CN114428981A - Data protection system, data protection method, device and medium - Google Patents

Abstract

The present application discloses a data protection system, a data protection method, a device and a medium, including: a hard disk power supply circuit, a switch device, a detection circuit and a control unit, the control unit is connected to the detection circuit and the switch device. When the short-circuit signal is received, the control switch device is turned on, and the detection circuit detects whether there is a short-circuit event caused by factors such as water intrusion of the hard disk and handles it in time to improve the security of the hard disk and prevent data loss. The first end of the switching device is connected to the first end of the energy storage capacitor of the hard disk power supply circuit, and the second end of the switching device and the second end of the energy storage capacitor are both grounded, which are used for conduction under the control of the control unit to make the energy storage The capacitor discharges to prevent the electric energy stored inside the energy storage resistor from damaging the hard disk. It can be seen that the solution provided by the present application can release the electric energy in the energy storage capacitor in time after the hard disk enters water, so as to prevent the hard disk storage chip and the control unit from being damaged, thereby protecting the hard disk data.

Description

A data protection system and data protection method, device and medium

technical field

The present application relates to the field of storage, and in particular, to a hard disk protection system and a hard disk protection method, device, and medium.

Background technique

In terminal equipment such as servers, data is generally stored through hard disks. Figure 1 is a structural diagram of a commonly used hard disk power supply circuit. As shown in Figure 1, the power management unit controls the DC power supply and energy storage capacitors as the storage chip and control unit of the hard disk. powered by. At present, the commonly used hard disk protection method is to cut off the DC power supply circuit of the hard disk after the hard disk enters the water, but the energy stored in the energy storage capacitor will damage the memory chip and control unit of the hard disk, resulting in data loss.

It can be seen that how to propose a new data protection method to prevent the hard disk from losing data after water ingress or damage is an urgent problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of this application is to provide a data protection system, a data protection method, a device and a medium, so as to prevent the loss of data in the hard disk after the hard disk is flooded or damaged.

In order to solve the above technical problems, the present application provides a data protection system, including:

Hard disk power supply circuit 1, detection circuit 2 and discharge circuit 3;

The first end of the discharge circuit 3 is connected to the first end of the energy storage capacitor of the hard disk power supply circuit 1, and the second end of the discharge circuit 3 and the second end of the energy storage capacitor are both grounded;

The detection circuit 2 is connected to the discharge circuit 3, and when a short-circuit signal generated by the grounding of the detection terminal of the detection circuit 2 is detected, the discharge circuit 3 is controlled to be turned on to discharge the storage capacitor.

Preferably, the detection circuit 2 includes a switch device and a detection coil 5 connected to the switch device;

The detection coil 5 is arranged at the border of the circuit board 4 of the hard disk. When the detection coil 5 is grounded due to the short circuit of the hard disk, the short circuit signal is sent to the control unit.

Preferably, the switching device is a MOS tube;

The control unit is connected to the control end of the MOS transistor.

Preferably, the detection circuit 2 further comprises: a current limiting resistor;

The first end of the current limiting resistor is connected to the second end of the switching device, and the second end of the current limiting resistor is grounded.

Preferably, the detection circuit 2 further comprises: a boosting resistor;

The first end of the boost resistor is connected to the first end of the switching device, and the second end of the boost resistor is connected to the detection circuit 2 .

In order to solve the above technical problems, the present application also provides a data protection method, including:

Determine whether the short-circuit signal sent by the detection circuit 2 is obtained;

If the short-circuit signal is obtained, the switching device is controlled to be turned on to discharge the energy storage capacitor.

Preferably, the controlling the switching device to be turned on to discharge the energy storage capacitor comprises:

Determine whether the hard disk power supply circuit 1 stops power supply;

If the power supply is stopped, if the short-circuit signal is obtained, the switching device is controlled to be turned on, thereby discharging the energy storage capacitor.

In order to solve the above technical problems, the present application also provides a data protection device, which includes:

The judgment module is used for judging whether to obtain the short-circuit signal sent by the detection circuit 2;

The control module is configured to control the discharge of the energy storage resistor if the short circuit signal is obtained.

In order to solve the above technical problems, the present application also provides a data protection device, comprising a memory for storing a computer program;

The processor is configured to implement the steps of the data protection method when executing the computer program.

