CN103395398A

CN103395398A - Blind person scooter

Info

Publication number: CN103395398A
Application number: CN2013102719077A
Authority: CN
Inventors: 文杰; 许瑞芳; 李方方; 侯宁
Original assignee: Luoyang Institute of Science and Technology
Current assignee: Luoyang Institute of Science and Technology
Priority date: 2013-07-01
Filing date: 2013-07-01
Publication date: 2013-11-20
Anticipated expiration: 2033-07-01
Also published as: CN103395398B

Abstract

A blind person scooter comprises a power system, a control system and a navigation system, wherein the power system drives a vehicle body to move, and the control system controls the vehicle body to start, stop, turn, speed up and slow down. The navigation system comprises an ultrasonic generator, an ultrasonic receiver, a CPU and a voice prompt system, wherein the ultrasonic generator transmits an ultrasonic signal to the road in front of the vehicle body, the ultrasonic receiver receives an ultrasonic signal reflected from the road in front of the vehicle body, and the voice prompt system is controlled by the CPU. The CPU controls the ultrasonic generator to transmit the ultrasonic signal, judges the front road condition according to the reflected ultrasonic signal received by the ultrasonic receiver and then controls the voice prompt system to broadcast road condition information so that an operator can control the scooter according to the road condition information. According to the blind person scooter, by detecting the front road condition information through ultrasonic waves and informing a user through the voice prompt system, the user can adjust the speed, the driving direction and the like of the scooter, the aim of enabling blind persons to drive vehicles is achieved, the scooter has both the navigation function and the communication function, and the problem that the blind persons can not freely go out is actually solved.

Description

Blind person's scooter

Technical field

The present invention relates to boosted vehicle, the scooter of vehicular field, specifically a kind of blind person's scooter.

Background technology

In actual life, blind person's guide means that adopt of going on a journey often are blind guiding stick or seeing-eye dog, but this does not change the problem of trip inconvenience: blind guiding stick or seeing-eye dog are only the instruments that shows the way that the blind person goes on a journey, can not fundamentally improve the problem that it is difficult that the blind person goes on a journey, the blind person still needs the destination that proceeds on foot, and blind person or the old blind person bad for physique are especially difficult.

Summary of the invention

, for solving the go on a journey problem of difficulty of blind person, the invention provides a kind of blind person's scooter.

The present invention solves the problems of the technologies described above the technical scheme of employing to be: blind person's scooter, comprise the power system that drives body movement and control that car body is realized starting, stops, being turned to, the control system of acceleration and deceleration, also comprise that navigationsystem and keyboard digital are the communication handset of braille, described navigationsystem comprises ultrasonic receiver, the CPU of the ultrasonic signal that reflects to the ultrasonic generator of road surface, car body the place ahead emission ultrasonic signal, reception the place ahead and the speech prompting system that controlled by CPU;

Described CPU is by controlling forwards road surface emission ultrasonic signal and receive the situation of returning to ultrasonic signal according to ultrasonic receiver the place ahead road conditions are judged of ultrasonic generator, then control speech prompting system and play traffic information, make the operator control scooter according to traffic information.

Described navigationsystem, its working process comprises the following steps:

1) CPU control ultrasonic generator is forwards launched ultrasonic signal and is started timing in road surface;

2) ultrasonic receiver often receives the ultrasonic signal that once returns and just passes to impulse singla of CPU, and CPU records the time of origin of each impulse singla, then with the time point that records line successively;

3) CPU is according to step 2) the time point line judge the place ahead road conditions, and this traffic information is passed to the user by speech prompting system:

If CPU does not record any time point, namely ultrasonic receiver does not receive the ultrasonic signal that returns, and represents that road surface, the place ahead is very smooth smooth;

If in the time point line, the time point of a certain section is densely distributed, there is obstacle on the distance of expression correspondence, then CPU calculates the distance of obstacle and car body and exports to speech prompting system according to this time point and hypracoustic speed of propagation;

If the time point line is evenly arranged or approximate evenly arrange, the expression road surface is accessible but uneven, P Passable.

For guaranteeing safety, described power system drives car body and travels with the speed of 0.5m/s-2m/s.

the present invention's principle used is: can reflect when super sonic meets with obstruction, can calculate the distance of obstacle according to its time, because road surface can not be the same smooth of minute surface, therefore there is concavo-convex, these concavo-convex meetings are with the ultrasonic reflections part of going back, these ultrasonic signals that return not only can be determined distance, and can reflect the size of obstacle: general little obstacle, follow-up super sonic still can return, but larger obstacle can all stop the super sonic of emission it is returned, can judge accordingly whether the place ahead obstacle hinders current.

Beneficial effect: the present invention notifies the user so that the user adjusts speed, travel direction of scooter etc. by ultrasonic fault detection the place ahead traffic information and by speech prompting system, realized that not only the blind person drives to go on a journey, and have navigation feature and communication function concurrently, really solved the problem that it is difficult that the blind person goes on a journey.

