Research Of Distance Alarm Based On Infrasonic Wave

Infrasonic wave has been widespread in natural world and human activities. From the existing research, it could been seen that the study on generation mechanism and signal characteristics of infrasonic wave could promote the research of activity rules of many natural objects such as the alarm for the coming of the train which could guarantee the security of maintenance workers of train effectively. Infrasonic detection and analysis system with high-precision and high-sensitivity is very favorable for the research of distance alarm technology of infrasonic wave and the original ranging technology could only be used in short distance without obstacles under the environment of alignment target. To detect and position the distance of the train, we need to apply the infrasound sensor to create the signal detection and analysis system. Through the management to infrasound signal which is picked up, it figures out the corresponding relationship between the distance of train and amplitude of infrasonic wave.Based on the research on train distance alarm technology of infrasonic wave, this paper firstly discusses the research status and future development of ranging technology at home and abroad and analyzes the advantages and disadvantages of existing distance alarm technologies as well as the advantages of distance alarm based on infrasonic wave comparing with other technologies. It focuses on studying the relevant theory and currently main application direction of infrasonic wave. Based on the distance alarm technology of infrasonic wave, it carries out the analysis on the feasibility and designs the detailed experimental scheme according to the generation principle and propagation characteristics of infrasonic wave. Lastly, it uses the designed experimental scheme and experimental installation to collect the field data. Through the management and analysis on collected infrasonic wave of train, it concludes some experimental results on distance alarm of infrasonic wave.Through the above research on infrasonic wave, it lays foundation for the research work in the later stage. It analyzes the experimental principle and experimental scheme of distance alarm technology of infrasonic wave with details. Besides, it designs the experimental installation of infrasonic alerter and carries out the feasible experiment.