MULTI SENSOR SYSTEM FOR GROUND VIBRATIONS DUE TO BLASTING

Abstract

This invention concerns a multi-sensor system, more specifically a multi-sensor system for blasting-induced ground vibrations based on LoRa (Long Range Radio) communication with GSM fallback using the MQTT (Message Queuing Telemetry Transport) protocol and local storage as a backup. The multi-sensor system for blasting-induced ground vibrations in this invention comprises: at least one geophone sensor and one accelerometer sensor installed at a monitoring location to record ground vibrations; geophone sensors and accelerometer sensors connected to a data acquisition module; a microcontroller connected to the data acquisition module, which is programmed to perform vibration data processing, including calculation of amplitude, dominant frequency, and automatic trigger logic before and after blasting; local storage media in the form of an SD-card connected to the microcontroller to store the acquisition data as a backup;the main wireless communication module is LoRa, with the LoRa transmitter connected to the microcontroller to send data to the monitoring center; the backup communication module is GSM connected to the microcontroller; and the receiver server system (SSP) consists of a LoRa receiver, a fallback GSM subscriber that receives data from both LoRa and GSM lines, which is controlled by the receiver microcontroller and then stored on the MiniPC / server in the form of a database that is processed through programming, and a dashboard display.;