Very micro intelligent hardware device and portable memory

Abstract

The utility model provides a very micro type intelligent hardware device comprising an anti-tamper detection module, the anti-tamper detection module comprises an anti-tamper switch, a Hall sensor and a permanent magnet, the Hall sensor is connected to the inner wall of one side of the end where a data transmission interface is located in a housing, and the permanent magnet is connected to the Hall sensor. The permanent magnet is arranged on the inner wall of the other side opposite to the Hall sensor, the anti-disassembly switch is connected between the inner walls of the two sides of the other end of the shell in an abutting mode, and the output end of the anti-disassembly switch and the output end of the Hall sensor are connected in series and electrically connected with the MCU. The Hall sensor is located at the opening end of the shell, the anti-disassembly switch is located at the other end of the shell, detection is carried out in two directions, and a corresponding level signal can be output and obtained in time as long as one of the Hall sensor and the anti-disassembly switch detects that the shell is disassembled.

Description

Technical Field

[0001] This utility model relates to the field of storage devices, specifically to a very miniature intelligent hardware device and a portable storage device. Background Technology

[0002] With the popularization of mobile internet and the widespread use of smart terminals, mobile devices (such as smartphones and tablets) have become the main carriers of personal privacy and sensitive data. These devices contain a large amount of personal information, financial data, work materials, etc. When certain software programs are run on mobile devices, the internal privacy and sensitive data are easily leaked. Therefore, it is essential to achieve complete isolation and protection of this privacy and sensitive data.

[0003] Patent document CN114021213A discloses an anti-tamper component, electronic device, and anti-tamper method. The anti-tamper component includes: a storage device; and an anti-tamper mechanism connected to the storage device. When the storage device is installed in the electronic device, in response to the opening of the electronic device's casing or the removal of the storage device, the anti-tamper mechanism triggers the storage device to delete the data stored in the storage device. While theoretically avoiding the risk of data access, the design of the anti-tamper component and its long-term effective operation remain unresolved in practice. Therefore, effectively and sustainably detecting whether the hard drive's casing has been disassembled is crucial. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a very miniature intelligent hardware device and a portable storage device.

[0005] A very miniature intelligent hardware device according to the present invention includes: a shell 1 and a cap 2;

[0006] The housing 1 contains: a system-on-a-chip (SoC), a memory, a power management chip, an anti-tamper detection module, an MCU, and a backup battery;

[0007] The output terminals of the tamper switch and the Hall sensor are electrically connected to the MCU. The MCU is electrically connected to the backup battery and the system-on-a-chip (SoC). The SoC is electrically connected to the memory and the power management chip, respectively.

[0008] One end of the outer shell 1 is provided with a data transmission interface module 3, which is electrically connected to the system-on-a-chip (SoC). The cap 2 is movably connected to the end of the outer shell 1 where the data transmission interface is located.

[0009] The tamper detection module includes a tamper switch, a Hall sensor, and a permanent magnet. The Hall sensor is connected to the inner wall of one side of the housing 1 where the data transmission interface is located. The permanent magnet is disposed on the inner wall of the opposite side of the Hall sensor. The tamper switch abuts between the inner walls of the two sides of the other end of the housing 1. The output terminals of the tamper switch and the Hall sensor are connected in series and electrically connected to the system-on-a-chip (SoC).

[0010] When the outer casing 1 is not opened, the anti-tamper switch is in the first on / off state due to the force of the inner wall of the outer casing 1, and outputs a low-level signal. The Hall sensor detects the strong magnetic field of the permanent magnet and outputs a low-level signal.

[0011] When the outer casing 1 is opened, the anti-tamper switch loses the force of the inner wall of the outer casing 1, resets to the second on / off state, and outputs a high-level signal. The Hall sensor detects the weak magnetic field of the permanent magnet or cannot detect the magnetic field, and outputs a high-level signal.

[0012] Furthermore, the data transmission interface 3 includes: a data interface and a CC detection circuit;

[0013] The CC pin of the data interface is connected to the CC detection circuit, and the data transmission interface of the CC detection circuit is connected to the system-on-a-chip (SoC). The CC detection circuit enables different types of devices to communicate and charge through the data interface.

[0014] Furthermore, the data interface includes a USB Type-C interface.

[0015] Furthermore, the tamper-proof switch includes a spring-loaded button. When the housing 1 is not opened, the spring-loaded button is compressed against the inner wall of the housing 1 and is in a closed state, and the MCU receives a low level. When the housing 1 is opened, the spring-loaded button is reset to an open state under the action of elasticity, and the MCU receives a high level.

[0016] Furthermore, the backup battery is electrically connected to the CC detection circuit, and obtains power when the very miniature intelligent hardware device is connected to the host device.

