A watch and a control method thereof

Abstract

The application discloses a watch and a control method thereof, comprising a watch body and a posture sensing module, a smoke detection module, a concentration quantification and grading module and an interaction module arranged on the watch body. The posture sensing module is used for identifying a wrist lifting action based on an inertial measurement unit and generating a sampling trigger signal when the watch approaches the face of a wearer. The smoke detection module collects smoke concentration data in the oral and nasal regions at a high sampling frequency under a trigger condition, thereby achieving the purposes of improving detection accuracy, reducing power consumption, prolonging the battery life and greatly increasing the wearing willingness of the wearer. The concentration quantification and grading module compares the real-time smoke concentration with multi-level concentration thresholds, quantifies and generates corresponding danger levels and concentration values. The interaction module drives the display screen, the vibration component and the buzzer to give a graded prompt according to the danger level, so that the wearer can intuitively judge the danger degree of the environment and take protective measures in time, and the reliability of the watch in environmental safety monitoring is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of smartwatch technology, and in particular to a watch and its control method. Background Technology

[0002] With the development of wearable devices and smart sensing technology, smartwatches have gradually evolved from traditional time display tools into comprehensive terminal devices integrating health monitoring, exercise management, and environmental sensing. Existing technologies typically integrate miniature smoke sensors into the watch itself, enabling real-time monitoring of smoke concentration in the surrounding environment during the wearer's daily life, work, or travel. This allows for preliminary warnings of dangerous situations such as fires and gas leaks, providing crucial protection for personal safety.

[0003] However, existing technologies still have several shortcomings in practical applications. First, most current smartwatches employ a continuous monitoring mode, causing the smoke sensor to operate at a constant power for extended periods. This results in high power consumption, impacting battery life and reducing the wearer's willingness to use the watch due to frequent charging. Second, the alarm mechanism of current smartwatches relies on a single concentration threshold. The watch triggers an alarm immediately when it detects excessive smoke concentration. However, in real-world scenarios, the smoke sensor is worn on the wrist, and there is a significant distance difference between its detection area and the user's breathing area (mouth and nose). This leads to a discrepancy between the smoke concentration detected on the wrist and the actual smoke concentration inhaled, making it difficult to accurately reflect the true amount of smoke inhaled and resulting in false alarms or missed alarms. Furthermore, current smartwatches only provide alarm signals, lacking quantitative expression and tiered display of smoke concentration. This makes it difficult for wearers to assess the level of danger in the current environment and make accurate decisions about whether evacuation is necessary. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. This application provides a watch and its control method, which can improve the accuracy of smoke exposure assessment, reduce average power consumption, extend battery life, and enable the wearer to intuitively judge the degree of environmental danger and take appropriate protective measures in a timely manner.

[0005] A watch according to a first aspect of this application includes a watch body and a multi-function module disposed on the watch body, the multi-function module including... The posture sensing module includes an inertial measurement unit, which is used to identify the wearer's wrist raising action and generate a sampling trigger signal when it is determined that the distance between the watch and the wearer's face is less than a preset proximity threshold. A smoke detection module, comprising a smoke sensor, wherein the smoke sensor is configured to collect smoke concentration data in the environment at a first sampling frequency when no sampling trigger signal is received, or to collect smoke concentration data in the environment at a second sampling frequency when the sampling trigger signal is received; wherein the first sampling frequency is less than the second sampling frequency. The concentration quantification and classification module includes a multi-level comparison unit, which is used to compare the received smoke concentration data with preset multi-level concentration thresholds and generate an environmental assessment result containing the current concentration value and its corresponding hazard level. The interaction module includes a display screen and a vibration component. The display screen is used to show visual cues of the current concentration value and the color corresponding to the environmental assessment result. The vibration component is used to output tactile feedback of the intensity corresponding to the environmental assessment result.

[0006] The watch according to the embodiments of this application has at least the following beneficial effects: The watch of this application includes a watch body and a multi-functional module disposed on the watch body. The multi-functional module includes a posture sensing module, a smoke detection module, a concentration quantification and classification module, and an interaction module. The posture sensing module includes an inertial measurement unit (IMU) that recognizes the wearer's wrist-raising movements. When the distance between the watch and the wearer's face is less than a preset proximity threshold, the posture sensing module generates a sampling trigger signal and outputs the sampling trigger signal to the smoke detection module. The smoke detection module includes a smoke sensor that collects smoke concentration data in the environment at a first sampling frequency when it does not receive the sampling trigger signal, or at a second sampling frequency when it receives the sampling trigger signal. The first sampling frequency is lower than the second sampling frequency, so that the watch of this application only initiates high-frequency smoke sampling when close to the wearer's mouth and nose area, making the detection location closer to the actual breathing area, thereby improving the accuracy of smoke exposure assessment. Simultaneously, continuous monitoring at a lower sampling frequency when not in close proximity significantly reduces the average power consumption of the smoke sensor, significantly extends the watch's battery life, greatly increases the wearer's willingness to wear the watch, and improves the accuracy of smoke exposure assessment.

