WO2021217991A1

WO2021217991A1 - Signal compensation method and apparatus, and storage medium

Info

Publication number: WO2021217991A1
Application number: PCT/CN2020/113276
Authority: WO
Inventors: 叶紫权; 吕颜; 陈金玲; 吕新伟; 郑小平; 刘新润
Original assignee: 威胜集团有限公司
Priority date: 2020-04-29
Filing date: 2020-09-03
Publication date: 2021-11-04
Also published as: CN111398759A

Abstract

A signal compensation method and apparatus, and a storage medium. The method comprises: first, when there is no arc fault in a first line, sending an analog arc signal of a first amplitude to a second line by means of a signal output module, so that the analog arc signal flows to the first line through an external load (S10); re-obtaining the analog arc signal in the first line, and obtaining the second amplitude of the analog arc signal (S20); finally, calculating the expected value of the first amplitude, and calculating the difference between the expected value and the second amplitude (S30); and adjusting the output of a dynamic gain module according to the magnitudes of the difference and of a preset error value (S40).

Description

Signal compensation method, device and storage medium

This application claims the priority of the Chinese patent application filed on April 29, 2020 with the application number 202010360031.3 and the name "Signal compensation method, device and storage medium", the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of electrical safety, and in particular to a signal compensation method, device and storage medium.

Background technique

Arc fault is a very important cause of electrical fire. Therefore, it is necessary to detect arc fault during circuit operation. The existing arc fault detection mainly adopts high-frequency current detection methods, that is, when there is a fault arc, a high-frequency signal will appear in the line current. Because the amplitude of the high-frequency signal is very low, the high-frequency signal needs to be compensated for after the input The detection device performs sampling, and the detection device analyzes the sampling result to determine whether there is a fault arc.

In the existing arc fault detection methods, the problem of high-frequency signal transmission attenuation caused by line impedance is not considered. If the current line has strong suppression of high-frequency signals, the amplitude attenuation of the high-frequency signals when transmitted to the detection device is large, resulting in Below the detection threshold, it will cause false negatives. Since the transmission impedance of the line changes dynamically, setting a fixed gain to compensate for high-frequency signals also has drawbacks. A fixed gain setting too high will introduce noise interference and cause false alarms of the detection device; a fixed gain setting too low may cause detection failures. ; Therefore, the existing arc fault detection methods cannot accurately compensate high-frequency signals, resulting in inaccurate arc fault detection results.

Technical solutions

The main purpose of this application is to provide a signal compensation method, device and storage medium, aiming to solve the technical problem that the existing arc fault detection methods cannot accurately compensate high-frequency signals, resulting in inaccurate arc fault detection results .

To achieve the above objective, the present application provides a signal compensation method, which is applied to a fault arc detection device, the fault arc detection device includes a detection chip, a signal output module, and a dynamic gain module. The method includes the following steps:

In the case that there is no arc fault in the first line, sending the analog arc signal of the first amplitude to the second line through the signal output module, so that the analog arc signal flows to the first line through the external load;

Acquiring the analog arc signal again in the first line, and obtaining the second amplitude of the analog arc signal;

Calculating the expected value of the first amplitude, and calculating the difference between the expected value and the second amplitude;

According to the magnitude of the difference and the preset error value, the output of the dynamic gain module is adjusted.

In an embodiment, before the step in the case where there is no arc fault in the first line, the method further includes:

In the preset detection time, the current signal in the first line is acquired every preset first period, and the current difference value of the low-frequency component of the current signal in the adjacent preset period is calculated, and the current difference with the largest value is calculated. Value as the maximum value of the sudden change;

Acquiring a maximum amplitude value of a high-frequency component in a specific frequency band of the current signal within a preset detection time, and using the maximum amplitude value as a maximum amplitude value;

According to the maximum value of the amplitude and the maximum value of the sudden change, it is determined whether there is a fault arc in the first line.

