| 摘要 |
PROBLEM TO BE SOLVED: To provide an earthquake detector which can be reduced in size and weight as a whole and can be prevented effectively from malfunctioning due to noise, etc. SOLUTION: An earthquake detector is provided with a triaxial semiconductor acceleration sensor 30, an arithmetic processing circuit 40 which outputs the results of arithmetic processing as digital signals 57, and an explosion-proof case 20 which is provided with a cover, a shielding wire leading-out section, etc., and houses the sensor 30 and circuit 40. The circuit calculates the SI value, intensity, acceleration, displacement, and speed of an earthquake and is provided with a calculated value selecting means which can select a plurality of arbitrary calculated values from the calculated results of the circuit 40 through loader communication. |
