ELECTRONIC BOARD SYSTEM FOR USING PIR SENSOR

摘要

The present invention relates to a method and a system for measuring a pressure-void ratio using a seismic wave. The present invention provides a method for measuring a pressure-void ratio using a seismic wave which comprises: a disposing step of disposing a pulser transducer and a receiver transducer to be opposite to each other at both sides of a rock to measure; an oscillating step of oscillating electrical signals received from the pulser transducer through the conversion of the electric signals into ultrasonic waves by sending electrical signals from a signal generator; a transmitting step of receiving and measuring oscillated ultrasonic waves by the receiver transducer when ultrasonic waves oscillated from the pulser transducer pass through the rock to measure and transmit measured measurement signals to a filter; a filtering step of reducing unnecessary noise from the measurement signals transmitted to the filter and transmitting the signals to the oscilloscope by amplifying specific waveforms required at the measurement; and a measuring step of calculating the measurement values by reading the measurement signals which are filtrated and transmitted from the filter by the oscilloscope, displaying calculated measurement values and measurement signals and measuring the ultrasonic speed of the rock by confirming displayed measurement values and measurement signals.