A method for controlling power consumption of an electronic terminal based on light radiation exposure events

Abstract

The present application relates to a kind of electronic terminal power consumption control method based on light radiation exposure event, belong to electronic terminal power consumption control technical field, the method includes: at least one target waveband light radiation data of light radiation intensity of light radiation sensor component output is collected;Determine light radiation exposure event level;When the light radiation exposure event level is at hibernation level, control the electronic terminal enters low power consumption state;When the light radiation exposure event level is at the first level, control the electronic terminal enters local display state, output light radiation state indication;When the light radiation exposure event level is at second level, control the electronic terminal enters communication reminder state, start the wireless communication module and send light radiation reminder signal, and set hysteresis control.

Description

Technical Field

[0001] This invention belongs to the field of electronic terminal power consumption control technology, specifically relating to an electronic terminal power consumption control method based on optical radiation exposure events. Background Technology

[0002] With the rapid development of portable electronic terminals, wearable devices, and environmental monitoring equipment, more and more electronic terminals are integrating environmental sensing functions to achieve real-time detection and intelligent response to environmental parameters around users. Among them, the function of light radiation monitoring has been gradually applied to light radiation monitoring components, smartwatches, smart bracelets, smart glasses, smart clothing, smart umbrellas, and other electronic terminals with environmental sensing capabilities because it can help users understand the risks of light radiation exposure, assist in sun protection management, and reduce the health risks caused by long-term light radiation exposure.

[0003] For electronic terminals with optical radiation monitoring capabilities, the devices typically need to continuously acquire ambient optical radiation information through optical radiation sensing components and provide display, prompts, or warnings to users based on the detection results. However, most of these devices are battery-powered, especially wearable devices and small sensing devices, whose internal space is limited and battery capacity is constrained by size and weight. Therefore, power management capabilities directly affect the device's battery life and user experience. How to reduce system power consumption while ensuring the timeliness and accuracy of optical radiation monitoring has become an urgent problem to be solved in related technical fields.

[0004] In existing technologies, power consumption management for electronic terminals typically employs a timed wake-up mechanism. Specifically, the terminal periodically wakes up its sensing components, processor, and communication modules at preset time intervals to collect and process data, then re-enters sleep mode after completing the task. For example, the device may sample light radiation every 30 seconds, 60 seconds, or longer. This approach can reduce average power consumption to some extent, but its energy-saving effect is closely related to the wake-up cycle. When the wake-up cycle is short, the device needs to frequently start related hardware modules, resulting in still high overall power consumption; while when the wake-up cycle is long, it may fail to capture rapid changes in ambient light radiation in a timely manner. For example, when a user quickly moves from an indoor environment to a strong outdoor sunlight environment, the light radiation index may rise rapidly within seconds. A fixed-cycle sampling mechanism may easily miss the rapid increase in light radiation intensity, leading to delayed alerts and affecting monitoring effectiveness.

[0005] Another existing approach uses external events to trigger device wake-up. For example, it detects human motion using an accelerometer, triggering sampling based on position changes, or activates relevant functional modules through user interactions such as button presses or touch operations. This approach reduces invalid sampling, but its triggering conditions primarily depend on user behavior or device motion, while the risk of light radiation exposure is not necessarily related to these conditions. For instance, when a user is stationary outdoors, such as reading, resting, fishing, sightseeing, or sunbathing, although the device's motion changes little, the level of light radiation exposure may remain high. In this case, solutions relying solely on motion detection or manual triggering struggle to promptly identify the actual risk of light radiation exposure.

[0006] Furthermore, some existing devices employ a continuous monitoring mode, where the optical radiation sensor remains operational for extended periods, displaying or triggering alarms based on real-time detection results. While this approach meets the real-time monitoring requirements, it consumes significant power. In low-light-radiation environments such as indoors, at night, or during rainy weather, the sensor, display module, and wireless communication module may continue operating, resulting in substantial unnecessary energy consumption and shortening the device's battery life.

[0007] Furthermore, most existing optical radiation monitoring solutions rely on a single optical radiation intensity threshold for alert control; that is, an alert is triggered when the detected value exceeds the preset threshold, and canceled when the detected value falls below the threshold. However, the optical radiation intensity in real-world environments often fluctuates due to factors such as cloud cover, tree shade, building reflection, and changes in user activity paths. When the optical radiation intensity approaches the threshold, the device may frequently enter and exit the alert state, causing the display module, indicator device, or wireless communication module to switch repeatedly, increasing power consumption and potentially degrading the user experience.

