CN212439107U

CN212439107U - Head control intelligent wheelchair

Info

Publication number: CN212439107U
Application number: CN202020352564.2U
Authority: CN
Inventors: 王北一; 欧阳湛锋
Original assignee: Guangdong Vocational and Technical College
Current assignee: Guangdong Vocational and Technical College
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2021-02-02
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a head-controlled intelligent wheelchair, which comprises a wheelchair seat, a front wheel device and a rear wheel device; the upper part of the wheelchair seat is provided with a headrest; the rear wheel device comprises a left rear wheel, a right rear wheel, a left motor and a right motor, wherein the left motor and the right motor respectively drive the left rear wheel and the right rear wheel to rotate; the headrest is provided with a headrest cavity, the upper side, the lower side, the left side and the right side of the headrest cavity are respectively provided with an upper pressure sensor and a lower pressure sensor, and the upper pressure sensor and the lower pressure sensor are electrically connected with the left motor and the right motor; the middle part of the headrest is provided with a button for controlling the on-off of all the sensors; the wheelchair can be controlled by the head, is good in portability and low in signal processing complexity, and can detect the live posture of a human body in real time.

Description

Head control intelligent wheelchair

Technical Field

The utility model relates to a wheelchair, in particular to head control intelligence wheelchair.

Background

At present, there are two kinds of human-computer interaction techniques that can realize head-motion control: a human-computer interaction technology based on visual identification, a human-computer interaction technology based on a sensor and the like. However, the human-computer interaction technology based on visual recognition not only needs a camera to capture the motion of a person, but also requires that no barrier exists between the captured person and the camera, and the captured person and the camera are limited by scenes, and requires that a processor has enough rapid video processing capability when in use; the human-computer interaction technology based on the sensor does not depend on carrying other additional equipment, is relatively less influenced by the external environment, is not limited by space, has good portability and low signal processing complexity, and can detect the live gesture of the human body in real time. Therefore, the interaction mode is increasingly emphasized and is called as the interaction technology capable of understanding people.

The intelligent wheelchair is one of key projects of the national rehabilitation project and is also an important application scene of a human-computer interaction technology. This demand that not only can satisfy mild disabled person, also can serve those the disabled seriously and some acroparalysis are even high-order paraplegic crowd well, very big expansion the benefited group of intelligent wheelchair, the utility model discloses a human-computer interaction of head-moving control is realized to the background based on the identification model of sensor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming and not enough, provide one kind can be through the head full control wheelchair go forward, retreat or the intelligent wheelchair that turns to.

The purpose of the utility model is realized through the following technical scheme: a head control intelligent wheelchair comprises a wheelchair seat, a front wheel device and a rear wheel device; the upper part of the wheelchair seat is provided with a headrest; the rear wheel device comprises a left rear wheel, a right rear wheel, a left motor and a right motor, wherein the left motor and the right motor respectively drive the left rear wheel and the right rear wheel to rotate; the headrest is provided with a headrest cavity, the upper side and the lower side of the headrest cavity are respectively provided with an upper pressure sensor and a lower pressure sensor, the upper pressure sensor and the lower pressure sensor are electrically connected with the left motor and the right motor, and the left pressure sensor and the right pressure sensor are respectively electrically connected with the steering motor; the middle part of the headrest is provided with a button for controlling the on-off of all the sensors.

In a preferred embodiment, the headrest is provided with an electric shield at the top of the headrest cavity.

In a preferred embodiment, the rear part of the wheelchair seat is provided with a weight loss sensor.

In a preferred embodiment, the wheelchair seat is provided with a foot pedal which can be lifted.

As a preferred embodiment, the front wheel device comprises a left front wheel, a left connecting rod, a steering motor, a right connecting rod and a right front wheel which are connected in sequence, and the steering motor drives the left front wheel and the right front wheel to steer simultaneously; and the left pressure sensor and the right pressure sensor are respectively and electrically connected with the steering motor.

As a preferred embodiment, the headrest cavity is internally provided with annular dense breathable cotton wrapped outside the left pressure sensor and the right pressure sensor.

As a preferred embodiment, the wheelchair further comprises braking devices in signal connection with button buttons, and the braking devices are arranged on the left rear wheel and the right rear wheel. The brake device can adopt the existing electric brake device.

The utility model discloses for prior art have following advantage and effect:

1. the intelligent wheelchair controls the steering motor, the left motor and the right motor through the four sensors respectively through the upward pitching, the downward pitching and the rotating of the head, the steering motor controls the rotation of the left front wheel and the right front wheel to complete steering, the left motor and the right motor control the rotation of the left rear wheel and the right rear wheel to complete the advancing or the retreating of the wheelchair, and the intelligent wheelchair is very suitable for users with limited motor functions.

2. The utility model discloses a button accomplishes the control to all sensors, can in time prevent the maloperation, improves the security performance.

3. The utility model discloses additionally set up arresting gear, further improved the security.

Drawings

Fig. 1 is a perspective view of a smart wheelchair.

Fig. 2 is a bottom view of the smart wheelchair.

Fig. 3 is a perspective view of the headrest.

