Piezoelectric rainfall measurement device

A measuring device, piezoelectric technology, applied in the field of piezoelectricity, can solve the problems of abnormal siphon, manual regular maintenance and cleaning, blockage, etc., and achieve the effect of automatic observation

Active Publication Date: 2015-01-28
INST OF ELECTRONICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

The siphon rain gauge uses the float to move vertically with the rise of the water surface, and drives the self-recording pen to move on the self-recording paper to record the total amount of precipitation through an appropriate mechanism. It is suitable for manual observation, but when the siphon rain gauge is used in the north, it is easy to Under "mud rain", the siphon is not normal after the siphon is dirty
Tipping bucket rain gauges and weighing rain gauges will also be affected by dust during long-term use, causing clogging problems
Therefore, conventional rainfall measuring devices need manual maintenance and cleaning on a regular basis

Method used

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  • Piezoelectric rainfall measurement device
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Embodiment Construction

[0019] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that in the drawings or description of the specification, similar or identical parts use the same drawing numbers. The implementations not shown or described in the drawings are those known to those of ordinary skill in the art. In addition, although this article may provide an example of a parameter containing a specific value, it should be understood that the parameter does not need to be exactly equal to the corresponding value, but can be approximated to the corresponding value within acceptable error tolerances or design constraints. The directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only directions with reference to the draw...

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Abstract

The invention provides a piezoelectric rainfall measurement device. The piezoelectric rainfall measurement device comprises a hollow supporting body, a sound detection sensitive film, a raindrop contact film and a measurement unit, wherein a supporting cavity is formed in the hollow supporting body, the upper end and the lower end of the supporting cavity are open, the sound detection sensitive film comprises, at least, a piezoelectric material film covering an opening formed in upper end of the supporting cavity, the raindrop contact film is made from a material capable of conducting sound and fixed above the sound detection sensitive film, a sound cavity is formed between the raindrop contact film and the sound detection sensitive film, and the measurement unit is electrically connected to an upper electrode and a lower electrode of the sound detection sensitive film through two lead wires. The piezoelectric rainfall measurement device recognizes the momentum of raindrop pulses by recognizing the amplitude of sound wave pulses, can obtain rainfall, rainfall intensity and other parameters on the basis that the raindrop quantity and raindrop size are recognized and is a novel rainfall sensor.

Description

Technical field [0001] The present invention relates to the field of piezoelectric technology, in particular to a piezoelectric rainfall measuring device. Background technique [0002] Rainfall measuring device is suitable for meteorological stations (stations), hydrological stations, agriculture, forestry, national defense and other relevant departments to remotely measure liquid precipitation, precipitation intensity, and precipitation start and end time. For flood control, water supply dispatching, power station reservoir water regime management for the purpose of hydrological automatic forecasting system, automatic field forecasting station. [0003] There are three conventional precipitation recording instruments: weighing type, tipping bucket type and siphon type. The siphon rain gauge uses a float to move vertically as the water surface rises, and a proper mechanism drives the self-recording pen to move on the self-recording paper to record the total precipitation. It is su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/14
CPCG01W1/14
Inventor 杜利东赵湛张萌颖吴少华方震
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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