Ultrasonic vibration feedback navigation cap for the blind
By designing an ultrasonic vibration feedback blind navigation cap, a lidar module and ultrasonic transducer array are used to provide blinding assistance, solving the perceived difficulties of blind people when walking outdoors, and improving travel convenience and mobility efficiency.
Patent Information
- Application Number
- CN202420958946.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-06
AI Technical Summary
Blind people face huge challenges when walking outdoors. Existing auxiliary tools such as blind paths and guide dogs have problems such as small perception range, high costs, and difficult to meet demand.
An ultrasonic vibration feedback blind navigation cap is designed, including the brim body, a lidar module and an ultrasonic transducer array. Through the contactless ultrasonic vibration feedback signal, the wearer provides blinding assistance to achieve effective perception of the surrounding environment.
Through active environmental signal perception, the travel convenience and movement efficiency of blind people are improved, and the location information of obstacles within 180° on the front side is provided, reducing the difficulty of blind people walking outdoors.
Smart Images
Figure CN222708547U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of auxiliary tools, and more specifically to an ultrasonic vibration feedback navigation cap for the blind. Background Art
[0002] A blind person is someone whose visual acuity in both eyes is less than 0.05 or whose visual field is less than 5 degrees, which is often referred to as a completely blind or nearly completely blind person.
[0003] Blindness brings huge challenges to the lives of blind people, especially when walking outdoors, which greatly limits their mobility. Although there are now blind paths on public roads in my country, there are still problems such as damaged blind paths, no other auxiliary props at the end of the blind paths, or small perception range of traditional walking aids such as canes and guide dogs. Secondly, in terms of the number of registered guide dogs, the current number is only a few hundred, which is difficult to meet the needs of a large number of blind people. In addition, the high cost and difficulty of breeding guide dogs also limit their large-scale promotion, making travel among the blind population extremely inconvenient and need to be improved. Summary of the invention
[0004] In view of this, the purpose of this application is to provide an ultrasonic vibration feedback navigation cap for the blind, so as to facilitate the perception of the surrounding environment and improve the travel convenience and mobility efficiency of the blind group. The specific scheme is as follows:
[0005] A navigation cap for the blind with ultrasonic vibration feedback comprises a cap body, a brim body and a laser radar module located on the upper side of the brim body are arranged on the front side of the cap body, and an ultrasonic transducer array is arranged on the lower side of the brim body; the ultrasonic transducer array is used to transmit ultrasonic waves for tactile sensation through air to the wearer's face.
[0006] Preferably: ear side chambers are provided on both sides of the hat body, and spatial audio speakers are provided in the ear side chambers, and the spatial audio speakers are used to cooperate with the ultrasonic transducer array and provide voice prompts.
[0007] Preferably: a brim compartment is provided at the front lower end of the brim body, a front measurement module is provided in the brim compartment, the ultrasonic transducer array is connected to a control mainboard, the control mainboard is connected to the front measurement module and the laser radar module, and the control mainboard is provided with a battery pack for power supply.
[0008] Preferably: the front measurement module includes an IMU and a depth camera module; and a brim bottom layer is provided at the bottom of the brim body.
[0009] Preferably: a front fixing compartment is provided on the front side of the hat body, and the front fixing compartment is used to install and fix the laser radar module.
[0010] Preferably: an elastic fabric portion is provided at the rear end of the hat body, the elastic fabric portion is provided with a connecting belt connected to the hat body, and reflective coatings are provided on the outer sides of the elastic fabric portion and the hat body.
[0011] From the above scheme, it can be seen that the present application provides an ultrasonic vibration feedback navigation cap for the blind, which has the following beneficial effects: actively providing guide assistance to the blind people wearing the ultrasonic vibration feedback navigation cap through non-contact ultrasonic vibration feedback signals, thereby effectively perceiving the surrounding environment based on active environmental signals, thereby achieving the effect of improving the travel convenience and mobility efficiency of the blind group. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of this embodiment;
[0013] Figure 2 It is a schematic diagram of the explosion structure of this embodiment.
[0014] Explanation of the reference numerals: 1. hat body; 11. brim body; 111. brim compartment; 12. elastic fabric part; 121. connecting strap; 13. spatial audio speaker; 14. front fixed compartment; 15. brim bottom layer; 2. ear side compartment; 3. lidar module; 4. ultrasonic transducer array; 41. battery pack; 42. control main board; 43. front measurement module. DETAILED DESCRIPTION
[0015] In order to make the technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0016] like Figure 1 As shown, an ultrasonic vibration feedback navigation cap for the blind includes a cap body 1. A brim body 11 and a laser radar module 3 located on the upper side of the brim body 11 are arranged on the front side of the cap body 1. The laser radar module 3 is used to measure the target distance, motion state and shape to provide accurate position information for the wearer.
[0017] like Figure 1 , Figure 2As shown, an ultrasonic transducer array 4 is provided on the lower side of the brim body 11. The ultrasonic transducer array 4 is used to transmit the ultrasonic waves of tactile sensation through air to the face of the wearer. Therefore, the ultrasonic waves of tactile sensation through air generated by the ultrasonic transducer array 4 act on the face of the wearer, so that the wearer can judge the obstacle position information at the corresponding position through the signals of different frequencies and amplitudes formed at different positions on the face, including but not limited to the direction, distance and turn prompt signal of the obstacle.
