Television watching distance monitoring and reminding system and method

Abstract

The invention provides a television watching distance monitoring and reminding system and method. The television watching distance monitoring and reminding system comprises a multi-mode sensing module, a sensor fusion and target recognition unit, an intelligent decision module and a man-machine interaction module, the multi-mode sensing module comprises an electromagnetic wave radar module and an infrared thermal imaging module; the electromagnetic wave radar module is used for acquiring sensing data of a detection target in a front area of the television; the infrared thermal image module is used for acquiring an infrared thermal image of an area in front of the television; the sensor fusion and target identification unit is used for determining whether the detection target is a child or not according to the sensing data and the infrared thermogram; the intelligent decision-making module is used for determining whether the first distance between the detection target represented by the sensing data and the television is smaller than a preset safety threshold value or not when the detection target is a child; when the first distance is smaller than a preset safety threshold value, a reminding instruction is generated; and the man-machine interaction module is used for generating a first alarm prompt according to the reminding instruction.

Description

Technical Field

[0001] This disclosure relates to the fields of smart TVs, children's health, and human-computer interaction technologies, and in particular to a TV viewing distance monitoring and reminder system and method. Background Technology

[0002] Among children's vision health problems, prolonged and close-range television viewing is a recognized major contributing factor. Children's eyes are still developing; while their lenses have strong accommodative abilities, they are also more fragile. Continuously staring at a television screen at close range keeps the ciliary muscles in a state of prolonged tension and contraction, easily leading to ciliary muscle fatigue. Over time, this can cause a decline in accommodative function, eventually developing into myopia. Furthermore, the blue light emitted from the television screen continuously stimulates children's delicate retinas. Combined with the high visual load of close-range viewing, this not only accelerates eye fatigue but may also cause potential damage to retinal photoreceptor cells, further exacerbating the risk of vision decline and posing a threat to children's long-term vision health. However, current smart TVs lack proactive intervention regarding children's actual viewing distance, further aggravating the risk of vision loss in children. Summary of the Invention

[0003] This disclosure provides a television viewing distance monitoring and reminder system and method to address the problem that existing smart TVs lack proactive intervention regarding children's actual viewing distance, leading to a further increase in the risk of vision decline in children.

[0004] In view of the above problems, firstly, the present disclosure provides a television viewing distance monitoring and reminder system, comprising: Multimodal perception module, sensor fusion and target recognition unit, intelligent decision-making module and human-computer interaction module; The multimodal sensing module includes: an electromagnetic wave radar module and an infrared thermal imaging module; The electromagnetic wave radar module is used to collect sensing data of the target detection area in front of the television. The infrared thermal imaging module is used to acquire infrared thermal images of the area in front of the television. The sensor fusion and target recognition unit is used to determine whether the detected target is a child based on the sensing data and the infrared thermal image; The intelligent decision-making module is used to determine whether the first distance between the detected target and the television, as represented by the sensing data, is less than a preset safety threshold when the detected target is a child; and to generate a reminder instruction if the first distance is less than the preset safety threshold. The human-computer interaction module is used to generate a first alarm prompt based on the reminder instruction.

[0005] Secondly, a method for monitoring and reminding viewers of their TV viewing distance is provided, including: Collect sensor data on targets detected in the area in front of the television; Collect infrared thermal images of the area in front of the television; Based on the perceived data and the infrared thermal image, determine whether the detected target is a child; If the target being detected is a child, determine whether the first distance between the target and the television, as represented by the sensing data, is less than a preset safety threshold; and if the first distance is less than the preset safety threshold, generate a reminder instruction. Based on the notification instruction, a first alarm notification is generated.

