Interphone emergency rescue method and system based on ultra-low power consumption remote wakeup

Abstract

The invention provides an interphone emergency rescue method and system based on ultra-low power consumption remote wakeup, and relates to the technical field of interphone emergency rescue, and the method comprises the steps: switching a normal working mode to an ultra-low power consumption mode according to a mode switching instruction generated by triggering a target emergency event; in the ultra-low power consumption mode, performing signal monitoring on a preset communication frequency band according to a preset monitoring strategy so as to receive a wake-up signal broadcasted by a first search and rescue user on the preset communication frequency band through a first search and rescue end interphone; 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 a normal working mode; and in the normal working mode, executing the target help-seeking operation. The technical problem that the emergency rescue efficiency of the interphone in the ultra-low power consumption mode is low in the prior art is solved, and the technical effect of improving the emergency rescue efficiency of the interphone in the ultra-low power consumption mode is achieved.

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 scene, the walkie-talkie needs to maintain a reliable signal response ability while ensuring long-term battery life, so as to play a key role in complex rescue environments.

[0003] In the related art, 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, in order to minimize energy consumption, the walkie-talkie will automatically turn off 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 invokes 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 in order to seize any potential communication opportunities related to the rescue.

[0004] However, adopting the above method not only consumes a lot of time in the wake-up stage of the walkie-talkie, but also causes key rescue signals to be missed during the long 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, frequent manual wake-up of 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 the related art 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; in the case of determining that the ultra-low power mode has been switched, 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; in the case of determining that a wake-up signal has been 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 case of determining that the normal working mode has been switched, 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 wake-up signals but also reduce ineffective scans, saving 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 intercoms in the ultra-low power mode in the related art, achieving the technical effect of improving the emergency rescue efficiency of intercoms 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; Figure 2 is a schematic hardware structure diagram of an intercom device module in an embodiment of the present application; 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; Figure 4 is a schematic working timing flowchart of a communication module in an embodiment of the present application; Figure 5 is a schematic operation interface diagram of a search and rescue end intercom in an embodiment of the present application; 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 DESCRIPTION OF THE EMBODIMENTS

[0009] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of the present 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 the present application refers to any or all possible combinations including one or more of the listed items.

[0010] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and should not 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 the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0011] The present application provides a walkie-talkie emergency rescue method based on ultra-low power remote wake-up. Refer to Figure 1 , Figure 1 which is a schematic flowchart of a walkie-talkie emergency rescue method based on ultra-low power remote wake-up in the embodiments of the present application, and includes the following steps: 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; Step S102, when it is determined that the ultra-low power mode has been switched, monitor the signal of 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 end walkie-talkie on the preset communication frequency band, where the preset monitoring strategy is an alternately executed strategy of preset periodic sleep and timed monitoring; 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; Step S104, when it is determined that the normal working mode has been switched, perform the target distress operation.

[0012] 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 pre-established and is a 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 pre-determined and is a specific frequency range used to receive 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 methods include, but are 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 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 after detecting potential wake-up signals to further confirm and receive 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 and is used 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.

[0013] 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.

[0014] 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 independently, or it can also be other processing devices or processing units with similar processing functions, etc., but not limited thereto.

[0015] 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 input signal of the trapped user 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 input signal of the trapped user 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.

[0016] 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 using a specific detection algorithm to analyze the trapped user input signal or the environmental sensing signal 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 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 to reflect the environmental vibration situation; the preset vibration threshold is a value set in advance for judging 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 value set in advance for judging 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.

[0017] 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 through a first search and rescue end intercom on the preset communication frequency band. Specifically, it 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 through the first search and rescue end intercom on the preset communication frequency band 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.

[0018] 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.

[0019] 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 is 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, it re-enters the ultra-low power consumption sleep state according to the sleep duration.

[0020] 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 proportional coefficient and shortening the first monitoring duration to the second monitoring duration according to the first preset proportional 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 proportional coefficient and extending the first monitoring duration to the third monitoring duration according to the second preset proportional coefficient, where 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 strength gradient is less than or equal to the preset gradient threshold, maintaining the first monitoring frequency and the first monitoring duration.

[0021] 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 change rate of the second signal strength over time; a positive gradient indicates that the signal strength rises over time, and a negative gradient indicates that the signal strength drops over time; the preset gradient threshold is a preset 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 preset parameters used to adjust the monitoring frequency and 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 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 trapped-end walkie-talkie) can effectively monitor the signal.

[0022] 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.

[0023] In an alternative embodiment, when it is determined that a wake-up signal is received from the preset communication frequency band and 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 using a target chip and determining first geographical location information based on 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 based on 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, where the first voice call is triggered by the second search and rescue user based on the first radio alarm signal including the first geographical location information displayed on the first visual interface of the second search and rescue end walkie-talkie.

