CN210673726U

CN210673726U - Intelligent blind guiding crutch

Info

Publication number: CN210673726U
Application number: CN201822194676.5U
Authority: CN
Inventors: 汪紫涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2020-06-05
Anticipated expiration: 2028-12-25

Abstract

The utility model discloses a blind walking stick 100 is led to intelligence, it includes: the intelligent blind guiding crutch further comprises a hinge four-bar mechanism 10 arranged inside the crutch body 5, a sensor 3 used for detecting obstacles and an alarm processing system 2 electrically connected with the sensor; the four-bar linkage 10 comprises an upper rod body 10a, a lower rod body 10b, a left rod body 10c and a right rod body 10d which are mutually hinged into a parallelogram; the left rod body 10c or the right rod body 10d is fixedly arranged on the crutch body 5, and the sensor 3 is arranged on the upper rod body 10 a; lower body of rod 10b is located blind walking stick 100 is led to intelligence's end and parallel with ground, the utility model discloses be favorable to making sensor 3 be on a parallel with ground orientation always and carry out the barrier and detect.

Description

Intelligent blind guiding crutch

[ technical field ]

The utility model relates to a blind walking stick is led to intelligence especially relates to a blind walking stick is led to intelligence of utensil barrier detection function.

[ background art ]

A blind guiding crutch is used for guiding the blind on the road and is generally provided with an obstacle detection sensor and an alarm system.

Please refer to chinese patent publication No. CN103637901A, which discloses a blind guiding crutch based on ultrasonic ranging, comprising a crutch rod, an ultrasonic ranging module, a single chip microcomputer and an alarm circuit, wherein the ultrasonic ranging module, the single chip microcomputer and the alarm circuit are all fixed on the crutch rod, the ultrasonic ranging module is fixed on the front part of the crutch rod and is 160mm-220mm away from the lower end of the crutch rod, and a component for identifying the direction is arranged at the top of the upper end of the crutch rod; the signal end of the ultrasonic ranging module is connected with the distance detection signal end of the single chip microcomputer, and the alarm signal output end of the single chip microcomputer is connected with the alarm control signal input end of the alarm circuit. The invention is suitable for the blind to remind the passerby and the blind when the blind walks.

However, the ultrasonic ranging module of the blind guiding crutch is fixed on the crutch rod, and the structure has great defects, for example, the detection direction of the ultrasonic ranging module is inclined to the sky or the ground due to different heights of the blind and different habits of using the inclination angle of the blind guiding crutch, so that the front obstacle cannot be detected.

Thus, there is a need for improvements to existing intelligent blind-guiding crutches such that the detection module performs obstacle detection parallel to the ground towards the forward direction.

[ contents of utility model ]

In order to solve the problem, the utility model provides an intelligence leads blind walking stick with accurate detection barrier.

In order to solve the technical problem, the utility model adopts the following technical scheme: an intelligent blind guiding crutch 100 comprises: the intelligent blind guiding crutch further comprises a hinge four-bar mechanism 10 arranged inside the crutch body 5, a sensor 3 used for detecting obstacles and an alarm processing system 2 electrically connected with the sensor; the four-bar mechanism 10 comprises an upper bar body 10a, a lower bar body 10b, a left bar body 10c and a right bar body 10d which are hinged with each other; the left rod body 10c or the right rod body 10d is fixedly arranged on the crutch body 5, the left rod body 10c, the right rod body 10d, the upper rod body 10a and the lower rod body 10b form a movable parallelogram structure, and the sensor 3 is arranged on the upper rod body 10 a; the lower rod body 10b is positioned at the tail end of the intelligent blind guiding crutch 100 and is parallel to the ground.

The further improvement scheme is as follows: the left rod body 10c is fixedly arranged on the crutch body 5, at least one torsion spring 6 is fixedly arranged in the crutch body 5, one end of the torsion spring 6 abuts against the inner wall of the crutch body 5 or the left rod body 10c, and the other end abuts against the lower rod body 10 b.

The further improvement scheme is as follows: the tail end of the crutch body 5 is provided with a boss 5a, the boss 5a and the crutch body 5 form an angle of 90-120 degrees, and the hinge connection point of the lower rod body 10b and the left rod body 10c is fixed at the boss 5 a.

The further improvement scheme is as follows: the lower rod body 10b is provided with an elastic pad 4.

