Physical destruction circuit detection device

Abstract

The utility model discloses a physical destruction circuit detection device, which is applied to the technical field of solid state disks, is used for solving the problems of low coverage rate of physical destruction circuit detection and direct destruction of solid state disks in the prior art, and specifically comprises a control module, a power supply injection circuit and a destruction signal detection circuit, the control module controls the power supply injection circuit to input the first voltage or the second voltage to the physical destruction circuit of the solid state disk, and provides a driving signal for the physical destruction circuit of the solid state disk; the destruction signal detection circuit is used for detecting whether the voltage of a detection point of the physical destruction circuit is abnormal or not when the first voltage or the second voltage supplies power to the physical destruction circuit, obtaining a detection result and sending the detection result to the control module. Thus, the high-voltage circuit or the low-voltage circuit in the physical destruction circuit is driven to work respectively, the physical destruction circuit is detected on the premise that the solid state disk is not destroyed, the method is suitable for full-number detection of mass-produced solid state disks, and the detection coverage rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of solid-state drive technology, and in particular to a physical destruction circuit detection device. Background Technology

[0002] Solid-state drives (SSDs) are reliable storage devices used in certain confidential applications. They are often equipped with additional physical destruction circuits to damage the internal structure of the storage cells by applying high voltage and high current to the storage cells in the SSD, ensuring that the data in the SSD cannot be recovered in any form.

[0003] Currently, due to the unique nature of the physical destruction circuitry—which directly destroys the solid-state drive (SSD)—it's impossible to directly test its functionality by controlling its operation. Existing testing methods involve sampling SSDs, selecting a subset as samples, and controlling the physical destruction circuitry of these samples to physically destroy them. This approach only guarantees that the physical destruction circuitry in most SSDs within a batch functions correctly; it doesn't provide 100% product coverage. Furthermore, using this method for high-capacity SSDs incurs high sampling costs. Utility Model Content

[0004] This utility model provides a physical destruction circuit detection device to solve the problem that existing physical destruction circuit detection methods have low coverage and directly destroy solid-state drives.

[0005] The technical solution provided by this utility model embodiment is as follows:

[0006] On the one hand, this utility model embodiment provides a physical destruction circuit detection device for solid-state drives, including: a control module, a power injection circuit, and a destruction signal detection circuit;

[0007] The first output terminal of the control module is connected to the control terminal of the power injection circuit, the second output terminal of the control module is connected to the control terminal of the physical destruction circuit, the first input terminal of the controlled module is connected to the output terminal of the destruction signal detection circuit; the output terminal of the power injection circuit is connected to the power supply terminal of the physical destruction circuit; the input terminal of the destruction signal detection circuit is connected to the detection point of the physical destruction circuit.

[0008] The control module is used to control the power injection circuit to input a first voltage or a second voltage to the physical destruction circuit of the solid-state drive; it is also used to provide drive signals for the physical destruction circuit of the solid-state drive.

[0009] The power injection circuit is used to supply power to the physical destruction circuit through a first voltage or a second voltage; wherein, the first voltage is the power supply voltage of the high-voltage circuit in the physical destruction circuit, and the second voltage is the power supply voltage of the low-voltage circuit in the physical destruction circuit.

[0010] The destruction signal detection circuit is used to detect whether the voltage at the detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the first voltage or the second voltage, obtain the detection result and send it to the control module.

[0011] In one possible implementation, the power injection circuit includes: a high-voltage power supply circuit and a low-voltage power supply circuit.

[0012] The input terminal of the high-voltage power supply circuit is connected to the external first power source, the output terminal of the high-voltage power supply circuit is connected to the high-voltage power supply terminal of the physical destruction circuit, and the control terminal of the high-voltage power supply circuit is connected to the first output terminal of the control module; the high-voltage power supply circuit is used to output the first voltage to the high-voltage power supply terminal of the physical destruction circuit.

[0013] The input terminal of the low-voltage power supply circuit is connected to the external second power supply, the output terminal of the low-voltage power supply circuit is connected to the low-voltage power supply terminal of the solid-state drive, and the control terminal of the low-voltage power supply circuit is connected to the third output terminal of the control module; the low-voltage power supply circuit is used to output the second voltage to the low-voltage power supply terminal of the physical destruction circuit.

[0014] In one possible implementation, the high-voltage power supply circuit includes: a first NMOS transistor, a first PMOS transistor, a first diode, a first resistor, a second resistor, and a third resistor;

[0015] The first end of the first resistor is connected to an external first power supply, and the second end of the first resistor is connected to the first end of the second resistor and the gate of the first PMOS transistor, respectively.

[0016] The source of the first PMOS transistor is connected to an external first power supply, and the drain of the first PMOS transistor is connected to the anode of the first diode; the cathode of the first diode is connected to the high-voltage power supply terminal of the physical destruction circuit.

[0017] The source of the first NMOS transistor is connected to ground, the drain of the first NMOS transistor is connected to the second end of the second resistor, and the gate of the first NMOS transistor is connected to the first output terminal of the control module.

[0018] The first end of the third resistor is connected to the gate of the first NMOS transistor, and the second end of the third resistor is connected to the source of the first NMOS transistor.

