Infrared sensor based electronic navigator and control method thereof

A kind of infrared sensor and sensor technology, applied in the direction of the appliance that helps people walk, physical therapy, etc., can solve the problems of troublesome use, achieve the effect of low price, assist the blind to walk, and improve the walking of the blind

Active Publication Date: 2012-08-15
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it is troublesome to use, so in order to better assist the blind to travel, avoid the disadvantages of traditional blind guide sticks, and design a more portable walking aid, we have conducted research on electronic guides

Method used

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  • Infrared sensor based electronic navigator and control method thereof
  • Infrared sensor based electronic navigator and control method thereof
  • Infrared sensor based electronic navigator and control method thereof

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Embodiment Construction

[0064] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0065] figure 1 A structural block diagram of an electronic guidance system based on an infrared sensor is given in an embodiment of the present invention, including a detection module, an AD conversion module, a main control processing module, a crystal oscillator and a phase-locked loop circuit, a voice module, a power management module and buttons module. The detection module is composed of 4 sensors. When the road obstacle information (usually a voltage signal) is collected, the collected voltage signal is sent to the AD conversion module for analog-to-digital conversion, and the main control processing unit receives the converted digital signal. , using the geometric relationship of the four-way sensors to process and analyze the four-way signals, and feedback the results to the user through the voice module, and give the user prompts.

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Abstract

The invention relates to an infrared sensor based electronic navigator and a control method of the infrared sensor based electronic navigator, belonging to the electronic guiding field. The infrared sensor based electronic navigator comprises an analog / digital (A / D) conversion module, a main control processing module, a crystal oscillator and phase-locked loop circuit, a voice module, a power management module and a key module which are sealed in a shell in a unified way; furthermore, the shell is externally provided with a detection module and a circular bayonet used for connecting the detection module. The portable navigator developed by the invention is small in volume, convenient to carry and easy to use; the system is low in price and is suitable for most people with visual impairment; and the system has a voice prompt function, thus being capable of better assisting blind person to walk.

Description

technical field [0001] The invention belongs to the field of electronic guidance, in particular to an electronic guidance instrument based on an infrared sensor and a control method. Background technique [0002] According to the statistics of the national authoritative department, China is the country with the largest number of blind people in the world, with about 5 million people, accounting for 18% of the total number of blind people in the world. There will be many inconveniences in their daily travel. The traditional assistive tool for the blind is the blind guide stick, but since the guide stick can only detect the information of one point on the road surface and requires a high concentration of attention of the blind user during use, it is easy to cause user fatigue. A research institution in Spain used the ultrasonic positioning principle of bats to produce a set of equipment for the blind. The user of the equipment needs to be trained to use the tongue to vibrate,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61H3/06
Inventor 刘纪红王倩倩程新
Owner NORTHEASTERN UNIV
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