Water level monitoring device and method and well lid

Abstract

The invention relates to a water level monitoring device. The water level monitoring device comprises an ultrasonic sensor, a water pressure sensor, a communication module and a power supply. When any one of an ultrasonic detector and a pressure probe detects that the water level rises, a microprocessor is activated, and the ultrasonic detector is extremely sensitive and can detect imperceptible changes, so that response of the device is more sensitive. In addition, the ultrasonic sensor monitors the water level through an echo location mode and is not affected by the water velocity and direction, and therefore water level information can be obtained more accurately. Furthermore, weighting treatment is conducted on the water level information obtained through the ultrasonic sensor and water level information obtained through the water pressure sensor to obtain a current water level, and therefore an error between the obtained current water level and the practical water level can be further reduced. Therefore, the water level monitoring device can effectively improve the reaction sensitivity and monitoring precision. In addition, the invention further provides a water level monitoring method and a well lid.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a water level monitoring device, method and well cover. Background technique [0002] Sewer pipes are an important part of urban drainage systems. In rainy days, the water level of the sewer pipes often increases due to the poor drainage of the sewer pipes, which may cause urban water accumulation. Therefore, when the water level exceeds the preset warning water level, an alarm is required. [0003] At present, the general monitoring device is to install a water pressure sensor on the well cover, monitor the water pressure through the water pressure sensor, and then obtain the current water level through the processing module, and then send an alarm according to the height of the water level. At present, a battery is generally used to power the monitoring device, and the power of the battery is limited. In order to improve the service life, the processor and other components...

AI Technical Summary

Problems solved by technology

[0004] However, sometimes when the water level rises, it is difficult to be detected by the water pressure sensor, resulting in a delayed response

Moreover, when the water level rises sharply, due to the undercurrent under the water surface, the water pressure acquisition may be inaccurate, resulting in deviations in the obtained current water level

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