Low-Cost High-Performance Infrasound Sensor Array System

Infrasound sensor arrays are used to detect, locate, identify source and determine yield of explosions. Arrays in current use require compromises in performance, and these are generally inherent in the sensor system design. Optical Fiber Infrasound Sensing OFIS) has been previously proposed and demonstrated to alleviate some of the conventional array weaknesses. However, large physical size made OFIS very difficult to install and calibrate. We propose an innovative approach to OFIS: Modular Optical Fiber Infrasound Sensing MOFIS). Our solution consists of two components: A scalable reconfigurable array of portable infrasound sensors connected by an optical fiber cable to a centrally located interrogator. Use of a large number of distributed array elements will enable both high performance and allow optimization and flexibility after deployment. In addition to explosion monitoring, infrasound array have applications in: Reservoir monitoring in the oil and gas industry. Monitoring of volcanic activity. Construction project monitoring. Perimeter safety monitoring.