An emergency rescue terminal for campus security that prevents human-caused damage and a multi-dimensional data encryption upload method

Abstract

This invention discloses an emergency rescue terminal for campus security, designed to prevent sabotage, and a multi-dimensional data encryption and uploading method. The terminal includes a main control unit, emergency triggering and locking mechanism, audio acquisition, positioning, motion monitoring, Wi-Fi scanning, encryption, storage, and power module. Upon SOS triggering, the core functions are automatically locked, and can only be unlocked remotely by a pre-set contact person, while a backup power supply is activated. The terminal simultaneously collects on-site audio, motion status, surrounding Wi-Fi, and GPS / BeiDou data, which are then encrypted and uploaded to a security platform. Motion status analysis can determine the level of danger and trigger a priority response; combined with GPS and Wi-Fi dual positioning, accurate indoor and outdoor tracing is ensured. This invention, through function locking and multi-dimensional data encryption, effectively prevents the device from being forced to shut down or its data from being tampered with, providing complete evidence and decision support for campus security incidents.

Description

Technical Field

[0001] This invention belongs to the field of mobile communication terminal technology, specifically relating to an emergency rescue terminal for campus safety that is protected against human-caused damage and a multi-dimensional data encryption and uploading method. Background Technology

[0002] Currently, campus safety incidents, especially school bullying, are receiving increasing attention from society. To ensure student safety, various campus emergency rescue devices have emerged, mainly including smartwatches, campus emergency bracelets, and emergency call devices. The core technology of existing devices focuses on the basic functions of "one-click SOS - phone dialing - location upload." The hardware mainly includes a main control chip, a communication module (2G / 4G LTE), a positioning module (GPS / BeiDou), an SOS trigger button, and a power module. Some devices also integrate simple recording functions. Their working principle is as follows: after a student presses the SOS button, the device uses the communication module to repeatedly dial preset emergency numbers (such as parents' or teachers' phone numbers) while simultaneously uploading location data to a designated platform.

[0003] However, existing technologies have the following drawbacks in practical applications:

[0004] The device is weak in preventing sabotage. Core distress functions such as recording and location tracking can be manually disabled or turned off by the user. In cases of school bullying, perpetrators often coerce students into disabling these functions, rendering the distress call ineffective. Furthermore, the current technology lacks a mandatory locking mechanism, failing to guarantee the continuity of data collection in emergency situations.

[0005] The on-site information collection is limited in scope. Existing equipment can only perform basic phone calls and location uploads, lacking simultaneous collection of on-site audio, movement status, and environmental characteristics. This makes it difficult for the school's safety center to fully reconstruct the situation, impacting the effectiveness of rescue decisions.

[0006] The assessment of hazard levels lacks a basis. Existing equipment does not integrate motion monitoring modules and sophisticated algorithms, making it impossible to determine the intensity of danger based on dynamic changes on-site (such as large-scale shaking caused by physical conflict). Rescue responses lack prioritization and are inefficient.

[0007] The accuracy of positioning and tracing is insufficient. Existing equipment relies solely on GPS / BeiDou positioning, resulting in significant positioning errors in indoor campus environments or in scenarios with numerous obstructions. Furthermore, it does not utilize environmental Wi-Fi information to assist in positioning and tracing, which is detrimental to subsequent investigation and evidence collection. Summary of the Invention

[0008] The purpose of this invention is to provide an emergency rescue terminal for campus security that is protected against human-caused damage and a multi-dimensional data encryption and uploading method, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: an emergency rescue terminal for campus security to prevent human-caused damage, comprising:

[0010] The main control module is used to repeatedly dial preset emergency numbers after SOS is triggered, and to control the coordinated operation of various modules.

[0011] The emergency triggering and locking module includes a physical SOS button and a locking unit. The locking unit locks the recording, positioning and data uploading functions after the SOS is triggered, and can only be unlocked by remote commands from a preset emergency contact.

[0012] The audio acquisition module is used to force activation and continuously record on-site audio in emergency situations;

[0013] The positioning module is used to collect the terminal's geographical location data in real time;

[0014] The motion status monitoring module includes a triaxial sensor for collecting motion data from the terminal.

[0015] The WIFI scanning module is used to collect the MAC address information of surrounding WIFI hotspots;

[0016] The encryption module is used to encrypt the collected audio, location, motion status, and WIFI data.

[0017] The storage module is used to cache encrypted data;

[0018] The power module includes a main power supply and a backup power supply, wherein the backup power supply is used to maintain the operation of core functions when the main power supply is disconnected.

[0019] Preferably, the motion state monitoring module includes a three-axis accelerometer and a three-axis gyroscope, and the main control module has a built-in precision algorithm for identifying the danger level based on the collected motion data.

[0020] Preferably, the precision algorithm includes:

[0021] Kalman filtering was performed on the acceleration and angular velocity data for preprocessing.

[0022] Calculate the difference between the peak and trough values ​​of acceleration per unit time, and define a difference ≥ 3g as a "significant change";

[0023] The risk level is determined by the number of significant changes within 10 seconds, classifying the risk as low, medium, or high.

[0024] Embed the hazard level indicator into the uploaded data packet.

[0025] Preferably, the WIFI scanning module collects the MAC address, signal strength, and hotspot name of surrounding WIFI hotspots, which together with the GPS / BeiDou positioning data collected by the positioning module constitute positioning traceability information.

[0026] Preferably, the encryption module uses a national-level encryption algorithm to encrypt the collected data across the entire chain and generates a data integrity verification code.

[0027] Preferably, the locking unit locks the core function through software logic and works in conjunction with the hardware power-off protection of the backup power module to ensure that the function cannot be deactivated by local operation after SOS is triggered.

[0028] A multi-dimensional data encryption and uploading method, applied to the aforementioned campus security emergency rescue terminal designed to prevent human-caused damage, includes the following steps:

[0029] In response to the SOS trigger signal, the main control module enters the function lock state, locking the recording, positioning and data upload functions, while activating the backup power supply;

[0030] The audio acquisition module is forced to start recording, continuously capturing on-site audio and caching it to the storage module;

[0031] The positioning module collects the terminal's geographical location data in real time;

[0032] The motion status monitoring module collects motion data from the terminal, and the main control module runs a sophisticated algorithm to analyze and process the motion data.

[0033] The WIFI scanning module collects the MAC address information of surrounding WIFI hotspots;

[0034] The encryption module encrypts audio data, location data, motion state analysis results, and WIFI MAC addresses.

[0035] The communication module uploads the encrypted data to the school's security center platform and cloud storage server. If the network is interrupted, the encrypted data is cached in the storage module and automatically re-uploaded after the network is restored.

[0036] If the preset emergency contact answers the phone and receives the remote unlock command, the main control module will unlock its functions.

[0037] Preferably, the step of the main control module running a precision algorithm to analyze and process the motion data includes:

[0038] Kalman filtering was performed on the collected triaxial acceleration and triaxial angular velocity data for preprocessing.

[0039] Calculate the difference between the peak and trough values ​​of acceleration per unit time, and define a difference ≥ 3g as a "significant change";

[0040] The danger level is determined by the number of times the risk changes drastically within 10 seconds:

[0041] If 1-2 significant changes are detected within 10 seconds, the risk level is determined to be low.