[0006] The beneficial effects of the embodiments disclosed herein include: This disclosure provides a television viewing distance monitoring and reminder system and method, comprising: a multimodal perception module, a sensor fusion and target recognition unit, an intelligent decision-making module, and a human-computer interaction module; the multimodal perception module includes: an electromagnetic wave radar module and an infrared thermal imaging module; the electromagnetic wave radar module is used to collect perception data of a target in the area in front of the television; the infrared thermal imaging module is used to collect an infrared thermal image of the area in front of the television; the sensor fusion and target recognition unit is used to determine whether the target is a child based on the perception data and the infrared thermal image; the intelligent decision-making module is used to determine whether a first distance between the target and the television, as represented by the perception data, is less than a preset safety threshold when the target is a child; and generates a reminder command when the first distance is less than the preset safety threshold; the human-computer interaction module is used to generate a first alarm prompt based on the reminder command. The television viewing distance monitoring and reminder system provided in this disclosure completely abandons traditional optical cameras and uses infrared thermal imaging technology and electromagnetic wave radar technology to construct the monitoring core. Infrared thermal imaging technology focuses on capturing infrared thermal images, while electromagnetic radar technology focuses on sensing the electromagnetic reflection signals of objects. The entire monitoring process does not require the collection of any sensitive visual information such as the user's facial features or indoor furnishings, completely eliminating the risk of family privacy leaks from the source, making it particularly suitable for the core scenario of family child monitoring. Furthermore, through technological integration, the centimeter-level precise ranging advantage of electromagnetic radar is organically combined with the clear contour perception capability of infrared thermal imaging. This not only keenly detects targets approaching the television but also accurately locates and calculates the actual distance between the child user and the screen, effectively avoiding false alarms caused by pets approaching or furniture obstructing the view, and eliminating missed detections of children. Both electromagnetic radar and infrared thermal imaging technologies have strong environmental adaptability, unaffected by lighting conditions. Whether in dim nighttime, bright midday light, or low-light environments, they can stably output reliable monitoring data. In addition, the system can be set with flexible alert strategies, from friendly prompts to mandatory intervention, resulting in better guidance and a superior user experience. Furthermore, the system has the ability to recognize and distinguish multiple targets. It can monitor the distance to multiple children at the same time and accurately distinguish between children and adults, thereby implementing targeted reminder strategies, such as activating the viewing distance monitoring and reminder mechanism only for child users. Attached Figure Description

[0007] Figure 1 A structural diagram of the television viewing distance monitoring and reminder system provided in this embodiment of the disclosure; Figure 2 A schematic diagram illustrating the principle of sensor fusion for identifying children provided in this embodiment of the disclosure; Figure 3 A flowchart illustrating the workflow of the television viewing distance monitoring and reminder system provided in this embodiment of the disclosure; Figure 4A flowchart of a television viewing distance monitoring and reminder method provided in an embodiment of this disclosure. Detailed Implementation

[0008] This disclosure provides a television viewing distance monitoring and reminder system and method. The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this disclosure. Furthermore, the embodiments and features described in this application can be combined with each other unless otherwise specified.

[0009] This disclosure provides a television viewing distance monitoring and reminder system, such as... Figure 1 As shown, it includes: a multimodal perception module 101, a sensor fusion and target recognition unit 102, an intelligent decision-making module 103, and a human-computer interaction module 104; The multimodal sensing module 101 includes an electromagnetic wave radar module 1011 and an infrared thermal imaging module 1012; Electromagnetic wave radar module 1011 is used to collect sensing data of targets in the area in front of the television. Infrared thermal imaging module 1012 is used to acquire infrared thermal images of the area in front of the television. The sensor fusion and target recognition unit 102 is used to determine whether the detected target is a child based on the sensing data and infrared thermal image; The intelligent decision module 103 is used to determine whether the first distance between the detected target and the television, as represented by the perception data, is less than a preset safety threshold when the detected target is a child; and to generate a reminder instruction if the first distance is less than the preset safety threshold. The human-computer interaction module 104 is used to generate the first alarm prompt based on the reminder instruction.

[0010] In this embodiment of the disclosure, prolonged and close-range television viewing is one of the main causes of vision decline in children. Although there are various solutions in the prior art that attempt to alleviate this problem, they all have obvious limitations: First, there is the camera visual recognition solution, which identifies the user's (especially a child's) face through an ordinary optical camera and estimates the viewing distance based on the size of the face. However, this not only poses a serious risk of family privacy leakage due to the camera continuously capturing the living room scene, but also has a strong environmental dependence. In dimly lit scenes, or when the user is facing away from or to the side of the camera, the recognition rate drops sharply. The method of estimating distance based solely on 2D image information is not accurate enough and is easily affected by obstructions. Second, there is the single sensor solution, such as the solution using ultrasonic or a single infrared sensor. This type of solution can usually only detect whether there is an object directly in front of the television, and cannot effectively distinguish between people and objects (such as walking pets, indoor furniture, etc.), nor can it accurately identify a child as a specific target, resulting in a high false alarm rate and poor practicality. Third, there is the passive reminder solution. Although some televisions are equipped with a manual timed reminder function, this function cannot actively and intelligently intervene based on the child's actual viewing distance. In summary, there is an urgent need for a technical solution that can protect family privacy while providing accurate and automatic monitoring, and specifically monitor and remind children of their TV viewing distance.

