Intelligent bracelet for indicating action of visually impaired person

Abstract

The invention discloses an intelligent bracelet for indicating the action of a visually impaired person, and relates to the technical field of blind guiding equipment, and the intelligent bracelet comprises a bracelet body which is used for being in communication connection with the blind guiding equipment, receiving road information data sent by the blind guiding equipment, and sending a corresponding bracelet control instruction according to the road information data; the first wrist strap and the second wrist strap are fixedly connected to the two sides of the bracelet body respectively and used for fixedly connecting the bracelet body to the wrist of a wearer; the plurality of vibration motors are arranged on the inner sides of the bracelet body, the wrist strap I and the wrist strap II and are used for sending out vibration to send a somatosensory action instruction to a wearer; the device is used in cooperation with a blind guiding device, the walking direction is continuously prompted in a vibration mode when the visually-impaired person walks, the situation that direction information prompted through sound is not clear enough is avoided, accurate indication of the action of the visually-impaired person is achieved, meanwhile, different emergency situations are prompted in different vibration modes, and the safety of the visually-impaired person in the action process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of blind guiding devices, and particularly to an intelligent bracelet for visually impaired people to indicate actions. Background Art

[0002] Many institutions at home and abroad have researched and produced relevant electronic blind guiding devices. However, the existing blind guiding devices do not provide obvious guiding effects. If a blind person walks in a relatively noisy environment, even with voice prompts, the guiding information cannot be clearly transmitted to the blind person. Therefore, the accuracy and safety of a blind person's walking cannot be fully guaranteed.

[0003] Patent document CN217827007U discloses a blind person obstacle avoidance bracelet. In this solution, the safety distance value of the induction module can be preset through the intelligent screen. When a blind person approaches an obstacle, if the distance value measured by the induction module is less than the safety distance value, the intelligent screen will activate the player in the installation port, and the player will emit a sound for alarm and prompt, which can effectively prevent the user from hitting the obstacle and ensure the safety of the user. In this solution, only the way of voice prompt is used to assist and prompt the user. When the surrounding environment is relatively noisy or the user fails to listen attentively, the direction information of the voice prompt is not clear enough.

[0004] Patent document CN116392368A discloses a wearable intelligent blind assisting sports shoulder strap and its blind assisting interaction method. In this solution, a target detection algorithm is used in the embedded computer to realize the perception of the scene. When a visually impaired person encounters an obstacle, the vibration warning modules embedded in the two left and right bracelets will feedback warning information in real time in the form of vibration, and the voice feedback module will also output the environmental information to the human ear through audio, which helps the visually impaired person to safely complete the running task alone. However, in this solution, the vibration solution can only prompt the visually impaired person of an emergency situation, and cannot continuously indicate the direction during the movement process. Summary of the Invention

[0005] The purpose of the present invention is to provide an intelligent bracelet for visually impaired people to indicate actions, so as to solve the technical problem of poor accuracy in indicating the action direction of blind guiding devices.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An intelligent bracelet for visually impaired people to indicate actions, which is used in cooperation with a blind guiding device, includes:

[0008] A bracelet body, which is used for communicating and connecting with the blind guiding device, receiving the road information data sent from the blind guiding device, and sending out corresponding bracelet control instructions according to the road information data;

[0009] A first wristband and a second wristband are respectively and fixedly connected to both sides of the bracelet body, and are used to fixedly connect the bracelet body to the wrist of the wearer;

[0010] A plurality of vibration motors are arranged on the inner sides of the bracelet body, the first wristband and the second wristband, and are used to emit vibrations to give the wearer a somatosensory action indication.

[0011] As a further solution of the present invention: the bracelet body is provided with:

[0012] A battery module, which is used to supply electrical energy for the operation of the bracelet;

[0013] A processor module, which receives the road information data sent by the blind guiding device and processes the data to obtain a control instruction that matches the bracelet with the road data;

[0014] A communication module, which is used to connect the processor module and the blind guiding device to realize data transmission between the two.