[0042] If 3-5 significant changes are detected within 10 seconds, the risk level is determined to be medium.

[0043] If ≥6 large changes are detected within 10 seconds or a single acceleration difference is ≥5g, it is judged as a high-risk level.

[0044] Embed the hazard level indicator into the data packet to be uploaded.

[0045] Preferably, the unlock command is sent by a preset emergency contact after a phone call is connected, and the main control module receives and verifies the command before unlocking the function.

[0046] Preferably, the unlocking command includes a voice command or an APP scanning command.

[0047] Compared with the prior art, the beneficial effects of the present invention are:

[0048] This invention utilizes an emergency trigger and lock module to automatically lock the recording, location, and data upload functions upon SOS triggering. These functions cannot be manually unlocked locally; they can only be unlocked remotely by a pre-set emergency contact. Simultaneously, a backup power module automatically maintains core functions when the main power supply is disconnected, preventing forced shutdown or power loss and ensuring a continuous and reliable distress call process.

[0049] This invention utilizes an audio acquisition module, a motion monitoring module, a Wi-Fi scanning module, and a positioning module to simultaneously collect on-site audio, motion status data, surrounding Wi-Fi hotspot information, and GPS / BeiDou positioning data upon SOS triggering, thus reconstructing the on-site situation from multiple dimensions. Authorized personnel can decrypt the cloud-stored data to obtain complete recordings, location trajectories, motion status analysis results, and Wi-Fi MAC address information, providing comprehensive evidence for rescue and investigation.

[0050] This invention uses a triaxial sensor in the motion monitoring module to collect angular velocity and acceleration data of the device in real time. The main control module has a built-in precision algorithm to analyze the motion data. This algorithm uses Kalman filtering for data preprocessing, calculates the difference between the peak and trough values ​​of acceleration per unit time, and determines the hazard level (low, medium, or high) based on the number of "significant changes" (difference ≥ 3g) within 10 seconds. The hazard level identifier is then embedded in the uploaded data packet. A high hazard level can trigger the priority response mechanism of the school safety center platform, improving rescue efficiency.

[0051] This invention employs a dual positioning and tracing scheme combining GPS / BeiDou positioning with WIFI MAC address acquisition. The positioning module collects location data in real time, while the WIFI scanning module simultaneously collects the MAC addresses, signal strength, and names of surrounding WIFI hotspots. In indoor environments or other scenarios with weak GPS signals, the positioning range can be narrowed down using environmental WIFI information; combined with a campus WIFI deployment map, the specific area where the incident occurred can be accurately located, providing crucial clues for incident tracing.

[0052] This invention employs a hardware encryption chip and a national-level encryption algorithm to perform end-to-end encrypted transmission and storage of data such as audio, location, motion status analysis results, and WIFI MAC addresses, and generates a data integrity verification code. The encrypted data can only be decrypted and viewed by authorized parties, balancing data integrity and privacy protection to prevent information leakage or tampering. Attached Figure Description

[0053] Figure 1 This is a flowchart illustrating the process of the terminal of this invention.

[0054] Figure 2 This is a flowchart illustrating the motion state monitoring module of the present invention.

[0055] Figure 3 This is a flowchart illustrating the precision algorithm of this invention.

[0056] Figure 4 This is a flowchart illustrating the WIFI scanning module of the present invention.

[0057] Figure 5 This is a flowchart illustrating the encryption module of the present invention.

[0058] Figure 6 This is a flowchart illustrating the locking unit of the present invention.

[0059] Figure 7 This is a flowchart illustrating the multi-dimensional data encryption and uploading method of the present invention.

[0060] Figure 8 This is a flowchart illustrating the main control module of the present invention.

[0061] Figure 9 This is a schematic diagram of the first type of unlocking command of the present invention.

[0062] Figure 10 This is a schematic diagram of the second type of unlocking command of the present invention. Detailed Implementation

[0063] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0064] Example 1:

[0065] An emergency distress signal terminal for campus security, designed to prevent vandalism, includes:

[0066] The main control module is used to repeatedly dial preset emergency numbers after SOS is triggered, and to control the coordinated operation of various modules.

[0067] The emergency trigger and lock module includes a physical SOS button and a locking unit. After SOS is triggered, the locking unit locks the recording, location and data upload functions, and can only be unlocked by remote commands from a preset emergency contact.

[0068] The audio acquisition module is used to force activation and continuously record on-site audio in emergency situations;

[0069] The positioning module is used to collect the terminal's geographical location data in real time;

[0070] The motion status monitoring module includes a triaxial sensor for collecting motion data from the terminal.

[0071] The WIFI scanning module is used to collect the MAC address information of surrounding WIFI hotspots;

[0072] The encryption module is used to encrypt the collected audio, location, motion status, and WIFI data.

[0073] The storage module is used to cache encrypted data;

[0074] The power module includes a main power supply and a backup power supply. The backup power supply maintains core functions when the main power supply is disconnected. The motion monitoring module includes a three-axis accelerometer and a three-axis gyroscope. The main control module incorporates a sophisticated algorithm to identify the level of danger based on the collected motion data. The sophisticated algorithm includes:

[0075] Kalman filtering was performed on the acceleration and angular velocity data for preprocessing.

[0076] Calculate the difference between the peak and trough values ​​of acceleration per unit time, and define a difference ≥ 3g as a "significant change";

[0077] The risk level is determined by the number of significant changes within 10 seconds, classifying the risk as low, medium, or high.

[0078] The hazard level indicator is embedded in the uploaded data packet. The WIFI scanning module collects the MAC address, signal strength, and hotspot name of surrounding WIFI hotspots, which, together with the GPS / BeiDou positioning data collected by the positioning module, constitutes the location tracing information. The encryption module uses a national-level encryption algorithm to encrypt the collected data throughout the entire link and generates a data integrity verification code. The locking unit locks the core functions through software logic and, in conjunction with the hardware power-off protection of the backup power module, ensures that the functions cannot be deactivated by local operation after an SOS is triggered.

[0079] A multi-dimensional data encryption upload method, applied to a campus security emergency rescue terminal to prevent human-caused damage, includes the following steps:

[0080] In response to the SOS trigger signal, the main control module enters the function lock state, locking the recording, positioning and data upload functions, while activating the backup power supply;

[0081] The audio acquisition module is forced to start recording, continuously capturing on-site audio and caching it to the storage module;

[0082] The positioning module collects the terminal's geographical location data in real time;

[0083] The motion status monitoring module collects motion data from the terminal, and the main control module runs a sophisticated algorithm to analyze and process the motion data.

[0084] The WIFI scanning module collects the MAC address information of surrounding WIFI hotspots;

[0085] The encryption module encrypts audio data, location data, motion state analysis results, and WIFI MAC addresses.

[0086] The communication module uploads the encrypted data to the school's security center platform and cloud storage server. If the network is interrupted, the encrypted data is cached in the storage module and automatically re-uploaded after the network is restored.

[0087] If the preset emergency contact answers the phone and receives the remote unlock command, the main control module will unlock its functions. The main control module's steps for analyzing and processing motion data using sophisticated algorithms include:

[0088] Kalman filtering was performed on the collected triaxial acceleration and triaxial angular velocity data for preprocessing.