[0018] In the embodiment of the present application, the ultrasonic transducer array 4 is used to provide the wearer with obstacle position information within a 180° range on the front side, and provides corresponding position information in the form of 0°, 30°, 60°, 90°, 120°, 150° and 180°. Of course, it can be distributed in arcs of every 15° or every 7.5°, which will not be described in detail here.
[0019] At the same time, the ultrasonic waves of air tactile sensation include air vibration feedback acting on the lips, nose tip and cheeks on both sides. Among them, the air vibration feedback acting on the lips is used to receive orientation information, and the amplitude is 9-12mm and the frequency is 40-70Hz. The air vibration feedback acting on the tip of the nose is used to receive signals of different intensities to perceive the distance, and the amplitude is 9-12mm and the frequency is 40Hz. The air vibration feedback acting on both sides of the cheeks is used to receive navigation signals to achieve the purpose of prompting left and right turns, and the amplitude is 9-12mm and the frequency is 40Hz.
[0020] Regarding frequency and amplitude, it is only used to provide the maximum intensity vibration effect. Therefore, the vibration intensity based on amplitude decreases as the amplitude decreases. The vibration intensity based on frequency is at a peak within the recommended range and then decreases to both sides. In this application, for the tip of the nose and both sides of the cheeks, a frequency of 40Hz is set as the strongest peak frequency, and 10Hz and 70Hz are both relatively weak frequencies; for the lips, 40-70Hz are both the strongest peak frequencies, and 10Hz and 100Hz are both relatively weak frequencies.
[0021] It should be mentioned that ear side chambers 2 are provided on both sides of the hat body 1. A spatial audio speaker 13 is provided in the ear side chamber 2. The spatial audio speaker 13 is used to cooperate with the ultrasonic transducer array 4 and provide voice prompts. At the same time, a brim chamber 111 is provided at the front lower end of the brim body 11. A front measurement module 43 is provided in the brim chamber 111, and the ultrasonic transducer array 4 is connected to the control main board 42. The control main board 42 is connected to the front measurement module 43 and the laser radar module 3, and the control main board 42 is provided with a battery pack 41 for power supply. The front measurement module 43 includes an IMU and a depth camera module. A brim bottom layer 15 is provided at the bottom of the brim body 11. The brim bottom layer 15 has the effect of protecting the ultrasonic transducer array 4 and avoids blocking ultrasonic waves.
[0022] like Figure 1 , Figure 2 As shown, a front fixing chamber 14 is provided on the front side of the hat body 1. The front fixing chamber 14 is used to install and fix the laser radar module 3. Therefore, the laser radar module can be effectively fixed and the laser radar module can be easily installed, disassembled and replaced.
[0023] In order to improve the wearing comfort of the ultrasonic vibration feedback navigation cap for the blind, an elastic fabric portion 12 is provided at the rear end of the cap body 1. The elastic fabric portion 12 is provided with a connecting belt 121 connected to the cap body 1, and a reflective coating is provided on the outer sides of the elastic fabric portion 12 and the cap body 1. The reflective coating improves the safety of the wearer and avoids accidents that are difficult to detect behind the wearer.
[0024] In summary, the present application provides an ultrasonic vibration feedback navigation cap for the blind, which actively provides guide assistance to the blind people wearing the ultrasonic vibration feedback navigation cap through non-contact ultrasonic vibration feedback signals, thereby effectively sensing the surrounding environment based on active environmental signals, thereby achieving the effect of improving the travel convenience and mobility efficiency of the blind group.
[0025] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.
[0026] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0027] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. An ultrasonic vibration feedback navigation cap for the blind, characterized in that: The invention comprises a hat body (1), wherein a brim body (11) and a laser radar module (3) located on the upper side of the brim body (11) are arranged on the front side of the hat body (1), and an ultrasonic transducer array (4) is arranged on the lower side of the brim body (11); the ultrasonic transducer array (4) is used to transmit ultrasonic waves generated through-the-air tactile sensation to the face of the wearer.
2. The ultrasonic vibration feedback navigation cap for the blind according to claim 1, characterized in that: Ear side chambers (2) are provided on both sides of the hat body (1), and spatial audio speakers (13) are provided in the ear side chambers (2). The spatial audio speakers (13) are used to cooperate with the ultrasonic transducer array (4) and provide voice prompts.
3. The ultrasonic vibration feedback navigation cap for the blind according to claim 1, characterized in that: A brim chamber (111) is provided at the lower front end of the brim body (11), a front measurement module (43) is provided in the brim chamber (111), the ultrasonic transducer array (4) is connected to a control mainboard (42), the control mainboard (42) is connected to the front measurement module (43) and the laser radar module (3), and the control mainboard (42) is provided with a battery pack (41) for power supply.
4. The ultrasonic vibration feedback navigation cap for the blind according to claim 3, characterized in that: The front measurement module (43) comprises an IMU and a depth camera module; and a brim bottom layer (15) is provided at the bottom of the brim body (11).
5. The ultrasonic vibration feedback navigation cap for the blind according to claim 1, characterized in that: A front fixing chamber (14) is provided on the front side of the hat body (1), and the front fixing chamber (14) is used to install and fix the laser radar module (3).
6. The ultrasonic vibration feedback navigation cap for the blind according to claim 1, characterized in that: An elastic fabric portion (12) is provided at the rear end of the hat body (1), the elastic fabric portion (12) is provided with a connecting belt (121) connected to the hat body (1), and the outer sides of the elastic fabric portion (12) and the hat body (1) are both provided with a reflective coating.