Data emergency protection circuit system and electronic equipment

Abstract

The utility model relates to electronic equipment safety protection technical field discloses a kind of data emergency protection circuit system and electronic equipment, effectively solve the deficiency of prior art in electronic equipment drop data protection.The composite sensor module can simultaneously collect acceleration and attitude angle change rate, significantly reduce misjudgment rate;Hardware acceleration processing unit can quickly judge drop and send emergency signal to central processing unit in time, response speed is much faster than traditional software level backup scheme;Data emergency storage circuit can complete data emergency backup in extremely short time before the power-off of storage chip under the control of central processing unit.This hardware level fast response mechanism, combined with accurate drop detection and efficient data backup function, greatly improves the data security of electronic equipment under drop condition, provides more reliable data protection scheme for user, significantly improves user experience and the reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment security protection technology, and in particular to a data emergency protection circuit system and electronic equipment. Background Technology

[0002] In the daily use of electronic devices, drops are difficult to completely avoid. For example, common electronic devices such as POS machines may suffer physical impacts from accidental drops during use or carrying. Such drops not only damage the device's casing and mechanical structure but may also cause storage chips (such as eMMC memory or NAND Flash) to suddenly lose power due to physical impact, leading to data corruption. If the storage chip cannot save or transfer data in time during the moment of power loss, it may cause data loss, file corruption, or system instability, resulting in significant inconvenience and losses for users.

[0003] Currently, existing solutions to this problem mainly focus on mechanical protection, such as using shock-absorbing structures to cushion the impact of drops. However, such mechanical protection measures can only passively protect the physical structure of the device and cannot actively protect the data integrity within the storage chips. Furthermore, existing backup solutions primarily rely on software-level data backup mechanisms, but their response time is relatively slow (typically exceeding 200ms), making it difficult to complete data protection in time during a drop. This means that in the extremely short period after a device is dropped and powered off, data cannot be effectively backed up and preserved.

[0004] Meanwhile, most existing drop detection solutions use accelerometers to monitor the movement of the equipment in order to determine whether a drop has occurred. Figure 1 As shown. However, this detection method has a high false alarm rate. For example, when the device is moved quickly in the user's hand or bumped in a vehicle, the accelerometer may mistakenly identify it as a drop, thus triggering unnecessary protection mechanisms, wasting system resources and potentially interfering with the normal operation of the device.

[0005] More importantly, the data buffering time of memory chips is extremely short after a power outage. Figure 1 Taking a typical eMMC memory as an example, its data buffering time is only 10 to 50 ms. This means that once a power outage occurs, the memory chip only has such a short time to complete the data saving or transfer. Therefore, the device must have extremely fast response capabilities to ensure that data protection operations can be completed in time at the moment of power failure.

[0006] In summary, existing technologies have many shortcomings in addressing data corruption caused by drops of electronic devices. To effectively solve this problem and improve data security in the event of a drop, it is urgent to improve and innovate existing technologies.

[0007] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0008] This invention provides a data emergency protection circuit system and electronic device to solve the problem of data corruption caused by drops of electronic devices in the prior art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] In a first aspect, this utility model provides a data emergency protection circuit system for use in electronic devices, including a composite sensor module, a hardware acceleration processing unit, and a data emergency storage circuit.

[0011] The composite sensor module is connected to the hardware acceleration processing unit and is used to collect acceleration and attitude angle change rate and send them to the hardware acceleration processing unit.

[0012] The hardware acceleration processing unit is connected to the central processing unit of the electronic device and is used to determine whether a fall has occurred based on the received acceleration and the rate of change of attitude angle, and to send a data emergency protection signal to the central processing unit when a fall is determined to have occurred.

[0013] The emergency data backup circuit is connected to the central processing unit (CPU) and is used to perform emergency backup and backup of the data under the control of the CPU after the CPU receives the emergency data protection signal.

[0014] Furthermore, in the data emergency protection circuit system, the composite sensor module includes an accelerometer and a gyroscope;

[0015] The accelerometer is connected to the hardware acceleration processing unit and is used to collect acceleration data and send it to the hardware acceleration processing unit.