Fig. 4 is a cross-sectional view of the headrest.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

Example one

Referring to fig. 1 to 4, a head-controlled intelligent wheelchair includes a wheelchair seat 1, a front wheel device, and a rear wheel device; the upper portion of wheelchair seat 1 is equipped with headrest 2 for the head is supported, the front wheel device is including the left front wheel 3, left connecting rod 4, steering motor 5, right connecting rod 6 and the right front wheel 7 that connect gradually. The steering motor 5 controls the steering of the left front wheel 3 through the left connecting rod 4, controls the steering of the right front wheel 7 through the right connecting rod 6, the steering of the left front wheel and the steering of the right front wheel are carried out in the same time and the same direction, the rear wheel device comprises a left rear wheel 8, a right rear wheel 9, a left motor 10 and a right motor 11 which respectively drive the left rear wheel 8 and the right rear wheel 9 to rotate, the left motor 10 controls the forward movement and the backward movement of the left rear wheel 8, and the right motor 11 controls the forward movement and the backward movement of the right rear wheel 9. The headrest 2 is provided with a headrest cavity 12, in order to control the wheelchair to move forward and backward, the upper side, the lower side, the left side and the right side of the headrest cavity 12 are respectively provided with an upper pressure sensor 13, a lower pressure sensor 14, a left pressure sensor 15 and a right pressure sensor 16, the upper pressure sensor 13 and the lower pressure sensor 14 are electrically connected with the left motor 10 and the right motor 11, when the back of the head of the disabled person enters the headrest cavity 12, the back of the head tilts upwards to touch the lower pressure sensor 14, the left motor 10 and the right motor 11 simultaneously receive signals of the pressure sensors 14 to synchronously rotate in the same direction, the wheelchair moves forwards, when the head lowers downwards, the skull touches the upper pressure sensor 13, the left motor and the right motor rotate in opposite directions, and the wheelchair moves backwards; the left pressure sensor 15 and the right pressure sensor 16 are respectively electrically connected with the steering motor 5, when the head rotates leftwards, the rear part of the side face can touch the left pressure sensor 15, the steering motor 5 is a double-acting motor, the steering motor 5 enables the left front wheel 3 to rotate relative to the wheelchair seat 1 through the left connecting rod 4 and enables the right front wheel 7 to rotate through the right connecting rod 6, the wheelchair can rotate leftwards, when the head rotates rightwards, the rear part of the side face can touch the right pressure sensor 16, the steering motor 5 controls the left front wheel 3 and the right front wheel 7 to rotate rightwards, and the wheelchair can rotate rightwards; on the basis, in order to prevent the head from being accidentally twisted when a person wants to be static, the button 17 for controlling the on-off of all the sensors is arranged in the middle of the headrest 2, if the wheelchair needs to advance, retreat or turn, the button 17 needs to be pressed backwards by the back of the head, the sensors can act, the wheelchair can move, otherwise, the button 17 is pressed again, and all the sensors stop being switched on after the button is reset.

In order to increase the comfort of the whole wheelchair, the headrest cavity is internally provided with the annular dense breathable cotton wrapped outside the left pressure sensor and the right pressure sensor, so that the head of a person can feel soft and comfortable when leaning into the headrest cavity 12.

When people need to sleep, in order to prevent light from irradiating eyes, the headrest 2 is provided with an electric shield 18 at the top of the headrest cavity, and the eyes and the external light are shielded when the electric shield 18 extends out.

In order to detect the running condition of the wheelchair and provide a guard with a real-time state for monitoring the disabled person and prevent the wheelchair from falling down and being assisted by an unmanned person, the rear part of the wheelchair seat 1 is provided with a weightlessness sensor 19, the weightlessness sensor 19 can sense the loss of the gravity center, and a signal can be sent to the outside through a buzzer.

In order to increase the comfort of the whole wheelchair and cater to people with different heights, the wheelchair seat 1 is provided with a pedal plate 20, the pedal plate 20 is connected with an output shaft of an electric actuator 21, and the electric actuator 21 can control the lifting of the pedal plate 20.

The wheelchair may further comprise braking devices in signal connection with the button buttons 17, the braking devices being provided on the left and right rear wheels. The brake device can adopt the existing electric brake device.

Example two

The present embodiment is different from the first embodiment only in that the present embodiment includes only the upper pressure sensor and the lower pressure sensor, and only the forward and backward movement of the wheelchair can be controlled.

EXAMPLE III

The present embodiment differs from the first embodiment only in that the wheelchair further comprises braking devices in signal connection with the button buttons 17, which are provided on the left and right

rear wheels

8, 9. The brake device can adopt the existing electric brake device. Realizing one-key braking of the button 17.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. A head control intelligent wheelchair comprises a wheelchair seat, a front wheel device and a rear wheel device, wherein a headrest is arranged at the upper part of the wheelchair seat; the rear wheel device comprises a left rear wheel, a right rear wheel, a left motor and a right motor, wherein the left motor and the right motor respectively drive the left rear wheel and the right rear wheel to rotate; the headrest is provided with a headrest cavity, the upper side and the lower side of the headrest cavity are respectively provided with an upper pressure sensor and a lower pressure sensor, the upper pressure sensor and the lower pressure sensor are electrically connected with a left motor and a right motor, and the middle part of the headrest is provided with a button for controlling the on-off of all the sensors.

2. The head-controlled intelligent wheelchair as claimed in claim 1, wherein the headrest is provided with an electric shield at the top of the headrest cavity.

3. The head-controlled smart wheelchair of claim 1 wherein a weight loss sensor is provided at the rear of the seat.

4. The head-controlled smart wheelchair of claim 1 wherein the wheelchair seat is provided with a liftable foot pedal.

5. The head-controlled intelligent wheelchair as claimed in claim 1, wherein the front wheel device comprises a left front wheel, a left connecting rod, a steering motor, a right connecting rod and a right front wheel which are connected in sequence, and the steering motor drives the left front wheel and the right front wheel to steer simultaneously; the left pressure sensor and the right pressure sensor are respectively and electrically connected with the steering motor.

6. The head-controlled intelligent wheelchair as claimed in claim 5, wherein the headrest cavity is internally provided with annular dense breathable cotton wrapped outside the left and right pressure sensors.

7. The head-controlled intelligent wheelchair as claimed in any one of claims 1 to 6, further comprising braking devices in signal connection with button buttons, the braking devices being provided on the left and right rear wheels.