[0024] 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 emitted by the trapped-end intercom for warning in the high-power transmission state; the first light flash alarm signal is a light signal emitted by the trapped-end intercom for warning in the high-power transmission state; the target chip is the chip in the trapped-end intercom used to capture 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.

[0025] 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 multiple ways: 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 through the radio frequency module, and the content of the first voice call is played by the audio module.

[0026] Optionally, the built-in software timer of the trapped-end intercom is used to control the entry into the high-power transmission state. The audio module and the display module are called through the built-in software to emit a first sound alarm signal and a 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 a 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 cooperation methods can also be used to implement this series of operations, which are not limited here.

[0027] In an alternative 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 operating mode. Specifically, it includes: 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 operating mode according to the wake-up response parameter configuration.

[0028] 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 to adjust the third signal strength of the wake-up signal through a specific algorithm to optimize the signal quality; the carrier frequency synchronization process is to make 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 wake-up signal instruction type and is used to switch the ultra-low power consumption mode to the normal working mode.

[0029] 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: 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 third signal strength is adjusted in gain 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 hardware control circuit switches the working mode according to the wake-up response parameter configuration.

[0030] Optionally, the wake-up signal received is parsed by the built-in software of the walkie-talkie. The digital signal processing algorithm is used to adjust the signal strength gain and synchronize the carrier frequency. The 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 implement the switching of the working mode. It can be understood that other software and hardware combination methods can also be used to implement this verification and switching process, which is not limited here.

[0031] In an optional embodiment, when it is determined that the normal working mode has been switched to, the 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 the 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.

[0032] 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, which plays 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 of the trapped person; 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 search and rescue end intercom; the preset communication frequency band is a specific frequency range set in advance and dedicated to rescue communication; the first search and rescue end intercom is a communication device used by search and rescue personnel; the second voice call is a voice call initiated by the first search and rescue user after seeing the second radio alarm signal displayed on the second visual interface of the first search and rescue end intercom.

[0033] 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 walkie-talkie 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 walkie-talkie recognizes them, it generates a corresponding distress signal. For example, in the earthquake ruins, if the trapped person's hands are buried and unable to operate the buttons, they can trigger the distress call through voice commands. Gesture operation trigger: The trapped-end walkie-talkie supports a gesture sensing function. The trapped person makes specific gestures, such as drawing a circle in the air, waving, etc. After the gesture sensor of the trapped-end walkie-talkie captures the movement, it analyzes and generates a distress signal. For example, at the fire scene, with thick smoke filling the air, it is difficult for the trapped person to find the buttons, and they can send a distress signal through simple gesture operations. Intelligent terminal linkage trigger: Connect the trapped-end walkie-talkie 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, they can transmit the distress signal to the trapped-end walkie-talkie via Bluetooth or Wi-Fi, and the trapped-end walkie-talkie will execute the subsequent distress process.

[0034] In the above embodiments, when the trapped-end walkie-talkie successfully switches to the normal working mode and is in an emergency rescue scenario, this step will be executed. Specifically, the trapped-end walkie-talkie 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 walkie-talkie 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 walkie-talkie in the preset communication frequency band. After confirming the successful transmission of the second radio alarm signal, the trapped-end walkie-talkie waits to receive the second voice call returned by the first search and rescue walkie-talkie in the preset communication frequency band. Once the second voice call is received, it allows voice communication with the first search and rescue walkie-talkie to achieve two-way communication between the trapped person and the search and rescue personnel.

[0035] In some embodiments, the target distress operation in the normal working mode can be achieved in multiple ways: Optionally, at the hardware level, connect the user operation button to the signal detection circuit to collect the input signal of 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 realizing the playback of the second voice call content through the audio module.

[0036] Optionally, collect the input signal of 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 realize the playback of the second voice call content. It can be understood that other combinations of software and hardware can also be used to implement this series of operations, which are not limited here.

[0037] 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. Use the preset monitoring strategy to monitor the preset communication frequency band, which can not only receive the wake-up signal but also reduce the ineffective scanning, saving power. After the security verification of the wake-up signal, switch to the normal working mode and execute the target distress operation, so that 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.

