Novel blind guiding stick based on tactile feedback

Abstract

The novel blind guiding stick comprises a stick body, a cavity is formed in the stick body, the inner bottom wall of the cavity is fixedly connected with a storage battery, the inner wall of the cavity is fixedly connected with a fixing frame, the inner side wall of the fixing frame is fixedly connected with an STM single-chip microcomputer, a digital-to-analog converter and a Bluetooth module, and the STM single-chip microcomputer, the digital-to-analog converter and the Bluetooth module are connected with the storage battery. Three light induction lamps are fixedly connected to the outer surface of the stick body, two small ultrasonic radars are fixedly connected to the lower portion of the outer surface of the stick body, the two small ultrasonic radars are arranged in a fan shape, a positioning sleeve is fixedly connected to the top end of the stick body, and a sliding ring is slidably connected to the interior of the positioning sleeve; and two rubber plates are clamped in the sliding ring. According to the tactile feedback-based blind guide stick, the tactile feedback-based navigation function is realized, the blind can be better guided to go to a destination according to a route and accurately and clearly guided to turn left and right, and the guide effect of the tactile feedback-based blind guide stick is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to blind stick technical field especially relates to a new blind stick based on haptic feedback. BACKGROUND

[0002] The blind stick is the appliance for the visual impairment to guide or identify the surrounding environment, is mainly by wrist belt, handle, stick body and stick tip four parts constitute, when the blind person goes out, can use the blind stick to find out the surrounding environment, and then prevent the collision with the building or other articles, increased the visual impairment that is blind person's travel safety.

[0003] The utility model discloses a blind stick in prior art patent publication No. CN219783083U discloses a blind stick, including upper sleeve casing, the upper sleeve casing top fixedly connected with the handle, the handle is fixedly connected with silica gel hand protection, the lower part of upper sleeve casing is provided with lower sleeve casing, the upper portion of lower sleeve casing is provided with locking sleeve, the bottom of lower sleeve casing is provided with blind stick wheel, the blind stick wheel includes wheel hub frame, connecting shaft, wheel and wheel hub.

[0004] The above technical scheme although blind stick wheel walks more stably according to the distance of blind way surface protrusion, reduces the hand burden when blind person pushes, does not need to stop the traditional blind stick and carry out the knock exploration of large amplitude, but can directly stick the blind stick and explore forward, is more labor-saving and convenient, but the above technical scheme blind stick cannot guide blind person to go to the destination according to the route when using, and cannot more accurately and clearly guide blind person to turn left and right, influence the guiding effect of blind stick, therefore the technical personnel in the art provide a new blind stick based on haptic feedback to solve the problems in the above background art. UTILITY MODEL CONTENTS

[0005] Therefore, it is necessary to provide a new blind stick based on haptic feedback to solve the problem that it cannot guide blind people to go to the destination according to the route, and cannot more accurately and clearly guide blind people to turn left and right.

[0006] According to one aspect of the utility model, provide a kind of novel guide stick based on tactile feedback, including pole body, the inside of pole body is equipped with cavity, the inner bottom wall of cavity is fixedly connected with battery, the inner wall of cavity is fixedly connected with fixed frame, the inner side wall of fixed frame is fixedly connected with STM single-chip microcomputer, digital-analog converter and bluetooth module respectively, the outer surface of pole body is fixedly connected with three light response lamps, the lower part of the outer surface of pole body is fixedly connected with two small ultrasonic radar, two the small ultrasonic radar are arranged in fan shape, the top of pole body is fixedly connected with positioning sleeve, the inside of positioning sleeve is slidably connected with sliding ring, the inside of sliding ring is clamped with two rubber plates, the side surface of two the rubber plates mutually close is fixedly connected with mounting seat, the mounting seat is fixedly embedded in the inside of sliding ring, the inside of mounting seat is provided with two PVCG film circular flexible drivers, the power end of two the PVCG film circular flexible drivers is fixedly connected with the side surface of two rubber plates mutually close respectively, STM single-chip microcomputer, digital-analog converter, bluetooth module, three light response lamps, two small ultrasonic radar and two PVCG film circular flexible drivers are electrically connected with battery by wire, digital-analog converter, bluetooth module, three light response lamps, two small ultrasonic radar and two PVCG film circular flexible drivers are electrically connected with STM single-chip microcomputer by wire.