[0015] As a further solution of the present invention: the bracelet body is also provided with:

[0016] A control circuit, which is used to connect each vibration motor to realize the on-off control of the vibration motor;

[0017] A charging circuit, which is used to charge the battery.

[0018] As a further solution of the present invention: there are eight of the plurality of vibration motors, and the eight vibration motors respectively indicate eight basic directions: front, right front, right, right rear, rear, left rear, left, and left front.

[0019] As a further solution of the present invention: the smart bracelet includes two working modes: direction indication and alarm indication;

[0020] Under the alarm indication, all the vibration motors work simultaneously to give an alarm somatosensory indication;

[0021] In the direction indication, the vibration motor corresponding to the direction works to give the wearer a direction somatosensory indication for walking.

[0022] As a further solution of the present invention: the direction indication includes a basic direction indication and a general direction indication;

[0023] The basic direction indication is that the traveling direction belongs to the eight basic directions represented by the eight vibration motors. Under this direction indication, a single vibration motor is started to realize the direction somatosensory indication;

[0024] The general direction indication is that the traveling direction does not belong to the eight basic directions represented by the eight vibration motors. Under this direction indication, two vibration motors adjacent to the traveling direction are determined, and the two adjacent vibration motors are simultaneously activated to emit vibrations to implement the direction somatosensory instruction.

[0025] As a further solution of the present invention: in the general direction indication, two vibration motors adjacent to the traveling direction start vibrating simultaneously, and interpolation of the indicated direction is achieved according to different continuous vibration durations or intermittent vibration frequencies / duty cycles.

[0026] As a further solution of the present invention: the smart bracelet further includes an intersection indication working mode, and the specific working method is as follows:

[0027] In the intersection indication working mode, the smart bracelet is connected to the electronic map in the blind guide device. When passing through the traffic lights at an intersection, the electronic map obtains the current state of the traffic lights in real time, and the smart bracelet receives the status data of the traffic lights and issues corresponding instructions to the wearer to ensure that the wearer can safely pass through the traffic lights.

[0028] As a further solution of the present invention: the smart bracelet further includes an obstacle avoidance prompt working mode, and the specific working method is as follows:

[0029] It is judged by the cooperation of the visual sensor in the blind guide device and the map. The visual sensor is used to determine the specific type and position of the obstacle, and the map is used to judge the relative position between the obstacle and the user's traveling route to judge whether it will form an obstacle to the user's progress. If there is an obstacle ahead of the travel, the corresponding azimuth and number of vibration motors are activated according to the type of the obstacle to give the wearer an advance obstacle prediction.

[0030] As a further solution of the present invention: it further includes a voice module, and the voice module is used to emit corresponding indication voices to cooperate with the somatosensory indication to give action instructions to the wearer.

[0031] The beneficial effects of the present invention:

[0032] (1) The present invention is used in cooperation with a blind guide device, and provides auxiliary prompts for the actions of visually impaired persons by adopting a combination of sound prompts and vibration prompts. When a visually impaired person is walking, the walking direction is continuously prompted by vibration, avoiding the lack of clarity of the direction information in the sound prompt, realizing accurate indication of the actions of the visually impaired person, and at the same time supporting different vibration methods to prompt different emergency situations to ensure the safety of the visually impaired person during the action process.

[0033] (2) Adopt a combination of voice prompts and tactile prompts. The voice prompts include announcing the current traffic signal status and the remaining time under the current traffic signal status, so that users can accurately obtain traffic signal information and ensure safety when passing through intersections.

[0034] (3) Determine the walking speed of the user based on the user's daily movement data, and combine the traffic status at the intersection and the remaining time of the green light to judge whether the user can pass through the intersection within the remaining green light time, so as to effectively avoid the situation where the traffic signal changes and the user cannot pass halfway, further ensuring safety when passing through the intersection and also effectively improving the efficiency of passing through the intersection.