[0089] Calculate the difference between the peak and trough values ​​of acceleration per unit time, and define a difference ≥ 3g as a "significant change";

[0090] The danger level is determined by the number of times the risk changes drastically within 10 seconds:

[0091] If 1-2 significant changes are detected within 10 seconds, the risk level is determined to be low.

[0092] If 3-5 significant changes are detected within 10 seconds, the risk level is determined to be medium.

[0093] If ≥6 large changes are detected within 10 seconds or a single acceleration difference is ≥5g, it is judged as a high-risk level.

[0094] The hazard level indicator is embedded in the data packet to be uploaded. The unlock command is sent by the preset emergency contact after a phone call is connected. The main control module receives and verifies the command before unlocking the function. Unlock commands can be voice commands or QR code scan commands via the app.

[0095] Through the above technical solution, this invention, via an emergency triggering and locking module, automatically locks core functions such as recording, location tracking, and data uploading upon SOS triggering. The victim cannot manually unlock the device via buttons or the user interface; it can only be unlocked remotely via command after a pre-set emergency contact answers the call. Simultaneously, a backup power module automatically maintains core functions when the main power is disconnected, technically eliminating the risk of the perpetrator coercing the device to shut down or forcibly cutting off power, thus ensuring the continuity of the distress call process.

[0096] This invention integrates an audio acquisition module, a motion monitoring module, a WIFI scanning module, and a positioning module. Upon SOS triggering, it simultaneously collects on-site audio, motion status data, surrounding WIFI hotspot information, and GPS / BeiDou positioning data, reconstructing the scene of school bullying from multiple dimensions. Authorized personnel can decrypt cloud-stored data to obtain complete recordings, location trajectories, motion status analysis results, and WIFI MAC address information, providing a complete basis for rescue decisions and subsequent investigations.

[0097] This invention uses a triaxial sensor in the motion monitoring module to collect angular velocity and acceleration data of the device in real time. The main control module has a built-in precision algorithm to analyze and process the motion data. This algorithm uses Kalman filtering for data preprocessing, calculates the difference between the peak and trough values ​​of acceleration per unit time, and determines low, medium, and high hazard levels based on the number of "significant changes" (difference ≥ 3g) within 10 seconds. The hazard level identifier is then embedded in the uploaded data packet. A high hazard level can trigger the school safety center platform's priority response mechanism (pop-up window, audible alarm, SMS notification), significantly improving rescue efficiency.

[0098] This invention employs a dual positioning and tracing scheme combining GPS / BeiDou positioning with WIFI MAC address acquisition. The positioning module collects location data such as latitude, longitude, and altitude in real time, while the WIFI scanning module simultaneously collects the MAC addresses, signal strength, and names of nearby detectable WIFI hotspots. Even in indoor environments with weak GPS signals, the positioning range can be narrowed down using environmental WIFI information. The encrypted uploaded WIFI MAC addresses, combined with a campus WIFI deployment map, can accurately pinpoint the specific area where the incident occurred (e.g., a classroom in a teaching building, or a specific area on the playground), providing crucial clues for incident tracing.

[0099] This invention employs a hardware encryption chip and a national-level encryption algorithm to perform end-to-end encrypted transmission and storage of sensitive data such as audio data, location data, motion status analysis results, and WIFI MAC addresses, and generates a data integrity verification code. The encrypted data can only be viewed by authorized parties (emergency contacts, school security centers, and judicial authorities) using the decryption key, balancing data integrity with student privacy protection and preventing information leakage or tampering.

[0100] Example 2:

[0101] In this embodiment, the campus security emergency rescue terminal designed to prevent human-caused damage has a main control module that, after SOS is triggered, will repeatedly dial preset emergency numbers and coordinate with other modules to work together.

[0102] The terminal includes an emergency trigger and lock module, which features a physical SOS button and a locking unit. When the physical SOS button is triggered, the locking unit activates, forcibly locking the recording, location tracking, and data upload functions. In the locked state, the user cannot manually disable these functions via any button or interface on the terminal. The locked state can only be lifted by a pre-designated emergency contact sending a specific remote command after a distress call is connected.

[0103] The audio acquisition module is forcibly activated in an emergency, continuously recording audio information from the scene. The positioning module operates simultaneously, acquiring the terminal's current geographical location data in real time. The motion monitoring module, with its built-in triaxial sensor, collects the terminal's motion data in space, such as changes in acceleration and angular velocity. The Wi-Fi scanning module is activated, beginning to collect the MAC address information of detectable Wi-Fi hotspots in the terminal's surrounding environment.

[0104] The encryption module encrypts all the collected data, including audio data, geolocation data, motion status data, and Wi-Fi hotspot information. The storage module temporarily caches this encrypted data, awaiting uploading.

[0105] The power module provides power to the terminal and includes a main power supply and a backup power supply. When the main power supply is disconnected for any reason, the backup power supply will automatically take over to ensure that the core functions of the terminal can continue to operate and prevent the distress call process from being interrupted due to power failure.

[0106] Through the cooperation of the aforementioned modules, this terminal establishes a mandatory data collection and upload link upon emergency triggering. A locking mechanism prevents malicious shutdown of functions, and multi-dimensional data collection provides more comprehensive information for reconstructing the scene. Motion status data can be used to analyze the intensity of on-site activities, and Wi-Fi information can assist in positioning when satellite signals are weak. All sensitive data is encrypted to ensure information security. The backup power supply further enhances the terminal's reliability in abnormal situations.

[0107] Example 3:

[0108] The motion monitoring module in this embodiment includes a three-axis accelerometer and a three-axis gyroscope. The three-axis accelerometer measures the linear acceleration changes of the terminal in three orthogonal directions. The three-axis gyroscope measures the angular velocity changes of the terminal around three orthogonal axes. These two sensors work together to comprehensively collect the terminal's motion data in space, including dynamic information such as shaking, falling, and rapid movement.

[0109] The main control module incorporates a sophisticated algorithm to process the raw data acquired by the motion monitoring module. This algorithm first preprocesses the data output from the triaxial accelerometer and triaxial gyroscope. The preprocessing uses a Kalman filter to eliminate sensor noise and random interference, resulting in a smooth and reliable motion data sequence.

[0110] After preprocessing, the algorithm extracts and analyzes features from the acceleration data. Specifically, the algorithm calculates the difference between the peak and trough values ​​of the synthetic acceleration within a unit time window. This difference reflects the intensity of the terminal's movement within a short period. The algorithm sets a threshold; when the calculated difference reaches or exceeds this threshold, it determines that a "significant change" event has occurred within that time period.

[0111] The algorithm counts the number of "significant change" events occurring within a set time period. Based on the range of these counts, the algorithm categorizes the terminal's motion state into different risk levels. For example, a low risk level is defined as a low count, a medium risk level as a middle count, and a high risk level as a high count. The risk level classification logic is pre-set and embedded in the main control module.

[0112] After the emergency distress terminal is triggered and enters working mode, the motion monitoring module begins to continuously collect data. The sophisticated algorithm within the main control module runs in real time, performing the aforementioned processing and analysis on the collected motion data. Based on the real-time analysis results, the algorithm dynamically determines the current level of danger.

[0113] The main control module identifies the hazard level information and processes it along with other collected data. This hazard level identifier is embedded in the data packet to be uploaded. When the data is uploaded to the school safety center or relevant platform, the platform can adopt differentiated response strategies based on the hazard level identifier in the data packet. For example, for events identified as high-risk, the platform can activate a priority response mechanism to improve the efficiency of rescue and handling.

