| 摘要 |
<p>The invention provides an ultrasonic pluviograph formed by an ultrasonic sensor, a microcontroller, a temperature sensor, a clock with configurable GSM/GPRS, a MMC/SD card, a GLCD screen, a numeric keyboard and a power source. The device uses a structure for measuring the intensity of the rain and the precipitation, which is based on the determination of the sound speed and the time used for traveling a distance.</p> |
