CN111010357B - Data ferrying method and device based on HDD hard disk - Google Patents

Abstract

The invention provides a data ferry method and a device based on a Hard Disk Drive (HDD), wherein the method comprises the following steps: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electric signal; the data transmitting terminal converts the amplified electric signal of the data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing the numbers 0 and 1 correspond to the frequency f respectively₁And f₂(ii) a Adding a lead code to the head of the physical frame for each frame of data; and the data receiving end receives the signal transmitted by the carrier wave, restores the signal and acquires the data. According to the scheme of the invention, the method is easy to realize, the data transmission speed is high, the transmission is safe, the data is easy to restore, and the risk of data leakage is reduced.

Description

A data transfer method and device based on HDD hard disk

technical field

The invention relates to the field of data transmission, in particular to a method and device for data ferrying based on a hard disk, and in particular to a method and device for data ferrying using HDD in a physically isolated computer environment.

Background technique

With the rapid development of computer technology, it has become a common operation to transfer data between two devices. For data transmission between the internal network and the external network, between the public network and the private network, it is especially necessary to ensure the security of the transmitted data. sex.

In some application scenarios, due to risks such as network attacks, data transmission between two devices or two networks over an IP network cannot meet the security requirements. In order to ensure data security, two devices or two networks can be physically isolated, and data is transmitted between the two physically isolated devices or two networks using a data ferry transmission method.

The traditional way of cross-network data exchange is CD-ROM. That is, first use the CD to record the information that needs to be transmitted, then use the robotic arm to switch to the other end of the network that needs to be exchanged, and then read the storage, thus completing a one-way transmission. This method is slow, has a high packet loss rate, and is difficult to guarantee security. If important data information is lost, it will seriously affect the normal development of the business. At the same time, because data copying is done manually, it is difficult to supervise the scope of the copied content, it is difficult to ensure the compliance of the data, and it is impossible to guarantee whether the data has been tampered with, and the copied data and the use process cannot be traced back. The responsible person could not be traced.

There have also been data ferry solutions using electromagnetic radiation, light waves, sound waves, and thermal principles. However, the existing data ferry solutions are complex to implement, including data packet loss, slow data transmission, difficult data restoration, and data leakage. risks, etc.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention proposes a method and device for data ferrying based on an HDD hard disk. The method and device are used to solve the complex implementation of data ferrying solutions in the prior art, such as data packet loss and data transmission speed. Slow, difficult to restore data, and technical problems with the risk of data leakage.

According to a first aspect of the present invention, a data transfer method based on an HDD hard disk is provided, the method comprising the following steps:

Step S101: Arrange the working environment, determine the data sending end and the data receiving end, both the data sending end and the data receiving end have an HDD hard disk, and a magnetic head chip is arranged on the magnetic head of the HDD hard disk, and the magnetic head chip is used to realize the transmission of electrical signals. enlarge;

Step S102: The data transmitting end converts the amplified electrical signal of the data to be sent into a binary signal, modulates the binary signal into a 2FSK signal, so that the binary signals representing digital 0 and 1 correspond to frequencies f ₁ and f ₂ respectively, using Carriers of two frequencies f ₁ and f ₂ transmit information; for each frame of data, a preamble is added to the header of the physical frame;

Step S103: The data receiving end uses software defined radio (SDR) to receive the signal transmitted by the carrier, restore the signal, and obtain the data sent by the data transmitting end.

