Blind navigation glasses, auxiliary system and navigation assistance method

Abstract

The application discloses a blind navigation glasses, an auxiliary system and a navigation auxiliary method, which comprise: a glasses frame; two lens structures, which form a circuit accommodating space inside; a circuit module, at least a part of the circuit module being arranged in the circuit accommodating space; a binocular image acquisition module, which is used for synchronously acquiring environment images of different visual angles; a wired data interface, which is used for establishing a wired connection with a mobile terminal and receiving power supply from the mobile terminal and transmitting binocular image data to the mobile terminal; an audio output device, which is used for outputting navigation auxiliary prompts to a wearer; and a microphone, which is used for receiving voice instructions of the wearer. The application not only reduces devices in the glasses legs and improves weight distribution, but also obtains obstacle space information by using a binocular camera, improves the perception ability of distance, size and direction, does not need a battery and a Wi-Fi module, and meanwhile, basic functions are guaranteed by local processing of the mobile phone, and cloud computing power can be expanded as required.

Description

Technical Field

[0001] This invention relates to the fields of wearable assistive devices and navigation technology, and in particular to a navigation glasses, assistive system and navigation assistance method for the blind that employs binocular cameras, non-transparent lenses with built-in circuitry, mobile terminal collaborative processing and bone conduction voice interaction. Background Technology

[0002] Existing assistive glasses for the blind typically use a monocular camera, which makes it difficult to directly obtain information such as the distance, size, and spatial orientation of obstacles; some solutions integrate the processor, battery, and communication module into the temple, increasing the size and weight of the temple and affecting long-term wear.

[0003] Some cloud-based recognition solutions require wireless communication modules and independent power supplies on the glasses, and rely continuously on the network; when the network is unstable, basic obstacle avoidance functions may be affected. On the other hand, visually impaired people do not rely on transparent lenses to observe the environment, and existing solutions do not fully utilize the lens area for circuitry; there is still room for improvement in the internal space of the lenses and the overall weight distribution of the glasses.

[0004] Furthermore, using a phone speaker or in-ear headphones for prompts may compromise privacy or block out ambient sounds; if the glasses lack a microphone, it's inconvenient for the wearer to directly input navigation destinations and control the system via voice. Therefore, a navigation assistance solution is needed that is centered around the glasses structure, takes into account binocular spatial perception, is lightweight, battery-free, and supports two-way voice interaction. Summary of the Invention

[0005] The purpose of this invention is to provide a technical solution for navigation glasses, an assistive system, and a navigation assistance method for the blind, addressing the shortcomings of existing technologies. By placing at least part of the circuitry inside the non-transparent lenses, the number of components and the size of the temples are reduced. Obstacle spatial information is obtained through a binocular camera, and the glasses are powered and data is transmitted from a mobile device via a Type-C wired connection, eliminating the need for batteries and Wi-Fi modules in the glasses.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A navigation glasses for the blind, characterized in that it includes:

[0008] Eyeglass frames, including the frame and temples;

[0009] Two lens structures, at least one of which is a non-transparent lens structure, and the interior of the lens structure forms a circuit-accommodating space;

[0010] A circuit module, at least a portion of which is disposed within a circuit accommodating space;

[0011] The binocular image acquisition module includes two cameras spaced apart at the front of the eyeglass frame, used to simultaneously acquire environmental images from different perspectives;

[0012] A wired data interface is used to establish a wired connection with the mobile device, receive power from the mobile device, and transmit binocular image data to the mobile device.

[0013] An audio output device for providing navigation assistance prompts to the wearer;

[0014] And a microphone, used to receive the wearer's voice commands.

[0015] Furthermore, both lens structures are non-transparent, and each non-transparent lens structure has a circuit accommodating space. The circuit modules are distributed within the two circuit accommodating spaces to reduce the number of components in the temple and the cross-sectional size of the temple.

[0016] Furthermore, the two cameras are spaced at a predetermined interval and correspond to the left and right eyes respectively. The circuit module is used to receive the binocular images captured by the two cameras and transmit the binocular images to the mobile terminal so that the mobile terminal can obtain at least one of the obstacle's type, distance, size, and relative orientation.

[0017] Furthermore, the audio output device includes a bone conduction oscillator located on the temple of the glasses and capable of contacting the wearer's temporal bone region, and a microphone located on the frame or temple of the glasses.

