Intelligent blind guiding stick based on ultrasonic sensor

Abstract

The invention relates to the technical field of blind guiding sticks, in particular to an intelligent blind guiding stick based on an ultrasonic sensor, which comprises a stick body, an anti-slip handle and an anti-slip mat, the upper end of the stick body is fixedly connected with the anti-slip handle, and the outer side of the lower end of the stick body is sleeved with the detachable anti-slip mat; the crutch further comprises a vibration feedback device and an ultrasonic sensor, the vibration feedback device is arranged in the anti-skid handle, a solar cell panel and light-emitting strips which are symmetrically distributed up and down are installed in a concave position of the outer side of the crutch body, and a standby rechargeable battery, a GPS positioning module and a voice prompt module are sequentially installed on the outer surface of the crutch body from top to bottom. The upper end of the stick body is fixedly connected with an ultrasonic sensor; the intelligent blind guiding stick accurately measures the distance and the position of a front obstacle, an effective vibration feedback and voice prompt mode enables a user to know surrounding environment information in time, more comprehensive travel help is provided for visually impaired people, the endurance requirement of the user is guaranteed through the solar technology and a standby battery, and the intelligent blind guiding stick is suitable for popularization and application. And the portable and long-distance requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of blind canes, and particularly to an intelligent blind cane based on ultrasonic sensors. Background Art

[0002] A blind cane is not just an auxiliary tool for walking, but an important part of the "eyes" of visually impaired people, helping them perceive obstacles ahead, inclined ground, pedals, or other tools for avoiding road safety. Users tap the ground lightly and listen to the sound to judge the ground conditions. When the cane touches an obstacle, the visually impaired person can avoid the obstacle through the vibration and resistance of the cane.

[0003] Traditional blind canes mainly rely on the touch of the blind to perceive the surrounding environment and remind the blind by touching obstacles. This method has great limitations. Traditional blind canes can only detect obstacles that are in direct contact with the cane body and cannot give early warnings for objects that are slightly farther away, which easily leads to collisions when the blind are walking. Traditional blind canes cannot provide more information about the surrounding environment, such as road conditions, traffic signals, etc., making the blind lack a comprehensive understanding when traveling and increasing the possibility of getting lost and encountering danger.

[0004] Therefore, in view of the problems of insufficient accuracy in obstacle detection and inability to give early warnings, an intelligent blind cane based on ultrasonic sensors can be designed. Summary of the Invention

[0005] In order to overcome the problems of insufficient accuracy in obstacle detection and inability to give early warnings.

[0006] The technical solution of the present invention is: an intelligent blind cane based on ultrasonic sensors, including a cane body, a non-slip handle, and a non-slip pad. The upper end of the cane body is fixedly connected with a non-slip handle, and the outer side of the lower end of the cane body is sleeved with a detachable non-slip pad; it also includes a vibration feedback device and an ultrasonic sensor. A vibration feedback device is arranged inside the non-slip handle. A solar panel and symmetrically distributed light-emitting strips are installed in the concave position on the outer side of the cane body. A backup rechargeable battery, a GPS positioning module, and a voice prompt module are installed on the outer surface of the cane body in sequence from top to bottom. The upper end of the cane body is fixedly connected with an ultrasonic sensor;

[0007] Its working steps are as follows: The ultrasonic sensor continuously emits ultrasonic waves and receives the reflected waves, calculates the distance to the obstacle ahead according to the time difference of the reflected waves. When the distance is less than the set value, the vibration feedback device generates vibration to remind the user to pay attention. The GPS positioning module transmits the user's position information to the intelligent device to realize the navigation function through the navigation software. The voice prompt module issues corresponding voice prompts according to the environmental information and navigation instructions.

[0008] Preferably, the solar panel receives sunlight and generates direct current electrical energy. By regulating and protecting the direct current electrical energy, the regulated direct current electrical energy is transmitted to the rechargeable battery for charging. The backup rechargeable battery provides the electrical energy required for the operation of the blind cane. The light-emitting strip emits bright light, which can attract the attention of pedestrians and vehicles to the user, thereby improving the safety of the user. The user holds the anti-slip handle with the hand and places the cane body horizontally in front of the body. The anti-slip pad at the lower end of the cane body fits the ground. When walking, the cane body swings gently from side to side on the ground, and the swinging amplitude should be slightly wider than the body. The ultrasonic sensor continuously emits ultrasonic waves and receives reflected waves, calculates the distance to the obstacle in front according to the time difference of the reflected waves. When the distance is less than the set value, the vibration feedback device generates vibration to remind the user to pay attention. The GPS positioning module transmits the position information of the user to the intelligent device, and realizes the navigation function through the navigation software. The voice prompt module issues corresponding voice prompts according to the environmental information and navigation instructions.

