Isolation type integrated high-precision liquid level measuring device and liquid level measuring method

Abstract

The invention discloses an isolation type integrated high-precision liquid level measuring device and measuring method. The device comprises a shell, an induction panel and a single-chip microcomputer, wherein the induction panel and the single-chip microcomputer are arranged in the shell. n induction areas, n paths of induction capacitance conversion circuits, n-1 liquid level measuring electrodes, a liquid reference electrode, an environment reference electrode and n-1 capacitance-to-digital converters are arranged on the induction panel; one liquid level measuring electrode is arranged between every two adjacent sensing areas; each liquid level measuring electrode is connected with the corresponding capacitance-to-digital converter; the liquid reference electrode and the environment reference electrode are respectively connected with each capacitance-to-digital converter; and the induction capacitance conversion circuits and the capacitance-to-digital converters are respectively connected with the single-chip microcomputer. On the basis of the integrated design, 1-mm measuring accuracy can be realized by using an isolated measurement mode without exposed contacts; misconductioncan be prevented; and the measurement accuracy is ensured. The isolation type integrated high-precision liquid level measuring device and measuring method are suitable for urban waterlogging, underground drainage networks, sewage monitoring, dam seepage monitoring and other environments.

Description

technical field [0001] The invention relates to a liquid level measuring device, in particular to an isolated integrated high-precision liquid level measuring device and a measuring method, belonging to the technical field of water accumulation detection. Background technique [0002] With the rapid development of urbanization, the problems of urban waterlogging and poor drainage of underground pipe networks have become increasingly prominent. Especially in large and medium-sized cities, there is often a common urban problem of "heavy rain will flood". Therefore, major cities have begun to focus on the depth of accumulated water and the water level of the underground pipe network in low-lying areas of the city, and have invested a lot of manpower, material and financial resources in monitoring the accumulated water and the water level of the underground pipe network. However, due to the complex and harsh real environment, no one has yet Very satisfactory measuring equipment...

AI Technical Summary

Problems solved by technology

Acoustic water level gauges can only be installed in tube wells located on the side of the road, and are helpless for tube wells in the middle of the road; the measurement accuracy of gas-mediated ultrasonic water level gauges is affected by temperature and humidity; radar water level gauges have high power consumption and certain measurement blind spots

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