[0011] In this embodiment, the multimodal sensing module 101 comprehensively captures information about the target in front of the television. It includes an electromagnetic wave radar module 1011 and an infrared thermal imaging module 1012. The electromagnetic wave radar module 1011 and the infrared thermal imaging module 1012 work together to overcome the limitations of a single sensor, providing comprehensive and accurate raw data support for subsequent identification and judgment. The electromagnetic wave radar module 1011 is used to collect key sensing data of the target in front of the television, such as the first distance between the target and the television, the relative velocity, and the azimuth and elevation angles of the target. Its ranging accuracy can reach the centimeter level and is unaffected by environmental factors such as light and obstruction. The infrared thermal imaging module 1012 is used to collect infrared thermal images of the area in front of the television. For example, by capturing differences in the thermal radiation of the target, it outlines the heat source contour, thereby accurately locating living beings in the area while avoiding the generation of image data involving privacy. The sensor fusion and target recognition unit 102 receives the sensing data and infrared thermal images from the multimodal sensing module 101 and determines whether the target is a child based on the sensing data and infrared thermal images. For example, the sensor fusion and target recognition unit 102 performs target association and child recognition operations. Target association involves spatially matching the target detected by the electromagnetic radar with the heat source contour acquired by the infrared thermal imaging module to confirm whether the target is a living being. Child recognition involves comparing the height, width, and area features of the heat source contour after fusion of the sensing data and the infrared thermal image with a preset child body shape feature database to distinguish between adult and child users. After confirming that the target is a child, the intelligent decision module 103 extracts the first distance representing the child from the television from the sensing data and compares this distance with a preset safe distance threshold (set according to the television screen size and industry health standards). If the first distance is determined to be less than the preset safe threshold, a corresponding reminder instruction is immediately generated. For example, the reminder instruction content matches the degree of distance exceeding the limit, providing a clear basis for subsequent alarm actions.

[0012] Furthermore, the human-computer interaction module 104 transforms the reminder command into an intuitive first alarm prompt. After receiving the reminder command sent by the intelligent decision-making module 103, the human-computer interaction module 104 will quickly generate a first alarm prompt. The prompt may take the form of displaying graphical warning information in a pop-up window on the screen, emitting an audio prompt, etc., so that children and parents can promptly notice the problem of exceeding the distance limit and adjust their viewing position in time, thereby achieving the purpose of protecting children's eyesight.

[0013] This application completely eliminates the need for optical cameras, employing infrared thermal imaging to perceive the contours of thermal radiation and electromagnetic radar to perceive the electromagnetic reflection of objects. It avoids acquiring sensitive visual information such as user facial features and indoor furnishings, fundamentally eliminating the risk of privacy leaks, making it particularly suitable for family child monitoring scenarios. By integrating the precise ranging capability of electromagnetic radar and the contour perception capability of infrared thermal imaging, it can not only detect the approach of a target but also accurately determine the distance between the child user and the screen, significantly reducing false alarms (such as pets approaching) and missed alarms. Both the precise ranging capability of electromagnetic radar and the contour perception capability of infrared thermal imaging are unaffected by ambient light (bright, dark, strong light, weak light), providing reliable monitoring services in any lighting environment. The system can be configured with flexible alert strategies, ranging from friendly prompts to mandatory intervention, resulting in better guidance and a superior user experience. It can monitor multiple children simultaneously or differentiate between children and adults, applying different alert strategies to different targets (such as providing distance alerts only to children).

[0014] In another embodiment of this disclosure, the sensing data includes at least one of the following: a first distance between the detection target and the television, the speed of the detection target relative to the television, and the angle of the detection target relative to the television; Infrared thermal images include: the outline of the heat source.

