CN111381544A

CN111381544A - Voice interaction intelligent wheelchair controller

Info

Publication number: CN111381544A
Application number: CN202010219648.3A
Authority: CN
Inventors: 周文军
Original assignee: Nanning College for Vocational Technology
Current assignee: Nanning College for Vocational Technology
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-07-07

Abstract

The invention discloses a voice interaction intelligent wheelchair controller which comprises a voice module, a single chip microcomputer and a motor driving module, wherein the voice module is used for matching a received voice instruction with pre-stored voice instruction data and identifying voice instruction information of a user; the singlechip is coupled with the voice module and used for outputting a control signal according to the recognition result; the motor driving module is coupled with the singlechip and used for receiving the control signal of the singlechip and controlling the movement of the wheelchair. The controller comprises the single chip microcomputer, the voice module and the motor driving module, and the wheelchair can be controlled by voice through the controller, so that the operation is convenient, and the use by a user with inconvenient hand movement is convenient.

Description

Voice interaction intelligent wheelchair controller

Technical Field

The invention relates to a voice interaction intelligent wheelchair controller.

Background

With the increase of the number of people with injuries caused by diseases, disasters, traffic accidents and the like and the increase of the aging progress of the society, the number of old people and disabled people gradually increases. The wheelchair is an important tool for rehabilitation, is not only a walking aid for physically disabled persons and persons with mobility disabilities, but also is more important for the persons to do physical exercises and participate in social activities by means of the wheelchair. The existing wheelchair is generally only used for bearing the old and disabled people. The electric wheelchair is a common wheelchair at present, and a person sitting on the wheelchair can realize the operations of starting, stopping, advancing, retreating and the like of the wheelchair by operating a button or an operating rod on the wheelchair, but to the old and the disabled who have inconvenient hand activities, the operability of the electric wheelchair is greatly limited, and the convenience of the wheelchair is reduced to a certain extent.

Disclosure of Invention

The invention aims to provide a voice interaction intelligent wheelchair controller which is used for realizing the operation of a wheelchair through voice.

In order to solve the technical problems, the invention adopts the following technical scheme:

the voice interaction intelligent wheelchair controller comprises a voice module, a single chip microcomputer and a motor driving module, wherein the voice module is used for matching a received voice instruction with pre-stored voice instruction data and recognizing voice instruction information of a user; the singlechip is coupled with the voice module and used for outputting a control signal according to the recognition result; the motor driving module is coupled with the singlechip and used for receiving the control signal of the singlechip and controlling the movement of the wheelchair.

In addition, the invention also provides the following auxiliary technical scheme:

the voice module includes a SYN7318 voice chip and a microphone and speaker coupled thereto.

The motor driving module comprises a motor driving board, wherein the input end of the motor driving board is coupled with the single chip microcomputer, and the output end of the motor driving board is respectively coupled with a first motor for controlling the left driving wheel to move, a second motor for controlling the right driving wheel to move and a third motor for controlling the wheelchair to lift.

The voice interaction intelligent wheelchair controller further comprises a manual control module, the manual control module is coupled with the single chip microcomputer, and the manual control module comprises four keys used for controlling the wheelchair to move forward, move backward, turn left and turn right.

The voice interaction intelligent wheelchair controller further comprises a health monitoring module, and the health monitoring module comprises a heart rate measuring module and a mobile communication module which are respectively coupled with the single chip microcomputer.

The heart rate measuring module adopts a MAX30100 chip, and the chip is coupled with the singlechip.

The voice interaction intelligent wheelchair controller further comprises a GPS module, and the GPS module is coupled with the single chip microcomputer.

Compared with the prior art, the invention has the advantages that:

the controller comprises the single chip microcomputer, the voice module and the motor driving module, and the wheelchair can be controlled by voice through the controller, so that the operation is convenient, and the use by a user with inconvenient hand movement is convenient.

Drawings

FIG. 1 is a block diagram of a voice-interactive intelligent wheelchair controller.

Fig. 2 is a circuit diagram of a voice interaction intelligent wheelchair controller single-chip microcomputer.

FIG. 3 is a circuit diagram of a voice module of the voice interactive smart wheelchair controller.

FIG. 4 is a circuit diagram of a voice interactive smart wheelchair controller manual control module.

