A voice alarm system and method based on a talkback device

Abstract

This invention discloses a voice alarm system and method based on an intercom device. The system includes a portable device with an intercom module, and the portable device further includes: a voice acquisition module; a voice processing module, used to receive the electrical signal output by the voice acquisition module, and compare and match the voice feature value corresponding to the electrical signal with a preset alarm voice feature value. When the matching degree reaches a preset threshold, a corresponding alarm voice command is generated and sent to a control module; the control module is used to receive the alarm voice command and send it to the intercom APP of the handheld smart device of the associated emergency contact through a wireless connection module. This invention is small in size and highly portable, suitable for various temporary and mobile security scenarios such as business trips, hotels, outdoor camping, and living alone. It also has active voice alarm and passive vibration alarm functions, and can detect potential dangers and play preset warning sounds, providing danger detection and on-site warning functions.

Description

Technical Field

[0001] This invention relates to the field of intelligent security and emergency communication technology, specifically to a voice alarm system and method based on intercom devices. Background Technology

[0002] With societal development and increased public awareness of security, the demand for personal and family security is growing. Traditional security systems, such as fixed-installation cameras, door and window sensors, and professional alarm control panels, while powerful in function, suffer from drawbacks such as complex installation, high cost, fixed usage scenarios, and poor portability, making them unsuitable for users' temporary and mobile security needs. For example, in scenarios such as staying in hotels while on business trips, outdoor camping, short-term rentals, or living alone at night, users require a portable security solution that is ready to use immediately and requires no complex wiring.

[0003] On the other hand, portable electronic devices we use in daily life, such as walkie-talkies, smart speakers, smartwatches, Bluetooth headsets, and power banks, primarily focus on basic functions like voice communication, music playback, message notifications, and device charging, with relatively few safety alarm functions. Although some of these electronic devices do have alarm functions, they are mostly manually triggered, such as physical alarm buttons. When a user encounters danger, they need to manually press the button to activate the alarm signal. However, in emergency situations, manual triggering is often impossible, causing the alarm to fail and preventing timely transmission of alarm information to emergency contacts.

[0004] Furthermore, some existing portable electronic devices with integrated alarm functions can only send alarm messages to mobile phones to trigger alarms. They do not have the function of monitoring danger and warning, and cannot remind users at the first moment when danger occurs. They are also difficult to effectively deter potential intruders, which reduces the timeliness and effectiveness of security. Summary of the Invention

[0005] The purpose of this invention is to provide a voice alarm system and method based on intercom devices, aiming to improve the problems of poor portability, limited adaptability to scenarios, and the lack of alarm function in existing traditional security systems, as well as the problems of portable electronic devices either lacking alarm functions, having single alarm methods, being prone to failure, lacking hazard monitoring and on-site warning capabilities, and having insufficient alarm timeliness.

[0006] This invention is implemented as follows: To achieve the above objectives, according to one aspect of the present invention, a voice alarm system based on an intercom device is provided, comprising a portable device having an intercom module, the portable device further comprising: The power supply module is used to supply power to each module; The voice acquisition module is used to collect user voice information and convert it into electrical signals; The voice processing module is used to receive the electrical signal output by the voice acquisition module, and compare and match the voice feature value corresponding to the electrical signal with the preset alarm voice feature value. When the matching degree of the two reaches the preset threshold, the corresponding alarm voice command is generated and sent to the control module. The wireless connectivity module is used to establish communication connections with handheld smart devices and wireless networks; The control module is connected to the intercom module, voice acquisition module, voice processing module, and wireless connection module respectively. The control module is used to receive alarm voice commands output by the voice processing module and send the alarm voice commands to the intercom APP of the handheld smart device of the associated emergency contact through the wireless connection module. After receiving the alarm voice commands, the intercom APP generates a warning sound and / or alarm information to alert the emergency contact.

[0007] Furthermore, the portable device also includes a vibration detection module, a control switch, and a sound playback module; the sound playback module, vibration detection module, and control switch are all electrically connected to the control module; the control switch is used to control the start and stop of the vibration detection module and the sound playback module; the vibration detection module is used to detect external vibration signals, convert the vibration signals into electrical signals and send them to the control module; when the intensity of the vibration signal detected by the vibration detection module is greater than a preset threshold, the control module starts the sound playback module to play a preset warning sound, and at the same time sends the alarm voice command to the intercom APP of the associated emergency contact's handheld smart device through the wireless connection module.

