Device for testing kinetic energy of spraying water drop

Abstract

The invention relates to a device for testing kinetic energy of a spraying water drop. The device comprises a sensor water receiving module, a signal conditioning module, a data collection module, a computer and a data analysis module, wherein the data analysis module is arranged inside the computer, the sensor water receiving module comprises a substrate, an array sensor which is composed of a plurality of piezoelectric membranes is arranged on the substrate, the sensor water receiving module us arranged below spraying water, a sensor outputs a sensed electric charge quantity Q through a forward electrode output end of the sensor after the sensor senses the water drop, a reverse electrode output end of the sensor is grounded, the signal conditioning module comprises an impedance conversion unit and an amplification unit, the impedance conversion unit is used for converting the electric charge quantity Q sensed by the sensor into a voltage quantity U<0> for output, the amplification unit is used for amplifying the voltage quantity U<0> output by the impedance conversion unit and outputting a voltage quantity U<out>, and the data collection module obtains the voltage signal U<out> output by the amplification unit in real time and inputs the voltage signal U<out> into the computer after analog-to-digital (A / D) conversion. The device is widely applicable to kinetic energy tests of spraying water drops in little sprinkling irrigation projects.

Description

technical field [0001] The invention relates to a test device, in particular to a test device for kinetic energy of sprayed water droplets. Background technique [0002] Micro-sprinkler irrigation is one of the important technologies to realize agricultural water saving and sustainable development of water resources. The impact intensity of spraying water droplets is an important performance parameter of sprinkler nozzles, and it is also an important index to evaluate the adaptability of sprinkler irrigation systems to soil and crops. Water at a certain pressure is ejected from the nozzle of the sprinkler head, and the water beam is split in the air, and finally falls to the soil surface in the form of individual water droplets. When water droplets hit the soil surface, the kinetic energy of the water droplets must have an impact on the process of soil erosion and water infiltration. Practice has shown that the kinetic energy of water droplets sprayed by the nozzle is too ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned flour method to measure the diameter of water droplets and calculate the kinetic energy of water droplets is complicated and the test cycle is long. In addition, most of the manual operations in the test process are prone to operational errors. Simplified or empirical formulas need to be applied in the solution process, which will lead to low accuracy and repeatability of the measurement results. poor sex

Due to the influence of wind direction, wind speed, and overlapping spraying of water droplets in the field test, the actual measurement difficulty and measurement error are greater

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