[0016] The gyroscope is connected to the hardware acceleration processing unit and is used to collect the attitude angle change rate and send it to the hardware acceleration processing unit.

[0017] Furthermore, in the data emergency protection circuit system, the accelerometer is a triaxial accelerometer;

[0018] The accelerometer and the gyroscope are respectively connected to the hardware acceleration processing unit via an SPI interface.

[0019] Furthermore, in the data emergency protection circuit system, the hardware acceleration processing unit is an FPGA or an ASIC.

[0020] Furthermore, in the data emergency protection circuit system, the data emergency storage circuit includes a backup power supply and a non-volatile memory;

[0021] The non-volatile memory is connected to the central processing unit and is used to perform emergency backup and storage of data under the control of the central processing unit after the central processing unit receives the data emergency protection signal.

[0022] The backup power supply is connected to the non-volatile memory and is used to supply power to the non-volatile memory during the process of emergency backup and saving of data.

[0023] Furthermore, in the data emergency protection circuit system, the backup power supply is a supercapacitor.

[0024] Furthermore, in the data emergency protection circuit system, the non-volatile memory is a ferroelectric memory.

[0025] Furthermore, the data emergency protection circuit system also includes a self-recovery module;

[0026] The self-recovery module is connected to the composite sensor module and the central processing unit respectively. After the composite sensor module detects that the electronic device is in a static state, it sends a restart signal to the central processing unit to trigger the central processing unit to restart and perform integrity verification between the backup data read from the data emergency storage circuit and the data stored in the EMMC memory of the electronic device.

[0027] Furthermore, the data emergency protection circuit system also includes a mechanical locking mechanism;

[0028] The mechanical locking mechanism is connected to the hardware acceleration processing unit and is used to mechanically lock and protect the vulnerable parts of the electronic device under the control of the hardware acceleration processing unit when the hardware acceleration processing unit determines that a drop has occurred.

[0029] Secondly, this utility model provides an electronic device, including the data emergency protection circuit system as described in the first aspect above.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] This invention provides a data emergency protection circuit system and electronic device that effectively overcomes many shortcomings of existing technologies in data protection for electronic devices in the face of drops. First, by simultaneously acquiring acceleration and attitude angle change rate through a composite sensor module, compared to traditional solutions relying solely on accelerometers, it can more comprehensively and accurately monitor the device's motion state, significantly reducing the false judgment rate and avoiding unnecessary protection mechanisms triggered by non-drop scenarios such as rapid movement or bumps, thereby reducing system resource waste and ensuring normal device operation. Second, the introduction of a hardware acceleration processing unit enables the system to quickly process and judge the acquired sensor data in a very short time (far less than the 200ms response time of traditional software-level backup solutions). Once a drop is confirmed, this unit can immediately send a data emergency protection signal to the central processing unit, ensuring timely initiation of the data protection process within the brief buffer time before the memory chip loses power. Finally, under the control of the central processing unit, the data emergency backup circuit rapidly backs up and saves critical data, effectively preventing data loss, file corruption, or system instability caused by sudden power loss of the memory chip due to drops. This hardware-level rapid response mechanism, combined with accurate drop detection and efficient data backup, greatly improves the data security of electronic devices in the event of a drop, providing users with a more reliable data protection solution and significantly enhancing user experience and device reliability.

[0032] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the functional modules of a drop data protection scheme in the prior art;

[0035] Figure 2 This is one of the functional module schematic diagrams of a data emergency protection circuit system provided in Embodiment 1 of this utility model;

[0036] Figure 3This is the second functional module schematic diagram of a data emergency protection circuit system provided in Embodiment 1 of this utility model;

[0037] Figure 4 This is the third functional module schematic diagram of a data emergency protection circuit system provided in Embodiment 1 of this utility model.