[0008] Furthermore, the portable device can be any one of a walkie-talkie, Bluetooth headset, speaker, smartwatch, power bank, or fan, and the wireless connection module includes at least one of a Bluetooth module, WiFi module, 4G module, or 5G module. When the wireless connection module is a Bluetooth module, the alarm voice command is sent to the emergency contact's walkie-talkie APP through the mobile network of the handheld smart device. When the wireless connection module is a WiFi module, 4G module, or 5G module, it directly establishes a connection with the wireless network and sends the alarm voice command.

[0009] Furthermore, the vibration detection module employs a vibration sensor, and the detection threshold of the vibration sensor can be adjusted via a walkie-talkie app.

[0010] Furthermore, the portable device also includes a positioning module, which is electrically connected to the control module. The positioning module is used to obtain its own real-time location information and send it to the control module. When the control module sends an alarm voice command, it simultaneously sends the real-time location information and the alarm voice command to the intercom APP. The intercom APP then pushes the real-time location information and the alarm information to the intercom APP of the emergency contact.

[0011] Furthermore, the voice processing module is also used to perform noise filtering on the electrical signal output by the voice acquisition module, extract the clean voice signal, and then perform voice feature value comparison and matching.

[0012] Furthermore, the control module has at least two preset warning sounds stored in it, and the type of the preset warning sound and the volume of the sound playback module can be adjusted through the intercom APP.

[0013] Furthermore, the power supply module uses a rechargeable lithium battery and includes a charging management unit and a power detection unit; the charging management unit is used to protect the lithium battery, and the power detection unit is used to detect the remaining power and push the power information to the intercom APP.

[0014] Furthermore, the intercom app has an alarm record query module and a parameter setting module; the alarm record query module is used to store and query alarm information; the parameter setting module is used to set preset alarm voice feature values, vibration detection thresholds, and warning sounds.

[0015] According to a second aspect of the present invention, the present invention provides a voice alarm method based on an intercom device, applied to the above-mentioned voice alarm system based on an intercom device, including an active voice alarm method and a passive vibration alarm method; The active voice alarm method includes the following steps: S101: The voice acquisition module collects surrounding voice information in real time and converts it into electrical signals, which are then sent to the voice processing module. S102: The voice processing module compares and matches the voice feature value corresponding to the electrical signal with the preset alarm voice feature value. If the matching degree reaches the preset threshold, an alarm voice command is generated and sent to the control module. S103: After receiving the alarm voice command, the control module sends it to the intercom APP of the handheld smart device of the associated emergency contact through the wireless connection module; S104: After receiving the alarm voice command, the intercom APP generates an alarm tone and / or alarm information to notify the emergency contact person; The passive vibration alarm method includes the following steps: S201: Turn on the control switch to start the vibration detection module and the sound playback module. The vibration detection module detects external vibration signals in real time. S202: The vibration detection module converts the detected vibration signal into an electrical signal and sends it to the control module; S203: When the intensity of the vibration signal detected by the vibration detection module is greater than the preset threshold, the control module starts the sound playback module to play the preset warning sound and generates an alarm voice command at the same time. S204: The control module sends alarm voice commands to the intercom APP of the handheld smart device of the associated emergency contact via the wireless connection module to complete the alarm.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention is small in size and highly portable, suitable for various temporary and mobile security scenarios such as business trip hotels, outdoor camping, and living alone. It also has active voice alarm and passive vibration alarm functions, and can detect possible dangers and play preset warning sounds, thus having danger detection and on-site warning functions. Attached Figure Description

[0017] Figure 1 This is a block diagram of the module structure of the voice alarm system based on an intercom device provided by the present invention; Figure 2 This is a flowchart of the active voice alarm method in the voice alarm method based on intercom equipment provided by the present invention; Figure 3 This is a flowchart of the passive vibration alarm method in the voice alarm method based on intercom equipment provided by the present invention. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1

[0019] This embodiment provides a voice alarm system based on intercom devices. The system includes portable devices with intercom modules, such as intercom Bluetooth headsets, intercom speakers, intercom power banks, and portable intercom fans. These portable devices are suitable for portable scenarios such as outdoor camping and business trips to hotels. In addition to basic functions, they also integrate intercom and alarm functions, enabling active voice alarms and passive vibration alarms.