[0038] 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: 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 of the trapped person and the rescue radio of the search and rescue personnel. Among them, the distress radio of the trapped person is a walkie-talkie pre-distributed to people who may face risks (such as outdoor adventurers, disaster area residents, etc.), and the rescue radio of the search and rescue personnel is a walkie-talkie used by search and rescue personnel. These two types of walkie-talkies may be highly similar in terms of hardware, and 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 function is to remotely wake up the distress radio of the trapped person, receive the location information and voice signals sent by it, and conduct voice communication with the distress radio of the trapped person. The distress radio of the trapped person is carried by the trapped person, and its main function is to enter the ultra-low power mode in case of emergency, wait for remote wake-up, automatically issue a sound prompt and send location information after being woken up, and conduct voice communication with the rescue radio. That is, information is exchanged between the distress radio of the trapped person and the rescue radio through a wireless communication link, and communication between the walkie-talkies is directly carried out without the support of complex intermediate infrastructure or base stations. In a typical application scenario, the trapped person carries the distress radio of the trapped person. Once an emergency occurs, press the emergency button on the walkie-talkie, and the device enters the ultra-low power mode. The search and rescue personnel use the rescue radio to search for the distress radio of the trapped person in the ultra-low power mode within a certain area. Once the rescue radio searches for the target walkie-talkie device, it can send a remote wake-up signal to activate the distress radio of the trapped person, establish a communication link with the distress radio of the trapped person, obtain the location information and on-site situation of the trapped person, and carry out rescue operations.

[0039] Figure 2 is a schematic diagram of a 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 walkie-talkie device and the rescue-end walkie-talkie device. Its main functional modules include: 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.

[0040] Communication Module: Responsible for receiving and transmitting 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.

[0041] 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 each module 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.

[0042] 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 80 dB, preferably above 100 dB. The drive circuit of the sound module is simple, reliable, and has 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.

[0043] 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.

[0044] Emergency Button: Used for trapped persons 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, enabling convenient operation even in the dark or when the hands are inflexible. 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.

[0045] 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 by 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 SPI, I2C, or GPIO interfaces.

[0046] Microphone and Speaker: Used to enable voice communication.

[0047] Software Configuration Differences between the Search and Rescue End Walkie-Talkie and the Trapped Person End Walkie-Talkie: Although the search and rescue end walkie-talkie and the trapped person end walkie-talkie can adopt a common hardware structure, there are differences in software configuration and functional emphasis to meet their respective application requirements: 1) Software Configuration Emphasis of the Search and Rescue End Walkie-Talkie: Enhanced Wake-up Signal Sending Function: The software of the search and rescue end walkie-talkie has a user-friendly interface, facilitating 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 search and rescue efficiency.

[0048] Map Display and Location Information Processing: The software of the search and rescue end walkie-talkie can integrate an electronic map display function, capable of receiving and parsing location information from the trapped person end walkie-talkie in real time and accurately displaying the locations of trapped persons on the map. The software may also support auxiliary functions such as path planning, distance measurement, and location marking.

[0049] 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 at a longer distance and in a more complex environment. (Of course, the search and rescue end walkie-talkie can also adopt a receiving module with the same transmission power and sensitivity as the trapped end walkie-talkie, mainly depending on the actual application scenario requirements).

[0050] 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 that the search and rescue team can carry out collaborative operations and information recording.

[0051] 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 that the search and rescue team can carry out collaborative operations.

[0052] 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, facilitating unified management and dispatch by search and rescue personnel.

[0053] 2) Focus on the software configuration of the trapped end walkie-talkie: 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.

[0054] 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.

[0055] Reliable execution of the automatic rescue function: The software of the trapped end walkie-talkie can ensure that after being awakened, it can reliably execute rescue actions such as automatic positioning, voice prompt, and location information sending without user intervention.

[0056] 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.

[0057] 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: Step S301, the trapped person is in an emergency. Step S302, the trapped person presses the emergency button of the trapped-end intercom. 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. Step S304, the trapped-end intercom periodically monitors the wake-up signal in the ultra-low power mode. 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 durations and monitoring frequencies to perform periodic signal monitoring on a 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 monitoring times per unit time) also remains fixed (for example, monitoring once every 5 seconds, etc.). This fixed monitoring strategy does not require relying on environmental sensors or signal strength detection, and can be achieved 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. Due to the fixed monitoring duration and frequency, the power consumption of the trapped-end intercom can be precisely controlled, and there is no need for complex dynamic adjustment algorithms, further simplifying the design of the emergency rescue system and improving 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 in the ultra-low power state for several months or even longer, while still being able to reliably capture wake-up signals.

[0058] Step S305, the rescue-end intercom broadcasts a wake-up signal on the preset communication frequency band. 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). Step S307, the trapped-end intercom emits an alarm sound and locates through the satellite positioning module in the normal working mode. Step S308, the rescue-end intercom receives the target distress signal and geographical location information sent by the trapped-end intercom through the preset communication frequency band. Step S309, when the rescue-end intercom receives the target distress signal and geographical location information, the rescue personnel view the location of the trapped person through the rescue-end intercom. 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; Step S311, when 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; Step S312, when the trapped person directly hears 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; Step S313, when 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; Step S314, when the search and rescue personnel directly hear the voice of the trapped person through the search and rescue end walkie-talkie, implement rescue on the trapped person; 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.