[0038] Figure label:

[0039] Composite sensor module 1, hardware acceleration processing unit 2, emergency data storage circuit 3, self-recovery module 4, mechanical locking mechanism 5;

[0040] Accelerometer 101, gyroscope 102;

[0041] Backup power supply 301, non-volatile memory 302. Detailed Implementation

[0042] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0043] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0044] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0045] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0046] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0047] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0048] In this application, expressions such as "greater than", "less than", and "exceeding" are understood to exclude the stated number; expressions such as "above", "below", and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times", unless otherwise explicitly specified.

[0049] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0050] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0051] Example 1

[0052] Please refer to Figure 2 This utility model provides a data emergency protection circuit system for electronic devices. The system aims to enhance the protection of internal data in the event of an accidental drop and can be widely applied to various electronic devices with data storage functions. The system mainly consists of three core modules: a composite sensor module 1, a hardware acceleration processing unit 2, and a data emergency storage circuit 3.

[0053] The composite sensor module 1 and the hardware acceleration processing unit 2 are interconnected, forming a closely collaborative data acquisition and transmission link. The composite sensor module 1 has the function of simultaneously acquiring acceleration and attitude angle change rate. During the operation of the electronic device, the composite sensor module 1 continuously monitors the device's acceleration and attitude angle changes in real time, and accurately sends the acquired acceleration and attitude angle change rate data to the hardware acceleration processing unit 2. By simultaneously acquiring these two key data points, the device's motion state can be reflected more comprehensively and meticulously, providing richer and more accurate information for subsequent drop assessment.

[0054] The hardware acceleration processing unit 2 is connected to the central processing unit (CPU) of the electronic device and plays a core decision-making role in the entire data emergency protection circuit system. When the hardware acceleration processing unit 2 receives acceleration and attitude angle change rate data from the composite sensor module 1, it quickly analyzes and processes this data. By comprehensively judging the acceleration and attitude angle change rate, the hardware acceleration processing unit 2 can accurately determine whether the electronic device has been dropped. Once a drop is determined, the hardware acceleration processing unit 2 immediately sends a data emergency protection signal to the CPU. The timely transmission of this signal is the key trigger point of the entire data emergency protection process, marking the start of the system's data protection state. Compared with traditional software-level backup solutions, the introduction of the hardware acceleration processing unit 2 enables the system to complete the processing and judgment of sensor data in a very short time, with a response time of ≤5ms, far lower than the 200ms response time typically required by traditional software-level backup solutions. This rapid response capability ensures that the system can promptly initiate the data protection process during the brief buffering time before the storage chip loses power due to a drop, gaining valuable time for the safe preservation of data.

[0055] The emergency data preservation circuit 3, connected to the central processing unit (CPU), is the execution unit responsible for the final data preservation in the emergency data protection circuit system. When the CPU receives the emergency data protection signal from the hardware acceleration processing unit 2, it quickly sends control commands to the emergency data preservation circuit 3. Under the precise control of the CPU, the emergency data preservation circuit 3 immediately initiates an emergency data backup operation. It rapidly reads and backs up critical data stored in the electronic device, ensuring that this data is not lost in the event of a sudden power outage caused by a drop on the eMMC memory. In this way, the emergency data preservation circuit 3 effectively avoids a series of problems caused by sudden power loss of the memory chip due to a drop, such as data loss, file corruption, or system instability, providing a solid guarantee for the data security of electronic devices.

[0056] In summary, this embodiment effectively solves many problems in the existing technology regarding drop data protection for electronic devices through innovative circuit system design. Firstly, the composite sensor module 1 can simultaneously collect acceleration and attitude angle change rate. Compared to traditional solutions relying solely on accelerometers, it can more comprehensively and accurately monitor the device's motion state, significantly reducing the false alarm rate. This avoids erroneous triggering of the protection mechanism due to non-drop scenarios such as rapid device movement or bumps in a vehicle, thereby reducing the waste of system resources and ensuring the normal operation of the device.