[0114] Through the combination of the above modules and algorithms, the distress terminal in this embodiment can automatically identify the intensity of potential dangers based on physical motion characteristics, providing auxiliary judgment basis for subsequent rescue decisions.

[0115] Example 4:

[0116] The motion state monitoring module in this embodiment includes a three-axis accelerometer and a three-axis gyroscope. The main control module has a built-in precision algorithm to identify the danger level based on the collected motion data.

[0117] First, the acceleration and angular velocity data are preprocessed using Kalman filtering. The triaxial accelerometer and triaxial gyroscope continuously acquire motion data from the terminal; this raw data contains random errors caused by sensor noise or minor environmental disturbances. The Kalman filtering algorithm is applied to these data streams. Through a cyclical prediction and update process, the algorithm effectively estimates and filters out noise components from the data, resulting in a smoother and more accurate acceleration and angular velocity sequence. This preprocessing step provides a reliable data foundation for subsequent precise calculations.

[0118] Secondly, the algorithm calculates the difference between the peak and trough values ​​of acceleration per unit time, defining a difference greater than or equal to 3g as a "significant change." After data preprocessing, the algorithm analyzes the filtered acceleration data. Specifically, within a preset time window, such as 1 second, the algorithm finds the maximum and minimum acceleration values. The difference between these two values ​​is calculated, reflecting the severity of the terminal's acceleration change during that time period. According to the laws of physics, when a terminal experiences violent shaking, throwing, or impact, its acceleration changes significantly. Therefore, the algorithm sets a threshold: when the calculated difference between the peak and trough acceleration reaches or exceeds 3 times the gravitational acceleration, a "significant change" is determined to have occurred within that time period. This change is associated with violent behaviors such as physical conflict, theft, or being thrown.

[0119] Next, the number of significant changes within 10 seconds is used to determine the danger level into low, medium, and high. The algorithm continuously monitors and records the occurrence of "significant changes." Within a 10-second rolling time window, the algorithm counts the total number of "significant changes" that occur within that window. Based on the range of the counted number, the danger level of the scene is divided into three levels. For example, when the number of significant changes within 10 seconds is below a certain value, it is determined to be a low-risk level, which may correspond to general pushing or slight movement of equipment. When the number is in an intermediate range, it is determined to be a medium-risk level, which may correspond to continuous pulling or relatively intense physical contact. When the number exceeds a high threshold, it is determined to be a high-risk level, which strongly suggests that a serious beating, robbery, or repeated smashing of equipment may have occurred. This classification method provides a quantitative basis for rescue response.

[0120] Finally, the hazard level identifier is embedded in the uploaded data packet. After determining the hazard level, the main control module generates an identifier representing the current hazard level. This identifier is embedded in the data packet to be uploaded via the encryption module in real time. This data packet also contains encrypted audio, location, and Wi-Fi scan information. When the data packet is transmitted to the school security center platform or the terminal of the preset emergency contact, the receiving system can immediately parse the hazard level identifier. A high-hazard level identifier can trigger the platform's priority response mechanism, such as displaying a prominent pop-up on the monitoring screen, emitting a higher frequency alarm sound, or automatically sending notification SMS messages to more safety personnel, thereby achieving priority dispatch and rapid intervention of rescue resources.

[0121] Example 5:

[0122] In this embodiment, the WIFI scanning module works in conjunction with the positioning module to jointly constitute location and traceability information. When the terminal initiates an emergency distress call, the WIFI scanning module immediately begins operation. This module continuously scans the wireless network signals in the terminal's surrounding environment, detecting and capturing accessible WIFI hotspots. For each detected WIFI hotspot, the module collects its specific hardware identifier, i.e., its MAC address. Simultaneously, the module also records the received signal strength of the hotspot at the current terminal location, as well as the network name broadcast by the hotspot.

[0123] The information collected by the WIFI scanning module is combined with the satellite positioning data obtained by the positioning module to form a composite location tracing information. The positioning module receives signals from the GPS or BeiDou satellite system and analyzes the terminal's current latitude and longitude coordinates, altitude, and timestamp. In open outdoor environments, satellite positioning data can provide a relatively accurate geographical location.

[0124] However, inside campus buildings, in corridors, basements, or in densely wooded outdoor areas, satellite signals may be severely blocked or attenuated, leading to significant errors in the data acquired by the positioning module, or even preventing the acquisition of a valid location. In these situations, the data collected by the Wi-Fi scanning module plays a crucial role. Each Wi-Fi hotspot's MAC address is globally unique, and its signal strength reflects the approximate distance between the terminal and the hotspot's transmitter. By acquiring the MAC addresses of multiple surrounding hotspots and their corresponding signal strengths, the relative network environment characteristics of the terminal can be depicted.

[0125] This composite information is encrypted and uploaded to a secure platform. The platform can then perform comparative analysis using a pre-recorded campus Wi-Fi network deployment map. The map records the MAC addresses and expected coverage areas of Wi-Fi hotspots deployed in various areas of the campus, such as different floors of teaching buildings, different classrooms, the library, and the sports field stands. By matching the list of hotspot MAC addresses and signal strength uploaded by the terminal with the deployment map, even in cases of satellite positioning failure or insufficient accuracy, the terminal's location can be pinpointed to a specific building, floor, or even room, thereby achieving precise location and tracing of the incident.

[0126] Example 6:

[0127] In this embodiment, the encryption module works in conjunction with the main control module, audio acquisition module, positioning module, motion monitoring module, WIFI scanning module, and storage module. When the emergency triggering and locking module is activated, the main control module controls each data acquisition module to start working, and the encryption module then initiates its encryption process.

[0128] The core component of the encryption module is an independent hardware encryption chip. This chip internally contains a national-level encryption algorithm that conforms to the standards of the State Cryptography Administration. After the terminal enters an emergency state, the on-site audio data recorded by the audio acquisition module, the geographical location data obtained by the positioning module, the motion data collected by the motion status monitoring module through a three-axis sensor, and the MAC address information of surrounding WIFI hotspots collected by the WIFI scanning module are all transmitted to the encryption module in real time.

[0129] The encryption module performs end-to-end encryption on all received data. Specifically, it uses its built-in national-level encryption algorithm to perform real-time encryption on audio data streams, location data packets, motion status data sequences, and Wi-Fi information lists. This encryption process covers the entire path from data generation to final storage or upload, ensuring that data remains encrypted throughout its transmission and processing within the terminal, preventing unauthorized interception or eavesdropping within the device.

[0130] While performing the encryption operation, the encryption module generates a corresponding data integrity check code for each group or time period of encrypted data packets. This check code is generated based on a specific cryptographic hash function, whose input is either the original collected data or the encrypted data, and whose output is a fixed-length unique check value. This check code is then bound to the encrypted data packet.

[0131] The encrypted data packets, along with an integrity checksum, are then sent to the storage module for caching. The storage module temporarily stores this encrypted data, waiting for the communication link to be established before uploading it to the cloud server. The encryption remains intact throughout the data upload process to the cloud or subsequent download by an authorized party.