[0059] It should also be noted that the execution order of the above step S304 and the above step S305 is not in sequence. 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., which is not limited here.

[0060] The embodiment of the present application also provides an operating timing process of a communication module based on ultra-low power remote wake-up. Refer to Figure 4 , Figure 4 is a schematic diagram of an operating timing process of the communication module in the embodiment of the present application. This process includes the following steps: Step S401, the trapped end walkie-talkie is in an emergency sleep state, automatically enters the sleep state, and maintains the corresponding sleep duration; In an emergency, the trapped person presses the emergency button on the trapped person's walkie-talkie. After the processor detects the emergency button press event, it immediately performs a mode switching operation to switch the trapped person's walkie-talkie to the ultra-low power mode. In the ultra-low power mode, the processor enters the deep sleep state, closes or hibernates non-essential modules such as the positioning module, sound module, and display screen, and only keeps the communication module in an 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 trapped person's walkie-talkie drops to the lowest and can be ignored.

[0061] To minimize the power consumption of the walkie-talkie 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, GNSS chips, etc. 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 walkie-talkie device should be controlled at the microampere level or even the nanoampere level to achieve a standby time of several months or even longer.

[0062] 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 a low-speed and reliable wireless modulation method, for example, 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: Preamble: Used for the receiving end to perform signal detection, automatic gain control (AGC), and frequency synchronization.

[0063] Wake-up ID (Pagingrx / Pagingtx): Contains the unique basic wake-up signal of the target device to be woken up and an optional packet wake-up signal.

[0064] 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.

[0065] Checksum / CRC field: Used for data verification to ensure the reliability of the wake-up signal transmission and prevent data errors caused by wireless channel interference. Checksum algorithms such as cyclic redundancy check (CRC) or checksum can be adopted.

[0066] Step S402, the walkie-talkie at the trapped end switches from the sleep state to the listening state in the ultra-low-power mode and listens for the wake-up signal during the listening duration; In the ultra-low-power mode, the communication module included in the walkie-talkie at the trapped end wakes up periodically from the deep sleep state to listen for whether there is 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.

[0067] To achieve reliable monitoring under ultra-low power consumption, the intercom on the trapped person's side adopts periodic monitoring. The communication module does not operate continuously. Instead, in the ultra-low power mode, it operates periodically with an extremely low duty cycle. During each monitoring cycle, 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 monitoring cycle (e.g., monitoring duration, sleep duration, monitoring frequency, etc.) can be refined and optimized according to actual application requirements and power consumption budgets to minimize the average power consumption of the RF receiving module, thereby achieving extremely long standby for the intercom on the trapped side.

[0068] Step S403: The intercom on the trapped side quickly scans and switches frequency channels in the monitoring state; During monitoring, 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.

[0069] Step S404: The rescuer presets the wake-up ID of the target search and rescue device through the intercom on the rescue side (corresponding to the above-mentioned target device identifier); 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, one can choose to custom-add the wake-up ID of the target search and rescue device (e.g., in a wilderness exploration search and rescue scenario with a small number of intercoms on the trapped side, etc.), or choose to group the wake-up IDs of the search and rescue devices (e.g., in an emergency disaster relief scenario with a large number of intercoms on the trapped side, where all intercoms on the trapped side are preset with the same grouped wake-up ID of the search and rescue device) to set the wake-up ID of the target search and rescue device. One can also choose not to set the wake-up ID of the target search and rescue device, in which case all intercoms on the trapped side in the ultra-low power mode will be awakened to rule out scenarios where it is difficult to screen the wake-up ID of the target search and rescue device.

[0070] Step S405: When the intercom on the trapped side does not detect a wake-up signal within the monitoring duration, it automatically enters the sleep state; Step S406: The intercom on the rescue side broadcasts a wake-up signal on the preset communication frequency band; Figure 5 It is a schematic diagram of a visual operation interface of the intercom emergency rescue system in an embodiment of the present application. Refer to Figure 5, the real-time location distribution of search and rescue tasks is visually presented on the map, and efficient command and dispatch are achieved by combining relevant information. The large gray hollow double-ring marks on the map represent the positions of the search and rescue end walkie-talkies and search and rescue personnel, while the three gray solid dots around the gray hollow double-ring marks indicate the positions of the trapped end walkie-talkies and trapped personnel in need of rescue. Among them, the gray hollow double-ring marks and the three gray solid dots can distinguish the distribution of the positions of search and rescue personnel and 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 search and rescue personnel quickly identify key information and locate 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, #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 search and rescue personnel quickly formulate a rescue operation plan based on the distance and priority. The "Channel A-7" displayed in the upper right corner of the search and rescue list represents the wireless communication channel currently 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 to trigger relevant operations; the "Call Record" button in the middle is used to view and manage communication history records; 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 clear map navigation, and key information can be effectively transmitted through the combination of position, text, and marks, enabling search and rescue personnel to quickly make rescue decisions in case of emergencies.

