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Piezoelectric film based raindrop impact kinetic energy sensor

A piezoelectric film and sensor technology, which is applied in the field of raindrop impact kinetic energy sensor and impact energy measurement sensor, can solve the problems of late start and immature technology, and achieve the effect of small noise signal

Inactive Publication Date: 2014-05-21
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic start is late, the technology is immature, and the raindrop sensor is rarely used in agriculture. Therefore, it is necessary to design and develop sensors for raindrop impact force and impact energy measurement equipment in agriculture.

Method used

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Embodiment Construction

[0017] see figure 1 , the present embodiment provides a raindrop impact kinetic energy sensor based on a piezoelectric film, which is composed of a piezoelectric film 1 and a PC board bracket 2, and the piezoelectric film 1 is located in the center of the PC board bracket 2 for converting the raindrop impact force into a voltage Pulse, the piezoelectric film 1 is drawn out through two lead-out wires 3, and one side of the PC board bracket 2 has a slope of 10° to 15° relative to the other side to ensure that water is discharged from the PC board bracket 2;

[0018] The length of the PC board support 2 is 40 mm to 50 mm longer than that of the piezoelectric film 1 , and the width of the PC board support 2 is 10 mm wider than that of the piezoelectric film 1 .

[0019] see figure 2 , the raindrop strike kinetic energy sensor based on the piezoelectric film prepared above is connected to a commercially available known high-speed data collector 4 through lead wires, and the analo...

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Abstract

The invention discloses a piezoelectric film based raindrop impact kinetic energy sensor. The piezoelectric film based raindrop impact kinetic energy sensor consists of a piezoelectric film and a polycarbonate (PC) board bracket, wherein the piezoelectric film is located in the middle of the PC board bracket and used for converting raindrop impact forces into voltage pulses, the piezoelectric film is led out through two lead-out lines, and one side of the PC board bracket has a gradient of 10 degrees to 15 degrees relative to the other side. The piezoelectric film based raindrop impact kinetic energy sensor can measure output voltage generated by raindrop impact forces produced by raindrops with known mass and drop height dropping on the piezoelectric film, the lead-out lines are connected with a high speed data collector to receive an analog pulse signal output by the piezoelectric film, signal amplification or filtration is not required, and by means of certain signal processing and data conversion, the analog signal is converted into a digital signal to be compressed and transmitted to a personal computer through a data line, so that raindrop impact forces and impact kinetic energy can be rapidly and conveniently obtained, and a possibility is provided for testing an impact force of a mobile rainmaker.

Description

technical field [0001] The invention belongs to the technical field of sensor design and manufacture, and relates to a sensor for measuring impact energy, in particular to a piezoelectric film-based raindrop impact kinetic energy sensor, which is suitable for measuring the impact force and impact kinetic energy of raindrops on the ground, plant surface and interior generated by sprinkler irrigation equipment . Background technique [0002] The splashing effect of raindrops is the main driving force of soil erosion in the bare land period. The impact kinetic energy of raindrops has a great influence on the permeability of calcium, magnesium, sodium calcium and sodium magnesium in soil. When the impact kinetic energy of raindrops increases, the degree of soil compaction also increases. The corresponding increase, and the impact of raindrops on young leaves will directly affect the yield and quality of crops. Therefore, raindrop impact and impact kinetic energy are one of the i...

Claims

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Application Information

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IPC IPC(8): G01L5/00
Inventor 曹培韩文霆
Owner NORTHWEST A & F UNIV
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