CN214910152U

CN214910152U - Multi-functional intelligent pronunciation guide cane

Info

Publication number: CN214910152U
Application number: CN202120450479.4U
Authority: CN
Inventors: 朱智文; 孙亚男; 郑少鹏; 饶新; 孟卓; 周子航; 李欢欢; 董宇航; 彭成志; 张绍宇; 郑涛
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-11-30
Anticipated expiration: 2031-03-02

Abstract

The utility model discloses a multi-functional intelligent pronunciation guide cane, include: the intelligent water-saving alarm system comprises three ultrasonic modules, three vibration modules, a photosensitive sensor module, a voice recognition module, a distress signal output indicator lamp module, a water level sensor module, a distress key module, an LED warning lamp module, a buzzer, an MPU6050 sensor module and an ISD voice broadcasting module which are connected with a main control chip STC89C 52; the remote response cancellation button module is connected with the auxiliary chip STM32F103C8T6, and the remote response cancellation button module comprises a distress signal input and power supply interface module, a GPS positioning module and a WIFI module. The utility model discloses a blind person's road condition is reminded with the mode of vibrations to possess alarming function, can fix a position the blind person position fast simultaneously, thereby improve the security of noticing the trip of blind person.

Description

Multi-functional intelligent pronunciation guide cane

Technical Field

The utility model relates to a multi-functional intelligent pronunciation guide blind stick.

Background

China has a large number of blind people, about 500 thousands, and is the first in the world. When the blind people go out, the blind people often need to rely on a blind guiding device to guide a path and detect obstacles, and the most common blind guiding device is a blind guiding stick. The traditional blind guiding stick is simple in structure and single in function, the requirement of the blind for going out can not be met for a long time, and when the blind person goes out alone and an accident occurs (such as careless falling), if no other people help around, the blind person and a friend can hardly get rid of the danger alone.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a solve the weak point that above-mentioned prior art exists, provide a multi-functional intelligent pronunciation guide blind stick to can remind the blind person road condition through the mode of pronunciation and vibrations in phase, and possess alarming function, can fix a position the blind person position fast simultaneously, thereby improve the security of noticing the blind person's trip.

The utility model discloses a reach above-mentioned utility model purpose, adopt following technical scheme:

the utility model relates to a multifunctional intelligent voice blind guiding stick, which is characterized in that an ultrasonic module and a vibration module are respectively arranged on the front surface, the left side surface and the right side surface of the blind guiding stick;

the pins P2.0 and P2.1, P2.2 and P2.3, and P2.4 and P2.5 of the main control chip STC89C52 are respectively connected with the ultrasonic modules in three directions and are used for transmitting the obstacle distance information of the blind guiding stick on the front surface and the left and right side surfaces;

the pin P0.4, the pin P0.5 and the pin P0.6 of the main control chip STC89C52 are respectively connected with the vibration modules in three directions and are used for transmitting vibration signals in corresponding directions to remind obstacles in different directions;

a P1.4 pin of the master control chip STC89C52 is connected with the photosensitive sensor module and used for receiving outside illumination intensity information;

the P3.4 pin of the master control chip STC89C52 is connected with the voice recognition module and used for receiving the voice information of the blind and recognizing the voice information;

a P3.3 pin of the master control chip STC89C52 is connected with a distress signal output indicator lamp module and used for controlling the on and off of an indicator lamp according to the distress signal;

a P3.2 pin of the main control chip STC89C52 is connected with the water level sensor module and is used for receiving accumulated water signals around the blind guiding stick;

the P3.7 pin of the master control chip STC89C52 is connected with the distress call key module and used for acquiring a distress call signal;

a pin P1.5 of the master control chip STC89C52 is connected with the LED warning lamp module and is used for controlling the on and off of the LED lamp according to the external illumination intensity information;

a P0.1 pin of the main control chip STC89C52 is connected with the buzzer and used for sending out a prompt tone according to the identified stick searching instruction;

the pin P1.7 and the pin P1.6 of the main control chip STC89C52 are connected with the MPU6050 sensor module and are used for acquiring the pose information of the blind guiding stick and judging whether the triggering condition is met, and if the triggering condition is met, a distress signal is generated;

the pin P1.3, the pin P1.2, the pin P1.1 and the pin P1.0 of the main control chip STC89C52 are connected with an ISD voice broadcasting module and used for broadcasting the water accumulation signal;