[0007] The concentration quantification and grading module includes a multi-level comparison unit. This unit compares the smoke concentration data with preset multi-level concentration thresholds to generate an environmental assessment result that includes the current concentration value and the corresponding hazard level. The interaction module includes a display screen and a vibration component. The display screen shows the current concentration value and provides corresponding color visual cues based on the environmental assessment result. The vibration component provides tactile feedback of corresponding intensity based on the environmental assessment result. This watch, through its concentration quantification and grading module, outputs specific concentration values ​​and hazard levels, and provides synchronous feedback through the display screen and vibration component. This allows the wearer to intuitively assess the hazard level of their environment, facilitating timely protective measures and significantly improving the reliability of the watch in environmental safety monitoring.

[0008] According to some embodiments of this application, the attitude sensing module further includes a low-power continuous monitoring unit, which is configured to control the smoke sensor to reduce its operating current and control the inertial measurement unit to reduce its sampling frequency when no wrist-raising action is detected for a continuous preset time; and to restore the operating current of the smoke sensor and the sampling frequency of the inertial measurement unit when the wrist-raising action is detected again.

[0009] According to some embodiments of this application, the inertial measurement unit includes a three-axis accelerometer and a three-axis gyroscope; When the inertial measurement unit recognizes the wrist-raising action, it classifies the action based on the acceleration data sequence of the three-axis accelerometer, and after recognizing the start time of the wrist-raising, it calculates the spatial position of the watch relative to the wearer's face by combining the angular velocity data output by the three-axis gyroscope, so as to determine the real-time distance between the watch and the face.

[0010] According to some embodiments of this application, the preset multi-level concentration threshold includes a first concentration threshold and a second concentration threshold; wherein, the first concentration threshold is < the second concentration threshold; When the smoke concentration data is less than or equal to the first concentration threshold, the hazard level is determined to be the air cleanliness level; When the first concentration threshold < the smoke concentration data ≤ the second concentration threshold, the hazard level is determined to be a slight smoke level; When the second concentration threshold is less than the smoke concentration data, the danger level is determined to be severe smoke or a fire hazard level.

[0011] According to some embodiments of this application, when the hazard level is determined to be the air cleanliness level, the display screen shows a cleanliness mark and a green code, and the vibration component outputs tactile feedback at a first vibration intensity; When the hazard level is determined to be a light smoke level, the display screen shows a light smoke mark and a yellow code, and the vibration component outputs tactile feedback at a second vibration intensity; When the danger level is determined to be severe smoke or fire hazard level, the display screen shows a severe smoke mark and a red code, and the vibration component outputs tactile feedback at a third vibration intensity; The second vibration intensity is twice the first vibration intensity, and the third vibration intensity is twice the second vibration intensity.

[0012] According to some embodiments of this application, the interaction module further includes a buzzer component, which is used to output a preset buzzer audio at maximum volume when the danger level is determined to be severe smoke or a fire hazard level.

[0013] According to some embodiments of this application, the interaction module further includes a positioning unit and a wireless communication unit; The concentration quantification and multi-level comparison module also includes a fire confirmation and emergency linkage unit. The fire confirmation and emergency linkage unit is used to generate a fire confirmation signal when the level of severe smoke or fire hazard is continuously met and the duration exceeds the preset confirmation time. At the same time, it calls the positioning unit to obtain the current geographical coordinates, controls the wireless communication unit to send an alarm message containing the current geographical coordinates or fire information to the preset emergency contact, and automatically initiates a voice call.

[0014] According to some embodiments of this application, the concentration quantification and grading module further includes a dynamic threshold adjustment unit and a heart rate sensor. The heart rate sensor is used to collect the wearer's real-time heart rate value. When the real-time heart rate value is greater than a preset resting heart rate value, the dynamic threshold adjustment unit dynamically adjusts at least a first concentration threshold among the preset multi-level concentration thresholds based on the real-time heart rate value. The dynamic threshold adjustment unit satisfies the following:

[0015] in, The adjusted concentration threshold, The original concentration threshold; This is the real-time heart rate value; This is the preset resting heart rate value.

