Signal sending and receiving device and method

Abstract

The invention provides a signal sending and receiving device and method, and relates to the technical field of communication. In the application, the signal sending device comprises a signal generation module, a signal modulation module and a signal sending module; the signal generation module is used for generating a first signal carrying target data; the wavelength corresponding to the first signal is smaller than a set first wavelength threshold value; the signal modulation module is used for performing signal modulation on a preset fundamental wave signal according to the first signal to obtain a second signal carrying target data; wherein the wavelength corresponding to the fundamental wave signal is larger than a set second wavelength threshold value, the second wavelength threshold value is larger than the first wavelength threshold value, and the wavelength of the second signal is the same as that of the fundamental wave signal; and the signal sending module is used for carrying out electromagnetic conversion on the second signal to obtain a target signal and sending the target signal to the signal receiving device, so that the communication cost is reduced while relatively long wave communication is realized in relatively long distance, underwater and other scenes.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a device and method for sending and receiving signals. Background Art

[0002] In a communication system, the length of the antenna used by the signal transmitter and the signal receiver is usually affected by the wavelength of the electromagnetic wave used for communication between the signal transmitter and the signal receiver. Therefore, long-wave communication or ultra-long-wave communication requires a longer antenna (e.g., an antenna of several kilometers) and a larger power transmitter (e.g., a power transmitter of more than a gigawatt). This makes the cost of long-wave communication or ultra-long-wave communication extremely high.

[0003] However, long-wave communication or ultra-long-wave communication is an indispensable special communication tool for scenarios such as submarine communication, underground mines and ultra-long-distance communication. Therefore, how to achieve long-wave communication or ultra-long-wave communication while reducing the cost required for long-wave communication or ultra-long-wave communication is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a device and method for sending and receiving signals, which are used to reduce the cost required for communication while achieving longer wave communication (such as long wave communication or ultra-long wave communication).

[0005] In a first aspect, an embodiment of the present application provides a signal sending device, which may include: a signal generating module, a signal modulating module and a signal sending module; wherein:

[0006] The signal generating module is used to generate a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold;

[0007] The signal modulation module is used to perform signal modulation on a preset fundamental wave signal according to the first signal to obtain a second signal carrying the target data; wherein the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal;

[0008] The signal sending module is used to perform electromagnetic conversion on the second signal to obtain a target signal, and send the target signal to a signal receiving device.

[0009] In an optional embodiment, the signal sending module may include a plurality of electromagnetic conversion antennas, and the plurality of electromagnetic conversion antennas are arranged according to a Halbach array.

[0010] In an optional embodiment, the signal sending device may also include a power amplification module respectively connected to the signal modulation module and the signal sending module, and the power amplification module is used to power amplify the second signal and send the power-amplified second signal to the signal sending module.

[0011] In a second aspect, the embodiment of the present application further provides a signal receiving device, which may include: a signal receiving module and a signal parsing module; wherein:

[0012] The signal receiving module is used to receive the target signal sent by the signal sending device, and send the target signal to the signal analyzing module;

[0013] The signal analysis module is used to perform magnetic gradient analysis processing and demodulation processing on the target signal in sequence to obtain a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold.

[0014] In an optional embodiment, the signal receiving module is a weak magnetic sensor, and the magnetic gradient measurement sensitivity of the weak magnetic sensor is greater than a set measurement sensitivity threshold.

[0015] In an optional embodiment, the signal analysis module may include a magnetoelectric conversion submodule and a signal demodulation submodule; wherein,

[0016] The magnetoelectric conversion submodule is used to perform magnetic gradient analysis on the target signal to obtain a second signal carrying the target data, and send the second signal to the signal demodulation submodule; the second signal is obtained by modulating a preset fundamental wave signal according to the first signal, the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal;

[0017] The signal demodulation submodule is used to demodulate the second signal to obtain the first signal.

[0018] In an optional embodiment, the signal receiving device may further include a signal amplification module and / or a data display module; wherein,

[0019] The signal amplification module is used to amplify the first signal to obtain the amplified first signal;

[0020] The data display module is used to display the target data carried by the first signal.

