| 摘要 |
PROBLEM TO BE SOLVED: To provide a blasting detector surely detecting blasting even if disposing a pressure receiving part at a location distant from a blasting part without needing a complicated mechanism or operation, and adjustable in sensitivity according to each tunnel even if used in the tunnel of a different noise environment. SOLUTION: The blasting detector 1 controlling the operation time of a dust collector or the like interlocked with blasting in the tunnel has: the pressure receiving part 2; a blasting sound pressure filter 4 comprising a sound pressure waveform generated by blasting in use; a detecting section 5 detecting the blasting sound pressure waveform generated by blasting within a sound source generated in the tunnel by identifying by the blasting sound pressure filter 4, the sound pressure waveform from the sound source generated in the tunnel, received by the pressure receiving part 2; and an output section 6 outputting a detected result as a detection signal to a control section 7 of the dust collector or the like. COPYRIGHT: (C)2010,JPO&INPIT |
