Blind guiding device and system for signal control intersection

Abstract

The invention discloses a blind guiding device and system for a signal control intersection. The blind guiding device comprises a positioning module, an environment information acquiring module, a traffic signal acquiring module, an auxiliary information generating module and a delay module. The positioning module is used for acquiring position and orientation information of a user; the environment information acquiring module is used for acquiring pedestrian crossing environment information according to the position and the orientation information of the user; the traffic signal acquiring module is used for acquiring traffic signal information of an intersection according to the position and the orientation information of the user; the traffic signal information comprises a pedestrian phase; the auxiliary information generating module is used for generating a voice prompt message according to the pedestrian crossing environment information and the traffic signal information; and the delay module is used for generating and sending a pedestrian phase delay request in response to the user instruction when the pedestrian phase is in a release phase and the user entering a conflict area cannot reach a non-conflict area before the pedestrian phase is finished. The blind guiding device and system for a signal control intersection in the invention can generate and send the pedestrianphase delay request in response to the user instruction and ensures that a blind man can pass the intersection safely.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation and blind guide, in particular to a blind guide device and system for signal-controlled intersections. Background technique [0002] In terms of crossing the road for blind people, in recent years, some cities in China have added voice prompt devices at intersections, but the voice prompts at intersections only use beeps instead of green lights. The biggest problem with the device is that it cannot effectively solve the problem of blind people passing through traffic lights, because the setting time of green lights is still for normal people to pass through the road, and the walking speed of blind people is generally slower, especially when passing through wider roads. There is also a method of identifying traffic lights through the emission and reception of low-frequency electromagnetic waves, but low-frequency electromagnetic waves are easily attenuated during propagation, and...

AI Technical Summary

Problems solved by technology

[0002] In terms of crossing the road for blind people, in recent years, some cities in China have added voice prompt devices at intersections, but the voice prompts at intersections only use beeps instead of green lights. In addition to the low volume, they are easily drowned by noise and cannot distinguish directions. The biggest problem with the device is that it cannot effectively solve the problem of blind people passing through traffic lights, because the setting time of green lights is still for normal people to pass through the road, and the walking speed of blind people is generally slower, especially when passing through wider roads.

There is also a method of identifying traffic lights through the emission and reception of low-frequency electromagnetic waves, but low-frequency electromagnetic waves are easily attenuated during propagation, and there is a problem of effective receiving range, and the signals at adjacent intersections are easy to interfere with each other, so there are more problems in the implementation of the scheme. many

Although there are relatively advanced blind guide systems based on image recognition, the system is expensive and cannot be afforded by most blind people

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