Description of drawings

Fig. 1 is the principle schematic of ultrasonic fault detection roadblock of the present invention;

Fig. 2 is navigationsystem hardware connection diagram of the present invention;

Fig. 3 is principle of work diagram of circuit of the present invention;

Reference numeral: 1, CPU, 2, ultrasonic generator, 3, ultrasonic receiver, 4, speech prompting system, 5, the super sonic of ultrasonic generator emission, 6, obstacle, 7, run into the super sonic that obstacle returns.

The specific embodiment

As shown in the figure, blind person's scooter, comprise the power system that drives body movement and control that car body is realized starting, stops, being turned to, the control system of acceleration and deceleration, also comprise that navigationsystem and keyboard digital are the communication handset of braille, described navigationsystem comprises ultrasonic receiver 3, the CPU1 of the ultrasonic signal that reflects to the ultrasonic generator 2 of road surface, car body the place ahead emission ultrasonic signal, reception the place ahead and the speech prompting system 4 that controlled by CPU1;

Described CPU1 is by controlling forwards road surface emission ultrasonic signal and receive the situation of returning to ultrasonic signal according to ultrasonic receiver 3 the place ahead road conditions are judged of ultrasonic generator 2, then control speech prompting system 4 and play traffic information, make the operator control scooter according to traffic information.

Described navigationsystem, its working process comprises the following steps:

1) CPU1 control ultrasonic generator 2 is forwards launched ultrasonic signal and is started timing in road surface;

2) ultrasonic receiver 3 often receives the ultrasonic signal that once returns and just passes to impulse singla of CPU1, and CPU1 records the time of origin of each impulse singla, then with the time point that records line successively;

3) CPU1 is according to step 2) the time point line judge the place ahead road conditions, and this traffic information is passed to the user by speech prompting system 4:

If CPU1 does not record any time point, namely ultrasonic receiver 3 does not receive the ultrasonic signal that returns, and represents that road surface, the place ahead is very smooth smooth;

If in the time point line, the time point of a certain section is densely distributed, there is obstacle on the distance of expression correspondence, then CPU1 calculates the distance of obstacle and car body and exports to speech prompting system 4 according to this time point and hypracoustic speed of propagation;

Described power system drives car body and travels with the speed of 0.5m/s-2m/s, to guarantee that the operator has the sufficient time to operate scooter and stops, turning to.

Described keyboard digital is the communication handset of braille, is convenient to the blind person and calls and seek help or with the household, link up.

In the present invention, at first edit in timing program and sounding program and storage and CPU1, then CPU1 be connected with speech prompting system 4, speech prompting system 4 can be loud speaker with and the circuit and the power supply that attach, or other possesses the system of corresponding function.

Described ultrasonic generator 2, to road surface, car body the place ahead emission ultrasonic signal, can be continuous emission, can be also certain interval of time emission afterwards, for preventing disturbing, preferably at interval of the 1-2s emission once.

3 of described ultrasonic receivers just transmit an impulse singla that is used for timing to CPU1 when receiving the ultrasonic signal that car body the place ahead (with the wide region such as car body or in less than the width over sides of car body scope) feeds back.

The GPS location can be set on described scooter, so that accurately determine its position.

In the present invention, when establishment sounding program, except setting " the place ahead X rice has obstacle to detour ", can set again " the place ahead road bump please slow down ", it distributes roughly even corresponding to the time point in the time point line, can be according to testing the minimum interval of then setting between the time point that can pass through.

Claims

1. blind person's scooter, comprise the power system that drives body movement and control that car body is realized starting, stops, being turned to, the control system of acceleration and deceleration, it is characterized in that: also comprise that navigationsystem and keyboard digital are the communication handset of braille, described navigationsystem comprises to the ultrasonic generator (2) of road surface, car body the place ahead emission ultrasonic signal, receive ultrasonic receiver (3), the CPU(1 of the ultrasonic signal that the place ahead reflects) and be subjected to CPU(1) speech prompting system (4) controlled;

Described CPU(1) by controlling forwards road surface emission ultrasonic signal and receive according to ultrasonic receiver (3) situation of returning to ultrasonic signal the place ahead road conditions are judged of ultrasonic generator (2), then control speech prompting system (4) and play traffic information, make the operator control scooter according to traffic information.

2. blind person's scooter according to claim 1, is characterized in that, described navigationsystem, and its working process comprises the following steps:

1) CPU(1) controlling ultrasonic generator (2) forwards launches ultrasonic signal and starts timing in road surface;

2) ultrasonic receiver (3) often receives the ultrasonic signal that once returns and just passes to CPU(1) impulse singla, CPU(1) record the time of origin of each impulse singla, then with the time point that records line successively;

3) CPU(1) according to step 2) the time point line judge the place ahead road conditions, and this traffic information is passed to the user by speech prompting system (4):

If CPU(1) do not record any time point, namely ultrasonic receiver (3) does not receive the ultrasonic signal that returns, and represents that road surface, the place ahead is very smooth smooth;

, if in the time point line, the time point of a certain section is densely distributed, have obstacle on the distance of expression correspondence, then CPU(1) calculate the distance of obstacle and car body and export to speech prompting system (4) according to this time point and hypracoustic speed of propagation;

3. blind person's scooter according to claim 1 is characterized in that: described power system drives car body and travels with the speed of 0.5m/s-2m/s.