[0071] It should also be noted that the above-mentioned visual operation interface and map engine can be integrated into the search and rescue end 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) through Bluetooth or OTG (electronic device data exchange technology) by the search and rescue end walkie-talkie, so that the mobile terminal device or smart wearable device can obtain the geographical coordinates of the trapped end walkie-talkie received by the search and rescue end walkie-talkie, and then display the specific position of the trapped end walkie-talkie on the visual map interface of the dedicated APP according to the geographical coordinates.

[0072] Search and rescue personnel use the search and rescue end walkie-talkie. Through the operation interface, they select the trapped end walkie-talkie (which can be based on the preset device wake-up ID or group wake-up ID), and then click the "Send Wake-up Signal" button. The search and rescue end walkie-talkie generates a wake-up signal including the device identifier of the trapped end walkie-talkie and broadcasts it on the preset wireless communication frequency. That is, search and rescue personnel can send a specific wireless wake-up signal to the trapped end walkie-talkie in the ultra-low power consumption mode through the search and rescue end walkie-talkie. After receiving the correct wireless wake-up signal, the trapped end walkie-talkie can automatically switch from the ultra-low power consumption mode to the normal working mode and execute the preset rescue actions.

[0073] Step S407, when the trapped end walkie-talkie is in the sleep state, it does not respond to the wake-up signal broadcast by the search and rescue end walkie-talkie on the preset communication frequency band; Step S408, when the sleep duration ends, the trapped end 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); Step S409, when the search and rescue end walkie-talkie does not receive a response from the trapped end walkie-talkie, it continuously broadcasts the wake-up signal on the preset communication frequency band; Step S410, when the trapped end walkie-talkie listens for and receives the wake-up signal in this new listening state, it verifies that the wake-up ID matches; The trapped end walkie-talkie in the ultra-low power consumption listening mode, after receiving the wake-up signal during the periodic listening process, 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 end walkie-talkie.

[0074] To ensure the directivity and security of wake-up execution, a two-level identification matching strategy is adopted. That is, each trapped end walkie-talkie sets a wake-up ID (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) during the initialization phase. When the search and rescue end walkie-talkie sends a wake-up signal, it will set the wake-up ID of the trapped end walkie-talkie to be woken up in the data packet of the wake-up signal. The trapped end walkie-talkie to be woken up, after listening for and receiving the wake-up signal, will first parse the data packet, extract the device identifier field therein (corresponding to the above-mentioned wake-up ID field), and perform an exact match between the target device identifier and its own preset device identifier. When the target device identifier is exactly the same as its own preset device identifier, the trapped end walkie-talkie will respond to the wake-up signal and execute the subsequent wake-up operations, thus effectively avoiding mis-wake-up and further ensuring the pertinence and security of the wake-up operation. Especially in a complex rescue scenario with multiple trapped end walkie-talkies, it can achieve precise wake-up and positioning of specific devices.

[0075] In step S411, when the trapped-end intercom verifies that the wake-up signal sent by the search-and-rescue-end intercom 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 intercom is awakened by the wake-up signal). The remote wake-up mechanism is based on asynchronous paging. The search-and-rescue-end intercom 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 intercom can initiate a wake-up at any time without prior synchronization or time negotiation with the trapped-end intercom. This asynchronous paging mechanism simplifies the wake-up operation process and improves the flexibility and response speed of the intercom emergency rescue system.

[0076] To further improve the rescue success rate, the trapped-end intercom 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-end intercom will automatically wake up from the deep sleep state at the preset time interval, 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 the search-and-rescue personnel have not sent a remote wake-up signal, the trapped-end intercom can still continuously send distress signals to provide continuous rescue guarantee. To save power, the automatic wake-up function can be set to stop automatically when the battery power is lower than a certain threshold. Users can send commands through the search-and-rescue-end intercom in a non-emergency state to cancel or reconfigure the automatic wake-up function of the trapped-end intercom.

[0077] In step S412, after switching to the normal working mode, the trapped-end intercom activates the sound module and emits a sound signal. After switching to the normal working mode, the trapped-end intercom activates the sound module and controls the buzzer or speaker to emit a preset high-decibel sound signal for a period of time (for example, 30 seconds, 50 seconds, 1 minute, etc., which is not limited here).

