| 摘要 |
The present invention comprises: multiple sensors installed on a bicycle to detect an object and output sensed signals rearwards and laterally arranged to laterally arrange sensed sections; an operation part for turning on and off each sensor to adjust the sensed sections of the object behind the bicycle based on the lateral direction; a control part for outputting signals for generating sounds with the difference depending on the sensed positions of the object based on the lateral direction by receiving the sensed signals outputted from each sensor; a speaker for outputting the sounds with the difference depending on the sensed positions of the object based on the lateral direction by receiving the signals outputted from the control part; and a battery for supplying power required for sensing of the sensors and the sound outputting of the speaker. The present invention can rapidly and conveniently check rear situations by distinguishing the direction of the object approached from the rear side through the sounds; thereby enabling a driver to keep eyes forward and to do operations required for safe driving and increasing reliability and accuracy on the rear detection. The present invention can control the size of the sensed sections of the object behind the bicycle based on the lateral direction according to actual road situations, such as the width of roads or the density of bicycles and pedestrians, thereby preventing inconvenience or malfunctions caused by the unnecessary or insufficient sensed sections. |