Further, the data sending end executes the following methods, including:

Step S3001: the data sending end data sending program is started;

Step S3002: the HDD hard disk of the data sending end reads the data signal at high speed, amplifies the data signal, and converts the read amplified data signal into a binary format signal;

Step S3003: modulate the binary format signal into a 2FSK signal;

Step S3004: determine whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;

Step S3005: read the 2FSK signal bit by bit;

Step S3006: Determine whether the read data represented by the 2FSK signal is 0; if so, go to step S3007; if not, go to step S3008;

Step S3007: Adjust the read/write frequency of the HDD hard disk to f ₁ ; go to step S3010;

Step S3008: adjust the read/write frequency of the HDD hard disk to f ₂ ; go to step S3010;

Step S3009: add a preamble to the header of the current frame, send the current frame to the data receiving end, and realize the synchronization of the data sending end and the data receiving end; establish a new data frame; enter step S3005;

Step S3010: Determine whether the data of the data sending end has been sent; if so, go to Step S3011; if not, go to Step S3002;

Step S3011: Fill the vacant bits of the current data frame with 0, add a preamble to the header of the current data frame, and send the current data frame to the data receiving end.

Further, the first four bits of the data frame are the preamble, which is used to mark the timing of the data frame, and can realize the data synchronization between the data sending end and the data receiving end; the middle 12 bits of the data frame are the transmitted data information; the data frame Also set the CRC check code.

Further, the data receiving end performs the following methods, including:

Step S601: the data receiving end data receiving program is started;

Step S602: use software-defined radio (SDR) to receive the data frame, and obtain the signal transmitted by the carrier, wherein the preamble realizes the synchronization between the sender and the receiver;

Step S603: demodulate the received signal;

Step S604: Restore the demodulated signal, perform CRC check on the data, receive the data if the check is correct, and display the data terminal, otherwise give up.

According to a second aspect of the present invention, there is provided a data ferry device based on an HDD hard disk, the device comprising:

Configuration module: used for arranging the working environment and determining the data sending end and the data receiving end. Both the data sending end and the data receiving end have HDD hard disks. The magnetic head of the HDD hard disk is equipped with a magnetic head chip, which is used to realize electrical signal amplification;

Data sending module: used for converting the amplified electrical signal of the data to be sent into a binary signal by the data sending end, and modulating the binary signal into a 2FSK signal, so that the binary signals representing digital 0 and 1 correspond to frequencies f ₁ and 1 respectively. f ₂ , use two frequency carriers of f ₁ and f ₂ to transmit information; for each frame of data, add a preamble to the header of the physical frame;

Data receiving module: used by the data receiving end to receive the signal transmitted by the carrier using software defined radio (SDR), restore the signal, and obtain the data sent by the data transmitting end.

Further, the data sending module includes:

Startup submodule: used for starting the data sending program of the data sending end;

Format conversion submodule: used for the HDD hard disk of the data sending end to read the data signal at high speed, amplify the data signal, and convert the read amplified data signal into a binary format signal;

Modulation submodule: used to modulate the binary format signal into a 2FSK signal;

The first judgment sub-module: used to judge whether the current data frame data is full;

Read sub-module: used to read 2FSK signal bit by bit;

The second judging submodule: for judging whether the data represented by the read 2FSK signal is 0;

The first frequency modulation sub-module: used to adjust the read and write frequency of the HDD hard disk to f ₁ ;

The second frequency modulation sub-module: used to adjust the read and write frequency of the HDD hard disk to f ₂ ;

Preamble sub-module: used to add a preamble to the header of the current frame, send the current frame to the data receiving end, realize the synchronization of the data sending end and the data receiving end; establish a new data frame;

The third judging sub-module: used to judge whether the data of the data sending end has been sent;

Sending sub-module: fill the vacant bits of the current data frame with 0, add a preamble to the header of the current data frame, and send the current data frame to the data receiving end.

Further, the first four bits of the data frame are the preamble, which is used to mark the timing of the data frame, and can realize the data synchronization between the data sending end and the data receiving end; the middle 12 bits of the data frame are the transmitted data information; the data frame Also set the CRC check code.

Further, the data receiving module includes:

Startup submodule: used for being started by the data receiving program of the data receiving end;

Receiving sub-module: use software-defined radio (SDR) to receive data frames and obtain the signal transmitted by the carrier, in which the preamble realizes the synchronization between the sender and the receiver;

Demodulation sub-module: used to demodulate the received signal;

Restoration atomic module: used to restore the demodulated signal, perform CRC check on the data, receive the data if the check is correct, and display the data at the end, otherwise give up.