To solve the above technical problems, the present application also provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program implements the steps of the data protection method when executed by a processor.

The data protection system provided by the present application includes: a hard disk power supply circuit 1, a switching device, a detection circuit 2 and a control unit. The control unit is connected to the detection circuit 2 and the switching device. When the short-circuit signal sent by the detection circuit 2 is acquired, the control unit controls The switching device is turned on, and the detection circuit 2 detects whether there is a short circuit event caused by factors such as water ingress of the hard disk and handles it in time, thereby improving the security of the hard disk and preventing data loss. The first end of the switching device is connected to the first end of the energy storage capacitor of the hard disk power supply circuit 1, and the second end of the switching device and the second end of the energy storage capacitor are both grounded, which are used for conduction under the control of the control unit to make the storage capacitor. Capacitor discharge can prevent the electric energy stored in the energy storage resistor from damaging the hard disk. It can be seen that the solution provided by the present application can release the electric energy in the energy storage capacitor in time after the hard disk enters water, so as to prevent the hard disk storage chip and the control unit from being damaged, thereby protecting the hard disk data.

In addition, the present application also provides a data protection method, device and medium, which correspond to the above data protection system and have the same effects as above.

Description of drawings

In order to describe the embodiments of the present application more clearly, the following will briefly introduce the drawings that are used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, which are not relevant to ordinary skills in the art. As far as personnel are concerned, other drawings can also be obtained from these drawings on the premise of no creative work.

Fig. 1 is the structure diagram of a kind of commonly used hard disk power supply circuit;

FIG. 2 is a structural diagram of a data protection system provided by an embodiment of the present application;

3 is a schematic diagram of the arrangement of a detection coil provided by an embodiment of the present application;

4 is a flowchart of a data protection method provided by an embodiment of the present application;

FIG. 5 is a structural diagram of a data protection device provided by an embodiment of the present application;

FIG. 6 is a structural diagram of another data protection device provided by an embodiment of the present application;

Reference numerals are as follows: 1 is a hard disk power supply circuit, 2 is a detection circuit, 3 is a discharge circuit, 4 is a circuit board, 5 is a detection coil, and 6 is a grounding coil.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the protection scope of the present application.

The core of this application is to provide a data protection system and data protection method, device and medium.

In order to make those skilled in the art better understand the solution of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

In the application scenario of the hard disk, the hard disk is mainly used to store data. In order to speed up the data reading and writing speed, a buffer is usually set inside the hard disk. When the hard disk is powered off, it needs to supply power through the internal circuit to write the data in the buffer into the memory chip. middle. When the hard disk enters the water, it is easy to cause the internal power supply circuit to short circuit and cause the hard disk to be damaged, resulting in the loss or damage of the data in the hard disk. In the solution provided by the present application, the power supply circuit is detected by the detection circuit 2, and when a short circuit is detected in the power supply circuit, the discharge circuit 3 is controlled to be turned on to discharge the energy storage capacitor. Prevent the hard disk from being damaged due to discharge after the storage capacitor is short-circuited.

FIG. 2 is a structural diagram of a data protection system provided by an embodiment of the present application. As shown in FIG. 2 , the data protection system provided by the present application includes:

Hard disk power supply circuit 1, detection circuit 2 and discharge circuit 3;

The first end of the discharge circuit 3 is connected to the first end of the energy storage capacitor of the hard disk power supply circuit 1, and the second end of the discharge circuit 3 and the second end of the energy storage capacitor are both grounded;

The detection circuit 2 is connected to the discharge circuit 3, and when a short-circuit signal generated by the grounding of the detection end of the detection circuit 2 is detected, the discharge circuit 3 is controlled to be turned on to discharge the storage capacitor.

In a specific implementation, the hard disk power supply circuit 1 is connected to a power supply for supplying power to the hard disk. The power supply circuit includes: an energy storage capacitor, a power management integrated circuit chip (PMIC), an overcurrent protection switch, a cache controller, etc. device. Among them, one end of the overcurrent protection switch is connected to the external power supply, and the other end is connected to the PMIC for overcurrent protection; the energy storage capacitor is connected to the power management chip, charging when the external power supply is normal, and discharging when the external power supply is disconnected for cache control The PMIC provides electrical signals to prevent data loss in the buffer area; PMIC is connected to the buffer controller to supply power to the buffer controller and the buffer area. When the external power supply is normal, it supplies power to the subsequent circuit through the external power supply, and when the external power supply is disconnected When the energy storage capacitor is controlled to supply power to the subsequent circuit.