[0008] Meanwhile, the risk of light radiation exposure is not only related to the current intensity of light radiation, but also closely related to the rate of change of light radiation intensity and the duration of exposure. For example, when a user quickly enters a high-light-radiation environment from indoors, a rapid alert needs to be triggered; similarly, a high risk of exposure may exist when light radiation increases slowly but the duration of exposure is relatively long. However, most existing technologies rely solely on instantaneous detection values ​​for judgment, lacking a comprehensive consideration of factors such as the rate of change of light radiation intensity and the duration of exposure, making it difficult to accurately reflect the true level of light radiation exposure events.

[0009] Therefore, existing technologies still lack a technical solution that can combine factors such as light radiation intensity, light radiation intensity change rate, and continuous exposure time to classify light radiation exposure events and implement multi-level power consumption state switching with hysteresis characteristics based on event level, so as to take into account the requirements of timely monitoring, accurate reminders, and low power consumption operation. Summary of the Invention

[0010] To address the problems in existing power management schemes for optical radiation exposure events that fail to adequately consider factors such as the rate of change of optical radiation intensity and duration of continuous exposure, lack hysteresis characteristics during multi-level power state switching, and result in delayed response or frequent switching, this invention provides a power consumption control method and device for electronic terminals based on optical radiation exposure events.

[0011] The present invention adopts the following technical solution: The light radiation intensity of at least one target band light radiation data output by the light radiation sensing component built into or connected to the electronic terminal. The level of a light radiation exposure event is determined based on the light radiation intensity, and at least one of the light radiation intensity change rate and duration. Based on the level of the light radiation exposure event, the display or indicator device and wireless communication module of the electronic terminal are controlled to switch between low power consumption state, local display state and communication reminder state. Specifically, when the light radiation exposure event level is at the sleep level, the display or indicator device of the electronic terminal and the wireless communication module are controlled to enter a low-power state; when the light radiation exposure event level is at the first level, the electronic terminal is controlled to enter a local display state, waking up the display or indicator device to output a light radiation status indication; when the light radiation exposure event level is at the second level, the electronic terminal is controlled to enter a communication reminder state, activating the wireless communication module to send a light radiation reminder signal; and the light radiation fall-off condition for entering the low-power state is lower than the light radiation reaching condition for waking up the display or indicator device from the low-power state, thus forming hysteresis control.

[0012] Device scheme: An electronic terminal includes: a light radiation sensor, a display or indicator device, a wireless communication module, a processor, and a power module; wherein the processor is configured to perform the above-described method.

[0013] The beneficial effects of this invention are as follows: It binds power consumption state switching to the level of light radiation exposure events, rather than relying on fixed time intervals. In low-light radiation environments, the terminal automatically enters an extremely low-power state. Once the ambient light radiation reaches a level that may affect the user, the terminal automatically wakes up to display or communicate. This "on-demand wake-up" mode consumes less power most of the time compared to timed wake-up schemes. A hysteresis interval is set between the wake-up threshold and the sleep / fallback condition, effectively preventing the terminal from frequently switching states at threshold boundaries. For example, when UVI fluctuates near the threshold (such as alternating between cloud cover and clear skies), the terminal will not repeatedly wake up-sleep-wake up, improving system stability and user experience. It does not require the terminal to have a specific carrier structure, specific appearance, or specific usage scenario; any electronic terminal with a light radiation sensor and display / communication capabilities can be used, covering a wide range of electronic terminal categories such as mobile phones, watches, bracelets, pendants, umbrellas, and in-vehicle devices. It features multi-level response: Level 1 exposure → only local display reminder (high-power communication module not activated); Level 2 exposure → activate wireless communication to send remote reminder. This tiered response strategy improves users' ability to receive timely alerts for high-intensity exposure while avoiding unnecessary power consumption caused by activating wireless communication when exposed to low-intensity light radiation. Attached Figure Description

[0014] Figure 1 This is a flowchart illustrating the overall process of an electronic terminal power consumption control method based on optical radiation exposure events according to the present invention.

[0015] Figure 2 This is a flowchart illustrating the logic for determining the level of an optical radiation exposure event in an electronic terminal power consumption control method based on optical radiation exposure events, as described in this invention.

[0016] Figure 3 This is a state switching diagram of a multi-level power consumption state machine in an electronic terminal power consumption control method based on optical radiation exposure events according to the present invention.

