Intelligent bracelet

Abstract

The utility model discloses an intelligent bracelet, which relates to the field of blind guiding, and is characterized in that an environment detection module is integrated in the intelligent bracelet, so that blind sidewalks and obstacles in a preset range can be identified; a main control chip integrated in the intelligent bracelet can control a prompt module to give out corresponding prompts according to the blind sidewalk and the obstacles recognized by an environment monitoring module, so that a wearer can walk on the blind sidewalk according to the prompts and safely avoid the obstacles, and in addition, compared with a blind guiding stick, the intelligent bracelet provided by the scheme is lighter, easier to carry and more convenient to use. And secondly, compared with the purchasing of a seeing-eye dog, the use of the intelligent bracelet is lower in cost, easy to obtain, simple to maintain, less in use limitation, free from the influence of factors such as territory and environment, and richer in functionality. And the braille button is arranged at the power switch of the intelligent bracelet, so that the intelligent bracelet is more convenient for the old and visually impaired people to use.

Description

Technical Field

[0001] This utility model relates to the field of guideways for the visually impaired, and in particular to a smart bracelet. Background Technology

[0002] Existing data indicates that my country has a large number of visually impaired individuals, the majority of whom are elderly. The main causes of blindness in the elderly include cataracts, retinal and uveal diseases, and corneal diseases. These visually impaired individuals face numerous challenges in daily life, especially in terms of mobility. The lack of vision makes it difficult for them to walk independently and safely, significantly limiting their range of activities and quality of life. Traffic lights are typically visual signals, which are difficult for visually impaired individuals to recognize. Although some cities have installed audible warning devices, these devices have limited coverage and are ineffective in noisy environments. Visually impaired individuals also have difficulty perceiving changes in their surroundings when traveling, such as uneven road surfaces, the location of obstacles, and the movement of pedestrians and vehicles, making them prone to collisions, falls, and other accidents.

[0003] The most common guide tool for the blind is the guide cane. However, guide canes are not convenient for some elderly people to tap the ground to explore, and they are generally too bulky and difficult to carry. Secondly, the most widely recognized guide dogs are very scarce in the market. When providing services to visually impaired people, they can only avoid obstacles by using guide canes or guide dogs. Utility Model Content

[0004] The purpose of this invention is to provide a smart bracelet. This solution can identify tactile paving and obstacles within a preset range, enabling the wearer to walk on the tactile paving and safely avoid obstacles according to the prompts. Furthermore, the smart bracelet provided by this solution is lighter and easier to carry than a guide cane, making it easier for elderly visually impaired individuals to use. Secondly, using a smart bracelet is less expensive than purchasing a guide dog, is easier to obtain, simpler to maintain, has fewer usage restrictions, is not affected by geographical or environmental factors, and offers richer functionality. Moreover, the smart bracelet has a Braille button on its power switch, further facilitating use by elderly visually impaired individuals.

[0005] To solve the above technical problems, this utility model provides a smart bracelet, including: a bracelet body and a bracelet strap connected to the bracelet body. The bracelet body includes: a shell, an environmental detection module disposed inside the shell, a main control chip, a prompt module, and a power switch disposed on the surface of the shell. The power switch is provided with a Braille touch button.

[0006] The environmental detection module, whose output is connected to the main control chip, is used to identify blind paths and obstacles within a preset range of the smart bracelet.

[0007] The prompting module, whose control terminal is connected to the main control chip, is used to provide a first prompt and a second prompt to the tactile paving and the obstacle respectively based on the control of the main control chip.

[0008] The power switch, which is connected to the main control chip, is used to control the smart bracelet to turn on and off.

[0009] Optionally, the environmental detection module includes:

[0010] The laser detection and ranging device installed inside the housing is used to emit laser pulses and generate 3D point cloud data based on the reflection signals corresponding to the laser pulses, and to identify the texture of the tactile paving surface, the position, height and outline of the obstacles and pedestrians.

[0011] Optionally, the environmental detection module includes: an infrared detection device disposed inside the housing and an ultrasonic sensor disposed inside the housing;

[0012] The infrared detection device is used to emit infrared light of a preset wavelength and identify the texture of the tactile paving surface, the reflective properties of the tactile paving, and the material of the obstacle based on the reflected infrared light.

[0013] The ultrasonic sensor is used to emit ultrasonic waves and determine the first direction of the tactile paving, the second direction of the obstacle, the first distance between the smart bracelet and the tactile paving, the second distance between the smart bracelet and the obstacle, and the edge position of the tactile paving based on the reflected waves corresponding to the ultrasonic waves.

[0014] Optionally, the environmental detection module further includes:

[0015] A vision sensor installed inside the housing is used to acquire visual information about the traffic lights and to identify the color, arrow shape, and countdown information of the traffic lights based on the visual information.