[0007] According to some embodiments, the bottom end of the pole body is fixedly connected with a connecting plate, and the bottom surface of the connecting plate is fixedly connected with wear-resistant blocks.

[0008] According to some embodiments, the outer surface of the battery is fixedly connected with three reinforcing rings, and the outer surface of each reinforcing ring is fixedly connected with the inner wall of the cavity.

[0009] According to some embodiments, the outer surface of the pole body is fixedly connected with a charging head, and the charging head is electrically connected with the battery by wire.

[0010] According to some embodiments, the upper surface and the bottom surface of the fixed frame are both provided with first wire connection holes, and the inside of the pole body is provided with a second wire connection hole.

[0011] According to some embodiments, the outer surface of the positioning sleeve is fixedly connected with two first magnet rings, and the outer surface of the sliding ring is fixedly connected with two second magnet rings, wherein the bottom surface of one of the second magnet rings is attracted to the upper surface of one of the first magnet rings.

[0012] According to some embodiments, the outer surface of the sliding ring is fixedly connected with a direction marker, and the upper surface of the direction marker is fixedly connected with Braille.

[0013] According to some embodiments, the inner wall of the mounting seat is fixedly connected with a stable plate, and the side face of the two PVCG film circular flexible drivers close to each other is fixedly connected with the front face and the back face of the stable plate respectively.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] Through the setting of the Bluetooth module, the mobile phone can be connected, the user inputs the travel destination on the mobile phone and starts to walk, the Bluetooth module starts to receive the data of the mobile phone navigation, then the STM32 singlechip decodes and processes the digital data, converts the control signal into the pulse waveform suitable for the electric stimulation, then the digital-analog converter converts the digital signal into the analog electric signal, the electric signal stimulates the PVCG film circular flexible driver to contract, when the left turn is needed, the electric signal stimulates the rear driver to contract, when the right turn is needed, the electric signal stimulates the front driver to contract, the blind guiding stick realizes the navigation function based on the tactile feedback, can better guide the blind person to go to the destination according to the route, and accurately and clearly points out the left and right turns for the blind person, effectively increases the guiding effect of the blind guiding stick, through the setting of the small ultrasonic radar cooperating with the stick body, the surrounding obstacles can be detected, when the stick body is too close to the obstacle, the small ultrasonic radar sends the signal to the STM32 singlechip, and the signal is converted into the electric signal through the series conversion, stimulates the two PVCG film circular flexible drivers to contract and reminds the blind person to avoid, through the setting of the light sensing lamp, the surrounding ambient light intensity can be sensed, when the surrounding light is dark, the light sensing lamp automatically lights up, reminds the passerby of the position of the blind person, and guarantees the safety of the blind person when going out. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 The light sensing lamp three-dimensional structure schematic view of the novel blind guiding stick based on tactile feedback is provided for the present application.

[0018] Figure 2 The stick body cross-sectional three-dimensional structure schematic view of the novel blind guiding stick based on tactile feedback is provided for the present application.

[0019] Figure 3 The sliding ring three-dimensional structure schematic view of the novel blind guiding stick based on tactile feedback is provided for the present application.

[0020] Figure 4The utility model provides a kind of based on tactile feedback's novel guide stick's mounting seat three-dimensional structure schematic diagram for the utility model provides the operation flow chart of novel guide stick based on tactile feedback.

[0021] Figure 5 The utility model provides a kind of based on tactile feedback's novel guide stick's operation flow chart for the utility model provides the mounting seat three-dimensional structure schematic diagram of novel guide stick based on tactile feedback.

