sequentially connected in series to form the first radio frequency module 201 .

The radio frequency integrated circuit chip can also be replaced by other unlisted circuit chips with a signal transmitting function. The transmit path 2012 of the first radio frequency module may include a PA (Power Amplifier, power amplifier).

Exemplarily, the working frequency band of the first radio frequency module 201 may be represented by x1-x2. The first radio frequency module 201 may transmit a first signal through the first signal antenna 2011 , and the frequency of the first signal may be located at any frequency point in the working frequency band x1 - x2 of the first radio frequency module 201 .

The third radio frequency module 203 may include a receiving path of the third radio frequency module and a third signal antenna. Exemplarily, as shown in FIG. 2 , the radio frequency integrated circuit chip, the receiving path of the third radio frequency module, and the third signal antenna 2031 are sequentially connected in series to form the third radio frequency module 203 .

The radio frequency integrated circuit chip can also be replaced by other unlisted circuit chips with a signal transmitting function. The receiving path of the third radio frequency module may include an LNA (low noise amplifier, low noise amplifier) 2033 and a band-pass filter 2032. The LNA 2033 may be an amplifier whose noise coefficient is lower than a preset coefficient threshold. It is easy to be damaged under the situation of input. The high-power signal can be the signal that the signal transmission power is greater than the preset power threshold. The band-pass filter can be a filter corresponding to the working frequency band of the third radio frequency module, and is used to convert the frequency in the third radio frequency Signals outside the working frequency band of the module are filtered out, and only signals whose frequencies are within the working frequency band of the third radio frequency module are allowed to pass.

Exemplarily, the working frequency band of the third radio frequency module 203 may be represented by x3-x4. The third radio frequency module 203 may receive a third signal through the third signal antenna 2031 , and the frequency of the third signal may be any frequency point in the operating frequency band x3 - x4 of the third radio frequency module 203 .

The second radio frequency module 202 includes a second signal antenna 2021 , a transmitting path 2022 of the second radio frequency module, a receiving path 2023 of the second radio frequency module, a signal receiving 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 the transmit path 2022 of the second radio frequency module and the receive path 2023 of the second radio frequency module. and one of the signal receiving protection branches 2024 is connected; the transmitting channel 2022 of the second radio frequency module, the receiving channel 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.

Wherein, the wireless connection network integrated circuit chip can also be replaced by other unlisted circuit chips having both a signal transmitting function and a signal receiving function. The transmit path 2022 of the second radio frequency module may include a PA. The receive path 2023 of the second radio frequency module may include an LNA. The control switch 2025 can be a single-pole, three-throw switch, or other types of switches.

Exemplarily, the working frequency band of the second radio frequency module 202 may be represented by x5-x6. The second radio frequency module 203 can transmit or receive a second signal through the second signal antenna 2021 , and the frequency of the second signal can be any frequency point in the working frequency band x5-x6 of the second radio frequency 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 frequency of any two of the first signal, the second signal and the third signal is equal to one another. The difference between can be within a preset value range.

The following takes the first radio frequency module 201 and the third radio frequency module 203 as examples to describe the relationship between the working frequency band of the first radio frequency module 201 and the working frequency band of the third radio frequency module 203 with similar frequencies.

For example, the working frequency band x1-x2 of the first radio frequency module 201 and the working frequency band x3-x4 of the third radio frequency 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 within the working frequency band x1-x2, and the frequency of the third signal is located within the working frequency band x3-x4, then the difference between the frequency of the first signal and the frequency of the third signal can be within the preset value range In [-a1,a1], a is a preset real number.

The relationship between the working frequency band of the first radio frequency module 201 and the working frequency band of the second radio frequency module 202, as well as the relationship between the working frequency band of the second radio frequency module 202 and the working frequency band of the third radio frequency module, are the same as the aforementioned first radio frequency The relationship between the working frequency band of the module 201 and the working frequency band of the third radio frequency module 203 is similar, and reference may be made to the corresponding description part in the foregoing, and details are not repeated here.

As shown in FIG. 2 , the first signal antenna 2011 in the first radio frequency module 201 can transmit a preset reference signal to the third signal antenna 2031 in the third radio frequency module 202, and the frequency of the preset reference signal can be located at the first radio frequency In the working frequency band x1-x2 of the module 201.

The second signal antenna 2021 in the second video module 202 can transmit an analog interference signal to the third signal antenna 2031 in the third radio frequency module 202, and the frequency of the analog interference signal can be located in the working frequency band x5-x6 of the second radio frequency module 202 middle.

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

An electronic device protection method provided by the embodiment shown in FIG. 1 is applied to an electronic device including a radio frequency assembly, and 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 The protection method includes steps S102 to S108.

Electronic devices may include radio frequency components and processors.