[0019] In one possible implementation, the low-voltage power supply circuit includes: a second NMOS transistor, a second PMOS transistor, a second diode, a fourth resistor, and a fifth resistor;

[0020] The first end of the fourth resistor is connected to the external second power supply, and the second end of the fourth resistor is connected to the drain of the second NMOS transistor and the gate of the second PMOS transistor, respectively.

[0021] The source of the second PMOS transistor is connected to an external second power supply, and the drain of the second PMOS transistor is connected to the anode of the second diode; the cathode of the second diode is connected to the low-voltage power supply terminal of the physical destruction circuit.

[0022] The source of the second NMOS transistor is connected to ground, and the gate of the second NMOS transistor is connected to the third output terminal of the control module.

[0023] The first end of the fifth resistor is connected to the gate of the second NMOS transistor, and the second end of the fifth resistor is connected to the source of the second NMOS transistor.

[0024] In one possible implementation, the destruction signal detection circuit includes: a high-voltage signal detection circuit and a low-voltage signal detection circuit;

[0025] The input terminal of the high-voltage signal detection circuit is connected to the high-voltage detection point of the physical destruction circuit, the output terminal of the high-voltage signal detection circuit is connected to the first input terminal of the control module, and the power supply terminal of the high-voltage signal detection circuit is connected to the external second power supply. The high-voltage signal detection circuit is used to detect whether the voltage of the high-voltage detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the first voltage, obtain the high-voltage detection result, and send it to the control module.

[0026] The input terminal of the low-voltage signal detection circuit is connected to the low-voltage detection point of the physical destruction circuit, the output terminal of the low-voltage signal detection circuit is connected to the second input terminal of the control module, and the power supply terminal of the low-voltage signal detection circuit is connected to the external second power supply. The low-voltage signal detection circuit is used to detect whether the voltage of the low-voltage detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the second voltage, obtain the low-voltage detection result, and send it to the control module.

[0027] In one possible implementation, the high-voltage signal detection circuit includes: a first operational amplifier, a first capacitor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, and a filter circuit.

[0028] The positive input terminal of the first operational amplifier is connected to the first terminal of the sixth resistor and the first terminal of the seventh resistor, respectively. The negative input terminal of the first operational amplifier is connected to the first terminal of the first capacitor and the high voltage detection point of the physical destruction circuit, respectively. The enable terminal of the first operational amplifier is connected to the first terminal of the eighth resistor, the positive power supply terminal of the first operational amplifier is connected to the first terminal of the external second power supply and the filter circuit, respectively. The negative power supply terminal of the first operational amplifier is connected to ground, and the output terminal of the first operational amplifier is connected to the first input terminal of the control module through the ninth resistor.

[0029] The second terminal of the sixth resistor is connected to ground; the second terminal of the seventh resistor is connected to the second external power supply and the second terminal of the eighth resistor, respectively; the second terminal of the first capacitor is connected to ground; and the second terminal of the filter circuit is connected to ground.

[0030] In one possible implementation, the physical destruction circuit detection device further includes: a current acquisition circuit;

[0031] The output of the power injection circuit is connected to the power supply terminal of the physical destruction circuit via the current acquisition circuit, and the output of the current acquisition circuit is connected to the third input terminal of the control module; the current acquisition circuit is used to acquire the operating current of the physical destruction circuit in real time.

[0032] In one possible implementation, the current acquisition circuit includes: an analog-to-digital converter chip, a tenth resistor, an eleventh resistor, and a twelfth resistor;

[0033] The first end of the tenth resistor is connected to the output of the power injection circuit and the positive input of the analog-to-digital converter chip, respectively; the second end of the tenth resistor is connected to the first end of the eleventh resistor and the negative input of the analog-to-digital converter chip, respectively.

[0034] The second terminal of the eleventh resistor is connected to the first terminal of the twelfth resistor and the power supply terminal of the solid-state drive; the second terminal of the twelfth resistor is connected to ground.

[0035] The output of the analog-to-digital converter chip is connected to the third input of the control module.

[0036] In one possible implementation, the physical destruction circuit detection device further includes: an interface circuit;

[0037] The input terminal of the interface circuit is connected to the fourth output terminal of the control module, and the output terminal of the interface circuit is connected to the external host computer; the interface circuit is used to perform data format conversion between the physical destruction circuit detection device and the external host computer.

[0038] In one possible implementation, the interface circuit includes: a USB interface and an interface conversion chip;

[0039] The interface conversion chip is connected to the fourth output terminal of the control module, and the output terminal of the interface conversion chip is connected to the USB interface.

[0040] The beneficial effects of this utility model embodiment are as follows:

[0041] In this embodiment of the invention, by setting a power injection circuit and a destruction signal detection circuit, the physical destruction circuit is powered by a first voltage or a second voltage under the control of the control module, and the voltage of each detection point is detected under different power supply voltages. That is, the high-voltage circuit or low-voltage circuit in the physical destruction circuit is driven to work respectively. Without activating the destruction function, the device judges whether there are functional problems or soldering problems in the destruction circuit based on the voltage of the detection points of the circuits with different power supplies. In this embodiment of the invention, the physical destruction circuit detection device can detect the physical destruction circuit without destroying the solid-state drive, and is suitable for the full detection of batch-produced solid-state drives, effectively improving the coverage of physical destruction circuit detection.