[0017] Furthermore, the cap 2 includes an outer cap 21 and an inner cap 22;

[0018] The outer cap 21 is a hollow cuboid with an opening on one side. A recess 201 is provided on the inner wall of the opening, and the recess 201 is fitted onto the corresponding protrusion 101 of the outer shell 1.

[0019] The inner cap 22 is disposed inside the outer cap 21. When the recess 201 is sleeved on the protrusion 101, the inner cap 22 can be simultaneously sleeved on the data transmission interface.

[0020] Furthermore, the inner wall of the inner cap 22 is provided with multiple protruding strips to increase the friction between the inner cap 22 and the data transmission interface.

[0021] Furthermore, the outer shell 1 includes an upper shell and a lower shell, which are connected by studs located at the four corners.

[0022] Furthermore, the memory includes a first storage area, and the MCU includes a second storage area.

[0023] A portable storage device according to the present invention includes the aforementioned miniature intelligent hardware device.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention provides a miniature intelligent hardware device that detects whether the casing has been opened using a combination of an anti-tamper switch and a Hall sensor. The Hall sensor is located at the opening end of the casing (at the data transmission interface), while the anti-tamper switch is located at the other end, allowing for detection from both directions. Utilizing the higher sensitivity of the Hall sensor, even minor separation of the casing at the opening can be detected. The outputs of both the anti-tamper switch and the Hall sensor are connected in series to a system-on-a-chip (SoC) or microcontroller (MCU), meaning that as long as either one detects that the casing has been opened, a corresponding voltage level signal will be output and acquired promptly.

[0026] The device utilizes its built-in power management chip and CC detection circuit to charge the backup battery when an external device is plugged in, thereby ensuring the normal operation of the tamper detection module. Attached Figure Description

[0027] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a cross-sectional view of the present invention;

[0030] Figure 3 This is a circuit diagram of the present invention. Detailed Implementation

[0031] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a very miniature intelligent hardware device, comprising: a housing 1 and a cap 2. In addition to the existing system-on-a-chip (SoC), memory, and power management chip, the housing 1 also houses an anti-tamper detection module, an MCU, and a backup battery. The SoC is electrically connected to the memory and the power management chip, respectively.

[0033] Specifically, the outer casing 1 includes an upper casing and a lower casing, which are connected by studs located at the four corners. A data transmission interface module 3 is located at one end of the outer casing 1. The data transmission interface module 3 is electrically connected to the system-on-a-chip (SoC). A cap 2 is movably connected to the end of the outer casing 1 where the data transmission interface is located. The data transmission interface 3 includes a data interface and a CC detection circuit. The data interface can be a USB Type-C interface. The CC pin of the data interface is connected to the CC detection circuit, and the data transmission interface of the CC detection circuit is connected to the SoC. The CC detection circuit is a core component of the USB Type-C interface, ensuring the physical connection and power management of the interface. It also involves data transmission and communication between devices, ensuring the compatibility of the USB Type-C interface so that different types of devices can communicate and charge through the same interface. By detecting voltage changes on the CC pin, the connector orientation is determined, and communication with the host controller is established to achieve correct power management and data transmission configuration.

[0034] In this application, the tamper detection module includes a tamper switch 6, a Hall sensor 4, and a permanent magnet 5. The outputs of the tamper switch and the Hall sensor are electrically connected to an MCU, which is electrically connected to a backup battery and a system-on-a-chip (SoC). The backup battery is electrically connected to a CC detection circuit, obtaining power when the very miniature smart hardware device is connected to the host device. The backup battery is charged when an external device is inserted using the device's built-in power management chip and CC detection circuit, thus ensuring the long-term normal operation of the tamper detection module. Specifically, the Hall sensor 4 is connected to the inner wall of one side of the housing 1 where the data transmission interface is located, the permanent magnet 5 is disposed on the inner wall opposite to the Hall sensor 4, and the tamper switch 6 abuts between the two inner walls at the other end of the housing 1. The outputs of the tamper switch 6 and the Hall sensor 4 are both electrically connected to the SoC. Therefore, if either of them detects that the housing has been opened, the output level will change from low to high, thus being acquired by the SoC.

[0035] The tamper-proof switch includes a spring-loaded button. When the housing 1 is not opened, the spring-loaded button is compressed and pressed against the inner wall of the housing 1, and the MCU receives a low level. When the housing 1 is opened, the spring-loaded button is reset to the open state under the action of elasticity, and the MCU receives a high level.

[0036] Working Principle: When the outer casing 1 is not opened, the tamper switch is in the first on / off state due to the force of the inner wall of the outer casing 1, outputting a low-level signal. The Hall sensor detects the strong magnetic field of the permanent magnet and outputs a low-level signal. When the outer casing 1 is opened, the tamper switch loses the force of the inner wall of the outer casing 1, resets to the second on / off state, outputting a high-level signal. The Hall sensor detects the weak magnetic field of the permanent magnet and outputs a high-level signal. The MCU can promptly delete the data stored internally. The eMMC area can store a large amount of data, and deleting this data requires a significant amount of power. However, the MCU can store a small amount of data, such as the key used to decrypt data in the eMMC area. In this case, the MCU only needs to delete the key it stores to ensure the security of the eMMC area data. Furthermore, because the amount of data deleted is small, the power demand is low, avoiding the problem of insufficient backup battery power for data deletion.