[0016] According to some embodiments of this application, the smoke detection module further includes an optical window cleaning and verification unit, and the smoke sensor includes a photoelectric receiver; the photoelectric receiver is used to collect ambient light intensity as a first light intensity value when the light source of the smoke sensor is off, and to collect ambient light intensity as a second light intensity value when the light source of the smoke sensor is on; the optical window cleaning and verification unit satisfies:

[0017] in, Reflectivity; This is the first light intensity value; This is the second light intensity value; The optical window cleaning verification unit is configured to calculate the reflectivity of the optical window before activating the smoke sensor, and generate a cleaning prompt message and suspend smoke concentration collection when the reflectivity is less than a preset cleaning threshold.

[0018] The watch control method according to the second aspect of this application, applied to the watch described in any of the above embodiments, includes the following steps: Acquire attitude data output by the inertial measurement unit; It can recognize wrist-raising movements and determine whether the distance between the watch and the wearer's face is less than a preset proximity threshold. When the judgment result is yes, the smoke sensor is controlled to collect smoke concentration data in the environment at the second sampling frequency; The smoke concentration data is compared with preset multi-level concentration thresholds to generate an environmental assessment result that includes the current concentration value and its corresponding hazard level. Based on the environmental assessment results, the control display screen shows the current concentration value and corresponding color visual cues, and the control vibration component outputs tactile feedback of corresponding intensity; If the environmental assessment results consistently meet the level of severe smoke or fire hazard and the duration exceeds the preset confirmation time, the system will automatically obtain the current geographical coordinates and send an alarm message to the preset emergency contact. Attached Figure Description

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a watch according to an embodiment of this application; Figure 2 This is a schematic diagram illustrating the operating principle of each functional module of a watch according to an embodiment of this application; Figure 3 This is a schematic diagram illustrating the operating principle of the attitude sensing module of a watch according to one embodiment of this application. Figure 4 This is a schematic diagram illustrating the operating principle of a watch's smoke detection module, concentration quantification and grading module, and interaction module according to an embodiment of this application.

[0020] Figure label: Watch body 100; 10-stripe watch; Smoke sensor 20; Display screen 30. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] The following reference Figures 1 to 4 This application describes the watch and its control method in the embodiments.

[0025] according to Figure 1 As shown, one embodiment of the watch in this application includes a watch body 100 and a multi-function module, with the multi-function module mounted on the watch body 100. The watch body 100 may include a watch case (not shown), a watch strap 10, a controller (not shown), a battery (not shown), etc., and the multi-function module includes a posture sensing module, a smoke detection module, a concentration quantification and grading module, and an interaction module.

[0026] See also Figure 2 The posture perception module includes an inertial measurement unit (IMU), which collects motion posture data of the wearer's wrist and then identifies wrist-raising movements. (See also...) Figure 3When a wrist-raising motion is detected, the distance between the watch and the wearer's face is determined. When the distance between the watch and the wearer's face is less than a preset proximity threshold (e.g., 8mm), the posture perception module generates a sampling trigger signal and outputs the sampling trigger signal to the smoke detection module.

[0027] The smoke detection module includes a smoke sensor 20, which is connected to an inertial measurement unit. The first sampling frequency is lower than the second sampling frequency. When the smoke sensor 20 does not receive the sampling trigger signal, it collects smoke concentration data in the environment at the first sampling frequency to achieve low-frequency monitoring, maintain basic environmental awareness, and reduce power consumption. Alternatively, when the sampling trigger signal is received, the smoke sensor 20 switches to the second sampling frequency to collect smoke concentration data in the environment, rapidly sampling the smoke concentration in the air near the wearer's mouth and nose, and outputting the smoke concentration data.

[0028] See also Figure 4 The concentration quantification and classification module includes a multi-level comparison unit, which is connected to the smoke sensor 20. The multi-level comparison unit can calculate the current concentration value and compare the smoke concentration value with preset multi-level concentration thresholds to generate an environmental assessment result that includes the current concentration value and the hazard level determined according to the concentration range.

[0029] The interaction module includes a display screen 30 and a vibration component, both of which are connected to a multi-level comparison unit. The display screen 30 can display the current concentration value in digital form and display corresponding color visual cues based on the environmental assessment results. The vibration component can output tactile feedback of corresponding intensity based on the environmental assessment results to remind the wearer of the current environmental status.

[0030] In practical use, when the watch is worn normally, the inertial measurement unit continuously monitors the wrist movement, and the smoke sensor 20 performs low-power monitoring at a first sampling frequency. When the user raises their wrist and brings it close to their face, the posture perception module recognizes the action and generates a sampling trigger signal when it determines that the distance between the watch and the face is less than a preset proximity threshold. Upon receiving the sampling trigger signal, the smoke detection module immediately (within 500ms) switches the sampling frequency to a second sampling frequency (e.g., 200Hz) to perform high-frequency continuous smoke concentration sampling of the air near the mouth and nose breathing area. Subsequently, the concentration quantification and grading module quantifies and grades the collected smoke concentration data, generates the current concentration value and environmental assessment results, and sends them to the interaction module. Based on the environmental assessment results, the interaction module displays the current concentration value and corresponding color visual cues on the display screen 30, and simultaneously outputs tactile feedback of corresponding intensity through the vibration component, enabling the wearer to promptly understand the current air quality status and the degree of danger.

