A Walkie-Talkie Emergency Rescue Method and System Based on Ultra-Low Power Remote Wake-Up

Abstract

The present application provides an intercom emergency rescue method and system based on ultra-low power remote wake-up, which relates to the technical field of intercom emergency rescue. The method includes: switching the normal working mode to the ultra-low power mode according to the mode switching instruction generated by the triggered target emergency event; in the ultra-low power mode, performing signal monitoring on a preset communication frequency band according to a preset monitoring strategy to receive the wake-up signal broadcast by the first search and rescue user through the first search and rescue end intercom on the preset communication frequency band; in the case of determining that the wake-up signal is received from the preset communication frequency band, performing security verification on the wake-up signal to switch the ultra-low power mode to the normal working mode; in the normal working mode, performing the target distress operation. It solves the technical problem of low emergency rescue efficiency of the intercom in the ultra-low power mode in the related art, and achieves the technical effect of improving the emergency rescue efficiency of the intercom in the ultra-low power mode.

Description

Technical Field

[0001] This application relates to the technical field of walkie - talkie emergency rescue, and particularly to a walkie - talkie emergency rescue method and system based on ultra - low - power remote wake - up. Background Art

[0002] In recent years, emergency events such as natural disasters and accident disasters have occurred frequently, posing severe challenges to emergency rescue work. As an important communication device at the rescue site, the walkie - talkie needs to maintain a long battery life while ensuring a reliable signal response ability to play a key role in complex rescue environments.

[0003] In related technologies, when facing a sudden emergency, the user needs to continuously press the prominent red emergency button on the walkie - talkie for more than 3 seconds. After the built - in sensor of the walkie - talkie detects the continuous pressing action of the button, it immediately switches to the ultra - low - power mode. After entering the ultra - low - power mode, to minimize energy consumption, the walkie - talkie automatically shuts down the core signal receiving circuit of the radio frequency receiving module. At the same time, a deep sleep mechanism is enabled, that is, except for retaining a very small amount of circuits for maintaining basic timing and button detection functions, the remaining function modules related to signal reception enter the sleep state. This makes the walkie - talkie completely lose its wireless signal reception ability. When there is a communication need, the user must manually press a specific combination of keys again to wake up the walkie - talkie in the deep sleep state. After the walkie - talkie is awakened, it will restart the radio frequency receiving module and perform multiple polling scans on all communication frequency bands to try to capture any possible signals. Once a communication signal is captured, the walkie - talkie immediately mobilizes the built - in signal parsing algorithm to parse the communication signal. During the parsing process, even if it is initially judged that the communication signal has nothing to do with the rescue operation, the walkie - talkie will still try to establish a communication connection with the signal source that sent the communication signal to seize any potential communication opportunities that may be related to the rescue.

[0004] However, adopting the above - mentioned method not only consumes a large amount of time in the walkie - talkie wake - up stage, but also causes key rescue signals to be missed during the long - term rescue waiting process. Since the walkie - talkie needs to be manually awakened by the user to receive signals, when the trapped person is injured, unconscious, or unable to reach the walkie - talkie, the rescue signal cannot be responded to in time. In addition, frequently manually waking up the walkie - talkie will cause the walkie - talkie to perform full - band scans frequently, which may cause the battery power of the walkie - talkie to be quickly exhausted, and thus the emergency rescue efficiency of the walkie - talkie in the ultra - low - power mode in related technologies is relatively low. Summary of the Invention

[0005] This application provides a walkie - talkie emergency rescue method and system based on ultra - low - power remote wake - up, which is used to improve the emergency rescue efficiency of the walkie - talkie in the ultra - low - power mode.

[0006] In a first aspect, the present application provides an intercom emergency rescue method based on ultra-low power remote wake-up, which is applied to the above-mentioned intercom emergency rescue system based on ultra-low power remote wake-up. The method includes: switching the normal working mode to the ultra-low power mode according to a mode switching instruction generated by a target emergency event; after determining that the ultra-low power mode has been switched to, performing signal monitoring on a preset communication frequency band according to a preset monitoring strategy to receive a wake-up signal broadcast by a first search and rescue user on the preset communication frequency band through a first search and rescue end intercom, where the preset monitoring strategy is an alternately executed strategy of preset periodic sleep and timed monitoring; after determining that the wake-up signal is received from the preset communication frequency band, performing security verification on the wake-up signal to switch the ultra-low power mode to the normal working mode; after determining that the normal working mode has been switched to, performing a target distress operation.

[0007] By adopting the above technical solution, it can automatically switch to the ultra-low power mode when a target emergency event is triggered, reducing energy consumption. Using the preset monitoring strategy to monitor the preset communication frequency band can not only receive the wake-up signal but also reduce ineffective scanning and save power. After performing security verification on the wake-up signal, it switches to the normal working mode and performs the target distress operation. Thus, in an emergency rescue scenario, it can not only have a long battery life but also accurately and safely respond to rescue operations, significantly improving the reliability and stability of rescue communication. Furthermore, it solves the technical problem of low emergency rescue efficiency of the intercom in the ultra-low power mode in the related art and achieves the technical effect of improving the emergency rescue efficiency of the intercom in the ultra-low power mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a flowchart of an intercom emergency rescue method based on ultra-low power remote wake-up in an embodiment of the present application;

[0009] Figure 2 is a schematic hardware structure diagram of an intercom device module in an embodiment of the present application;

[0010] Figure 3 is a schematic working flowchart of an intercom emergency rescue system based on ultra-low power remote wake-up in an embodiment of the present application;

[0011] Figure 4 is a schematic working timing flowchart of a communication module in an embodiment of the present application;

[0012] Figure 5 is a schematic operation interface diagram of a search and rescue end intercom in an embodiment of the present application;

[0013] Figure 6 is a schematic entity device structure diagram of an intercom emergency rescue system based on ultra-low power remote wake-up in an embodiment of the present application. Detailed implementation manners

[0014] The terms used in the following embodiments of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. As used in the specification and appended claims of this application, the singular forms "a", "an", "the", "above-mentioned", "said", and "this" are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in this application refers to any or all possible combinations including one or more of the listed items.

[0015] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0016] This application provides an intercom emergency rescue method based on ultra-low power remote wake-up. Refer to Figure 1 , Figure 1 which is a flowchart of the intercom emergency rescue method based on ultra-low power remote wake-up in the embodiments of this application, and includes the following steps:

[0017] Step S101: Switch the normal working mode to the ultra-low power mode according to the mode switching instruction generated by the triggered target emergency event;

[0018] Step S102: When it is determined that the ultra-low power mode has been switched, monitor the signal on the preset communication frequency band according to the preset monitoring strategy to receive the wake-up signal broadcast by the first search and rescue user on the first search and rescue end intercom on the preset communication frequency band. The preset monitoring strategy is an alternately executed strategy of preset periodic sleep and timed monitoring;

[0019] Step S103: When it is determined that the wake-up signal is received from the preset communication frequency band, perform security verification on the wake-up signal to switch the ultra-low power mode to the normal working mode;

[0020] Step S104: When it is determined that the normal working mode has been switched, perform the target distress operation.

[0021] In the above embodiments, the target emergency event refers to various events that may threaten life or property safety and require triggering the emergency response of the trapped-end intercom. For example, earthquakes, fires, etc.; the mode switching instruction is a control signal used to instruct the trapped-end intercom to switch from the normal working mode to the ultra-low power consumption mode; the normal working mode refers to the working state in which the trapped-end intercom operates conventionally and has complete communication functions; the ultra-low power consumption mode refers to the working state in which the trapped-end intercom restricts the operation of some functions; the preset monitoring strategy is a pre-established rule used to guide the trapped-end intercom to perform signal monitoring in the ultra-low power consumption mode; the preset communication frequency band is a specific frequency range determined in advance for receiving rescue-related signals such as wake-up signals. There can be multiple preset communication frequency bands, and the trapped-end intercom can scan multiple preset communication frequency bands in a polling manner according to the preset scanning method to determine whether there is an effective wake-up signal. Among them, the preset scanning method includes, but is not limited to, the sequential scanning method (the trapped-end intercom scans each preset communication frequency band in sequence according to the preset frequency band order), the priority scanning method (according to the historical scanning data, the characteristics of the rescue area, and the preset priority rules, the trapped-end intercom preferentially scans the preset communication frequency bands that are more likely to receive effective wake-up signals), the frequency hopping scanning method (the trapped-end intercom scans by quickly switching between multiple preset communication frequency bands according to the preset frequency hopping sequence), the hybrid scanning method (flexibly adjusting the scanning strategy according to the actual situation. For example, in the initial stage, the sequential scanning method is used to cover all frequency bands, and then the priority scanning method or the frequency hopping scanning method is used to further confirm and receive the wake-up signal after detecting potential wake-up signals), etc.; the wake-up signal is a signal broadcast by the search and rescue user through the search and rescue-end intercom to wake up the trapped-end intercom in the ultra-low power consumption mode; the security verification refers to verifying the legality and effectiveness of the wake-up signal through specific algorithms and processes; the target distress operation refers to a series of actions for the trapped-end intercom to send a distress message to the search and rescue-end intercom after switching to the normal working mode.

[0022] Through the above steps, when the target emergency event is triggered, it can automatically switch to the ultra-low power consumption mode to reduce energy consumption. Using the preset monitoring strategy to monitor the preset communication frequency band can not only receive the wake-up signal but also reduce ineffective scanning and save power. After the security verification of the wake-up signal, it switches to the normal working mode and performs the target distress operation. Thus, in the emergency rescue scenario, it can not only have a long battery life but also accurately and safely respond to the rescue operation, significantly improving the reliability and stability of rescue communication. Furthermore, it solves the technical problem of the low emergency rescue efficiency of the intercom in the ultra-low power consumption mode in the related technology and achieves the technical effect of improving the emergency rescue efficiency of the intercom in the ultra-low power consumption mode.

[0023] Among them, the execution entity of the above steps can be an intercom system with ultra-low power consumption remote wake-up ability, such as an intercom emergency rescue system, etc., or a device with ultra-low power consumption remote wake-up ability, such as a trapped-end intercom, a search-and-rescue-end intercom, etc., or a controller or processor with ultra-low power consumption remote wake-up ability in a device or system, or a controller or processor with ultra-low power consumption remote wake-up ability existing alone, or it can also be other processing devices or processing units with similar processing functions, etc., but not limited thereto.