According to a third aspect of the present invention, a data ferry system based on an HDD hard disk is provided, comprising:

a processor for executing multiple instructions;

memory for storing multiple instructions;

Wherein, the plurality of instructions are used to be stored by the memory, and loaded by the processor to execute the aforementioned method for data transfer based on the HDD hard disk.

According to a fourth aspect of the present invention, a computer-readable storage medium is provided, wherein a plurality of instructions are stored in the storage medium; the plurality of instructions are used by a processor to load and execute the aforementioned HDD-based hard disk drive. Data Ferry Method.

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, and implement it according to the content of the description, the preferred embodiments of the present invention are described in detail below with the accompanying drawings.

Description of drawings

The accompanying drawings, which form a part of this disclosure, are provided to provide a further understanding of the present disclosure, and the present disclosure is provided with the following figures to illustrate. In the attached image:

1 is a flowchart of a method for data ferrying based on an HDD hard disk according to an embodiment of the present invention;

Fig. 2 is a working environment scene diagram of the arrangement of an embodiment of the present invention;

3 is a flowchart of a method for executing a data sending end according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a modulation method according to an embodiment of the present invention;

5 is a schematic diagram of a data frame format according to an embodiment of the present invention;

6 is a flowchart of a method for executing a data receiving end according to an embodiment of the present invention;

FIG. 7 is a structural block diagram of a data ferry device based on an HDD hard disk according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

First, a flow chart of data transfer based on an HDD hard disk according to an embodiment of the present invention will be described with reference to FIG. 1 . As shown in Figure 1, when applied to a physically isolated computer environment, it includes the following steps:

Step S101: Arrange the working environment, determine the data sending end and the data receiving end, both the data sending end and the data receiving end have an HDD hard disk, and a magnetic head chip is arranged on the magnetic head of the HDD hard disk, and the magnetic head chip is used to realize the transmission of electrical signals. enlarge;

Step S102: The data transmitting end converts the amplified electrical signal of the data to be sent into a binary signal, modulates the binary signal into a 2FSK signal, so that the binary signals representing digital 0 and 1 correspond to frequencies f ₁ and f ₂ respectively, using Carriers of two frequencies f ₁ and f ₂ transmit information; for each frame of data, a preamble is added to the header of the physical frame;

Step S103: The data receiving end uses software defined radio (SDR) to receive the signal transmitted by the carrier, restore the signal, and obtain the data sent by the data transmitting end.

The following describes a working environment scene diagram of an arrangement of an embodiment of the present invention with reference to FIG. 2 . as shown in picture 2:

Under the control of the application program, the data sending end reads and writes the hard disk at high speed through the hard disk, generates radiation, and conducts digital modulation of 2FSK on the electrical signal. The data receiving end uses the SDR device to receive the signal, and then demodulates and restores the signal, and displays the data to be sent by the data transmitting end on the system terminal of the data receiving end.

Step S101: Arrange the working environment, determine the data sending end and the data receiving end, both the data sending end and the data receiving end have an HDD hard disk, and a magnetic head chip is arranged on the magnetic head of the HDD hard disk, and the magnetic head chip is used to realize the transmission of electrical signals. enlarge;

Specifically, the data of the hard disk is stored on the disk full of magnetic substances, and the process of writing data in the HDD hard disk is the process of changing the magnetic pole of the magnetic material of the HDD disk through the induction head; the reading data of the HDD hard disk is the resistance value of the MR head. In the process of changing the induction signal, the magnetic head plays a key role in the reading and writing process of the HDD hard disk. A magnetic head chip is arranged on the magnetic head of the HDD hard disk, and the magnetic head chip is used to amplify the electrical signals generated by the HDD hard disk in the process of reading and writing.