[0031] The watch in this application only activates high-frequency smoke sampling when it is close to the wearer's mouth and nose area, making the detection location closer to the actual breathing area and thus improving the accuracy of smoke exposure assessment. Simultaneously, it uses a lower frequency sampling frequency for continuous monitoring when not in close proximity, significantly reducing the average power consumption of the smoke sensor 20 and significantly extending the watch's battery life, greatly increasing the wearer's willingness to wear it. Secondly, the watch in this application quantifies and outputs specific concentration values ​​and hazard levels through a concentration quantification and grading module, and provides synchronous feedback through the display screen 30 and vibration components, enabling the wearer to intuitively judge the degree of environmental hazard and take appropriate protective measures in a timely manner, thereby improving the practicality and reliability of the smartwatch in environmental safety monitoring.

[0032] In some embodiments, the smoke sensor 20 is a miniature optical smoke sensor 20, which includes a light source generator.

[0033] In some embodiments, after receiving the sampling trigger signal, the smoke detection module switches the sampling frequency to the second sampling frequency within 500ms, continuously acquires the voltage signal output by the photoelectric receiver at a sampling frequency of 200Hz, performs moving average filtering on the voltage signal, substitutes it into the pre-calibrated concentration-voltage fitting curve, and outputs the current concentration value in micrograms per cubic meter.

[0034] according to Figure 2 As shown, in one embodiment of this application, the attitude sensing module further includes a low-power continuous monitoring unit, which is connected to the inertial measurement unit. The low-power continuous monitoring unit can control the smoke sensor 20 to reduce its operating current (e.g., from the normal operating current of 100mA to 30mA) when no wrist-raising motion is detected for a continuous preset time period (e.g., 30 minutes), thereby reducing the power consumption of the smoke sensor 20. Simultaneously, it controls the inertial measurement unit to reduce its sampling frequency, thereby reducing the power consumption of the inertial measurement unit. Specifically, it enables the three-axis accelerometer and three-axis gyroscope to operate at a lower sampling frequency, such as reducing both from the normal sampling frequency of 50Hz to 5Hz, reducing unnecessary high-frequency sampling and further reducing the watch's power consumption.

[0035] When the wearer moves their wrist again and raises their wrist, the inertial measurement unit (IMU) detects the wrist movement and sends a wrist movement recognition signal to the low-power continuous monitoring unit (LPMU). Upon receiving this recognition signal, the LMU restores the smoke sensor 20 to its normal operating current and the IMU to its normal sampling frequency to ensure the response speed and detection accuracy of subsequent attitude recognition and smoke detection.

[0036] The watch of this application can automatically switch the smoke sensor 20 and the inertial measurement unit to a low-power working state based on whether the wearer has not raised their wrist for a long time, and quickly resume normal working state when a new wrist raising action is detected. This achieves timely response capability to changes in user actions while significantly reducing the average power consumption of the watch during the standby phase, reducing battery energy consumption, and extending the watch's battery life.

[0037] In some embodiments, the low-power continuous monitoring unit includes a timer.

[0038] according to Figure 3 As shown, in one embodiment of this application, the inertial measurement unit includes a three-axis accelerometer and a three-axis gyroscope. The three-axis accelerometer can collect acceleration data of the wearer's wrist on the X, Y, and Z axes at a preset frequency (e.g., 50Hz), and the three-axis gyroscope can collect angular velocity data of the wearer's wrist around each coordinate axis at a preset frequency (e.g., 50Hz). When the inertial measurement unit recognizes a wrist-raising action, it classifies the action based on the acceleration data sequence of the three-axis accelerometer to identify whether the wearer has performed a wrist-raising action; and after recognizing the start time of the wrist-raising action, it calculates the spatial position of the watch relative to the wearer's face by combining the angular velocity data output by the three-axis gyroscope to determine the real-time distance between the watch and the face.

[0039] Specifically, the triaxial accelerometer continuously outputs acceleration data sequences to a pre-trained support vector machine (SVM) classifier, which is trained on 2000 sets of acceleration samples labeled with wrist-raising start and end frames. Upon receiving the wrist-raising start signal, continuous angular velocity data and connected acceleration data from the wrist-raising start moment to the current moment are acquired. The continuous angular velocity data is integrated to obtain a wrist rotation angle sequence, and the continuous acceleration data is subjected to gravity component elimination and double integration to obtain a wrist displacement vector sequence. The wrist rotation angle sequence and wrist displacement vector sequence are input into the human upper limb kinematic model, and the spatial position of the wrist relative to the face is calculated through geometric relationships to determine the real-time distance between the watch and the face.