[0035] (4) Judge through the cooperation of the visual sensor in the blind guide device and the map. The visual sensor is used to determine the specific type and position of the obstacle, while the map is used to judge the relative position between the obstacle and the user's travel route to determine whether it will form an obstacle to the user's progress. If there is an obstacle ahead, start the vibration motors corresponding to the direction and quantity according to the obstacle type to give the wearer advance obstacle prediction. By predicting the information of the obstacle ahead in advance, the wearer can have a clear idea in the next walking direction and can also better respond accurately to tactile instructions, improving the safety of walking. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below with reference to the drawings.

[0037] Figure 1 is a schematic structural diagram of the intelligent bracelet of the present invention in the unfolded state;

[0038] Figure 2 is a schematic structural diagram of the intelligent bracelet of the present invention in the worn state;

[0039] Figure 3 is a flowchart of the direction indication and alarm indication of the intelligent bracelet of the present invention;

[0040] Figure 4 is a block diagram of the traffic signal indication program of the intelligent bracelet of the present invention;

[0041] Figure 5 is a block diagram of the obstacle avoidance indication program of the intelligent bracelet of the present invention.

[0042] In the figure: 1. Bracelet body; 2. First wristband; 3. Second wristband; 4. Front vibration motor; 5. Right front vibration motor; 6. Right vibration motor; 7. Right rear vibration motor; 8. Rear vibration motor; 9. Left rear vibration motor; 10. Left vibration motor; 11. Left front vibration motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1 - 5 As shown, the present invention is a smart bracelet for visually impaired people to indicate actions, which is used in conjunction with a guide device and includes:

[0045] A bracelet body 1, which is used to communicate with the guide device, receive the road information data sent from the guide device, and issue corresponding bracelet control instructions according to the road information data;

[0046] A first wristband 2 and a second wristband 3, which are respectively fixedly connected to both sides of the bracelet body 1 and are used to fixedly connect the bracelet body 1 to the wearer's wrist;

[0047] A plurality of vibration motors are arranged on the inner sides of the bracelet body 1, the first wristband 2 and the second wristband 3, and are used to emit vibrations to give the wearer a physical action indication.

[0048] The bracelet body 1 is provided with:

[0049] A battery module, which is used to provide electrical energy for the bracelet to work, and a rechargeable battery is used to facilitate the replenishment of the electrical energy of the smart bracelet;

[0050] Furthermore, a charging circuit is provided in the bracelet body 1 for charging the battery.

[0051] Preferably, in order to facilitate the visually impaired people to charge the smart bracelet more accurately, the charging is realized by wireless charging to replenish the electrical energy.

[0052] Furthermore, the smart bracelet is equipped with a solar charging module. When the visually impaired people are outdoors on sunny days, carrying the solar charging module can replenish the electrical energy during use, which more effectively ensures the convenience of using the smart bracelet.

[0053] A processor module, which receives the road information data sent from the guide device and processes the data to obtain control instructions matching the bracelet and the road data;

[0054] A communication module, which is used to connect the processor module and the guide device to realize data transmission between the two. Furthermore, the wireless communication method is not limited to Bluetooth, and Zig-Bee, Wi-Fi, etc. can also be used.

[0055] Furthermore, multiple communication methods are used in combination to ensure stable communication in case a single communication method fails.

[0056] The bracelet body 1 is also provided with:

[0057] A control circuit for connecting each vibration motor to achieve on-off control of the vibration motor. The control circuit is connected to the processor module, and the components of the control circuit are adjusted through the processor module to ensure that the corresponding required vibration motor can be accurately enabled under different requirements, so as to accurately indicate the action instructions for the visually impaired.

[0058] Preferably, the smart bracelet further includes a voice module. The voice module is used to emit corresponding indication voices and cooperate with the somatosensory indication to give action instructions to the wearer. By adopting the combination of sound prompts and vibration prompts, it provides auxiliary prompts for the action of the visually impaired. When the visually impaired person is walking, the walking direction is continuously prompted in a vibrating manner to avoid the unclear direction information of the sound prompt, so as to accurately indicate the action of the visually impaired.