[0022] In the drawing: 1, pole body;2, cavity;3, battery;4, fixed frame;5, STM32 single-chip microcomputer;6, digital-analog converter;7, bluetooth module;8, light response lamp;9, small ultrasonic radar;10, positioning sleeve;11, sliding ring;12, rubber plate;13, mounting seat;14, PVCG film circular flexible driver;15, connecting plate;16, wear block;17, reinforcing ring;18, charging head;19, first wiring hole;20, second wiring hole;21, first magnet ring;22, second magnet ring;23, direction mark;24, Braille;25, firm plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the embodiment, and the utility model is further detailedly explained.It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] Please refer to Figures 1 to 5The utility model provides a novel blind guiding stick based on tactile feedback, including the stick body 1, the inside of stick body 1 is provided with cavity 2, the inner bottom wall of cavity 2 is fixedly connected with battery 3, the inner wall of cavity 2 is fixedly connected with fixed frame 4, the inner side wall of fixed frame 4 is fixedly connected with STM32 singlechip 5, digital analog converter 6 and bluetooth module 7 respectively, STM32 singlechip 5 is a kind of singlechip controller that can operate instruction according to write program, the outer surface of stick body 1 is fixedly connected with three light response lamp 8, light response lamp 8 inside is provided with photosensitive module and light-emitting module respectively, the lower part of the outer surface of stick body 1 is fixedly connected with two small ultrasonic radar 9, the inside of two small ultrasonic radar 9 is provided with sound emitting module and ultrasonic ranging module, two small ultrasonic radar 9 are arranged in fan shape, the top of stick body 1 is fixedly connected with positioning sleeve 10, positioning sleeve 10 inside is slidably connected with sliding ring 11, the inside of sliding ring 11 is clamped with two rubber plates 12, two rubber plates 12 mutually close one side is fixedly connected with mounting seat 13, mounting seat 13 is fixedly embedded in the inside of sliding ring 11, the inside of mounting seat 13 is provided with two PVCG film circular flexible driver 14, PVCG film circular flexible driver 14 is a kind of driver made of special artificial muscle material, after the driver receives current signal, can occur unidirectional telescoping, the power end of two PVCG film circular flexible driver 14 is fixedly connected with the side of two rubber plates 12 mutually close, STM32 singlechip 5, digital analog converter 6, bluetooth module 7, three light response lamp 8, two small ultrasonic radar 9 and two PVCG film circular flexible driver 14 are electrically connected with battery 3 through wire, digital analog converter 6, bluetooth module 7, three light response lamp 8, two small ultrasonic radar 9 and two PVCG film circular flexible driver 14 are electrically connected with STM32 singlechip 5 through wire.

[0025] By being provided with bluetooth module 7, can be connected with mobile phone, bluetooth module 7 starts receiving the data of mobile phone navigation simultaneously, STM32 singlechip 5 cooperates digital analog converter 6 and produces electric signal stimulation PVCG film circular flexible driver 14 and contracts, left turn rear driver contracts, right turn front driver contracts, let blind guiding stick realize the navigation function based on tactile feedback, by being provided with small ultrasonic radar 9, can detect surrounding obstacles, and cooperate with the stimulation of two PVCG film circular flexible driver 14 to STM32 singlechip 5 and remind blind person to avoid simultaneously, by being provided with light response lamp 8, can perceive ambient light intensity, when ambient light is dim, light response lamp 8 automatically brightens, reminds the position of passerby blind person.

[0026] Further, the bottom end of the stick body 1 is fixedly connected with a connecting plate 15, and the bottom surface of the connecting plate 15 is fixedly connected with a wear-resistant block 16. The connecting plate 15 and the wear-resistant block 16 can increase the wear resistance of the bottom end of the stick body 1, thereby prolonging the service life of the stick body 1.

[0027] Further, the outer surface of the battery 3 is fixedly connected with three reinforcing rings 17, and the outer surface of each reinforcing ring 17 is fixedly connected with the inner wall of the cavity 2. The reinforcing ring 17 can increase the stability of the battery 3 inside the cavity 2, thereby reducing the influence of external shaking on the battery 3 and ensuring the normal use of the battery 3.