[0020] like Figure 1 As shown, the portable device integrates a power supply module, a voice acquisition module, a voice processing module, a wireless connection module, a control module, a positioning module, a vibration detection module, a control switch, and a sound playback module. The system is also equipped with an intercom app installed on the user's or emergency contact's handheld smart device (such as a smartphone). The intercom app uses the MicroPhoenix intercom app, and all modules work together with the intercom app to form a complete security alarm system, balancing portability and practicality.

[0021] The detailed structure and functions of each module are as follows: Intercom Module: Employs a full-duplex intercom chip, supporting real-time voice communication between users. Electrically connected to the control module, it ensures that the alarm and intercom functions operate independently and collaboratively through the control module's coordination. Under normal conditions, the intercom module operates independently, enabling voice communication between users. In alarm mode, the control module prioritizes activating the alarm function, suspending the intercom function, and automatically resuming the intercom function after the alarm ends.

[0022] Power Supply Module: This module provides a stable power source for various modules, including the intercom module, voice acquisition module, voice processing module, wireless connection module, control module, positioning module, vibration detection module, and sound playback module. The power supply module uses a rechargeable lithium battery and integrates a charging management unit and a power detection unit. The charging management unit uses a lithium battery charging protection chip to control the charging current and voltage, preventing overcharging, over-discharging, and short circuits, thus extending battery life. The power detection unit uses a voltage detection chip to monitor the remaining battery power in real time, converting the power information into an electrical signal and sending it to the control module. The control module then pushes the power information to the user's intercom app via the wireless connection module. The app interface displays the remaining power in real time, prompting the user to charge the battery promptly and preventing alarm function failure due to insufficient power.

[0023] Voice Acquisition Module: Employing a dual-microphone array structure, including a main microphone and a reference microphone, and integrating a noise-canceling microphone, this module collects user-generated voice information in real time, converting the analog voice signal into a 16-bit digital electrical signal before sending it to the voice processing module. The main microphone acquires a mixed signal containing both voice and ambient noise, while the reference microphone only acquires ambient noise as a reference input, providing data support for subsequent adaptive noise cancellation. The voice acquisition module supports 24 / 7 standby acquisition with standby power consumption ≤10mA, minimizing impact on the device's normal intercom function and battery life. It enables uninterrupted 24-hour acquisition of surrounding voice information, ensuring rapid capture of user alarm voices in emergencies.

[0024] Voice processing module: Equipped with a voice processing chip, electrically connected to the voice acquisition module and control module, it receives the electrical signal output from the voice acquisition module, performs noise filtering, voice feature extraction, and voice feature matching, and ultimately determines whether to generate an alarm voice command and send it to the control module. Its core working logic and corresponding algorithm are as follows: 1. Noise Filtering Processing: The minimum mean square error (LMS) adaptive noise cancellation algorithm based on dual-microphone reference input is adopted to filter environmental noise collected by the voice acquisition module, such as wind noise, crowd noise, and equipment noise, to extract pure user voice signals, avoid voice feature value matching errors caused by noise interference, and improve voice recognition accuracy.

[0025] Algorithm principle: Let the mixed signal (speech + noise) collected by the main microphone be... ,in For clean user voice signals, This is an environmental noise signal, i.e. The reference noise signal acquired by the reference microphone is The signal and the noise in the mixed signal Strongly correlated; output signal of the adaptive filter The filter coefficient vector With reference signal vector The inner product, i.e. ,in, Here, L is the filter coefficient vector, and L is the filter order. In this embodiment, L=8. This is the reference signal vector.

[0026] The algorithm aims to make the output signal As close as possible to the noise component in the mixed signal The error signal (i.e., the estimated clean speech after noise reduction) is defined as follows: Adjusting the filter coefficients using gradient descent to make the mean square error Minimum, coefficient update formula is ,in, In this embodiment, the step size factor is used. , satisfying 0 < <2 / , The largest eigenvalue of the autocorrelation matrix of the reference signal. The mixed signal... With reference signal The input is an adaptive filter, and the filter coefficients are updated in real time using the formula above. Output error signal This refers to the clean speech signal after filtering out noise, which is used for subsequent speech feature extraction and matching.