[0016] Optionally, the environmental detection module further includes:

[0017] The communication module, located inside the housing, is used to receive real-time status signals of traffic lights in the city where the smart bracelet is located.

[0018] Optional, also includes:

[0019] A heart rate detection device installed inside the housing is used to collect the heart rate data of the wearer of the smart bracelet in real time;

[0020] A display screen disposed on the surface of the housing is used to display the heart rate data;

[0021] Accordingly, the main control chip is also used to: generate and store heart rate data reports based on the wearer's heart rate data throughout the day.

[0022] Optionally, it also includes: a positioning device and an IMU disposed inside the housing, a call switch and a cancel switch disposed on the surface of the housing, wherein the call switch is provided with a Braille touch button and the cancel switch is provided with a Braille touch button;

[0023] The positioning device is connected to the main control chip and is used to locate the position of the smart bracelet.

[0024] The IMU, which is connected to the main control chip, is used to measure the movement path and distance of the smart bracelet from its starting position to its current position.

[0025] The call switch, which is connected to the main control chip, is used to send a help message and / or a help call to an emergency contact through the main control chip after being pressed.

[0026] The cancel switch, which is connected to the main control chip, is used to cancel sending the help message and / or the help call to the emergency contact when pressed within a preset time after the call button is pressed.

[0027] Optionally, it may also include: an accelerometer, a gyroscope, a geomagnetic sensor disposed inside the housing, and a pressure sensor disposed on the lower surface of the housing;

[0028] The accelerometer, which is connected to the main control chip, is used to measure the acceleration changes of the smart bracelet in three axes.

[0029] The gyroscope sensor, which is connected to the main control chip, is used to measure the rotation angle, direction change, and angular velocity of the smart bracelet.

[0030] The geomagnetic sensor, which is connected to the main control chip, is used to collect the direction and intensity of the magnetic field in the environment where the smart bracelet is located;

[0031] The pressure sensor, which is connected to the main control chip, is used to detect pressure changes on the wearing area of ​​the smart bracelet wearer.

[0032] Optionally, the prompting module includes: a sound prompting module and a vibration prompting module disposed inside the housing; the smart bracelet further includes: a volume control switch disposed on the surface of the housing, wherein the volume control switch is provided with a Braille touch button;

[0033] The sound prompt module is connected to the main control chip and is used to provide a first sound prompt and a second sound prompt to the blind path and the obstacle respectively based on the control of the main control chip.

[0034] The vibration alert module is connected to the main control chip and is used to provide a first vibration alert and a second vibration alert to the tactile paving and the obstacle respectively based on the control of the main control chip.

[0035] The volume control switch is connected to the main control chip and is used to adjust the volume of the sound prompt module by means of the main control chip when pressed.

[0036] Optionally, it may also include: a sound receiving device disposed on the surface of the housing, and a voice recognition module disposed inside the housing;

[0037] The sound receiving device is connected to the input terminal of the speech recognition module and is used to convert the received speech signal into a corresponding electrical signal.

[0038] The voice recognition module, whose output is connected to the main control chip, is used to convert the electrical signal into a corresponding instruction and transmit it to the main control chip.

[0039] The purpose of this invention is to provide a smart bracelet. This solution integrates an environmental detection module within the smart bracelet, which can identify tactile paving and obstacles within a preset range. The main control chip integrated within the smart bracelet will control the prompting module to issue corresponding prompts based on the tactile paving and obstacle detection detected by the environmental monitoring module, enabling the wearer to walk on the tactile paving and safely avoid obstacles. Furthermore, the smart bracelet provided by this solution is lighter and easier to carry than a guide cane, making it easier for elderly visually impaired individuals to use. Secondly, using a smart bracelet is less expensive than purchasing a guide dog, easier to obtain, simpler to maintain, and has fewer usage restrictions, unaffected by geographical or environmental factors, and offers richer functionality. Moreover, the smart bracelet has a Braille button on its power switch, further facilitating use by elderly visually impaired individuals. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0041] Figure 1This utility model provides a structural schematic diagram of a smart bracelet;

[0042] Figure 2 This is a schematic diagram of another smart bracelet provided by the present invention;

[0043] Figure 3 A front view of a smart bracelet provided by this utility model;

[0044] Figure 4 A side view of a smart bracelet provided by this utility model;

[0045] Figure 5 The back view of a smart bracelet provided by this utility model. Detailed Implementation

[0046] The core of this invention is to provide a smart bracelet. This solution integrates an environmental detection module within the smart bracelet, which can identify tactile paving and obstacles within a preset range. A prompting module enables the wearer to follow the prompts on the tactile paving and safely avoid obstacles. Furthermore, the smart bracelet provided by this solution is lighter and easier to carry than a guide cane, making it easier for elderly visually impaired individuals to use. Secondly, using a smart bracelet is less expensive than purchasing a guide dog, is easier to obtain, simpler to maintain, has fewer usage restrictions, is not affected by geographical or environmental factors, and offers richer functionality. Moreover, the smart bracelet has a Braille button on its power switch, further facilitating use by elderly visually impaired individuals.