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

The processor, which may be connected to the first radio frequency module 201, may be configured to send to the first radio frequency module 201 a first transmission instruction for controlling the first radio frequency module 201 to transmit the preset reference signal.

The processor, which may be connected to the second radio frequency module 202, may be configured to send a second transmission instruction to the second radio frequency module 202 for controlling the second radio frequency module 202 to transmit the analog interference signal.

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

The first radio frequency module 201 is used to simulate and transmit useful signals received by the second radio frequency module 202 during actual use. The second radio frequency module 202 may be a radio frequency module that has electronic device protection requirements when receiving radio frequency signals, and may be used to simulate and transmit high-power interference signals received by the second radio frequency module 202 during actual use.

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

The working frequency bands of the first radio frequency module 201 and the third radio frequency module 203 may overlap, so that the frequency of the preset reference signal can be set within the working frequency band of the third radio frequency module 203, so that the preset reference signal can be determined as The useful signal received by the third radio frequency 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 overlapping parts, so that the frequency of the analog interference signal can be set outside the working frequency band of the third radio frequency module 203, so that the The analog interference signal is determined as the interference signal received by the third radio frequency module 203 .

E.g:

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

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

The first radio frequency module 201 may also be a radio frequency module of an LTE B38 signal, or may be other radio frequency modules determined by the working frequency band of the second radio frequency module 202 .

(b2) The second radio frequency module 202 may be a radio frequency module of a 2.4G wifi signal.

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

The second radio frequency module 202 may also be other radio frequency modules that need to protect electronic devices.

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

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

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

Hereinafter in this specification, the first radio frequency module 201 can be the radio frequency module of LTE B7 signal, the second radio frequency module 202 can be the radio frequency module of 2.4G wifi signal, and the third radio frequency module can be the radio frequency module of N41 signal. For example, in a specific embodiment, the operations performed by each radio frequency module are controlled. The technical concept of the embodiment in which the first radio frequency module 201 , the second radio frequency module 202 and the third radio frequency module 203 adopt the radio frequency modules of other signals is the same as the technical concept of this embodiment, and the corresponding description in this embodiment can be referred to, which will not be repeated below. .

In the case of a strong high-power signal located in the working frequency band of the 2.4G wifi signal in the external environment, the receiving channel of the N41 signal will be saturated, and the signal-to-noise ratio information will be significantly deteriorated accordingly. By detecting the receiving path of the N41 signal, it can indirectly detect whether there is a high-power signal in the working frequency band of the 2.4G wifi signal in the external environment.

The preset reference signal transmitted by the radio frequency module of the LTE B7 signal may be a CW (Continuous Wave, continuous wave) signal with a frequency of 2501 MHz of the first power, and the 2501 MHz 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 partially overlaps with that of the N41 signal, and the CW signal is located in the overlapping part of the frequency band, the receiving channel of the N41 signal can normally receive and modulate 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 channel of the N41 signal can normally receive and adjust 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 the power threshold of the electronic device of the receiving channel 2023 of the second radio frequency module.

As shown in FIG. 2 , the receiving path 2023 of the second radio frequency module may include an LNA, and the power threshold of the electronic device of the receiving path 2023 of the second radio frequency module may be the maximum withstand power of the LNA. By summing the maximum withstand power of the LNA and the antenna isolation, the power of the simulated interference signal can be calculated.

A signal whose transmit power is greater than the maximum withstand power can be regarded as a high-power signal.

If a high-power signal with transmit power greater than the maximum withstand power passes through the LNA, the LNA will be damaged by the high-power signal; when a signal with transmit power less than or equal to the maximum withstand power passes through the LNA, the LNA will not be damaged.

The maximum withstand power of the LNA can be obtained by pre-testing and is a fixed value. Antenna isolation can be measured in advance and is a fixed value.

It should be noted that since the working frequency band of N41 signal and 2.4G wifi signal is not exactly the same, when N41 signal receives the analog interference signal transmitted by the radio frequency module of 2.4G wifi signal, it will suppress the analog interference signal to a certain extent. . The specific suppression principle is as follows:

The working frequency band of 2.4G wifi signal is: 2402-2482MHz, and the working frequency band of N41 signal is: 2496-2690MHz. Exemplarily, the radio frequency module of the 2.4G wifi signal sends an analog interference signal at a frequency of 2480MHz to the radio frequency module of the N41 signal. The receiving channel of the radio frequency module of the N41 signal is provided with a band-pass filter, which can filter signals beyond 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 working frequency band of the N41 signal is large, the bandpass filter can filter out 90% of the signal; If the difference between the minimum value 2496 of the working frequency band of the signal is small, the bandpass filter can filter out 50% of the signal.

Therefore, the analog interference signal will not damage the LNA of the receiving channel of the N41 signal, and in the face of the analog interference signal, the maximum withstand power of the LNA of the receiving channel of the N41 signal is greater than the maximum withstand power of the LNA of the receiving channel of the 2.4G WIFI signal.

