A rain gauge sensor without mechanical structure
A measuring sensor without mechanical technology, applied in the field of sensors, can solve the problems of poor reliability and inaccurate measurement of tipping bucket rain gauge, and achieve the effect of not easy mechanical damage, low power consumption and strong reliability
Inactive Publication Date: 2020-05-15
NORTHWEST UNIV
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Problems solved by technology
[0005] In order to solve the technical problems of inaccurate measurement and poor reliability of existing mechanical tipping bucket rain gauges, the present invention provides a rain gauge sensor without mechanical structure with accurate measurement and high reliability
Method used
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Embodiment Construction
[0022] Such as figure 2 and 3 As shown, the barrel capacitor 102 includes a corrosion-resistant insulating measuring cylinder 203, the outer wall of the corrosion-resistant insulating measuring cylinder 203 is connected with a metal foil 201, the stainless steel rod 202 is vertically connected to the bottom of the corrosion-resistant insulating measuring cylinder 203, and the stainless steel rod 202 is located on the corrosion-resistant insulating measuring cylinder 203. on the central axis of the graduated cylinder 203.
[0023] The length of the stainless steel rod 202 is the same as the height L of the corrosion-resistant insulating graduated cylinder 203 .
[0024] The metal foil 201 serves as the first electrode, that is, the external electrode. The stainless steel rod 202 serves as the second electrode, the inner electrode. The first lead wire 205 is connected to the metal foil 201 , and the second lead wire 206 is connected to the stainless steel rod 202 . A capaci...
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The invention relates to a rain measurement sensor without a mechanical structure, which solves the technical problems of inaccurate measurement and poor reliability of the existing mechanical tipping bucket rain gauge. It includes a barrel capacitor, a capacitance measurement circuit, a single-chip microcomputer and a liquid crystal display module. The capacitance measurement circuit is connected to the microcontroller, and the liquid crystal display module is connected to the microcontroller; the barrel capacitor includes a corrosion-resistant insulating measuring cylinder, the corrosion-resistant insulating measuring cylinder is provided with an outer wall and a bottom of the cylinder, the outer wall of the corrosion-resistant insulating measuring cylinder is connected with metal foil, and the corrosion-resistant insulating measuring cylinder is connected with a metal foil. A stainless steel rod is vertically connected to the bottom of the cylinder, and the stainless steel rod is located on the central axis of the corrosion-resistant insulating measuring cylinder; the metal foil and stainless steel rod are connected to the capacitance measurement circuit through leads respectively. The invention is widely used in the technical field of monitoring liquid amounts such as rainfall.
Description
technical field [0001] The invention relates to a sensor, in particular to a rain gauge sensor without a mechanical structure. Background technique [0002] As the environment continues to change, extreme and severe climate changes become more and more obvious, and people hope to monitor and count rainfall more frequently. Accurate determination of precipitation in a certain area in a certain period of time has scientific guiding significance for the analysis and prediction of climate change and weather conditions in the area, and can also provide effective theories for people's travel, crop growth and development, and protection of ancient ruins and cultural relics. in accordance with. [0003] At present, the rain sensor mainly uses a mechanical tipping bucket rain gauge, which has a relatively poor ability to measure rainfall changes, and due to mechanical corrosion and wear, it cannot accurately and quickly measure rainfall information if it is placed in the field for a...
Claims
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IPC IPC(8): G01W1/14
CPCG01W1/14
Inventor 邓周虎来宝鹏张雄王雪文闫军锋
Owner NORTHWEST UNIV