[0027] 2. Speech Feature Extraction and Matching: Speech features are extracted using Mel-frequency cepstral coefficients (MFCC) and combined with the Dynamic Time Warping (DTW) algorithm to achieve matching of speech feature values ​​of different lengths. This can adapt to alarm voices issued by users at different speaking speeds and tones, thereby improving the accuracy and adaptability of speech recognition. Algorithm principle: First, the clean speech signal after noise reduction... MFCC feature extraction is performed to obtain a speech feature vector sequence; let the pre-stored preset alarm speech feature vector sequence be... M is the standard sequence length; in this embodiment, M=128. The actual speech feature vector sequence collected is... N is the actual sequence length, where , Let i and j be the i-th and j-th MFCC eigenvectors of the standard sequence and the actual sequence, respectively; first, construct the eigenvector distance matrix. Matrix elements Represents the standard eigenvector With actual feature vectors The Euclidean distance is given by the formula: .

[0028] Then find a path starting from the top left corner of the matrix. Go to the bottom right corner Regular path K is the path length, satisfying To minimize the sum of distances along the path, i.e. The path must satisfy boundary constraints ( , Monotonicity constraint , ), continuity constraints ( , ).

[0029] Finally, calculate the average distance along the path. The matching degree is used as the speech feature value; in this embodiment, considering the normalization characteristics of MFCC features, a preset matching threshold is used. When the average distance When the match is less than or equal to 0.4, the match is considered successful, and the voice processing module generates the corresponding alarm voice command and sends it to the control module; if the match degree does not reach the preset threshold, no command is generated to avoid false alarms.

[0030] Wireless connectivity module: It adopts a dual-mode design of Bluetooth 5.0 module and 4G module, and is electrically connected to the control module to establish communication connection between the control module and handheld smart devices and wireless networks, adapting to communication needs in different distance scenarios.

[0031] 1. Close-range scenarios (distance ≤ 10 meters, such as in a hotel room): Establish a communication connection with the user's mobile phone via Bluetooth 5.0 module, and push alarm voice commands and location information to the emergency contact's intercom APP using the mobile network of the mobile phone. The Bluetooth module has low power consumption, which can reduce the overall power consumption of the device.

[0032] 2. Long-distance scenarios (distance > 10 meters, such as outdoor camping): Directly connect to the wireless network via 4G module (supports all network types) to realize real-time push of alarm voice commands and location information, without relying on the user's mobile phone, ensuring that emergency contacts receive alarm information in a timely manner.

[0033] Meanwhile, the wireless connection module can also be used to transmit parameters between the intercom APP and the control module, such as setting parameters like vibration detection threshold and alarm tone type, as well as transmitting power information and location information.

[0034] Control Module: An STM32L4 microcontroller is used as the core control unit of the system. It is electrically connected to the intercom module, voice acquisition module, voice processing module, wireless connection module, positioning module, vibration detection module, control switch, and sound playback module. This module coordinates the collaborative work between the modules, ensuring that the alarm function and intercom function do not interfere with each other. The specific workflow is as follows: 1. Normal working state: The control module keeps all modules in standby mode. The intercom module works normally. The voice acquisition module and vibration detection module (when not turned on) are in low-power standby mode. The positioning module collects location information every 5 minutes. The power detection unit detects the power in real time and pushes it to the APP.

[0035] 2. Active Voice Alarm Status: After receiving the alarm voice command from the voice processing module, the control module immediately pauses the intercom module, retrieves the real-time location information collected by the positioning module, and controls the wireless connection module to push the alarm voice command and location information to the emergency contact's intercom app. Simultaneously, according to user preset settings (which can be enabled / disabled via the intercom app), the sound playback module plays a preset warning tone to alert surrounding personnel and deter intruders. After the alarm ends, the user can manually deactivate the alarm via the intercom app, the control module resumes intercom module operation, and all modules return to normal standby mode.