[0015] In this embodiment, the electromagnetic wave radar module 1011 is used to collect perception data of a target detected in front of the television. The perception data includes at least one of the following: the first distance between the target and the television (providing a core basis for determining whether a child is in a safe area), the speed of the target relative to the television (which can help determine whether the target is stationary), and the angle of the target relative to the television (which can determine the specific location of the target in front of the television, including azimuth and elevation angles). The perception data collected by the electromagnetic wave radar module 1011 has high accuracy and is not affected by ambient light. The infrared thermal imaging module 1012 focuses on infrared thermal imaging of the area in front of the television. The core content of the infrared thermal imaging is the outline of the heat source. An infrared thermal image is a special image that captures the thermal radiation of an object by the infrared thermal imaging module 1012 and converts it into a visual image. It does not rely on visible light but uses the infrared radiation (thermal radiation) emitted by the object itself as the imaging basis. Objects of different temperatures will show different grayscale or color differences in the image. Areas with higher temperatures are usually displayed with brighter tones or specific warm colors, while areas with lower temperatures are presented with darker tones or cool colors. Infrared thermal imaging is used to capture the overall thermal radiation distribution in the area in front of a television. Its core function is to detect living beings (such as people and pets) within the area, without recording textures, details, or other privacy-sensitive visual information, thus avoiding the risk of privacy leaks at the source. The heat source outline is the outline of an object or boundary region extracted from the infrared thermal image, possessing distinct thermal radiation characteristics. In an infrared thermal image, living beings (such as children) form a distinct high-temperature area due to their constant body temperature, clearly demarcating from the low-temperature areas of the surrounding environment (such as furniture, walls, and other inanimate objects). This demarcation outline is the heat source outline. The heat source outline contains key shape information of the detected target, such as height, width, and outline area, and is the core basis for distinguishing between living and non-living beings, and between children and adults. By capturing the differences in thermal radiation of different objects, the outline of living beings within the area is clearly delineated, providing crucial visual evidence for subsequent differentiation between living and non-living beings, without involving the collection of private images.

[0016] In another embodiment of this disclosure, the sensor fusion and target recognition unit 102 is used to perform spatial matching between the detected target and the heat source contour based on the sensing data and the heat source contour to confirm whether the detected target is a living organism. If the target is a living organism, the sensing data is fused with the heat source outline to obtain the fused heat source outline. Based on the fused heat source profile, determine whether the target is a child.

[0017] In this embodiment, the sensor fusion and target recognition unit 102 combines the sensing data and the heat source contour to perform spatial matching between the detected target and the heat source contour to confirm whether the target is a living being. Then, it fuses the sensing data and heat source contour for the living being target to generate a fused heat source contour. Finally, it determines whether the target is a child based on the fused heat source contour, completing the layered screening from "identifying a living being" to "precisely locating a child," providing accurate target information for subsequent distance monitoring and alerts. The sensor fusion and target recognition unit 102 simultaneously receives the detected target sensing data collected by the electromagnetic wave radar module 1011 and the heat source contour acquired by the infrared thermal imaging module 1012. Through spatial coordinate calibration technology, it performs a one-to-one correspondence matching between the detected target detected by the electromagnetic wave radar module 1011 and the heat source contour presented in the infrared thermal image. Because living organisms (humans, pets, etc.) continuously emit stable heat radiation, their heat source outlines are clear and completely coincide with the spatial position of the physical target. Inanimate objects, on the other hand, emit almost no significant heat radiation or their heat radiation is unstable, making it impossible to form a matching heat source outline. This allows for precise confirmation of whether the target is a living organism, completely eliminating interference from inanimate objects such as furniture and toys. After confirming the target is a living organism, the feature enhancement stage begins. Precise spatial information (such as initial distance, velocity, and angle) contained in the sensing data is deeply fused with the morphological information of the heat source outline. For example, combining the initial distance between the target and the television in the sensing data allows for calibration of the actual size of the heat source outline, avoiding visual distortion due to varying distances. Combining velocity and angle information corrects the spatial posture of the heat source outline, making it more closely resemble the actual shape of a living organism. The final fused heat source outline possesses both morphological integrity and data accuracy, providing high-quality feature data for subsequent child identification. The fused heat source contour can include precise body shape features such as the height, width, and contour area of ​​the living being. The sensor fusion and target recognition unit 102 comprehensively compares these body shape features with a preset children's body shape feature database. For example, a height threshold is set, and living beings with a height below the threshold are identified as potential child users. By associating the detected target with the heat source contour through spatial matching, living beings can be effectively distinguished from non-living objects such as furniture and ornaments, avoiding misjudging non-viewing objects by the system and significantly reducing the false alarm rate of subsequent monitoring.