[0028] Further, the outer surface of the stick body 1 is fixedly connected with a charging head 18, and the charging head 18 is electrically connected with the battery 3 through a wire. The charging head 18 can cooperate with the power cord to supplement the electric energy of the battery 3, thereby ensuring the normal charging of the battery 3.

[0029] Further, the upper surface and the bottom surface of the fixing frame 4 are both provided with a first wire hole 19, and the inside of the stick body 1 is provided with a second wire hole 20. The first wire hole 19 cooperates with the second wire hole 20 to ensure that the connecting wire is smoothly arranged inside the fixing frame 4 and the stick body 1.

[0030] Further, the outer surface of the positioning sleeve 10 is fixedly connected with two first magnet rings 21, and the outer surface of the sliding ring 11 is fixedly connected with two second magnet rings 22. The bottom surface of one of the second magnet rings 22 is attracted to the upper surface of one of the first magnet rings 21. The first magnet ring 21 cooperates with the second magnet ring 22 to allow the sliding ring 11 to rotate by 60 degrees inside the positioning sleeve 10. This facilitates the user to switch between straight holding and inclined holding postures. At the same time, the magnetic attraction of the first magnet ring 21 and the second magnet ring 22 can limit the position of the sliding ring 11 after rotation adjustment, so that the user's palm will not be separated from the PVCG thin film circular flexible driver 14 whether the user is straight holding or inclined holding.

[0031] Further, the outer surface of the sliding ring 11 is fixedly connected with a direction mark 23, and the upper surface of the direction mark 23 is fixedly connected with a Braille 24. The direction mark 23 cooperates with the forward Braille 24 to facilitate the user to distinguish the forward direction of the stick body 1, thereby ensuring the accuracy of subsequent navigation.

[0032] Further, the inner wall of the mounting seat 13 is fixedly connected with a stabilizing plate 25, and the front surface and the back surface of the stabilizing plate 25 are respectively fixedly connected with the mutually close sides of the two PVCG thin film circular flexible drivers 14. The stabilizing plate 25 can stabilize the position of the PVCG thin film circular flexible driver 14 inside the mounting seat 13, thereby improving the use stability of the PVCG thin film circular flexible driver 14.

[0033] Working principle: in use, the user holds the sliding ring 11 and adjusts the correct orientation of the cane body 1 by the forward Braille 24 and the direction mark 23, at this time the Bluetooth module 7 can be connected with the mobile phone, the user inputs the travel destination on the mobile phone and starts walking, the Bluetooth module 7 starts receiving the data of the mobile phone navigation at the same time, then the STM32 single-chip microcomputer 5 decodes and processes the digital data, converts the control signal into a pulse waveform suitable for electric stimulation, then the digital-to-analog converter 6 converts the digital signal into an analog electric signal, the electric signal stimulates the PVCG thin film circular flexible driver 14 and the rubber plate 12 to contract, when left turning is needed, the rear side PVCG thin film circular flexible driver 14 is stimulated by the electric signal to contract, when right turning is needed, the front side PVCG thin film circular flexible driver 14 is stimulated by the electric signal to contract, the user can know whether left or right turning is needed by feeling whether the two different position PVCG thin film circular flexible drivers 14 and the rubber plate 12 move, so that the blind guiding cane realizes the navigation function based on tactile feedback, can better guide the blind person to go to the destination according to the route, and accurately and clearly guide the blind person to turn left and right, effectively increases the guiding effect of the blind guiding cane, the small ultrasonic radar 9 cooperates with the cane body 1 to detect the surrounding obstacles, when the cane body 1 is too close to the obstacles, the small ultrasonic radar 9 sends a signal to the STM32 single-chip microcomputer 5, and the signal is converted into an electric signal through a series of conversions, so that the two PVCG thin film circular flexible drivers 14 contract at the same time, and the sounding module in the small ultrasonic radar 9 emits a warning, which can better remind the blind person to avoid in time, the light sensing lamp 8 cooperates with the photosensitive module inside the light sensing lamp 8 to sense the ambient light intensity, when the ambient light is dark, the photosensitive module cooperates with the light emitting module to automatically turn on the light sensing lamp 8, and the sounding module also emits a reminding sound different from the distance measurement of the small ultrasonic radar 9, which can well remind passers-by of the position of the blind person and further ensure the travel safety of the blind person.