[0024] In an optional embodiment, the normal working mode is switched to the ultra-low power consumption mode according to the mode switching instruction triggered by the target emergency event, which specifically includes: performing a first trigger detection on the trapped user input signal or the environmental sensing signal to obtain an event trigger detection result; generating a mode switching instruction when it is determined that there is a target trigger signal according to the event trigger detection result, where the trapped user input signal includes the target trigger signal; or, when it is determined according to the event trigger detection result that there is an environmental vibration signal and the vibration intensity of the environmental vibration signal is greater than or equal to a preset vibration threshold, performing a first intensity detection on the first signal intensity of the current communication frequency band, where the environmental sensing signal includes the environmental vibration signal; generating a mode switching instruction when it is detected that the first signal intensity is less than a preset intensity threshold; determining a monitoring period according to the mode switching instruction and a preset monitoring strategy, where the monitoring period includes a sleep duration, a first monitoring duration, and a first monitoring frequency; entering the ultra-low power consumption sleep state according to the sleep duration, where the ultra-low power consumption mode includes the ultra-low power consumption sleep state.

[0025] In the above embodiments, the trapped user input signal refers to the signal input by the trapped person through the operation interface of the trapped-end intercom for triggering an emergency event response; the environmental sensing signal is the signal collected by various environmental sensors carried by the trapped-end intercom, reflecting the surrounding environmental state; the first trigger detection refers to the process of analyzing the trapped user input signal or the environmental sensing signal using a specific detection algorithm to determine whether an emergency event is triggered; the event trigger detection result is the output of the first trigger detection, used to indicate whether a signal for triggering an emergency event is detected; the target trigger signal is the trapped user input signal that can directly trigger the emergency event response of the trapped-end intercom; the environmental vibration signal is a type of environmental sensing signal, which can be collected by a vibration sensor and reflects the environmental vibration condition; the preset vibration threshold is a pre-set value used to determine whether the environmental vibration reaches the trigger condition; the first signal strength refers to the signal strength of the current communication frequency band; the preset strength threshold is a pre-set value used to determine whether the signal strength of the current communication frequency band meets the trigger condition; the monitoring period refers to the time period during which the trapped-end intercom performs sleep and signal monitoring in the ultra-low power consumption mode, including the sleep duration, the first monitoring duration, and the first monitoring frequency; the ultra-low power consumption sleep state is the working state in which the trapped-end intercom maintains the periodic monitoring signal function of the radio frequency module in the ultra-low power consumption mode.

[0026] In an alternative embodiment, when it is determined that the ultra-low power consumption mode has been switched to, signal monitoring is performed on a preset communication frequency band according to a preset monitoring strategy to receive a wake-up signal broadcast by a first search and rescue user on the preset communication frequency band through a first search and rescue end intercom, which specifically includes: when it is determined that the sleep duration has ended, switching from the ultra-low power consumption sleep state to the signal monitoring state, where the ultra-low power consumption mode includes the signal monitoring state; performing signal monitoring on the preset communication frequency band according to the first monitoring duration and the first monitoring frequency to obtain a signal monitoring result; when it is determined according to the signal monitoring result that the wake-up signal broadcast by the first search and rescue user on the preset communication frequency band through the first search and rescue end intercom is detected, receiving the wake-up signal from the preset communication frequency band; or, when it is determined according to the signal monitoring result that the wake-up signal is not detected and the monitoring duration has ended, re-entering the ultra-low power consumption sleep state according to the sleep duration.

[0027] In the above embodiments, the signal monitoring state is the working state in which the trapped-end intercom monitors the signal of the preset communication frequency band in the ultra-low power consumption mode; the signal monitoring result is the monitoring data obtained after the trapped-end intercom performs signal monitoring on the preset communication frequency band according to the first monitoring duration and the first monitoring frequency, used to indicate whether the wake-up signal is detected.

[0028] In the above embodiments, when the trapped-end intercom is in the ultra-low power consumption sleep state and the sleep duration ends, this step will be executed. Specifically, the trapped-end intercom switches from the ultra-low power consumption sleep state to the signal monitoring state, monitors the preset communication frequency band according to the first monitoring duration and the first monitoring frequency, and obtains the signal monitoring result. If the wake-up signal broadcast by the first search and rescue user through the first search and rescue end intercom on the preset communication frequency band is detected, the wake-up signal is received on the preset communication frequency band. If the wake-up signal is not detected and the monitoring duration has ended, the ultra-low power consumption sleep state is re-entered according to the sleep duration.

[0029] In an alternative embodiment, after re-entering the ultra-low power consumption sleep state according to the sleep duration when it is determined according to the signal monitoring result that the wake-up signal is not detected and the monitoring duration has ended, it specifically includes: performing a second intensity detection on the second signal strength of the preset communication frequency band within the sleep duration to determine the signal strength gradient value of the second signal strength; when it is determined that the signal strength gradient value is a positive gradient and the absolute value of the signal strength gradient is greater than the preset gradient threshold and the vibration intensity continuously exceeds the preset vibration threshold, increasing the first monitoring frequency to the second monitoring frequency according to the first preset proportionality coefficient and shortening the first monitoring duration to the second monitoring duration according to the first preset proportionality coefficient, where the absolute value of the signal strength gradient is a non-negative scalar value obtained by taking the modulus operation on the signal strength gradient value, the second monitoring frequency does not exceed the maximum allowable frequency, and the second monitoring duration is not less than the minimum guarantee duration; or, when it is determined that the signal strength gradient value is a negative gradient and the absolute value of the signal strength gradient is greater than the preset gradient threshold or the vibration intensity is lower than the preset vibration threshold, reducing the first monitoring frequency to the third monitoring frequency according to the second preset proportionality coefficient and extending the first monitoring duration to the third monitoring duration according to the second preset proportionality coefficient, where the second preset proportionality coefficient is less than the first preset proportionality coefficient; or, when it is determined that the absolute value of the signal strength gradient is less than or equal to the preset gradient threshold, maintaining the first monitoring frequency and the first monitoring duration.

[0030] In the above embodiments, the second signal strength is the signal strength of a preset communication frequency band in the ultra-low power consumption sleep state; the signal strength gradient value is used to represent the rate of change of the second signal strength over time; a positive gradient indicates that the signal strength increases over time, and a negative gradient indicates that the signal strength decreases over time; the preset gradient threshold is a pre-set value used to determine whether the signal strength gradient reaches the condition for adjusting the monitoring strategy; the first preset proportionality coefficient and the second preset proportionality coefficient are pre-set parameters for adjusting the monitoring frequency and the monitoring duration; the second monitoring frequency and the third monitoring frequency are the adjusted monitoring frequencies respectively; the second monitoring duration and the third monitoring duration are the adjusted monitoring durations respectively; the maximum allowable frequency is the highest monitoring frequency that the trapped-end walkie-talkie (or the search and rescue end walkie-talkie) can support; the minimum guarantee duration is the shortest duration to ensure that the trapped-end walkie-talkie (or the trapped-end walkie-talkie) can effectively monitor the signal.

[0031] In the above embodiments, when the trapped-end walkie-talkie does not detect a wake-up signal in the ultra-low power consumption mode and the monitoring duration ends, and after re-entering the ultra-low power consumption sleep state, this step will be executed. Specifically, within the sleep duration, the trapped-end walkie-talkie performs a second intensity detection on the second signal strength of the preset communication frequency band and calculates the signal strength gradient value. If the signal strength gradient value is a positive gradient and its absolute value is greater than the preset gradient threshold, and at the same time the vibration intensity continuously exceeds the preset vibration threshold, increase the first monitoring frequency by the first preset proportionality coefficient and shorten the first monitoring duration at the same time. If the signal strength gradient value is a negative gradient and its absolute value is greater than the preset gradient threshold, or the vibration intensity is lower than the preset vibration threshold, decrease the first monitoring frequency by the second preset proportionality coefficient and extend the first monitoring duration at the same time. If the absolute value of the signal strength gradient is less than or equal to the preset gradient threshold, keep the first monitoring frequency and the first monitoring duration unchanged.

[0032] In an alternative embodiment, when it is determined that a wake-up signal is received on the preset communication frequency band, before performing a security verification on the wake-up signal to switch the ultra-low power consumption mode to the normal working mode, the method further includes: entering a high-power transmission state at preset time intervals in the ultra-low power consumption sleep state, and emitting a first sound alarm signal and a first light flash alarm signal in the high-power transmission state, where the normal working mode includes the high-power transmission state; capturing a first satellite signal by using a target chip and determining first geographical location information according to the first satellite signal, where the first geographical location information includes the first longitude and latitude coordinates of the trapped person; generating a first radio alarm signal according to the first geographical location information and broadcasting the first radio alarm signal on the preset communication frequency band; receiving a first voice call returned by a second search and rescue end walkie-talkie on the preset communication frequency band, where the first voice call is triggered by the second search and rescue user according to the first radio alarm signal including the first geographical location information displayed on the first visualization interface of the second search and rescue end walkie-talkie.

[0033] In the above embodiments, the high-power transmission state is the operating state in which the trapped-end intercom transmits signals at a relatively high power, and the normal operating mode includes the high-power transmission state; the first sound alarm signal is a sound signal for warning emitted by the trapped-end intercom in the high-power transmission state; the first light flash alarm signal is a light signal for warning emitted by the trapped-end intercom in the high-power transmission state; the target chip is the chip in the trapped-end intercom for capturing satellite signals; the first satellite signal is a signal transmitted by a satellite and can be captured by the target chip; the first geographical location information is the location information of the trapped user determined according to the first satellite signal, including the first longitude and latitude coordinates; the first radio alarm signal is a distress signal generated according to the first geographical location information and broadcast through a preset communication frequency band; the first voice call is a voice call triggered by the second search and rescue user according to the first radio alarm signal displayed on the visualization interface of the second search and rescue end intercom.