[0021] In a third aspect, an embodiment of the present application further provides a signal sending method of the signal sending device as described in the first aspect, and the method may include:

[0022] Generate a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold;

[0023] Performing signal modulation on a preset fundamental wave signal according to the first signal to obtain a second signal carrying the target data; wherein the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal;

[0024] The second signal is electromagnetically converted to obtain a target signal, and the target signal is sent to a signal receiving device.

[0025] In a fourth aspect, an embodiment of the present application further provides a signal receiving method of the signal receiving device as described in the second aspect, and the method may include:

[0026] receiving a target signal sent by a signal sending device;

[0027] The target signal is sequentially subjected to magnetic gradient analysis processing and demodulation processing to obtain a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold.

[0028] In an optional embodiment, sequentially performing magnetic gradient analysis processing and demodulation processing on the target signal to obtain a first signal carrying target data includes:

[0029] Perform magnetic gradient analysis on the target signal to obtain a second signal carrying the target data, and demodulate the second signal to obtain the first signal; wherein the second signal is obtained by modulating a preset fundamental wave signal according to the first signal, the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal.

[0030] In a fifth aspect, an embodiment of the present application further provides a communication system, which may include a signal sending device and a signal receiving device; wherein:

[0031] The signal sending device is used to generate a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold; a preset fundamental wave signal is modulated according to the first signal to obtain a second signal carrying the target data; wherein the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal; the second signal is electromagnetically converted to obtain a target signal, and the target signal is sent to the signal receiving device;

[0032] The signal receiving device is used to receive the target signal sent by the signal sending device; and sequentially perform magnetic gradient analysis processing and demodulation processing on the target signal to obtain the first signal carrying target data.

[0033] The beneficial effects of this application are as follows:

[0034] In the signal sending device provided in the embodiment of the present application, after generating the first signal carrying the target data, the first signal can be modulated to a fundamental wave signal with a longer wavelength, that is, the higher-frequency first signal is modulated to a lower-frequency fundamental wave signal, thereby realizing long-wave large information communication. In addition, the target signal obtained by electromagnetic conversion of the second signal modulated by the first signal and the fundamental wave signal can be sent to the signal receiving device. In this way, longer-wave communication (such as long-wave communication or ultra-long-wave communication) can be realized without using a longer antenna and a larger power transmitter, so the cost required for longer-wave communication is greatly reduced. That is, while realizing longer-wave communication, the cost required for communication is reduced.

[0035] In addition, other features and advantages of the present application will be described in the subsequent description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described here are used to provide a further understanding of the present application, constitute a part of the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0037] Figure 1 A schematic diagram of a system architecture of an optional communication system applicable to an embodiment of the present application;

[0038] Figure 2 A schematic diagram of the structure of a signal sending device provided in an embodiment of the present application;

[0039] Figure 3 A schematic diagram of the structure of a solenoid coil provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of an arrangement and combination of an electromagnetic conversion antenna array provided in an embodiment of the present application;

[0041] Figure 5 A schematic diagram of the structure of a signal receiving device provided in an embodiment of the present application;

[0042] Figure 6 A method based on the embodiment of the present application is provided Figure 2 A schematic diagram of an implementation flow of a signal sending method;

[0043] Figure 7 A method based on the embodiment of the present application is provided Figure 5 Schematic diagram of the implementation flow of the signal receiving method. DETAILED DESCRIPTION

[0044] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0045] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0046] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions of other terms will be given in the description below. It should be noted that the concepts of "first", "second", etc. mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0047] It should be noted that the modifications of "one" and "plurality" mentioned in the present application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0048] The names of the messages or information exchanged between multiple devices in the embodiments of the present application are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0049] First, the design concept of the embodiment of the present application is briefly introduced below:

[0050] In a communication system, the length of the antenna used by the signal transmitting end and the signal receiving end is usually affected by the wavelength of the electromagnetic wave used for communication between the signal transmitting end and the signal receiving end. Exemplarily, the length of the antenna used by the signal transmitting end and the signal receiving end can be half or a quarter of the wavelength of the electromagnetic wave used for communication between the signal transmitting end and the signal receiving end, etc. In this case, a better sending and receiving effect can be obtained. When the signal transmitting end and the signal receiving end use longer wave communication (such as long wave communication or ultra-long wave communication), the length of the antenna used by the signal transmitting end and the signal receiving end may need to be up to several thousand meters, and a transmission power of several thousand megawatts or even tens of thousands of megawatts is required, which leads to extremely high communication and maintenance costs, and also causes extremely low energy utilization and a large area.