In an embodiment, the step of judging whether there is a fault arc on the first line according to the maximum amplitude and the maximum abrupt change includes:

When the maximum value of the amplitude is higher than the preset first threshold value and the maximum value of the sudden change is higher than the preset second threshold value, determining that there is a fault arc in the first line;

When the maximum amplitude value is not higher than the preset first threshold value, and/or the sudden change maximum value is not higher than the preset second threshold value, it is determined that there is no arc fault in the first line.

In an embodiment, after the step of determining that there is a fault arc in the first line, the method further includes:

In the case of a fault arc in the first line, an alarm message is output to the outside.

In an embodiment, after the step of acquiring the current signal in the first line at a predetermined first period every interval, the method further includes:

Amplify the current signal;

Obtain low-frequency components in the amplified current signal, and obtain high-frequency signals in a specific frequency band in the amplified current signal.

In an embodiment, the step of sending the analog arc signal of the first amplitude to the second line through the signal output module includes:

Send a detection signal to the signal output module, so that the signal output module sends an analog arc signal corresponding to the detection signal to the second line according to the detection signal.

In an embodiment, the step of sending a detection signal to the signal output module includes:

Send a detection signal to the signal output module every preset time interval, or;

Obtain the current signal in the first line every preset second period, and calculate the current difference between the current signals of adjacent preset periods;

When the current difference exceeds a preset difference, a detection signal is sent to the signal output module.

In an embodiment, the step of adjusting the output of the dynamic gain module according to the magnitude of the difference and the preset error value includes:

Calculate the expected value minus the second amplitude value, and when the value is greater than the preset error value, control the dynamic gain module to increase the gain.

In addition, in order to achieve the above objective, the present application also provides a signal compensation device, the signal compensation device includes: a memory, a processor, and a signal compensation program stored in the memory and running on the processor, so When the signal compensation program is executed by the processor, the steps of the signal compensation method described above are implemented.

In addition, in order to achieve the above-mentioned object, the present application also provides a computer-readable storage medium having a signal compensation program stored on the computer-readable storage medium, and when the signal compensation program is executed by a processor, the above-mentioned signal compensation method is implemented. A step of.

This application discloses a signal compensation method, device and storage medium. First, when there is no arc fault in the first line, a signal output module sends a first amplitude analog arc signal to the second line to make the simulation The arc signal flows to the first circuit through the external load; the analog arc signal is obtained again in the first circuit, and the second amplitude of the analog arc signal is obtained; finally, the expected value of the first amplitude is calculated, and the expected value and the second amplitude are calculated Difference: Adjust the output of the dynamic gain module according to the difference and the preset error value.

The detection chip in this application sends the analog arc signal of the first amplitude to the second circuit, and then obtains the analog arc signal of the second amplitude from the first circuit. Since the analog arc signal is attenuated during the transmission process, it passes Calculate the difference between the expected value of the first amplitude and the second amplitude, and adjust the output of the dynamic gain module according to the difference and the preset error value to achieve precise compensation for the attenuation of the high-frequency signal due to line impedance suppression , So that the detection result of the fault arc is more accurate.

Description of the drawings

FIG. 1 is a schematic diagram of a device structure of a hardware operating environment involved in a solution of an embodiment of the present application;

FIG. 2 is a schematic flowchart of an embodiment of a signal compensation method according to the present application;

3 is a schematic diagram of the module structure of an embodiment of the signal compensation device of the present application;

FIG. 4 is a schematic flowchart of another embodiment of a signal compensation method according to the present application.

The realization, functional characteristics, and advantages of the purpose of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Embodiments of the present invention

In order to make the purpose, technical solutions, and advantages of this application clearer and clearer, the following further describes the application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application.

As shown in FIG. 1, FIG. 1 is a schematic diagram of a terminal structure of a hardware operating environment involved in a solution of an embodiment of the present application.

The terminal of this application is a signal compensation device, and the terminal can also be other terminal devices with storage functions.

As shown in FIG. 1, the terminal may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to implement connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a magnetic disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

In an embodiment, the terminal may also include a camera, a Wi-Fi module, etc., which will not be repeated here.

Those skilled in the art can understand that the terminal structure shown in FIG. 1 does not constitute a limitation on the terminal, and may include more or less components than shown in the figure, or combine some components, or arrange different components.