[0009] Preferably, the cane body is made of high-strength and lightweight materials such as aluminum alloy and carbon fiber. The lower end of the cane body adopts a rounded pointed design, and its outer side is coated with an anti-slip pad.

[0010] Preferably, N ultrasonic sensors are provided, where N > 1, and the installation angles of the ultrasonic sensors are different from each other.

[0011] Preferably, the vibration feedback device is any one of an electromagnetic vibrator, a piezoelectric vibrator, a resonator, an eccentric motor, a linear motor, and a ceramic motor.

[0012] Preferably, the GPS positioning module is connected to the intelligent device via Bluetooth, wi-fi, or NFC.

[0013] Preferably, the specific process by which the voice prompt module issues corresponding voice prompts according to the environmental information and navigation instructions is: data collection and processing, information fusion and analysis, voice prompt generation, voice output, and user feedback and adjustment.

[0014] Preferably, the data collection and processing include the following contents:

[0015] A. Collect environmental information and obtain road and obstacle data through the ultrasonic sensor;

[0016] B. Navigation instructions, obtain information such as path planning, turning, and destination from the navigation software;

[0017] C. Data fusion, combine the environmental information with the navigation instructions to generate a comprehensive situation;

[0018] D. Situation analysis, judge the current situation, such as there is an obstacle in front, need to turn, approaching the destination, etc.;

[0019] E. Prompt content generation: Generate corresponding voice prompt text based on the analysis results, such as "There is an obstacle ahead, please detour" or "Turn left in 100 meters".

[0020] F. Voice synthesis: Convert the text into voice, and select appropriate voice styles and intonations.

[0021] G. Audio output: Play the voice prompt through a speaker or headphones.

[0022] H. Volume and clarity adjustment: Adjust the volume and clarity according to the ambient noise.

[0023] I. User feedback: Obtain feedback through user operations or voice recognition.

[0024] J. System adjustment: Optimize the prompt content and voice synthesis effect according to the feedback.

[0025] Preferably, a charging controller and a diode are connected between the solar panel and the backup rechargeable battery.

[0026] Advantages of the present invention:

[0027] 1. Through technologies such as ultrasonic sensors, the intelligent blind stick accurately measures the distance and position of obstacles ahead, overcomes the problem that traditional blind sticks cannot anticipate obstacles at relatively long distances in advance, and can accurately detect objects of different heights and sizes within a certain range. The effective vibration feedback and voice prompt methods enable users to timely understand the surrounding environment information. The connection and navigation functions with devices such as mobile phones provide more comprehensive travel assistance for visually impaired people. The solar technology and backup battery ensure the battery life requirements of users, meeting their portability and long-distance travel needs.

[0028] 2. Improve the travel safety of visually impaired people, reduce the risk of collisions and falls, provide more comprehensive environmental information and navigation assistance, make the travel of visually impaired people more convenient, enhance the independent travel ability of visually impaired people, improve the quality of life, better promote social integration, and enhance the independent travel ability. The emergence of the intelligent blind stick enables visually impaired people to travel more independently, reducing their dependence on others. This not only improves the self-care ability of visually impaired people but also provides them with more opportunities to participate in social activities and integrate into society, enhancing social attention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Shown is the first three-dimensional structure schematic diagram of the intelligent blind stick based on ultrasonic sensors of the present invention;

[0030] Figure 2 Shown is the second three-dimensional structure schematic diagram of the intelligent blind stick based on ultrasonic sensors of the present invention;

[0031] Figure 3 The figure shows a schematic three-dimensional sectional structure diagram of the anti-slip handle in the intelligent blind cane based on ultrasonic sensors of the present invention;

[0032] Figure 4 The figure shows a schematic three-dimensional split structure diagram of the cane body, solar panel and light-emitting strip in the intelligent blind cane based on ultrasonic sensors of the present invention;

[0033] Figure 5 The figure shows the intelligent blind cane based on ultrasonic sensors of the present invention Figure 2 Schematic enlarged structure diagram at position A;

[0034] Figure 6 The figure shows the working flow chart of the intelligent blind cane based on ultrasonic sensors of the present invention.