[0051] However, longer wave communication methods such as long wave communication or ultra-long wave communication can better realize communication in scenarios such as submarine communication, underground mines and ultra-long distance communication. Therefore, how to reduce the cost of long wave communication or ultra-long wave communication while realizing long wave communication or ultra-long wave communication is an urgent problem to be solved.

[0052] In view of this, in order to achieve longer wave communication (such as long wave communication or ultra-long wave communication) while reducing the cost required for communication between the signal transmitting end and the signal receiving end. Figure 1 As shown, the communication system may include: a signal sending device 11 and a signal receiving device 12. The signal sending device 11 may exchange information with the signal receiving device 12 through a communication network and a magnetic transmission medium. The communication mode adopted by the aforementioned communication network may include: a wireless communication mode and a wired communication mode.

[0053] Exemplarily, the signal sending device 11 can access the network through cellular mobile communication technology and communicate with the signal receiving device 12, wherein the cellular mobile communication technology, for example, includes the fifth generation mobile communication (5th generation mobile networks, 5G) technology or the next generation mobile communication technology. Optionally, the signal sending device 11 can access the network through a short-range wireless communication method and communicate with the signal receiving device 12, wherein the short-range wireless communication method, for example, includes wireless fidelity (wireless fidelity, Wi-Fi) technology.

[0054] In addition, the above-mentioned magnetic transmission medium may include but is not limited to: air, seawater, vacuum and other media.

[0055] The embodiment of the present application does not impose any restriction on the number of communication devices involved in the above application scenario. For example, there may be more signal sending devices 11, or more signal receiving devices 12, or other devices may be included. Figure 1 As shown, in the embodiment of the present application, only the signal sending device 11 and the signal receiving device 12 are described as examples, and the above-mentioned communication devices and their respective functions are briefly introduced below.

[0056] See also Figure 2 As shown, it is a schematic diagram of the structure of a signal sending device provided in an embodiment of the present application. The signal sending device 11 may include: a signal generating module 111, a signal modulating module 112 and a signal sending module 113; wherein,

[0057] The signal modulation module 112 is respectively connected to the signal generation module 111 and the signal transmission module 113. The signal generation module can be used to generate a first signal carrying target data. The wavelength corresponding to the aforementioned first signal is less than the set first wavelength threshold. Exemplarily, the aforementioned target data can be audio, etc., and the aforementioned first signal can be a shortwave signal (i.e., a high-frequency signal), then the aforementioned set first wavelength threshold can be 100 meters.

[0058] The signal modulation module 112 can be used to perform signal modulation on a preset fundamental wave signal according to the first signal to obtain a second signal carrying target data, wherein the wavelength corresponding to the aforementioned fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal.

[0059] Exemplarily, the preset fundamental wave signal may be a long wave signal (i.e., a low frequency (LF) signal), and the second wavelength threshold value may be 1000 meters. For another example, the preset fundamental wave signal may be an ultra-long wave signal (i.e., a very low frequency (VLF) signal), and the second wavelength threshold value may be 10000 meters. The present application embodiment does not specifically limit this.

[0060] The signal sending module 113 can be used to perform electromagnetic conversion on the second signal, obtain a target signal, and send the target signal to the signal receiving device 12 .

[0061] Based on the above method, after the first signal carrying the target data is generated by the signal generation module 111, the first signal can be modulated into a fundamental wave signal with a longer wavelength through the signal modulation module 112, that is, the higher-frequency first signal is modulated into a lower-frequency fundamental wave signal, thereby realizing longer-wave large-information communication, and further solving the problem that the traditional transmission system is too large and expensive, it is difficult to realize two-way communication and has only a very small information load.

[0062] Furthermore, the signal sending module 113 can send the target signal obtained by electromagnetically converting the second signal obtained by modulating the first signal and the fundamental wave signal to the signal receiving device 12. In this way, longer wave communication (such as long wave communication or ultra-long wave communication) can be achieved without using a longer antenna and a higher power transmitter, thereby greatly reducing the cost required for longer wave communication. That is, while achieving longer wave communication, the cost required for communication is reduced.