The further improvement scheme is as follows: the length of the left rod body is 20-30 cm.

The further improvement scheme is as follows: the crutch body 5 is also provided with a hole 5b, the upper rod body 10a protrudes from the hole 5b, and the sensor 3 is fixed on the protruding part of the upper rod body 10 a.

The further improvement scheme is as follows: when the sensor 3 detects an obstacle signal for the first time, the alarm processing system 2 stores the signal, and when the sensor 3 detects the obstacle signal again after 2 to 10 seconds after the crutch body 5 does not move, the alarm processing system sends an alarm signal.

The further improvement scheme is as follows: the sensor 3 is a distance sensor, and the alarm processing system 2 receives a feedback signal of the sensor 3 and calculates the distance between the sensor and an obstacle.

The further improvement scheme is as follows: alarm processing system 2 has voice prompt device 4, voice prompt device 4 is used for broadcasting the barrier apart from user's distance.

Compared with the prior art, the blind persons with different heights and different walking stick inclination angles can use the intelligent blind guiding walking stick, the detection direction of the sensor is always parallel to the ground under the driving of the four-bar mechanism 10, so that the stability and reliability of the sensor obstacle detection are greatly improved, and the obstacle state is accurately judged; in addition the utility model discloses a twice signal detection mode still has the beneficial function of unnecessarily reporting to the police for the blind person shielding.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of the intelligent blind guiding crutch of the present invention;

fig. 2 is a schematic view of the four-bar mechanism of the present invention;

FIG. 3 is a partial view of the intelligent blind guiding crutch of the present invention;

FIG. 4 is a view of the working principle of the intelligent blind guiding crutch of the present invention;

the meaning of the reference symbols in the figures:

100. intelligent blind guiding crutch, 1, a handle, 2, a switch, 3, a sensor, 4, an elastic pad, 5, a crutch body, 5a, a boss, 5b, a hole, 6, a torsion spring, 10, a four-bar mechanism, 10a, an upper rod body, 10b, a lower rod body, 10c, a left rod body, 10d, a right rod body, 20, a barrier

[ detailed description of the invention ]

Referring to fig. 1, an intelligent blind guiding crutch 100 includes: the walking stick comprises a handle 1 and a walking stick body 5, wherein a sensor 3 for detecting obstacles and an alarm processing system 2 electrically connected with the sensor are arranged in the walking stick body 5, and a switch 2 is arranged on the handle 1. Before the blind person is ready to walk, the switch 2 is turned on, the sensor 3 detects the front obstacle in the process of the blind person walking, and the alarm system 2 gives an alarm when receiving an obstacle signal that the blind person cannot cross.

Referring to fig. 2 and 3, the intelligent blind guiding crutch 100 further includes a four-bar linkage 10 disposed inside the crutch body (5), the four-bar linkage 10 includes an upper bar 10a, a lower bar 10b, a left bar 10c and a right bar 10d hinged to each other; the left rod body 10c is fixedly arranged on the crutch body 5, the left rod body 10c, the right rod body 10d, the upper rod body 10a and the lower rod body 10b form a movable parallelogram structure, a hole 5b is further formed in the crutch body 5, the upper rod body 10a protrudes from the hole 5b, and the sensor 3 is fixed on the protruding portion of the upper rod body 10 a. The lower rod body 10b is located at the end of the intelligent blind guiding crutch 100 and is parallel to the ground, and the lower rod body 10b is provided with an elastic pad 4. Of course, in the embodiment of the present invention, the right rod 10d may be fixed to the crutch body 5, and the left rod 10c may move relative to the crutch body 5.

The utility model discloses left body of rod 10 c's among the embodiment length can accord with the height that the blind person can stride across, and what this length was preferred is 5-10cm, left side body of rod 10c set firmly in on the walking stick body 5, a torsional spring 6 sets firmly in this walking stick body 5, the one end butt of this torsional spring 6 in inner wall or the left body of rod 10c of walking stick body 5, other end butt in body of rod 10b down, 5 ends of walking stick body have a boss 5a, boss 5a is 90-120 with walking stick body 5, down body of rod 10b with left side body of rod 10 c's hinge joint point is fixed boss 5a department. The utility model discloses body of rod 10b is by the 6 pre-compaction of torsional spring on boss 5a down in the embodiment to prevent down that body of rod 10b rocks for walking stick body 5.