[0017] Figure 4 This is a diagram showing the relationship between light radiation intensity and state in the hysteresis control of an electronic terminal power consumption control method based on light radiation exposure events, as described in this invention.

[0018] Figure 5 This is an example timing diagram illustrating the change of optical radiation exposure events over time in an electronic terminal power consumption control method based on optical radiation exposure events according to the present invention.

[0019] Figure 6 This is a hardware module block diagram of the electronic terminal of the present invention. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the scope of protection of the present invention is not limited to the following embodiments. Those skilled in the art can make equivalent changes to the specific implementation structure and connection methods without departing from the concept of the present invention.

[0022] like Figures 1-6 As shown, this embodiment presents a method for controlling the power consumption of electronic terminals based on optical radiation exposure events. The light radiation intensity of at least one target band light radiation data output by the light radiation sensing component; The level of a light radiation exposure event is determined based on the light radiation intensity, and at least one of the light radiation intensity change rate and duration. When the light radiation exposure event level is at the sleep level, control the electronic terminal to enter a low power consumption state; When the light radiation exposure event level is at the first level, the electronic terminal is controlled to enter the local display state and output a light radiation status indication. When the light radiation exposure event level is at level two, the electronic terminal is controlled to enter the communication reminder state, and the wireless communication module is activated to send a light radiation reminder signal; wherein, the light radiation fall-off condition for entering the low power state is lower than the light radiation reaching condition for waking up the display or indicator device from the low power state, so as to form hysteresis control.

[0023] Furthermore, this embodiment also includes an electronic terminal power consumption control system based on optical radiation exposure events, characterized in that it includes: Optical radiation sensor, used to collect optical radiation intensity; Display or indicator device for outputting light radiation status indication and / or light radiation reminder information; The wireless communication module is used to send light radiation warning signals; An ambient light sensor is used to collect ambient light intensity. The processor is electrically connected to the light radiation sensor, the display or indicator device, the wireless communication module, and the ambient light sensor. The processor is also configured to assist in determining the level of the light radiation exposure event based on the output of the ambient light sensor.

[0024] Furthermore, the output of the light radiation state indication is achieved by waking up the display or indication device.

[0025] Furthermore, the electronic terminal also includes a display or indicator device and a wireless communication module.

[0026] Furthermore, the second intensity threshold is greater than the first intensity threshold.

[0027] Furthermore, the dormancy threshold is less than the first intensity threshold.

[0028] Furthermore, the light radiation intensity is the light radiation index; the sleep level corresponds to a preset sleep threshold range; the first level corresponds to a preset first intensity threshold range; the second level corresponds to a preset second intensity threshold range, and the second intensity threshold range is higher than the first intensity threshold range; the threshold range is a configurable parameter that can be adjusted in the settings of the electronic terminal or on an external device with a communication connection.

[0029] Furthermore, the threshold for determining the level of light radiation exposure events is adaptively adjusted based on at least one of historical light radiation exposure data, user skin type, time period, or user preferences.

[0030] Furthermore, the determination of the light radiation exposure event level is based on at least one of light radiation intensity, light radiation intensity change rate, and duration of continuous exposure; the processor receives light radiation intensity data output by the light radiation sensing component and determines the corresponding light radiation exposure event level according to the preset level determination rules.

[0031] Furthermore, the electronic terminal can be a mobile phone, smartwatch, smart bracelet, ultraviolet monitoring pendant, smart umbrella handle, or vehicle-mounted ultraviolet monitoring module.

[0032] Furthermore, the process of comparing the ambient light intensity output by the ambient light sensing component with the light radiation intensity output by the light radiation sensing component is as follows: Calculate the difference or ratio between the light radiation intensity and the ambient light intensity; When the difference is greater than a preset difference threshold, or the ratio is greater than a preset ratio threshold, it is determined that there is a target band optical radiation exposure event. When the difference is not greater than a preset difference threshold and the ratio is not greater than a preset ratio threshold, it is determined that the light radiation intensity is affected by ambient light, and the light radiation exposure event level is not triggered or reduced.

[0033] In this embodiment, the light radiation exposure event level includes at least a dormant level, a first level, and a second level, wherein the exposure risk corresponding to the second level is greater than the exposure risk corresponding to the first level; and the exposure risk corresponding to the dormant level is less than the exposure risk corresponding to the first level.