[0018] In another embodiment of this disclosure, the sensor fusion and target recognition unit 102 is used to compare the body shape features of the fused heat source contour with a preset child body shape feature database to determine whether the detection target is a child; wherein, the body shape features of the fused heat source contour include at least one of the following: the height of the fused heat source contour, the width of the fused heat source contour, and the area of ​​the fused heat source contour.

[0019] In this embodiment, the sensor fusion and target recognition unit 102 first performs body shape feature extraction on the fused heat source contour. The fused heat source contour possesses both morphological integrity and data accuracy. Its body shape features are the core basis for distinguishing children from other living beings, and at least one of them is extracted, including the height, width, and area of ​​the fused heat source contour. The height of the fused heat source contour corresponds to the actual height range of the living being, the width is related to lateral body shape data such as shoulder width, and the area comprehensively reflects the overall body size of the living being. The extraction process is implemented through algorithms to ensure that the acquired feature data accurately matches the actual body shape of the target, providing reliable material for subsequent comparisons. The preset child body shape feature library is constructed based on a large amount of sample data from children of different ages, covering the average range and fluctuation range of height, shoulder width, and body shape area for children of each age group, providing scientific and comprehensive data. The sensor fusion and target recognition unit 102 compares the extracted target body shape features with the data in the preset child body shape feature library one by one. The comparison employs precise algorithms to calculate the matching degree. For example, it compares the height of the fused heat source contour with the range of children's heights in the feature database, the width of the fused heat source contour with the standard shoulder width of children, or determines whether the target matches a child's body size range based on the area of ​​the fused heat source contour. A specific matching degree threshold can be set. If the target's body shape features match the preset children's body shape feature database to or above the threshold, the target is determined to be a child; if the matching degree is below the threshold, the target is determined to be an adult, pet, or other non-monitored object. The body shape features of the fused heat source contour cover key indicators such as height, width, and area. Combined with the preset children's body shape feature database, it can effectively distinguish children from adults, pets, and other living beings, significantly reducing recognition errors. Figure 2 As shown, Figure 2 This is a schematic diagram illustrating the principle of sensor fusion for identifying children provided in this embodiment. For example, the electromagnetic wave radar sensing data 201 represents the following: Target 1 has a first distance of 1.2m and an angle of -5° (2011); Target 2 has a first distance of 1.2m and an angle of 0° (2012); Target 3 has a first distance of 1.3m and an angle of +5° (2013). The heat source contour 202 represents the following: Heat source contour A has a height of 95cm and an area of ​​0.25m². 2 (2021); Heat source profile B, height = 170cm, area = 0.45m² 2 (2022). Through spatial matching 203, the detected target was confirmed as a living being, and child identification was performed (height less than 120 cm, area less than 0.3 m²). 2 204, the target of the detection was determined to be a child, with a confidence level of 92% (205).

[0020] In another embodiment of this disclosure, the preset safety threshold is set according to a preset multiple of the diagonal size of the television screen.

[0021] In this embodiment, a safe viewing distance threshold is determined by setting a fixed preset multiple based on the diagonal size of the television screen. This preset safety threshold precisely matches the television's screen specifications, forming a scientific, personalized, and flexible safe distance standard that can be adapted to different televisions. This provides a clear and reasonable basis for subsequent judgments on whether a child's viewing distance exceeds the limit. The diagonal size of the television screen is a core specification parameter of the television and a unified standard for measuring screen size in the industry. Its value can be directly obtained from the television product parameters, making it authoritative and universal. This benchmark is chosen because viewing distance is directly related to screen size; the longer the screen diagonal, the larger the visual range covered by the image, and the longer the required safe viewing distance. This is the fundamental premise for setting a scientific safety threshold. A reasonable preset multiple is formulated by combining medical standards for children's vision protection, industry norms, and a large amount of practical application data. This preset multiple has been professionally verified; for example, the common multiple is 3 times the screen diagonal size, i.e., preset safety threshold = television screen diagonal size × preset multiple. The preset multiplier can be flexibly adjusted according to actual needs. For example, the multiplier can be appropriately increased for younger children, while the standard multiplier can be used for children with better visual development, ensuring that the threshold setting takes into account both general and personalized needs.