It can be understood that the detection circuit 2 can be an electronic device such as a current sensor or a voltage sensor, which is used to detect whether the power supply circuit in the hard disk is short-circuited, and controls the discharge circuit 3 to conduct when the detection circuit 2 detects a short-circuit signal. It can be understood that the task of judging whether there is a short-circuit signal can be realized by the control unit that comes with the detection circuit 2, or it can be realized by an external control unit, which is not limited here; at the same time, the detection circuit 2 can also be a simple coil structure, When it is detected that the coil is grounded, it indicates that the internal power supply circuit of the hard disk is short-circuited due to water ingress.

In the specific implementation, the energy storage capacitor device is mainly composed of a super capacitor bank, a bidirectional DC/DC converter and a corresponding control circuit. topology and control strategy. Commonly used energy storage capacitors include electric double layer capacitors and Farad capacitors.

It can be understood that the on and off of the discharge circuit 3 can be controlled by the combination of the control unit and the switching device, and the on and off of the discharge circuit 3 can also be controlled only by the switch tube, which is not limited here.

Further, when it is detected that the internal circuit is short-circuited due to water entering the hard disk, in addition to controlling the discharge circuit 3 to be turned on to discharge the energy storage capacitor, it is also necessary to disconnect the hard disk from the external power supply in time to protect the hard disk from being damaged. , so as to achieve the purpose of data protection.

This embodiment provides a data protection system, which includes: a hard disk power supply circuit, a switching device, a detection circuit and a control unit, the control unit is connected to both the detection circuit and the switching device, and when a short-circuit signal sent by the detection circuit is acquired , Control the switching device to conduct, through the detection circuit to detect whether there is a short circuit event caused by factors such as hard disk water ingress and deal with it in time, improve the security of the hard disk and prevent data loss. The first end of the switching device is connected to the first end of the energy storage capacitor of the hard disk power supply circuit, and the second end of the switching device and the second end of the energy storage capacitor are both grounded, which are used for conduction under the control of the control unit to make the energy storage The capacitor discharges to prevent the electric energy stored inside the energy storage resistor from damaging the hard disk. It can be seen that the solution provided by the present application can release the electric energy in the energy storage capacitor in time after the hard disk enters water, so as to prevent the hard disk storage chip and the control unit from being damaged, thereby protecting the hard disk data.

In a specific implementation, the detection circuit 2 can be an electronic device such as a current sensor, which judges whether the hard disk has entered water by detecting leakage current; it can also be a detection coil 5 arranged on the edge of the hard disk PCB board. Considering the cost and detection accuracy of the two schemes, the second scheme is selected in this embodiment.

On the basis of the above embodiment, the detection circuit 2 includes a switching device and a detection coil 5 connected to the switching device;

The detection coil 5 is arranged at the frame of the circuit board 4 of the hard disk. When the detection coil 5 is grounded due to a short circuit of the hard disk, a short circuit signal is generated.

FIG. 3 is a schematic diagram of the arrangement of a detection coil 5 provided by an embodiment of the application. As shown in FIG. 3 , the detection coil 5 is arranged at the frame of the circuit board 4 of the hard disk, and the edges of both sides of the circuit board 4 are evenly arranged with detection Coil 5, at the same time, the area adjacent to the detection coil 5 in the hard disk case is evenly equipped with grounded coils. When water enters the hard disk case, the detection coil 5 is grounded, and the detection circuit 2 sends a short-circuit signal to the control unit to control the energy storage. Capacitor discharge.

Further, the detection coil 5 is connected to the control terminal of the switching device, and when the detection coil 5 is grounded, the switching device is controlled to be turned on to discharge the energy storage capacitor.

It can be understood that the detection coil 5 used in this embodiment is a coil with exposed copper wires. In order to improve the detection sensitivity, the detection coil 5 and the grounding coil 6 in the hard disk enclosure can be added without affecting the normal operation of the hard disk. quantity.