[0037] The cap 2 includes an outer cap 21 and an inner cap 22. The outer cap 21 is a hollow cuboid with an opening on one side. A recess 201 is provided on the inner wall of the opening, which fits onto the corresponding protrusion 101 on the outer shell 1. The inner cap 22 is disposed inside the outer cap 21. When the recess 201 is fitted onto the protrusion 101, the inner cap 22 can simultaneously fit onto the data transmission interface. The inner wall of the inner cap 22 has multiple raised strips to increase the friction between the inner cap 22 and the data transmission interface.

[0038] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A very miniature intelligent hardware device, characterized in that, include: Outer shell (1) and cap (2); The housing (1) contains: a system-on-a-chip (SoC), a memory, a power management chip, an anti-tamper detection module, an MCU, and a backup battery; The tamper detection module includes: an tamper switch, a Hall sensor, and a permanent magnet; The output terminals of the tamper switch and the Hall sensor are electrically connected to the MCU. The MCU is electrically connected to the backup battery and the system-on-a-chip (SoC). The SoC is electrically connected to the memory and the power management chip, respectively. One end of the outer shell (1) is provided with a data transmission interface module (3), the data transmission interface module (3) is electrically connected to the system-on-a-chip (SoC), and the cap (2) is movably connected to the end of the outer shell (1) where the data transmission interface module is located; The Hall sensor is connected to the inner wall of one side of the housing (1) where the data transmission interface module is located. The permanent magnet is disposed on the inner wall of the other side opposite to the Hall sensor. The anti-tamper switch abuts between the inner walls of the two sides of the other end of the housing (1). The anti-tamper switch and the output terminal of the Hall sensor are connected in series and electrically connected to the system-on-a-chip (SoC). When the outer shell (1) is not opened, the anti-tamper switch is in the first on / off state due to the force of the inner wall of the outer shell (1) and outputs a low-level signal. The Hall sensor detects the strong magnetic field of the permanent magnet and outputs a low-level signal. When the outer shell (1) is opened, the anti-tamper switch loses the force of the inner wall of the outer shell (1), resets to the second on / off state, outputs a high-level signal, and the Hall sensor detects the weak magnetic field of the permanent magnet or cannot detect the magnetic field, and outputs a high-level signal.

2. The ultra-miniature intelligent hardware device according to claim 1, characterized in that, The data transmission interface module (3) includes: a data interface and a CC detection circuit; The CC pin of the data interface is connected to the CC detection circuit, and the data transmission interface module of the CC detection circuit is connected to the system-on-a-chip (SoC). The CC detection circuit enables different types of devices to communicate and charge through the data interface.

3. The ultra-miniature intelligent hardware device according to claim 2, characterized in that, The data interface includes a USB Type-C interface.

4. The ultra-miniature intelligent hardware device according to claim 2, characterized in that, The tamper switch includes a spring button. When the housing (1) is not opened, the spring button is compressed and pressed against the inner wall of the housing (1) and is in a closed state, and the MCU receives a low level. When the outer casing (1) is disassembled, the elastic button is reset to the open state under the action of elasticity, and the MCU obtains a high level.

5. The ultra-miniature intelligent hardware device according to claim 4, characterized in that, The backup battery is electrically connected to the CC detection circuit and obtains power when the very miniature intelligent hardware device is connected to the host device.

6. The ultra-miniature intelligent hardware device according to claim 1, characterized in that, The cap (2) includes an outer cap (21) and an inner cap (22); The outer cap (21) is a hollow cuboid with an opening on one side. A recess (201) is provided on the inner wall of the opening. The recess (201) is fitted onto the corresponding protrusion (101) of the outer shell (1). The inner cap (22) is disposed inside the outer cap (21). When the recess (201) is fitted onto the protrusion (101), the inner cap (22) can be simultaneously fitted onto the data transmission interface module.

7. The ultra-miniature intelligent hardware device according to claim 6, characterized in that, The inner wall of the inner cap (22) is provided with multiple protruding strips to increase the friction between the inner cap (22) and the data transmission interface module.

8. The ultra-miniature intelligent hardware device according to claim 1, characterized in that, The outer shell (1) includes an upper shell and a lower shell, which are connected by studs located at the four corners.

9. The ultra-miniature intelligent hardware device according to claim 4, characterized in that, The memory includes a first storage area, and the MCU includes a second storage area.

10. A portable storage device, characterized in that, Includes the very miniature intelligent hardware device as described in any one of claims 1-9.

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