[0063] It should be understood that the above-mentioned signal generation module 111 can be composed of a signal source and a modulator. The signal source can generate target data, and the modulator can modulate the target data generated by the signal source into a first signal. For example, the target signal generated by the signal source can be voice data, and the first signal can be a continuous signal with a frequency of 2kHz.

[0064] The signal modulation module 112 can modulate the amplitude information of the first signal onto the preset fundamental signal through a signal synthesizer (e.g., an analog adder), thereby obtaining a second signal carrying target data. Exemplarily, the signal modulation module 112 can modulate the 2kHz first signal onto an 80Hz fundamental signal through a signal synthesizer. It can be seen that the signal modulation module 112 implements the parasitic modulation of the low-frequency signal on the high-frequency signal.

[0065] In order to better solve the problem that the traditional transmission system (i.e. the signal sending end) is too large and expensive due to the long antenna of long-wave communication. Figure 2As shown, the signal transmission module 113 may include multiple electromagnetic conversion antennas. Optionally, the multiple electromagnetic conversion antennas are arranged in a Halbach array. In this way, the strongest directional magnetic field can be generated with a minimum number of electromagnetic conversion antennas, which reduces the use of electromagnetic conversion antennas and further reduces communication costs.

[0066] In addition, the electromagnetic conversion antenna may have other names, which are not limited in the embodiments of the present application.

[0067] Exemplarily, the above-mentioned multiple electromagnetic conversion antennas can be multiple solenoid coils, each of which can generate a certain magnetic field when powered on. Due to the mutual cancellation and superposition characteristics of the Halbach array composed of the aforementioned multiple solenoid coils, the size of the longer-wave electromagnetic wave transmitting antenna has no logical correlation with its wavelength. That is, the signal sending device 11 (or signal sending module 113) can achieve high-efficiency directional transmission of various powers with a smaller surface and volume.

[0068] See also Figure 3 As shown, the head of the solenoid coil (i.e., the starting point of the coil winding) is the south pole (S pole) of the magnetic field formed when the solenoid coil is energized, and the tail of the solenoid coil (i.e., the end point of the coil winding) is the north pole (N pole) of the magnetic field formed when the solenoid coil is energized. Optionally, the solenoid coil can be wound clockwise or counterclockwise. In addition, the solenoid coil can specifically be an inductor coil with a magnetic core, which is not specifically limited in the embodiments of the present application.

[0069] It should be understood that as the size of the Halbach array composed of electromagnetic conversion antennas increases, the signal sending device 11 (or the signal sending module 113) can achieve the transmission of higher power signals.

[0070] Take the example of a Halbach array composed of 12 solenoid coils in the signal sending module 113. Figure 4 As shown in (A) of FIG. 1 , the shape of the Halbach array consisting of 12 solenoid coils can be a linear shape. Figure 4 As shown in (B), the shape of the aforementioned Halbach array consisting of 12 solenoid coils can be circular. This embodiment of the present application does not specifically limit this, as long as it can form a magnetic field emission array that gathers energy in one direction.

[0071] In an optional implementation, Figure 2 As shown, the signal sending device 11 may further include: a power amplification module 114 connected to the signal modulation module 112 and the signal sending module 113 respectively. The power amplification module 114 may be used to amplify the power of the second signal and send the amplified second signal to the signal sending module 113.

[0072] For example, the power amplification module 114 may be a high-power amplifier with an operating frequency range of 20 Hz to 20 kHz. The high-power amplifier may amplify the power of the modulation signal (ie, the second signal) synthesized by the signal modulation module 112 .

[0073] Based on the above manner, it is ensured that the subsequent signal sending module 113 can convert the relatively high-power electrical signal (i.e., the second signal after power amplification) generated by the power amplification module 114 into a relatively high-power magnetic signal (i.e., the target signal), thereby realizing long-distance and relatively long-wave communication between the signal sending device 11 and the signal receiving device 12. In addition, it should be understood that the power and impedance of the Halbach array in the signal sending module 113 are matched to the power amplification module 114.

