Rainfall Data Processing System Based on Piezoelectric Acceleration Sensor

Abstract

The invention provides a rainfall data processing system based on a piezoelectricity acceleration sensor. The rainfall data processing system based on the piezoelectricity acceleration sensor comprises a raindrop impact steel cover, the piezoelectricity acceleration sensor, a charge signal amplifier, an A / D converter and an MCU. The piezoelectricity acceleration sensor is installed on the bottom face of the steel cover. Raindrops impact the surface of the steel cover, a piezoelectric plate of the piezoelectricity acceleration sensor on the bottom face of the steel cover generates a charge signal in proportion to the raindrop accelerated speed, the charge signal is converted to be a voltage signal through the charge signal amplifier and then is filtered and amplified, A / D conversion is carried out on the signal, the digital signal obtained after A / D conversion is sent to the MCU to be operated, data of accumulative rainfall within a period, rainfall duration, rainfall intensity and the like are obtained, and the data are transmitted to a computer via an RS232 serial port finally. The rainfall data processing system based on the piezoelectricity acceleration sensor has the advantages of being simple in structure, long in service life, free of manual maintenance, high in precision and accuracy and the like.

Description

technical field [0001] The invention belongs to the field of data processing, and relates to a rainfall data processing system, in particular to a rainfall data processing system based on a piezoelectric acceleration sensor. Background technique [0002] Existing rain gauges or rain gauges have obvious defects, such as: poor measurement accuracy, measurement error changes drastically with changes in rainfall intensity, greatly affected by external random factors, cumbersome installation and adjustment, and difficult to perform standard verification during use. It cannot meet the needs of modern meteorological observation business, and cannot meet the requirements of high precision and high stability of observation data. [0003] At present, the sensors used in rain gauges or rain gauges, due to their own inherent principles and structural defects, the higher the resolution, the worse the system measurement accuracy under heavy rain conditions. [0004] Piezoelectric acceler...

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Problems solved by technology

[0002] Existing rain gauges or rain gauges have obvious defects, such as: poor measurement accuracy, measurement error changes drastically with changes in rainfall intensity, greatly affected by external random factors, cumbersome installation and adjustment, and difficult to perform standard verification during use. It cannot meet the needs of modern meteorological observation business, and cannot meet the requirements of high precision and high stability of observation data

[0003] At present, the sensors used in rain gauges or rain gauges, due to their own inherent principles and structural defects, the higher the resolution, the worse the system measurement accuracy under heavy rain conditions

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