In the terminal shown in FIG. 1, the network interface 1004 is mainly used to connect to a back-end server and communicate with the back-end server; the user interface 1003 mainly includes an input unit such as a keyboard. The keyboard includes a wireless keyboard and a wired keyboard for connecting to a client. Perform data communication with the client; and the processor 1001 can be used to call the signal compensation program stored in the memory 1005 and perform the following operations:

Further, the processor 1001 may call the signal compensation program stored in the memory 1005, and also perform the following operations:

Amplify the current signal;

The specific embodiments of the signal compensation device are basically the same as the following embodiments of the signal compensation method, and will not be repeated here.

Please refer to FIG. 2, which is a schematic flowchart of an embodiment of a signal compensation method according to the present application. The signal compensation method provided in this embodiment includes the following steps:

Step S10, in the case that there is no arc fault in the first line, send the analog arc signal of the first amplitude to the second line through the signal output module, so that the analog arc signal flows to the first line through the external load ；

The signal compensation method provided in this embodiment can be applied to a signal compensation device, and can also be applied to other arc fault detection devices. For details, please refer to FIG. 3, which is a schematic diagram of the module structure of an embodiment of the signal compensation device of this application. In Figure 3, the first line is the live line L, and the second line is the neutral line N. It should be understood that when the first line is the neutral line, the second line is set as the live line, and the first line and the second line need to be Two different lines.

First, detect the arc fault on the first line. In the case that there is no arc fault on the first line, the detection chip outputs a detection signal to the signal output module, and the signal output module sends an analog arc signal to the second line. , Set the current amplitude of the analog arc signal to a fixed first amplitude.

Step S20: Obtain the analog arc signal again in the first line, and obtain the second amplitude of the analog arc signal;

The analog arc signal of the second circuit flows into the first circuit via the external load, and is acquired by the detection chip again. At this time, the detection chip obtains the second amplitude of the analog arc signal acquired again. It is easy to understand that the signal attenuation occurs during the transmission of the analog arc signal. The degree of signal attenuation is related to the transmission distance and the type of load connected to the line. Therefore, the value of the second amplitude should be less than the value of the first amplitude. .

Step S30: Calculate the expected value of the first amplitude, and calculate the difference between the expected value and the second amplitude.

Step S40: Adjust the output of the dynamic gain module according to the magnitude of the difference and the preset error value.

After the second amplitude of the simulated arc is obtained, the expected value of the first amplitude is calculated. It is easy to understand that after the simulated arc signal of the first amplitude is sent on the second line, it flows into the detection chip 10, There is a corresponding amplifying circuit to amplify the analog arc signal, the expected value of the first amplitude, that is, in the ideal state, the analog arc signal of the first amplitude is transmitted from the second line to the first line, the analog arc signal The amplitude of the signal amplified by a fixed gain without attenuation. The value of the expected value minus the second amplitude value is the difference value. In this embodiment, an error value is also preset, the difference value is compared with the preset error value, and the dynamic gain module 20 is adjusted according to the comparison result. Output.

The detection chip in this embodiment sends the analog arc signal of the first amplitude to the second circuit, and then obtains the analog arc signal of the second amplitude from the first circuit. Since the analog arc signal is attenuated during transmission, By calculating the difference between the expected value of the first amplitude and the second amplitude, and adjusting the output of the dynamic gain module according to the difference and the preset error value, the accuracy of the attenuation of the high-frequency signal caused by the suppression of the line impedance is achieved. Compensation, so that the detection result of the fault arc is more accurate.

Further, please refer to FIG. 4, which is a schematic flowchart of another embodiment of a signal compensation method according to the present application. Before step S10, when there is no arc fault in the first line, the method further includes:

Step S50, within a preset detection time, obtain the current signal in the first line at a preset first period every interval, and calculate the current difference between the low-frequency components of the current signal in the adjacent preset period, and set the value to the maximum The current difference is regarded as the maximum value of the sudden change;

Step S60: Obtain the maximum amplitude of the high-frequency component of the specific frequency band of the current signal within a preset detection time, and use the maximum amplitude as the maximum amplitude;

Step S70, judging whether there is a fault arc on the first line according to the maximum value of the amplitude and the maximum value of the sudden change.