Step S102: The data transmitting end converts the amplified electrical signal of the data to be sent into a binary signal, modulates the binary signal into a 2FSK signal, so that the binary signals representing digital 0 and 1 correspond to frequencies f ₁ and f ₂ respectively, using Carriers of two frequencies f ₁ and f ₂ transmit information; for each frame of data, a preamble is added to the header of the physical frame;

The following describes the execution process of the data sending end of the present invention with reference to FIG. 3 . FIG. 3 is a flowchart of an implementation method of the data sending end of the present invention, as shown in FIG. 3 , including:

Step S3001: the data sending end data sending program is started;

Step S3002: the HDD hard disk of the data sending end reads the data signal at high speed, amplifies the data signal, and converts the read amplified data signal into a binary format signal;

Step S3003: modulate the binary format signal into a 2FSK signal;

Step S3004: determine whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;

Step S3005: read the 2FSK signal bit by bit;

Step S3006: Determine whether the read data represented by the 2FSK signal is 0; if so, go to step S3007; if not, go to step S3008;

Step S3007: Adjust the read/write frequency of the HDD hard disk to f ₁ ; go to step S3010;

Step S3008: adjust the read/write frequency of the HDD hard disk to f ₂ ; go to step S3010;

Step S3009: add a preamble to the header of the current frame, send the current frame to the data receiving end, and realize the synchronization of the data sending end and the data receiving end; establish a new data frame; enter step S3005;

Step S3010: Determine whether the data of the data sending end has been sent; if so, go to Step S3011; if not, go to Step S3002;

Step S3011: Fill the vacant bits of the current data frame with 0, add a preamble to the header of the current data frame, and send the current data frame to the data receiving end.

Further, the step S3003: modulate the binary format signal into a 2FSK signal;

4 is a schematic diagram illustrating a modulation method according to an embodiment of the present invention. As shown in Figure 4:

The data sending end converts the amplified electrical signal of the data to be sent into a binary signal that can be recognized by the computer. The signal needs to be modulated. The 2FSK modulation method is used. The modulation formula is:

0 and 1 are respectively corresponding to two different frequencies f ₁ and f ₂ , and digital information is transmitted by using the carrier waves of the two frequencies of f ₁ and f ₂ .

Further, the step S3009: adding a preamble to the header of the current frame, sending the current frame to the data receiving end, and realizing the synchronization of the data sending end and the data receiving end; establishing a new data frame; entering step S3005;

A schematic diagram of a data frame format according to an embodiment of the present invention is described with reference to FIG. 5 , as shown in FIG. 5 :

The first four bits of the data frame are the preamble, which is used to mark the timing of the data frame, and can realize the data synchronization between the data sending end and the data receiving end. The middle 12 bits of the data frame are the transmitted data information, and the data frame is also set with a CRC check code.

Step S103: The data receiving end uses software defined radio (SDR) to receive the signal transmitted by the carrier, restore the signal, and obtain the data sent by the data transmitting end.

The method performed by the data receiving end is described with reference to FIG. 6. FIG. 6 is a flowchart of the execution method of the data receiving end according to an embodiment of the present invention, as shown in FIG. 6, including:

Step S601: the data receiving end data receiving program is started;

Step S602: use software-defined radio (SDR) to receive the data frame, and obtain the signal transmitted by the carrier, wherein the preamble realizes the synchronization between the sender and the receiver;

Step S603: demodulate the received signal;

Step S604: Restore the demodulated signal, perform CRC check on the data, receive the data if the check is correct, and display the data terminal, otherwise give up.