[0034] When the detected light radiation intensity reaches the first intensity threshold TH1, the processor classifies the current light radiation exposure event as Level 1. Level 1 can be used to characterize that the user has entered a light radiation exposure environment that requires attention, such as a medium-intensity ultraviolet environment, a strong visible light irradiation environment, or other preset light radiation environments.

[0035] The processor classifies the current light radiation exposure event as Level 2 when the detected light radiation intensity reaches the second intensity threshold TH2 and at least one of the following conditions is met: (1) The rate of change of light radiation intensity exceeds the preset rate of change threshold RateTH; (2) The duration of the light radiation intensity remaining at the second intensity threshold TH2 exceeds the first duration threshold T1.

[0036] Among them, the second intensity threshold TH2 is greater than the first intensity threshold TH1.

[0037] The rate of change of light radiation intensity can be calculated based on the amount of change in light radiation intensity within a continuous sampling period. For example, the processor can calculate the change per unit time based on the light radiation intensity values ​​corresponding to two adjacent sampling moments and use it as the rate of change of light radiation intensity.

[0038] When the light radiation intensity reaches the second intensity threshold TH2, the processor starts timing for the duration. The timer continues to accumulate as long as the light radiation intensity remains above the second intensity threshold TH2; when the light radiation intensity falls below the second intensity threshold TH2, the timer is reset or paused.

[0039] For example, when a user quickly moves from indoors to a strong outdoor sunlight environment, the intensity of light radiation may increase rapidly within a short period of time. In this scenario, the rate of change of light radiation intensity can quickly reach the preset rate of change threshold RateTH. Therefore, even if the continuous exposure time has not yet reached the first duration threshold T1, the system can still classify the current event as Level 2, thereby triggering the reminder function in a timely manner.

[0040] When a user is in an outdoor environment for a long time and the light radiation intensity increases slowly, even if the rate of change of light radiation intensity does not reach the preset rate of change threshold RateTH, the system can still classify the current event as Level 2 after the light radiation intensity reaches the second intensity threshold TH2 and continues to reach the first duration threshold T1, so as to reflect the potential risks brought about by cumulative exposure.

[0041] In some embodiments, the electronic terminal is also used to acquire geographic location information and / or time information, and dynamically adjust the threshold for determining the level of light radiation exposure events based on the geographic location information and / or time information.

[0042] Specifically, the current geographical location information is obtained through the positioning module and the current time information is obtained through the clock module. Based on the obtained information, the processor determines the corresponding threshold configuration parameters and adjusts the first intensity threshold, the second intensity threshold, the rate of change threshold and / or the duration threshold accordingly.

[0043] For example, when the electronic terminal is located in a high-altitude area, the intensity threshold corresponding to the light radiation exposure event level can be appropriately reduced; when the electronic terminal is located in a low-altitude area, the default threshold configuration can be used.

[0044] Based on time information, it is determined whether the current time is noon or not, and different event level judgment thresholds are used to improve the accuracy of event judgment.

[0045] By dynamically adjusting the judgment threshold by combining geographical location information and / or time information, this embodiment can make the judgment of light radiation exposure event level more in line with actual environmental conditions, thereby improving the reliability and adaptability of the alert.

[0046] Example 1: Basic power consumption control method; The optical radiation sensing component can be of type UVI-01, Si1133, GUVA-S12SD, or other photoelectric sensing components with a target-sensitive wavelength band. The sensing component outputs optical radiation intensity values ​​(e.g., UVI) at a configurable sampling frequency. The sampling frequency can be dynamically adjusted, using low-frequency sampling (e.g., once every 30 seconds) in low-power mode and medium-frequency sampling (e.g., once every 5 seconds) in local display mode.

[0047] Taking ultraviolet light as an example, such as Figure 2 As shown, the following light radiation exposure event levels are defined in this embodiment: Level 0 (Low Exposure): The light radiation intensity reaches the first intensity threshold TH1 (e.g., UVI < 3). Users are exposed to a low UV environment and no protective reminders are required.

[0048] Level 1 (Moderate Exposure): The light radiation intensity reaches the first intensity threshold TH1 (e.g., UVI ≥ 3), but has not yet met the Level 2 requirements. Users need to obtain protection status information.

[0049] Level 2 (High Exposure): The light radiation intensity reaches the second intensity threshold TH2 (e.g., UVI ≥ 6), and meets at least one of the following additional conditions: (a) the rate of change of light radiation intensity exceeds the rate of change threshold (e.g., the UVI rise slope ΔUVI / Δt exceeds the preset Rate_TH within M consecutive sampling periods); (b) the duration of light radiation intensity at the second intensity threshold TH2 is ≥ the first duration threshold T1 (e.g., more than 30 seconds).