[0035] Explanation of reference numerals: 1, cane body; 2, anti-slip handle; 3, vibration feedback device; 4, solar panel; 5, light-emitting strip; 6, anti-slip pad; 7, backup rechargeable battery; 8, GPS positioning module; 9, voice prompt module; 10, ultrasonic sensor. Specific embodiments

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

[0037] Please refer to Figures 1 - 6 , the present invention provides an embodiment: an intelligent blind cane based on ultrasonic sensors, including a cane body 1, an anti-slip handle 2 and an anti-slip pad 6. The upper end of the cane body 1 is fixedly connected to the anti-slip handle 2, and the lower end outer side of the cane body 1 is sleeved with a detachable anti-slip pad 6; it also includes a vibration feedback device 3 and an ultrasonic sensor 10. The vibration feedback device 3 is arranged inside the anti-slip handle 2. A solar panel 4 and symmetrically distributed light-emitting strips 5 are installed in the concave position on the outer side of the cane body 1. A backup rechargeable battery 7, a GPS positioning module 8 and a voice prompt module 9 are sequentially installed on the outer surface of the cane body 1 from top to bottom. The upper end of the cane body 1 is fixedly connected to the ultrasonic sensor 10;

[0038] Its working steps are as follows: The ultrasonic sensor 10 continuously emits ultrasonic waves and receives reflected waves, calculates the distance to the obstacle in front according to the time difference of the reflected waves. When the distance is less than the set value, the vibration feedback device 3 generates vibration to remind the user to pay attention. The GPS positioning module 8 transmits the position information of the user to the intelligent device, and realizes the navigation function through the navigation software. The voice prompt module 9 issues corresponding voice prompts according to the environmental information and navigation instructions.

[0039] Please refer to Figure 1 and Figure 3, in this embodiment, the cane body 1 is made of high-strength and lightweight materials such as aluminum alloy and carbon fiber. The lower end of the cane body 1 is designed with a rounded tip, and an anti-slip pad 6 is covered on its outer side. N ultrasonic sensors 10 are provided, and N > 1, and the installation angles of the ultrasonic sensors 10 are different. The vibration feedback device 3 is any one of an electromagnetic vibrator, a piezoelectric vibrator, a resonator, an eccentric motor, a linear motor, and a ceramic motor.

[0040] Please refer to Figures 4 - 5 , in this embodiment, a charging controller and a diode are connected between the solar panel 4 and the backup charging battery 7. The GPS positioning module 8 is connected to the smart device by means of Bluetooth, wi-fi, or NFC. The specific process of the voice prompt module 9 issuing corresponding voice prompts according to the environmental information and navigation instructions is as follows: data collection and processing, information fusion and analysis, voice prompt generation, voice output, and user feedback and adjustment. The data collection and processing include the following contents:

[0041] A. Collect environmental information and obtain road and obstacle data through the ultrasonic sensor 10;

[0042] B. Navigation instructions, obtain information such as route planning, turning, and destination from the navigation software;

[0043] C. Data fusion, combine the environmental information with the navigation instructions to generate a comprehensive situation;

[0044] D. Situation analysis, judge the current situation, such as there is an obstacle ahead, need to turn, approaching the destination, etc.;

[0045] E. Prompt content generation, generate corresponding voice prompt text according to the analysis result, such as "There is an obstacle ahead, please detour" or "Turn left in 100 meters";

[0046] F. Voice synthesis, convert the text into voice and select a suitable voice style and intonation;

[0047] G. Audio output, play the voice prompt through the speaker or earphone;

[0048] H. Volume and clarity adjustment, adjust the volume and clarity according to the environmental noise;

[0049] I. User feedback, obtain feedback through user operations or voice recognition;

[0050] J. System adjustment, optimize the prompt content and voice synthesis effect according to the feedback.

[0051] When working, the solar panel 4 receives sunlight and generates direct current electrical energy. The charging controller regulates and protects the direct current electrical energy, and delivers the regulated direct current electrical energy to the rechargeable battery 7 for charging. The diode can prevent the reverse flow of current into the solar panel 4 at night. The backup rechargeable battery 7 provides the electrical energy required for the operation of the blind cane. The light-emitting strip 5 emits a bright light, which can attract the attention of pedestrians and vehicles to the user, thus improving the safety of the user. The user holds the anti-slip handle 2 with the hand, places the cane body 1 horizontally in front of the body, and the anti-slip pad 6 at the lower end of the cane body 1 fits the ground. When walking, the cane body 1 swings gently from side to side on the ground, and the swinging amplitude should be slightly wider than the body. The ultrasonic sensor 10 continuously emits ultrasonic waves and receives the reflected waves, calculates the distance to the obstacle in front according to the time difference of the reflected waves. When the distance is less than the set value, the vibration feedback device 3 generates vibration to remind the user to pay attention. The GPS positioning module 8 is connected to the intelligent device via Bluetooth, wi-fi or NFC. The GPS positioning module 8 transmits the position information of the user to the intelligent device, and realizes the navigation function through the navigation software. The voice prompt module 9 issues corresponding voice prompts according to the environmental information and navigation instructions.