In step S104, the preset reference signal and the analog interference signal are received by the third radio frequency module 203, and the first signal-to-noise ratio in the receiving path of the third radio frequency module is detected.

The frequency of the preset reference signal can be located in the working frequency band of the third radio frequency module 203, then the preset reference signal can be determined as a useful signal when the preset reference signal is received by the third radio frequency module 203; the frequency of the analog interference signal can be located in the third radio frequency module 203. Outside the working frequency band of the three radio frequency modules 203 , the analog interference signal may be determined as noise when the analog interference signal is received by the third radio frequency module 203 .

The first signal-to-noise ratio may be an SNR (SIGNAL-NOISE RATIO, signal-to-noise ratio) calculated according to a preset reference signal that is a useful signal and an analog interference signal that is a noise.

SNR refers to the ratio of useful signal to noise in an electronic device or electronic system. A higher signal-to-noise ratio of an electronic device indicates less noise, and a lower signal-to-noise ratio indicates greater noise. SNR can be determined by the ratio of useful signal to 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 the band of the corresponding working frequency band. pass filter 2032; detecting the first signal-to-noise ratio in the receiving path of the third radio frequency module, including: in the absence of the interference device 204, passing the band-pass filter 2032 to the preset reference signal and the analog interference signal. filtering 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.

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 first power 2501MHz frequency 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 outside the working frequency band of the third radio frequency module. For example, the 2.4G wifi signal with the frequency of 2480MHz transmitted by the radio frequency module of the 2.4G wifi signal is outside the working frequency band of the N41 signal 2496-2690MHz.

When there is no interfering device, it can be in the theoretical environment, the distance between any interfering device and the electronic device is greater than the preset interference distance threshold, or it can be the influence of the interference signal emitted by the interfering device on the electronic device small enough to be ignored.

For example, in a theoretical environment, if there is no other interfering device 204 near the electronic device, the third radio frequency module only receives the preset reference signal and the analog interference signal, and only considers the useful signal when calculating the first signal-to-noise ratio. Preset reference signal and analog jammer as noise. Other situations in which there is no interfering device are similar to the theoretical environment, and are not repeated here.

The preset reference signal and the analog interference signal are filtered through the band-pass filter 2032 to obtain the filtered preset reference signal and the filtered analog interference signal. If the preset reference signal is located in the working frequency band of the third radio frequency module, the bandpass filter can pass 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 the difference between the analog interference signal and the maximum or minimum value of the working frequency band of the third radio frequency module is less than or equal to a preset difference threshold, so that the bandpass filter Only a small amount of analog jammers are filtered out, for example, the power of the filtered analog jammers may be 90% of the power of the pre-filtered analog jammers. The first signal-to-noise ratio is calculated and obtained 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 the band of the corresponding working frequency band. pass filter 2032; detecting the first signal-to-noise ratio in the receiving path of the third radio frequency module, including: filtering the preset reference signal, the analog interference signal and the first interference signal through the band-pass filter 2032, and obtain the filtered The preset reference signal, the filtered analog interference signal, and the filtered first interference signal; the first interference signal is a signal other than the preset reference signal and the analog interference signal received by the third radio frequency module; The first signal-to-noise ratio is determined by setting the reference signal, the filtered analog interference signal, and the filtered first 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 first power 2501MHz frequency 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 outside the working frequency band of the third radio frequency module. For example, the 2.4G wifi signal with the frequency of 2480MHz transmitted by the radio frequency module of the 2.4G wifi signal is outside the working frequency band of the N41 signal 2496-2690MHz.

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 other than the preset reference signal and the analog interference signal received by the third radio frequency module. In practical applications, there may be one or more interfering devices 204 that can transmit strong interfering signals near the electronic device. The strong interference signal sent by each interference device 204 together forms the first interference signal, and further, 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 through the bandpass filter 2032 to obtain the filtered preset reference signal, the filtered analog interference signal, and the filtered first interference signal. If the preset reference signal is located in the working frequency band of the third radio frequency module, the bandpass filter can pass 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 the difference between the analog interference signal and the maximum or minimum value of the working frequency band of the third radio frequency module is less than or equal to a preset difference threshold, so that the bandpass filter Only a small amount of analog jammers are filtered out, for example, the power of the filtered analog jammers may be 90% of the power of the pre-filtered analog jammers. 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 filtered first interference signal may be the same as that of the first interference signal before filtering. 50% of the power. The filtered analog interference signal and the filtered first interference signal are summed, and the first signal-to-noise ratio is calculated 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 can be stored for comparison in subsequent steps.

Step S106, when the first radio frequency module transmits the preset reference signal and the second radio frequency module stops transmitting the analog interference signal, the third radio frequency module detects the second signal-to-noise ratio in the receiving path of the third radio frequency module.