[0022] In another embodiment of this disclosure, the intelligent decision-making module 103 is further configured to record the duration of the first distance being less than the preset safety threshold when the first distance is less than the preset safety threshold.

[0023] In this embodiment, the intelligent decision-making module 103 automatically activates the duration recording function when the first distance between the child and the television is less than a preset safety threshold. This accurately tracks the duration of the distance exceeding the limit, providing a duration basis for subsequent tiered reminder strategies. This avoids false reminders triggered by momentary close proximity, making the system's distance intervention more reasonable and accurate. The intelligent decision-making module 103 receives the first distance data collected by the electromagnetic wave radar module 1011 in real time and compares it with the preset safety threshold calculated based on the television screen's diagonal size and a preset multiple. If the first distance is less than the preset safety threshold, the duration recording function is triggered; if the first distance is greater than or equal to the preset safety threshold, recording is not activated, ensuring that duration recording only applies to scenarios exceeding the limit.

[0024] In another embodiment of this disclosure, the human-computer interaction module 104 includes: a screen display unit 1041 and a screen / audio control unit 1042; The screen display unit 1041 is used to issue a pop-up alarm at a first preset time according to the reminder instruction and duration; The screen / audio control unit 1042 is used to reduce screen brightness and audio volume at a second preset time based on the reminder instruction and duration; and to control the TV to pause playback at a third preset time. The first preset time is less than the second preset time; the second preset time is less than the third preset time.

[0025] In this embodiment, the human-computer interaction module 104 performs the core operation of graded reminders. The human-computer interaction module 104 includes a screen display unit 1041 and a screen / audio control unit 1042. Based on the reminder command and the duration exceeding the limit, it sequentially executes graded reminder actions according to the time sequence logic of "first preset time < second preset time < third preset time," including pop-up alarms, reducing screen brightness and audio volume, and controlling the TV to pause playback. This forms a progressive alarm system from gentle prompts to mandatory intervention, ensuring timely guidance for children to adjust their viewing distance. The screen display unit 1041 focuses on visual alarm prompts, conveying information through intuitive screen images; the screen / audio control unit 1042 focuses on adjusting TV audio and video parameters and controlling playback status, guiding the user through functional intervention. Upon receiving the reminder command from the intelligent decision-making module 103, the human-computer interaction module 104, combined with the recorded duration, executes the corresponding alarm and intervention actions according to preset rules. The screen display unit 1041 receives the reminder command and duration data in real time and compares them with the first preset time. When the viewing distance exceeds the first preset time, a pop-up alarm is triggered. The pop-up can display a friendly graphical warning message, such as "You're too close to the TV! Move back a bit to protect your eyes!" The interface design is child-friendly, eye-catching yet not glaring. This visual cue gently informs children and parents that the viewing distance is too far, guiding them to adjust their viewing distance and avoiding direct impact on their viewing experience. When the viewing distance exceeds the first preset time and reaches the second preset time, the screen / audio control unit 1042 initiates intermediate intervention. On one hand, it automatically reduces the brightness of the TV screen to reduce the stimulation of strong light on children's retinas; on the other hand, it simultaneously reduces the audio volume to attract children's attention and force them to realize the distance problem and make adjustments. During this stage, viewing functionality is still maintained, giving children a buffer period to adjust. If the child still does not adjust the viewing distance, when the excessive viewing distance exceeds the third preset time, the screen / audio control unit 1042 executes the highest level of mandatory intervention, directly controlling the TV to pause the current content playback. At this time, the TV screen stops, only the warning message remains, thus completely preventing children from watching at close range until the child moves back to a safe distance, after which the TV resumes normal playback, maximizing the protection of children's eyesight. Gradually escalate the intensity of reminders based on their duration to avoid resorting to forceful measures from the outset, which could trigger resistance in children. This approach balances the effectiveness of the reminders with user experience and adapts to children's learning habits. This progressive intervention, from gentle prompts to mandatory pauses, effectively encourages children to move away from screens promptly, reducing the harm to their eyes from prolonged close-range viewing and truly achieving vision protection goals.