[0078] In step S413, the trapped-end intercom performs automatic positioning in the normal working mode. 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-end intercom.

[0079] After being awakened, the trapped-end intercom can quickly and accurately obtain its own location information and send it to the search-and-rescue-end intercom. To achieve rapid positioning, the following methods can be adopted: 1) GNSS Quick Start: Select a GNSS receiver chip that supports quick start, optimize the start-up 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 valid position coordinates from start-up to the first time). For example, the Assisted Global Navigation Satellite System (A-GNSS) can be adopted to accelerate satellite ephemeris download and positioning calculation using network-assisted data.

[0080] 2) GNSS Hot Start and Warm Start: When not positioning for the first time, utilize the cached data and previous positioning information of the GNSS chip to achieve hot start and warm start, further shortening the positioning time.

[0081] 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, utilize the inertial navigation ability of the IMU for position estimation to improve the continuity and reliability of positioning.

[0082] 3) Ultra-Low Power Positioning Algorithm: Adopt an ultra-low power GNSS positioning algorithm to reduce power consumption during positioning and extend battery life. For example, an intermittent positioning mode can be adopted. In scenarios where continuous high-precision positioning is not required, reduce the positioning frequency to save electrical energy.

[0083] 4) High-Decibel Sound Prompt Design: Sound prompt is an important means to assist search and rescue personnel in quickly locating trapped persons. To ensure the effectiveness of the sound prompt, the sound module has the following characteristics: 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.

[0084] Optimized Sound Frequency and Mode: Select a sound frequency range sensitive to the human ear, such as the 1 kHz - 3 kHz 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 commands.

[0085] 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 battery usage time.

[0086] Step S414, after automatic positioning is completed, the processor packs the geographical location information and sends it to the search and rescue end walkie-talkie via the communication module in a wireless communication manner; 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; After the search and rescue end walkie-talkie receives the location information from the trapped person's walkie-talkie, the software application parses the location data, extracts information such as latitude and longitude coordinates, and marks the location 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.

[0087] 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; After the automatic positioning and sound prompt are completed, both the trapped person's walkie-talkie and the search and rescue end walkie-talkie 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 trapped person's walkie-talkie through the operation interface of the search and rescue end walkie-talkie. After receiving the voice call, the trapped person's walkie-talkie can directly play the voice sent by the search and rescue end walkie-talkie, enabling the trapped person to quickly confirm the rescue instruction signal and respond. For example, when the search and rescue personnel inform by voice "Your location has been located, please save your strength and wait for the demolition", the trapped person can immediately hear the clear voice instruction and cooperate. In addition, when the trapped person falls into a daze due to injury, fatigue or environmental hypoxia, the trapped end walkie-talkie can actively intervene to prevent the situation from deteriorating. 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 trapped end walkie-talkie will sense a decrease in the trapped person's limb activity or abnormal physiological indicators through built-in sensors (such as motion detection or heart rate monitoring, etc.), and automatically trigger the voice broadcast function, using short and repeated voice instructions ("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 trapped end walkie-talkie will switch to a high-frequency pulsed sound, similar to the short and sharp sound of a fire alarm. This sound design has strong penetration in a noisy environment and at the same time avoids panic caused by continuous noise. If the environment is extreme (such as heavy rain, mechanical roar, etc.), the trapped end walkie-talkie will link with an 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 wake-up effect through tactile stimulation. In a confined and narrow space (such as an earthquake sandwich), the sharp sound may be too harsh due to reverberation, and it can be adjusted to a gradually increasing tone, rising from a low hum, giving the trapped person time to adapt, and at the same time cooperating with the flashing red LED light to form a multi-sensory warning. After all alarms are triggered, the trapped end walkie-talkie can transmit the status and location of the trapped person back to the search and rescue end walkie-talkie in real time, ensuring that the search and rescue team synchronously initiates an emergency plan. For example, giving priority to dispatching the medical team or adjusting the search and rescue path. This process does not require manual operation and relies on the real-time judgment of the trapped end walkie-talkie on the environment and the status of the trapped person, which can not only avoid missing the golden rescue time but also reduce false touch interference.

[0088] 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; 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.

[0089] If 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 by voice commands (for example, "send alarm", "emergency help", etc.). After the emergency alarm is triggered, the intercom at the trapped person's end immediately sends a high-priority alarm signal. The alarm signal may include: Sound alarm, controls the sound module to emit a more urgent or sharper alarm sound that is different from the remote wake-up to indicate a higher level of urgency.

[0090] Light flash alarm controls the LED indicator to flash quickly, producing a visual warning effect.