The processor may control the first radio frequency module 201 to continue to transmit the preset reference signal, and the processor may control the second radio frequency module 202 to stop transmitting the analog interference signal.

In the case that the second radio frequency module 202 stops transmitting the analog interference signal, there are three possibilities:

(c1) Compared with when step S104 is performed, there is no unknown new interference signal in the current environment;

(c2) Compared with when step S104 is performed, a new interference signal with less power and unlikely to damage the electronic device appears in the current environment;

(c3) Compared with when step S104 is performed, a new interference signal with higher power that may damage the electronic device appears in the current environment.

If an unknown new interference signal is received in the receiving path of the third radio frequency module, the new interference signal may be determined as noise, and the preset reference signal may be determined as a useful signal to calculate the SNR, and the calculated SNR may be determined as the 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 approximately regarded as zero, the preset reference signal can be determined as a useful signal, the SNR can be obtained by calculation, and the SNR obtained by calculation can be determined as the second signal-to-noise signal. Compare.

Optionally, detecting the second signal-to-noise ratio in the receiving path of the third radio frequency module by the third radio frequency module includes: performing the preset reference signal and the second interference signal on the preset reference signal and the second interference signal by the bandpass filter in the third radio frequency module. filter to obtain a filtered preset reference signal and a filtered second interference signal; the second interference signal is a signal other than the target reference signal received by the third radio frequency module; according to the filtered preset reference signal and the filtered The ratio of the second interference signal determines the second signal-to-noise ratio.

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 a situation where the surrounding environment of the electronic device is stable, if there is a first interference signal, the first interference signal may be considered to remain unchanged. That is, when calculating the first signal-to-noise ratio and the second signal-to-noise ratio, the first interference signal exists around the electronic device. In this case, the first interference signal will not interfere with the determination result of whether the electronic device needs to be protected.

If there is no first interference signal when calculating the first signal-to-noise ratio and the second signal-to-noise ratio, the interference signals received by the third radio frequency module are all new interference signals.

The preset reference signal and the second interference signal are filtered through the band pass filter 2032 to obtain the filtered preset reference signal and the filtered second interference signal. If the preset reference signal is located in the working frequency band of the third radio frequency module, the bandpass filter can pass 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 filtered second interference signal may be the same as that of the first interference signal before filtering. 70% of the power. The second signal-to-noise ratio is calculated and obtained according to the ratio of the filtered preset reference signal to the filtered second interference signal.

Optionally, receiving the preset reference signal and the analog interference signal through the third radio frequency module, and detecting the first signal-to-noise ratio in the receiving path of the third radio frequency module, includes: during the booting process of the electronic device, using the third radio frequency module receiving the preset reference signal and the analog interference signal, and detecting the first signal-to-noise ratio in the receiving path of the third radio frequency module; detecting the second signal-to-noise ratio in the receiving path of the third radio frequency module by the third radio frequency module, including: During the start-up process of the wireless function of the electronic device, the second signal-to-noise ratio in the receiving path of the third radio frequency module is detected by the third radio frequency module.

The electronic device can be a mobile phone or other electronic device with an antenna device. The wireless function is the wifi function, which can use a 2.4G WIFI signal RF module, or a 5G WIFI signal RF module, or other wireless signal RF modules.

The timing of detecting the first SNR may be set during the process of starting the electronic device, so as to avoid interference of the calculation result of the first SNR by other signal transmission processes of the electronic device unrelated to the technical solution.

In the case where the second radio frequency module is a radio frequency module of 2.4G WIFI signal, the timing of detecting the second signal-to-noise ratio can be set in the process of starting the wireless function of the electronic device, so as to determine in advance whether the electronic device to take protective measures. During the startup of the wireless function, the 2.4G WIFI can be turned off by default, and the 2.4G WIFI can be turned on after checking whether the environment is safe, so as to avoid device damage to the LNA on the receiving path of the 2.4G wifi.

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

If the first signal-to-noise ratio is smaller than the second signal-to-noise ratio, it means that the noise in the second signal-to-noise ratio is smaller than the noise in the first signal-to-noise ratio, and it can be determined that the current environment is safe, and there is no need for 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 means that the noise in the second signal-to-noise ratio is equal to or greater than the noise in the first signal-to-noise ratio, and it can be determined that the current environment is unsafe , protection measures need to be taken for the electronic devices of the receiving channel 2023 of the second radio frequency module.

Optionally, the second radio frequency module 202 includes a second signal antenna 2021, a transmission path 2022 of the second radio frequency module, a reception path 2023 of the second radio frequency module, a signal receiving protection branch 2024, and a control switch 2025; One end is connected to the second signal antenna 2021, and the 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 protective measures for the electronic devices of the receiving path 2023 of the second radio frequency module, the method further includes: if it is determined that the electronic devices of the receiving path 2023 of the second radio frequency module are determined If protection measures are taken, a switch control command is 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 the second end of the control switch 2025, and the second radio frequency module 202 receives protection through the signal Branch 2024 receives the target signal.