the main control chip STC89C52 is connected with the auxiliary chip STM32F103C8T6 through a serial port and is used for signal transmission between the main control chip and the auxiliary chip;

a PB6 pin of the auxiliary chip STM32F103C8T6 is connected with a remote response cancellation key module and used for receiving cancellation alarm information and transmitting the cancellation alarm information to the main control chip STC89C52 so as to cancel the LED lamp and stop the buzzer from working;

a P3.3 pin of the distress signal output indicator lamp module is connected with a PB12 pin of the distress signal input and power supply interface module and is used for transmitting the distress signal;

the PB11 pin and the PB10 pin of the auxiliary chip STM32F103C8T6 are connected with the GPS positioning module and used for receiving position information of the blind;

and the PA2 pin and the PA3 pin of the auxiliary chip STM32F103C8T6 are connected with the WIFI module and are used for uploading the distress signal and the position information to a cloud server so as to be transmitted to a client of an emergency contact person.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses under the prerequisite of having blind stick basic function of leading concurrently, provide a blind stick is led to multi-functional intelligence pronunciation, can fix a position the blind person position in real time through the GPS module to send guardian APP through the high in the clouds with positional information, provide safety guarantee for the blind person goes on a journey.

2. The utility model discloses being furnished with attitude sensor, in case detect the blind person and accord with the characteristic of tumbleing, will send alarm information to guardian hand machine end automatically, the guardian can catch up to the blind person fast according to the positional information that APP provided, help the blind person.

3. The utility model discloses the hardware system contains main control chip STC89C52 and auxiliary chip STM32F103C8T 6; the singlechip is small in size, has good integration level and strong control function, and is strong in reliability. The singlechip has low voltage and low energy consumption when being applied, is the first choice of people in daily life, and can provide convenience for production and research and development.

4. The utility model discloses an ultrasonic ranging mode, response time is very fast, and probe wearing and tearing, pollution etc. do not have the influence to the test result almost, and are with low costs, and the probe is easily installed, and the mechanism of operation is simple and easy, and environmental suitability is good, can work in abominable environment.

Drawings

Fig. 1 is a schematic diagram of the hardware system structure of the present invention.

Detailed Description

In this embodiment, as shown in fig. 1, an ultrasonic module and a vibration module are respectively disposed on the front surface, the left side surface and the right side surface of the multifunctional intelligent voice blind guiding stick;

the main control chip STC89C52 is a CMOS 8-bit microcontroller with low power consumption and high performance, and has an 8K in-system programmable Flash memory. STC89C52 provides a highly flexible, super-efficient solution for many embedded control applications.

The TRIG and ECHO interfaces of the ultrasonic module are respectively connected with two IO ports of a main control chip STC89C52, one IO port is responsible for sending out detection signals, the other IO port is responsible for receiving returned signals, and the distance is calculated according to the time difference and the transmission speed of sound waves in the air and is used for obtaining the obstacle distance information of the blind guiding stick on the front surface and the left and right side surfaces.

The feedback system is mainly realized through a vibration module and a voice module based on a linear motor, the voice broadcasting module is controlled by a singlechip through programming, the vibration modules in three directions are respectively connected with a P0.4 pin, a P0.5 pin and a P0.6 pin of a main control chip STC89C52, the sizes of the pin currents of the singlechip are controlled through a pull-up resistor and a diode, the maximum working current and the minimum working current are only 60mA and 90mA, the feedback system is safe and reliable and is used for transmitting vibration signals in corresponding directions, different positions away from an obstacle are realized, the vibration intensity of the motor is different, the closer to the obstacle, the larger the vibration amplitude is, and the obstacle in different directions is reminded.

The photosensitive sensor module is connected with a P1.4 pin of a main control chip STC89C52, and the photosensitive sensor is used for receiving outside illumination intensity information, so that weather changes or a blind guiding stick automatically lights at night to prompt passersby to avoid, and the blind can go out more safely at night.

The P1.5 pin of the main control chip STC89C52 is connected with the LED warning lamp module and used for controlling the on and off of the LED warning lamp according to the external illumination intensity information transmitted by the photosensitive sensor.

The water level sensor is fixed at the bottom of the blind guiding stick, is connected with a P3.2 pin of the main control chip STC89C52 and is used for receiving ponding signals around the blind guiding stick, and when ponding exists in front of a walking path of a blind person, the ponding signals received by the water level sensor can be transmitted to the main control chip STC89C52, and then corresponding voice information is output through the voice broadcasting module to remind the blind person to pay attention.