[0018] Furthermore, the audio output device, microphone, and circuit module are all powered by the mobile device via a wired data interface.

[0019] A navigation assistance system for the blind, characterized in that it includes navigation glasses as described above and a mobile terminal wiredly connected to the navigation glasses, the mobile terminal comprising:

[0020] The image processing module is used to process the received binocular image data to obtain the left and right eye images;

[0021] The target recognition module is used to identify obstacles.

[0022] A binocular spatial perception module is used to acquire spatial information about obstacles based on left and right eye images;

[0023] The risk information generation module is used to generate navigation assistance prompts based on obstacles and their spatial information;

[0024] It also includes a voice interaction module for interacting with the audio output device and microphone of the navigation glasses for the blind.

[0025] Furthermore, the mobile device is configured to perform at least one of obstacle recognition, binocular spatial awareness, and navigation assistance prompt generation locally by default, in order to maintain basic navigation assistance functions when not connected to the network.

[0026] Furthermore, the mobile device also includes a cloud invocation module, which is used to send selected images, image features or recognition requests to the cloud processing module when it is necessary to expand recognition or understand complex scenes, and to receive the cloud processing results; the cloud processing results serve as a supplement to the local processing results on the mobile device.

[0027] Furthermore, the risk information generation module is used to generate prompt information based on at least two of the obstacle's category, distance, size, and relative orientation. The prompt information includes obstacle information, avoidance information, or directional guidance information.

[0028] Furthermore, the mobile device also includes a navigation module and a prompt scheduling module. The prompt scheduling module is used to prioritize obstacle avoidance prompts over general navigation prompts when the obstacle risk meets preset conditions, and outputs them through the audio output device.

[0029] A navigation assistance method using the aforementioned navigation assistance system for the blind, characterized by comprising the following steps:

[0030] Two cameras on the glasses simultaneously capture environmental images from different perspectives;

[0031] The binocular images are transmitted to the mobile device via a wired connection, and the mobile device supplies power to the glasses via the wired connection.

[0032] The mobile device identifies obstacles locally by default and obtains spatial information of the obstacles based on binocular images, and generates navigation assistance prompts based on the obstacles and their spatial information.

[0033] Navigation assistance prompts are output through the audio output device on the glasses, and voice commands from the wearer are received through the microphone on the glasses.

[0034] Furthermore, two cameras on the glasses simultaneously capture environmental images from different perspectives. After processing by the mobile device, the environmental images are used to obtain at least one spatial information of the obstacle, including its distance, size, and relative orientation.

[0035] Furthermore, the mobile device completes basic obstacle recognition and spatial information acquisition locally, and calls the cloud processing module as needed when it is necessary to expand recognition or understand complex scenes. The cloud processing module obtains the cloud processing results as a supplement to the local processing results.

[0036] Furthermore, the navigation assistance prompts are output through the audio output device at the glasses, and the voice commands of the wearer are received through the microphone at the glasses. Specifically, the output content is adjusted according to the obstacle risk and navigation status, so that the danger prompts take precedence over the general navigation prompts. When the voice command of the wearer is received, the voice command is recognized and the corresponding navigation or query operation is generated.

[0037] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0038] 1. This invention utilizes the internal space of a non-transparent lens to house circuitry, reducing the number of components inside the temples and improving weight distribution.

[0039] 2. This invention utilizes a binocular camera to obtain spatial information about obstacles, thereby improving the ability to perceive distance, size, and orientation.

[0040] 3. The glasses of this invention are powered and transmit data via Type-C, eliminating the need for batteries and Wi-Fi modules.

[0041] 4. The mobile phone local processing of this invention ensures basic functions, and cloud computing power can be expanded as needed.

[0042] 5. The bone conduction and microphone of the present invention form a two-way voice interaction that does not block ambient sound. Attached Figure Description

[0043] The present invention will be further described below with reference to the accompanying drawings:

[0044] Figure 1 This is a schematic diagram of the overall appearance structure of the navigation assistance system in the navigation glasses, assistance system and navigation assistance method for the blind of the present invention;

[0045] Figure 2 This is a schematic diagram of the structure of the glasses end in the navigation glasses of this invention;

[0046] Figure 3 This is a schematic diagram of the hardware structure and connections in the navigation assistance system of this invention;

[0047] Figure 4 This is a schematic diagram illustrating the functional connections of the binocular camera module in this invention;

[0048] Figure 5 This is a flowchart of the navigation assistance method in this invention.

