Patent ID: 8991260
Filing Date: 2015-03-31
Classification: E21D,G01N,G01V

Abstract:
1. A pseudo rock, configured to be buried inside a mineral deposit or under ground, comprising: a housing having an average shape and size of rocks existing inside the mineral deposit or the ground; a plurality of strain sensors provided in the housing and configured to detect a stress acting in positive and negative directions of each axis with respect to three-dimensional coordinates (X axis, Y axis, Z axis); a three-axis acceleration sensor provided in the housing and configured to detect acceleration acting in each axis of the three-dimensional coordinates; a vibration generator provided in the housing and configured to produce vibration in a specific direction with respect to the three-dimensional coordinates; and a controller provided in the housing and configured to convert respective detected values of the strain sensors and the three-axis acceleration sensor into vibration pulses of specific patterns and outputting the vibration pulses to the vibration generator.