[0050] Level 3 (Extremely High Exposure): The light radiation intensity reaches the third intensity threshold TH3 (e.g., UVI≥8), and meets the corresponding rate of change or duration conditions.

[0051] It's worth noting that the introduction of the rate of change condition addresses the shortcomings of a simple intensity threshold. For example, a user moving from indoors (UVI≈0) to outdoors at midday (UVI≈10) takes only a few seconds, but relying solely on the duration condition might require waiting tens of seconds to trigger Level 2, resulting in a delayed alert. The rate of change condition can quickly trigger an alert when UVI rises sharply.

[0052] like Figure 3 As shown, the power consumption state is switched according to the level of the light radiation exposure event; When the state is determined to be Level 0, and the current state is not a low-power state: if Level 0 continues for more than the fallback duration T fallback (e.g., 60 seconds) Switch to low power mode. In low power mode, the display or indicator device is turned off or enters intermittent flashing mode, the wireless communication module enters sleep or very low duty cycle broadcast mode, and only the optical radiation sensing component is retained for low-frequency sampling.

[0053] When the light radiation exposure event level rises from Level 0 to Level 1: Exit the low power state and wake up the display or indicator device to output UV status indication (such as LED color change, OLED display of UVI value and / or protection status prompt). The wireless communication module remains in sleep mode.

[0054] When the light radiation exposure event level rises to Level 2 or above: the wireless communication module is activated (e.g., BLE broadcasting or establishing a connection) to send a UV alert signal to the paired mobile terminal. Simultaneously, the display or indicator device outputs an enhanced alert (e.g., LED flashing + screen high brightness).

[0055] When the level of a light radiation exposure event drops from Level 2 to Level 1 or below, and the drop continues for a duration T... fallback Then: The wireless communication module returns to sleep mode.

[0056] When the level of a light radiation exposure event drops from Level 1 to Level 0, and remains below Level T fallback Then: Return to low-power state.

[0057] The definition of hysteresis control is: Conditions for the light radiation exposure event level to fall back to low power state (requires Level 0 duration T) fallbackThe light radiation level is below the threshold required to wake up the display or indicator from a low-power state (Level 1 required, i.e., UVI ≥ TH1). This forms the hysteresis interval [TH0 fallback confirmation interval, TH1 wake-up threshold]. Hysteresis control prevents the terminal from repeatedly switching states as the light radiation intensity fluctuates around TH1. It is worth noting that even within the hysteresis interval, the sensor can continue to sample, and the processor continues to track the state without switching the output.

[0058] In some embodiments, to further improve the stability of power consumption state switching and to balance the need for timely reminders and power consumption optimization, the hysteresis control mechanism is configured with different fallback duration parameters for different state fallback processes.

[0059] Specifically, the electronic terminal includes at least a low-power state, a local display state, and a communication alert state, wherein: Low power mode is used to shut down or limit the operation of display devices, indicator devices and wireless communication modules to reduce system power consumption; The local display status is used to enable display devices or indicator devices to present current light radiation information or exposure level information to the user; The communication alert status is used to enable the wireless communication module to send alert information to user terminals, cloud servers, or associated devices.

[0060] When the light radiation exposure event level reaches Level 2, the electronic terminal switches from local display mode to communication alert mode; when the light radiation exposure event level drops, the electronic terminal does not immediately exit the communication alert mode, but starts the second fallback duration Tfallback2 timer. Once the light radiation exposure event level is no longer at level two, the processor begins to accumulate the fallback duration; only when the fallback state continues to reach the second fallback duration Tfallback2, the processor controls the electronic terminal to switch from communication reminder state to local display state. When the electronic terminal is in local display mode, if the light radiation exposure event level further drops below level one or below the preset display maintenance condition, the first fallback duration Tfallback1 will be started. Only when this fallback state continues for the first fallback duration Tfallback1 will the processor control the electronic terminal to switch from local display mode to low power mode.

[0061] Furthermore, when the electronic terminal is in local display mode, if the light radiation exposure event level further drops below the first level or below the preset display maintenance condition, the first fallback duration Tfallback1 is started. Only when this fallback state continues for the first fallback duration Tfallback1 will the electronic terminal be controlled to switch from local display mode to low power mode.