[0042] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0043] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0044] Figure 1 This is a schematic diagram of the first circuit structure of the physical destruction circuit detection device in this utility model embodiment;

[0045] Figure 2 This is a schematic diagram of the second circuit structure of the physical destruction circuit detection device in this embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of a third circuit structure of the physical destruction circuit detection device in this utility model embodiment;

[0047] Figure 4 This is a schematic diagram of the fourth circuit structure of the physical destruction circuit detection device in this utility model embodiment;

[0048] Figure 5 This is a schematic diagram of the fifth circuit structure of the physical destruction circuit detection device in this utility model embodiment;

[0049] Figure 6 This is a schematic diagram of the sixth circuit structure of the physical destruction circuit detection device in this utility model embodiment;

[0050] Figure 7 This is a schematic diagram of the seventh circuit structure of the physical destruction circuit detection device in this utility model embodiment;

[0051] Figure 8 This is a schematic diagram of the eighth circuit structure of the physical destruction circuit detection device in this utility model embodiment;

[0052] Figure 9 This is a schematic diagram of the ninth circuit structure of the physical destruction circuit detection device in this utility model embodiment. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] This utility model embodiment provides a physical destruction circuit detection device for solid-state drives, see reference. Figure 1 As shown, the physical destruction circuit detection device 100 includes at least: a control module 110, a power injection circuit 120, and a destruction signal detection circuit 130;

[0055] The first output terminal of the control module 110 is connected to the control terminal of the power injection circuit 120, the second output terminal of the control module 110 is connected to the control terminal of the physical destruction circuit, the first input terminal of the control module 110 is connected to the output terminal of the destruction signal detection circuit 130; the output terminal of the power injection circuit 120 is connected to the power supply terminal of the physical destruction circuit; the input terminal of the destruction signal detection circuit 130 is connected to the detection point of the physical destruction circuit.

[0056] The control module 110 is used to control the power injection circuit 120 to input a first voltage or a second voltage to the physical destruction circuit of the solid-state drive; it is also used to provide a drive signal for the physical destruction circuit of the solid-state drive.

[0057] The power injection circuit 120 is used to supply power to the physical destruction circuit through a first voltage or a second voltage; wherein, the first voltage is the power supply voltage of the high-voltage circuit in the physical destruction circuit, and the second voltage is the power supply voltage of the low-voltage circuit in the physical destruction circuit.

[0058] The destruction signal detection circuit 130 is used to detect whether the voltage at the detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the first voltage or the second voltage, obtain the detection result and send it to the control module 110.

[0059] exist Figure 1In the physical destruction circuit detection device 100 shown, the control module 110 can be a general-purpose microcontroller or DSP, including ARM and STM32 microcontrollers. The control module 110 can control the power injection circuit 120 to provide a first voltage or a second voltage to the physical destruction circuit of the solid-state drive (SSD) through its first output port, and can also provide clock and drive signals to the SSD's physical destruction circuit through its second output port. Under the control of the control module 110, the power injection circuit 120 can output either a first voltage or a second voltage to the physical destruction circuit of the SSD. The first voltage is the high-voltage voltage required for the high-voltage circuit in the SSD's physical destruction circuit to operate, typically 13V; the second voltage is the low-voltage voltage required for the low-voltage circuit in the SSD's physical destruction circuit to operate, typically 3.3V. The physical destruction circuit of the SSD can only be triggered to operate when both the first and second power supplies are applied simultaneously, thus destroying the SSD. When only the first or second power supply is provided to the physical destruction circuit of the solid-state drive (SSD), only the high-voltage or low-voltage circuits in the physical destruction circuit operate. In this case, the physical destruction circuit cannot destroy the SSD. The proper functioning of certain voltages in a part of the circuit can be determined by detecting the voltage at a corresponding detection point in the physical destruction circuit. The destruction signal detection circuit 130 can detect the voltage at a corresponding detection point in the physical destruction circuit and compare the detected voltage with a preset voltage value. If the voltage at the detection point is higher than a preset voltage threshold, an abnormal voltage is identified and fed back to the control module 110. An abnormal voltage indicates a functional or soldering problem in the physical destruction circuit. If the voltage at the detection point is lower than the preset voltage threshold, the voltage is considered normal, indicating that the physical destruction circuit does not have a functional or soldering problem.

[0060] In specific implementation, the power injection circuit 120 in the physical destruction circuit detection device 100 provided in this embodiment of the present invention can have various specific structures to realize its function. For example Figure 2 As shown, the power injection circuit 120 may specifically include: a high-voltage power supply circuit 121 and a low-voltage power supply circuit 122;

[0061] The input terminal of the high-voltage power supply circuit 121 is connected to an external first power source, the output terminal of the high-voltage power supply circuit 121 is connected to the high-voltage power supply terminal of the physical destruction circuit, and the control terminal of the high-voltage power supply circuit 121 is connected to the first output terminal of the control module 110; the high-voltage power supply circuit 121 is used to output a first voltage to the high-voltage power supply terminal of the physical destruction circuit.