[0049] In the diagram: 1-Glasses end; 2-Mobile end; 3-Wired connection; 4-Binocular image acquisition module; 5-Glasses end processing module; 6-Wired data interface; 7-Glasses frame; 8-Left frame; 9-Right frame; 10-Template; 11-Left non-transparent lens; 12-Right non-transparent lens; 13-Left eye camera; 14-Right eye camera; 17-Bone conduction oscillator; 18-Microphone. Detailed Implementation

[0050] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0053] like Figure 1 As shown, this invention provides a navigation assistance system for the blind, comprising an eyeglasses end 1, a mobile end 2, and a wired connection 3 connecting the two. A binocular image acquisition module 4 is located at the front of the eyeglasses frame 7, and the wired data interface is connected to the mobile end 2 via a data cable.

[0054] The navigation glasses for the blind and a mobile terminal 2 connected to the navigation glasses 3 by wire, the mobile terminal 2 including: an image processing module, a target recognition module, a binocular spatial perception module, a risk information generation module and a voice interaction module.

[0055] The image processing module is used to process the received binocular image data to obtain the left and right eye images.

[0056] The target recognition module is used to identify obstacles.

[0057] The binocular spatial perception module is used to acquire spatial information about obstacles based on the left and right eye images.

[0058] The risk information generation module is used to generate navigation assistance prompts based on obstacles and their spatial information. The module generates prompt information based on at least two of the obstacle's category, distance, size, and relative orientation. The prompt information includes obstacle information, avoidance information, or directional guidance information.

[0059] The voice interaction module is used to interact with the audio output device and microphone 18 of the navigation glasses for the blind. The audio output device is preferably a bone conduction audio output device.

[0060] Mobile device 2 is configured to perform at least one of obstacle recognition, binocular spatial perception, and navigation assistance prompt generation locally by default, in order to maintain basic navigation assistance functions when not connected to the network. When extended capabilities such as text recognition, complex scene understanding, or target confirmation are required, mobile device 2 can send selected images, image features, or requests to the cloud processing module as needed, with the cloud processing results supplementing the local processing results.

[0061] Mobile device 2 also includes a cloud invocation module, which is used to send selected images, image features or recognition requests to the cloud processing module when it is necessary to expand recognition or understand complex scenes, and to receive cloud processing results; the cloud processing results serve as a supplement to the local processing results of mobile device 2.

[0062] Mobile device 2 generates navigation assistance prompts based on obstacle type, distance, size, relative orientation, and other information, and outputs them through bone conduction oscillator 17 of glasses device 1. The wearer inputs the destination or control commands through microphone 18 of glasses device 1.

[0063] Mobile terminal 2 also includes a navigation module and a prompt scheduling module. The prompt scheduling module is used to prioritize obstacle avoidance prompts over general navigation prompts when the obstacle risk meets preset conditions, i.e. when danger prompts conflict with general navigation prompts, and outputs them through the bone conduction audio output device.

[0064] like Figure 2 As shown, the eyeglass end 1 includes an eyeglass frame 7, two lens structures, a circuit module, a binocular image acquisition module 4, a bone conduction audio output device, and a microphone 18.

[0065] The eyeglass frame 7 includes a frame and temples 10. The frame includes a left frame 8 and a right frame 9.

[0066] At least one of the two lens structures is a non-transparent lens structure, and the interior of the lens structure forms a circuit-accommodating space. Both lens structures are non-transparent lens structures, and each of the two non-transparent lens structures has a circuit-accommodating space. Preferably, the left and right lenses are a left non-transparent lens 11 and a right non-transparent lens 12, respectively.

[0067] At least a portion of the circuit module is disposed within the circuit accommodating space. The circuit module may include a first circuit board and a second circuit board, distributed within the two circuit accommodating spaces to reduce the number of components in the temple 10 and the cross-sectional size of the temple 10. Depending on the product layout, the circuit may also be disposed only in one lens, with auxiliary circuitry disposed in another lens, frame, or temple 10. The number and fixing method of the left non-transparent lens 11, the right non-transparent lens 12, the circuit boards, and the other components can all be adjusted according to the size of the eyeglass frame 7.