[0062] The second fallback duration Tfallback2 is configured independently of the first fallback duration Tfallback1, and the two can be set to different values.

[0063] In one example, the first fallback duration Tfallback1 can be set to 60 to 300 seconds, and the second fallback duration Tfallback2 can be set to 10 to 60 seconds.

[0064] In another example, Tfallback2 is less than Tfallback1, that is: Tfallback2 <Tfallback1。

[0065] Since the communication alert state corresponds to a higher level of exposure risk, it can exit the communication alert state more quickly after the risk is reduced to reduce repeated reminders; while the local display state corresponds to the user's continuous need to pay attention to environmental information, so a longer fallback time is used before entering the low power state to avoid the display device frequently turning on and off due to environmental fluctuations.

[0066] For example, when a user moves from a sunny area to a shady area, the light radiation exposure event level may drop from level two to level one. At this time, the electronic terminal remains in communication alert mode until the dropout state lasts for the second dropout duration, Tfallback2, after which it exits the communication alert mode and resumes local display mode.

[0067] As the user continues to enter the indoor environment, the light radiation intensity continues to decrease, and the exposure event level further reaches the dormant level, the electronic terminal maintains the local display state until the fallback state continues for the first fallback duration Tfallback1, after which the display device is turned off and enters a low power state.

[0068] By setting the second fallback duration for the communication alert status and the first fallback duration for the local display status respectively, a hierarchical and differentiated hysteresis control mechanism is achieved.

[0069] Example 2: A refined scheme for multi-stage hysteresis control; like Figure 4 As shown, this embodiment provides a more refined definition of a three-level hysteresis control scheme: Upper threshold U1 (wake-up display) = Level 1 (UVI≥TH1); Lower threshold D1 (entering low power) = Level 0 duration T fallback1 ; Upper threshold U2 (initiate communication) = Level 2 condition satisfied; The lower threshold D2 (communication closed) = falls back below Level 2, lasting T_fallback2; Where U2 > U1 > D1, and D2 lies between the conditions of Level 1 and Level 2. The hysteresis interval is designed as follows: Display wake-up hysteresis: U1 - D1 Communication startup hysteresis: U2 - D2 When frequent cloud changes cause the UVI to fluctuate around U1, the display status only wakes up when it first crosses U1, and then falls back to D1 and remains there for T. fallback1 It only goes into hibernation later, effectively reducing the frequency of switching.

[0070] In one example, when the light radiation intensity changes from low to high and first reaches the Level 1 condition, the display device is woken up and enters the local display state. Thereafter, even if the light radiation intensity fluctuates briefly around Level 1, the display device remains in its current state as long as the fallback condition corresponding to D1 is not met. Only when the light radiation intensity falls back to Level 0 and the duration reaches Tfallback1 does the display device switch back to the low-power state.

[0071] Furthermore, when the light radiation intensity continues to increase and meets the Level 2 condition, the wireless communication module is activated and sends an alert message to the user terminal, cloud server, or associated device. Thereafter, even if the light radiation intensity drops briefly, as long as the condition of falling below Level 2 and remaining at Tfallback2 is not continuously met, the wireless communication module maintains the communication alert state. When the fallback condition is met, the wireless communication module exits the communication alert state.

[0072] For example, in scenarios with rapidly moving clouds and frequent changes in obstruction, the intensity of light radiation may fluctuate repeatedly around the threshold corresponding to Level 1. By employing the aforementioned multi-level hysteresis control mechanism, the display device is only awakened upon first crossing U1 and enters sleep mode only after conditions D1 and Tfallback1 are met; the wireless communication module only initiates an alert upon first reaching condition U2 and stops communication only after conditions D2 and Tfallback2 are met, thereby effectively reducing state jitter and frequent switching, lowering system power consumption, and improving user experience and device reliability.

[0073] Example 3: Multi-dimensional event determination based on rate of change and duration; like Figure 5 As shown, this embodiment provides several combination strategies for determining conditions: Scenario A (Rapid Exposure): A user rapidly enters a bright outdoor environment from indoors. The UVI value rises sharply from approximately 0 to approximately 8-10 within a short period (e.g., within 5 seconds). At this point, the rate of change (dUVI / dt) exceeds the Rate. TH The system quickly fulfills its requirements, triggering a Level 2 alert immediately upon the UVI reaching TH2, regardless of the duration. This mechanism ensures timely alerts even in scenarios involving rapid sun exposure.