Referring to fig. 4, the sensor 3 is a distance sensor, and the alarm processing system 2 receives a feedback signal from the sensor 3 and calculates a distance to the obstacle 20. The alarm processing system 2 is provided with a voice prompt device for reporting the distance of the obstacle 20 from the user.

When the sensor 3 detects a signal of the obstacle 20 for the first time, the alarm processing system 2 stores the signal, and when the sensor 3 detects the signal of the obstacle again after 2 to 10 seconds after the crutch body 5 does not move, the alarm processing system sends out an alarm signal. The blind person is at the normal walking in-process, if the object that removes in its the place ahead, for example the pet that removes, car etc. these objects are in the removal state usually to block the road that the blind person moved ahead, consequently the utility model discloses an implementation mode of twice signal detection can effectively reduce the number of times that intelligent blind guiding crutch 100 reported to the police, has shielded unnecessary warning disturbance for the blind person.

Compared with the prior art, the utility model, which arranges the four-bar mechanism 10 in the crutch body 5 and fixes the sensor 3 on the protruding part of the upper rod body 10a, when the blind persons with different heights and different walking stick inclination angles use the intelligent blind guiding crutch 100, the detection direction of the sensor 3 is always parallel to the ground under the drive of the four-bar mechanism 10, thus greatly increasing the stability and reliability of the sensor obstacle detection and accurately judging the obstacle state; in addition the utility model discloses a twice signal detection mode has shielded the unnecessary warning for the blind person.

Claims

1. An intelligent blind-guiding crutch (100), comprising: handle (1) and walking stick body (5), its characterized in that: the intelligent blind-guiding crutch further comprises a hinge four-bar mechanism (10) arranged inside the crutch body (5), a sensor (3) used for detecting obstacles and an alarm processing system (2) electrically connected with the sensor; the hinged four-bar mechanism (10) is provided with an upper bar body (10a), a lower bar body (10b), a left bar body (10c) and a right bar body (10d) which are hinged with each other; the left rod body (10c) or the right rod body (10d) is fixedly arranged on the crutch body (5), the left rod body (10c), the right rod body (10d), the upper rod body (10a) and the lower rod body (10b) form a movable parallelogram structure, and the sensor (3) is arranged on the upper rod body (10 a); the lower rod body (10b) is positioned at the tail end of the intelligent blind guiding crutch (100) and is parallel to the ground.

2. The intelligent blind-guiding crutch (100) of claim 1 wherein: the left rod body (10c) is fixedly arranged on the crutch body (5), at least one torsion spring (6) is fixedly arranged in the crutch body (5), one end of the torsion spring (6) is abutted to the inner wall of the crutch body (5) or the left rod body (10c), and the other end of the torsion spring is abutted to the lower rod body (10 b).

3. The intelligent blind guide crutch (100) of claim 2 wherein: the tail end of the crutch body (5) is provided with a boss (5a), the boss (5a) and the crutch body (5) form an angle of 90-120 degrees, and a hinge connection point of the lower rod body (10b) and the left rod body (10c) is fixed at the boss (5 a).

4. The intelligent blind guide crutch (100) of claim 3 wherein: the lower rod body (10b) is provided with an elastic pad (4).

5. The intelligent blind guide crutch (100) of claim 4 wherein: the length of the left rod body is 20-30 cm.

6. The intelligent blind guide crutch (100) of claim 5 wherein: the crutch body (5) is also provided with a hole (5b), the upper rod body (10a) protrudes from the hole (5b), and the sensor (3) is fixed on the protruding part of the upper rod body (10 a).

7. The intelligent blind guide crutch (100) of any of claims 1 to 6 wherein: when the sensor (3) detects an obstacle signal for the first time, the alarm processing system (2) stores the signal, and when the sensor (3) detects the obstacle signal again after 2 to 10 seconds when the crutch body (5) does not move, the alarm processing system sends an alarm signal.

8. The intelligent blind guide crutch (100) of any of claims 1 to 6 wherein: the sensor (3) is a distance sensor, and the alarm processing system (2) receives a feedback signal of the sensor (3) and calculates the distance between the sensor and an obstacle.

9. The intelligent blind-guiding crutch (100) of claim 8 wherein the alarm processing system (2) is provided with a voice prompting device for reporting the distance of an obstacle from the user.