[0034] In the description of the utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for illustrative description, and cannot be understood as a limitation on the patent, for ordinary skilled persons in the art, the specific meaning of the above terms can be understood according to the specific situation.

Claims

1. A novel guide cane based on tactile feedback, characterized in that, The device includes a cane body (1), with a cavity (2) inside. A battery (3) is fixedly connected to the bottom wall of the cavity (2), and a mounting bracket (4) is fixedly connected to the inner wall of the cavity (2). An STM32 microcontroller (5), a digital-to-analog converter (6), and a Bluetooth module (7) are fixedly connected to the inner side wall of the mounting bracket (4). Three light-sensing lamps (8) are fixedly connected to the outer surface of the cane body (1). Two small ultrasonic radars (9) are fixedly connected to the lower part of the outer surface of the cane body (1). The two small ultrasonic radars (9) are arranged in a fan shape. A positioning sleeve (10) is fixedly connected to the top of the cane body (1). A sliding ring (11) is slidably connected inside the positioning sleeve (10). Two rubber plates (12) are snapped into the inside of the sliding ring (11). The two rubber plates (12) are fixed together on their adjacent sides. A mounting base (13) is connected to the inside of a sliding ring (11). The mounting base (13) is fixedly embedded inside the sliding ring (11). Two PVCG thin film circular flexible actuators (14) are provided inside the mounting base (13). The power ends of the two PVCG thin film circular flexible actuators (14) are fixedly connected to the sides of the two rubber plates (12) that are close to each other. The STM32 microcontroller (5), digital-to-analog converter (6), Bluetooth module (7), three light sensors (8), two small ultrasonic radars (9) and two PVCG thin film circular flexible actuators (14) are all electrically connected to the battery (3) through wires. The digital-to-analog converter (6), Bluetooth module (7), three light sensors (8), two small ultrasonic radars (9) and two PVCG thin film circular flexible actuators (14) are all electrically connected to the STM32 microcontroller (5) through wires.

2. The novel guide cane based on tactile feedback according to claim 1, characterized in that, A connecting plate (15) is fixedly connected to the bottom end of the rod (1), and a wear-resistant block (16) is fixedly connected to the bottom surface of the connecting plate (15).

3. A novel guide cane based on tactile feedback according to claim 1, characterized in that, The outer surface of the battery (3) is fixedly connected with three reinforcing rings (17), and the outer surface of each reinforcing ring (17) is fixedly connected to the inner wall of the cavity (2).

4. A novel guide cane based on tactile feedback according to claim 1, characterized in that, A charging head (18) is fixedly connected to the outer surface of the cane (1), and the charging head (18) is electrically connected to the battery (3) through a wire.

5. A novel guide cane based on tactile feedback according to claim 1, characterized in that, The upper and lower surfaces of the fixing frame (4) are provided with a first wiring hole (19), and the inside of the cane body (1) is provided with a second wiring hole (20).

6. A novel guide cane based on tactile feedback according to claim 1, characterized in that, Two first magnet rings (21) are fixedly connected to the outer surface of the positioning sleeve (10), and two second magnet rings (22) are fixedly connected to the outer surface of the sliding ring (11). The bottom surface of one of the second magnet rings (22) is attracted to the upper surface of one of the first magnet rings (21).

7. A novel guide cane based on tactile feedback according to claim 1, characterized in that, The outer surface of the sliding ring (11) is fixedly connected with a direction mark (23), and the upper surface of the direction mark (23) is fixedly connected with Braille (24).

8. A novel guide cane based on tactile feedback according to claim 1, characterized in that, The inner wall of the mounting base (13) is fixedly connected to a stabilizing plate (25), and the two PVCG film circular flexible actuators (14) are fixedly connected to the front and back sides of the stabilizing plate (25) respectively on their sides that are close to each other.

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