[0074] Scenario B (Slow Exposure): Users are outdoors for an extended period, and the UVI rises slowly (e.g., UVI slowly rises from 3 to 7 over 30 minutes in cloudy weather). In this scenario, the rate of change condition may not be met (due to low dUVI / dt), but the duration condition can be triggered—a Level 2 alert is triggered when UVI ≥ TH2 persists beyond T1. This mechanism ensures that alerts are provided even in scenarios of slow, cumulative exposure.

[0075] Scenario C (Fluctuating Exposure): The user walks alternately between shade and sunlight. The UVI fluctuates frequently between TH1 and TH2. Both the rate of change condition and the duration condition are partially satisfied but not consistently satisfied. In this case, hysteresis control ensures that the terminal does not frequently switch between these conditions.

[0076] In some embodiments, to improve the accuracy and scene adaptability of light radiation exposure event identification, the electronic terminal not only determines the event level based on light radiation intensity, but also combines at least one of light radiation intensity change rate and exposure duration for multi-dimensional comprehensive determination.

[0077] A high-level exposure event can be identified when the light radiation intensity reaches the second threshold TH2 and the rate of change of light radiation intensity reaches the rate of change threshold RateTH; a high-level exposure event can be identified when the light radiation intensity reaches the second threshold TH2 and continues for more than the preset duration T1; a high-level exposure event can be triggered when either the rate of change condition or the duration condition is met; or, a high-level exposure event can be triggered when both the rate of change condition and the duration condition are met.

[0078] For example, when a user quickly moves from indoors to a bright outdoor environment, the intensity of light radiation can rise rapidly within a short period. In this case, the rate of change condition can be prioritized, thereby triggering a high-level exposure event to improve the timeliness of alerts.

[0079] When a user is in an outdoor environment for an extended period of time and the light radiation intensity increases slowly, even if the rate of change condition does not reach the rate of change threshold RateTH, a high-level exposure event can still be triggered when the light radiation intensity reaches the second threshold TH2 and continues for more than the preset duration T1, in order to reflect the cumulative exposure risk.

[0080] In scenarios with fluctuating light radiation, such as areas where sunlight and shade alternate or where cloud cover changes rapidly, the intensity of light radiation may repeatedly change around different threshold levels. In such cases, a hysteresis control mechanism can be used to stably determine the event level, thereby reducing frequent switching between the display device and the wireless communication module.

[0081] Example 4: Device Example; like Figure 6 As shown, an electronic terminal 100 includes: Optical radiation sensing component 110: used to collect ambient light radiation intensity and output electrical signals (analog or digital).

[0082] Display or indicator device 120: such as multi-color LED, OLED / LCD display or e-ink screen.

[0083] Wireless communication module 130: such as BLE, Wi-Fi or NB-IoT module.

[0084] Processor 140: such as an ARM Cortex-M series MCU or a SoC with integrated BLE (such as the Nordic nRF52 series, TICC26xx series). Processor 140 is electrically connected to sensor 110, display device 120 and communication module 130.

[0085] Power module 150: such as a rechargeable lithium battery + charging management circuit.

[0086] Memory 160: Stores preset threshold parameters, operating mode parameters, and processor-executable instructions.

[0087] Ambient light sensor 170: As an optional extension component in the system embodiment, it is used to collect ambient light intensity. It can be a photoresistor, an ambient light sensing IC, or other ambient light detection devices, and is electrically connected to the processor 140. The processor 140 can, based on the ambient light intensity output by the ambient light sensor 170 and in combination with the light radiation intensity output by the light radiation sensing component 110, assist in determining whether the current environment is an indoor environment or a nighttime environment, and assist in determining the level of light radiation exposure events. The ambient light sensor 170 is not a necessary component of the device according to claim 14.

[0088] Processor 140 executes the methods described in embodiments 1-3 above.

[0089] The electronic terminal 100 is not limited to a specific product form and can be a mobile phone, smartwatch, smart bracelet, stand-alone UV monitoring pendant, smart umbrella handle, vehicle-mounted UV monitoring module or smart wearable accessory, etc.

[0090] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for controlling the power consumption of electronic terminals based on optical radiation exposure events, characterized in that, Includes the following steps: The light radiation intensity of at least one target band light radiation data output by the light radiation sensing component; The level of a light radiation exposure event is determined based on the light radiation intensity, and at least one of the light radiation intensity change rate and duration. When the light radiation exposure event level is at the sleep level, control the electronic terminal to enter a low power consumption state; When the light radiation exposure event level is at the first level, the electronic terminal is controlled to enter the local display state and output a light radiation status indication. When the light radiation exposure event level is at level two, the electronic terminal is controlled to enter the communication reminder state, and the wireless communication module is activated to send a light radiation reminder signal; wherein, the light radiation fall-off condition for entering the low power state is lower than the light radiation reaching condition for waking up the display or indicator device from the low power state, so as to form hysteresis control.