[0059] There are eight vibration motors, and the eight vibration motors respectively indicate eight basic directions: front, right front, right, right rear, rear, left rear, left, and left front.

[0060] Specifically, as Figure 1 and Figure 2 shown, they are the front vibration motor 4, the right front vibration motor 5, the right vibration motor 6, the right rear vibration motor 7, the rear vibration motor 8, the left rear vibration motor 9, the left vibration motor 10, and the left front vibration motor 11 respectively. Among them, the front vibration motor 4, the left vibration motor 10, and the left front vibration motor 11 are arranged on the first wristband 2, and the specific positions are that the front vibration motor 4, the left front vibration motor 11, and the left vibration motor 10 are arranged away from the bracelet body 1 in sequence; the right front vibration motor 5, the right vibration motor 6, and the right rear vibration motor 7 are arranged on the inner side of the bracelet body 1. Specifically, the right vibration motor 6 is located between the right front vibration motor 5 and the right rear vibration motor 7, the right front vibration motor 5 is close to the first wristband 2, and the right rear vibration motor 7 is close to the second wristband 3; the rear vibration motor 8 and the left rear vibration motor 9 are arranged on the inner side of the second wristband 3, where the rear vibration motor 8 is close to the bracelet body 1 and the left rear vibration motor 9 is away from the bracelet body 1.

[0061] It should be noted that the above front, back, left, and right are oriented by the forward direction of the bracelet wearer. The setting of the direction is not a limitation on the direction of the solution. The eight basic directions described here are an example of this solution.

[0062] Additionally, the number of vibration motors is not limited to the eight mentioned above. According to the actual application scenario and usage requirements, the number of vibration motors can be flexibly adjusted, and the command meanings assigned to different vibration motors can be adjusted according to actual needs.

[0063] The smart bracelet includes two working modes: direction indication and alarm indication;

[0064] Under the alarm indication, all vibration motors work simultaneously to give an alarm body sensation indication;

[0065] In the direction indication, the vibration motors corresponding to the direction work to give a direction body sensation indication for the wearer to walk.

[0066] The direction indication includes a basic direction indication and a general direction indication;

[0067] The basic direction indication means that the traveling direction belongs to the eight basic directions represented by the eight vibration motors. Under this direction indication, a single vibration motor is started to achieve the direction body sensation indication;

[0068] The general direction indication means that the traveling direction does not belong to the eight basic directions represented by the eight vibration motors. Under this direction indication, the two vibration motors adjacent to the traveling direction are determined, and the two adjacent vibration motors are started simultaneously to emit vibrations to achieve the direction body sensation command.

[0069] In the general direction indication, the two vibration motors adjacent to the traveling direction start vibrating simultaneously, and interpolation of the indicated direction is achieved according to different continuous vibration durations or intermittent vibration frequencies / duty cycles.

[0070] Please refer to Figure 3 As shown, the specific working method of the smart bracelet in the direction indication and alarm indication working modes is as follows:

[0071] After the smart bracelet receives the road information data sent by the blind guiding device, the processor module processes the data to obtain the control indication command matching the bracelet and the road data, and determines whether the indication command is a direction indication. If it is not a direction indication, it is determined that the indication command is an alarm indication. At this time, eight vibration motors are started to work simultaneously to give an alarm prompt to the wearer. After the prompt is completed, the vibration motors stop to complete the current prompt process;

[0072] If it is determined that the indication command is a direction indication, it enters the direction type judgment to further determine whether it is a general direction indication or a basic direction indication. If it is judged that the direction indication is a basic direction indication, the vibration motor corresponding to the direction among the eight vibration motors is started, and after indicating the corresponding basic direction, the current prompt process is completed;

[0073] If it is determined that the direction indication is a general direction indication, determine the two vibration motors adjacent to the traveling direction, and simultaneously start the adjacent two vibration motors to emit vibrations to implement the direction somatosensory instruction, and complete the current prompt process after indicating the corresponding general direction.