The P1.3 pin, the P1.2 pin, the P1.1 pin and the P1.0 pin of the main control chip STC89C52 are connected with the ISD voice broadcast module. The voice circuit adopts a voice chip circuit capable of storing a plurality of sections of pre-recorded voice segments, and can also acquire information such as RTC clock at any time, synthesize the information and then report the information to the playing system, and drive the sound-producing circuit to give out corresponding sound signals for broadcasting the ponding signals;

the voice recognition module is connected with a P3.4 pin of a main control chip STC89C52, the voice circuit is provided with a microphone port and is used for receiving voice information of the blind person, comparing and recognizing the voice information with data stored in a database, converting the voice information into character information in real time, sending the character information to the single chip microcomputer through a serial port, comparing the character information with a control statement agreed in advance by the single chip microcomputer, realizing voice intelligent control and solving the problem that the blind person is difficult to operate.

A P0.1 pin of the main control chip STC89C52 is connected with the buzzer and used for transmitting a blind stick searching instruction identified by the voice identification module to the main control chip so as to drive the buzzer and send out a prompt tone;

the pins P1.7 and P1.6 of the main control chip STC89C52 are connected with an MPU6050 sensor module which converts acceleration data, angular velocity data and angle data of three axes in the action of the blind guiding stick into electronic signals and is used for acquiring pose information of the blind guiding stick and judging whether the triggering condition is met. When the blind person holds the blind person to move, original values of a built-in gyroscope and an accelerometer of the blind guiding stick on x, y and z axes are collected through an attitude sensor attached to a mechanical structure, and then the original data can be directly converted into quaternion data to be output through an embedded motion driving library DMP according to a space vector summation formula, so that the Euler angle is conveniently calculated, and the yaw, roll and pitch are obtained. The built-in DMP is used, code design can be greatly simplified, the MCU does not need to perform an attitude calculation process, and the load of the MCU is greatly reduced, so that more time is provided for processing other events, and the real-time performance of the system is improved.

If the numerical value change in a certain direction of the blind guiding stick is abnormal, the conditions of judging falling and the like are achieved, or a switch under a distress call key module connected with a P3.7 pin of a main control chip STC89C52 is closed, an alarm prompt can be sent, a distress call signal is generated, a distress call signal output indicator lamp connected with a P3.3 pin of a main control chip STC89C52 is enabled to be lightened, and then the signal is transmitted to an auxiliary chip through the P3.3 pin of the distress call signal output module and a PB12 pin of the distress call signal input and power supply interface module, so that a WIFI module and a GPS module are driven.

The main control chip STC89C52 and the auxiliary chip STM32F103C8T6 are connected through serial ports and used for transmitting signals between the main control chip and the auxiliary chip;

the GPS positioning module is a general name of a middle-department microelectronic ATGM336H-5N series module and a high-performance BDS/GNSS full constellation positioning navigation module series with the size of 9.7X10.1, is connected with a PB11 pin and a PB10 pin of an auxiliary chip STM32F103C8T6, and is used for receiving position information of the blind. The series of module products are all based on a middle-science micro fourth-generation low-power-consumption GNSS SOC single chip-AT 6558 and support various satellite navigation systems. AT6558 is a true six-in-one multimode satellite navigation positioning chip, contains 32 tracking channels, can receive GNSS signals of six satellite navigation systems simultaneously, and realizes joint positioning, navigation and time service.

The WIFI module is connected with a PA2 pin and a PA3 pin of an auxiliary chip STM32F103C8T6, and is used as a data transmission device to realize a cloud data processing function and used for uploading a distress signal and user position information acquired at the cloud to a cloud server so as to transmit the information to a client of an emergency contact person, and the mobile phone can check the longitude and latitude of the blind person. After the mobile terminal user receives the alarm information, under the action of a remote response cancellation key module connected with a PB6 pin of an auxiliary chip STM32F103C8T6, the main control chip STC89C52 controls an LED on the blind guiding stick not to flicker, and a buzzer does not sound any more to prompt the blind to send a message.

Claims

1. A multifunctional intelligent voice blind guiding stick is characterized in that an ultrasonic module and a vibration module are respectively arranged on the front surface, the left side surface and the right side surface of the blind guiding stick;