[0132] When authorized emergency contacts, school safety centers, or law enforcement agencies need to view the data, they must decrypt the encrypted data using the corresponding decryption key. Simultaneously, the recipient can recalculate the checksum using the same algorithm generated by the encryption module. By comparing the recalculated checksum with the original checksum included in the data packet, it can be verified whether the data has been tampered with during transmission and storage. If the checksums match, the data is intact; if they do not match, the data may have been corrupted, and the system will issue a data integrity alert.

[0133] By employing hardware encryption chips and national-level encryption algorithms to implement end-to-end encryption, and in conjunction with a data integrity check code generation and verification mechanism, this embodiment ensures the confidentiality and immutability of sensitive on-site information collected by the distress terminal, providing a reliable and secure data foundation for incident tracing and investigation in a complex campus environment.

[0134] Example 7:

[0135] In this embodiment, the locking unit locks the core functions through software logic and, in conjunction with the hardware power-off protection of the backup power module, ensures that the functions cannot be unlocked locally after an SOS is triggered. When the physical SOS button is triggered, the locking unit immediately activates its software locking logic. This logic is executed by the firmware program within the main control module, and its core lies in modifying the function control flags inside the device and disabling all software interfaces related to local unlocking. Specifically, the locking unit takes over control of the audio acquisition module, positioning module, motion monitoring module, WIFI scanning module, and data upload channel. In the locked state, any function disable buttons on the device's operating interface and related options in the settings menu are blocked by the program logic and become invalid. Users cannot stop recording, disable positioning, interrupt data upload, or deactivate the emergency status through the touchscreen, physical auxiliary buttons, or any local human-machine interaction method on the device. This lock is unidirectional and can only be unlocked by preset, verified remote commands.

[0136] The software locking logic of the locking unit works in conjunction with the hardware protection mechanism of the backup power module to form a dual guarantee. The backup power module is automatically activated when the main power is physically cut off or the battery is forcibly removed. It contains independent power management circuitry and energy storage components, enabling it to seamlessly power the core functional components of the device immediately after the main power is disconnected. These core functional components include the main control module, emergency triggering and locking module, audio acquisition module, positioning module, encryption module, and necessary communication units. The intervention of the backup power ensures that even if the device casing is opened or the main battery is removed, the data acquisition and uploading functions locked by the software logic will not stop due to power failure. The software lock prevents unlocking through normal operating paths, while the hardware power failure protection prevents unlocking through forced power supply damage.

[0137] The entire locking and protection process ensures that the critical functions of the distress terminal continue to operate without local interference throughout the entire cycle from SOS triggering to event handling completion. Only when a pre-set emergency contact, such as the school safety center platform or a parent, sends a specific, encrypted, and verified remote unlocking command to the device via a secure communication link after receiving a distress call, will the main control module instruct the locking unit to release the software logic lock and restore the device's local operating functions. This design technically eliminates the possibility of the device's functions being manually shut down by on-site personnel or interrupted by power disruption in an emergency, thus forcibly guaranteeing the continuity of data acquisition and the reliability of distress signal transmission.

[0138] Example 8:

[0139] The multi-dimensional data encryption and uploading method provided in this embodiment is applied to a campus security emergency rescue terminal designed to prevent human-caused damage. In response to an SOS trigger signal, the main control module initiates a function lock state. This state locks the recording, location, and data uploading functions, preventing them from being manually turned off or interrupted through any operation on the terminal. Simultaneously, the backup power supply is activated to provide power support to the main control module and subsequent functional modules, ensuring that core functions continue to operate even if the main power supply is cut off.

[0140] The audio acquisition module forcibly starts the recording function, continuously capturing audio information from the surrounding environment. The acquired audio data is cached in real time in the storage module, forming a continuous recording file.

[0141] The positioning module starts working, collecting the terminal's current geographical location data in real time, including latitude and longitude coordinates and altitude information.

[0142] The motion monitoring module starts synchronously, collecting motion data of the terminal in three-dimensional space, such as acceleration and angular velocity. The main control module runs a built-in sophisticated algorithm to analyze and process this raw motion data. The algorithm first filters the data, then calculates the difference between the peak and trough values ​​of acceleration per unit time, and determines the danger level corresponding to the current motion state, such as low, medium, or high, based on the number of times this difference exceeds a specific threshold within a preset time.

[0143] The WIFI scanning module is enabled to collect information on detectable WIFI hotspots in the surrounding environment of the terminal. This information includes at least the MAC address of the hotspot.

[0144] The encryption module encrypts the audio data, location data, motion state analysis results, and MAC address information of the Wi-Fi hotspot generated in the above steps. The encryption process is completed using a hardware encryption chip and a specific encryption algorithm to ensure the confidentiality and integrity of the data.

[0145] The communication module uploads the encrypted data packets to the school's security center platform and cloud storage server. If a network interruption occurs during the upload process, the encrypted data will be temporarily cached in the storage module. Once the network connection is restored, the communication module will automatically re-upload the cached encrypted data to the target server.

[0146] If the preset emergency contact answers the distress call made by the terminal and sends a remote unlock command, the main control module will unlock the function and restore the terminal to normal operation mode upon receiving the command.

[0147] Example 9:

[0148] In this embodiment, the main control module runs a sophisticated algorithm to analyze and process the motion data. The triaxial sensor in the motion state monitoring module continuously collects motion data from the terminal, including triaxial acceleration and angular velocity information. The main control module first performs Kalman filtering preprocessing on the raw triaxial acceleration and angular velocity data. Kalman filtering is an optimization estimation algorithm that effectively filters out random noise in the sensor data, resulting in a smoother and more accurate motion state sequence, providing a reliable data foundation for subsequent analysis.

[0149] After data preprocessing, the algorithm enters the feature extraction stage. The main control module calculates the difference between the peak and trough values ​​of acceleration per unit time. This difference reflects the drastic change in the terminal's acceleration over a short period. The algorithm defines a "significant change" as a difference greater than or equal to 3g. This "significant change" is a key indicator for identifying potential severe external forces affecting the terminal (such as being snatched, thrown, or involved in physical conflict with the wearer).

[0150] Based on the extracted "significant change" feature, the algorithm performs a hazard level determination. The main control module counts the number of "significant changes" detected within a 10-second time window and classifies them according to preset rules. The specific determination rules are as follows: if 1 to 2 significant changes are detected within 10 seconds, the current state is determined to be low hazard level; if 3 to 5 significant changes are detected within 10 seconds, the current state is determined to be medium hazard level; if 6 or more significant changes are detected within 10 seconds, or if an extreme event with a single acceleration difference greater than or equal to 5g is detected, it is directly determined to be high hazard level. This classification mechanism can quantify the intensity of the dynamics on site.

[0151] Finally, the main control module embeds the hazard level identifier obtained from the above analysis into the data packet to be uploaded. This identifier, as part of the motion state analysis results, is sent to the encryption module along with other data such as audio and location. After receiving the data on the school safety center platform, the hazard level identifier can be used to trigger different levels of response mechanisms. For example, a high-hazard level can initiate a priority alarm process, thereby making the dispatch of rescue resources more targeted and timely. The entire analysis and processing process is completed automatically by the main control module without manual intervention, ensuring the objectivity and immediacy of hazard state assessment in emergency situations.