[0068] The binocular image acquisition module 4 includes two cameras, a left-eye camera 13 and a right-eye camera 14, spaced apart at the front of the eyeglass frame 7, maintaining a predetermined baseline distance, for simultaneously acquiring environmental images from different perspectives. The two cameras have a predetermined interval and correspond to the left and right eyes respectively. The circuit module receives the binocular images acquired by the two cameras and transmits them to the mobile terminal 2, allowing the mobile terminal 2 to obtain at least one of the obstacle's category, distance, size, and relative orientation. The mobile terminal 2 can acquire spatial information such as the distance, size, and relative orientation of obstacles based on the binocular images. This invention is not limited to a specific target recognition, binocular matching, or ranging algorithm.

[0069] The wired data interface 6 is used to establish a wired connection 3 with the mobile terminal 2, and to receive power from the mobile terminal 2 and transmit binocular image data to the mobile terminal 2. The wired data interface 6 is a Type-C wired interface, which is used to simultaneously enable the mobile terminal 2 to supply power to the glasses terminal 1 and to transmit data between the glasses terminal 1 and the mobile terminal 2. By using the Type-C wired interface to supply power to the glasses terminal 1 and transmit data, the glasses terminal 1 does not need to be equipped with a battery and a Wi-Fi module.

[0070] A bone conduction audio output device is used to provide navigation assistance prompts to the wearer. The device includes a bone conduction vibrator 17 mounted on the temple 10 and capable of contacting the wearer's temporal bone region, allowing the wearer to still perceive ambient sound while receiving prompts. A microphone 18 is mounted on the frame or temple 10 for acquiring voice commands. The bone conduction audio output device, microphone 18, and circuit module are all powered by the mobile terminal 2 via a wired data interface 6.

[0071] like Figure 3 As shown, the binocular images are transmitted via the glasses-side processing module 5 to the Type-C wired interface, and then via a Type-C data cable to the mobile device 2. The mobile device 2 performs target recognition, binocular spatial perception, navigation assistance information generation, and voice interaction locally by default. The cloud processing module is optional and is only invoked by the mobile device 2 as needed when extended recognition or understanding of complex scenes is required.

[0072] In one specific embodiment, the glasses-side processing module 5 can be an Allwinner V821, and the left eye camera 13 and right eye camera 14 can be GC2083. The binocular images can enter the processing module through the MIPI-CSI interface and be transmitted to a mobile phone supporting USB Host function via a Type-C wired interface in the form of USB / UVC. The above-mentioned chips, interfaces, and protocols are only optional embodiments, and other devices and data formats that can perform equivalent functions can also be used.

[0073] like Figure 4 As shown, the two GC2083 cameras can be connected to the two image input channels of the V821 respectively, and their clock, control, reset, and power connections can be configured separately. The power management module converts the Type-C input voltage into the operating voltage required by the processing module, camera, and audio module. This embodiment only illustrates the module connection and power supply relationship, and does not limit the specific pin numbers, resistor and capacitor parameters, or printed circuit board wiring.

[0074] As a quantitative supplement to the above embodiments: the baseline distance between the two cameras is naturally provided by the frame width, preferably 55mm≤B≤65mm; under this baseline, the ranging error for obstacles within a range of 1m to 5m is preferably controlled within 10%. The overall weight of the glasses is preferably no more than 50g, with the circuitry moved forward to behind the lenses, and the weight of one temple is preferably no more than 10g; the overall power consumption of the glasses is preferably no more than 1.5W, which can be met by power supply from the mobile terminal 2 via a Type-C wired interface, without the need for an additional battery. The above values ​​are all preferred ranges and do not constitute a rigid limitation on the scope of protection.

[0075] In another embodiment, the main circuit board is located only within the left non-transparent lens 11, while the right lens retains a non-transparent counterweight structure or only has auxiliary circuitry (e.g., power management circuitry). The main circuit board and auxiliary circuitry are connected via wiring within the frame. Unlike existing solutions that centralize the processor and battery in the temple, this embodiment maintains left-right weight balance while further reducing the cross-sectional size of the temple 10 to the level of a typical optical eyeglass temple. The front circuit layout topology of this embodiment is formed by the circuitry within the non-transparent lens and the wiring within the frame.

[0076] In another embodiment, the scheduling module sets risk levels: when the obstacle distance is less than a first threshold (preferably 1.5m ≤ D1 ≤ 2.5m) and it is located within the direction of travel sector, it is determined to be high-risk, and an obstacle avoidance prompt is immediately output, taking precedence over general navigation prompts; when the obstacle distance is between the first threshold and the second threshold (preferably 4m ≤ D2 ≤ 6m), the obstacle avoidance prompt is inserted after the current navigation statement ends. Unlike existing solutions that broadcast all information in a fixed order, this embodiment avoids the auditory channel being continuously occupied by low-priority information through risk-level scheduling. This embodiment is based on a risk-level scheduling mechanism with both distance threshold and direction sector conditions.