[0062] The input terminal of the low-voltage power supply circuit 122 is connected to an external second power supply, the output terminal of the low-voltage power supply circuit 122 is connected to the low-voltage power supply terminal of the solid-state drive, and the control terminal of the low-voltage power supply circuit 122 is connected to the third output terminal of the control module 110; the low-voltage power supply circuit 122 is used to output a second voltage to the low-voltage power supply terminal of the physical destruction circuit.

[0063] exist Figure 2 The physical destruction circuit detection device 100 shown includes a high-voltage circuit and a low-voltage circuit in the physical destruction circuit. The physical destruction circuit is equipped with a high-voltage power supply terminal and a low-voltage power supply terminal, respectively. The high-voltage power supply terminal is the power input terminal for the high-voltage circuit in the physical destruction circuit, and the low-voltage power supply terminal is the power input terminal for the low-voltage circuit in the physical destruction circuit. The high-voltage power supply circuit 121, as a controllable power supply circuit, can output a first voltage to the high-voltage power supply terminal of the physical destruction circuit under the drive of the control module 110, thereby powering the high-voltage circuit of the physical destruction circuit. The low-voltage power supply circuit 122, as a controllable power supply circuit, can output a second voltage to the low-voltage power supply terminal of the physical destruction circuit under the drive of the control module 110, thereby powering the low-voltage circuit of the physical destruction circuit.

[0064] In practical implementation, the high-voltage power supply circuit 121 in the physical destruction circuit detection device provided in this embodiment of the present invention can have various specific structures to realize its function. For example Figure 3 As shown, the high-voltage power supply circuit 121 may specifically include: a first NMOS transistor Q1, a first PMOS transistor Q2, a first diode D1, a first resistor R1, a second resistor R2, and a third resistor R3;

[0065] The first end of the first resistor R1 is connected to the external first power supply, and the second end of the first resistor R1 is connected to the first end of the second resistor R2 and the gate of the first PMOS transistor Q2.

[0066] The source of the first PMOS transistor Q2 is connected to the external first power supply, and the drain of the first PMOS transistor Q2 is connected to the anode of the first diode D1; the cathode of the first diode D1 is connected to the high-voltage power supply terminal of the physical destruction circuit.

[0067] The source of the first NMOS transistor Q1 is connected to ground, the drain of the first NMOS transistor Q1 is connected to the second end of the second resistor R2, and the gate of the first NMOS transistor Q1 is connected to the first output terminal of the control module 110.

[0068] The first end of the third resistor R3 is connected to the gate of the first NMOS transistor Q1, and the second end of the third resistor R3 is connected to the source of the first NMOS transistor Q1.

[0069] exist Figure 3In the physical destruction circuit detection device 100 shown, the first PMOS transistor Q2 is used to connect or disconnect the external first power supply from the physical destruction circuit. The first NMOS transistor Q1 is used to change the voltage between the source and gate of the first PMOS transistor Q2. By controlling the conduction or turn-off of the first NMOS transistor Q1, the switching state of the first PMOS transistor Q2 is controlled. The first resistor R1 and the second resistor R2 form a voltage divider structure to reduce the voltage between the source and gate of the first PMOS transistor Q2, preventing damage to the first PMOS transistor Q2 due to excessive voltage. The third resistor R3 acts as a pull-down resistor, ensuring that the initial level of the gate of the first NMOS transistor Q1 is low, and that it is in a non-conducting state when no control signal is input to the control module 110. The first diode D1 acts as a protective element to prevent the influence of directional voltage on the circuit. When the control module 110 inputs a high level to the first NMOS transistor Q1, Q1 is turned on. The voltage between the source and gate of the first PMOS transistor Q2 reaches its own drive voltage. Q2 connects the external first power supply to the physical destruction circuit, outputting the first voltage provided by the external first power supply to the high-voltage power supply terminal of the physical destruction circuit. Conversely, when the control module 110 inputs a low level to Q1, Q1 is turned off. The voltage between the source and gate of the first PMOS transistor Q2 does not reach its own drive voltage. Q2 disconnects the external first power supply from the physical destruction circuit, and the first voltage provided by the external first power supply cannot be output to the high-voltage power supply terminal of the physical destruction circuit.

[0070] In practical implementation, the low-voltage power supply circuit 122 in the physical destruction circuit detection device provided in this embodiment of the present invention can have various specific structures to realize its function. For example Figure 3 As shown, the low-voltage power supply circuit 122 may specifically include: a second NMOS transistor Q3, a second PMOS transistor Q4, a second diode D2, a fourth resistor R4, and a fifth resistor R5;

[0071] The first end of the fourth resistor R4 is connected to the external second power supply, and the second end of the fourth resistor R4 is connected to the drain of the second NMOS transistor Q3 and the gate of the second PMOS transistor Q4.

[0072] The source of the second PMOS transistor Q4 is connected to the external second power supply, and the drain of the second PMOS transistor Q4 is connected to the anode of the second diode D2; the cathode of the second diode D2 is connected to the low-voltage power supply terminal of the physical destruction circuit.

