PRECIPITATION CONDITION OBSERVATION DEVICE AND OBSERVATION METHOD

摘要

PPROBLEM TO BE SOLVED: To continuously observe a precipitation amount in an observation objective position for a precipitation condition, and a rain drop size therein, in a short time pitch. PSOLUTION: This device/method is provided with a sensor part 1 having a sound pressure sensor 12 for detecting a sound pressure change generated by collision with a rain receiving face cover 11 of a rain drop falling in the precipitation, and a control recording part 2 for conducting frequency conversion based on a sound pressure detection signal transmitted from the sensor part 1 with a prescribed time interval and a time width, for calculating the precipitation amount and the rain drop size based on a prescribed band of frequency, and for outputting to a calculated result therein to an outside, or recording it in a medium. The precipitation amount and the size of a falling rain drop in the precipitation are calculated in the prescribed time interval and a prescribed time zone, based on the sound pressure detection signal obtained by detecting the sound pressure change in a collision sound of the rain drop onto the rain receiving face cover 11, and a calculated value is displayed, output to the outside, and recorded in the medium. PCOPYRIGHT: (C)2005,JPO&NCIPI