[0036] 3. Passive Vibration Alarm Status: After the control switch is turned on, the control module activates the vibration detection module and the sound playback module. When the vibration intensity of the vibration signal received by the control module from the vibration detection module exceeds a preset threshold, the intercom module immediately pauses operation, the sound playback module plays a preset warning tone, and simultaneously generates an alarm voice command, retrieves real-time location information from the positioning module, and pushes it to the emergency contact's intercom app via the wireless connection module. After the alarm ends, it can be manually deactivated via the intercom app, or automatically deactivated after the vibration detection module has not detected any abnormal vibration for 3 consecutive minutes, restoring normal operation.

[0037] 4. Parameter setting status: After receiving parameter setting instructions sent by the intercom APP, such as vibration detection threshold and alarm sound type, the control module will synchronize the parameters to the corresponding modules (vibration detection module, sound playback module, etc.) and store the parameters (not lost when power is off) to ensure that the modules work according to the user settings.

[0038] Vibration detection module: Employs a piezoelectric vibration sensor, electrically connected to the control module and control switch, to detect external vibration signals and convert analog vibration signals into digital electrical signals, which are then sent to the control module. In practical use, external vibration signals will be generated, such as when someone illegally touches a hotel room door handle or damages an outdoor tent.

[0039] In this embodiment, the vibration detection module and the control module work together, using a peak detection algorithm to analyze the collected vibration electrical signals, extract the vibration intensity, compare it with a preset threshold, and determine whether an alarm is triggered to avoid false alarms.

[0040] Algorithm principle: Let the vibration electrical signal sequence collected by the vibration detection module be... n=1,2,...,P, where P is the length of the signal sequence. In this embodiment, P=64. The algorithm steps are as follows: 1. Smoothing: For vibration electrical signal sequences Perform moving average filtering to eliminate signal glitches and smooth the signal. The formula is , where N is the length of the moving window, and in this embodiment N=5.

[0041] 2. Peak Extraction: Extracting the smoothed signal peak , as the vibration intensity.

[0042] 3. Threshold determination: [This refers to determining the peak value.] Compared with the user-preset vibration detection threshold (This can be adjusted via the walkie-talkie app; the default setting is shown in this embodiment.) Compare them; if If it is determined to be illegal vibration, a vibration electrical signal is sent to the control module; if If the vibration is normal, no electrical signal will be sent.

[0043] 4. Algorithm Optimization: To avoid false alarms caused by instantaneous spike signals (such as false collisions), a peak duration judgment is added: when a peak is detected... At that time, determine the duration of the peak value. Is it greater than the preset duration threshold? ;like If, then an electrical signal is sent; if If the signal is transient, it is determined to be a momentary interference, and no electrical signal is sent, thus further improving the accuracy of vibration detection.

[0044] Control switch: A touch switch is used, electrically connected to the control module, vibration detection module, and sound playback module, to control the activation and deactivation of the vibration detection module and sound playback module. A single touch activates the passive vibration alarm function (both the vibration detection module and sound playback module enter working mode); a double touch deactivates the passive vibration alarm function (both modules enter standby mode). The switch status can be displayed synchronously via the APP for user convenience.

[0045] Sound playback module: It adopts a 1W miniature speaker, which is electrically connected to the control module and control switch. It is used to receive control signals from the control module and play preset warning sounds. The control module has two preset warning sounds (a piercing warning sound and a voice prompt "Danger, do not approach"). The type and volume of the warning sound can be adjusted through the intercom APP (volume adjustment range 0-100%). It can remind users of abnormal situations when danger occurs, and can also effectively deter potential intruders.

[0046] Positioning Module: Utilizing a GPS / BeiDou dual-mode positioning module integrated into the smart intercom headset, this module is electrically connected to the control module. It acquires the portable device's real-time location information and transmits it to the control module in real-time. In normal standby mode, the positioning module collects location information every 5 minutes. In alarm mode, it collects location information continuously at a frequency of once per second, ensuring emergency contacts can accurately obtain the user's real-time location and providing precise support for rescue efforts. After processing by the control module, the location information, along with alarm voice commands, is pushed to the emergency contact's intercom app.

[0047] Weihuang Intercom App: Installed on the user's or emergency contact's mobile phone, it supports iOS, Android, and HarmonyOS systems. It supports functions such as binding with portable devices, parameter settings, alarm information reception, location viewing, and historical record querying. Its core functions are as follows: 1. Device Binding: Users can scan the QR code on the smart intercom headset through the intercom app to complete the device binding. After binding, users can view basic device information, such as device model, battery level, and on / off status. One intercom app can bind multiple portable devices, and one portable device can be associated with multiple emergency contact intercom apps.