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a smart bracelet provided by the present invention. The smart bracelet includes: a bracelet body and a bracelet strap connected to the bracelet body. The bracelet body includes: a housing 1, an environmental detection module 2 disposed inside the housing 1, a main control chip 3, a prompt module 4, and a power switch 5 disposed on the surface of the housing 1. The power switch 5 is provided with a Braille touch button.

[0049] Environmental detection module 2, the output of which is connected to the main control chip 3, is used to identify blind paths and obstacles within a preset range of the smart bracelet;

[0050] The prompt module 4 is connected to the main control chip 3 and is used to provide first and second prompts for the blind path and obstacles based on the control of the main control chip 3.

[0051] Power switch 5 is connected to main control chip 3 and is used to control the smart bracelet to turn on and off.

[0052] In this invention, considering that the most common guide tool for the visually impaired is the guide cane, which is inconvenient for some elderly people to tap the ground for exploration, and is generally too bulky and difficult to carry. Furthermore, the most widely recognized guide dog is scarce in the market. Since visually impaired people can only avoid obstacles when using guide canes or guide dogs on tactile paving, this solution provides a smart bracelet as a new guide tool for elderly visually impaired people. Compared to guide canes, the smart bracelet is lighter and easier to carry, facilitating its use by elderly visually impaired people. Moreover, using a smart bracelet is lower in cost than purchasing a guide dog, easier to obtain, simpler to maintain, and has fewer usage restrictions, unaffected by geographical or environmental factors, and offers richer functionality. In addition, the smart bracelet has five Braille buttons on its power switch, further facilitating its use by elderly visually impaired people. The smart bracelet's casing 1 also integrates an environmental detection module 2 and a prompt module 4. The environmental detection module 2 can identify tactile paving and obstacles within a preset range, and the prompt module 4 enables the wearer to walk on the tactile paving according to the prompts and safely avoid obstacles, making it particularly suitable for daily use by elderly visually impaired people.

[0053] It should be noted that the smart bracelet provided in this solution has the following features: multimodal information interaction, capable of providing information to visually impaired individuals through Braille, voice, and other methods to meet the needs of different scenarios; environmental perception and early warning, capable of sensing the surrounding environment in real time, detecting obstacles, traffic signals, etc., and alerting visually impaired individuals through vibration or sound; emergency assistance function, which can automatically send help and location information to preset emergency contacts in case of emergency, ensuring the safety of visually impaired individuals. In addition, the smart bracelet can also provide assistance to visually impaired individuals in case of accidents, provide real-time updates on tactile paving, and facilitate communication with guardians' mobile phones. It is particularly convenient for visually impaired individuals to use themselves, with GPS positioning, infrared sensing, and a heart rate sensor to reduce the risk of accidents and road obstacles; Braille is embedded in the bracelet for better user access; it has a Bluetooth device for connecting to Bluetooth headsets and various Bluetooth devices; and the smart bracelet strap is detachable and replaceable for added convenience.

[0054] It should also be noted that there are relatively few similar wristbands on the market, and while similar items may offer similar functions, they often lack the ability to quickly address issues such as road conditions or unexpected dangers encountered by visually impaired individuals. Furthermore, guide canes have a limited detection range, failing to provide detailed road information, and prolonged use can cause fatigue for visually impaired individuals, potentially posing a safety hazard under certain circumstances. The smart wristband provided in this application effectively avoids these problems associated with traditional guide tools. Compared to traditional guide tools, smart wristbands are lighter and more portable, making them easier for visually impaired individuals to carry and use. They are not affected by environmental factors, reducing dependence on others and improving the independence, quality of life, and personal safety of visually impaired individuals. In summary, the advantages of smart wristbands are that they provide timely and effective real-time environmental information and monitoring, improving travel safety and convenience, while also helping visually impaired individuals better integrate into society and improve their quality of life.

[0055] It should also be noted that the overall structure of the smart bracelet is as follows: Figure 2 As shown, the smart bracelet includes Bluetooth connectivity (a type of communication module), an ultrasonic sensor, software development technology, a heart rate sensor with automatic alarm, GPS (Global Positioning System) positioning, and an infrared device. The software and GPS components connect to the visually impaired person's mobile phone to receive their real-time location information. The infrared device and ultrasonic sensor, combined with the information about road conditions for the visually impaired person, are displayed in real-time via a prompt module 4. The prompt module 4 will report nearby obstacles to the visually impaired person in real time. For example, when an obstacle is detected within 2 meters, it will automatically announce, using "forward," "backward," "left," and "right" directions, "* Obstacle in the direction of *, please continue walking to the obstacle within * meters."

