Runoff silt content automatic measuring system

Abstract

The invention discloses a runoff silt content automatic measuring system, which comprises a sample container, a determining device, a weighing sensor and a controller, wherein the lateral upper part of the sample container is provided with a water inlet; a water pump is arranged on the water inlet; the bottom of the sample container is provided with a water discharging opening; a water discharging valve is arranged on the water discharging opening; the upper end and the lower end of the sample container are respectively provided with a first support frame and a second support frame; the measuring device is arranged at the middle part of the sample container; the upper side of the measuring device is connected with a circular ring through a steel wire; the circular ring is hung and arranged on the first support frame; the weighing sensor is arranged above the circular ring; one end of the weighing sensor is connected with the circular ring through a steel wire; the other end of the weighing sensor is connected with a windlass through a steel wire; the controller is electrically connected with the water pump, the windlass, the weighing sensor, a water discharging valve, a rain quantity meter and a water level meter. The runoff silt content automatic measuring system provided by the invention has the advantages that the processes of manual sampling, filtering, drying and the like are not needed; the silt content in the slope runoff and river runoff can be subjected to real-time automatic monitoring.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to an automatic measurement system for sediment content in runoff. Background technique [0002] The sediment in the runoff is formed by soil erosion on the slope during the precipitation process. It is fine-grained sediment that can collect into the channel along with the runoff on the slope. The sediment content is a key parameter to determine the soil erosion modulus of a small watershed. , is one of the indicators that must be accurately measured in the study of slope soil erosion and soil and water conservation, and it is also an indicator that must be measured for a long time in the monitoring of water and soil loss. [0003] At present, the sediment content in runoff is usually collected in the field and measured indoors by filtering and drying methods. Real-time monitoring cannot be carried out, and it takes a long time in the field to complete the sampling process. Ind...

AI Technical Summary

Problems solved by technology

The photoelectric method uses the scattering law of light in water to measure. At present, OBS turbidimeter is widely used, but it is prone to window pollution, which affects the scattering of infrared light, and as the number of measurements increases, errors will gradually accumulate.

[0004] It can be seen that there is no ideal instrument that can automatically measure and monitor the runoff sediment content in real time.

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