[0040] according to Figure 4 As shown, in one embodiment of this application, in the concentration quantification and grading module, preset multi-level concentration thresholds include a first concentration threshold (e.g., 10 μg / m³) and a second concentration threshold (e.g., 100 μg / m³); wherein, the first concentration threshold < the second concentration threshold.

[0041] When the smoke concentration data is less than or equal to the first concentration threshold, the danger level is determined by the first comparison result: air cleanliness level. The display screen 30 shows a cleanliness mark and a green code, and the vibration component outputs tactile feedback at the first vibration intensity.

[0042] When the first concentration threshold < smoke concentration data ≤ second concentration threshold, the danger level is determined as the second comparison result: slight smoke level. The display screen 30 displays a slight smoke mark and a yellow code, and the vibration component outputs tactile feedback at a second vibration intensity.

[0043] When the second concentration threshold is less than the smoke concentration data, the hazard level is determined by the third comparison result: severe smoke or fire hazard level. The display screen 30 shows a severe smoke mark and a red code, and the vibration component outputs tactile feedback at the third vibration intensity. Furthermore, The second vibration intensity is twice that of the first vibration intensity, and the third vibration intensity is twice that of the second vibration intensity. This progressively increasing vibration feedback ensures that the wearer can quickly detect danger in an emergency.

[0044] The watch in this application firstly divides continuously changing smoke concentration data into multiple hazard levels through a multi-level comparison unit. This allows the watch to perform standardized assessments of the environmental state based on different concentration ranges. It not only transforms complex detection results into easily understandable hazard level information but also provides a unified basis for subsequent display, vibration, and alarm functions. This enables the wearer to quickly determine the current air quality and hazard level and take appropriate measures in a timely manner, thereby improving the readability, efficiency, and reliability of environmental monitoring results. Secondly, compared to displaying the current concentration value, generating corresponding color codes and vibration intensity feedback provides a more intuitive presentation of the current environmental state, allowing for rapid assessment of environmental risk levels without the need to read complex data. Especially in situations with low light, limited visibility, or difficulty viewing the screen, it effectively conveys hazard information, significantly improving the perceptibility and reliability of environmental monitoring results.

[0045] In some embodiments, the corresponding display color parameters are retrieved according to the determined visual code, and the AMOLED display 30 of the watch is controlled to display the current concentration value in 72-point font in the central area of ​​the screen, while the screen background color is set to the color corresponding to the visual code.

[0046] In some embodiments, the first vibration intensity vibration feedback is a square wave waveform with a frequency of 80Hz and a duty cycle of 30%; the second vibration intensity vibration feedback is a square wave waveform with a frequency of 120Hz and a duty cycle of 50%; and the third vibration intensity vibration feedback is a square wave waveform with a frequency of 180Hz and a duty cycle of 80%.

[0047] In some embodiments, the vibration component is a linear motor connected to a concentration quantification and grading module. The linear motor is used to receive the vibration intensity code in the environmental assessment results, retrieve the corresponding vibration waveform parameters from a preset vibration waveform library according to the vibration intensity code, and control the watch's linear motor to output tactile feedback with the vibration waveform parameters.

[0048] Furthermore, in emergency scenarios such as fires or high-concentration smoke, existing smartwatches have relatively simple emergency mechanisms, only capable of issuing local alarm signals. When the wearer is unconscious, panicked, or unable to actively operate the device, the watch struggles to reliably and promptly transmit emergency information and location data to emergency contacts or rescue organizations. Therefore, according to Figure 4 As shown in one embodiment of this application, the interaction module further includes a buzzer component, a positioning unit, and a wireless communication unit. The buzzer component is used to output a preset buzzer audio at maximum volume when the danger level is determined to be severe smoke or a fire hazard level, thereby forming a multi-channel joint reminder of visual, tactile, and auditory senses. Because sound prompts have the characteristics of wide propagation range and fast recognition speed, even if the wearer does not check the display screen 30 in time or does not clearly feel the vibration, they can quickly detect the danger through the buzzer sound. At the same time, surrounding personnel can also provide timely assistance based on the alarm sound, thereby improving the warning effect and safety assurance capability in emergency situations. The positioning unit is used to obtain the current geographical coordinates of the watch; the wireless communication unit is used to send alarm information to the outside and initiate a voice call.