[0052] Through the above steps, the intelligent blind cane accurately measures the distance and position of the obstacle in front by technologies such as ultrasonic sensors, and can accurately detect objects of different heights and sizes within a certain range. The effective vibration feedback and voice prompt methods enable the user to timely understand the surrounding environmental information. The connection with devices such as mobile phones and the navigation function provide more comprehensive travel assistance for the visually impaired population. The solar technology and the backup battery ensure the battery life requirements of the user, meet the portable and long-distance needs, and solve the problems of insufficient accuracy of obstacle detection and inability to give early warnings.

[0053] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art.

Claims

1. An intelligent blind guide stick based on an ultrasonic sensor comprises a stick body (1), an anti-skid handle (2) and an anti-skid pad (6), wherein the upper end of the stick body (1) is fixedly connected with the anti-skid handle (2), and the lower end of the stick body (1) is sleeved with a detachable anti-skid pad (6); the characteristics are: The invention also comprises a vibration feedback device (3) and an ultrasonic sensor (10); the vibration feedback device (3) is arranged inside the anti-slip handle (2); a solar panel (4) and light strips (5) symmetrically distributed up and down are installed in a concave position outside the stick body (1); a spare rechargeable battery (7), a GPS positioning module (8) and a voice prompt module (9) are installed on the outer surface of the stick body (1) in sequence from top to bottom; and an ultrasonic sensor (10) is fixedly connected to the upper end of the stick body (1); The working steps are as follows: the ultrasonic sensor (10) continuously emits ultrasonic waves and receives reflected waves, and calculates the distance of the obstacle in front according to the time difference of the reflected waves. When the distance is less than the set value, the vibration feedback device (3) generates vibration to remind the user to pay attention, the GPS positioning module (8) transmits the user's location information to the smart device, and realizes the navigation function through the navigation software. The voice prompt module (9) issues corresponding voice prompts according to the environmental information and the navigation instructions.

2. The intelligent blind guide stick based on ultrasonic sensor according to claim 1, characterized in that: The stick body (1) is made of high-strength, light-weight material, such as aluminum alloy or carbon fiber. The lower end of the stick body (1) is designed with a rounded tip, and the outer side of the stick body (1) is covered with an anti-slip pad (6).

3. The intelligent blind guide stick based on ultrasonic sensor according to claim 1, characterized in that: N ultrasonic sensors (10) are provided, where N>1, and the installation angles of the ultrasonic sensors (10) are different.

4. The intelligent blind guide stick based on ultrasonic sensor according to claim 1, characterized in that: The vibration feedback device (3) is any one of an electromagnetic vibrator, a piezoelectric vibrator, a resonator, an eccentric motor, a linear motor and a ceramic motor.

5. The intelligent blind guide stick based on ultrasonic sensor according to claim 1, characterized in that: The GPS positioning module (8) is connected to the smart device via Bluetooth, Wi-Fi or NFC.

6. The intelligent blind guide stick based on ultrasonic sensor according to claim 1, characterized in that: The specific process of the voice prompt module (9) issuing corresponding voice prompts according to environmental information and navigation instructions is: data collection and processing, information fusion and analysis, voice prompt generation, voice output and user feedback and adjustment.

7. The intelligent blind guide stick based on ultrasonic sensor according to claim 6, characterized in that: Data collection and processing include the following: A. Collecting environmental information, obtaining road and obstacle data through ultrasonic sensors (10); B. Navigation instructions, obtain route planning, steering, destination and other information from the navigation software; C. Data fusion, combining environmental information with navigation instructions to generate comprehensive scenarios; D. Situation analysis, judging the current situation, such as obstacles ahead, need to turn, approaching the destination, etc.; E. Prompt content generation: Generate corresponding voice prompt text based on the analysis results, such as "There is an obstacle ahead, please detour" or "Turn left after 100 meters"; F. Speech synthesis, converting text into speech and selecting the appropriate voice style and intonation; G. Audio output, play voice prompts through speakers or headphones; H. Volume and clarity adjustment: adjust the volume and clarity according to the ambient noise; I. User feedback, obtaining feedback through user operations or voice recognition; J. System adjustments to optimize prompt content and speech synthesis effects based on feedback.

8. The intelligent blind guide stick based on ultrasonic sensor according to claim 1, characterized in that: A charging controller and a diode are connected between the solar cell panel (4) and the backup rechargeable battery (7).

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