[0048] 2. Parameter settings: Through the parameter setting module of the intercom APP, you can set preset alarm voice feature values ​​(such as recording voices such as "help" or "emergency help" as alarm trigger voices), vibration detection threshold, warning sound type and volume, positioning acquisition frequency and other parameters. After the parameters are set, they are synchronized to the control module in real time.

[0049] 3. Alarm Reception: After receiving alarm voice commands and location information pushed by the control module, it automatically plays an alarm sound (maximum volume, which can be manually adjusted). At the same time, it displays alarm details (alarm time, alarm type (voice / vibration), real-time location, device battery level) on the APP interface and pops up a reminder window to ensure that emergency contacts can find it in time.

[0050] 4. Location Viewing: The app has a built-in map module that can display the location information of portable devices in real time and supports navigation. Emergency contacts can quickly go to the user's location through navigation.

[0051] 5. Historical Record Query: The alarm record query module of the APP stores all alarm information (alarm time, alarm type, alarm location, device status) for no less than 1 year, which is convenient for users to query and trace later.

[0052] 6. Intercom Function: Supports real-time voice intercom between users and emergency contacts, and between users themselves. It works in conjunction with the intercom module of portable devices to enable real-time communication during an alarm, allowing emergency contacts to understand the situation on site.

[0053] Working principle: This system coordinates the various modules with the intercom app through the control module, forming a complete active voice alarm closed loop and passive vibration alarm closed loop, as detailed below: (1) Active voice alarm closed loop: The voice acquisition module acquires the user's alarm voice → converts it into an electrical signal → the voice processing module filters noise and extracts MFCC features through the dual-input LMS algorithm and matches feature values ​​through the DTW algorithm → generates an alarm command after successful matching → the control module receives the command and retrieves the location information → the wireless connection module pushes the command and location information to the emergency contact's intercom APP → the intercom APP receives and displays the alarm details and plays the warning sound → normal intercom resumes after the alarm ends; (2) Passive vibration alarm closed loop: control switch is turned on → vibration detection module detects vibration in real time → the converted digital electrical signal is sent to the control module in real time → after receiving the electrical signal, the control module processes the electrical signal through the peak detection algorithm → the peak value is compared with the preset vibration detection threshold and peak duration threshold, and after determining that it is an illegal vibration → the intercom module is immediately suspended, the sound playback module is started to play the preset warning sound, and at the same time, an alarm voice command is generated and the real-time location information of the positioning module is retrieved → the wireless connection module selects Bluetooth or 4G mode according to the scenario, and pushes the alarm voice command and real-time location information to the emergency contact's intercom APP together → after receiving the alarm, the emergency contact's intercom APP automatically plays the maximum volume warning sound and pops up a pop-up window to display the alarm details. The emergency contact can view the location and navigate there through the APP, or communicate the situation on site through the intercom function → the user manually cancels the alarm through the APP, or the control module automatically cancels the alarm after detecting that the vibration detection module has not sent a vibration electrical signal for 3 consecutive minutes → the control module controls each module to return to normal working state. Example 2

[0054] This embodiment provides a voice alarm method based on an intercom device, which is applied to the voice alarm system based on an intercom device provided in Embodiment 1. The method includes an active voice alarm method and a passive vibration alarm method. The two methods can be operated independently or simultaneously to achieve dual protection.

[0055] like Figure 2 As shown, the active voice alarm method includes the following steps: S101: The voice acquisition module collects surrounding voice information in real time and converts it into electrical signals, which are then sent to the voice processing module. S102: The voice processing module compares and matches the voice feature value corresponding to the electrical signal with the preset alarm voice feature value. If the matching degree reaches the preset threshold, an alarm voice command is generated and sent to the control module. S103: After receiving the alarm voice command, the control module sends it to the intercom APP of the handheld smart device of the associated emergency contact through the wireless connection module; S104: After receiving the alarm voice command, the intercom APP generates a warning tone and / or alarm information to notify the emergency contact person of an abnormal situation, so that they can be informed in a timely manner and take appropriate measures.