[0091] The radio alarm signal, through the communication module, broadcasts a radio signal containing emergency alarm information on a specific frequency or channel. The radio alarm signal can be received and identified by nearby search and rescue end walkie-talkies or other devices with compatible receiving capabilities, thereby quickly transmitting the distress information.

[0092] Automatically enter high-power transmission mode. In order to increase the coverage of the alarm signal, when sending an emergency alarm, the intercom at the trapped person's end can automatically switch to high-power transmission mode to increase the transmission power of the radio signal.

[0093] Step S418, after receiving the voice call initiated by the trapped party's intercom, the search and rescue end intercom broadcasts the voice; Step S419, after the rescuer receives the voice of the trapped person through the rescue end intercom, the rescuer again initiates multiple voice calls to the trapped end intercom through the rescue end intercom; Step S420, after receiving multiple voice calls initiated by the search and rescue end intercom, the trapped end intercom broadcasts the voice; Step S421, after the trapped person receives multiple voice calls from the rescue personnel through the trapped-end intercom, the trapped person again initiates multiple voice calls to the rescue-end intercom through the trapped-end intercom; Step S422: After receiving multiple voice calls initiated by the trapped person's intercom, the search and rescue end intercom broadcasts the voice.

[0094] The following describes the intercom emergency rescue system based on ultra-low power consumption remote wake-up in the embodiment of the present invention from the perspective of hardware processing, see Figure 6 ,Figure 6 This is a schematic diagram of the physical device structure of an intercom emergency rescue system based on ultra-low power remote wake-up in an embodiment of the present application.

[0095] It should be noted that Figure 6 The structure of the intercom emergency rescue system based on ultra-low power remote wake-up shown is only an example, and should not bring any limitations to the functions and usage scope of the embodiments of the present invention.

[0096] As Figure 6 shown, the intercom 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.

[0097] 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.

[0098] In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a 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.

[0099] 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 can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.

[0100] 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.

[0101] 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.

[0102] As another aspect, the present invention also provides a computer-readable storage medium. This storage medium can be included in the ultra-low-power remote wake-up-based intercom emergency rescue system described in the above embodiments; or it can exist independently without being assembled into the ultra-low-power remote wake-up-based intercom emergency rescue system. 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 ultra-low-power remote wake-up-based intercom emergency rescue system, the ultra-low-power remote wake-up-based intercom emergency rescue system is enabled to implement the ultra-low-power remote wake-up-based intercom emergency rescue method provided in the above embodiments.

[0103] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit 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.

[0104] Those of ordinary skill in the art can understand all or part of the processes in the above embodiments of the method. This process can be completed by instructing relevant hardware by a computer program. 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 medium includes: ROM or random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

Claims

1. An intercom emergency rescue method based on ultra-low power consumption remote wake-up, characterized in that: include: Switching the normal working mode to the ultra-low power consumption mode according to the mode switching instruction generated by the target emergency event; When it is determined that the ultra-low power consumption mode has been switched to, the preset communication frequency band is monitored for signals according to a preset monitoring strategy to receive a 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, wherein the preset monitoring strategy is a preset alternating execution strategy of periodic sleep and timed monitoring; In the case where 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; When it is determined that the mode has been switched to the normal working mode, a target rescue operation is performed.

2. The method according to claim 1, characterized in that: The mode switching instruction generated according to the target emergency event triggers the switching of the normal working mode to the ultra-low power consumption mode, specifically including: Performing a first trigger detection on the trapped user input signal or the environmental sensor signal to obtain an event trigger detection result; In the case where it is determined according to the event trigger detection result that there is a target trigger signal, generating the mode switching instruction, wherein the trapped user input signal includes the target trigger signal; or, When an environmental vibration signal is determined according to the event trigger detection result, and the vibration intensity of the environmental vibration signal is greater than or equal to a preset vibration threshold, a first intensity detection is performed on the first signal intensity of the current communication frequency band, wherein the environmental sensing signal includes the environmental vibration signal; when it is detected that the first signal intensity is less than the preset intensity threshold, the mode switching instruction is generated; Determine a monitoring period according to the mode switching instruction and the preset monitoring strategy, wherein the monitoring period includes a sleep duration, a first monitoring duration, and a first monitoring frequency; Entering an ultra-low power sleep state according to the sleep duration, wherein the ultra-low power mode includes the ultra-low power sleep state.

3. The method according to claim 2, characterized in that When it is determined that the switch has been made to the ultra-low power consumption mode, the preset communication frequency band is monitored for signals according to a preset monitoring strategy to receive a wake-up signal broadcasted by the first search and rescue user through the first search and rescue end intercom on the preset communication frequency band, specifically including: When it is determined that the sleep time has ended, switching from the ultra-low power sleep state to the signal monitoring state, wherein the ultra-low power 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; In the case where it is determined according to the signal monitoring result that the wake-up signal broadcasted by the first search and rescue user through the first search and rescue end intercom on the preset communication frequency band is monitored, 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 has not been detected and the monitoring time has ended, re-entering the ultra-low power consumption sleep state according to the sleep time.