[0056] It should also be noted that the smart bracelet's casing 1 also has a charging port. The casing 1 can also house a removable or non-removable battery. When the battery is low, for example, below 20%, the notification module 4 will automatically announce, "Low battery, please charge promptly." The notification module 4 will automatically stop announcing when the battery is fully charged. A front view of the smart bracelet is shown below. Figure 3 As shown, a display screen is located at the top to show heart rate data. The side view of the smart bracelet is shown below. Figure 4 As shown in the image, the back of the smart bracelet is as follows. Figure 5 As shown.

[0057] This embodiment provides a smart bracelet. The smart bracelet integrates an environmental detection module 2, which can identify tactile paving and obstacles within a preset range. The main control chip 3 integrated within the smart bracelet controls the prompting module 4 to issue corresponding prompts based on the tactile paving and obstacle detection detected by the environmental monitoring module, enabling the wearer to walk on the tactile paving and safely avoid obstacles. Furthermore, the smart bracelet provided by this solution is lighter and easier to carry than a guide cane, making it easier for elderly visually impaired individuals to use. Secondly, using a smart bracelet is less expensive than purchasing a guide dog, easier to obtain, simpler to maintain, and has fewer usage restrictions, unaffected by geographical or environmental factors, and offers richer functionality. Moreover, the smart bracelet has a Braille button at its power switch 5, further facilitating use by elderly visually impaired individuals.

[0058] Based on the above embodiments:

[0059] As an optional embodiment, the environmental detection module 2 includes:

[0060] The laser detection and ranging device installed inside the housing 1 is used to emit laser pulses and generate 3D point cloud data based on the reflection signals corresponding to the laser pulses, and to identify the texture, obstacles, and the position, height, and outline of pedestrians on the surface of the tactile paving.

[0061] In this invention, considering that the detection effect of the existing environmental detection module 2 is easily affected by tall obstacles, a laser detection and ranging device is set inside the shell 1 of the smart bracelet. The laser detection and ranging device is used for actual environmental detection. In addition, because the laser detection and ranging device emits a laser beam to the surrounding environment, receives the reflected signal, calculates the time difference, generates a high-density point cloud (3D point cloud data), and constructs a 3D model of the scene, the 3D point cloud data contains the spatial coordinates (X / Y / Z) and reflection intensity information of each point. The 3D model of the scene is composed of the three-dimensional coordinates of objects, which can identify the shape and position of objects such as roads, buildings, vehicles, and pedestrians. Therefore, it can accurately identify the shape and position of objects such as blind paths, obstacles, and human bodies, thereby improving the accuracy and safety of the solution.

[0062] It should be noted that in practical applications, laser detection and ranging devices can be LiDAR (Light Detection and Ranging) or other laser measurement devices. LiDAR has the advantage of high-precision ranging, actively emitting lasers and sensing without ambient light (superior to cameras). Typical LiDAR ranging errors are generally in the centimeter range, and the ranging range is relatively wide. LiDAR can also detect the speed and trajectory of moving objects (vehicles, pedestrians) through continuous scanning. By combining multi-frame point cloud data, it can predict the target's movement trend (such as lane changes, sudden braking), thereby ensuring the safety of visually impaired people. In addition, LiDAR generally uses near-infrared light (such as 905nm or 1550nm lasers) to reduce sunlight interference, and through multi-echo processing, it can penetrate some obstructions (such as leaves, rain, and fog) to distinguish foreground and background targets. Furthermore, LiDAR can identify lane lines, curbs, obstacles, and traffic signs, locate the physical positions of traffic lights and traffic signal poles (which need to be used in conjunction with cameras to determine their status), generate digital elevation models (DEMs) and 3D city maps, and monitor the deformation or damage of bridges and railway tracks, further ensuring the safety of visually impaired people while walking.

[0063] As an optional embodiment, the environmental detection module 2 includes: an infrared detection device disposed inside the housing 1 and an ultrasonic sensor disposed inside the housing 1;

[0064] An infrared detection device is used to emit infrared light of a preset wavelength and identify the texture of the tactile paving surface, the reflective properties of the tactile paving, and the material of obstacles based on the reflected infrared light.

[0065] An ultrasonic sensor is used to emit ultrasonic waves and determine the first direction of the tactile paving, the second direction of the obstacle, the first distance between the smart bracelet and the tactile paving, the second distance between the smart bracelet and the obstacle, and the edge position of the tactile paving based on the reflected waves of the ultrasonic waves.