The embodiment of the present invention further provides a data ferry device based on an HDD hard disk. As shown in FIG. 7 , the device includes:

The device includes:

Configuration module: used for arranging the working environment and determining the data sending end and the data receiving end. Both the data sending end and the data receiving end have HDD hard disks. The magnetic head of the HDD hard disk is equipped with a magnetic head chip, which is used to realize electrical signal amplification;

Data sending module: used for converting the amplified electrical signal of the data to be sent into a binary signal by the data sending end, and modulating the binary signal into a 2FSK signal, so that the binary signals representing digital 0 and 1 correspond to frequencies f ₁ and 1 respectively. f ₂ , use two frequency carriers of f ₁ and f ₂ to transmit information; for each frame of data, add a preamble to the header of the physical frame;

Data receiving module: used by the data receiving end to receive the signal transmitted by the carrier using software defined radio (SDR), restore the signal, and obtain the data sent by the data transmitting end.

Further, the data sending module includes:

Startup submodule: used for starting the data sending program of the data sending end;

Format conversion submodule: used for the HDD hard disk of the data sending end to read the data signal at high speed, amplify the data signal, and convert the read amplified data signal into a binary format signal;

Modulation submodule: used to modulate the binary format signal into a 2FSK signal;

The first judgment sub-module: used to judge whether the current data frame data is full;

Read sub-module: used to read 2FSK signal bit by bit;

The second judging submodule: for judging whether the data represented by the read 2FSK signal is 0;

The first frequency modulation sub-module: used to adjust the read and write frequency of the HDD hard disk to f ₁ ;

The second frequency modulation sub-module: used to adjust the read and write frequency of the HDD hard disk to f ₂ ;

Preamble sub-module: used to add a preamble to the header of the current frame, send the current frame to the data receiving end, realize the synchronization of the data sending end and the data receiving end; establish a new data frame;

The third judging sub-module: used to judge whether the data of the data sending end has been sent;

Sending sub-module: fill the vacant bits of the current data frame with 0, add a preamble to the header of the current data frame, and send the current data frame to the data receiving end.

Further, the first four bits of the data frame are the preamble, which is used to mark the timing of the data frame, and can realize the data synchronization between the data sending end and the data receiving end; the middle 12 bits of the data frame are the transmitted data information; the data frame Also set the CRC check code.

Further, the data receiving module includes:

Startup submodule: used for being started by the data receiving program of the data receiving end;

Receiving sub-module: use software-defined radio (SDR) to receive data frames and obtain the signal transmitted by the carrier, in which the preamble realizes the synchronization between the sender and the receiver;

Demodulation sub-module: used to demodulate the received signal;

Restoration atomic module: used to restore the demodulated signal, perform CRC check on the data, receive the data if the check is correct, and display the data at the end, otherwise give up.

The embodiment of the present invention further provides a system for data ferrying based on an HDD hard disk, including:

a processor for executing multiple instructions;

memory for storing multiple instructions;

Wherein, the plurality of instructions are used to be stored by the memory and loaded by the processor to execute the aforementioned method for data transfer based on an HDD hard disk.

An embodiment of the present invention further provides a computer-readable storage medium, where multiple instructions are stored in the storage medium; the multiple instructions are used by a processor to load and execute the aforementioned data based on the HDD hard disk method of ferrying.

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the several embodiments provided by the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined. Either it can be integrated into another system, or some features can be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, and include several instructions to make a computer device (which can be a personal computer, a physical machine server, or a network cloud server, etc., need to install Windows or Windows Server operating system) to execute each of the present invention. Some steps of the method described in the examples. The aforementioned storage medium includes: U disk, removable hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the present invention. within the scope of the technical solution of the invention.

Claims (10)

1. A data ferry method based on HDD hard disk is applied to physically isolated computer environment, and is characterized by comprising the following steps:

step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electric signal;

step S102: the data transmitting terminal converts the amplified electric signal of the data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing the numbers 0 and 1 respectively correspond to the frequency f₁And f₂Using f₁And f₂The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;

step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.