[0073] The source of the second NMOS transistor Q3 is connected to ground, and the gate of the second NMOS transistor Q3 is connected to the third output terminal of the control module 110.

[0074] The first end of the fifth resistor R5 is connected to the gate of the second NMOS transistor Q3, and the second end of the fifth resistor R5 is connected to the source of the second NMOS transistor Q3.

[0075] exist Figure 3 In the physical destruction circuit detection device 100 shown, the second PMOS transistor Q4 is used to connect or disconnect the external second power supply from the physical destruction circuit, and the second NMOS transistor Q3 is used to change the voltage between the source and gate of the second PMOS transistor Q4. The switching state of the second PMOS transistor Q4 is controlled by controlling the conduction or turn-off of the second NMOS transistor Q3. The fifth resistor R5 acts as a pull-down resistor, ensuring that the initial level of the gate of the second NMOS transistor Q3 is low, and it is in a non-conducting state when no control signal is input to the control module 110. The second diode D2 acts as a protective element to prevent the influence of directional voltage on the circuit. When the control module 110 inputs a high level to the second NMOS transistor Q3, the second NMOS transistor Q3 conducts, and the voltage between the source and gate of the second PMOS transistor Q4 reaches the transistor's own drive voltage. The second PMOS transistor Q4 connects the external second power supply to the physical destruction circuit, outputting the second voltage provided by the external second power supply to the low-voltage power supply terminal of the physical destruction circuit. Conversely, when the control module 110 inputs a low level to the second NMOS transistor Q3, the second NMOS transistor Q3 is turned off, the voltage between the source and gate of the second PMOS transistor Q4 does not reach the transistor's own drive voltage, the second PMOS transistor Q4 disconnects the connection between the external second power supply and the physical destruction circuit, and the second voltage provided by the external second power supply cannot be output to the low-voltage power supply terminal of the physical destruction circuit.

[0076] In specific implementations, the destruction signal detection circuit 130 in the physical destruction circuit detection device provided in this embodiment of the present invention can have various specific structures to realize its function. For example... Figure 4 As shown, the destruction signal detection circuit 130 may specifically include: a high-voltage signal detection circuit 131 and a low-voltage signal detection circuit 132;

[0077] The input terminal of the high-voltage signal detection circuit 131 is connected to the high-voltage detection point of the physical destruction circuit, the output terminal of the high-voltage signal detection circuit 131 is connected to the first input terminal of the control module 110, and the power supply terminal of the high-voltage signal detection circuit 131 is connected to an external second power supply. The high-voltage signal detection circuit 131 is used to detect whether the voltage of the high-voltage detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the first voltage, obtain the high-voltage detection result, and send it to the control module 110.

[0078] The input terminal of the low-voltage signal detection circuit 132 is connected to the low-voltage detection point of the physical destruction circuit, the output terminal of the low-voltage signal detection circuit 132 is connected to the second input terminal of the control module 110, and the power supply terminal of the low-voltage signal detection circuit 132 is connected to an external second power supply. The low-voltage signal detection circuit 132 is used to detect whether the voltage of the low-voltage detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the second voltage, obtain the low-voltage detection result, and send it to the control module 110.

[0079] exist Figure 4 The physical destruction circuit detection device 100 shown includes a high-voltage circuit and a low-voltage circuit. The high-voltage circuit has a corresponding high-voltage detection point, typically the voltage output terminal of the high-voltage circuit. Similarly, the low-voltage circuit has a corresponding low-voltage detection point, also typically the voltage output terminal of the low-voltage circuit. The high-voltage signal detection circuit 131 can detect the voltage of the high-voltage detection point after the physical destruction circuit is powered by a first voltage and the control module 110 provides the corresponding clock and drive signals. If the voltage of the high-voltage detection point is higher than a preset high-voltage threshold voltage, an abnormal voltage is determined and fed back to the control module 110. An abnormal voltage at the high-voltage detection point indicates a functional or soldering problem in the high-voltage circuit of the physical destruction circuit. If the voltage of the high-voltage detection point is less than or equal to the preset high-voltage threshold voltage, the voltage of the high-voltage detection point is determined to be normal. A normal voltage at the high-voltage detection point indicates that there is no functional or soldering problem in the high-voltage circuit of the physical destruction circuit. Correspondingly, the low-voltage signal detection circuit 132 can detect the voltage of the low-voltage detection point of the physical destruction circuit after the second voltage powers the physical destruction circuit and the control module 110 provides the corresponding clock signal and drive signal to the physical destruction circuit. When the voltage of the low-voltage detection point is higher than the preset low-voltage threshold voltage, it determines that the voltage of the low-voltage detection point is abnormal and feeds it back to the control module 110. The abnormal voltage of the low-voltage detection point indicates that there is a functional problem or soldering problem in the low-voltage circuit of the physical destruction circuit. When the voltage of the low-voltage detection point is less than or equal to the preset low-voltage threshold voltage, it determines that the voltage of the low-voltage detection point is normal. The normal voltage of the low-voltage detection point indicates that there is no functional problem or soldering problem in the low-voltage circuit of the physical destruction circuit.