[0074] See also Figure 5 As shown, it is a structural schematic diagram of a signal receiving device provided in an embodiment of the present application. The signal receiving device 12 may include: a signal receiving module 121 and a signal analyzing module 122; wherein,

[0075] The signal receiving module 121 can be used to receive the target signal sent by the signal sending device 11, and send the target signal to the signal analysis module 122. The signal analysis module 122 can be used to receive the target signal sent by the signal analysis module 122, and sequentially perform magnetic gradient analysis processing and demodulation processing on the target signal to obtain a first signal carrying target data.

[0076] Optionally, the signal receiving module 121 may be a weak magnetic sensor. The magnetic gradient measurement sensitivity of the aforementioned weak magnetic sensor (which can characterize the ability of the weak magnetic field change that the weak magnetic sensor can detect) is greater than a set measurement sensitivity threshold. For example, the signal receiving module 121 may specifically be a superconducting quantum interference device (SQUID) weak magnetic sensor. The SQUID weak magnetic sensor can receive magnetic gradient signals as low as 30 femtotesla (fT). The magnetic gradient measurement sensitivity of the SQUID weak magnetic sensor is 30fT / Hz. 1 / 2 For example, this value means that at a frequency of 1 Hz, the sensitivity of the magnetic field measurement can reach 100 fT per square root of Hz.

[0077] In addition, the above-mentioned SQUID weak magnetic sensor can be a SQUID weak magnetic sensor with a Josephson junction, so that magnetic gradient measurement with higher sensitivity can be achieved. For example, a magnetic gradient signal as low as 20 fT can be received.

[0078] By means of the above-mentioned multiple electromagnetic conversion antennas arranged in the Halbach array (i.e., the signal sending module 113 or the signal sending module 11), and a weak magnetic sensor with high magnetic gradient measurement sensitivity (i.e., the signal receiving module 121 or the signal receiving module 12), a bidirectional, small-volume, high-sensitivity, longer-wave communication signal receiving and transmitting system can be constructed.

[0079] In an optional implementation, Figure 5 As shown, the signal analysis module 122 may also include a magnetoelectric conversion submodule 122a and a signal demodulation submodule 122b. The magnetoelectric conversion submodule 122a may be used to perform magnetic gradient analysis on the target signal, obtain a second signal carrying target data, and send the second signal to the signal demodulation submodule 122b. The signal demodulation submodule 122b may be used to demodulate the second signal to obtain a first signal carrying target data.

[0080] That is, the signal receiving device 11 can realize the inversion calculation for the target signal (i.e., the magnetic signal) through the magneto-electric conversion submodule 122a, and can convert the target signal obtained by electromagnetic conversion into an electrical signal (i.e., the second signal). In addition, the signal receiving device 11 can separate the superimposed waveform or signal of the inverted calculated signal (i.e., the second signal) through the signal demodulation submodule 122b, so as to realize the separation adjustment of the composite signal (i.e., the second signal).

[0081] Optionally, the magnetoelectric conversion submodule 122a may also be referred to as a signal inversion calculation submodule, and of course it may have other names, which are not specifically limited in the present embodiment of the application. Similarly, the signal demodulation submodule 122b may also be referred to as a signal adjustment submodule, and of course it may have other names, which are not specifically limited in the present embodiment of the application.

[0082] In an optional implementation, Figure 5 As shown, the signal receiving device 12 may further include a signal amplification module 123 and / or a data display module 124. The signal amplification module 123 may be used to amplify the first signal to obtain the amplified first signal. The data display module 124 may be used to display the target data carried by the first signal.

[0083] It should be understood that the signal amplification of the first signal by the signal amplification module 123 is generally a distortion-free signal amplification process, and the specific method of signal amplification is not limited in the embodiment of the present application. In addition, the signal amplification module 123 and the data display module 124 can also be used as a module that has both signal amplification and data display, for example, an amplification display module or a signal display module, and the embodiment of the present application does not specifically limit this.

[0084] Based on the above manner, the signal receiving device 12 can amplify the first signal obtained by the signal analysis module 122 through the signal amplification module 123, so that the user on the side of the signal receiving device 12 can better obtain the target data in the first signal. In addition, the signal receiving device 12 can be used to display the target data carried by the first signal through the data display module 124, so that the user on the side of the signal receiving device 12 can obtain the target data more intuitively.