[0057] Secondly, the introduction of hardware acceleration processing unit 2 enables the system to process and judge the collected sensor data in a very short time (far less than the 200ms response time of traditional software-level backup solutions). Once a drop is confirmed, this unit can immediately send a data emergency protection signal to the central processing unit to ensure that the data protection process is initiated in time during the brief buffer time before the storage chip loses power (e.g., 10 to 50ms for EMMC memory).

[0058] Finally, under the control of the central processing unit, the emergency data backup circuit 3 can quickly back up and save critical data. This mechanism effectively avoids data loss, file corruption, or system instability caused by sudden power failure of the storage chip due to drops. Through a hardware-level rapid response mechanism, combined with accurate drop detection and efficient data backup, this invention greatly improves the data security of electronic devices in the event of drops, provides users with a more reliable data protection solution, and significantly enhances user experience and device reliability.

[0059] Please refer to Figure 3In one embodiment of this invention, the composite sensor module 1 is further subdivided into an accelerometer 101 and a gyroscope 102. The accelerometer 101 is connected to the hardware acceleration processing unit 2 and is primarily responsible for acquiring the acceleration of the electronic device in three-dimensional space and transmitting the acquired acceleration to the hardware acceleration processing unit 2 in real time. The gyroscope 102 is also connected to the hardware acceleration processing unit 2 and is used to acquire the rate of change of the electronic device's attitude angle and transmit this data to the hardware acceleration processing unit 2.

[0060] When determining a drop event, the hardware acceleration processing unit 2 employs a hierarchical judgment logic to improve the accuracy and reliability of the judgment. Specifically, a first-level judgment is performed: if the acceleration exceeds 6g and the duration reaches more than 2ms, a preliminary judgment is made that there may be a drop risk. Subsequently, a second-level verification is performed: if the attitude angle change rate exceeds 500° / s², a drop is further confirmed. This hierarchical judgment mechanism combines data from both acceleration and attitude angle change rate dimensions, which can effectively reduce the false judgment rate and ensure the accurate identification of drop events.

[0061] The hardware logic circuit of the hardware acceleration processing unit 2 can achieve real-time judgment at the microsecond level (less than 50μs) with an extremely low false judgment rate of less than 0.1%. This efficient judgment capability enables the system to respond to drop events in a very short time, providing a sufficient time window for subsequent data protection operations.

[0062] In another specific embodiment of this invention, the accelerometer 101 is a triaxial accelerometer, which can comprehensively monitor the acceleration changes of the electronic device in three orthogonal directions, thereby more accurately reflecting the motion state of the device. The accelerometer 101 and the gyroscope 102 are respectively connected to the hardware acceleration processing unit 2 through the SPI interface to ensure high-speed and stable data transmission.

[0063] The hardware acceleration processing unit 2 is a dedicated processing unit, such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application-Specific Integrated Circuit). These dedicated processing units possess powerful parallel processing capabilities and low latency characteristics, enabling them to quickly process large amounts of data from sensors and make timely judgments and responses. By employing an FPGA or ASIC as the hardware acceleration processing unit 2, the drop data emergency protection circuit system of this embodiment can achieve efficient and reliable drop detection and data protection functions, significantly improving the data security and system stability of electronic devices in the event of a drop.

[0064] Please refer to this again. Figure 3In one embodiment of this invention, the emergency data preservation circuit 3 comprises a backup power supply 301 and a non-volatile memory 302. The non-volatile memory 302 is connected to the central processing unit (CPU) of the electronic device. Upon receiving an emergency data protection signal from the hardware acceleration processing unit 2, the CPU controls the non-volatile memory 302 to initiate an emergency backup operation, rapidly writing critical data into the memory, thereby achieving emergency data preservation. This process can be completed in a very short time, ensuring that data is safely stored before a power outage occurs due to a device drop.

[0065] The backup power supply 301 is connected to the non-volatile memory 302, and its main function is to provide stable power support to the non-volatile memory 302 during emergency backup operations. Even if the main power supply suddenly loses power during the drop, the backup power supply 301 can ensure that the non-volatile memory 302 has enough power to complete the data writing operation, avoiding data loss or writing failure due to insufficient power.