[0074] Specifically, Figure 3 also includes two working modes: intersection indication and obstacle avoidance indication. The intersection indication is used to give mobile instructions to the wearer when passing through an intersection with traffic lights, and the obstacle avoidance indication is used to inform the wearer in advance of the types of obstacles existing in the front of the traveling route, and provide obstacle avoidance information to the wearer in advance.

[0075] Please refer to Figure 4 As shown, in another alternative embodiment, the smart bracelet further includes an intersection indication working mode. The specific working method is as follows:

[0076] In the intersection indication working mode, the smart bracelet is connected to the electronic map in the blind guide device. When passing through the traffic lights at the intersection, the electronic map real-time obtains the current state of the traffic lights, and the smart bracelet receives the status data of the traffic lights and issues corresponding instructions to the wearer to ensure that the wearer can safely pass through the traffic lights.

[0077] In the prompt of the traffic lights, a combination of voice prompt and touch prompt is adopted. The voice prompt includes broadcasting the current signal light state and the remaining time under the current signal light state, so that the user can accurately obtain the information of the traffic signal lights and ensure the safety when passing through the intersection.

[0078] Taking the eight vibration motors in the above scheme as an example for the touch prompt, when the wearer walks to the traffic intersection, at this time, the two vibration motors with forward and backward direction indications vibrate simultaneously to prompt the wearer that they have reached the traffic intersection, and then the wearer is prompted to continue moving forward or stop waiting through the received intersection signal light data. If the traffic signal light at the intersection is green at this time, the system determines that it is possible to pass. At this time, the vibration motors in the three directions of forward, left forward and right forward vibrate simultaneously to prompt the wearer that they can pass through the intersection; if the traffic signal light at the intersection is red or yellow at this time, the system determines that it is not possible to pass. At this time, the vibration motors in the three directions of backward, left backward and right backward vibrate simultaneously to prompt the wearer that they cannot pass through the intersection and need to wait at the intersection. When the smart bracelet emits a passable vibration prompt when the green light is on, they can continue to pass through the intersection.

[0079] Furthermore, when the traffic signal light at the intersection is green, it is not completely possible to pass through the intersection. It is necessary to make a comprehensive judgment based on the remaining time of the green light and the time required to pass through the intersection. The passing coefficient is used to judge whether to pass. The calculation formula of the passing coefficient S is:

[0080]

[0081] In the above formula: L is the distance passing through the intersection, v is the average speed at which the smart bracelet obtains the wearer's normal walking speed, α is the reaction time coefficient of the wearer, β is the time coefficient for passing through the intersection, which is changed according to different intersection traffic conditions and the flow of people, and t is the remaining time of the green traffic light when the wearer arrives at the intersection.

[0082] By calculating the passing coefficient for passing through the intersection, if the passing coefficient S ≤ 0.8, it is determined that the intersection can be passed. At this time, the smart bracelet gives a pass instruction, that is, the vibration motors in the three directions of straight ahead, left front, and right front vibrate simultaneously to prompt the wearer that they can pass through the intersection; if the passing index S > 0.8, it means that the remaining green light time at this time is not enough for the wearer to pass through the intersection, then the smart bracelet issues a non-pass instruction, that is, the vibration motors in the three directions of rear, left rear, and right rear vibrate simultaneously to prompt the wearer that they cannot pass through the intersection and need to wait at the intersection.

[0083] Please refer to Figure 5 As shown, in another alternative embodiment, the smart bracelet further includes an obstacle avoidance prompt working mode, and the specific working method is as follows:

[0084] It is judged by the visual sensor in the blind guiding device in cooperation with the map. The visual sensor is used to determine the specific type and position of the obstacle, and the map is used to judge the relative position between the obstacle and the user's traveling route to determine whether it will form an obstacle to the user's progress. If there is an obstacle ahead of the progress, the corresponding vibration motors in the corresponding directions and quantities are activated according to the type of the obstacle to give the wearer an advance obstacle prediction.