FIG. 5 is a circuit diagram of a voice interactive smart wheelchair controller motor drive module.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, there will now be described in detail, with reference to the accompanying drawings, a non-limiting detailed description of the present invention.

As shown in fig. 1, the voice interaction intelligent wheelchair controller comprises a single chip microcomputer U3, a voice module, a manual control module, a motor driving module, a health monitoring module and a GPS module.

As shown in fig. 2, the model of the single chip microcomputer U3 is ATC8F2K64S4, a clock circuit and a reset circuit are arranged in the single chip microcomputer, the anti-interference capability is strong, and peripheral circuits can be reduced.

As shown in fig. 3, the voice module includes a SYN7318 voice chip U4, and a TX port and an RX port of the SYN7318 voice chip U4 are coupled to a P3.0 port and a P3.1 port of the single chip microcomputer, and are in bidirectional communication with the single chip microcomputer U3. The SYN7318 voice chip U4 is externally connected with a microphone through a microphone interface J5, and the SYN7318 voice chip U4 is externally connected with a loudspeaker through a loudspeaker interface J7. The SYN7318 voice chip U4 recognizes voice information input by the microphone interface J5, sends the voice recognition result to the single chip microcomputer U3 for processing, simultaneously the single chip microcomputer U3 also sends a command to the SYN7318 voice chip U4, and the SYN7318 voice chip U4 outputs prompt voice through an external trumpet J7. The receiving end and the transmitting end of the SYN7318 voice chip U4 are correspondingly connected with the transmitting end and the receiving end of the single chip microcomputer U3 respectively, and the SYN7318 voice chip U4 identifies and processes the received voice command, converts the voice command into a control command of the wheelchair and transmits the control command to the single chip microcomputer.

As shown in fig. 4, the manual control module includes a key S1, a key S2, a key S3, and a key S4 coupled to a P3.2-P3.5 port of the single chip microcomputer U3, a resistor R1, a resistor R2, a resistor R3, and a resistor R4 are respectively coupled between the keys S1 to S4 and the P3.2-P3.5 ports of the single chip microcomputer U3, and the resistor R1, the resistor R2, the resistor R3, and the resistor R4 are pull-up resistors each having a resistance of 10K. The button S1 is used for controlling the wheelchair to move forward, the button S2 is used for controlling the wheelchair to move backward, the button S3 is used for controlling the wheelchair to turn left, and the button S4 is used for controlling the wheelchair to turn right.

As shown in fig. 5, the motor driving module controls the movement of the wheelchair by controlling three motors, a first motor controls the movement of the left driving wheel, a second motor controls the movement of the right driving wheel, and a third motor controls the lifting of the wheelchair. The motor driving module adopts an existing L298N motor driving board J6, ports IN1-IN6 of the L298N motor driving board J6 are respectively coupled with ports P1.2-P1.7 of a single chip microcomputer U3, output ports OUT1-1 and OUT1-2 are coupled with a first motor, output ports OUT2-1 and OUT2-2 are coupled with a second motor, and output ports OUT3-1 and OUT3-2 are coupled with a third motor. The voice module or the manual control module transmits a control signal to the single chip microcomputer U3, the single chip microcomputer U3 processes the signal, the signal is changed into specific different pin high and low levels and then is output to the L298N motor driving board J6, and the L298N motor driving board J6 controls the operation of each path of motor according to the signal. When the logic of P1.2 and P1.3 of the single chip microcomputer U3 is (1, 1) or (0, 0), the first path of motor stops rotating, when the logic is (1, 0), the first path of motor rotates forwards, and when the logic is (0, 1), the first path of motor rotates backwards; when the logic of P1.4 and P1.5 of the single chip microcomputer U3 is (1, 1) or (0, 0), the second path of motor stops rotating, when the logic is (1, 0), the second path of motor rotates forwards, and when the logic is (0, 1), the second path of motor rotates backwards; when the logic of P1.6 and P1.7 of the single chip microcomputer U3 is (1, 1) or (0, 0), the third motor stops rotating, when the logic is (1, 0), the third motor rotates forwards, and when the logic is (0, 1), the third motor rotates backwards.