[0049] The concentration quantification and multi-level comparison module also includes a fire confirmation and emergency linkage unit. This unit generates a fire confirmation signal when severe smoke or a fire hazard level is continuously present for more than a preset confirmation duration (e.g., 30 seconds). Simultaneously, it calls the positioning unit to obtain the current geographical coordinates and controls the wireless communication unit to send an alarm message containing the current geographical coordinates or fire information to a preset emergency contact. It also automatically initiates a voice call, allowing the wearer to receive external assistance through an automatically established communication connection even when unable to actively operate the watch.

[0050] Specifically, the fire confirmation and emergency linkage unit has a built-in timer and counter. When the concentration quantification and classification module continuously meets the level of severe smoke or fire hazard for more than 30 seconds, the timer starts the first timing window. Within this first timing window, the counter records the total number of times the concentration quantification and classification module outputs the third comparison result. When the ratio of this total number to the theoretical maximum number of samplings within the first timing window is greater than 0.8, the fire confirmation and emergency linkage unit generates a fire confirmation signal. In response to this fire confirmation signal, the fire confirmation and emergency linkage unit calls the watch's positioning unit to obtain the current geographical coordinates, sends a first short message containing the geographical coordinates and fire information to a preset first emergency contact number via the wireless communication unit, and simultaneously initiates a voice call to a preset second emergency contact number via the wireless communication module. After the voice call is connected, a two-way voice channel is established through the watch's speaker and microphone.

[0051] In some embodiments, the positioning unit is GPS satellite positioning, BeiDou satellite positioning, etc. The wireless communication unit is WIFI, Bluetooth, etc.

[0052] Furthermore, existing smartwatches rely on fixed concentration thresholds for simple judgments, lacking consideration of the wearer's actual behavioral state. When a user is active, their heart rate and respiratory rate change, but traditional solutions still use fixed thresholds, making it difficult to balance alarm sensitivity and false alarm rate. Therefore, according to Figure 2 As shown, in one embodiment of this application, the concentration quantification and grading module further includes a dynamic threshold adjustment unit and a heart rate sensor. The heart rate sensor is used to collect the wearer's real-time heart rate value. When the real-time heart rate value is greater than the preset resting heart rate value, the dynamic threshold adjustment unit dynamically adjusts at least the first concentration threshold among the preset multi-level concentration thresholds according to the real-time heart rate value. The dynamic threshold adjustment unit satisfies the following:

[0053] in, The adjusted concentration threshold, The original concentration threshold (e.g., the preset first concentration threshold: 10 μg / m³). This is the real-time heart rate value; The preset resting heart rate value (e.g., the preset resting heart rate value is 70 beats / minute).

[0054] The watch described in this application can adjust the smoke concentration threshold in real time based on the wearer's current heart rate through the aforementioned dynamic threshold adjustment. When the user is running, climbing stairs, or engaging in other physical activities, an increase in heart rate will automatically trigger an increase in the threshold, thereby reducing unnecessary alarms caused by frequent watch checks due to exercise or short-term environmental fluctuations. When the user returns to a resting state, the threshold automatically returns to the basic setting value, ensuring monitoring sensitivity. This achieves adaptive matching between the smoke alarm threshold and the human physiological state, improving the rationality, stability, and user experience of alarm judgment.

[0055] according to Figure 1 As shown, in one embodiment of this application, the smoke detection module further includes an optical window cleaning and calibration unit, and the smoke sensor 20 includes a photodetector. It is understood that the photodetector is capable of receiving ambient light and light signals formed by scattering or reflection from particles within the detection cavity.

[0056] In actual operation, the photoelectric receiver can collect ambient light intensity as a first light intensity value when the light source of the smoke sensor 20 is off, and collect ambient light intensity as a second light intensity value when the light source of the smoke sensor 20 is on. The optical window cleaning verification unit satisfies:

[0057] in, Reflectivity; This is the first light intensity value; This is the second light intensity value; This allows the optical window cleaning verification unit to calculate the reflectivity of the optical window before activating the smoke sensor 20. If the reflectivity R < a preset cleaning threshold (indicating abnormalities such as stains, moisture, or dust obstruction on the optical window surface), a cleaning prompt is generated, and smoke concentration acquisition is temporarily suspended. If the reflectivity R ≥ the preset cleaning threshold, the optical window is in a normally detectable state, and the smoke detection module continues with the subsequent smoke concentration acquisition process.

[0058] This application, through the setting of an optical window cleaning and verification unit, automatically judges the cleanliness of the window and performs in-situ cleaning before each sampling, ensuring that the miniature optical smoke sensor maintains detection stability and data reliability during long-term wear, and avoiding calculation errors caused by sweat, dust or water vapor adhering to the optical window.

[0059] according to Figures 1 to 4 As shown, a watch control method according to an embodiment of this application is applied to the watch in any of the above embodiments. The control method includes the following steps.