In this embodiment, the detection coil arranged at the circuit board frame of the hard disk detects whether the internal circuit of the hard disk is short-circuited to determine whether the hard disk has entered water, which increases the detection accuracy of the hard disk water ingress, and can also reduce the system cost.

In a specific implementation, the switch device may be an electronic module with a processing chip, or a switch tube.

In a specific implementation, the switch tube includes a MOS tube and a triode, wherein the triode is mostly used in a current driving circuit, and the MOS tube is a voltage control device, which is often used in a voltage driving circuit. The MOS tube has the advantages of low power consumption and high output impedance, and has good temperature characteristics and noise characteristics, which can make the circuit more stable. In the specific implementation, the MOS tube has a much higher upper limit frequency than the triode, which is more safe and stable, so the MOS tube is usually selected as the switching device.

On the basis of the above embodiment, the switching device is a MOS transistor Q1; the detection coil 5 is connected to the control end of the MOS transistor Q1. When the detection coil 5 is short-circuited to the ground, the control terminal voltage of the MOS transistor Q1 is 0, the MOS transistor Q1 is turned on, and the energy storage capacitor begins to discharge.

In this embodiment, the MOS tube is used to control the discharge of the energy storage capacitor, thereby reducing the hardware cost of the data protection system, and at the same time reducing the power consumption of the circuit, making the circuit more stable and reliable.

It is understandable that due to the excessively large current when the energy storage capacitor discharges, the hard disk may be damaged.

In order to solve this problem, on the basis of the above embodiment, the detection circuit 2 further includes: a current limiting resistor R2;

The first end of the current limiting resistor R2 is connected to the second end of the switching device, and the second end of the current limiting resistor R2 is grounded.

In this embodiment, by inserting a current limiting resistor into the detection circuit, it protects the internal power supply circuit of the hard disk, and at the same time, it can also prevent the energy storage capacitor from being broken down, thereby improving the safety and reliability of the internal power supply circuit of the hard disk .

In a specific implementation, since the detection coil 5 is grounded after the hard disk enters the water, the current in the detection circuit 2 will be too large, and the internal power supply circuit of the hard disk will be damaged.

On the basis of the above embodiment, the detection circuit 2 further includes: a boosting resistor R1;

The first end of the boosting resistor R1 is connected to the first end of the switching device, and the second end of the boosting resistor R1 is connected to the detection circuit 2 .

It can be understood that the second end of the boosting resistor R1 is also connected to the control end of the MOS transistor Q1 for pulling up the voltage of the control end of the MOS transistor Q1.

In the specific implementation process, when the hard disk is working normally, the boost resistor R1 is pulled up, and the MOS transistor Q1 is turned off; when the hard disk enters water, the detection coil 5 is grounded, the MOS transistor Q1 is turned on, and the energy storage capacitor passes through the current limiting resistor R2. The circuit in which it is located is discharged.

In this embodiment, by inserting a boost resistor into the circuit, the stability and reliability of the internal power supply circuit and the discharge circuit of the hard disk are improved.

FIG. 4 is a flowchart of a data protection method provided by an embodiment of the present application. As shown in FIG. 4 , the present embodiment provides a data protection method, which is applied to the above-mentioned data protection system, and the method includes:

S10: Determine whether the short-circuit signal sent by the detection circuit 2 is acquired.

S11: If the short-circuit signal is obtained, the switching device is controlled to be turned on to discharge the energy storage capacitor.

It can be understood that the detection circuit 2 may be a circuit for detecting a short circuit through an electronic device such as a current sensor, or a detection coil 5 arranged on the hard disk circuit board 4 , which is not limited here.

In a specific implementation, the control unit that executes the method may be a separate control unit, or may be a buffer control unit of a hard disk, and the latter solution can save hardware costs.

Since the embodiments of the system part correspond to the embodiments of the method part, for the embodiments of the method part, please refer to the description of the embodiments of the system part, which will not be repeated here.