[0080] In specific implementations, the high-voltage signal detection circuit 131 in the physical destruction circuit detection device provided in this embodiment of the present invention can have various specific structures to realize its function. For example... Figure 5 As shown, the high-voltage signal detection circuit 131 may specifically include: a first operational amplifier A1, a first capacitor C1, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, and a filter circuit 133.

[0081] The positive input terminal of the first operational amplifier A1 is connected to the first terminal of the sixth resistor R6 and the first terminal of the seventh resistor R7, respectively. The negative input terminal of the first operational amplifier A1 is connected to the first terminal of the first capacitor C1 and the high voltage detection point of the physical destruction circuit, respectively. The enable terminal of the first operational amplifier A1 is connected to the first terminal of the eighth resistor R8. The positive power supply terminal of the first operational amplifier A1 is connected to the first terminal of the external second power supply and the filter circuit 133, respectively. The negative power supply terminal of the first operational amplifier A1 is connected to ground. The output terminal of the first operational amplifier A1 is connected to the first input terminal of the control module 110 through the ninth resistor R9.

[0082] The second terminal of the sixth resistor R6 is connected to ground; the second terminal of the seventh resistor R7 is connected to the second external power supply and the second terminal of the eighth resistor R8, respectively; the second terminal of the first capacitor C1 is connected to ground; the second terminal of the filter circuit 133 is connected to ground.

[0083] exist Figure 5 In the physical destruction circuit detection device 100 shown, the first operational amplifier A1 compares the voltage at the high-voltage detection point with a preset high-voltage threshold voltage. When the voltage at the high-voltage detection point is higher than the preset high-voltage threshold voltage, it outputs a high level to the control module 110; when the voltage at the high-voltage detection point is lower than the preset high-voltage threshold voltage, it outputs a low level to the control module 110. The sixth resistor R6 and the seventh resistor R7 form a voltage divider structure. The external second power supply, the values ​​of the sixth resistor R6 and the seventh resistor R7 together determine the magnitude of the high-voltage threshold voltage. By adjusting the resistance values ​​of the sixth resistor R6 and the seventh resistor R7, the high-voltage threshold voltage can be adjusted accordingly. The eighth resistor R8 is used to adjust the enable voltage input to the first operational amplifier A1. The ninth resistor R9 is used for overcurrent protection to prevent backflow of current from the external circuit from damaging the operational amplifier. The first capacitor C1 is used to filter out high-frequency noise in the output voltage of the high-voltage detection point of the physical destruction circuit, ensuring the stability of the voltage input to the first operational amplifier A1. The filtering unit is used to filter out high-frequency noise in the external second power supply, ensuring the stability of the voltage input to the first operational amplifier A1. The filter unit may include multiple filter capacitors, with the first end of each filter capacitor connected to an external second power supply and the second end of each filter capacitor connected to ground.

[0084] It is worth mentioning that the low-voltage signal detection circuit 132 is similar to the high-voltage signal detection circuit 131 in terms of circuit structure and operation. The difference is that the resistance values ​​of the sixth resistor R6 and the seventh resistor R7 in the low-voltage signal detection circuit 132 need to be set according to the low-voltage threshold voltage.

[0085] In one possible implementation, to further detect whether there is a component misuse in the physical destruction circuit, see [reference needed]. Figure 6As shown, the physical destruction circuit detection device 100 also includes: a current acquisition circuit 140;

[0086] The output of the power injection circuit 120 is connected to the power supply terminal of the physical destruction circuit via the current acquisition circuit 140. The output of the current acquisition circuit 140 is connected to the third input terminal of the control module 110. The current acquisition circuit 140 is used to acquire the operating current of the physical destruction circuit in real time.

[0087] exist Figure 6 In the physical destruction circuit detection device 100 shown, a current acquisition circuit 140 is disposed between the power injection circuit 120 and the physical destruction circuit. The current acquisition circuit 140 can acquire the operating current of the physical destruction circuit in real time and send the acquired operating current to the control module 110. The control module 110 determines the real-time power of the physical destruction circuit based on the acquired operating current and the impedance of the acquisition element, and compares the real-time power with a preset power value to determine whether there is a problem of incorrect component selection during soldering in the physical destruction circuit. Specifically, if the difference between the real-time power of the physical destruction circuit and the preset power value is greater than a preset power difference threshold, it is determined that there is a problem of incorrect component selection during soldering in the physical destruction circuit; if the difference between the real-time power of the physical destruction circuit and the preset power value is less than the preset power difference threshold, it is determined that there is no problem of incorrect component selection during soldering in the physical destruction circuit.

[0088] In specific implementations, the current acquisition circuit 140 in the physical destruction circuit detection device provided in this embodiment of the present invention can have various specific structures to realize its function. For example... Figure 7 As shown, the current acquisition circuit 140 may specifically include: analog-to-digital converter chip 141, tenth resistor R10, eleventh resistor R11, and twelfth resistor R12;

[0089] The first end of the tenth resistor R10 is connected to the output end of the power injection circuit 120 and the positive input end of the analog-to-digital converter chip 141, respectively. The second end of the tenth resistor R10 is connected to the first end of the eleventh resistor R11 and the negative input end of the analog-to-digital converter chip 141, respectively.