[0077] After receiving binocular images, mobile device 2 can identify obstacles and obtain their spatial information. This spatial information can include one or more of the following: distance, size, left or right orientation, direct front position, and height. The risk information generation module uses this information to create concise prompts, preventing irrelevant information from continuously occupying the auditory channel.

[0078] Mobile device 2 operates in local processing mode by default. When the local processing results are insufficient to support text recognition, complex scene description, or target confirmation, mobile device 2, with user authorization or system configuration permission, can send the selected image, image features, or recognition request to the cloud processing module and combine the cloud-returned results with the local results. The glasses device 1 itself does not directly establish a Wi-Fi connection.

[0079] like Figure 5 As shown, this invention provides a navigation assistance method using the aforementioned navigation assistance system for the blind, comprising the following steps:

[0080] Two cameras on the glasses 1 simultaneously acquire environmental images from different perspectives; the environmental images are processed by the mobile terminal to obtain at least one spatial information of the obstacle, including distance, size, and relative orientation.

[0081] The binocular images are transmitted to the mobile terminal 2 via the wired connection 3, and the mobile terminal 2 supplies power to the glasses terminal 1 via the wired connection 3.

[0082] By default, mobile device 2 identifies obstacles locally and obtains spatial information of obstacles based on binocular images, and generates navigation assistance prompts based on obstacles and their spatial information;

[0083] Navigation assistance prompts are output via the bone conduction audio output device at the glasses end 1, and voice commands from the wearer are received via the microphone 18 at the glasses end 1. This navigation assistance method only limits the function and data relationship, and does not limit the specific algorithm, model, threshold, or protocol version.

[0084] Mobile device 2 completes basic obstacle recognition and spatial information acquisition locally, and calls the cloud processing module as needed when it is necessary to expand recognition or understand complex scenes. The cloud processing module obtains the cloud processing results as a supplement to the local processing results.

[0085] The navigation assistance prompts are output through the bone conduction audio output device of the glasses end 1, and the voice commands of the wearer are received through the microphone 18 of the glasses end 1. Specifically, the output content is scheduled according to the obstacle risk and navigation status, so that the danger prompts take precedence over the general navigation prompts. When the voice command of the wearer is received, the voice command is recognized and the corresponding navigation or query operation is generated.

[0086] This invention enables mutual connectivity under specific conditions: First, visually impaired wearers do not rely on the lenses to transmit light for environmental observation, allowing the lenses to have a non-transparent structure and internal circuitry space. This is the physical prerequisite for moving the circuitry module from the temple to the lens area. Second, moving the circuitry forward reduces the number and cross-sectional dimensions of components in the temple, creating conditions for the placement of bone conduction oscillators and improved comfort during extended wear. Third, the wired data interface is powered and transmits binocular images from the mobile device, eliminating the need for batteries and wireless communication modules on the glasses. This further reduces the weight and heat generation of the glasses, conversely ensuring heat dissipation and structural feasibility of the internal circuitry within the lenses. Fourth, the frame width naturally provides a baseline distance for the binocular cameras, allowing spatial perception capabilities to be acquired without adding extra structures. These conditions and mutual enabling relationships effectively resolve the long-standing design constraints between lightweight wear, power supply, and spatial perception capabilities in existing technologies, collectively constituting the overall technical solution of this invention that distinguishes it from monocular solutions, temple-based centralized placement solutions, and cloud-dependent solutions.

[0087] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to achieve substantially the same technical effect are all covered within the protection scope of the present invention.

Claims

1. A navigation glasses for the blind, characterized in that, include: Eyeglass frames, including the frame and temples; Two lens structures, at least one of which is a non-transparent lens structure, and a circuit-accommodating space is formed inside the lens structure; A circuit module, at least a portion of which is disposed within the circuit accommodating space; The binocular image acquisition module includes two cameras spaced apart at the front of the eyeglasses frame, used to simultaneously acquire environmental images from different perspectives; A wired data interface is used to establish a wired connection with a mobile device, receive power from the mobile device, and transmit binocular image data to the mobile device. An audio output device for providing navigation assistance prompts to the wearer; And a microphone, used to receive the wearer's voice commands.