[0066] In one specific embodiment of this invention, the backup power supply 301 employs a supercapacitor, such as a 5.5V / 0.1F supercapacitor. This supercapacitor can discharge rapidly in a short time, providing sufficient power support to the non-volatile memory 302 to sustain its write operations for more than 50ms. This duration is sufficient to cover the cache time window before the memory chip is powered off (such as 10-50ms for eMMC memory), ensuring that data can be written completely and safely to the non-volatile memory 302.

[0067] In another specific embodiment of this invention, the non-volatile memory 302 is a ferroelectric memory (i.e., FRAM memory). FRAM memory has advantages such as no erase / write cycle, fast write speed, and high durability. It can complete data writing operations in a very short time and will not reduce the lifespan of the memory due to frequent writing. This characteristic makes it very suitable for emergency data backup scenarios, enabling it to quickly and reliably save critical data in the instant of power loss caused by a device drop, ensuring data integrity and security.

[0068] Through the above design, the emergency data preservation circuit 3 of this embodiment can provide fast and reliable power support and efficient data writing capability when the device is dropped, effectively solving the problem of data loss or damage caused by power failure in the prior art.

[0069] Please refer to Figure 4 In one embodiment of this invention, the data emergency protection circuit system further includes a self-recovery module 4. This self-recovery module 4 is connected to both the composite sensor module 1 and the central processing unit, and is used to trigger the system's self-recovery process after the device has fallen and eventually come to a stop.

[0070] Specifically, when the composite sensor module 1 detects that the acceleration and attitude angle change rate of the electronic device have both returned to normal levels (i.e., the device is stationary), the self-recovery module 4 sends a restart signal to the central processing unit (CPU). Upon receiving this signal, the CPU triggers a device restart. During the restart process, the CPU reads the previously backed-up data from the non-volatile memory 302 in the emergency data backup circuit 3 and performs an integrity check on this backup data against the original data stored in the electronic device's EMMC memory.

[0071] The introduction of this self-recovery mechanism enables the device to automatically return to normal operation after experiencing a drop and completing an emergency data backup. Through integrity verification, the system verifies that the backup data is complete and undamaged, ensuring that the data can be correctly restored during the recovery process. If discrepancies or corruption are found, the system can use the backup data to repair or restore the data, thereby minimizing the impact of drop events on device data and further improving system reliability and user experience.

[0072] In summary, the addition of self-recovery module 4 not only improves the functionality of the drop data emergency protection circuit system, but also enables fully automated processing from drop detection and data backup to system recovery, providing strong support for the rapid recovery of electronic devices after a drop.

[0073] Please refer to this again. Figure 4 In one embodiment of this invention, the data emergency protection circuit system further includes a mechanical locking mechanism 5. This mechanical locking mechanism 5 is electrically connected to the hardware acceleration processing unit 2 and is used to mechanically lock and protect vulnerable parts of the electronic device when the hardware acceleration processing unit 2 determines that a drop has occurred.

[0074] When the hardware acceleration processing unit 2 confirms that the device has fallen by judging the acceleration and attitude angle change rate, it immediately sends a control signal to the mechanical locking mechanism 5. After receiving the signal, the mechanical locking mechanism 5 quickly activates the mechanical locking mechanism to lock and protect the vulnerable parts of the electronic device (such as the display screen, camera, buttons, etc., or more specifically, the print head of the POS machine) (for example, locking the slide rail of the POS machine's print head to prevent mechanical displacement).

[0075] This combination of mechanical locking protection and data protection measures not only effectively protects the data stored inside the device but also provides additional protection for the device's physical structure. Through the rapid response and control of the hardware acceleration processing unit 2, the mechanical locking mechanism 5 can complete the locking action in a very short time, ensuring that vulnerable parts receive timely physical protection during a drop, thereby reducing the possibility of damage from the drop and further improving the device's reliability and durability.