[0090] The second terminal of the eleventh resistor R11 is connected to the first terminal of the twelfth resistor R12 and the power supply terminal of the solid-state drive, respectively; the second terminal of the twelfth resistor R12 is connected to ground.

[0091] The output terminal of the analog-to-digital converter chip 141 is connected to the third input terminal of the control module 110.

[0092] exist Figure 7In the physical destruction circuit detection device 100 shown, the tenth resistor R10 is used to collect the operating current of the physical destruction circuit and input the collected current to the analog-to-digital converter chip 141; the analog-to-digital converter chip 141 is used to convert the collected operating current of the physical destruction circuit from an analog quantity to a digital quantity and input it to the control module 110. The sixth resistor R6 and the seventh resistor R7 form a voltage divider structure, and the sixth resistor R6 and the seventh resistor R7 are used to adjust the power supply voltage input to the physical destruction circuit.

[0093] In one possible implementation, see [reference] Figure 8 As shown, the physical destruction circuit detection device 100 also includes: an interface circuit 150;

[0094] The input terminal of the interface circuit 150 is connected to the fourth output terminal of the control module 110, and the output terminal of the interface circuit 150 is connected to the external host computer. The interface circuit 150 is used to perform data format conversion between the physical destruction circuit detection device 100 and the external host computer.

[0095] exist Figure 8 In the physical destruction circuit detection device 100 shown, the interface circuit 150 can provide a data interface and perform data format conversion corresponding to the data format of the external host computer, so as to realize data interaction between the physical destruction circuit detection device 100 and the host computer.

[0096] In practical implementation, the interface circuit 150 in the physical destruction circuit detection device provided in this embodiment of the present invention can have various specific structures to realize its function. For example Figure 9 As shown, the interface circuit 150 may specifically include: a USB interface 151 and an interface conversion chip 152;

[0097] The interface conversion chip 152 is connected to the fourth output terminal of the control module 110, and the output terminal of the interface conversion chip 152 is connected to the USB interface 151.

[0098] exist Figure 9 In the physical destruction circuit testing device 100 shown, an external host computer can be connected to the physical destruction circuit via a USB interface 151. An interface conversion chip 152 is used to convert data formats between UART and USB. After converting the test results from UART to USB format, the physical destruction circuit testing device 100 sends the results to the host computer. The test results include: whether there is a problem with incorrect component selection during soldering in the physical destruction circuit, and / or whether there are functional or soldering problems in the physical destruction circuit.

[0099] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0100] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.

Claims

1. A device for detecting physical destruction circuits, characterized in that, For solid-state drives, the physical destruction circuit detection device includes: a control module, a power injection circuit, and a destruction signal detection circuit; The first output terminal of the control module is connected to the control terminal of the power injection circuit, the second output terminal of the control module is connected to the control terminal of the physical destruction circuit, and the first input terminal of the controlled module is connected to the output terminal of the destruction signal detection circuit; the output terminal of the power injection circuit is connected to the power supply terminal of the physical destruction circuit; and the input terminal of the destruction signal detection circuit is connected to the detection point of the physical destruction circuit. The control module is used to control the power injection circuit to input a first voltage or a second voltage to the physical destruction circuit of the solid-state drive; it is also used to provide a drive signal to the physical destruction circuit of the solid-state drive. The power injection circuit is used to supply power to the physical destruction circuit through a first voltage or a second voltage; wherein, the first voltage is the power supply voltage of the high-voltage circuit in the physical destruction circuit, and the second voltage is the power supply voltage of the low-voltage circuit in the physical destruction circuit. The destruction signal detection circuit is used to detect whether the voltage at the detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the first voltage or the second voltage, obtain the detection result, and send it to the control module.

2. The physical destruction circuit detection device according to claim 1, characterized in that, The power injection circuit includes: a high-voltage power supply circuit and a low-voltage power supply circuit; The input terminal of the high-voltage power supply circuit is connected to an external first power source, the output terminal of the high-voltage power supply circuit is connected to the high-voltage power supply terminal of the physical destruction circuit, and the control terminal of the high-voltage power supply circuit is connected to the first output terminal of the control module; the high-voltage power supply circuit is used to output the first voltage to the high-voltage power supply terminal of the physical destruction circuit. The input terminal of the low-voltage power supply circuit is connected to an external second power source, the output terminal of the low-voltage power supply circuit is connected to the low-voltage power supply terminal of the solid-state drive, and the control terminal of the low-voltage power supply circuit is connected to the third output terminal of the control module; the low-voltage power supply circuit is used to output the second voltage to the low-voltage power supply terminal of the physical destruction circuit.

3. The physical destruction circuit detection device according to claim 2, characterized in that, The high-voltage power supply circuit includes: a first NMOS transistor, a first PMOS transistor, a first diode, a first resistor, a second resistor, and a third resistor; The first end of the first resistor is connected to an external first power supply, and the second end of the first resistor is connected to the first end of the second resistor and the gate of the first PMOS transistor, respectively. The source of the first PMOS transistor is connected to an external first power supply, and the drain of the first PMOS transistor is connected to the anode of the first diode; the cathode of the first diode is connected to the high-voltage power supply terminal of the physical destruction circuit. The source of the first NMOS transistor is connected to ground, the drain of the first NMOS transistor is connected to the second end of the second resistor, and the gate of the first NMOS transistor is connected to the first output terminal of the control module. The first end of the third resistor is connected to the gate of the first NMOS transistor, and the second end of the third resistor is connected to the source of the first NMOS transistor.