4. The method according to claim 2, characterized in that: When it is determined according to the signal monitoring result that the wake-up signal is not detected and the monitoring time has ended, re-entering the ultra-low power sleep state according to the sleep time specifically includes: Performing a second strength detection on the second signal strength of the preset communication frequency band within the sleep time to determine a 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 continues to exceed the preset vibration threshold, the first monitoring frequency is increased to the second monitoring frequency according to a first preset proportional coefficient and the first monitoring duration is shortened to the second monitoring duration according to the first preset proportional coefficient, wherein the absolute value of the signal strength gradient is a non-negative scalar value obtained by taking the modulus of the signal strength gradient value, the second monitoring frequency does not exceed the maximum allowed frequency, and the second monitoring duration is not less than the minimum guaranteed 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, the first monitoring frequency is reduced to a third monitoring frequency according to a second preset proportional coefficient and the first monitoring duration is extended to a third monitoring duration according to the second preset proportional coefficient, wherein 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 strength gradient is less than or equal to the preset gradient threshold, the first monitoring frequency and the first monitoring duration are maintained.

5. The method according to claim 2, characterized in that: In the case where it is determined that the wake-up signal is received from the preset communication frequency band, before performing security verification on the wake-up signal to switch the ultra-low power consumption mode to the normal working mode, the method further includes: In the ultra-low power sleep state, enter a high power transmission state according to a preset time interval, and emit 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; Using the target chip to capture a first satellite signal, and determining first geographic location information according to the first satellite signal, wherein the first geographic location information includes first latitude and longitude 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; A first voice call returned by a second search and rescue intercom is received on the preset communication frequency band, wherein the first voice call is triggered by a second search and rescue user based on the first radio alarm signal including the first geographic location information displayed on a first visual interface of the second search and rescue intercom.

6. The method according to claim 1, characterized in that The step of 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 specifically includes: Parsing the wake-up signal to determine a data frame structure of the wake-up signal, wherein the data frame structure includes a preamble, a wake-up ID field, a signal type field, and a check code field; Determine a third signal strength of the wake-up signal using the preamble code, and perform gain adjustment processing on the third signal strength; When it is determined that the gain adjustment process has been completed, performing carrier frequency synchronization processing on the wake-up signal using the preamble code; When it is determined that the carrier frequency synchronization process has been completed, extracting a target device identifier from the wake-up ID field, and matching the target device identifier with a own device identifier; In a case where it is determined that the target device identifier matches the own device identifier, using the check code field to perform a 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 according to the cyclic redundancy check result that the wake-up ID field and the signal type field are checked, parsing the signal type field to obtain a wake-up response parameter configuration; The ultra-low power consumption mode is switched to the normal working mode according to the wake-up response parameter configuration.

7. The method according to any one of claims 1 to 6, characterized in that: When it is determined that the switch has been made to the normal working mode, executing the target rescue operation specifically includes: Performing a second trigger detection on the trapped user input signal or the environmental sensor signal to obtain a rescue confirmation detection result; When it is determined according to the distress confirmation detection result that there is a target distress signal, entering a high-power transmission state; In the high-power transmission state, a second sound alarm signal and a second light flash alarm signal are emitted; Using the target chip to capture a second satellite signal, and determining second geographic location information according to the second satellite signal, wherein the second geographic location information includes second latitude and longitude 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 intercom 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 intercom, a second voice call returned by the first search and rescue intercom is received from the preset communication frequency band, wherein the second voice call is triggered by the first search and rescue user according to the second radio alarm signal including the second geographic location information displayed on the second visual interface of the first search and rescue intercom.

8. An intercom emergency rescue system based on ultra-low power consumption remote wake-up, characterized in that: The intercom emergency rescue based on ultra-low power consumption 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 intercom emergency rescue based on ultra-low power consumption remote wake-up to execute the method described in any one of claims 1-7.

9. A computer-readable storage medium comprising instructions, characterized in that: When the instruction is executed on the intercom emergency rescue based on ultra-low power consumption remote wake-up, the intercom emergency rescue based on ultra-low power consumption remote wake-up executes the method as described in any one of claims 1-7.

10. A computer program product, characterized in that When the computer program product runs on the intercom emergency rescue based on ultra-low power consumption remote wake-up, the intercom emergency rescue based on ultra-low power consumption remote wake-up executes the method as described in any one of claims 1-7.

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