2. The navigation glasses for the blind according to claim 1, characterized in that: Both of the lens structures are non-transparent lens structures, and each of the two non-transparent lens structures has a circuit accommodating space. The circuit modules are distributed and arranged in the two circuit accommodating spaces to reduce the number of components in the temple and the cross-sectional size of the temple.

3. The navigation glasses for the blind according to claim 1, characterized in that: The two cameras are spaced at a predetermined interval and correspond to the left and right eyes respectively. The circuit module is used to receive the binocular images captured by the two cameras and transmit the binocular images to the mobile terminal so that the mobile terminal can obtain at least one of the obstacle's type, distance, size and relative orientation.

4. The navigation glasses for the blind according to claim 1, characterized in that: The audio output device includes a bone conduction transducer disposed on the temple and capable of contacting the wearer's temporal bone region, and the microphone is disposed on the frame or temple.

5. The navigation glasses for the blind according to claim 1, characterized in that: The audio output device, the microphone, and the circuit module are all powered by the mobile terminal via the wired data interface.

6. A navigation assistance system for the blind, characterized in that: Includes navigation glasses for the blind as described in any one of claims 1 to 5 and a mobile terminal wiredly connected to the navigation glasses for the blind, wherein the mobile terminal includes: The image processing module is used to process the received binocular image data to obtain the left and right eye images; The target recognition module is used to identify obstacles. A binocular spatial perception module is used to acquire spatial information of obstacles based on the left and right eye images; The risk information generation module is used to generate navigation assistance prompts based on obstacles and their spatial information; It also includes a voice interaction module for interacting with the audio output device and microphone of the navigation glasses for the blind.

7. The navigation assistance system for the blind according to claim 6, characterized in that: The mobile device is configured to perform at least one of obstacle recognition, binocular spatial perception, and navigation assistance prompt generation locally by default, in order to maintain basic navigation assistance functions when not connected to a network.

8. The navigation assistance system for the blind according to claim 6, characterized in that: The mobile device also includes a cloud invocation module, which is used to send selected images, image features or recognition requests to the cloud processing module when extended recognition or complex scene understanding is required, and to receive cloud processing results; the cloud processing results serve as a supplement to the local processing results of the mobile device.

9. The navigation assistance system for the blind according to claim 6, characterized in that: The risk information generation module is used to generate prompt information based on at least two of the obstacle's category, distance, size, and relative orientation. The prompt information includes obstacle information, avoidance information, or directional guidance information.

10. The navigation assistance system for the blind according to claim 6, characterized in that: The mobile device also includes a navigation module and a prompt scheduling module. The prompt scheduling module is used to prioritize obstacle avoidance prompts over general navigation prompts when the obstacle risk meets preset conditions, and output them through the audio output device.

11. A navigation assistance method implemented using the navigation assistance system for the blind as described in any one of claims 6 to 10, characterized in that, Includes the following steps: Two cameras on the glasses simultaneously capture environmental images from different perspectives; The binocular images are transmitted to the mobile device via a wired connection, and the mobile device supplies power to the glasses via the wired connection. The mobile device identifies obstacles locally by default and obtains spatial information of the obstacles based on binocular images, and generates navigation assistance prompts based on the obstacles and their spatial information. The navigation assistance prompts are output through the audio output device on the glasses, and the wearer's voice commands are received through the microphone on the glasses.

12. The navigation assistance method according to claim 11, characterized in that: Two cameras on the glasses simultaneously capture environmental images from different perspectives. These environmental images are then processed by the mobile device to obtain at least one spatial information of the obstacle, including its distance, size, and relative orientation.

13. The navigation assistance method according to claim 11, characterized in that: The mobile device completes basic obstacle recognition and spatial information acquisition locally, and calls the cloud processing module as needed when it is necessary to expand recognition or understand complex scenes. The cloud processing module obtains the cloud processing results as a supplement to the local processing results.

14. The navigation assistance method according to claim 11, characterized in that: The process of outputting navigation assistance prompts through the audio output device at the glasses and receiving the wearer's voice commands through the microphone at the glasses specifically includes adjusting the output content according to obstacle risk and navigation status, prioritizing danger prompts over general navigation prompts, and recognizing the voice commands received from the wearer and generating corresponding navigation or query operations.

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