In this application, it is necessary to determine that there is no arc fault in the first line before the dynamic gain can be adjusted. The method of detecting the arc fault in this embodiment is to obtain the current signal in the first line every preset first cycle, and calculate the difference between the current signals of adjacent cycles to obtain the current difference with the largest value. .

For example, take 10ms as the detection period, obtain N sample value sequences in this period, calculate the absolute value of the difference between adjacent sample values, and then find the one with the largest absolute value of the difference as the maximum value of the sudden change.

At the same time, the current amplitude of the high-frequency component of the specific frequency band of the current signal during the preset detection time is obtained, and the maximum current amplitude is taken as the maximum amplitude. In this embodiment, the maximum value of the sudden change and the maximum value of the amplitude that can reflect the current change in the first line are obtained in the above-mentioned manner, so as to accurately determine whether there is a fault arc according to the actual working condition of the first line.

Further, the step of judging whether there is a fault arc in the first line according to the maximum value of the amplitude and the maximum value of the sudden change includes:

Step S71, when the maximum value of the amplitude is higher than the preset first threshold value and the maximum value of the sudden change is higher than the preset second threshold value, it is determined that there is a fault arc in the first line;

Step S72: When the maximum amplitude value is not higher than the preset first threshold value, and/or the sudden change maximum value is not higher than the preset second threshold value, it is determined that there is no arc fault in the first line.

In this embodiment, a first threshold and a second threshold are also preset, where the first threshold is a value set corresponding to the maximum value of the amplitude, and the second threshold value is a value set corresponding to the maximum value of the sudden change. If the value of the maximum value of the amplitude is high The preset first threshold value indicates that the current amplitude is too high. If the value of the maximum value of the sudden change is higher than the preset second threshold value, it indicates that the current has a sudden change. When the maximum amplitude is higher than the preset first threshold, and the maximum value of the sudden change is higher than the second preset threshold, that is, the current amplitude is too high and the current sends a sudden change, it means that there is a fault arc in the first line. , As long as the value of the maximum amplitude is not higher than the preset first threshold, or the value of the sudden change maximum is not higher than the preset second threshold, it indicates that there is no arc fault in the first line.

This embodiment presets a first threshold and a second threshold, and compares the maximum amplitude and the maximum abrupt value with the first and second thresholds respectively to determine whether there is excessive circuit amplitude and current abrupt changes in the first line , So as to accurately determine whether there is a fault arc in the first line.

Further, after the above step S71 determines that there is a fault arc in the first line, the method further includes:

In step S73, when there is a fault arc in the first line, an alarm information is output to the outside.

Please refer to Fig. 3, the signal compensation device of this embodiment is also provided with an alarm module, and the alarm module is connected to the detection chip. If there is an arc fault in the first line, the detection chip outputs an alarm signal value to the alarm module, and the alarm module can send out an alarm by sounding an alarm, so that the technician can eliminate the arc fault in the line in time.

Further, after the step S50 described above obtains the current signal in the first line every preset first period, the method further includes:

Step S80, amplify the current signal;

Step S90: Obtain low-frequency components in the amplified current signal, and obtain high-frequency signals in a specific frequency band in the amplified current signal.

Referring to FIG. 3, the signal compensation device in this embodiment further includes an amplifying module, a low-pass filtering module, and a band-pass filtering module. It is easy to understand that the amplitude of the current signal obtained from the first line is small, so it is necessary to set an amplifier module to amplify the obtained current signal. As shown in Figure 3, part of the amplified current signal flows into the low-pass filter. Module, the low-pass filter module obtains the low-frequency components in the current signal. The low-frequency signal in this embodiment is generally a current signal of 50 Hz to 3.2 kHz; the other part of the amplified current signal flows into the band-pass filter module to filter out the specific frequency band High frequency current signal. Generally, the frequency band of the current signal corresponding to the detection chip is divided into three frequency bands: 20kHz to 100kHz, 2MHz to 2.5MHz, and 8MHz to 10MHz. The preferred frequency band is 8MHz to 10MHz, that is, only current signals with a frequency band of 8MHz to 10MHz can pass. Band pass filter module.