Compared with the receiving path 2023 of the second radio frequency module, the signal receiving protection branch 2024, that is, the bypass path, can withstand stronger interference signals, that is, high power that may damage the electronic devices in the receiving path 2023 of the second radio frequency module. signal, usually cannot damage the electronic devices in the signal receiving protection branch 2024. When it is determined that protection measures need to be taken for the electronic device of the receiving path 2023 of the second radio frequency module, a switch control instruction can be sent to the second radio frequency module 202, so that the signal receiving protection branch 2024 in the second radio frequency module 202 and the control switch 2025 are connected The second end is connected and turned on, 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 expects 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 path of the fourth radio frequency module and the power threshold of the electronic device of the receiving path of the second radio frequency module is greater than is equal to the preset difference threshold; after determining whether to take protective measures for 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, it also includes: if it is determined that the second radio frequency When the electronic device of the receiving path of the module takes protective measures, it sends a work instruction to the fourth radio frequency module; the work instruction is used to control the fourth radio frequency module to receive the target signal; after the preset time threshold, it is judged whether the fourth radio frequency module is working normally; If not, a switch control command is sent to the second radio frequency module, so that the signal receiving protection branch in the second radio frequency module is connected to 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 includes a fourth radio frequency module having the same function as the second radio frequency module. Exemplarily, 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 for wireless network operation.

The power threshold of the electronic device in the receiving channel of the fourth radio frequency module may be the maximum withstand power of the electronic device in the receiving channel of the fourth radio frequency module. The power threshold of the electronic device in the receiving path of the second radio frequency module may be the maximum withstand power of the electronic device in the receiving path of the second radio frequency module. The maximum withstand power corresponding to the fourth radio frequency module is greater than the maximum withstand power corresponding to the second radio frequency module, and the difference between the two is greater than or equal to a preset difference threshold.

If it is determined to take protection measures for the electronic devices of the receiving channel of the second radio frequency module, the fourth radio frequency module can be preferentially scanned and connected. If it can be connected, the fourth radio frequency module is used to receive the target signal, and the second radio frequency module is kept. The receiving path 2023 of the second radio frequency module in 202 is disconnected from the control switch 2025 . If it is determined that the connection cannot be made after the preset time, it can be determined that the fourth radio frequency module cannot be used to replace the second radio frequency module. Step back, choose to use the bypass path to protect the electronic device of the receiving path 2023 of the second radio frequency module.

The protection measures include using the fourth radio frequency module. Specifically, the processor can send a work instruction to the fourth radio frequency module, and control the receiving path 2023 of the second radio frequency module to disconnect from the second end of the control switch 2025 . The work instruction is used to control the fourth radio frequency module to receive the target signal; after a preset time threshold, it is determined whether the fourth radio frequency module is working normally, if so, it is determined that the fourth radio frequency module can replace the second radio frequency module to receive the target signal and continue to use normally the fourth radio frequency module. If not, replace the protective measures for the electronics.

The protection measures also include using a bypass path. Specifically, the processor can send a switch control instruction 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 the second end of the control switch 2025 in a conductive manner, The receiving path 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 .

For example, if the 5G wifi can be connected and used normally within the preset time threshold of W seconds, it means that there is a 5G WIFI that can be used normally in the current environment, and there is no need to turn on the 2.4G wifi;

At present, most routers support 2.4G wifi and 5G wifi, so even if 2.4G wifi is turned off, the mobile terminal can still connect to and use 5G WIFI normally in most cases, and the speed of 5G wifi is faster, which will not affect the user experience. make an impact.

If the 5G wifi cannot be connected normally within W seconds, use the 2.4G WIFI signal receiving protection circuit. Within W seconds, if the 5G wifi cannot be connected and used normally, it means that there is no 5G WIFI that can be used normally in the current environment. In order not to affect the user's normal use of wifi, the bypass path of the 2.4G WIFI signal is scanned and connected. The bypass path can withstand 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 , the first radio frequency module is controlled to transmit a preset reference signal, and the second radio frequency module is controlled to transmit an analog interference signal, wherein the power of the analog interference signal is based on the electronic device of the receiving path of the second radio frequency module. The power threshold is determined; the preset reference signal and the analog interference signal are received by the third radio frequency module, and the first signal-to-noise ratio in the receiving path of the third radio frequency module is detected; the preset reference signal is transmitted in the first radio frequency module and the second radio frequency module In the case of stopping transmitting the analog interference signal, the third radio frequency module detects the second signal-to-noise ratio in the receiving path of the third radio frequency module; The electronic devices of the receiving channel of the two radio frequency modules take protective measures. . Through the embodiment of the present application, before the second radio frequency module receives the signal, the first signal-to-noise ratio detected by the third radio frequency module in the simulated environment and the second signal-to-noise ratio detected by the third radio frequency module in the current environment can be determined. The comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, thereby predetermining whether it is necessary to take protective measures for the electronic devices in the receiving path of the second radio frequency module, so as to avoid damage to high-power interference signals arranged in the second radio frequency module electronics on the receive path.