[0034] In the above embodiments, when the trapped-end intercom is in the ultra-low power sleep state, this step will be executed before receiving the wake-up signal. Specifically, the trapped-end intercom enters the high-power transmission state at preset time intervals, emits the first sound alarm signal and the first light flash alarm signal to attract the attention of rescue personnel. At the same time, the target chip is used to capture the first satellite signal, and the first geographical location information is determined through a signal processing algorithm. The first radio alarm signal is generated according to the first geographical location information and broadcast on the preset communication frequency band. The first voice call returned by the second search and rescue end intercom is received from the preset communication frequency band. In some embodiments, the operations before receiving the wake-up signal can be implemented in various ways:

[0035] Optionally, at the hardware level, a timer is used to control the trapped-end intercom to periodically enter the high-power transmission state, and the first sound alarm signal and the first light flash alarm signal are emitted through an audio chip and a light-emitting diode respectively. A satellite positioning chip is used to capture the first satellite signal, and the signal is processed by a hardware control circuit to determine the first geographical location information, generate the first radio alarm signal, and broadcast it by a radio frequency module. The first voice call is received by the radio frequency module, and the content of the first voice call is played by the audio module.

[0036] Optionally, the built-in software timer of the trapped-end intercom is used to control the entry into the high-power transmission state, and the audio module and the display module are called through the built-in software to emit the first sound alarm signal and the first light flash alarm signal. The software program controls the satellite positioning chip to capture the first satellite signal, runs an algorithm to determine the first geographical location information, generates the first radio alarm signal, and broadcasts it through the radio frequency module driver program. The first voice call received is parsed by the software, and the audio module is called to play the content of the first voice call. It can be understood that other software and hardware collaboration methods can also be used to implement this series of operations, which are not limited here.

[0037] In an optional embodiment, when it is determined that a wake-up signal is received on a preset communication frequency band, the wake-up signal is subjected to security verification to switch the ultra-low power consumption mode to the normal working mode, specifically including: parsing the wake-up signal to determine the data frame structure of the wake-up signal, where the data frame structure includes a preamble, a wake-up ID field, a signal type field, and a check code field; using the preamble to determine the third signal strength of the wake-up signal and performing gain adjustment processing on the third signal strength; when it is determined that the gain adjustment processing is completed, using the preamble to perform carrier frequency synchronization processing on the wake-up signal; when it is determined that the carrier frequency synchronization processing is completed, extracting the target device identifier from the wake-up ID field and matching the target device identifier with its own device identifier; when it is determined that the target device identifier matches its own device identifier, using the check code field to perform cyclic redundancy check on the wake-up ID field and the signal type field to obtain a cyclic redundancy check result; when it is determined that the wake-up ID field and the signal type field pass the check according to the cyclic redundancy check result, parsing the signal type field to obtain the wake-up response parameter configuration; and switching the ultra-low power consumption mode to the normal working mode according to the wake-up response parameter configuration.

[0038] In the above embodiments, the data frame structure is the data organization form of the wake-up signal, including a preamble, a wake-up ID field, a signal type field, a check code field, etc.; the preamble is at the beginning of the data frame and is a specific code sequence for operations such as signal strength detection and carrier frequency synchronization; the wake-up ID field is used to store the target device identifier to determine the target intercom of the wake-up signal (i.e., the trapped-end intercom); the signal type field is used to indicate the specific instruction type of the wake-up signal; the check code field is used to check the wake-up ID field and the signal type field to ensure data accuracy; the third signal strength is the signal strength of the wake-up signal; the gain adjustment process is a process of adjusting the third signal strength of the wake-up signal through a specific algorithm to optimize the signal quality; the carrier frequency synchronization process is a process of making the carrier frequency of the signal received by the trapped-end intercom consistent with the carrier frequency of the wake-up signal; the target device identifier is the identifier of the target intercom specified by the wake-up signal; the own device identifier is the identifier of the trapped-end intercom itself; cyclic redundancy check is a commonly used data check algorithm for detecting errors in the data transmission process; the wake-up response parameter configuration is determined according to the instruction type of the wake-up signal and is used to switch the ultra-low power consumption mode to the normal working mode.

[0039] In the above embodiments, when the trapped-end intercom receives the wake-up signal in the preset communication frequency band, this step will be executed. Specifically, the trapped-end intercom parses the wake-up signal to determine its data frame structure. The third signal strength of the wake-up signal is determined using the preamble, and the gain adjustment process is performed. After the gain adjustment is completed, the carrier frequency synchronization process is performed using the preamble. After synchronization is completed, the target device identifier is extracted from the wake-up ID field and matched with the own device identifier. If the match is successful, the wake-up ID field and the signal type field are subjected to cyclic redundancy check using the check code field. After the check passes, the signal type field is parsed to obtain the wake-up response parameter configuration, and the ultra-low power consumption mode is switched to the normal working mode according to the configuration. In some embodiments, the security verification and mode switching of the wake-up signal can be achieved in various ways:

[0040] Optionally, a dedicated signal parsing chip is set in the intercom to parse the received wake-up signal to determine the data frame structure. The gain of the third signal strength is adjusted using an analog circuit, and the carrier frequency synchronization is achieved through a phase-locked loop circuit. The device identifier matching and cyclic redundancy check are performed in the hardware logic circuit. After the check passes, the working mode is switched by the hardware control circuit according to the wake-up response parameter configuration.

[0041] Optionally, the wake-up signal received is parsed by the built-in software of the walkie-talkie. Digital signal processing algorithms are used for signal strength gain adjustment and carrier frequency synchronization. Device identifier matching and cyclic redundancy check are performed in the software program. After the check passes, the system parameters are configured through the software to achieve the switching of the working mode. It can be understood that other software-hardware combination methods can also be used to implement this verification and switching process, which is not limited here.

[0042] In an optional embodiment, when it is determined that the normal working mode has been switched to, a target distress operation is performed, which specifically includes: performing a second trigger detection on the trapped user input signal or the environmental sensing signal to obtain a distress confirmation detection result; entering a high-power transmission state when it is determined that there is a target distress signal according to the distress confirmation detection result; emitting a second sound alarm signal and a second light flash alarm signal in the high-power transmission state; capturing a second satellite signal by using the target chip and determining second geographical location information according to the second satellite signal, where the second geographical location information includes the second longitude and latitude coordinates of the trapped user; generating a second radio alarm signal according to the second geographical location information and sending the second radio alarm signal to the first search and rescue end walkie-talkie on a preset communication frequency band; receiving a second voice call returned by the first search and rescue end walkie-talkie from the preset communication frequency band when it is determined that the second radio alarm signal has been sent to the first search and rescue end walkie-talkie, where the second voice call is triggered by the first search and rescue user according to the second radio alarm signal including the second geographical location information displayed on the second visual interface of the first search and rescue end walkie-talkie.

[0043] In the above embodiments, the trapped user input signal represents a signal input by the trapped person through the operation interface of the trapped-end intercom, intending to initiate a distress signal. For example, a signal generated by pressing the emergency distress button; the environmental sensing signal refers to environmental signals collected by various sensors carried by the intercom, such as smoke sensors, vibration sensors, etc., which can indirectly reflect whether a distress signal is needed; the second trigger detection is a process of using a specific algorithm to analyze the trapped user input signal or the environmental sensing signal to determine whether to trigger the distress process; the distress confirmation detection result is used to indicate the judgment result of the second trigger detection, that is, whether a target distress signal is detected; the target distress signal refers to a communication signal with a specific coding format sent by the trapped person through the trapped-end intercom or automatically triggered by the trapped-end intercom; the high-power transmission state is a working mode in which the intercom transmits signals at a higher power to enhance the signal propagation distance; the second sound alarm signal is a high-decibel warning sound emitted by the intercom in the high-power transmission state to attract the attention of the surrounding area; the second light flash alarm signal refers to a flashing strong light signal emitted by the intercom in the high-power transmission state to play a warning role; the target chip is a chip built into the intercom for capturing satellite signals and realizing the positioning function; the second satellite signal is emitted by the satellite and can be received by the target chip; the second geographical location information is obtained by analyzing the second satellite signal and includes the second longitude and latitude coordinates of the location where the trapped person is located; the second radio alarm signal is generated based on the second geographical location information and is a radio signal used to send the distress location information to the first rescue-end intercom; the preset communication frequency band is a specific frequency range set in advance and dedicated to rescue communication; the first rescue-end intercom is a communication device used by rescue personnel; the second voice call is a voice call initiated by the first rescue user after seeing the second radio alarm signal displayed on the second visual interface of the first rescue-end intercom.

[0044] In the above embodiments, the trapped person can also generate a signal for initiating a distress call in the following ways: Voice command trigger. The trapped-end intercom is configured with a voice recognition function. The trapped person only needs to say the preset distress keywords, such as "Help", "Distress", etc. After the trapped-end intercom recognizes them, it generates the corresponding distress signal. For example, in the earthquake ruins, if the trapped person's hands are buried and unable to operate the buttons, the distress call can be triggered by voice command. Gesture operation trigger. The trapped-end intercom supports a gesture sensing function. The trapped person makes a specific gesture, such as drawing a circle in the air, waving, etc. After the gesture sensor of the trapped-end intercom captures the movement, it analyzes and generates a distress signal. For example, in a fire scene where there is thick smoke and it is difficult for the trapped person to find the buttons, the distress signal can be sent through simple gesture operations. Intelligent terminal linkage trigger. Connect the trapped-end intercom to intelligent terminals such as mobile phones (smart bracelets, laptop computers, etc.). Install a supporting application on the intelligent terminal. When the trapped person clicks the distress button in the application or activates the preset one-key distress function, the distress signal can be transmitted to the trapped-end intercom via Bluetooth or Wi-Fi, and the trapped-end intercom will execute the subsequent distress process.