In this embodiment, the current signal is amplified and screened in the above manner to ensure that the amplified and screened current signal meets the requirements of the detection chip.

Further, the step of sending the analog arc signal of the first amplitude to the second line through the signal output module includes:

Step S11: Send a detection signal to the signal output module, so that the signal output module sends an analog arc signal corresponding to the detection signal to the second line according to the detection signal.

Please refer to FIG. 3, which can be obtained from FIG. 3. The signal compensation device further includes a signal output module, and the signal output module includes a signal controller and a signal generator. Specifically, the detection chip sends the detection signal to the signal controller of the signal output module, and the signal controller obtains the signal frequency band corresponding to the detection chip according to the detection signal, and sends the detection signal to the signal generator, and the signal generator outputs the detection signal according to the detection signal. The analog arc signal conforming to the frequency band of the detection chip.

For example, the frequency band corresponding to the detection chip is 8MHz to 10MHz, and the analog arc signal sent by the signal generator is a current signal in the frequency band of 8MHz to 10MHz.

Further, the step of sending a detection signal to the signal output module includes:

Step S111, sending a detection signal to the signal output module every preset time interval, or;

Step S112: Obtain the current signal in the first line every preset second period, and calculate the current difference between the current signals of adjacent preset periods;

Step S113: When the current difference exceeds a preset difference, a detection signal is sent to the signal output module.

There are two time periods for the detection chip to send the detection signal. First, the detection chip can send the detection signal to the signal output module at a preset time interval each time. Preferably, the preset time is set to 1 second, that is, the detection chip interval is 1 second. Send a detection signal to the signal output module. It is easy to understand that the detection chip can send a detection signal to the signal output module at any time within 1 second, so that the signal output module sends an analog arc signal. As a preferred solution, the detection chip is detecting When the current zero-crossing point in the first line is reached, the control signal output module sends an analog arc signal to reduce the influence of interference signals.

Second, the detection chip can preset a second cycle every interval, such as 10 milliseconds, acquire the current signal in the first circuit every 10 milliseconds, and calculate the current difference between current signals of adjacent preset cycles. In the example, a preset difference value is also set. Preferably, the preset difference value is set to 3A. When the current difference value exceeds the preset difference value, it is considered that the topology of the first line has changed significantly, and the signal output module Send a heartbeat.

In this embodiment, the timing for the signal output module to send the analog arc signal is determined in the above-mentioned manner, so as to adjust the output of the dynamic gain module in time to achieve precise compensation for the attenuation of the high-frequency signal due to the suppression of the line impedance.

Further, the step of adjusting the output of the dynamic gain module according to the magnitude of the difference value and the preset error value includes:

Step S41: Calculate the value obtained by subtracting the second amplitude from the expected value, and when the value is greater than the preset error value, control the dynamic gain module to increase the gain.

It is easy to understand that because the analog arc signal has signal attenuation during the transmission process, the expected value can be subtracted from the second amplitude to obtain the corresponding value, and then compare the value with the preset error value. If it is greater than the expected value Set the error value, indicating that the attenuation of the analog arc signal is too high during the transmission process, then control the dynamic gain module to increase the compensation gain; when the difference between the expected value and the second amplitude is not greater than the preset error value, it indicates the analog arc signal If the signal attenuation during transmission is within the acceptable range, there is no need to increase the compensation gain of the dynamic gain module.

In addition, an embodiment of the present application also proposes a computer-readable storage medium having a signal compensation program stored on the computer-readable storage medium, and when the signal compensation program is executed by a processor, the operations of the signal compensation method described above are implemented.

The specific embodiments of the computer-readable storage medium of the present application are basically the same as the foregoing embodiments of the signal compensation method, and will not be repeated here.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or system. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or system that includes the element.