2. The HDD hard disk-based data ferry method according to claim 1, wherein the data sending end executes a method including:

step S3001: starting a data sending program of the data sending end;

step S3002: the HDD hard disk of the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;

step S3003: modulating the binary format signal into a 2FSK signal;

step S3004: judging whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;

step S3005: bit-wise reading a 2FSK signal;

step S3006: judging whether the read data represented by the 2FSK signal is 0; if yes, go to step S3007; if not, go to step S3008;

step S3007: adjusting the read-write frequency of HDD hard disk to f₁(ii) a The process advances to step S3010;

step S3008: adjusting the read-write frequency of HDD hard disk to f₂(ii) a The process advances to step S3010;

step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;

step S3010: judging whether the data sending end finishes sending the data; if yes, go to step S3011; if not, go to step S3002;

step S3011: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.

3. The HDD hard disk-based data ferry method according to claim 1, wherein the first four bits of the data frame are preambles for marking a timing sequence of the data frame, so as to achieve data synchronization between the data sending end and the data receiving end; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.

4. The HDD hard disk-based data ferry method of claim 1, wherein the data receiving end performs the following method, comprising:

step S601: starting a data receiving program of the data receiving terminal;

step S602: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;

step S603: demodulating the received signal;

step S604: and restoring the demodulated signal, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, displaying the data at the data end, and giving up if not.

5. A data ferry device based on a HDD hard disk, which is applied to a physically isolated computer environment, and is characterized by comprising:

a configuration module: the data sending end and the data receiving end are both provided with HDD hard disks, and magnetic head chips are configured on magnetic heads of the HDD hard disks and used for realizing the amplification of electric signals;

a data sending module: for converting the amplified electrical signal of the data to be transmitted into a binary signal by the data transmitting terminal, modulating the binary signal into a 2FSK signal, so that the binary signals representing the digits 0 and 1 correspond to the frequency f, respectively₁And f₂Using f₁And f₂The carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;

a data receiving module: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.

6. The HDD hard disk-based data ferry device of claim 5, wherein the data transmission module comprises:

a promoter module: the data sending program is used for starting the data sending program of the data sending terminal;

a format conversion submodule: the HDD hard disk used for the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;

a modulation submodule: for modulating the binary format signal into a 2FSK signal;

a first judgment sub-module: the data processing device is used for judging whether the current data frame data is full;

reading the sub-modules: for bit-wise reading of the 2FSK signal;

a second judgment sub-module: the data processing device is used for judging whether the data represented by the read 2FSK signal is 0;

a first frequency modulation submodule: for adjusting the read-write frequency of HDD hard disk to f₁；

A second frequency modulation submodule: for adjusting the read-write frequency of HDD hard disk to f₂；

A preamble submodule: the data transmitting end is used for transmitting the current frame to the data receiving end by adding a lead code at the head of the current frame so as to realize the synchronization of the data transmitting end and the data receiving end; establishing a new data frame;

a third judgment sub-module: used for judging whether the data sending end finishes sending data;

a sending submodule: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.

7. The HDD hard disk-based data ferry device of claim 5, wherein the first four bits of the data frame are preamble codes for marking the timing sequence of the data frame, so as to achieve data synchronization between the data sending end and the data receiving end; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.

8. The HDD hard disk-based data ferry device of claim 5, wherein the data receiving module comprises:

a promoter module: for being started by the data receiving end data receiving program;

a receiving submodule: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;

a demodulation submodule: for demodulating the received signal;

and (3) restoring a submodule: and the CRC check module is used for restoring the demodulated signals, performing CRC check on the data, receiving the data if the check is correct, and displaying the data at the data end, otherwise, giving up the data.

9. A system for data ferry based on HDD hard disks, comprising:

a processor for executing a plurality of instructions;

a memory to store a plurality of instructions;

wherein the plurality of instructions are for being stored by the memory and loaded by the processor and performing the method of HDD hard disk based data ferry according to any of claims 1-4.

10. A computer-readable storage medium having stored therein a plurality of instructions; the plurality of instructions for loading and executing by a processor the method of HDD hard disk based data ferry according to any of claims 1-4.

Images