[0076] In summary, the introduction of the mechanical locking mechanism 5 enables the drop data emergency protection circuit system to not only protect data integrity but also protect the physical structure of the device, achieving a dual function of data protection and physical protection, and providing strong support for the comprehensive protection of electronic equipment in the event of a drop.

[0077] Although this application frequently uses terms such as composite sensor module and central processing unit, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0078] Example 2

[0079] This utility model provides an electronic device, including the data emergency protection circuit system as described in Embodiment 1 above.

[0080] By integrating this data emergency protection circuit system, the electronic device provided in this embodiment can not only effectively protect the data integrity in the memory chip during a drop, but also provide additional protection for the device's physical structure, reducing hardware damage caused by drops. This comprehensive protection mechanism greatly enhances the stability and durability of the electronic device in complex usage environments, providing users with a more reliable and secure user experience.

[0081] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A data emergency protection circuit system, applied to electronic equipment, characterized in that, It includes a composite sensor module (1), a hardware acceleration processing unit (2), and a data emergency storage circuit (3). The composite sensor module (1) is connected to the hardware acceleration processing unit (2) and is used to collect acceleration and attitude angle change rate and send them to the hardware acceleration processing unit (2). The hardware acceleration processing unit (2) is connected to the central processing unit of the electronic device and is used to determine whether a fall has occurred based on the received acceleration and the rate of change of attitude angle, and to send a data emergency protection signal to the central processing unit when a fall is determined to have occurred. The data emergency storage circuit (3) is connected to the central processing unit and is used to perform emergency backup and storage of data under the control of the central processing unit after the central processing unit receives the data emergency protection signal.

2. The data emergency protection circuit system according to claim 1, characterized in that, The composite sensor module (1) includes an accelerometer (101) and a gyroscope (102). The accelerometer (101) is connected to the hardware acceleration processing unit (2) for collecting acceleration and sending it to the hardware acceleration processing unit (2). The gyroscope (102) is connected to the hardware acceleration processing unit (2) and is used to collect the attitude angle change rate and send it to the hardware acceleration processing unit (2).

3. The data emergency protection circuit system according to claim 2, characterized in that, The accelerometer (101) is a triaxial accelerometer; The accelerometer (101) and the gyroscope (102) are respectively connected to the hardware acceleration processing unit (2) via the SPI interface.

4. The data emergency protection circuit system according to claim 2, characterized in that, The hardware acceleration processing unit (2) is an FPGA or an ASIC.

5. The data emergency protection circuit system according to claim 4, characterized in that, The emergency data storage circuit (3) includes a backup power supply (301) and a non-volatile memory (302). The non-volatile memory (302) is connected to the central processing unit and is used to perform emergency backup and storage of data under the control of the central processing unit after the central processing unit receives the data emergency protection signal. The backup power supply (301) is connected to the non-volatile memory (302) and is used to supply power to the non-volatile memory (302) during the process of emergency backup and saving of data in the non-volatile memory (302).

6. The data emergency protection circuit system according to claim 5, characterized in that, The backup power supply (301) is a supercapacitor.

7. The data emergency protection circuit system according to claim 5, characterized in that, The non-volatile memory (302) is a ferroelectric memory.

8. The data emergency protection circuit system according to claim 1, characterized in that, It also includes a self-recovery module (4); The self-recovery module (4) is connected to the composite sensor module (1) and the central processing unit respectively. After the composite sensor module (1) detects that the electronic device is in a static state, it sends a restart signal to the central processing unit to trigger the central processing unit to restart and perform integrity verification between the backup data read from the data emergency storage circuit (3) and the data stored in the EMMC memory of the electronic device.

9. The data emergency protection circuit system according to claim 1, characterized in that, It also includes a mechanical locking mechanism (5); The mechanical locking mechanism (5) is connected to the hardware acceleration processing unit (2) and is used to mechanically lock and protect the vulnerable parts of the electronic device under the control of the hardware acceleration processing unit (2) when the hardware acceleration processing unit (2) determines that a drop has occurred.

10. An electronic device, characterized in that, Includes a data emergency protection circuit system as described in any one of claims 1-9.

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