FIG. 3 is a second schematic flowchart of the electronic device protection method provided by the embodiment of the present application.

Step 302, the mobile phone is turned on.

Step 304, during the boot process: the LTE B7 TX transmits a CW wave signal of a certain intensity, the 2.4G wifi TX transmits a signal of a specific size, and the N41 receiving channel is turned on to detect the signal-to-noise ratio information A at this time and store it to be called.

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

Step 306, enable the wireless network function.

That is to open the wifi function of the mobile phone, the default 2.4G wifi is off.

Step 308, the LTE B7 TX channel transmits a CW wave signal of the same strength, and the N41 receiving channel detects the signal-to-noise ratio information B at this time.

Step 310, determine whether A is greater than or equal to B.

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

Step 312 , it is determined that the current environment is not safe, and the low-noise amplifier of the 2.4G RX channel is at risk of damage, then the 2.4G wifi is turned off by default, and only 5G wifi is used to scan for connections.

Step 314, it is determined that the current environment is safe, and the 2.4G wifi is normally enabled and used.

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

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

Step 318, keep the current state unchanged.

Step 320, control the signal receiving protection branch of the 2.4G wifi to conduct with the 2.4G wifi antenna.

For the above-mentioned electronic device protection method embodiments, since they are basically similar to the foregoing electronic device protection method embodiments, the description is relatively simple.

It should be noted that, in the electronic device protection method provided by the embodiments of the present application, the execution body may be an electronic device protection device, or a control module in the electronic device protection device for executing the electronic device protection method. In the embodiment of the present application, the electronic device protection device provided by the embodiment of the present application is described by taking the electronic device protection device executing the electronic device protection method as an example.

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

As shown in FIG. 4 , the electronic device protection device is applied to an electronic device including a radio frequency component, and the radio frequency component includes a first radio frequency module, a second radio frequency module and a third radio frequency module; the electronic device protection device 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, wherein the power of the analog interference signal is based on the receiving path of the second radio frequency module The electronic device power threshold is determined;

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 the first signal-to-noise ratio in the receiving path of the third radio frequency module;

The second detection module 403 is configured to detect the reference signal through 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 the second signal-to-noise ratio in the receive path of the third radio frequency module;

The judgment module 404 is configured to determine, according to the comparison result between the first signal-to-noise ratio and the second signal-to-noise ratio, whether to take protective measures for the electronic device of the receiving channel of the second radio frequency module.

Optionally, the detection module 402 is specifically used for:

During the booting process of the electronic device, the preset reference signal and the analog interference signal are received by the third radio frequency module, and a first signal-to-noise ratio in the receiving path of the third radio frequency module is detected;

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:

During the start-up process of the wireless function of the electronic device, the second signal-to-noise ratio in the receiving path of the third radio frequency module is detected by the third radio frequency module.

Optionally, the second radio frequency module includes a second signal antenna, a signal transmission path, a reception 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 to the control switch. The second signal antenna is connected, and the second end of the control switch is connected to one of the signal transmission path, the reception path of the second radio frequency module, and the signal reception protection branch; After determining whether to take protection measures for the electronic device of the receiving channel of the second radio frequency module, the comparison result of a signal-to-noise ratio and the second signal-to-noise ratio further includes:

If it is determined that protection measures are taken for the electronic devices of the receiving path 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 to the second radio frequency module. The second end of the control switch is connected and turned on, and the second radio frequency module receives the 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 electronic device power threshold of the receiving path of the fourth radio frequency module is the same as that of the receiving path of the second radio frequency module. The difference between the power thresholds of the electronic devices is greater than or equal to a preset difference threshold; determining whether the receiving path of the second radio frequency module has a After the electronic device has taken protective measures, it also includes:

If it is determined that protection measures are taken for the electronic device of the receiving path of the second radio frequency module, a work instruction is sent to the fourth radio frequency module; the work instruction is used to control the fourth radio frequency module to receive the target signal;

After a preset time threshold, determine whether the fourth radio frequency module is working normally;

If not, send a switch control instruction to the second radio frequency module, so that the signal receiving protection branch in the second radio frequency module is connected to the second end of the control switch, and the second radio frequency module The signal is received by 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 third radio frequency module The receiving channel of the third radio frequency module includes a band-pass filter corresponding to the working frequency band; the detecting the first signal-to-noise ratio in the receiving channel of the third radio frequency module includes:

In the case where there is no interfering device, the preset reference signal and the analog interference signal are filtered through the band-pass filter, and the filtered preset reference signal and the filtered analog interference signal are obtained. interfering signal;