[0152] Example 10:

[0153] This embodiment of the multi-dimensional data encryption and uploading method relates to a specific implementation method for remotely unlocking the function lock by a preset emergency contact after the emergency distress terminal is triggered. This method is applied to a campus safety emergency distress terminal with anti-vandalism capabilities, which integrates a main control module, an audio acquisition module, a positioning module, a motion monitoring module, a WIFI scanning module, an encryption module, a communication module, and a storage module.

[0154] Upon receiving an SOS trigger signal, the main control module immediately enters a function lockout state. This state locks the recording, positioning, and data upload functions, preventing them from being manually disabled or interrupted via any physical buttons or software interface on the terminal. Simultaneously, the backup power supply is activated, providing power to the main control module and the aforementioned core functional modules, ensuring the entire data acquisition and processing process continues to operate even if the main power supply is unexpectedly disconnected.

[0155] In the function-locked state, the audio acquisition module is forcibly activated, continuously recording sounds from the surrounding environment and caching the generated audio data to the storage module in real time. The positioning module works synchronously, continuously collecting the terminal's current latitude, longitude, altitude, and other geographical location data. The motion monitoring module collects the terminal's motion data through built-in sensors, and the main control module runs sophisticated algorithms to analyze and process this motion data to assess changes in the surrounding motion state. The Wi-Fi scanning module collects information such as the MAC address and signal strength of detectable Wi-Fi hotspots in the vicinity of the terminal.

[0156] The encryption module encrypts the audio data, location data, motion analysis results, and Wi-Fi MAC address information generated by the audio acquisition module, positioning module, motion monitoring module, and Wi-Fi scanning module. The communication module is responsible for uploading the encrypted data to the school's security center platform and cloud storage server. If a network interruption occurs during the upload process, the encrypted data will be temporarily cached in the storage module. Once the network connection is restored, the communication module will automatically perform the data retransmission operation.

[0157] During the aforementioned function lockout period, if a pre-set emergency contact (such as a parent or designated school safety officer) answers a distress call made by the terminal, the unlocking process is initiated. The emergency contact sends a specific remote unlocking command to the terminal via the telephone communication link. The main control module receives this unlocking command through the communication module.

[0158] Upon receiving an unlock command, the main control module first verifies it. The verification process includes checking the command's format, the legitimacy of its source, and its compatibility with the preset unlock key. Only unlock commands that pass verification are considered valid. After successful verification, the main control module immediately performs the unlock operation, terminating the function lock state. Once the function lock is released, core functions such as recording, location tracking, and data uploading will return to normal and can be controlled by the user via a terminal, or enter standby or shutdown mode according to preset procedures. In this way, the right to unlock the function is granted to a remote, trusted preset emergency contact, effectively preventing the risk of unauthorized function shutdown due to on-site coercion and ensuring controllability and security when unlocking is truly necessary.

[0159] Example 11:

[0160] The multi-dimensional data encryption upload method in this embodiment includes various unlocking commands, namely voice commands or APP scanning commands.

[0161] When the terminal responds to the SOS trigger signal and enters a function-locked state, the audio acquisition module, positioning module, motion monitoring module, and WIFI scanning module begin to operate. The collected data is processed by the encryption module and then uploaded by the communication module to the school's security center platform and cloud storage server. In this state, the terminal's local interface and physical buttons cannot be unlocked. Unlocking must be performed remotely by a pre-designated emergency contact.

[0162] After receiving a distress call, the pre-set emergency contact can choose to remotely unlock the device by sending a voice command or scanning a QR code via the app, depending on the situation. If a voice command is chosen, the emergency contact must speak a specific voice password pre-linked to the terminal during the call. The terminal's main control module analyzes the received voice signal in real time using its integrated voice recognition unit. The main control module compares the recognized voice content with the internally stored pre-set voice password template for verification. Only when the voice content completely matches and originates from the pre-set emergency contact number that has been connected is the main control module considered the voice command verification successful.

[0163] If the option to send a QR code via an app is chosen, the process differs. The school's security center platform or associated cloud management platform generates a time-sensitive, dynamically encrypted graphic code and pushes it to the designated emergency contact's mobile phone via SMS or a dedicated application. After the emergency contact scans the graphic code with their phone, their mobile application automatically sends a digital command containing encrypted verification information to the terminal's main control module. Upon receiving the digital command, the main control module calls the decryption algorithm in the encryption module to decrypt and verify the command, confirming its validity and legitimate origin. The verification includes the command's timeliness, digital signature, and whether it matches the currently locked terminal.

[0164] Regardless of the command method used, once the main control module completes verification and confirms the command's validity, it will immediately execute the unlocking operation. The main control module releases the function lock, restoring the terminal device to normal operating mode. The forced operation of core functions such as recording and location tracking ceases, and the data upload process ends. Simultaneously, the main control module generates an unlocking log, recording the unlocking time, the type of command used (voice or QR code), and the verification result. This log is then encrypted and uploaded to the platform as part of subsequent data packets for full traceability and review of the event. This design ensures that unlocking permissions are strictly controlled by trusted emergency contacts, avoiding the risk of unauthorized operation by on-site personnel in emergency situations, while providing a flexible and reliable remote unlocking solution.

[0165] Example 12:

[0166] The terminal in this embodiment includes a main control module, an emergency triggering and locking module, an audio acquisition module, a positioning module, a motion monitoring module, a Wi-Fi scanning module, an encryption module, a storage module, and a power module. After the physical SOS button is triggered, the main control module performs a cyclic dialing of preset emergency numbers and controls the other modules to work in coordination.

[0167] The emergency triggering and locking module includes a physical SOS button and a locking unit. When the physical SOS button is triggered, the locking unit immediately activates. The locking unit locks the recording function of the audio acquisition module, the positioning function of the positioning module, and the data upload function of the communication module by modifying the software control flags within the main control module. In this state, all physical buttons, the touchscreen interface, and any local software interface on the terminal device cannot disable or interrupt these functions. The locking state is released by a verified remote command sent via the communication link by a preset emergency contact after connecting the distress call. The locking unit works in conjunction with the backup power supply in the power module. The backup power supply automatically supplies power to the aforementioned core functional modules when the main power connection is disconnected, preventing the locking state from being interrupted by a physical power outage.

[0168] The audio acquisition module is forcibly activated after starting from the locked state, continuously acquiring sound signals from the surrounding environment and outputting the generated audio data stream in real time. The positioning module works synchronously, continuously receiving satellite navigation signals, parsing and outputting the terminal's current latitude and longitude coordinates, altitude, and timestamp information. The motion monitoring module incorporates a three-axis accelerometer and a three-axis gyroscope. The three-axis accelerometer measures the terminal's linear acceleration in three orthogonal directions, and the three-axis gyroscope measures the terminal's rotational angular velocity around three orthogonal axes. This module continuously acquires and outputs the aforementioned motion data. The Wi-Fi scanning module is activated, continuously scanning for wireless radio frequency signals around the terminal, identifying and acquiring the media access control address, signal strength, and network name information of detectable Wi-Fi hotspots.