The functions of forward movement, backward movement, turning and the like of the wheelchair can be realized by the matching of the left and right driving wheels, and the mode of controlling the movement of the wheelchair by the left and right driving wheels is as follows: the motors of the left and right driving wheels rotate forward and keep the same rotating speed at the same time, and the wheelchair moves forward linearly; the motors of the left and right driving wheels rotate reversely at the same time and keep the same rotating speed, and the wheelchair moves backwards; the left driving wheel motor rotates reversely, the right driving wheel motor rotates positively, and the wheelchair moves forward towards the left side under the combined action of the left driving wheel and the right driving wheel, namely turns left; the left driving wheel motor rotates forwards, the right driving wheel motor rotates backwards, and the wheelchair moves forwards towards the right side under the combined action of the left driving wheel and the right driving wheel, namely rotates rightwards.

The health monitoring module comprises a heart rate measuring module and a mobile communication module. The heart rate measuring module is used for measuring the heart rate of a user and comparing the heart rate with a preset threshold value in the single chip microcomputer, if the heart rate exceeds the preset threshold value, alarm information is generated and sent to the mobile terminal through the mobile communication module, and the mobile terminal can be a mobile terminal bound in advance, such as a mobile phone of a parent or a friend of the user, so that the relative can master the physical condition of the user at the first time.

The heart rate measurement module adopts a MAX30100 heart rate blood oxygen sensor, and the MAX30100 heart rate blood oxygen sensor is communicated with a P0.3 port and a P0.2 port of the single chip microcomputer U3. And after receiving the parameters of the MAX30100 heart rate blood oxygen sensor, the singlechip U3 compares the parameters with a preset threshold, and if the physical function parameters exceed the preset threshold, alarm information is generated. The preset threshold value is set as the range value of the normal human body health parameters, wherein the heart rate is normal to be 60-100 times/min; the blood oxygen saturation is normally 95% -99%.

The mobile communication module adopts a 4G data module and is communicated with a P1.1 port and a P1.0 port of the single chip microcomputer U3, the mobile communication module receives the wheelchair state sent by the single chip microcomputer through a serial port and transmits the data to the mobile terminal through a 4G network.

The GPS module is used for detecting the position of the wheelchair, wherein the position of the wheelchair can be sent to the mobile terminal through the mobile communication module. The GPS module is communicated with a port P0.1 and a port P0.0 of the singlechip U3, and the GPS module transmits real-time position information of the wheelchair to the singlechip U3 through the port P0.1 and the port P0.0 of the singlechip U3.

When the user uses the wheelchair, the movement of the wheelchair can be controlled manually, and the movement of the wheelchair can be controlled through voice, so that a convenient control mode is improved for patients with inconvenient hands and feet. The infrared distance measuring sensor can actively detect the barrier and give an alarm. The heart rate monitoring function can enable a user or a relative connected with the heart rate monitoring function through the mobile communication module to know the health state of the user in real time, and the GPS module has a positioning function, so that the relative can know the position of the user conveniently.

Claims

1. Pronunciation mutual intelligent wheelchair controller, its characterized in that includes:

the voice module is used for matching the received voice instruction with pre-stored voice instruction data and identifying the voice instruction information of the user;

the singlechip is coupled with the voice module and used for outputting a control signal according to the recognition result;

and the motor driving module is coupled with the singlechip and used for receiving the control signal of the singlechip and controlling the movement of the wheelchair.

2. The voice interactive smart wheelchair controller of claim 1 wherein the voice module comprises a SYN7318 voice chip and a microphone and speaker coupled thereto.

3. The voice interaction intelligent wheelchair controller of claim 1 wherein the motor drive module comprises a motor drive board, an input end of the motor drive board is coupled to the single chip, and an output end of the motor drive board is coupled to a first motor for controlling the left driving wheel, a second motor for controlling the right driving wheel, and a third motor for controlling the wheelchair to ascend and descend.

4. The voice interaction intelligent wheelchair controller of claim 1 further comprising a manual control module coupled to the single-chip microcomputer, the manual control module comprising four buttons for controlling the wheelchair to move forward, backward, turn left and turn right.

5. The voice-interactive intelligent wheelchair controller of claim 1 further comprising a health monitoring module comprising a heart rate measuring module and a mobile communication module respectively coupled to the single-chip microcomputer.

6. The voice interaction intelligent wheelchair controller of claim 5 wherein the heart rate measuring module employs a MAX30100 chip, which is coupled to a single chip.

7. The voice interaction intelligent wheelchair controller of claim 1 or 5 further comprising a GPS module, the GPS module being coupled to the single-chip microcomputer.