[0045] In the above embodiments, when the trapped-end intercom successfully switches to the normal working mode and is in an emergency rescue scenario, this step will be executed. Specifically, the trapped-end intercom performs a second trigger detection on the input signal of the trapped user or the environmental sensing signal to obtain a distress confirmation detection result. If the result indicates the existence of a target distress signal, the trapped-end intercom immediately enters the high-power transmission state, emits a second sound alarm signal and a second light flash alarm signal, and sends a distress warning to the surrounding environment. Use the target chip to capture the second satellite signal and process it through the built-in algorithm to determine the second geographical location information. Generate a second radio alarm signal based on this location information and send the second radio alarm signal to the first search and rescue end intercom in the preset communication frequency band. After confirming that the second radio alarm signal has been successfully sent, the trapped-end intercom waits to receive the second voice call returned by the first search and rescue end intercom in the preset communication frequency band. Once the second voice call is received, voice communication with the first search and rescue end intercom is allowed, realizing two-way communication between the trapped person and the search and rescue personnel.

[0046] In some embodiments, the target distress operation in the normal working mode can be achieved in multiple ways:

[0047] Optionally, at the hardware level, connect the user operation button to the signal detection circuit to collect the input signal from the trapped user, and at the same time connect various environmental sensors to collect environmental sensing signals. Perform the second trigger detection through the hardware logic circuit. When the target distress signal is detected, make the trapped-end intercom enter the high-power transmission state through the hardware control circuit. Use the audio module to drive the speaker to emit the second sound alarm signal, and control the light-emitting diode to emit the second light flash alarm signal through the LED drive circuit. Use the satellite positioning chip to capture the second satellite signal, process and determine the second geographical location information through the hardware control circuit, generate the second radio alarm signal, and send the second radio alarm signal in the preset communication frequency band by the radio frequency transmission module. The radio frequency receiving module is responsible for receiving the second voice call returned by the first search and rescue end intercom, and playing the content of the second voice call through the audio module.

[0048] Optionally, collect the input signal from the trapped user through the software of the trapped-end intercom and obtain the environmental sensing signal from the sensor driver program. Run the software algorithm for the second trigger detection. When the target distress signal is detected, make the trapped-end intercom enter the high-power transmission state through software configuration. Call the audio playback library to emit the second sound alarm signal, and control the display module to simulate the light flash effect to emit the second light flash alarm signal. The software program controls the satellite positioning chip to capture the second satellite signal, runs the algorithm to determine the second geographical location information, generates the second radio alarm signal, and sends it in the preset communication frequency band through the radio frequency module driver. The software parses the received second voice call and calls the audio module to play the content of the second voice call. It can be understood that other software and hardware combination methods can also be used to implement this series of operations, which are not limited here.

[0049] Through the embodiments of the present application, it can automatically switch to the ultra-low power consumption mode when the target emergency event is triggered, reducing energy consumption. Monitor the preset communication frequency band using the preset monitoring strategy, which can not only receive the wake-up signal but also reduce the invalid scanning, saving power. After the security verification of the wake-up signal, switch to the normal working mode and perform the target distress operation. Thus, in the emergency rescue scenario, it can not only have a long battery life but also accurately and safely respond to the rescue operation, significantly improving the reliability and stability of the rescue communication.

[0050] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The present invention will be specifically described below in conjunction with specific embodiments:

[0051] The embodiment of the present application provides an intercom emergency rescue system based on ultra-low power remote wake-up. This system consists of two or more function-enhanced intercom devices. According to different usage scenarios and roles, it can be divided into the distress radio (for the trapped) and the rescue radio (for the search and rescue personnel). Among them, the distress radio is pre-distributed to people who may face risks (such as outdoor adventurers, disaster area residents, etc.), and the rescue radio is used by search and rescue personnel. These two types of intercoms may be highly similar in terms of hardware, or even use the same hardware platform. The main difference lies in software configuration and usage scenarios. The rescue radio is used by search and rescue personnel, and its main functions are to remotely wake up the distress radio, receive the location information and voice signals sent by it, and conduct voice communication with the distress radio. The distress radio is carried by the trapped person, and its main functions are to enter the ultra-low power mode in case of emergency, wait for remote wake-up, automatically give a sound prompt and send location information after being woken up, and conduct voice communication with the rescue radio. That is, information interaction is carried out between the distress radio and the rescue radio through a wireless communication link, and direct communication between the intercoms is achieved without the support of complex intermediate infrastructure or base stations. In a typical application scenario, the trapped person carries the distress radio. Once an emergency occurs, press the emergency button on the intercom, and the device enters the ultra-low power mode. The search and rescue personnel use the rescue radio to search for the distress radio in the ultra-low power mode within a certain area range. Once the rescue radio searches for the target intercom device, it can send a remote wake-up signal to activate the distress radio, establish a communication link with the distress radio, obtain the location information and on-site situation of the trapped person, and carry out rescue operations.

[0052] Figure 2 It is a schematic diagram of the hardware structure of the intercom device module in the embodiment of the present application. Refer to Figure 2 This structure is a general-purpose hardware structure, which is applicable to both the trapped-end intercom device and the rescue-end intercom device. Its main functional modules include:

[0053] Processor: As the core control unit of the walkie-talkie device, it is responsible for the overall control and management of the walkie-talkie device (including mode switching, signal parsing, module coordination, power consumption control, etc.), that is, it is responsible for running the operating system, application programs, processing various instructions and data, and coordinating the work of each hardware module. Preferably, the processor can select an ultra-low-power ARM Cortex-M series microcontroller, such as the STM32L4 series, NXP LPC54000 series, etc. These processors have the advantages of high performance, ultra-low power consumption, high integration, etc., and can meet the performance and power consumption requirements of the walkie-talkie device. The processor integrates Flash (flash) memory and SRAM (static random access) memory for storing program code and runtime data. The processor also integrates rich peripheral interfaces, such as GPIO (general-purpose input / output interface), SPI (serial peripheral interface), I2C (inter-integrated circuit communication interface), UART (universal asynchronous receiver / transmitter), ADC (analog-to-digital converter), DAC (digital-to-analog converter), etc., for communicating and exchanging data with external modules.

[0054] Communication Module: Responsible for receiving and sending wireless signals to achieve wireless communication between walkie-talkie devices. The communication module includes, but is not limited to, peripheral devices such as radio frequency transceiver chips, antennas, filters, power amplifiers (PA), low-noise amplifiers (LNA), radio frequency switches, etc. In the ultra-low-power mode, the communication module can maintain an ultra-low-power listening state to receive wake-up signals. Preferably, the radio frequency transceiver chip can select an ultra-low-power radio frequency chip that supports the VHF band and UHF band. The VHF (136 - 174 MHz) band and UHF (400 - 470 MHz) band have the advantages of long propagation distance, good penetration, and strong diffraction ability, and are very suitable for use in complex rescue environments. For the VHF band, chips that support this band can be selected, such as TI CC1120, Silicon Labs Si4463, etc.; for the UHF band, chips such as TI CC1310, Silicon Labs EFR32FG14 can be selected. The communication module can support specific modulation and demodulation, such as 4FSK, etc. To achieve ultra-low-power listening, the communication module has an ultra-low-power receiving mode and fast wake-up ability.

[0055] Power Management Module: Responsible for the power supply and management of the walkie-talkie device, including battery charge and discharge control, voltage conversion, power consumption optimization, etc., to ensure long standby time in the ultra-low power consumption mode. The core of the power management module is the Power Management Integrated Circuit (PMIC). Preferably, a PMIC chip with high efficiency and ultra-low power consumption can be selected, such as TI TPS65090, Dialog DA9213, etc. The PMIC can support multiple power input methods, for example, USB charging, external power supply, etc. The PMIC can also provide multiple regulated outputs to provide stable and reliable power for various modules such as the processor, communication module, positioning module, sound module, etc. To achieve ultra-low power consumption, the PMIC can be equipped with an efficient DC-DC converter and a low-dropout linear regulator, and support dynamic voltage and frequency adjustment and power domain management, etc., to minimize the power consumption of the emergency rescue system.

[0056] Sound Module: Used to emit high-decibel sound signals after the walkie-talkie device wakes up to assist search and rescue personnel in positioning. The sound module can select a high-decibel buzzer or speaker, such as a piezoelectric buzzer, an electromagnetic buzzer, a micro speaker, etc. To improve the penetration of the sound, the sound pressure level of the buzzer or speaker should reach above 80dB, preferably above 100dB. The drive circuit of the sound module is simple and reliable with low power consumption. The processor can control the switch and ringing mode of the sound module through the GPIO interface, for example, continuous ringing, intermittent ringing, SOS signal, etc.

[0057] Positioning Module: Used to obtain the geographical location information of the walkie-talkie device. The positioning module can select a Global Navigation Satellite System (GNSS) receiver chip, such as GPS, Beidou, GLONASS, Galileo, etc. Preferably, a chip supporting multi-mode and multi-frequency GNSS can be selected to improve the positioning accuracy and reliability, such as chips like U-blox NEO-M8U, Quectel L76-M8N, etc. The GNSS chip has the characteristics of ultra-low power consumption, high sensitivity, fast positioning, etc. To improve the positioning performance in complex environments such as indoors and urban canyons, the positioning module can also integrate an Inertial Measurement Unit (IMU), such as an accelerometer, a gyroscope, a magnetometer, etc., to achieve GNSS / INS (Global Navigation Satellite System / Inertial Navigation System) integrated navigation. The positioning module communicates with the processor through the UART, SPI or I2C interface and transmits the positioning results (latitude and longitude coordinates, altitude, positioning accuracy, etc.) to the processor.

[0058] Emergency Button: Used for trapped people to quickly trigger the device to enter the ultra-low power mode or send an emergency alarm in case of an emergency. The emergency button can be a mechanical button or a capacitive touch button. The button should be designed to be large enough and easy to press, even in the dark or when the hands are inflexible for convenient operation. The emergency button is connected to the processor through the GPIO interface. When the button is pressed, an interrupt signal is generated to trigger the processor to perform corresponding operations.

[0059] User Interface: An optional component used to display device status, battery level, signal strength, location information, etc., and perform simple user operations. The user interface can include an LCD (Liquid Crystal Display) screen, an OLED (Organic Light-Emitting Diode) screen, LED indicators, buttons / touch keys, knobs, etc. The display screen can be a low-power monochrome or color LCD / OLED screen for displaying text, icons, numbers, and other information. LED indicators can be used to indicate the working status of the device, such as power indication, signal indication, alarm indication, etc. Buttons and knobs can be used for users to perform simple operations, such as channel switching, volume adjustment, mode selection, etc. The user interface communicates and controls data with the processor through the SPI, I2C, or GPIO interface.