[0169] The encryption module receives raw data from the audio acquisition module, positioning module, motion monitoring module, and WIFI scanning module. Internally, the encryption module integrates an independent hardware encryption chip, which embeds an encryption algorithm compliant with the standards of the State Cryptography Administration. The encryption module uses this algorithm to perform real-time encryption operations on all received raw data, generating ciphertext data. Simultaneously, based on a specific cryptographic hash function, the encryption module calculates and generates a data integrity check code for each encrypted data packet; this check code is bound to the ciphertext data. The storage module temporarily buffers encrypted data packets with attached check codes. The power module includes a main power supply and a backup power supply. The backup power supply circuit automatically activates when the main power supply is interrupted, providing power to the terminal's main control module, emergency triggering and locking module, audio acquisition module, positioning module, encryption module, and necessary communication units.

[0170] The main control module's built-in sophisticated algorithm processes the data collected by the motion state monitoring module. First, the algorithm applies Kalman filtering to the raw acceleration and angular velocity data sequences to estimate and filter out random noise, resulting in smooth motion data. Next, within a set time window, the algorithm calculates the difference between the peak and trough values ​​of the synthesized acceleration. When this difference reaches or exceeds a threshold of three times the gravitational acceleration, the algorithm records a "significant change" event within that time window. The algorithm continuously counts the number of "significant change" events occurring within a 10-second rolling time window. Based on the preset range of the count, the algorithm classifies the motion state into three danger levels: low, medium, and high. For example, 1 to 2 "significant changes" within 10 seconds are classified as low danger, 3 to 5 as medium danger, and 6 or more as high danger. The main control module generates an identifier for the real-time determined danger level and embeds this identifier into the data packet to be uploaded.

[0171] The communication module uploads encrypted data packets containing hazard level indicators, cached in the storage module, to the school's security center platform and cloud storage server via the mobile communication network. If the network connection is interrupted during the upload process, the data packets continue to be cached in the storage module; once the network is restored, the communication module automatically re-uploads the cached, unuploaded data packets to the server. When a preset emergency contact answers a distress call made from the terminal and sends a specific remote unlock command via voice or a dedicated application, the main control module receives and decrypts the command and verifies its validity. After successful verification, the main control module clears the function lock flag, unlocks the recording, location, and data upload functions, and the terminal returns to normal operating mode.

[0172] Example 13:

[0173] This embodiment integrates an emergency rescue terminal for campus safety, designed to prevent human-caused damage, into a children's smartwatch, creating a personal safety device suitable for young users. The unique way the children's smartwatch is worn (usually securely fastened to the wrist) makes the data collection of the motion monitoring module more accurate and continuous. At the same time, its widespread daily wear enhances the concealment and accessibility of emergency calls.

[0174] An emergency rescue terminal for campus safety integrated into a children's smartwatch, designed to prevent vandalism, includes the smartwatch itself and various functional modules built into it. The smartwatch itself features a waterproof and dustproof design, and the watchband is equipped with a structure to prevent violent pulling. This structure has built-in conductive circuitry. When the watchband is forcibly cut or the buckle is abnormally opened, the main control module can detect the signal and trigger an auxiliary alarm mechanism, recording and uploading the watchband disconnection event as supplementary abnormal information.

[0175] The main control module is located on the watch's PCB motherboard. It is used to repeatedly dial preset emergency numbers (such as parents' mobile phones or school security centers) after an SOS is triggered, and to control the coordinated operation of various modules within the watch. The main control module has a built-in low-power management mode, which shuts down some sensors to extend battery life in non-emergency situations, while maintaining real-time monitoring of the physical SOS button.

[0176] The emergency trigger and locking module includes a physical SOS button and a locking unit located on the side of the watch. The physical SOS button features a hidden or raised design to prevent accidental activation, allowing children to trigger it in an emergency by pressing it repeatedly or holding it for a specific duration (e.g., 3 seconds). Upon triggering, the locking unit immediately activates, locking the recording, location, and data upload functions. The locked state has the highest priority; no options to disable these functions are displayed on the watch screen. Even if the watch is restarted, the locked state will persist until a remote unlock command from a preset emergency contact is received. The locking unit is written into the watch's underlying firmware via software logic, preventing unlocking through local operations such as flashing the firmware or restoring factory settings.

[0177] The audio acquisition module uses a miniature MEMS microphone, located in a concealed pickup hole on the watch case, to be forcibly activated and continuously record audio in an emergency. Considering the scenario of children using the device, the module does not display any recording prompt icon on the watch screen during recording, maintaining a normal interface display to avoid alerting the perpetrator.

[0178] The positioning module integrates a GPS / BeiDou / base station multi-mode positioning chip to collect the watch's latitude, longitude, speed, and altitude data in real time. In indoor scenarios, the module automatically switches to a combined Wi-Fi positioning and base station positioning mode to ensure the continuity of location information.

[0179] The motion monitoring module includes a three-axis accelerometer and a three-axis gyroscope, utilizing the close fit of children's watches on their wrists to accurately collect arm movement data. The main control module incorporates a sophisticated algorithm to identify the level of danger based on the collected motion data; this algorithm is optimized for children's behavioral characteristics.

[0180] Kalman filtering was performed on the acceleration and angular velocity data for preprocessing.

[0181] The difference between the peak and trough values ​​of acceleration per unit time is calculated, and a difference ≥3g is defined as "significant change". This threshold is calibrated in combination with the characteristic differences between children's strenuous exercise (such as running and jumping) and violence (such as falling, being pushed, or having their arms twisted).

[0182] The risk level is determined by the number of significant changes within 10 seconds: low, medium, and high. 1-2 significant changes within 10 seconds indicate low risk (possibly due to strenuous exercise or an accidental fall); 3-5 significant changes within 10 seconds indicate medium risk (possibly due to sustained pulling or physical conflict); ≥6 significant changes within 10 seconds or a single acceleration difference ≥5g indicate high risk (possibly due to severe assault, snatching of a watch, or physical violence).

[0183] The danger level indicator is embedded in the uploaded data packet. When the danger level is determined to be high, the watch's vibration motor can actively vibrate slightly to alert the child that "the high-level distress mode has been automatically entered," while simultaneously uploading a data packet with a priority indicator.

[0184] The WIFI scanning module collects the MAC addresses, signal strength, and names of nearby WIFI hotspots. This data, combined with GPS / BeiDou positioning data collected by the positioning module, forms the location tracking information. In a campus environment, this data can be matched with the school's WIFI deployment map to accurately pinpoint specific teaching buildings, floors, and even classrooms.

[0185] The encryption module employs a national-level encryption algorithm to encrypt the collected data throughout the entire process and generates a data integrity verification code. The encryption chip is integrated into the watch's main control circuit, ensuring encryption protection begins from the source of data generation.

[0186] The storage module uses a miniaturized eMMC chip to cache encrypted data. Its capacity is designed to support at least 60 minutes of continuous high-quality audio and sensor data storage, ensuring that data is not lost in the event of a network outage.

[0187] The power module includes a main battery and a backup micro battery. The main battery is a rechargeable lithium battery that powers the watch daily. The backup battery is a solid-state thin-film battery integrated into the watch's motherboard. When the main battery is physically removed or depleted, it automatically maintains the core functions of the main control module, emergency trigger and lock module, audio acquisition module, and positioning module for at least 15 minutes, ensuring the distress call process is not interrupted by forced power loss. The conductive circuitry in the strap's anti-tear structure is linked to the backup battery circuitry. Once the strap is detected to be broken, the backup battery immediately cuts off external power to prevent malicious data destruction, and the last stored data is marked as "data suspected of being before terminal damage."

