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Ultrasonic self-calibration high-precision rain gauge

An ultrasonic and rain gauge technology, which is applied in the field of ultrasonic self-calibrating high-precision rain gauge and its measurement, can solve the problems of not meeting the requirements of rainfall measurement and the large range of rainfall observation, and achieve the effect of measuring rainfall and accurate rainfall

Active Publication Date: 2009-06-24
GUANGZHOU SUNTRANS MEASUREMENT & CONTROL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] ◆Large range of rainfall observation without loss
[0013] According to the actual situation of rainfall measurement, the current two main rainfall measurement methods cannot meet the requirements of rainfall measurement

Method used

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  • Ultrasonic self-calibration high-precision rain gauge

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Embodiment 1

[0060]As shown in Figure 1(a), Embodiment 1 of the present invention includes a rain collector 1, a rain barrel 2, an ultrasonic transducer 3 for calibration, an ultrasonic transducer 4 for measurement, a calibration measuring tool 5, a controller 6, a rainwater Temperature sensor 7, rainfall temperature sensor 8, drainage system and cleaning system. The calibration gauge 5 is set in the rain gauge barrel 2, the calibration transducer 3 and the measurement transducer 4 have the same emission frequency, both are placed at the bottom of the rain gauge barrel 2, and are on the same horizontal plane, and the calibration transducer 3 is placed on the side of the calibration gauge 5 Directly below, the measuring transducer 4 deviates from the calibration gauge 5 . The correction measuring tool 5 is a wide stainless steel plate that emits ultrasonic waves from the complete reflection correction transducer 3, which is 25mm wide, 90mm long, and 1.5mm thick. The rain temperature sensor...

Embodiment 2

[0100] As shown in Figure 1(b), the difference between the second embodiment of the present invention and the first embodiment is that only one ultrasonic transducer 3 is used, and the calibration gauge 5 is narrower than that of the first embodiment, which is a partially reflective transducer 3 The narrow stainless steel plate that emits ultrasonic waves is 5mm wide, 90mm long, and 1.5mm thick. Part of the ultrasonic waves emitted by the transducer 3 is reflected on the surface of the calibration gauge 5 and received by the transducer 3, and the other part passes through the calibration gauge 5. The rainwater collected by the rain barrel 2 is reflected on the surface and received by the transducer 3. Correspondingly, as shown in FIG. 2( b ), the transmission output circuit in the controller 6 of the second embodiment includes a photoelectric isolation circuit, a high-voltage circuit, and a transmission circuit, and there is only one transmission circuit.

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Abstract

The invention relates to an ultrasonic type self-calibrating high-accuracy udometer which comprises a rainfall bucket, an ultrasonic transducer, a correction measuring tool, a drainage system and a controller. The correction measuring tool is arranged in the rainfall bucket; the transducer is placed at the bottom part of the rainfall bucket and under the correction measuring tool; and the drainage system comprises a drain valve arranged at the bottom part of the rainfall bucket. The controller comprises a CPU; the CPU is used for transmitting an ultrasonic wave through an emission output circuit exciting transducer; and the ultrasonic wave is vertically transmitted to and reflected by the surface of the correction measuring tool, received by the transducer, and input into the CPU for data processing through a receiving input circuit; and the ultrasonic wave is vertically transmitted to and reflected by the surface of rainwater collected in the rainfall bucket, received by the transducer and input into the CPU for data processing through the receiving input circuit. Through respectively detecting the transmitting and the receiving time from the ultrasonic wave to the correction measuring tool and the transmitting and the receiving time from the ultrasonic wave to the surface of the rainwater collected in the rainfall bucket, the invention can accurately detect the surface height of the rainwater in the rainfall bucket, thereby accurately detecting the rainfall. The invention further provides a rainfall measuring method.

Description

Technical field: [0001] The invention relates to an ultrasonic self-calibrating high-precision rain gauge and a measuring method thereof for measuring light rain, moderate rain, heavy rain and heavy rain. Background technique: [0002] In the prior art, rainfall measurement mainly includes tipping bucket type and siphon type. The structure of the tipping bucket is simple, but the accuracy is greatly affected by the intensity of the rain. During heavy rain or heavy rain, the error is large; and its mechanical transmission structure affects its life, which requires regular maintenance. The siphon type has a certain accuracy, but it is mainly used for on-site readings, which is not conducive to long-distance data transmission; the structure is too complicated, which is not conducive to installation and maintenance; the range of no-loss rainfall observation is small. [0003] At the same time, rainfall measurement mainly has the following two characteristics: [0004] ◆High pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/14
Inventor 郑贵林
Owner GUANGZHOU SUNTRANS MEASUREMENT & CONTROL SYST
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