[0060] Microphone and Speaker: Used to enable voice communication.

[0061] Software Configuration Differences between the Search and Rescue End Walkie-Talkie and the Trapped Person End Walkie-Talkie:

[0062] Although the search and rescue end walkie-talkie and the trapped person end walkie-talkie can adopt a common hardware structure in terms of hardware, there are differences in software configuration and functional emphasis to meet their respective application requirements:

[0063] 1) Emphasis on Software Configuration of the Search and Rescue End Walkie-Talkie:

[0064] Enhanced Wake-up Signal Sending Function: The software of the search and rescue end walkie-talkie has a user-friendly interface, which is convenient for search and rescue personnel to quickly select the target trapped person end walkie-talkie and generate and send remote wake-up signals. The software may support advanced functions such as batch wake-up and group wake-up to improve the search and rescue efficiency.

[0065] Map Display and Location Information Processing: The software of the search and rescue end walkie-talkie can integrate the electronic map display function, be able to receive and parse the location information from the trapped person end walkie-talkie in real time, and accurately display the location of the trapped people on the map. The software may also support auxiliary functions such as path planning, distance measurement, and location marking.

[0066] Enhanced communication function: The search and rescue end walkie-talkie may be configured with a higher transmission power and a more sensitive receiving module to ensure reliable communication with the trapped end walkie-talkie over longer distances and in more complex environments. (Of course, the search and rescue end walkie-talkie can also use a receiving module with the same transmission power and sensitivity as the trapped end walkie-talkie, mainly depending on the actual application scenario requirements).

[0067] Optimized voice communication function: The software of the search and rescue end walkie-talkie can support functions such as group call, priority call, call recording, etc., so as to facilitate the search and rescue team to carry out collaborative operations and information recording.

[0068] Command and dispatch function: The search and rescue end walkie-talkie can integrate more advanced command and dispatch software, such as group call, priority management, communication recording, etc., so as to facilitate the search and rescue team to carry out collaborative operations.

[0069] Device management and monitoring function: The software of the search and rescue end walkie-talkie can integrate device management functions to monitor information such as the battery status and signal strength of itself and the surrounding trapped end walkie-talkies, which is convenient for search and rescue personnel to carry out unified management and dispatch.

[0070] 2) Focus on the software configuration of the trapped end walkie-talkie:

[0071] Ultra-low power management: One of the core objectives of the software of the trapped end walkie-talkie is to minimize power consumption and extend the standby time. The software can finely manage the power consumption of each hardware module and adopt various ultra-low power technologies, such as deep sleep of the processor, peripheral clock gating, dynamic voltage and frequency adjustment, etc.

[0072] Reliable wake-up signal listening and response: The software of the trapped end walkie-talkie reliably implements periodic listening, accurately identifies and analyzes the wake-up signal from the search and rescue end walkie-talkie, and responds in a timely manner to switch to the normal working mode. The software has good anti-interference ability to avoid false wake-up.

[0073] Reliable execution of the automatic rescue function: The software of the trapped end walkie-talkie can ensure that after being woken up, it can reliably execute rescue actions such as automatic positioning, voice prompt, and location information sending without user intervention.

[0074] Simple and easy-to-use user interface: The user interface of the software of the trapped end walkie-talkie should be as simple as possible, and the operation process should be simplified as much as possible to facilitate users to quickly get started in an emergency. Even users who are not proficient in operation can easily use key functions such as the emergency button and sending an alarm.

[0075] The embodiment of the present application also provides a working process of a walkie-talkie emergency rescue system based on ultra-low power remote wake-up. Refer to Figure 3 , Figure 3It is a schematic diagram of a working process of an intercom emergency rescue system based on ultra-low power remote wake-up in an embodiment of the present application. The process includes the following steps:

[0076] Step S301, the trapped person is in an emergency;

[0077] Step S302, the trapped person presses the emergency button on the trapped-end intercom;

[0078] Step S303, the trapped-end intercom switches from the normal working mode to the ultra-low power mode according to the trigger of the emergency button;

[0079] Step S304, the trapped-end intercom periodically monitors the wake-up signal in the ultra-low power mode;

[0080] In the ultra-low power mode, the trapped-end intercom can also adopt a fixed monitoring strategy, that is, without relying on environmental monitoring or dynamic adjustment mechanisms, but through preset fixed monitoring duration and monitoring frequency to perform periodic signal monitoring on the preset communication frequency band. Specifically, in the ultra-low power mode, the trapped-end intercom alternates between a preset fixed sleep duration (for example, 5 seconds, etc.) and a fixed monitoring duration (for example, 100 milliseconds, etc.). The monitoring frequency (that is, the number of times of monitoring per unit time) also remains fixed (for example, monitoring once every 5 seconds, etc.). This fixed monitoring strategy does not need to rely on environmental sensors or signal strength detection, and can be implemented only through hardware timer control. During the fixed monitoring duration, the trapped-end intercom quickly scans the preset communication frequency band. If a wake-up signal that meets the format is detected, the security verification process is immediately started. Since the monitoring duration and frequency are fixed, the power consumption of the trapped-end intercom can be precisely controlled, and there is no need for complex dynamic adjustment algorithms, which further simplifies the design of the emergency rescue system and improves reliability. This fixed monitoring strategy is applicable to scenarios with stable environmental conditions or extremely strict power consumption requirements. For example, in long-term standby applications with limited battery capacity and infrequent battery replacement, the fixed monitoring strategy can ensure that the trapped-end intercom operates continuously for several months or even longer in the ultra-low power state, while still being able to reliably capture the wake-up signal.

[0081] Step S305, the rescue-end intercom broadcasts a wake-up signal on the preset communication frequency band;

[0082] Step S306, when the trapped-end intercom monitors a wake-up signal on the preset communication frequency band, the system is automatically activated (that is, switches from the ultra-low power mode to the normal working mode);

[0083] Step S307, the trapped-end intercom emits a siren and performs positioning through the satellite positioning module in the normal working mode;

[0084] Step S308, the search and rescue end walkie-talkie receives the target distress signal and geographical location information sent by the trapped end walkie-talkie through a preset communication frequency band;

[0085] Step S309, when the search and rescue end walkie-talkie receives the target distress signal and geographical location information, the search and rescue personnel view the location of the trapped person through the search and rescue end walkie-talkie;

[0086] Step S310, when the search and rescue personnel view the location of the trapped person through the search and rescue end walkie-talkie, the search and rescue personnel initiate a voice call to the trapped end walkie-talkie by pressing the PPT button of the search and rescue end walkie-talkie;

[0087] Step S311, in the case that the trapped end walkie-talkie receives the voice call initiated by the search and rescue end walkie-talkie, the trapped person directly answers the voice of the search and rescue personnel through the trapped end walkie-talkie;

[0088] Step S312, when the trapped person directly answers the voice of the search and rescue personnel through the trapped end walkie-talkie, the trapped person initiates a voice call to the search and rescue end walkie-talkie by pressing the trapped end walkie-talkie, or the trapped end walkie-talkie automatically initiates a voice call to the search and rescue end walkie-talkie;

[0089] Step S313, in the case that the search and rescue end walkie-talkie receives the voice call initiated by the trapped end walkie-talkie, the search and rescue personnel directly answer the voice of the trapped person through the search and rescue end walkie-talkie;

[0090] Step S314, when the search and rescue personnel directly answer the voice of the trapped person through the search and rescue end walkie-talkie, rescue the trapped person;

[0091] Step S315, the search and rescue personnel conduct continuous voice calls with the trapped end walkie-talkie of the trapped person. Thus, in real-time and effective information interaction, the search and rescue personnel can accurately grasp the situation of the trapped person, environmental details and potential risks to help the trapped person successfully escape.

[0092] It should also be noted that the execution order of the above step S304 and the above step S305 is not sequential. It can be that the above step S304 is executed before the above step S305, or the above step S305 is executed before the above step S304, or the above step S304 and the above step S305 are executed simultaneously, etc. This is not limited here.

[0093] The embodiment of the present application also provides a working timing process of a communication module based on ultra-low power remote wake-up. Refer to Figure 4 , Figure 4 which is a schematic diagram of a working timing process of the communication module in the embodiment of the present application. The process includes the following steps:

[0094] Step S401, the intercom at the trapped end enters an emergency sleep state, automatically enters the sleep mode, and maintains the corresponding sleep duration.

[0095] In an emergency, the trapped person presses the emergency button on the intercom at the trapped end. After the processor detects the emergency button press event, it immediately performs a mode switching operation to switch the intercom at the trapped end to the ultra-low power mode. In the ultra-low power mode, the processor enters the deep sleep state, turns off or hibernates non-essential modules such as the positioning module, sound module, and display screen, and only keeps the communication module in the ultra-low power listening state, waiting to receive the wake-up signal (corresponding to the above wake-up signal). At this time, the overall power consumption of the intercom at the trapped end drops to the lowest level and can be ignored.

[0096] To minimize the power consumption of the intercom device in the standby state, optimization design can be carried out from both the hardware and software levels. At the hardware level, components such as ultra-low power processors, RF chips, power management chips, and GNSS chips can be selected and manufactured using advanced ultra-low power processes. At the software level, deep sleep mode, clock gating, power gating, dynamic voltage and frequency adjustment, etc. can be adopted to minimize the system power consumption. In the ultra-low power mode, the overall power consumption of the intercom device should be controlled at the microampere level or even the nanoampere level to achieve a standby time of several months or longer.

[0097] Wake-up signal format and protocol: To ensure the reliability and anti-interference ability of remote wake-up, a specific wake-up signal format and communication protocol are set. The wake-up signal can adopt low-speed and reliable wireless modulation methods, such as frequency shift keying (FSK) or Gaussian frequency shift keying (GFSK), etc. To improve the anti-interference ability, spread spectrum such as frequency hopping spread spectrum (FHSS) or direct sequence spread spectrum (DSSS) can also be adopted. In addition, to enhance security, the data packet of the wake-up signal can be encrypted using an encryption algorithm to prevent unauthorized users from maliciously waking up or interfering. The data frame structure of the wake-up signal can include:

[0098] Preamble: Used for the receiving end to perform signal detection, automatic gain control (AGC), and frequency synchronization.

