A Water Level Observation System Realizing Automatic Detection

Abstract

The invention relates to a water level observation system for achieving automatic detection. The water level observation system comprises a power supply, a mechanical part, a control part and a data acquisition part. The water level observation system is designed and manufactured by applying a water body buoyancy force principle, the water surface position is determined by utilizing buoy gravity and a buoyancy force balance point of the buoy gravity, and a buoy can flexibly and accurately move along with the water level change. The water level observation system acquires and records buoy movement information in real time so as to complete water level observation work. The water level observation system can achieve automatic control through a control circuit and an electromagnetic clutch, accordingly manpower expenditure is reduced, the electromagnetic clutch is started by transient current output by a PLC and controls return of a braking wheel, and accordingly automatic downward movement and balance are achieved. A line concentration wheel is driven by a motor to rotate, and accordingly the buoy upwards moves and automatically stops moving when being subjected balance force. Due to the fact that the electromagnetic clutch is only transiently started, energy consumption can be reduced, and burning loss of a circuit due to overheating can be prevented.

Description

technical field [0001] The invention relates to a water level observation system. Background technique [0002] In hydrogeological exploration activities, long-term dynamic observation of borehole groundwater level and large-scale pumping test borehole groundwater level observation are often carried out to study the spatial distribution of groundwater flow field and its dynamic change law. This work has the characteristics of high observation frequency, long duration, high occupation rate of human and material resources, and high comprehensive cost. [0003] At present, the tools used to observe the water level in the borehole mainly include the following four types: (1) Measuring clock, the most primitive and simple tool, its device is a rope with scales hanging from the lower end of two cylinders with a thin top and a thick bottom. Iron cylinder (the diameter of the large cylinder is about 5 cm, and the diameter of the small cylinder is about 3 cm), and the echo generated...

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Problems solved by technology

[0004] Among the above-mentioned tools, tools of type (1), (2), and (3) have high ductility of measuring ropes and large human measurement errors, which lead to low measurement accuracy, and require reciprocating lifting and lowering of measuring ropes, resulting in high labor occupancy rate; (4) Although it can automatically record the water level, the instrument is huge and complicated, difficult to operate, and the production cost is very high, so it is not suitable for large-scale promotion

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