The first signal-to-noise ratio is determined according to the ratio of the filtered preset reference signal and 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 third radio frequency module The receiving channel of the third radio frequency module includes a band-pass filter corresponding to the working frequency band; the detecting the first signal-to-noise ratio in the receiving channel of the third radio frequency module includes:

The preset reference signal, the analog interference signal, and the first interference signal are filtered through the bandpass filter to obtain the filtered preset reference signal, the filtered analog interference signal, and the filtered the first interference signal; the first interference signal is a signal other than the preset reference signal and the analog interference signal received by the third radio frequency module;

The first signal-to-noise ratio is determined 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:

The preset reference signal and the second interference signal are filtered by the band-pass filter in the third radio frequency module to obtain the filtered preset reference signal and the filtered second interference signal signal; the second interference signal is a signal other than the target reference signal received by the third radio frequency module;

The second signal-to-noise ratio is determined according to the ratio of the filtered preset reference signal and the filtered second interference signal.

In the embodiment of the present application, the first radio frequency module is controlled to transmit the preset reference signal, and the second radio frequency module is controlled to transmit the 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 of the second radio frequency module; The preset reference signal and the analog interference signal are received by the third radio frequency module, and the first signal-to-noise ratio in the receiving path of the third radio frequency module is detected; the preset reference signal is transmitted at the first radio frequency module and the second radio frequency module stops transmitting the analog interference In the case of a signal, the third radio frequency module detects the second signal-to-noise ratio in the receiving path of the third radio frequency module; The electronics of the receiving path take protective measures. . Through the embodiment of the present application, before the second radio frequency module receives the signal, the first signal-to-noise ratio detected by the third radio frequency module in the simulated environment and the second signal-to-noise ratio detected by the third radio frequency module in the current environment can be determined. The comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, thereby predetermining whether it is necessary to take protective measures for the electronic devices in the receiving path of the second radio frequency module, so as to avoid damage to high-power interference signals arranged in the second radio frequency module electronics on the receive path.

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 apparatus may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (personal digital assistant). assistant, PDA), etc., the non-mobile electronic device can be a server, a network attached storage (NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc. This application Examples are not specifically limited.

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

The electronic device protection device provided in the embodiments of the present application can implement each process implemented by the method embodiments in FIG. 1 to FIG. 3 , and to avoid repetition, details are not repeated here.

FIG. 5 is a schematic block diagram of an electronic device provided by 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, a program or instruction stored in the memory 502 and executable on the processor 501, When the program or instruction is executed by the processor 501, each process of the foregoing electronic device protection method embodiment can be achieved, and the same technical effect can be achieved. To avoid repetition, details are not described here.

It should be noted that the electronic devices in the embodiments of the present application include the aforementioned mobile electronic devices and non-mobile electronic devices.

FIG. 6 is a schematic diagram of a hardware structure of an electronic device provided by an embodiment of the present application.

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, and a processor 610, etc. part.

Those skilled in the art can understand that the electronic device 600 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 610 through a power management system, so as to manage charging, discharging, and power management through the power management system. consumption management and other functions. The structure of the electronic device shown in FIG. 6 does not constitute a limitation on the electronic device, and the electronic device may include more or less components than those shown in the figure, or combine some components, or arrange different components, which will not be repeated here. .

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

The processor 610 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 the electronic device of the receiving channel of the second radio frequency module;

The radio frequency unit 601 is used for:

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

processor 610, also for:

Receive the preset reference signal and the analog interference signal by the third radio frequency module, and detect the first signal-to-noise ratio in the receiving path of the third radio frequency module;

The radio frequency unit 601 is also used for:

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

processor 610, also for:

When the first radio frequency module transmits the preset reference signal and the second radio frequency module stops transmitting the analog interference signal, the third radio frequency module detects the second signal-to-noise ratio in the receiving path of the third radio frequency module;

The radio frequency unit 601 is also used for:

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

processor 610, also for:

According to the comparison result between the first signal-to-noise ratio and the second signal-to-noise ratio, it is determined whether to take protection measures for the electronic device of the receiving channel of the second radio frequency module.

In the embodiment of the present application, the first radio frequency module is controlled to transmit the preset reference signal, and the second radio frequency module is controlled to transmit the 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 of the second radio frequency module; The preset reference signal and the analog interference signal are received by the third radio frequency module, and the first signal-to-noise ratio in the receiving path of the third radio frequency module is detected; the preset reference signal is transmitted at the first radio frequency module and the second radio frequency module stops transmitting the analog interference In the case of a signal, the third radio frequency module detects the second signal-to-noise ratio in the receiving path of the third radio frequency module; The electronics of the receiving path take protective measures. . Through the embodiment of the present application, before the second radio frequency module receives the signal, the first signal-to-noise ratio detected by the third radio frequency module in the simulated environment and the second signal-to-noise ratio detected by the third radio frequency module in the current environment can be determined. The comparison result of the first signal-to-noise ratio and the second signal-to-noise ratio, thereby predetermining whether it is necessary to take protective measures for the electronic devices in the receiving path of the second radio frequency module, so as to avoid damage to high-power interference signals arranged in the second radio frequency module electronics on the receive path.