[0099] Wake-up ID (Pagingrx / Pagingtx): Contains the unique basic wake-up signal of the target device to be woken up and optional packet wake-up signals.

[0100] Signal type field (Command Type Field): An optional field that can be used to expand the function of the wake-up signal. For example, different signal types can be defined to achieve different wake-up actions or parameter configurations.

[0101] Checksum / CRC Field: Used for data verification to ensure the reliability of wake-up signal transmission and prevent data errors caused by wireless channel interference. Check algorithms such as cyclic redundancy check (CRC) or checksum can be adopted.

[0102] Step S402: The trapped-end intercom switches from the sleep state to the listening state in the ultra-low power consumption mode and listens for wake-up signals during the listening duration.

[0103] In the ultra-low power consumption mode, the communication module included in the trapped-end intercom wakes up periodically from the deep sleep state to listen for a preset wake-up signal in the air. The listening period can be set to several hundred milliseconds or several seconds, etc., and the listening duration can be set to several tens of milliseconds, etc.

[0104] To achieve reliable listening in ultra-low power consumption, the trapped-end intercom adopts periodic listening. The communication module is not continuously in the working state, but in the ultra-low power consumption mode, it works periodically with a very low duty cycle. During each listening period, the communication module is briefly activated to quickly scan and detect wake-up signals on the preset frequency channels (corresponding to the above-mentioned preset communication frequency bands). The time parameters of the listening period (such as listening duration, sleep duration, listening frequency, etc.) can be finely configured and optimized according to actual application requirements and power consumption budgets to minimize the average power consumption of the RF receiving module, thereby achieving ultra-long standby of the trapped-end intercom.

[0105] Step S403: The trapped-end intercom quickly scans and switches frequency channels in the listening state.

[0106] During listening, the communication module quickly scans the preset wake-up frequencies and channels to detect whether there is a wake-up signal in the correct format. Once a wake-up signal is detected, it immediately sends a wake-up signal to the processor and switches the intercom device to the normal working mode. During sleep, the communication module and other non-essential modules enter the deep sleep state to minimize power consumption.

[0107] Step S404: The search and rescue personnel preset the wake-up ID of the target search and rescue device (corresponding to the above-mentioned target device identifier) through the search and rescue end intercom.

[0108] The wake-up ID of the search and rescue device can be preset before the search and rescue. According to different search and rescue scenarios, you can choose to customize and add the wake-up ID of the target search and rescue device (for example, in the field exploration search and rescue scenario where the number of walkie-talkies at the trapped end is small, etc.), or choose the grouped search and rescue device wake-up ID (for example, in the emergency disaster relief scenario where the number of walkie-talkies at the trapped end is large, and the same grouped search and rescue device wake-up ID is preset for all walkie-talkies at the trapped end) to set the wake-up ID of the target search and rescue device. You can also not set the wake-up ID of the target search and rescue device, which will wake up all the trapped-end walkie-talkies in the ultra-low power consumption mode to rule out the scenario where it is difficult to screen the wake-up ID of the target search and rescue device.

[0109] Step S405, when the trapped-end walkie-talkie does not detect a wake-up signal within the monitoring duration, it automatically enters the sleep state;

[0110] Step S406, the search and rescue end walkie-talkie broadcasts a wake-up signal on the preset communication frequency band;

[0111] Figure 5 It is a schematic diagram of a visual operation interface of the walkie-talkie emergency rescue system in an embodiment of the present application. Refer to Figure 5 , which intuitively presents the real-time position distribution of the search and rescue tasks through a map, and combines relevant information to achieve efficient command and dispatch. The large gray hollow double-ring marks in the map represent the positions of the search and rescue end walkie-talkies and search and rescue personnel, and the 3 gray solid dots around the gray hollow double-ring marks indicate the positions of the trapped-end walkie-talkies and trapped personnel that need to be rescued. Among them, the gray hollow double-ring mark and the 3 gray solid dots can distinguish the distribution of the positions of the search and rescue personnel and the trapped personnel through other marking methods such as color, position, size, and shape. The difference in the style of the marking symbols or additional text descriptions can help the search and rescue personnel quickly identify key information and locate the trapped personnel. In the search and rescue list at the bottom of the map, the specific information of the trapped personnel is listed in detail, including numbers (#2381 and #1947, etc.), and the distances between the trapped personnel numbered #2381 and #1947 and the search and rescue personnel (1.2 kilometers and 2.8 kilometers respectively). These specific information can help the search and rescue personnel quickly formulate a rescue action plan according to the distance and priority. The "Channel A-7" displayed in the upper right corner of the search and rescue list represents the current wireless communication channel used by the search and rescue end walkie-talkie, enabling the search and rescue team to communicate efficiently through a unified channel. The bottom of the operation interface contains three key function buttons. The "Send Wake-up" button on the left may be used to notify the target device or search and rescue team members and trigger relevant operations; the "Call Record" button in the middle is used to view and manage the communication history; the "Settings" button on the right provides an entry for adjusting the parameters of the walkie-talkie emergency rescue system. The overall interface is centered on a clear map navigation, and can effectively transmit key information through the combination of position, text, and markings, enabling the search and rescue personnel to quickly make rescue decisions in case of emergency.

[0112] It should also be noted that the above visual operation interface and map engine can be integrated into the search and rescue terminal walkie-talkie. It can also be connected to a mobile terminal device (such as a mobile phone, IPAD, laptop computer, etc., not limited here) or a smart wearable device (such as a smart watch, AR glasses, rescue-specific head-mounted display device, etc., not limited here) via Bluetooth or OTG (electronic device data exchange technology) through the search and rescue terminal walkie-talkie, so that the mobile terminal device or smart wearable device can obtain the geographical coordinates of the trapped terminal walkie-talkie received by the search and rescue terminal walkie-talkie, and then display the specific location of the trapped terminal walkie-talkie on the visual map interface of the dedicated APP according to the geographical coordinates.

[0113] The search and rescue personnel use the search and rescue terminal walkie-talkie, select the trapped person's terminal walkie-talkie through the operation interface (which can be based on a preset device wake-up ID or group wake-up ID), and then click the "Send Wake-up Signal" button. The search and rescue terminal walkie-talkie generates a wake-up signal including the device identifier of the trapped person's terminal walkie-talkie and broadcasts it on a preset wireless communication frequency. That is, the search and rescue personnel can send a specific wireless wake-up signal to the trapped person's terminal walkie-talkie in the ultra-low power consumption mode through the search and rescue terminal walkie-talkie. After receiving the correct wireless wake-up signal, the trapped person's terminal walkie-talkie can automatically switch from the ultra-low power consumption mode to the normal working mode and execute the preset rescue actions.

[0114] Step S407, when the trapped terminal walkie-talkie is in the sleep state, it does not respond to the wake-up signal broadcast by the search and rescue terminal walkie-talkie on the preset communication frequency band;

[0115] Step S408, when the sleep duration ends, the trapped terminal walkie-talkie automatically switches from the sleep state to the next listening state (i.e., the new listening state) and listens for the wake-up signal within the next listening duration (i.e., the new listening duration);

[0116] Step S409, when the search and rescue terminal walkie-talkie does not receive a response from the trapped terminal walkie-talkie, it continuously broadcasts the wake-up signal on the preset communication frequency band;

[0117] Step S410, when the trapped terminal walkie-talkie listens for the wake-up signal within the new listening state, it verifies that the wake-up ID matches;

[0118] When the trapped person's terminal walkie-talkie in the ultra-low power consumption listening mode receives a wake-up signal during the periodic listening process, it first verifies whether the device identifier in the wake-up signal matches its own device identifier. If it matches, it confirms that it is a valid wake-up signal sent by the search and rescue terminal walkie-talkie.

[0119] To ensure the directivity and safety of wake-up execution, a two-level identification matching strategy is adopted. That is, each trapped person's walkie-talkie sets a wake-up ID during the initialization phase (i.e., the device identifier, which may include the above-mentioned target device identifier, and the setting of this device identifier can be modified according to actual needs). When the search and rescue end walkie-talkie sends a wake-up signal, it will set the wake-up ID of the trapped person's walkie-talkie to be woken up in the data packet of the wake-up signal. After the trapped person's walkie-talkie to be woken up listens to and receives the wake-up signal, it will first parse the data packet, extract the device identifier field therein (corresponding to the above-mentioned wake-up ID field), and precisely match the target device identifier with its own preset device identifier. When the target device identifier is exactly the same as its own preset device identifier, the trapped person's walkie-talkie will respond to the wake-up signal and perform subsequent wake-up operations, thus effectively avoiding false wake-up and ensuring the pertinence and safety of the wake-up operation. Especially in complex rescue scenarios with multiple trapped person's walkie-talkies, it can achieve precise wake-up and positioning of specific devices.

[0120] Step S411, when the trapped end walkie-talkie verifies that the wake-up signal sent by the search and rescue end walkie-talkie is a valid wake-up signal, it immediately switches from the ultra-low power consumption mode to the normal working mode (i.e., the trapped end walkie-talkie is woken up by the wake-up signal).

[0121] The remote wake-up mechanism is based on asynchronous paging. The search and rescue end walkie-talkie broadcasts a wake-up signal including the wake-up ID of the target search and rescue device through wireless communication. This wake-up method can be asynchronous, and the search and rescue end walkie-talkie can initiate a wake-up at any time without prior synchronization or time negotiation with the trapped person's walkie-talkie. This asynchronous paging mechanism simplifies the wake-up operation process and improves the flexibility and response speed of the walkie-talkie emergency rescue system.

