Intelligent blind guiding distance reminding device

Abstract

The invention provides an intelligent blind guiding distance reminding device. An MCU master control unit is connected with an ultrasonic ranging unit, an alarm and vibration reminding unit and an obstacle distance voice reminding unit. The ultrasonic ranging unit performs distance measurement by adopting an ultrasonic echo reflection method, he echo transit time is transmitted to the MCU, the MCUworks out the corresponding distance and converts the distance into text messages, and the obstacle distance voice reminding unit synthesizes the text messages into voice signals to be output. When the obstacle distance is smaller than a set threshold value, alarm and vibration reminding is performed through the alarm and vibration reminding unit. The device is not affected by the surrounding illumination condition, dual warning of voice distance broadcasting and buzzer alarm reminding can be performed on obstacles in the advancing process, obstacles can be timely and effectively avoided through a simple walking stick, and the blind guiding performance is stable. The device is simple in structure, components and elements are small in size, power consumption is lowered, the device can be transplanted into a common walking stick or other devices, the total cost is low, and the good application prospect is achieved.

Description

technical field [0001] The invention relates to an intelligent blind-guiding distance prompt device, which belongs to the technical field of electronic blind-guiding equipment. Background technique [0002] With the continuous advancement of science and technology, more and more smart electronic devices have entered people's lives, bringing great convenience to people's lives. my country has the largest number of blind people in the world, about 8 million visually disabled people, accounting for about 15% of the total number of blind people in the world. In addition, there are many patients with night blindness and amblyopia in our country. These people lack three-dimensional sense, and it is easy to underestimate obstacles when driving at night, leading to adverse consequences. [0003] At present, the field of intelligent blind guides mainly includes intelligent blind guide helmets and crutches. Generally, an infrared sensor is used as a search device to provide voice pr...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing intelligent blind guide equipment relies on the support of a centralized blind guide platform. Each helmet or cane is equivalent to a client, which requires the support of a wireless communication system and equipment such as wireless cameras. The system is complex and expensive;

[0006] 2. The existing acousto-optic prompts are used to remind the relatives or passers-by of the patient, and it is troublesome for the patient to wear;

[0007] 3. When the surrounding environment is dark, the blind-guiding system that relies on the camera may make mistakes or even fail completely

[0008] 4. The existing intelligent guide sticks and helmets can only provide obstacle warnings, but cannot give distance prompts

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