Parametric array traffic sound safety prompting system

Abstract

The invention discloses a parametric array traffic sound safety prompting system comprising a sensor, a micro-processing unit, a voice module, and a parametric array module that are connected successively. The sensor is used for detecting whether a coming vehicle enters an induction range or not. The micro-processing unit is used for receiving detection information sent by the sensor. Voice information is preset at the voice module and the voice module is used for converting voice information selected by the micro-processing unit into a voice signal. The parametric array module is used for converting the voice signal into an ultrasonic modulation signal and transmitting the ultrasonic modulation signal to the air to restore sound production. According to the invention, the sounds are collected on a road or a bridge to reduce the sound interference on other areas, so that the casualty rate is reduced. Moreover, because the sounds have directionality, a designated driver can be commandedthrough partition control, so that the commanding efficiency is improved and thus the casualty rate is further reduced.

Description

technical field [0001] The invention relates to the field of application of parametric array technology in traffic safety, in particular to a parametric array traffic sound safety reminder system. Background technique [0002] Acoustic parametric array technology in the air is an audio sound wave directional technology that has emerged in recent years. A highly directional audio sound beam can be generated by using an acoustic parametric array. The audio sound beam produced by the acoustic parametric array has unique characteristics, which are mainly reflected in two aspects: 1. Local propagation characteristics: that is, the sound beam only propagates in a local space, and the audience can hear the sound in this propagation space, while in the Listeners outside this propagation space area cannot hear or can only hear a very weak sound; 2. Unique reflection characteristics: After the audio sound beam encounters an obstacle, it has reflection characteristics similar to light...

AI Technical Summary

Problems solved by technology

However, since the safety signs are passively receiving information, and the camera cannot participate in the command, accidents and secondary accidents are prone to occur on site, and the rate of injury and forgetting remains high

Although tweeters were installed in some areas as a tool for active safety reminders, they were dismantled because the sound of ordinary speakers diffused in all directions, causing disturbance to residents

And because the sound lacks directionality, it will also cause trouble to the driver in actual command

Images