[0122] To further improve the rescue success rate, the trapped person's walkie-talkie can also have an automatic wake-up function. Users (including but not limited to trapped persons and search and rescue personnel, etc.) can preset the time interval for automatic wake-up. In the ultra-low power consumption mode, the trapped person's walkie-talkie will automatically wake up from the deep sleep state at the preset time interval in the ultra-low power consumption mode, perform operations such as automatic positioning and sending location information, and then enter the ultra-low power consumption mode again. The automatic wake-up function can ensure that even if the trapped person completely loses the ability to operate, or when the search and rescue personnel have not sent a remote wake-up signal, the trapped person's walkie-talkie can still continuously send distress signals and provide continuous rescue guarantee. To save power, the automatic wake-up function can be set to automatically stop when the battery power is lower than a certain threshold. Users can send instructions through the search and rescue end walkie-talkie in a non-emergency state to cancel or reconfigure the automatic wake-up function of the trapped person's walkie-talkie.

[0123] Step S412: After the trapped-end intercom switches to the normal working mode, it activates the sound module and emits a sound signal.

[0124] After the trapped person's intercom switches to the normal working mode, it activates the sound module to control the buzzer or speaker to emit a preset high-decibel sound signal for a period of time (e.g., 30 seconds, 50 seconds, 1 minute, etc., which is not limited here).

[0125] Step S413: The trapped-end intercom performs automatic positioning in the normal working mode.

[0126] The processor included in the trapped-end intercom activates the positioning module and starts the GNSS receiving chip for positioning. The GNSS chip quickly captures satellite signals and calculates the geographical location information of the current trapped person's intercom.

[0127] After the trapped person's intercom is awakened, it can quickly and accurately obtain its own position information and send it to the search and rescue end intercom. To achieve fast positioning, the following methods can be adopted:

[0128] 1) GNSS fast startup: Select a GNSS receiving chip that supports fast startup, optimize the startup process and parameter configuration of the GNSS chip, and shorten the first positioning time (i.e., the time required for the positioning module to obtain the first valid position coordinates from startup). For example, the Assisted Global Navigation Satellite System (A-GNSS) can be used to accelerate satellite ephemeris download and positioning calculation using network-assisted data.

[0129] 2) GNSS hot startup and warm startup: When not positioning for the first time, use the cached data and previous positioning information of the GNSS chip to achieve hot startup and warm startup, further shortening the positioning time.

[0130] 3) GNSS / INS integrated navigation: Integrate an Inertial Measurement Unit (IMU), such as an accelerometer and a gyroscope, and perform data fusion with the GNSS receiver to achieve GNSS / INS integrated navigation. In an environment where GNSS signals are weak or blocked, use the inertial navigation ability of the IMU for position estimation to improve the continuity and reliability of positioning.

[0131] 3) Ultra-low power positioning algorithm: Adopt an ultra-low power GNSS positioning algorithm to reduce the power consumption during positioning and extend the battery life. For example, an intermittent positioning mode can be adopted to reduce the positioning frequency and save electrical energy in scenarios where continuous high-precision positioning is not required.

[0132] 4) High-decibel sound prompt design: Sound prompt is an important means to assist search and rescue personnel in quickly locating trapped personnel. To ensure the effectiveness of the sound prompt, the sound module has the following characteristics:

[0133] High sound pressure level output: Select a high-decibel buzzer or speaker to ensure that the sound signal can still be effectively heard in a noisy environment. The sound output intensity should reach 100 dB or higher to ensure sufficient penetration and coverage.

[0134] Optimized sound frequency and mode: Select the sound frequency range sensitive to the human ear, such as the 1kHz - 3kHz frequency band, etc., to improve the recognition of the sound signal. The sound mode can be set to intermittent beeping, SOS signal, or frequency scanning mode, etc., to increase the uniqueness and recognizability of the sound signal. The sound mode can be flexibly adjusted through preset configuration or remote instructions.

[0135] Ultra-low power sound drive circuit: Design an efficient and ultra-low power sound drive circuit to reduce the working power consumption of the sound module and extend the battery usage time.

[0136] Step S414, after the automatic positioning is completed, the processor packs the geographical location information and sends it to the search and rescue end walkie-talkie in a wireless communication manner through the communication module;

[0137] Step S415, after the search and rescue end walkie-talkie receives the geographical location information sent by the trapped end walkie-talkie, it initiates a voice call to the trapped end walkie-talkie;

[0138] After the search and rescue end walkie-talkie receives the position information from the trapped person's walkie-talkie, the software application parses the position data, extracts information such as longitude and latitude coordinates, and marks the position of the trapped person on the built-in electronic map. The search and rescue personnel can intuitively view the geographical location of the trapped person through the display screen of the search and rescue end walkie-talkie.

[0139] Step S416, after the trapped end walkie-talkie receives the voice call initiated by the search and rescue end walkie-talkie, it broadcasts the voice;

[0140] After the automatic positioning and voice prompt are completed, both the intercom on the trapped side and the intercom on the search and rescue side enter the communication standby state, waiting to establish a voice communication link. The search and rescue personnel can initiate a voice call to the awakened intercom on the trapped side through the operation interface of the search and rescue side intercom. After receiving the voice call, the intercom on the trapped side can directly play the voice sent by the search and rescue side intercom, so that the trapped person can quickly confirm the rescue command signal and respond. For example, when the search and rescue personnel inform through voice that "your position has been located, please save your energy and wait for demolition", the trapped person can immediately hear the clear voice command and cooperate with the action. In addition, when the trapped person falls into confusion due to injury, fatigue or lack of oxygen in the environment, the intercom on the trapped side can actively intervene to prevent the situation from worsening. For example, under the collapsed ruins, the trapped person may gradually lose consciousness due to being trapped for a long time. At this time, the intercom on the trapped side will sense the reduced limb activity or abnormal physiological indicators of the trapped person through the built-in sensors (such as motion detection or heart rate monitoring, etc.), automatically trigger the voice broadcast function, and use short and repeated voice commands ("Rescue has arrived, please knock on the objects around you to respond") to try to wake up their attention. If the trapped person still does not respond, the intercom on the trapped side will switch to high-frequency pulse sound, similar to the short and sharp sound of the fire alarm. This sound design has strong penetration in noisy environments and avoids panic caused by continuous noise. If the environment is extreme (such as heavy rain, mechanical roar, etc.), the intercom on the trapped side will link the external microphone to analyze the background noise, dynamically increase the volume to more than 120 decibels, and simultaneously start the body vibration motor to enhance the awakening effect through tactile stimulation. In a confined and narrow space (such as an earthquake interlayer), the sharp sound may be too harsh due to the echo, so it can be adjusted to a gradually increasing tone, gradually rising from a low beep, so that the trapped person has time to adapt, and at the same time, it forms a multi-sensory warning with a flashing red LED light. After all alarms are triggered, the trapped person's intercom can transmit the trapped person's status and location back to the rescue intercom in real time, ensuring that the rescue team simultaneously initiates emergency plans, such as giving priority to the medical team or adjusting the search and rescue route. This process does not require manual operation, but relies on the trapped person's intercom to make real-time judgments on the environment and the status of the trapped person, which can avoid missing the golden rescue time and reduce interference caused by accidental touches.

[0141] Step S417, after the trapped person hears the voice of the rescuer through the trapped-end intercom, he / she initiates a voice call to the rescue-end intercom through the trapped-end intercom;

[0142] The trapped person presses the PTT button on the trapped person's intercom to send a conversation voice to the rescuer's search and rescue intercom, and releases the PTT button to receive the other party's voice.

[0143] When the trapped person is conscious and able to perform simple operations, the emergency alarm function can be manually triggered by long-pressing the emergency button or through voice commands (e.g., "Send alarm", "Emergency help", etc.). After triggering the emergency alarm, the intercom at the trapped person's end immediately emits a high-priority alarm signal. The alarm signal can include:

[0144] Sound alarm, controlling the sound module to emit an alarm sound that is different from the remote wake-up, more rapid or shrill, to indicate a higher level of emergency.

[0145] Light flash alarm, controlling the LED indicator to flash rapidly to produce a visual warning effect.

[0146] Radio alarm signal, through the communication module, broadcasting a radio signal containing emergency alarm information on a specific frequency or channel. This radio alarm signal can be received and recognized by nearby search and rescue end intercoms or other devices with compatible receiving capabilities, thus quickly transmitting the distress message.

[0147] Automatically enter the high-power transmission mode. In order to increase the coverage range of the alarm signal, when sending an emergency alarm, the intercom at the trapped person's end can automatically switch to the high-power transmission mode to increase the transmission power of the radio signal.

[0148] Step S418, after the search and rescue end intercom receives the voice call initiated by the trapped end intercom, it broadcasts the voice;

[0149] Step S419, after the search and rescue personnel hear the voice of the trapped person through the search and rescue end intercom, they initiate multiple voice calls to the trapped end intercom again through the search and rescue end intercom;

[0150] Step S420, after the trapped end intercom receives the multiple voice calls initiated again by the search and rescue end intercom, it broadcasts the voice;

[0151] Step S421, after the trapped person hears the multiple voices of the search and rescue personnel through the trapped end intercom, they initiate multiple voice calls to the search and rescue end intercom again through the trapped end intercom;

[0152] Step S422, after the search and rescue end intercom receives the multiple voice calls initiated again by the trapped end intercom, it broadcasts the voice.

[0153] Next, the intercom emergency rescue system based on ultra-low power remote wake-up in the embodiment of the present invention application will be described from the perspective of hardware processing. Refer to Figure 6 , Figure 6 which is a schematic structural diagram of an entity device of the intercom emergency rescue system based on ultra-low power remote wake-up in the embodiment of the present application.

[0154] It should be noted that Figure 6The structure of the walkie-talkie emergency rescue system based on ultra-low power remote wake-up shown is only an example, and should not impose any limitations on the functions and usage scope of the embodiments of the present invention.

[0155] As Figure 6 shown, the walkie-talkie emergency rescue system based on ultra-low power remote wake-up includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage section 608 into the random access memory (RAM) 603, such as executing the methods described in the above embodiments. In the RAM 603, various programs and data required for system operation are also stored. The CPU 601, ROM 602, and RAM 603 are connected to each other via a bus 604. The input / output (I / O) interface 605 is also connected to the bus 604.

[0156] The following components are connected to the I / O interface 605: an input section 606 including an audio input device, a button switch, etc.; an output section 607 including a liquid crystal display (LCD), an audio output device, an indicator light, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A driver 610 is also connected to the I / O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the driver 610 as needed, so that the computer program read from it can be installed into the storage section 608 as needed.