4. The physical destruction circuit detection device according to claim 2, characterized in that, The low-voltage power supply circuit includes: a second NMOS transistor, a second PMOS transistor, a second diode, a fourth resistor, and a fifth resistor; The first end of the fourth resistor is connected to an external second power supply, and the second end of the fourth resistor is connected to the drain of the second NMOS transistor and the gate of the second PMOS transistor, respectively. The source of the second PMOS transistor is connected to an external second power supply, and the drain of the second PMOS transistor is connected to the anode of the second diode; the cathode of the second diode is connected to the low-voltage power supply terminal of the physical destruction circuit. The source of the second NMOS transistor is connected to ground, and the gate of the second NMOS transistor is connected to the third output terminal of the control module. The first end of the fifth resistor is connected to the gate of the second NMOS transistor, and the second end of the fifth resistor is connected to the source of the second NMOS transistor.

5. The physical destruction circuit detection device according to any one of claims 2-4, characterized in that, The destruction signal detection circuit includes: a high-voltage signal detection circuit and a low-voltage signal detection circuit; The input terminal of the high-voltage signal detection circuit is connected to the high-voltage detection point of the physical destruction circuit, the output terminal of the high-voltage signal detection circuit is connected to the first input terminal of the control module, and the power supply terminal of the high-voltage signal detection circuit is connected to an external second power supply. The high-voltage signal detection circuit is used to detect whether the voltage of the high-voltage detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the first voltage, obtain the high-voltage detection result, and send it to the control module. The input terminal of the low-voltage signal detection circuit is connected to the low-voltage detection point of the physical destruction circuit, the output terminal of the low-voltage signal detection circuit is connected to the second input terminal of the control module, and the power supply terminal of the low-voltage signal detection circuit is connected to an external second power supply. The low-voltage signal detection circuit is used to detect whether the voltage of the low-voltage detection point of the physical destruction circuit is abnormal when the physical destruction circuit is powered by the second voltage, obtain the low-voltage detection result, and send it to the control module.

6. The physical destruction circuit detection device according to claim 5, characterized in that, The high-voltage signal detection circuit includes: a first operational amplifier, a first capacitor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, and a filter circuit; The positive input terminal of the first operational amplifier is connected to the first terminal of the sixth resistor and the first terminal of the seventh resistor, respectively. The negative input terminal of the first operational amplifier is connected to the first terminal of the first capacitor and the high voltage detection point of the physical destruction circuit, respectively. The enable terminal of the first operational amplifier is connected to the first terminal of the eighth resistor. The positive power supply terminal of the first operational amplifier is connected to the external second power supply and the first terminal of the filter circuit, respectively. The negative power supply terminal of the first operational amplifier is connected to ground. The output terminal of the first operational amplifier is connected to the first input terminal of the control module through the ninth resistor. The second terminal of the sixth resistor is connected to ground; the second terminal of the seventh resistor is connected to the second external power supply and the second terminal of the eighth resistor, respectively; the second terminal of the first capacitor is connected to ground; and the second terminal of the filter circuit is connected to ground.

7. The physical destruction circuit detection device according to claim 6, characterized in that, Also includes: Current acquisition circuit; The output terminal of the power injection circuit is connected to the power supply terminal of the physical destruction circuit via the current acquisition circuit, and the output terminal of the current acquisition circuit is connected to the third input terminal of the control module; the current acquisition circuit is used to acquire the operating current of the physical destruction circuit in real time.

8. The physical destruction circuit detection device according to claim 7, characterized in that, The current acquisition circuit includes: an analog-to-digital converter chip, a tenth resistor, an eleventh resistor, and a twelfth resistor; The first end of the tenth resistor is connected to the output end of the power injection circuit and the positive input end of the analog-to-digital converter chip, respectively; the second end of the tenth resistor is connected to the first end of the eleventh resistor and the negative input end of the analog-to-digital converter chip, respectively. The second end of the eleventh resistor is connected to the first end of the twelfth resistor and the power supply terminal of the solid-state drive; the second end of the twelfth resistor is connected to ground. The output terminal of the analog-to-digital converter chip is connected to the third input terminal of the control module.

9. The physical destruction circuit detection device according to claim 8, characterized in that, Also includes: Interface circuit; The input terminal of the interface circuit is connected to the fourth output terminal of the control module, and the output terminal of the interface circuit is connected to an external host computer. The interface circuit is used for data format conversion between the physical destruction circuit detection device and the external host computer.

10. The physical destruction circuit detection device according to claim 9, characterized in that, The interface circuit includes: a USB interface and an interface conversion chip; The interface conversion chip is connected to the fourth output terminal of the control module, and the output terminal of the interface conversion chip is connected to the USB interface.

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