This embodiment provides a data protection method. The method includes: a hard disk power supply circuit 1, a switch device, a detection circuit 2, and a control unit. The control unit is connected to the detection circuit 2 and the switch device. When the short-circuit signal is received, the control switch device is turned on, and the detection circuit 2 detects whether there is a short-circuit event caused by factors such as water ingress of the hard disk and handles it in time to improve the security of the hard disk and prevent data loss. The first end of the switching device is connected to the first end of the energy storage capacitor of the hard disk power supply circuit 1, and the second end of the switching device and the second end of the energy storage capacitor are both grounded, which are used for conduction under the control of the control unit to make the storage capacitor. Capacitor discharge can prevent the electric energy stored in the energy storage resistor from damaging the hard disk. It can be seen that the solution provided by the present application can release the electric energy in the energy storage capacitor in time after the hard disk enters water, so as to prevent the hard disk storage chip and the control unit from being damaged, thereby protecting the hard disk data.

In the specific implementation, when it is detected that the internal circuit is short-circuited due to the water ingress of the hard disk, in addition to controlling the discharge circuit 3 to be turned on to discharge the energy storage capacitor, it is also necessary to disconnect the hard disk from the external power supply in time to protect the hard disk from being damaged. be damaged, so as to achieve the purpose of protecting data.

On the basis of the above embodiment, controlling the switching device to be turned on to discharge the energy storage capacitor includes:

Determine whether the hard disk power supply circuit 1 stops power supply;

If the power supply is stopped, if a short-circuit signal is obtained, the switching device is controlled to be turned on, thereby discharging the energy storage capacitor.

In this embodiment, after it is determined that the power supply circuit of the hard disk stops supplying power, the energy storage capacitor is controlled to discharge, so as to prevent the external power supply of the hard disk from being grounded due to the discharge of the energy storage capacitor, thereby improving the security of the system.

In the above embodiments, the data protection method is described in detail, and the present application also provides the corresponding embodiments of the data protection device. It should be noted that this application describes the embodiments of the device part from two perspectives, one is based on the perspective of functional modules, and the other is based on the perspective of hardware.

Since the embodiment of the apparatus part corresponds to the embodiment of the method part, for the embodiment of the apparatus part, please refer to the description of the embodiment of the method part, which will not be repeated here.

FIG. 5 is a structural diagram of a data protection device provided by an embodiment of the application. As shown in FIG. 5 , the device includes:

The judgment module 10 is used for judging whether to obtain the short-circuit signal sent by the detection circuit 2;

The control module 11 is configured to control the discharge of the energy storage resistor if the short circuit signal is obtained.

The present application provides a data protection device, which is applied to the above data protection system. The system includes: a hard disk power supply circuit, a switching device, a detection circuit and a control unit. The control unit is connected to the detection circuit and the switching device. When the detection circuit is acquired When the short-circuit signal is sent, the control switch device is turned on, and the detection circuit detects whether there is a short-circuit event caused by factors such as hard disk water ingress and handles it in time to improve the security of the hard disk and prevent data loss. The first end of the switching device is connected to the first end of the energy storage capacitor of the hard disk power supply circuit, and the second end of the switching device and the second end of the energy storage capacitor are both grounded, which are used for conduction under the control of the control unit to make the energy storage The capacitor discharges to prevent the electric energy stored inside the energy storage resistor from damaging the hard disk. It can be seen that the solution provided by the present application can release the electric energy in the energy storage capacitor in time after the hard disk enters water, so as to prevent the hard disk storage chip and the control unit from being damaged, thereby protecting the hard disk data.

FIG. 6 is a structural diagram of another data protection device provided by an embodiment of the application. As shown in FIG. 6 , the data protection device includes: a memory 20 for storing a computer program;

The processor 21 is configured to implement the steps of the method for obtaining a short-circuit signal according to the above embodiment when executing the computer program.

The terminal device to which the hard disk provided in this embodiment is applied may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, or a desktop computer.

The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 21 may be implemented in at least one hardware form among digital signal processing (Digital Signal Processing, DSP), field-programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). . The processor 21 may also include a main processor and a coprocessor. The main processor is a processor used to process data in the wake-up state, also called a central processing unit (CPU); A low-power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with a graphics processor (Graphics Processing Unit, GPU), and the GPU is responsible for rendering and drawing the content that needs to be displayed on the display screen. In some embodiments, the processor 21 may further include an artificial intelligence (Artificial Intelligence, AI) processor for processing computing operations related to machine learning.

Memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash storage devices. In this embodiment, the memory 20 is at least used to store the following computer program 201 , where, after the computer program is loaded and executed by the processor 21 , the relevant steps of the data protection device method disclosed in any of the foregoing embodiments can be implemented. In addition, the resources stored in the memory 20 may also include an operating system 202, data 203, etc., and the storage mode may be short-term storage or permanent storage. The operating system 202 may include Windows, Unix, Linux, and the like. Data 203 may include, but is not limited to, short circuit signals, and the like.

In some embodiments, the data protection device may further include a display screen 22 , an input/output interface 23 , a communication interface 24 , a power supply 25 and a communication bus 26 .

Those skilled in the art can understand that the structure shown in FIG. 6 does not constitute a limitation on the data protection device, and may include more or less components than those shown.

The data protection device provided by the embodiment of the present application includes a memory and a processor, and the processor can implement the following method when executing a program stored in the memory:

Determine whether the short-circuit signal sent by the detection circuit is obtained;

If the short-circuit signal is obtained, the switching device is controlled to be turned on to discharge the energy storage capacitor.

Finally, the present application also provides an embodiment corresponding to a computer-readable storage medium. A computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor, the steps described in the foregoing method embodiments are implemented.

It can be understood that, if the methods in the above embodiments are implemented in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , execute all or part of the steps of the methods described in the various embodiments of the present application. 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 data protection system and data protection method, device and medium provided by the present application have been described in detail above. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present application, several improvements and modifications can also be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations. There is no such actual relationship or sequence between operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Claims (10)

1. A data protection system, comprising:

the device comprises a hard disk power supply circuit (1), a detection circuit (2) and a discharge circuit (3);

the first end of the discharge circuit (3) is connected with the first end of an energy storage capacitor of the hard disk power supply circuit (1), and the second end of the discharge circuit (3) and the second end of the energy storage capacitor are both grounded;

the detection circuit (2) is connected with the discharge circuit (3), and when a short-circuit signal generated by grounding of the detection end of the detection circuit (2) is detected, the discharge circuit (3) is controlled to be conducted, so that the energy storage capacitor is discharged.

2. The data protection system according to claim 1, wherein the detection circuit (2) includes a switching device and a detection coil (5) connected to the switching device;

the detection coil (5) is arranged at the frame of the circuit board (4) of the hard disk, and when the detection coil (5) is grounded due to the short circuit of the hard disk, the short-circuit signal is generated.

3. The data protection system according to claim 2, wherein the switching device is a MOS transistor;

the detection coil (5) is connected with the control end of the MOS tube.

4. The data protection system according to claim 2, wherein the detection circuit (2) further comprises: a current limiting resistor;

the first end of the current-limiting resistor is connected with the second end of the switching device, and the second end of the current-limiting resistor is grounded.

5. The data protection system according to claim 2, wherein the detection circuit (2) further comprises: a boost resistor;

the first end of the boost resistor is connected with the first end of the switch device, and the second end of the boost resistor is connected with the detection circuit (2).

6. A data protection method applied to the data protection system according to any one of claims 1 to 5, comprising:

judging whether a short-circuit signal sent by the detection circuit (2) is acquired or not;

and if the short-circuit signal is acquired, controlling the switching device to be switched on so as to discharge the energy storage capacitor.

7. The data protection method of claim 6, wherein controlling the switching device to conduct to discharge the energy storage capacitor comprises:

judging whether the hard disk power supply circuit (1) stops supplying power or not;

and if the power supply is stopped, controlling the switching device to be switched on under the condition of acquiring the short-circuit signal, so that the energy storage capacitor is discharged.

8. A data protection device, comprising:

the judging module is used for judging whether the short-circuit signal sent by the detection circuit (2) is acquired or not;

and the control module is used for controlling the energy storage resistor to discharge if the short-circuit signal is acquired.

9. A data protection device comprising a memory for storing a computer program;

a processor for implementing the steps of the data protection method according to any one of claims 6 or 7 when executing said computer program.

10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the data protection method according to any one of claims 6 or 7.

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