[0085] During the walking process of the visually impaired, directly receiving the moving direction indication often feels abrupt, and the change of direction due to unknown reasons will cause the wearer to hesitate in their actions. In order to improve the wearer's reaction efficiency to the direction indication and reduce the mental tension of the wearer during the walking process, by predicting the information of the obstacles ahead in advance, the wearer can have a clear idea in the next walking direction, and can also better respond accurately to the tactile instructions, improving the walking safety.

[0086] Specifically, on the way, there may be puddles, grooves or other obstacles. At this time, the smart bracelet needs to send out corresponding obstacle avoidance signals to prompt the wearer to avoid or cross, and give the wearer an advance obstacle prediction, thereby reducing the fear of unknown obstacles when they are walking.

[0087] When giving obstacle avoidance prompts, a combination of voice prompts and tactile prompts is adopted. The voice prompts include announcing the current obstacle information, enabling the user to accurately obtain relevant information about the obstacle and ensuring safety during walking.

[0088] Taking the eight vibration motors in the above solution as an example for tactile prompts, when the wearer encounters an obstacle ahead during walking, different tactile prompts are given according to the different types and positions of the obstacles. The discrimination of the obstacle is achieved through the blind guide device. Specifically, it can be judged by the visual sensor in the blind guide device in cooperation with the map. The visual sensor is used to determine the specific type and position of the obstacle, and the map is used to judge the relative position between the obstacle and the user's traveling route to determine whether it will hinder the user's progress.

[0089] Specific obstacles include a puddle or trench obstacle directly ahead, an obstructive obstacle diagonally ahead to the left, and an obstructive obstacle diagonally ahead to the right. For the puddle or trench obstacle directly ahead, it can be passed by detouring or crossing, while for the obstructive obstacle, it is passed by detouring and avoiding.

[0090] If the obstacle ahead is a puddle or trench, on the basis of voice prompts, the vibration motors with direction indicators to the left and right vibrate simultaneously, prompting the wearer that there is a puddle or trench ahead. If the blind guide device determines that it can be directly crossed, after the left and right direction vibration motors finish vibrating, the vibration motor with the direction indicator to the front vibrates to prompt the wearer to continue moving forward until the vibration motor in the forward direction stops vibrating and the vibration motor in the backward direction vibrates, indicating that the wearer has moved to the edge of the puddle or trench and needs to cross it. If the blind guide device determines that it is necessary to detour and avoid the obstacle, it detours according to the walking direction indicated by the smart bracelet.

[0091] If the blind guide device determines that the obstacle ahead is an obstructive obstacle diagonally ahead to the left or an obstructive obstacle diagonally ahead to the right, it passes by detouring and avoiding. Specifically, when the obstacle is an obstructive obstacle diagonally ahead to the left, the smart bracelet receives relevant data, and the vibration motors with direction indicators to the front, left, and diagonally ahead to the left vibrate simultaneously, prompting the wearer that there is an obstacle to be avoided diagonally ahead to the left. Similarly, when the obstacle is an obstructive obstacle diagonally ahead to the right, the smart bracelet receives relevant data, and the vibration motors with direction indicators to the front, right, and diagonally ahead to the right vibrate simultaneously, prompting the wearer that there is an obstacle to be avoided diagonally ahead to the right. By giving early prompts about the obstacle ahead, the wearer can be well-prepared for the next walking direction and can also better respond accurately to tactile instructions, improving the safety of walking.

[0092] The above formulas are all de-quantized for numerical calculation. The formulas are obtained by collecting a large amount of data for software simulation to get a formula closest to the actual situation. The preset parameters in the formulas are set by those skilled in the art according to the actual situation.

[0093] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0094] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of the present technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as it does not deviate from the structure of the invention or exceed the scope defined by this claims, it shall fall within the protection scope of the present invention.