[0026] like Figure 3 As shown, Figure 3 The flowchart of the TV viewing distance monitoring and reminder system provided in this embodiment includes the following steps: Step S301: Electromagnetic wave radar and infrared thermal imager continuously scan the monitoring area; Step S302: The sensor fusion and target recognition unit identifies all living organisms within the monitoring area; Step S303: For each living being, extract its body shape features and compare them with a preset child body shape feature database to determine whether the detection target is a child; if yes, proceed to step S304; if no, proceed to step S301. Step S304: For the identified child, obtain the first distance between the child and the television in real time; Step S305: Determine whether the first distance is less than a preset safety threshold and the duration exceeds a first preset time; if yes, proceed to step S306; if no, proceed to step S301. Step S306: Trigger a pop-up alarm; Step S307: Determine whether the first distance is less than a preset safety threshold and the duration exceeds a second preset time; if yes, proceed to step S308; if no, proceed to step S310. Step S308: Reduce screen brightness and audio volume, determine whether the first distance is less than a preset safety threshold and the duration exceeds a third preset time; if yes, proceed to step S309, otherwise proceed to step S310. Step S309: Control the TV to pause playback and determine whether the first distance is less than the preset safety threshold; if yes, proceed to step S309; ​​if no, proceed to step S310. Step S310: Delete the first alarm prompt and proceed to step S301.

[0027] Based on the same disclosed concept, this disclosure also provides a method for monitoring and reminding television viewing distance. Since the principle of solving the problem by these methods is similar to that of the aforementioned television viewing distance monitoring and reminder system, the implementation of this method can refer to the implementation of the aforementioned system, and the repeated parts will not be described again.

[0028] This disclosure provides a method for monitoring and reminding viewers of their television viewing distance, such as... Figure 4 As shown, it includes: S401. Collect perception data of the target detected in the area in front of the television; S402. Collect an infrared thermal image of the area in front of the television; S403. Based on the sensing data and the infrared thermal image, determine whether the detected target is a child; S404. If the detection target is a child, determine whether the first distance between the detection target and the television, as represented by the perception data, is less than a preset safety threshold; and if the first distance is less than the preset safety threshold, generate a reminder instruction. S405. Generate a first alarm prompt according to the reminder instruction.

[0029] In another embodiment of this disclosure, the sensing data includes at least one of the following: a first distance between the detection target and the television, the speed of the detection target relative to the television, and the angle of the detection target relative to the television; The infrared thermal image includes: the outline of the heat source.

[0030] In another embodiment of this disclosure, determining whether the detection target is a child based on the sensing data and the infrared thermal image includes: Based on the sensing data and the heat source outline, spatial matching is performed between the detected target and the heat source outline to confirm whether the detected target is a living organism. If the detection target is a living organism, the sensing data is fused with the heat source outline to obtain the fused heat source outline. Based on the fused heat source profile, it is determined whether the detection target is a child.

[0031] In another embodiment of this disclosure, determining whether the detection target is a child based on the fused heat source profile includes: Based on the body shape characteristics of the fused heat source contour, it is compared with a preset child body shape feature database to determine whether the detection target is a child; wherein, the body shape characteristics of the fused heat source contour include at least one of the following: the height of the fused heat source contour, the width of the fused heat source contour, and the area of ​​the fused heat source contour.

[0032] In another embodiment of this disclosure, the preset safety threshold is set according to a preset multiple of the diagonal size of the television screen.

[0033] In another embodiment of this disclosure, the method further includes: recording the duration during which the first distance is less than the preset safety threshold when the first distance is less than the preset safety threshold.

[0034] In another embodiment of this disclosure, generating a first alarm notification according to the reminder instruction includes: Based on the reminder instruction and the duration, a pop-up alarm is triggered at a first preset time; the screen brightness and audio volume are reduced at a second preset time; and the TV playback is paused at a third preset time. Wherein, the first preset time is less than the second preset time; the second preset time is less than the third preset time.