[0056] like Figure 3 As shown, the passive vibration alarm method includes the following steps: S201: Turn on the control switch to start the vibration detection module and the sound playback module. The vibration detection module detects external vibration signals in real time. S202: The vibration detection module converts the detected vibration signal into an electrical signal and sends it to the control module in real time; S203: After receiving the vibration electrical signal, the control module determines whether the vibration signal intensity is greater than the preset threshold. When the vibration signal intensity detected by the vibration detection module is greater than the preset threshold, the control module starts the sound playback module to play the preset warning sound and generates an alarm voice command at the same time. S204: The control module sends alarm voice commands to the intercom APP of the handheld smart device of the associated emergency contact through the wireless connection module, completing the entire alarm process and realizing passive protection alarm.

[0057] In summary, the technical solution of the present invention has the following significant beneficial effects: 1. Integrated intercom and alarm functions, portable and easy to use: This invention is based on a portable device with an intercom module, integrating the alarm function and intercom function into one, eliminating the need for users to carry separate dedicated alarm devices. It is small in size, highly portable, and ready to use immediately. It is suitable for various temporary and mobile security scenarios such as business trips, hotels, outdoor camping, and living alone, solving the defects of traditional security systems in terms of poor portability and inconvenience of use.

[0058] 2. Dual alarm modes for more comprehensive protection: This invention features both active voice alarm and passive vibration alarm functions. The active alarm is suitable for emergency scenarios where the user can make a sound, while the passive alarm is suitable for protective scenarios where the user cannot speak. The dual modes cover different security needs and enhance user safety.

[0059] 3. Rapid alarm response and timely information transmission: This invention pushes alarm voice commands and real-time location information of portable devices in real time through a wireless connection module. The emergency contact's intercom APP can immediately receive and play the warning sound, display alarm details and precise location, ensuring that the emergency contact can quickly grasp the situation and take rescue measures.

[0060] 4. Equipped with on-site warning function and good deterrent effect: This invention can play a preset warning sound when a possible danger is detected. It can not only remind the user that there is an abnormal situation, but also effectively deter potential intruders and prevent the danger from escalating further, thus solving the defects of existing equipment that lack danger detection and on-site warning capabilities.

[0061] 5. Customizable parameters and strong adaptability: The vibration detection threshold, preset warning sound type, volume, preset alarm voice feature value and other parameters of this invention can all be adjusted through the intercom APP, adapting to the usage needs of different scenarios and different users, with high flexibility and strong practicality.

[0062] 6. High speech recognition accuracy and low false alarm rate: The speech processing module of this invention adopts a dual-microphone array and LMS adaptive noise cancellation algorithm. It effectively filters out environmental noise by using reference noise input, avoiding the signal loss problem of single-channel noise reduction. After extracting the pure speech signal, it performs feature value matching through the DTW algorithm. The vibration detection and control module of this invention, through peak detection algorithm and duration judgment, provides double protection to reduce the probability of false alarms and ensure the accuracy of alarms.

[0063] 7. Strong compatibility and good expandability: The wireless connection module of this invention supports multiple communication methods such as Bluetooth, 4G, and 5G, and is compatible with different models of handheld smart devices and wireless networks; the system adopts a modular design with clear division of labor among modules, and other functional modules can be added according to actual needs to expand the application scenarios and functional scope of the system; the method steps are clear and can be adapted to different types of portable devices.

[0064] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A voice alarm system based on a talkback device, characterized in that The portable device includes a walkie-talkie module, and the portable device further includes: The power supply module is used to supply power to each module; The voice acquisition module is used to collect user voice information and convert it into electrical signals; The voice processing module is used to receive the electrical signal output by the voice acquisition module, and compare and match the voice feature value corresponding to the electrical signal with the preset alarm voice feature value. When the matching degree of the two reaches the preset threshold, the corresponding alarm voice command is generated and sent to the control module. The wireless connectivity module is used to establish communication connections with handheld smart devices and wireless networks; The control module is connected to the intercom module, voice acquisition module, voice processing module, and wireless connection module respectively. The control module is used to receive alarm voice commands output by the voice processing module and send the alarm voice commands to the intercom APP of the handheld smart device of the associated emergency contact through the wireless connection module. After receiving the alarm voice commands, the intercom APP generates a warning sound and / or alarm information to alert the emergency contact.