Claims

1. An intelligent bracelet for visually impaired people to indicate actions, which is used in cooperation with a guide device, and is characterized in that, Including: A bracelet body, which is used to communicate and connect with a guide device, receive road information data sent from the guide device, and issue corresponding bracelet control instructions according to the road information data; A first wristband and a second wristband, which are respectively fixedly connected to both sides of the bracelet body and are used to fixedly connect the bracelet body to the wearer's wrist; A number of vibration motors, which are arranged on the inner sides of the bracelet body, the first wristband and the second wristband, and are used to emit vibrations to give the wearer a somatosensory action indication.

2. The intelligent bracelet for visually impaired people's movement indication according to claim 1, characterized in that, Inside the bracelet body, there are provided: A battery module, which is used to provide electrical energy for the bracelet to work; A processor module, which receives the road information data sent from the guide device and processes the data to obtain control instructions that match the bracelet and the road data; A communication module, which is used to connect the processor module and the guide device to realize data transmission between the two.

3. The intelligent bracelet for visually impaired people's movement indication according to claim 1, wherein Inside the bracelet body, there are also provided: A control circuit, which is used to connect each vibration motor to realize the on / off control of the vibration motor; A charging circuit, which is used to charge the battery.

4. The intelligent bracelet for visually impaired people's movement indication according to claim 1, characterized in that, The number of the vibration motors is eight, and the eight vibration motors respectively indicate eight basic directions: front, right front, right, right rear, rear, left rear, left, and left front.

5. The intelligent bracelet for visually impaired people's movement indication according to claim 4, characterized in that, The smart bracelet includes two working modes: direction indication and alarm indication; Under the alarm indication, all the vibration motors work simultaneously to give an alarm somatosensory indication; In the direction indication, the vibration motor corresponding to the direction works to give the wearer a direction somatosensory indication for walking.

6. The intelligent bracelet for visually impaired people's movement indication according to claim 5, characterized in that, The direction indication includes basic direction indication and general direction indication; The basic direction indication means that the traveling direction belongs to the eight basic directions represented by the eight vibration motors. Under this direction indication, a single vibration motor is started to realize the direction somatosensory indication; The general direction indication means that the traveling direction does not belong to the eight basic directions represented by the eight vibration motors. Under this direction indication, two vibration motors adjacent to the traveling direction are determined, and the two adjacent vibration motors are started simultaneously to emit vibrations to realize the direction somatosensory instruction.

7. The intelligent bracelet for visually impaired people's movement indication according to claim 6, characterized in that, In the general direction indication, the two vibration motors adjacent to the traveling direction start to vibrate simultaneously, and interpolation of the indicated direction is realized according to different continuous vibration durations or intermittent vibration frequencies / duty ratios.

8. The intelligent bracelet for visually impaired people's movement indication according to claim 1, characterized in that The smart bracelet further includes an intersection indication working mode, and the specific working method is: Under the intersection indication working mode, the smart bracelet is connected to the electronic map in the guide device. When passing through the traffic lights at an intersection, the electronic map real-time obtains the current state of the traffic lights, and the smart bracelet receives the state data of the traffic lights and issues corresponding instructions to the wearer to ensure that the wearer can safely pass through the traffic lights.

9. The intelligent bracelet for visually impaired people's movement indication according to claim 1, characterized in that, The smart bracelet further includes an obstacle avoidance prompt working mode, and the specific working method is: It is judged by the cooperation of the visual sensor in the guide device and the map. The visual sensor is used to determine the specific type and position of the obstacle, and the map is used to judge the relative position between the obstacle and the user's traveling route to judge whether it will form an obstacle to the user's progress. If there is an obstacle ahead of the travel, the vibration motors corresponding to the position and quantity are started according to the type of the obstacle to give the wearer an advance obstacle prediction.

10. A smart bracelet for visually impaired people's movement indication according to any one of claims 1-9, characterized in that, It further includes a voice module, which is used to emit corresponding indication voices and cooperate with the somatosensory indication to give action instructions to the wearer.

Images