[0066] In this invention, considering that visually impaired individuals may encounter severe weather conditions such as heavy rain and snow while walking, this solution selects an infrared detection device and an ultrasonic sensor as the environmental detection module 2 to improve the weather adaptability of the smart bracelet, i.e., to ensure stable operation around the clock. The ultrasonic sensor has the advantage of strong penetration and can work in all weather conditions, greatly improving the weather adaptability of the smart bracelet and increasing its effective detection distance. In addition, the infrared sensor identifies the texture and reflective properties of the tactile paving and the material of obstacles in the environment by emitting infrared light, which can assist the ultrasonic sensor in identification in low-light environments. The ultrasonic sensor identifies the first direction of the tactile paving, the second direction of the obstacle, the first distance between the smart bracelet and the tactile paving, the second distance between the smart bracelet and the obstacle, and the edge position of the tactile paving by emitting ultrasonic waves, so as to accurately identify the tactile paving and obstacles in the environment and help visually impaired individuals walk safely.

[0067] It should be noted that in practical applications, ultrasonic sensors can be replaced with millimeter-wave radar or other sensor devices.

[0068] As an optional embodiment, the environmental detection module 2 further includes:

[0069] The vision sensor installed inside the housing 1 is used to acquire visual information of the traffic lights and identify the color, arrow shape and countdown information of the traffic lights based on the visual information.

[0070] In this invention, considering that visually impaired individuals sometimes need to cross crosswalks while traveling, if the smart bracelet can only identify tactile paving and obstacles, it cannot guarantee the safe passage of visually impaired individuals across crosswalks. Therefore, this solution also adds a visual sensor to acquire visual information of traffic lights and identify the color, arrow shape, and countdown information of the traffic lights based on the visual information, thus accurately identifying the status of traffic lights. For example, traffic lights include traffic lights and pedestrian crossing traffic lights. With the addition of the visual sensor, the smart bracelet can simultaneously identify both types of traffic lights, preventing injury to visually impaired individuals crossing the crosswalk from vehicles suddenly turning when both the traffic light and the pedestrian crossing traffic light are green. This greatly improves the safety of the solution.

[0071] It should be noted that in practical applications, considering that visually impaired individuals may walk on both well-lit and poorly lit roads, this solution can also add a photosensitive element inside the housing 1 and an illumination lamp (e.g., photoresistor, photodiode, etc.) on the surface of the housing 1. This allows for real-time acquisition of ambient brightness values, and the controller determines whether the ambient light is sufficient based on these values. If insufficient, the illumination lamp is activated. Alternatively, only the illumination lamp can be added, but this requires dynamic analysis of the acquired environmental images using a visual sensor and image processing algorithms. Specifically, the average brightness of multiple environmental images acquired by the visual sensor is used to determine whether the ambient light is sufficient; if insufficient, the illumination lamp is activated. This method ensures that the illumination lamp is activated promptly when a visually impaired individual is walking on poorly lit roads, allowing other vehicles or pedestrians nearby to notice and avoid them, further ensuring the safety of the visually impaired individual.

[0072] As an optional embodiment, the environmental detection module 2 further includes:

[0073] The communication module, located inside the housing 1, is used to receive real-time status signals from traffic lights in the city where the smart bracelet is located.

[0074] In this invention, considering that many existing environmental recognition devices are easily affected by factors such as weather and obstruction, resulting in low reliability, a communication module is added to this solution. Through the communication module, the real-time status signals of traffic lights in the city where the smart bracelet is located can be received. That is, the communication module can connect to the real-time traffic network of the current city, thereby obtaining the real-time status of traffic lights, such as traffic light countdown, priority passage, and other information. Combined with laser detection and ranging devices and / or infrared detection devices and ultrasonic sensors for the identification of tactile paving and obstacles, the safety of visually impaired people can be guaranteed in all aspects while walking.

[0075] It should be noted that in practical applications, the communication module can be a DSRC (Dedicated Short-Range Communications) module, a V2X (Vehicle-to-Everything) module, or a Bluetooth module, etc., which serve as a signal receiving module. This application does not impose any particular limitation on this. When the communication module is a Bluetooth module, the smart bracelet can also connect to various Bluetooth devices such as Bluetooth headsets. Visually impaired individuals can wear Bluetooth headsets to receive audio prompts, reducing environmental interference with the audio prompts. It should also be noted that while V2X modules are generally used for vehicle communication, they can also be used within smart bracelets.

[0076] As an optional embodiment, it also includes:

[0077] The heart rate detection device installed inside the housing 1 is used to collect the heart rate data of the wearer of the smart bracelet in real time;

[0078] The display screen mounted on the surface of housing 1 is used to display heart rate data;

[0079] Correspondingly, the main control chip 3 is also used to generate and store heart rate data reports based on the wearer's heart rate data throughout the day.