Optionally, the processor 610 is further configured to:

The preset reference signal and the analog interference signal are received by the third radio frequency module, and the first signal-to-noise ratio in the receiving path of the third radio frequency module is detected, including:

During the booting process of the electronic device, the preset reference signal and the analog interference signal are received by the third radio frequency module, and the first signal-to-noise ratio in the receiving path of the third radio frequency module is detected;

Detecting the second signal-to-noise ratio in the receiving path of the third radio frequency module by the third radio frequency module includes:

During the start-up process of the wireless function of the electronic device, the second signal-to-noise ratio in the receiving path of the third radio frequency module is detected by the third radio frequency module.

Optionally, the second radio frequency module includes a second signal antenna, a signal transmission path, a reception 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 to the second signal antenna, and the control switch is The second end of the device is connected to one of the signal transmission path, the reception path of the second radio frequency module, and the signal reception protection branch; the processor 610 is also used for:

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 to the second end of the control switch and is connected to conduct. The second radio frequency module receives the target signal through the signal receiving protection branch. launch path launch 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 path of the fourth radio frequency module and the power threshold of the electronic device of the receiving path of the second radio frequency module is greater than is equal to the preset difference threshold; the processor 610 is further configured to:

If it is determined that protection measures are taken for the electronic device of the receiving path of the second radio frequency module, a work instruction is sent to the fourth radio frequency module; the work instruction is used to control the fourth radio frequency module to receive the target signal;

After the preset time threshold, determine whether the fourth radio frequency module is working normally;

If not, a switch control command is sent to the second radio frequency module, so that the signal receiving protection branch in the second radio frequency module is connected to 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 includes the band of the corresponding working frequency band. pass filter; processor 610, further for:

Detecting the first signal-to-noise ratio in the receive path of the third radio frequency module includes:

In the absence of an interfering device, the preset reference signal and the analog interference signal are filtered through a band-pass filter to obtain the filtered preset reference signal and the filtered analog interference signal;

The first signal-to-noise ratio is determined according to the ratio of the filtered preset reference signal and 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 the band of the corresponding working frequency band. pass filter; processor 610, further for:

Detecting the first signal-to-noise ratio in the receive path of the third radio frequency module includes:

The preset reference signal, the analog interference signal and the first interference signal are filtered by the band-pass filter, and the filtered preset reference signal, the filtered analog interference signal and the filtered first interference signal are obtained respectively; the first interference signal is obtained. The signal is a signal other than the preset reference signal and the analog interference signal received by the third radio frequency module;

The first signal-to-noise ratio is determined 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:

Detecting the second signal-to-noise ratio in the receiving path of the third radio frequency module by the third radio frequency module includes:

The preset reference signal and the second interference signal are filtered 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 the third radio frequency Signals other than the target reference signal received by the module;

The second signal-to-noise ratio is determined according to the ratio of the filtered preset reference signal and the filtered second interference signal.

Through the embodiments of the present application, the first signal-to-noise ratio can be determined every time the electronic device is turned on, the second signal-to-noise ratio can be determined when the wireless function is turned on, and it can be judged whether protection measures need to be taken, so that the wireless function can be used before the wireless function is put into use. Determine whether there are interference signals that may threaten electronic devices in the current environment, so as to take protective measures in advance to avoid damage to electronic devices, and can also obtain the first signal-to-noise ratio in the absence of interference devices and in the presence of interference devices. The threat of the actual interference signal can be accurately reflected by the second signal-to-noise ratio.

It should be understood that, in this embodiment of the present application, the input unit 604 may include a graphics processor (Graphics Processing Unit, GPU) 6041 and a microphone 6042. camera) to process the image data of still pictures or videos. The display unit 606 may include a display panel 6061, which 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, a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not described herein again. Memory 609 may be used to store software programs as well as various data, including but not limited to application programs and operating systems. The processor 610 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and an application program, and the like, and the modem processor mainly processes wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 610.

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

Wherein, the processor is the processor in the electronic device described in the foregoing embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

An 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 used to run a program or an instruction to implement the above embodiment of the electronic device protection method and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.

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

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes 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 the reverse order depending on the functions involved. To perform functions, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to some examples may be combined in other examples.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present application can be embodied in the form of computer software products that are essentially or contribute to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk , CD), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) execute the methods described in the various embodiments of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims (10)

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:

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.

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:

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.

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:

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.

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:

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.

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:

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.

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:

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.

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;

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.

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.

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