The serial numbers of the foregoing embodiments of the present application are for description only, and do not represent the superiority or inferiority of the embodiments.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

The above are only the preferred embodiments of the application, and do not limit the scope of the patent for this application. Any equivalent structure or equivalent process transformation made using the content of the description and drawings of the application, or directly or indirectly applied to other related technical fields , The same reason is included in the scope of patent protection of this application.

Claims

A signal compensation method, wherein, applied to a fault arc detection device, the fault arc detection device includes a detection chip, a signal output module, and a dynamic gain module,

The input end of the detection chip is connected to the first line, the input end of the detection chip is connected to the output end of the dynamic gain module, and the first output end of the detection chip is connected to the feedback end of the dynamic gain module. The input end of the dynamic gain module is connected to the first line;

The input terminal of the signal output module is connected to the second output terminal of the detection chip; the output terminal of the signal output module is connected to the second line;

The method includes the following steps:

In the case that there is no arc fault in the first line, sending the analog arc signal of the first amplitude to the second line through the signal output module, so that the analog arc signal flows to the first line through the external load;

Acquiring the analog arc signal again in the first line, and obtaining the second amplitude of the analog arc signal;

Calculating the expected value of the first amplitude, and calculating the difference between the expected value and the second amplitude;

According to the magnitude of the difference and the preset error value, the output of the dynamic gain module is adjusted.
The signal compensation method according to claim 1, wherein, before the step in the case where there is no arc fault in the first line, the method further comprises:

In the preset detection time, the current signal in the first line is acquired every preset first period, and the current difference value of the low-frequency component of the current signal in the adjacent preset period is calculated, and the current difference with the largest value is calculated. Value as the maximum value of the sudden change;

Acquiring a maximum amplitude value of a high-frequency component in a specific frequency band of the current signal within a preset detection time, and using the maximum amplitude value as a maximum amplitude value;

According to the maximum value of the amplitude and the maximum value of the sudden change, it is determined whether there is a fault arc in the first line.
3. The signal compensation method according to claim 2, wherein the step of judging whether there is a fault arc in the first line according to the maximum amplitude and the maximum abrupt change comprises:

When the maximum value of the amplitude is higher than the preset first threshold value and the maximum value of the sudden change is higher than the preset second threshold value, determining that there is a fault arc in the first line;

When the maximum amplitude value is not higher than the preset first threshold value, and/or the sudden change maximum value is not higher than the preset second threshold value, it is determined that there is no arc fault in the first line.
The signal compensation method according to claim 3, wherein after the step of determining that there is a fault arc in the first line, the method further comprises:

In the case of a fault arc in the first line, an alarm message is output to the outside.
3. The signal compensation method according to claim 2, wherein after the step of obtaining the current signal in the first line at a predetermined first period every interval, the method further comprises:

Amplify the current signal;

Obtain low-frequency components in the amplified current signal, and obtain high-frequency signals in a specific frequency band in the amplified current signal.
The signal compensation method according to claim 1, wherein the step of sending the analog arc signal of the first amplitude to the second line through the signal output module comprises:

Send a detection signal to the signal output module, so that the signal output module sends an analog arc signal corresponding to the detection signal to the second line according to the detection signal.
7. The signal compensation method according to claim 6, wherein the step of sending the detection signal to the signal output module comprises:

Send a detection signal to the signal output module every preset time interval, or;

Obtain the current signal in the first line every preset second period, and calculate the current difference between the current signals of adjacent preset periods;

When the current difference exceeds a preset difference, a detection signal is sent to the signal output module.
5. The signal compensation method according to claim 1, wherein the step of adjusting the output of the dynamic gain module according to the magnitude of the difference and the preset error value comprises:

Calculate the expected value minus the second amplitude value, and when the value is greater than the preset error value, control the dynamic gain module to increase the gain.
A signal compensation device, wherein the device comprises: a memory, a processor, and a signal compensation program stored in the memory and capable of being run on the processor, the signal compensation program being configured to implement as claimed in claim 1. To the steps of the signal compensation method described in any one of 8.
A storage medium, wherein a signal compensation program is stored on the storage medium, and when the signal compensation program is executed by a processor, the steps of the signal compensation method according to any one of claims 1 to 8 are realized.