2. The method according to claim 1, characterized in that, The determination of the level of the optical radiation exposure event includes: When the light radiation intensity reaches the sleep threshold, it is determined to be the sleep level; When the light radiation intensity reaches a dormancy threshold that is lower than a first intensity threshold, it is determined to be the first level; When the light radiation intensity reaches a first intensity threshold but is lower than a second intensity threshold, and at least one of the following conditions is met, it is determined to be at the second level: The rate of change of light radiation intensity exceeds a preset rate of change threshold; the duration during which the light radiation intensity continuously exceeds the second intensity threshold is greater than a first duration threshold. When the light radiation intensity reaches the second intensity threshold, it is determined to be at the third level.

3. The method according to claim 1, characterized in that, The hysteresis control process includes: After the light radiation exposure event level drops from the first level or above to the sleep level, the electronic terminal is controlled to enter the low power state after a first drop-off period.

4. The method according to claim 1, characterized in that, The optical radiation sensing component acquires the optical radiation intensity of at least one target band optical radiation data at a first sampling frequency; in a non-low power state, it acquires the optical radiation intensity of at least one target band optical radiation data at a second sampling frequency higher than the first sampling frequency.

5. The method according to claim 1, characterized in that, The transmission logic of the optical radiation warning signal is as follows: When the light radiation exposure event level includes at least a dormant level, a first level, a second level, and a third level, a light radiation alert signal carrying an emergency identifier is sent via the wireless communication module only when the third level is reached.

6. The method according to claim 5, characterized in that, Before sending the light radiation warning signal, the wireless communication module also includes: In low power mode, the module enters sleep or intermittent broadcast mode; in the communication reminder mode, the wireless communication module enters continuous broadcast or connection mode.

7. The method according to claim 1, characterized in that, Before the electronic terminal is put into communication alert mode, the method further includes: Obtain the current usage scenario information of the electronic terminal; adjust the determination conditions of the first level and the second level according to the usage scenario information.

8. The method according to claim 1, characterized in that, The conditions that the rate of change of light radiation intensity must satisfy also include: Within a continuously preset number of sampling periods, the rate of increase of the light radiation intensity exceeds a preset rate of change threshold.

9. The method according to claim 3, characterized in that, The hysteresis control also includes: A second fallback duration applies when the communication alert state falls back to the local display state, and the second fallback duration is independent of the first fallback duration configuration when the local display state falls back to the low power state.

10. The method according to claim 1, characterized in that, After obtaining the light radiation intensity, the method further includes: Acquire the output of the ambient light sensor component; The ambient light intensity output by the ambient light sensing component is compared with the light radiation intensity output by the light radiation sensing component; and based on the comparison result, it is determined whether the current environment is an indoor environment or a nighttime environment.

11. The method according to claim 1, characterized in that, The determination of the level of the optical radiation exposure event also includes: Acquire the target band optical radiation intensity output by at least two optical radiation sensing components of different bands, or the fused data of multiple sensing components; verify the confidence level of the optical radiation exposure event determination based on the fused data of multiple sensing components.

12. The method according to claim 1, characterized in that, After verifying the confidence level of the optical radiation exposure event classification, the following is also included: Obtain geographic location information and / or time information; and adjust the threshold for determining the level of the light radiation exposure event based on the geographic location information and / or time information.

13. The method according to claim 1, characterized in that, The threshold for determining the level of light radiation exposure events is adaptively adjusted based on at least one of the following: historical light radiation exposure data, user skin type, time period, or user preferences.

14. An electronic terminal, characterized in that, include: Optical radiation sensor; Display or indicating device; Wireless communication module; The processor is electrically connected to the optical radiation sensor, the display or indicator device, and the wireless communication module. The power module is used for power supply; The processor is configured to perform the method of any one of claims 1 to 13.

15. The electronic terminal according to claim 14, characterized in that, Also includes: An ambient light sensor is used to collect ambient light intensity and is electrically connected to the processor; The processor is also configured to assist in determining the level of the light radiation exposure event based on the output of the ambient light sensor.

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