[0085] Exemplarily, taking the target data as audio data as an example, the data display module 124 may display the first signal carrying the audio data on the display screen, and implement audio playback of the audio data.

[0086] Furthermore, based on the same technical concept, the embodiment of the present application also provides a signal sending method of a signal sending device, which is used to reduce the cost required for communication while achieving longer wave communication (such as long wave communication or ultra-long wave communication). Figure 6 As shown, it is a schematic diagram of an implementation flow of a signal sending method provided in an embodiment of the present application, and the execution subject is as follows Figure 1 or Figure 2 Taking the signal sending device shown in the figure as an example, the specific implementation process of the method is as follows:

[0087] S601: Generate a first signal carrying target data.

[0088] The target data may be audio data, etc., and the wavelength corresponding to the first signal may be less than a set first wavelength threshold. For example, the first signal may be a shortwave signal, and the set first wavelength threshold may be 100 meters.

[0089] S602: Modulate a preset fundamental wave signal according to the first signal to obtain a second signal carrying target data.

[0090] The wavelength corresponding to the fundamental wave signal is greater than the set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal. Exemplarily, the preset fundamental wave signal can be a long-wave signal, and the second wavelength threshold can be 1000 meters.

[0091] In an optional implementation, when executing step S602, the signal sending device can adjust the first signal to a preset fundamental wave signal through a signal modulation module, thereby obtaining a second signal carrying target data. In this way, the signal sending device realizes the modulation of a higher frequency signal (i.e., the first signal) to a lower frequency signal (i.e., the fundamental wave signal), which makes it possible for subsequent longer wave (e.g., long wave or ultra-long wave, etc.) communications with large amounts of information.

[0092] S603: Perform electromagnetic conversion on the second signal to obtain a target signal, and send the target signal to a signal receiving device.

[0093] In an optional implementation, when executing step S603, the signal sending device can perform electromagnetic conversion on the second signal through a Halbach array composed of multiple electromagnetic conversion antennas in the signal sending module to obtain a target signal, and then send the target signal to the signal receiving device. In this way, the signal sending device forms a large magnetic gradient change on the obtained target signal, thereby completing a large amount of information communication with a longer wave (long wave or ultra-long wave, etc.).

[0094] In order to realize long-distance and longer-wave communication between the signal sending device and the signal receiving device, the signal sending device can also power amplify the second signal generated by the signal modulation module through the power amplification module, thereby sending the power-amplified second signal to the signal sending module, so that the signal sending module performs electromagnetic conversion on the second signal to obtain the target signal.

[0095] Based on the signal transmission method recorded in the above steps S601 to S603, a higher frequency signal is parasitically modulated on a lower frequency longer wave signal, forming a larger magnetic gradient change, thereby completing longer wave communication with a large amount of information. In this way, not only the advantages of the diffraction and strong penetration of longer waves are brought into play, but also the problem of being unable to transmit a large amount of information is overcome. In addition, while achieving longer wave communication (such as long wave communication or ultra-long wave communication), the cost required for communication is also reduced.

[0096] Furthermore, based on the same technical concept, the embodiment of the present application also provides a signal receiving method of a signal receiving device, which is used to accurately receive and analyze the magnetic signal (eg, target signal) sent by the signal sending device. Figure 7 As shown, it is a schematic diagram of an implementation flow of a signal receiving method provided in an embodiment of the present application, and the execution subject is as follows Figure 1 or Figure 5 Taking the signal receiving device shown in the figure as an example, the specific implementation process of the method is as follows:

[0097] S701: Receive a target signal sent by a signal sending device.

[0098] In an optional implementation, when executing step S701, the signal receiving device can receive the target signal sent by the signal sending device through a SQUID weak magnetic sensor with high magnetic gradient measurement sensitivity, thereby ensuring the smooth reception of the target signal sent by the signal sending device, that is, realizing longer-wave two-way communication.

[0099] S702: Perform magnetic gradient analysis processing and demodulation processing on the target signal in sequence to obtain a first signal carrying target data.