2. A voice alarm system based on an intercom device according to claim 1, characterized in that, The portable device also includes a vibration detection module, a control switch, and a sound playback module; the sound playback module, vibration detection module, and control switch are all electrically connected to the control module; the control switch is used to control the start and stop of the vibration detection module and the sound playback module; the vibration detection module is used to detect external vibration signals, convert the vibration signals into electrical signals and send them to the control module; when the intensity of the vibration signal detected by the vibration detection module is greater than a preset threshold, the control module starts the sound playback module to play a preset warning sound, and at the same time sends the alarm voice command to the intercom APP of the associated emergency contact's handheld smart device through the wireless connection module.

3. A voice alarm system based on a talkback device according to claim 1 or 2, characterized in that, The portable device is any one of a walkie-talkie, Bluetooth headset, speaker, smartwatch, power bank, and fan. The wireless connection module includes at least one of a Bluetooth module, WiFi module, 4G module, and 5G module. When the wireless connection module is a Bluetooth module, the alarm voice command is sent to the emergency contact's walkie-talkie APP through the mobile network of the handheld smart device. When the wireless connection module is a WiFi module, 4G module, or 5G module, it directly establishes a connection with the wireless network and sends the alarm voice command.

4. The voice alarm system based on the intercom device according to claim 2, characterized in that, The vibration detection module uses a vibration sensor, and the detection threshold of the vibration sensor can be adjusted via a walkie-talkie app.

5. The voice alarm system based on the intercom device according to claim 1, characterized in that, The portable device also includes a positioning module, which is electrically connected to the control module. The positioning module is used to obtain its own real-time location information and send it to the control module. When the control module sends an alarm voice command, it simultaneously sends the real-time location information and the alarm voice command to the intercom APP. The intercom APP then pushes the real-time location information and the alarm information to the intercom APP of the emergency contact.

6. A voice alarm system based on an intercom device according to claim 1, characterized in that, The voice processing module is also used to filter noise from the electrical signal output by the voice acquisition module, extract the clean voice signal, and then perform voice feature value comparison and matching.

7. A voice alarm system based on an intercom device according to claim 2, characterized in that, The control module has at least two preset warning sounds stored in it, and the type of the preset warning sound and the volume of the sound playback module can be adjusted through the intercom APP.

8. A voice alarm system based on an intercom device according to claim 1, characterized in that, The power supply module uses a rechargeable lithium battery and includes a charging management unit and a power detection unit. The charging management unit is used to protect the lithium battery, and the power detection unit is used to detect the remaining power and push the power information to the intercom APP.

9. A voice alarm system based on an intercom device according to claim 2, characterized in that, The intercom app has an alarm record query module and a parameter setting module; the alarm record query module is used to store and query alarm information; the parameter setting module is used to set preset alarm voice feature values, vibration detection thresholds, and warning sounds.

10. A voice alarm method based on an intercom device, applied to the voice alarm system based on an intercom device as described in any one of claims 2-9, characterized in that, This includes active voice alarm methods and passive vibration alarm methods; The active voice alarm method includes the following steps: S101: The voice acquisition module collects surrounding voice information in real time and converts it into electrical signals, which are then sent to the voice processing module. S102: The voice processing module compares and matches the voice feature value corresponding to the electrical signal with the preset alarm voice feature value. If the matching degree reaches the preset threshold, an alarm voice command is generated and sent to the control module. S103: After receiving the alarm voice command, the control module sends it to the intercom APP of the handheld smart device of the associated emergency contact through the wireless connection module; S104: After receiving the alarm voice command, the intercom APP generates an alarm tone and / or alarm information to notify the emergency contact person; The passive vibration alarm method includes the following steps: S201: Turn on the control switch to start the vibration detection module and the sound playback module. The vibration detection module detects external vibration signals in real time. S202: The vibration detection module converts the detected vibration signal into an electrical signal and sends it to the control module; S203: When the intensity of the vibration signal detected by the vibration detection module is greater than the preset threshold, the control module starts the sound playback module to play the preset warning sound and generates an alarm voice command at the same time. S204: The control module sends alarm voice commands to the intercom APP of the handheld smart device of the associated emergency contact via the wireless connection module to complete the alarm.

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