[0157] Specifically, according to the embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments of the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication section 609, and / or installed from the removable medium 611. When the computer program is executed by the central processing unit (CPU) 601, various functions defined in the present invention are executed.

[0158] It should be noted that specific examples of computer-readable storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In the present invention, a computer-readable storage medium may be any tangible medium that contains or stores a program, and the program can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0159] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present invention. Among them, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the above module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings.

[0160] Specifically, the walkie-talkie emergency rescue system based on ultra-low power remote wake-up in this embodiment includes a processor and a memory, and a computer program is stored on the memory. When the computer program is executed by the processor, the walkie-talkie emergency rescue method based on ultra-low power remote wake-up provided in the above embodiment is implemented.

[0161] On the other hand, the present invention also provides a computer-readable storage medium, which may be included in the walkie-talkie emergency rescue system based on ultra-low power remote wake-up described in the above embodiment; or it may exist separately and not be assembled into the walkie-talkie emergency rescue system based on ultra-low power remote wake-up. The above storage medium carries one or more computer programs. When the above one or more computer programs are executed by a processor of the walkie-talkie emergency rescue system based on ultra-low power remote wake-up, the walkie-talkie emergency rescue system based on ultra-low power remote wake-up is enabled to implement the walkie-talkie emergency rescue method provided in the above embodiment.

[0162] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application.

[0163] Those of ordinary skill in the art can understand all or part of the processes in the methods of the above embodiments. These processes can be completed by relevant hardware instructed by a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The foregoing storage media include: various media such as ROM or random access memory RAM, magnetic disks, or optical discs that can store program codes.

Claims

1. A walkie-talkie emergency rescue method based on ultra-low power remote wake-up, characterized in that, Including: Switch the normal working mode to the ultra-low power consumption mode according to the mode switching instruction triggered by the target emergency event. Among them, perform a first trigger detection on the trapped user input signal or the environmental sensing signal to obtain an event trigger detection result. When determining the environmental vibration signal according to the event trigger detection result and the vibration intensity of the environmental vibration signal is greater than or equal to the preset vibration threshold, perform a first intensity detection on the first signal intensity of the current communication frequency band. Among them, the environmental sensing signal includes the environmental vibration signal. When detecting that the first signal intensity is less than the preset intensity threshold, generate the mode switching instruction; When it is determined that the ultra-low power consumption mode has been switched to, perform signal monitoring on the preset communication frequency band according to the preset monitoring strategy to receive the wake-up signal broadcast by the first search and rescue user through the first search and rescue terminal walkie-talkie on the preset communication frequency band. Among them, the preset monitoring strategy is an alternating execution strategy of preset periodic sleep and timing monitoring; When it is determined that the wake-up signal is received from the preset communication frequency band, perform security verification on the wake-up signal to switch the ultra-low power consumption mode to the normal working mode; When it is determined that the normal working mode has been switched to, perform the target distress operation; When it is determined according to the signal monitoring result that the wake-up signal has not been monitored and the first monitoring duration has ended, after re-entering the ultra-low power consumption sleep state according to the sleep duration, specifically including: Perform a second intensity detection on the second signal intensity of the preset communication frequency band within the sleep duration to determine the signal intensity gradient value of the second signal intensity. Among them, the signal monitoring result is obtained by performing signal monitoring on the preset communication frequency band according to the first monitoring duration and the first monitoring frequency; When it is determined that the signal intensity gradient value is a positive gradient and the absolute value of the signal intensity gradient is greater than the preset gradient threshold, and the vibration intensity continuously exceeds the preset vibration threshold, increase the first monitoring frequency to the second monitoring frequency according to the first preset proportional coefficient and shorten the first monitoring duration to the second monitoring duration according to the first preset proportional coefficient. Among them, the absolute value of the signal intensity gradient is a non-negative scalar value obtained by performing a modulo operation on the signal intensity gradient value. The second monitoring frequency does not exceed the maximum allowable frequency, and the second monitoring duration is not less than the minimum guarantee duration; or, When it is determined that the signal intensity gradient value is a negative gradient and the absolute value of the signal intensity gradient is greater than the preset gradient threshold or the vibration intensity is lower than the preset vibration threshold, reduce the first monitoring frequency to the third monitoring frequency according to the second preset proportional coefficient and extend the first monitoring duration to the third monitoring duration according to the second preset proportional coefficient. Among them, the second preset proportional coefficient is less than the first preset proportional coefficient; or, When it is determined that the absolute value of the signal intensity gradient is less than or equal to the preset gradient threshold, keep the first monitoring frequency and the first monitoring duration.

2. The method according to claim 1, wherein The mode switching instruction generated according to the target emergency switches the normal working mode to the ultra-low power consumption mode, which specifically includes: Generating the mode switching instruction when it is determined that there is a target trigger signal according to the event trigger detection result, wherein the trapped user input signal includes the target trigger signal; Determining the monitoring period according to the mode switching instruction and the preset monitoring strategy, wherein the monitoring period includes the sleep duration, the first monitoring duration, and the first monitoring frequency; Entering the ultra-low power consumption sleep state according to the sleep duration, wherein the ultra-low power consumption mode includes the ultra-low power consumption sleep state.

3. The method according to claim 2, characterized in that When it is determined that the ultra-low power consumption mode has been switched to, signal monitoring is performed on the preset communication frequency band according to the preset monitoring strategy to receive the wake-up signal broadcast by the first search and rescue user on the preset communication frequency band through the first search and rescue end walkie-talkie, which specifically includes: When it is determined that the sleep duration has ended, switching from the ultra-low power consumption sleep state to the signal monitoring state, wherein the ultra-low power consumption mode includes the signal monitoring state; Performing signal monitoring on the preset communication frequency band according to the first monitoring duration and the first monitoring frequency to obtain a signal monitoring result; When it is determined according to the signal monitoring result that the wake-up signal broadcast by the first search and rescue user on the preset communication frequency band through the first search and rescue end walkie-talkie is detected, receiving the wake-up signal from the preset communication frequency band; or, When it is determined according to the signal monitoring result that the wake-up signal is not detected and the first monitoring duration has ended, re-entering the ultra-low power consumption sleep state according to the sleep duration.

4. The method according to claim 2, wherein Before performing security verification on the wake-up signal to switch the ultra-low power consumption mode to the normal working mode when it is determined that the wake-up signal is received from the preset communication frequency band, the method further includes: In the ultra-low power consumption sleep state, entering the high-power transmission state according to a preset time interval, and emitting a first sound alarm signal and a first light flash alarm signal in the high-power transmission state, wherein the normal working mode includes the high-power transmission state; Capturing a first satellite signal by using a target chip, and determining first geographical location information according to the first satellite signal, wherein the first geographical location information includes the first longitude and latitude coordinates of the trapped user; Generating a first radio alarm signal according to the first geographical location information, and broadcasting the first radio alarm signal on the preset communication frequency band; Receiving a first voice call returned by a second search and rescue end walkie-talkie from the preset communication frequency band, wherein the first voice call is triggered by the second search and rescue user according to the first radio alarm signal including the first geographical location information displayed on the first visualization interface of the second search and rescue end walkie-talkie.

5. The method according to claim 1, wherein When it is determined that the wake-up signal is received from the preset communication frequency band, performing security verification on the wake-up signal to switch the ultra-low power consumption mode to the normal working mode, which specifically includes: Parse the wake-up signal to determine the data frame structure of the wake-up signal, where the data frame structure includes a preamble, a wake-up ID field, a signal type field, and a check code field; Use the preamble to determine the third signal strength of the wake-up signal and perform gain adjustment processing on the third signal strength; When it is determined that the gain adjustment processing has been completed, use the preamble to perform carrier frequency synchronization processing on the wake-up signal; When it is determined that the carrier frequency synchronization processing has been completed, extract the target device identifier from the wake-up ID field and match the target device identifier with its own device identifier; When it is determined that the target device identifier matches its own device identifier, use the check code field to perform cyclic redundancy check on the wake-up ID field and the signal type field to obtain a cyclic redundancy check result; When it is determined that the wake-up ID field and the signal type field pass the check according to the cyclic redundancy check result, parse the signal type field to obtain wake-up response parameter configuration; Switch the ultra-low power consumption mode to the normal working mode according to the wake-up response parameter configuration.

6. The method according to any one of claims 1-5, characterized in that When it is determined that the normal working mode has been switched to, perform a target distress operation, which specifically includes: Perform a second trigger detection on the trapped user input signal or the environmental sensing signal to obtain a distress confirmation detection result; When it is determined that there is a target distress signal according to the distress confirmation detection result, enter the high-power transmission state; Emit a second sound alarm signal and a second light flash alarm signal in the high-power transmission state; Use a target chip to capture a second satellite signal and determine second geographical location information according to the second satellite signal, where the second geographical location information includes the second longitude and latitude coordinates of the trapped user; Generate a second radio alarm signal according to the second geographical location information and send the second radio alarm signal to the first search and rescue terminal walkie-talkie on the preset communication frequency band; When it is determined that the second radio alarm signal has been sent to the first search and rescue terminal walkie-talkie, receive a second voice call returned by the first search and rescue terminal walkie-talkie from the preset communication frequency band, where the second voice call is triggered by the first search and rescue user according to the second radio alarm signal including the second geographical location information displayed on the second visual interface of the first search and rescue terminal walkie-talkie.

7. An intercom emergency rescue system based on ultra-low power remote wake-up, characterized in that, The walkie-talkie emergency rescue based on ultra-low power remote wake-up includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the walkie-talkie emergency rescue based on ultra-low power remote wake-up to execute the method according to any one of claims 1-6.

8. A computer-readable storage medium, comprising instructions, characterized in that, When the instruction runs on the walkie-talkie emergency rescue based on ultra-low power remote wake-up, the walkie-talkie emergency rescue based on ultra-low power remote wake-up executes the method described in any one of claims 1-6.

9. A computer program product, characterized in that, When the computer program product runs on the walkie-talkie emergency rescue based on ultra-low power remote wake-up, the walkie-talkie emergency rescue based on ultra-low power remote wake-up executes the method described in any one of claims 1-6.

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