[0100] In an optional implementation, when executing step S702, the signal receiving module can perform magnetic gradient analysis on the target signal through the magnetoelectric conversion submodule in the signal analysis module to obtain a second signal carrying the target data; and demodulate the second signal through the signal demodulation submodule in the signal analysis module to obtain a first signal carrying the target data.

[0101] In order to better display the first signal carrying the target data, the signal receiving device can also amplify the first signal through the signal amplification module to obtain the amplified first signal, and then display the amplified first signal through the data display module, that is, the first signal carrying the target data.

[0102] Based on the signal receiving method described in steps S701 to S702, the signal receiving device can receive and accurately demodulate the longer wave signal sent by the signal sending device with high sensitivity, thereby realizing longer wave bidirectional communication.

[0103] Furthermore, it should be understood that what is disclosed above is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present application.

Claims

1. A signal sending device, characterized in that: include: Signal generation module, signal modulation module and signal sending module; wherein, The signal generating module is used to generate a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold; The signal modulation module is used to perform signal modulation on a preset fundamental wave signal according to the first signal to obtain a second signal carrying the target data; wherein the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal; The signal sending module is used to perform electromagnetic conversion on the second signal to obtain a target signal, and send the target signal to a signal receiving device.

2. The device according to claim 1, characterized in that The signal sending module includes a plurality of electromagnetic conversion antennas, and the plurality of electromagnetic conversion antennas are arranged according to a Halbach array.

3. The device according to claim 1 or 2, characterized in that The signal sending device further comprises a power amplification module connected to the signal modulation module and the signal sending module respectively, and the power amplification module is used to amplify the power of the second signal and send the power-amplified second signal to the signal sending module.

4. A signal receiving device, characterized in that: include: Signal receiving module and signal analyzing module; wherein, The signal receiving module is used to receive the target signal sent by the signal sending device, and send the target signal to the signal analyzing module; The signal analysis module is used to perform magnetic gradient analysis processing and demodulation processing on the target signal in sequence to obtain a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold.

5. The device according to claim 4, characterized in that The signal receiving module is a weak magnetic sensor, and the magnetic gradient measurement sensitivity of the weak magnetic sensor is greater than a set measurement sensitivity threshold.

6. The device according to claim 4, characterized in that The signal analysis module includes a magnetoelectric conversion submodule and a signal demodulation submodule; wherein, The magnetoelectric conversion submodule is used to perform magnetic gradient analysis on the target signal to obtain a second signal carrying the target data, and send the second signal to the signal demodulation submodule; the second signal is obtained by modulating a preset fundamental wave signal according to the first signal, the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal; The signal demodulation submodule is used to demodulate the second signal to obtain the first signal.

7. The device according to claim 4, 5 or 6, characterized in that The signal receiving device also includes a signal amplification module and / or a data display module; wherein, The signal amplification module is used to amplify the first signal to obtain the amplified first signal; The data display module is used to display the target data carried by the first signal.

8. A signal sending method, characterized in that: A signal sending device as claimed in any one of claims 1 to 3, comprising: Generate a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold; Performing signal modulation on a preset fundamental wave signal according to the first signal to obtain a second signal carrying the target data; wherein the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal; The second signal is electromagnetically converted to obtain a target signal, and the target signal is sent to a signal receiving device.

9. A signal receiving method, characterized in that: A signal receiving device as claimed in any one of claims 4 to 7, comprising: receiving a target signal sent by a signal sending device; The target signal is sequentially subjected to magnetic gradient analysis processing and demodulation processing to obtain a first signal carrying target data; the wavelength corresponding to the first signal is less than a set first wavelength threshold.

10. The method according to claim 9, characterized in that The step of sequentially performing magnetic gradient analysis processing and demodulation processing on the target signal to obtain a first signal carrying target data includes: Perform magnetic gradient analysis on the target signal to obtain a second signal carrying the target data, and demodulate the second signal to obtain the first signal; wherein the second signal is obtained by modulating a preset fundamental wave signal according to the first signal, the wavelength corresponding to the fundamental wave signal is greater than a set second wavelength threshold, the second wavelength threshold is greater than the first wavelength threshold, and the wavelength of the second signal is the same as the wavelength of the fundamental wave signal.

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