[0188] In an emergency, the watch's display module enters a disguise mode, where the screen can display a normal time interface or a customized interface for normal child use, hiding all SOS-related prompts to mislead the perpetrator.

[0189] An emergency SOS method for preventing vandalism in children's smartwatches includes the following steps:

[0190] In response to a signal triggered by a child via the physical SOS button, the main control module activates the function lock state, locking the recording, positioning, and data upload functions, while simultaneously activating the backup micro battery;

[0191] The watch screen enters disguise mode, hiding all emergency status notification icons;

[0192] The audio acquisition module is forced to start recording, continuously capturing on-site audio and caching it to the storage module;

[0193] The positioning module collects the watch's geographical location data in real time;

[0194] The motion monitoring module collects motion data from the watch, and the main control module runs a sophisticated algorithm optimized for children's behavior to analyze and process the motion data, identify and label the level of danger.

[0195] The WIFI scanning module collects the MAC address information of surrounding WIFI hotspots;

[0196] The encryption module encrypts audio data, location data, motion state analysis results, and WIFI MAC addresses.

[0197] The communication module uploads encrypted data to the parent's mobile app and the school's security center platform via 4G / 5G mobile networks. If the network is interrupted, the encrypted data is cached in the storage module and automatically re-uploaded once the network is restored. The uploaded data includes device identification, child identification information, and a list of emergency contacts.

[0198] Parents, acting as the designated emergency contact, can send a remote unlock command (either by clicking the unlock button within the app or by using voice commands) via a parent's mobile app after receiving a distress call. The main control module receives and verifies the command, unlocking the watch and restoring it to normal operation. If the parent fails to connect to the distress call three times consecutively, the system automatically transfers the call to the school's safety center or the police emergency response platform, authorizing temporary intervention.

[0199] Through the above technical solution, this embodiment deeply integrates a campus safety emergency rescue terminal with a children's smartwatch, a daily wearable device. Leveraging the watch's discreet and close-fitting nature, and its widespread use by children, a personal safety barrier is constructed. The terminal's mandatory locking mechanism and power-off protection design after an SOS trigger effectively address common acts of violence against children, such as snatching, smashing, or forcibly shutting down the watch. The motion monitoring module's algorithm optimization based on children's behavioral characteristics improves the accuracy of danger identification and reduces false alarms caused by normal vigorous movement. The introduction of a disguise mode further enhances the concealment of the rescue process, ensuring children's safety in dangerous environments. Multi-dimensional data collection and encrypted uploading provide parents, schools, and potential subsequent legal intervention with complete and reliable evidence of the scene.

[0200] It should be noted that, in this document, relational 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 such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0201] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A campus safety emergency distress terminal designed to prevent human-caused damage, characterized in that: include: The main control module is used to repeatedly dial preset emergency numbers after SOS is triggered, and to control the coordinated operation of various modules. The emergency triggering and locking module includes a physical SOS button and a locking unit. The locking unit locks the recording, positioning and data uploading functions after the SOS is triggered, and can only be unlocked by remote commands from a preset emergency contact. The audio acquisition module is used to force activation and continuously record on-site audio in emergency situations; The positioning module is used to collect the terminal's geographical location data in real time; The motion status monitoring module includes a triaxial sensor for collecting motion data from the terminal. The WIFI scanning module is used to collect the MAC address information of surrounding WIFI hotspots; The encryption module is used to encrypt the collected audio, location, motion status, and WIFI data. The storage module is used to cache encrypted data; The power module includes a main power supply and a backup power supply, wherein the backup power supply is used to maintain the operation of core functions when the main power supply is disconnected.

2. The campus safety emergency rescue terminal for preventing human-caused damage as described in claim 1, characterized in that, The motion state monitoring module includes a three-axis accelerometer and a three-axis gyroscope. The main control module has a built-in precision algorithm for identifying the danger level based on the collected motion data.

3. The campus safety emergency rescue terminal for preventing human-caused damage as described in claim 2, characterized in that, The precision algorithm includes: Kalman filtering was performed on the acceleration and angular velocity data for preprocessing. Calculate the difference between the peak and trough values ​​of acceleration per unit time, and define a difference ≥3g as a "large change"; The risk level is determined by the number of significant changes within 10 seconds, classifying the risk as low, medium, or high. Embed the hazard level indicator into the uploaded data packet.

4. The campus safety emergency rescue terminal for preventing human-caused damage as described in claim 1, characterized in that, The WIFI scanning module collects the MAC address, signal strength, and hotspot name of surrounding WIFI hotspots, which, together with the GPS / BeiDou positioning data collected by the positioning module, constitutes the positioning and tracing information.

5. The campus safety emergency rescue terminal for preventing human-caused damage as described in claim 1, characterized in that, The encryption module uses a national-level encryption algorithm to encrypt the collected data across the entire chain and generates a data integrity verification code.

6. The campus safety emergency rescue terminal for preventing human-caused damage as described in claim 1, characterized in that, The locking unit locks the core functions through software logic and works in conjunction with the hardware power-off protection of the backup power module to ensure that the functions cannot be deactivated by local operation after SOS is triggered.

7. A multi-dimensional data encryption and uploading method, applied to the campus security emergency rescue terminal for preventing human-caused damage as described in any one of claims 1 to 6, characterized in that, Includes the following steps: In response to the SOS trigger signal, the main control module enters the function lock state, locking the recording, positioning and data upload functions, while activating the backup power supply; The audio acquisition module is forced to start recording, continuously capturing on-site audio and caching it to the storage module; The positioning module collects the terminal's geographical location data in real time; The motion status monitoring module collects motion data from the terminal, and the main control module runs a sophisticated algorithm to analyze and process the motion data. The WIFI scanning module collects the MAC address information of surrounding WIFI hotspots; The encryption module encrypts audio data, location data, motion state analysis results, and WIFI MAC addresses. The communication module uploads the encrypted data to the school's security center platform and cloud storage server. If the network is interrupted, the encrypted data is cached in the storage module and automatically re-uploaded after the network is restored. If the preset emergency contact answers the phone and receives the remote unlock command, the main control module will unlock its functions.

8. The multi-dimensional data encryption upload method according to claim 7, characterized in that, The steps by which the main control module runs a sophisticated algorithm to analyze and process motion data include: Kalman filtering was performed on the collected triaxial acceleration and triaxial angular velocity data for preprocessing. Calculate the difference between the peak and trough values ​​of acceleration per unit time, and define a difference ≥3g as a "large change"; The danger level is determined by the number of times the risk changes drastically within 10 seconds: If 1-2 significant changes are detected within 10 seconds, the risk level is determined to be low. If 3-5 significant changes are detected within 10 seconds, the risk level is determined to be medium. If ≥6 large changes are detected within 10 seconds or a single acceleration difference is ≥5g, it is judged as a high-risk level. Embed the hazard level indicator into the data packet to be uploaded.

9. The multi-dimensional data encryption upload method according to claim 7, characterized in that, The unlock command is sent by a preset emergency contact after a phone call is connected. The main control module receives and verifies the command before unlocking the function.

10. The multi-dimensional data encryption upload method according to claim 9, characterized in that, The unlocking instructions include voice commands or QR code scanning commands via the app.

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