[0060] Acquire attitude data output by the inertial measurement unit; It can recognize wrist-raising movements and determine whether the distance between the watch and the wearer's face is less than a preset proximity threshold. When the judgment result is yes, the smoke sensor 20 is controlled to collect smoke concentration data in the environment at the second sampling frequency; The smoke concentration data is compared with preset multi-level concentration thresholds to generate an environmental assessment result that includes the current concentration value and its corresponding hazard level. Based on the environmental assessment results, the control display screen 30 displays the current concentration value and corresponding color visual cues, and controls the vibration component to output tactile feedback of corresponding intensity; If the environmental assessment results consistently meet the level of severe smoke or fire hazard and the duration exceeds the preset confirmation time, the system will automatically obtain the current geographical coordinates and send an alarm message to the preset emergency contact.

[0061] Specifically, the control method includes the following steps.

[0062] S100. When the watch is in normal wearing condition, the inertial measurement unit continuously collects the movement state of the wearer's wrist and outputs the attitude data to the controller in real time. At the same time, if no wrist raising action is detected within 30 minutes, the smoke sensor 20 operates at a current of 30mA, and the three-axis accelerometer and three-axis gyroscope operate at a frequency of 5Hz to monitor the environment.

[0063] S200: The controller analyzes the attitude data output by the inertial measurement unit to identify whether the wearer has performed a wrist-raising motion. After detecting the wrist-raising motion, it further calculates the spatial position of the watch relative to the wearer's face and calculates the real-time distance. When the real-time distance is <8mm, it determines that the watch has approached the wearer's mouth and nose area and generates a sampling trigger signal to proceed to the next step; when the real-time distance is ≥8mm, it maintains the normal monitoring state.

[0064] S300. When the sampling trigger signal is generated in step S200, the processor sends a sampling control command to the smoke sensor 20, causing the smoke sensor 20 to switch from low-frequency monitoring mode to a second sampling frequency of 200Hz, performing high-frequency continuous sampling of the smoke particle concentration in the current environment, and outputting smoke concentration data. Simultaneously, optical window verification is performed during smoke collection, calculating the normalized reflectance by turning the light source on and off. If the reflectance is less than a preset cleaning threshold, a cleaning prompt is displayed; otherwise, concentration collection continues.

[0065] S400. The heart rate sensor continuously collects HR. If HR ≤ 70 bpm, the preset threshold is maintained; otherwise, the preset threshold is dynamically adjusted.

[0066] S500. Call the concentration quantification and classification module to compare the smoke concentration data with multi-level concentration thresholds, calculate the current concentration value, and determine the corresponding hazard level based on the concentration range to form an environmental assessment result.

[0067] The S500 interactive module receives the environmental assessment results, and the display screen 30 displays the current smoke concentration value, the corresponding mark and color code for the hazard level; at the same time, the vibration component outputs tactile feedback corresponding to the hazard level to remind the wearer of the current air quality status and hazard level.

[0068] The S600 controller continuously monitors the hazard level. When it continuously determines that there is severe smoke or a fire hazard and the preset confirmation conditions are met, it automatically calls the positioning unit to obtain the current geographical coordinates and sends an alarm message containing location information and fire information to the preset emergency contact via the wireless communication unit.

[0069] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A watch, characterized in that: It includes a watch body and a multi-function module disposed on the watch body, the multi-function module including... The posture sensing module includes an inertial measurement unit, which is used to identify the wearer's wrist raising action and generate a sampling trigger signal when it is determined that the distance between the watch and the wearer's face is less than a preset proximity threshold. A smoke detection module, comprising a smoke sensor, wherein the smoke sensor is configured to collect smoke concentration data in the environment at a first sampling frequency when no sampling trigger signal is received, or to collect smoke concentration data in the environment at a second sampling frequency when the sampling trigger signal is received; wherein the first sampling frequency is less than the second sampling frequency. The concentration quantification and classification module includes a multi-level comparison unit, which is used to compare the received smoke concentration data with preset multi-level concentration thresholds and generate an environmental assessment result containing the current concentration value and its corresponding hazard level. The interaction module includes a display screen and a vibration component. The display screen is used to show visual cues of the current concentration value and the color corresponding to the environmental assessment result. The vibration component is used to output tactile feedback of the intensity corresponding to the environmental assessment result.

2. The watch according to claim 1, characterized in that: The attitude sensing module also includes a low-power continuous monitoring unit, which is configured to control the smoke sensor to reduce its operating current and control the inertial measurement unit to reduce its sampling frequency when no wrist-raising action is detected for a continuous preset time; and to restore the operating current of the smoke sensor and the sampling frequency of the inertial measurement unit when the wrist-raising action is detected again.