[0080] In this invention, considering that the heart rate data of visually impaired individuals is related to their health status, and that if a visually impaired individual experiences an abnormal health condition after going out, especially in a remote location with no pedestrians around, this situation could threaten their life, this solution includes a heart rate detection device. This device collects the heart rate data of the smart bracelet wearer in real time. Furthermore, considering that the heart rate data of visually impaired individuals needs to be displayed to medical personnel so that they can accurately determine the health status of the visually impaired individual based on the changes in heart rate data throughout the day, this solution also includes a display screen to show the heart rate data for easy viewing by medical personnel. In addition, the main control chip 3 also needs to generate and store a heart rate data report based on the wearer's heart rate data throughout the day, allowing medical personnel to promptly detect whether the wearer is ill based on long-term heart rate data reports, thus improving the reliability of the solution.

[0081] It should be noted that in practical applications, when the heart rate data obtained by the heart rate sensor is between 60 and 100, it will automatically announce "Do you want to confirm dialing 120? If not, please press the 'Cancel' button." If a visually impaired person does not press the button within 2 minutes, it will automatically dial 120 (and announce a "piercing alarm" and call the "emergency contact" with the message "The wristband user is automatically alarming, please check").

[0082] As an optional embodiment, it also includes: a positioning device and an IMU disposed inside the housing 1, a call switch and a cancel switch disposed on the surface of the housing 1, wherein the call switch is provided with a Braille touch button and the cancel switch is provided with a Braille touch button;

[0083] The positioning device is connected to the main control chip 3 and is used to locate the position of the smart bracelet.

[0084] The IMU is connected to the main control chip 3 and is used to measure the movement path and distance of the smart bracelet from the starting position to the current position.

[0085] The call switch is connected to the main control chip 3 and is used to send a help message and / or help call to the emergency contact through the main control chip 3 when pressed.

[0086] The cancel switch is connected to the main control chip 3 and is used to cancel sending a help message and / or call to the emergency contact within a preset time after the call button is pressed.

[0087] In this invention, considering that visually impaired individuals often lack sufficient self-care abilities after going out, such as when walking to remote locations with few pedestrians, they may fall and be unable to be taken to the hospital in time. Therefore, this solution adds a positioning device, a call switch, and a cancel switch. The smart bracelet can use the positioning device to locate the current position of the visually impaired individual in real time and send the location information to emergency contacts via the main control chip 3. This allows emergency contacts to monitor the visually impaired individual's walking status in real time. For example, if the visually impaired individual does not move for a preset time, the emergency contacts can locate the individual based on the location information, or the visually impaired individual can actively press the call switch to send a request for help and / or make a call to the emergency contacts. It can even be combined with the communication module to send a request for help and / or make a call to nearby hospitals and other institutions, enabling the visually impaired individual to receive treatment as soon as possible. In addition, considering that the positioning device may have a weak signal in some areas, this solution adds an IMU (Inertial Measurement Unit). The Inertial Measurement Unit (IMU) compensates for the shortcomings of positioning devices because it consists of three single-axis accelerometers and three single-axis gyroscopes. The accelerometers detect the wearer's acceleration signals along three independent axes of the carrier coordinate system, while the gyroscopes detect the carrier's angular velocity signals relative to the navigation coordinate system. After processing these signals, the wearer's attitude can be calculated. Furthermore, the IMU provides relative positioning information; its function is to measure the wearer's path relative to the starting point. Therefore, it does not provide the wearer's exact location. Thus, it is often used in conjunction with positioning devices. In areas where positioning device signals are weak, the IMU can function, allowing emergency contacts to continue to obtain the wearer's absolute location information. In addition, this solution includes a Braille touch button at the call switch for easy use by visually impaired individuals. Considering the possibility of accidental call switch activation, a cancel switch is also included. Pressing the call button within a preset time after it is pressed cancels sending a distress message and / or making an emergency call to emergency contacts, improving the reliability and safety of the solution.

[0088] It should be noted that in practical applications, the positioning device can be GPS or other positioning devices.

[0089] As an optional embodiment, it also includes: an acceleration sensor, a gyroscope sensor, a geomagnetic sensor disposed inside the housing 1, and a pressure sensor disposed on the lower surface of the housing 1;

[0090] An accelerometer, connected to the main control chip 3, is used to measure the acceleration changes of the smart bracelet in three axes.

[0091] The gyroscope sensor is connected to the main control chip 3 and is used to measure the rotation angle, direction change and angular velocity of the smart bracelet.

[0092] The geomagnetic sensor is connected to the main control chip 3 and is used to collect the direction and intensity of the magnetic field in the environment where the smart bracelet is located.

[0093] The pressure sensor is connected to the main control chip 3 and is used to detect pressure changes on the wearing part of the smart bracelet.

