| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a small-sized and light-weight vibration sensor, capable of being installed and operated easily, capable of obtaining output data having a high output gain and having a high S/N ratio, and capable of executing accurate vibration analysis of the ground, and a ground vibration analytical system. SOLUTION: This vibration sensor 1 is equipped with a first sensor part 3 and a second sensor part 13 having a natural period four times or more as long as the natural period of the first sensor part 3, and is capable of detecting vibration by using a frequency band twice or more as high as the natural period of the first sensor part 3 and a frequency band a half or less as low as that, and by using a frequency band twice or more as high as the natural period of the second sensor part 13 and a frequency band a half or less as low as that. In this system, plural vibration sensors 1 are installed on the ground, and an analytical device for inputting and analyzing output data from the first sensor part 3 and the second sensor part 13 of each vibration sensor 1 is provided.</p> |