[0035] Through the above description of the embodiments, those skilled in the art can clearly understand that the embodiments of this disclosure can be implemented in hardware or by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solutions of the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, mobile hard drive, etc.) and includes several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this disclosure.

[0036] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes in the drawings are not necessarily essential for implementing this disclosure.

[0037] Those skilled in the art will understand that the modules in the apparatus of the embodiments can be distributed in the apparatus of the embodiments as described in the embodiments, or they can be located in one or more devices different from this embodiment with corresponding changes. The modules of the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0038] The sequence numbers of the embodiments disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0039] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A television viewing distance monitoring and reminder system, characterized in that, include: Multimodal perception module, sensor fusion and target recognition unit, intelligent decision-making module and human-computer interaction module; The multimodal sensing module includes: an electromagnetic wave radar module and an infrared thermal imaging module; The electromagnetic wave radar module is used to collect sensing data of the target detection area in front of the television. The infrared thermal imaging module is used to acquire infrared thermal images of the area in front of the television. The sensor fusion and target recognition unit is used to determine whether the detected target is a child based on the sensing data and the infrared thermal image; The intelligent decision-making module is used to determine whether the first distance between the detected target and the television, as represented by the sensing data, is less than a preset safety threshold when the detected target is a child; and to generate a reminder instruction if the first distance is less than the preset safety threshold. The human-computer interaction module is used to generate a first alarm prompt based on the reminder instruction.

2. The system as described in claim 1, characterized in that, The sensing data includes at least one of the following: a first distance between the detected target and the television, the speed of the detected target relative to the television, and the angle of the detected target relative to the television; The infrared thermal image includes: the outline of the heat source.

3. The system as described in claim 2, characterized in that, The sensor fusion and target recognition unit is used to perform spatial matching between the detected target and the heat source contour based on the sensing data and the heat source contour, and to confirm whether the detected target is a living organism. If the detection target is a living organism, the sensing data is fused with the heat source outline to obtain the fused heat source outline. Based on the fused heat source profile, it is determined whether the detection target is a child.

4. The system as described in claim 3, characterized in that, The sensor fusion and target recognition unit is used to compare the body shape features of the fused heat source contour with a preset child body shape feature database to determine whether the detection target is a child; wherein, the body shape features of the fused heat source contour include at least one of the following: the height of the fused heat source contour, the width of the fused heat source contour, and the area of ​​the fused heat source contour.

5. The system as described in claim 1, characterized in that, The preset safety threshold is set according to a preset multiple of the diagonal size of the TV screen.

6. The system as described in claim 1, characterized in that, The intelligent decision-making module is also used to record the duration during which the first distance is less than the preset safety threshold when the first distance is less than the preset safety threshold.

7. The system as described in claim 6, characterized in that, The human-computer interaction module includes: a screen display unit and a screen / audio control unit; The screen display unit is used to generate a pop-up alarm at a first preset time according to the reminder instruction and the duration; The screen / audio control unit is used to reduce screen brightness and audio volume at a second preset time according to the reminder instruction and the duration; and to control the TV to pause playback at a third preset time. Wherein, the first preset time is less than the second preset time; the second preset time is less than the third preset time.

8. A method for monitoring and reminding viewers of television viewing distance, characterized in that, include: Collect sensor data on targets detected in the area in front of the television; Collect infrared thermal images of the area in front of the television; Based on the perceived data and the infrared thermal image, determine whether the detected target is a child; If the target being detected is a child, determine whether the first distance between the target and the television, as represented by the sensing data, is less than a preset safety threshold; and if the first distance is less than the preset safety threshold, generate a reminder instruction. Based on the notification instruction, a first alarm notification is generated.

9. The method as described in claim 8, characterized in that, The sensing data includes at least one of the following: a first distance between the detected target and the television, the speed of the detected target relative to the television, and the angle of the detected target relative to the television; The infrared thermal image includes: the outline of the heat source.

10. The method as described in claim 9, characterized in that, The step of determining whether the detected target is a child based on the sensed data and the infrared thermal image includes: Based on the sensing data and the heat source outline, spatial matching is performed between the detected target and the heat source outline to confirm whether the detected target is a living organism. If the detection target is a living organism, the sensing data is fused with the heat source outline to obtain the fused heat source outline. Based on the fused heat source profile, it is determined whether the detection target is a child.

Images