[0094] In this invention, considering that the posture of a visually impaired person cannot be determined solely by viewing positioning information, this solution adds an accelerometer, a gyroscope, a geomagnetic sensor, and a pressure sensor. The accelerometer is one of the core components for monitoring the wearer's posture. It measures the acceleration changes of the bracelet along three axes (usually x, y, and z), and analyzes these acceleration changes to obtain the wearer's motion state information, such as walking, running, jumping, or remaining stationary. For example, when the user walks, the accelerometer detects regular acceleration changes; while when stationary, the acceleration value is relatively stable. The gyroscope sensor is mainly used to measure the angular velocity of an object. In a smart bracelet, the gyroscope can monitor the bracelet's rotation angle and direction changes in real time, which is very helpful for accurately determining the wearer's posture. For example, when the wearer's arm rotates or changes its posture, the gyroscope can quickly sense these changes and transmit the relevant data to the bracelet's main control chip 3 for processing. The geomagnetic sensor can sense the direction and strength of the magnetic field in the environment where the smart bracelet is located, providing directional information to the smart bracelet and assisting in determining the wearer's posture. By combining data from accelerometer and gyroscope sensors, the geomagnetic sensor can more accurately determine the wearer's orientation in space, such as distinguishing between different postures like upright, upside down, or tilted. A pressure sensor detects changes in pressure applied while the wearer is wearing the bracelet. Analyzing this pressure data helps determine the wearer's arm flexion and posture. For example, when the wearer bends their arm, the pressure between the bracelet and the skin changes; the pressure sensor can capture these subtle changes and use them as one of the criteria for posture determination. This solution comprehensively determines the wearer's posture using these four sensors, improving the overall accuracy of the solution.

[0095] It should be noted that in practical applications, the main control chip 3 will send automatic alarm information to emergency contacts or nearby hospitals based on the monitored posture and heart rate data of the wearer. For example, each time an automatic alarm is triggered, the bracelet will display a message to the bound mobile phone saying "The bracelet user is triggering an automatic alarm. Please check."

[0096] As an optional embodiment, the prompting module 4 includes: a sound prompting module 4 and a vibration prompting module 4 disposed inside the housing 1; the smart bracelet also includes: a volume control switch disposed on the surface of the housing 1, and a Braille touch button disposed at the volume control switch;

[0097] The sound prompt module 4 is connected to the main control chip 3 and is used to provide a first sound prompt and a second sound prompt for the blind path and obstacles based on the control of the main control chip 3.

[0098] Vibration alert module 4 is connected to the main control chip 3 and is used to provide a first vibration alert and a second vibration alert for the blind path and obstacles based on the control of the main control chip 3.

[0099] The volume control switch is connected to the main control chip 3 and is used to adjust the volume of the sound prompt module 4 by means of the main control chip 3 when pressed.

[0100] In this invention, considering that the smart bracelet is worn on the wrist of a visually impaired person, in order to improve the prompting effect of the prompting module 4, this solution not only sets up a sound prompting module 4, but also a vibration prompting module 4. Prompting visually impaired persons through both sound and vibration prompts allows them to accurately walk on the tactile paving and avoid obstacles based on their auditory and tactile perception. Furthermore, considering that the sound of the sound prompting module 4 may be loud, this solution also adds a volume adjustment switch to the surface of the smart bracelet's casing 1. The volume of the sound prompting module 4 can be adjusted by pressing the volume adjustment switch. Additionally, this solution also includes a Braille touch button at the volume adjustment switch for ease of use by visually impaired persons.

[0101] As an optional embodiment, it also includes: a sound receiving device disposed on the surface of the housing 1, and a voice recognition module disposed inside the housing 1;

[0102] A radio receiver is connected to the input of a speech recognition module and is used to convert the received speech signal into a corresponding electrical signal.

[0103] The voice recognition module has its output connected to the main control chip 3, and is used to convert electrical signals into corresponding instructions and transmit them to the main control chip 3.

[0104] In this invention, considering that although smart bracelets can realize environmental recognition and prompt functions, they cannot provide real-time navigation to the destination of visually impaired individuals, this solution also adds a microphone and a voice recognition module. The microphone receives the wearer's voice signal and converts it into a corresponding electrical signal. The voice recognition module then converts the electrical signal into a corresponding instruction and transmits it to the main control chip 3. The main control chip 3 then completes the real-time navigation function, making it easier for visually impaired individuals to use.

[0105] It should be noted that the reason for adding a speech recognition module in this solution is to reduce the burden on the main control chip 3 and improve the efficiency and accuracy of speech recognition. For example, a speech recognition chip is selected as the speech recognition module, and some dedicated speech recognition chips based on deep learning algorithms have built-in optimized speech recognition models that can quickly and accurately convert the input speech signal into text or execute corresponding instructions.