3. The watch according to claim 1 or 2, characterized in that: The inertial measurement unit includes a three-axis accelerometer and a three-axis gyroscope; When the inertial measurement unit recognizes the wrist-raising action, it classifies the action based on the acceleration data sequence of the three-axis accelerometer, and after recognizing the start time of the wrist-raising, it calculates the spatial position of the watch relative to the wearer's face by combining the angular velocity data output by the three-axis gyroscope, so as to determine the real-time distance between the watch and the face.

4. The watch according to claim 1, characterized in that: The preset multi-level concentration thresholds include a first concentration threshold and a second concentration threshold; wherein, the first concentration threshold is less than the second concentration threshold; When the smoke concentration data is less than or equal to the first concentration threshold, the hazard level is determined to be the air cleanliness level; When the first concentration threshold < the smoke concentration data ≤ the second concentration threshold, the hazard level is determined to be a slight smoke level; When the second concentration threshold is less than the smoke concentration data, the danger level is determined to be severe smoke or a fire hazard level.

5. The watch according to claim 4, characterized in that: When the hazard level is determined to be the air cleanliness level, the display screen shows a cleanliness mark and a green code, and the vibration component outputs tactile feedback at a first vibration intensity; When the hazard level is determined to be a light smoke level, the display screen shows a light smoke mark and a yellow code, and the vibration component outputs tactile feedback at a second vibration intensity; When the danger level is determined to be severe smoke or fire hazard level, the display screen shows a severe smoke mark and a red code, and the vibration component outputs tactile feedback at a third vibration intensity; The second vibration intensity is twice the first vibration intensity, and the third vibration intensity is twice the second vibration intensity.

6. The watch according to claim 5, characterized in that: The interaction module also includes a buzzer component, which is used to output a preset buzzer audio at maximum volume when the danger level is determined to be severe smoke or a fire hazard level.

7. The watch according to any one of claims 4 to 6, characterized in that: The interaction module also includes a positioning unit and a wireless communication unit; The concentration quantification and multi-level comparison module also includes a fire confirmation and emergency linkage unit. The fire confirmation and emergency linkage unit is used to generate a fire confirmation signal when the level of severe smoke or fire hazard is continuously met and the duration exceeds the preset confirmation time. At the same time, it calls the positioning unit to obtain the current geographical coordinates, controls the wireless communication unit to send an alarm message containing the current geographical coordinates or fire information to the preset emergency contact, and automatically initiates a voice call.

8. The watch according to claim 4 or 5, characterized in that: The concentration quantification and grading module further includes a dynamic threshold adjustment unit and a heart rate sensor. The heart rate sensor is used to collect the wearer's real-time heart rate value. When the real-time heart rate value is greater than a preset resting heart rate value, the dynamic threshold adjustment unit dynamically adjusts at least a first concentration threshold among the preset multi-level concentration thresholds based on the real-time heart rate value. The dynamic threshold adjustment unit satisfies the following: in, The adjusted concentration threshold, The original concentration threshold; This is the real-time heart rate value; This is the preset resting heart rate value.

9. The watch according to claim 1, characterized in that: The smoke detection module further includes an optical window cleaning and verification unit, and the smoke sensor includes a photoelectric receiver; the photoelectric receiver is used to collect ambient light intensity as a first light intensity value when the light source of the smoke sensor is off, and to collect ambient light intensity as a second light intensity value when the light source of the smoke sensor is on; the optical window cleaning and verification unit satisfies: in, Reflectivity; This is the first light intensity value; This is the second light intensity value; The optical window cleaning verification unit is configured to calculate the reflectivity of the optical window before activating the smoke sensor, and generate a cleaning prompt message and suspend smoke concentration collection when the reflectivity is less than a preset cleaning threshold.

10. A method for controlling a watch, characterized in that: Applied to the watch according to any one of claims 1 to 9, the control method includes the following steps: Acquire attitude data output by the inertial measurement unit; It can recognize wrist-raising movements and determine whether the distance between the watch and the wearer's face is less than a preset proximity threshold. When the judgment result is yes, the smoke sensor is controlled to collect smoke concentration data in the environment at the second sampling frequency; The smoke concentration data is compared with preset multi-level concentration thresholds to generate an environmental assessment result that includes the current concentration value and its corresponding hazard level. Based on the environmental assessment results, the control display screen shows the current concentration value and corresponding color visual cues, and the control vibration component outputs tactile feedback of corresponding intensity; If the environmental assessment results consistently meet the level of severe smoke or fire hazard and the duration exceeds the preset confirmation time, the system will automatically obtain the current geographical coordinates and send an alarm message to the preset emergency contact.

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