[0106] It should be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0107] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A smart bracelet, characterized in that, include: The wristband body and the wristband strap connected to the wristband body, the wristband body includes: a shell, an environmental detection module disposed inside the shell, a main control chip, a prompt module, and a power switch disposed on the surface of the shell, the power switch being provided with a Braille touch button; The environmental detection module, whose output is connected to the main control chip, is used to identify blind paths and obstacles within a preset range of the smart bracelet. The prompting module, whose control terminal is connected to the main control chip, is used to provide a first prompt and a second prompt to the tactile paving and the obstacle respectively based on the control of the main control chip. The power switch, which is connected to the main control chip, is used to control the smart bracelet to turn on and off.

2. The smart bracelet as described in claim 1, characterized in that, The environmental detection module includes: The laser detection and ranging device installed inside the housing is used to emit laser pulses and generate 3D point cloud data based on the reflection signals corresponding to the laser pulses, and to identify the texture of the tactile paving surface, the position, height and outline of the obstacles and pedestrians.

3. The smart bracelet as described in claim 1, characterized in that, The environmental detection module includes: an infrared detection device disposed inside the housing and an ultrasonic sensor disposed inside the housing; The infrared detection device is used to emit infrared light of a preset wavelength and identify the texture of the tactile paving surface, the reflective properties of the tactile paving, and the material of the obstacle based on the reflected infrared light. The ultrasonic sensor is used to emit ultrasonic waves and determine the first direction of the tactile paving, the second direction of the obstacle, the first distance between the smart bracelet and the tactile paving, the second distance between the smart bracelet and the obstacle, and the edge position of the tactile paving based on the reflected waves corresponding to the ultrasonic waves.

4. The smart bracelet as described in claim 2 or 3, characterized in that, The environmental detection module also includes: A vision sensor installed inside the housing is used to acquire visual information about the traffic lights and to identify the color, arrow shape, and countdown information of the traffic lights based on the visual information.

5. The smart bracelet as described in claim 2 or 3, characterized in that, The environmental detection module also includes: The communication module, located inside the housing, is used to receive real-time status signals of traffic lights in the city where the smart bracelet is located.

6. The smart bracelet as described in claim 1, characterized in that, Also includes: A heart rate detection device installed inside the housing is used to collect the heart rate data of the wearer of the smart bracelet in real time; A display screen disposed on the surface of the housing is used to display the heart rate data; Accordingly, the main control chip is also used to: generate and store heart rate data reports based on the wearer's heart rate data throughout the day.

7. The smart bracelet as described in claim 1, characterized in that, Also includes: The positioning device and IMU are installed inside the housing, and the call switch and cancel switch are installed on the surface of the housing. The call switch is equipped with a Braille touch button, and the cancel switch is equipped with a Braille touch button. The positioning device is connected to the main control chip and is used to locate the position of the smart bracelet. The IMU, which is connected to the main control chip, is used to measure the movement path and distance of the smart bracelet from its starting position to its current position. The call switch, which is connected to the main control chip, is used to send a help message and / or a help call to an emergency contact through the main control chip after being pressed. The cancel switch, which is connected to the main control chip, is used to cancel sending the help message and / or the help call to the emergency contact when pressed within a preset time after the call switch is pressed.

8. The smart bracelet as described in claim 7, characterized in that, Also includes: An accelerometer, a gyroscope, a magnetometer, and a pressure sensor are disposed inside the housing; The accelerometer, which is connected to the main control chip, is used to measure the acceleration changes of the smart bracelet in three axes. The gyroscope sensor, which is connected to the main control chip, is used to measure the rotation angle, direction change, and angular velocity of the smart bracelet. The geomagnetic sensor, which is connected to the main control chip, is used to collect the direction and intensity of the magnetic field in the environment where the smart bracelet is located; The pressure sensor, which is connected to the main control chip, is used to detect pressure changes on the wearing area of ​​the smart bracelet.

9. The smart bracelet as described in claim 1, characterized in that, The prompting module includes: a sound prompting module and a vibration prompting module disposed inside the housing; the smart bracelet further includes: a volume control switch disposed on the surface of the housing, wherein the volume control switch is provided with a Braille touch button; The sound prompt module is connected to the main control chip and is used to provide a first sound prompt and a second sound prompt to the blind path and the obstacle respectively based on the control of the main control chip. The vibration alert module is connected to the main control chip and is used to provide a first vibration alert and a second vibration alert to the tactile paving and the obstacle respectively based on the control of the main control chip. The volume control switch is connected to the main control chip and is used to adjust the volume of the sound prompt module by means of the main control chip when pressed.

10. The smart bracelet as described in claim 1, characterized in that, Also includes: A sound receiving device disposed on the surface of the housing and a voice recognition module disposed inside the housing; The radio receiver is connected to the input terminal of the speech recognition module and is used to convert the received speech signal into a corresponding electrical signal. The voice recognition module, whose output is connected to the main control chip, is used to convert the electrical signal into a corresponding instruction and transmit it to the main control chip.

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