Automatic monitor for suspended load sediments in river water

Abstract

The invention provides an automatic monitor for suspended load sediments in river water. The automatic monitor comprises a sample container with a water inlet, an overflow port and a water outlet, a weighing instrument which is electrically connected with a controller, a water pump which is electrically connected with the controller, and the controller, wherein a solenoid valve is arranged on the water outlet; an inlet of the water pump is connected with one end of a water inlet pipe, and the other end of the water inlet pipe stretches into water to be monitored; an outlet of the water pump is communicated with the water inlet of the sample container; the controller is used for transmitting instructions to the water pump, the weighing instrument and the solenoid valve respectively according to preset starting conditions and controlling actions of the water pump, the weighing instrument and the solenoid valve. The water pump is controlled to pump water in a specified volume into the sample container at a specified time point through the controller, the sample container containing water is weighed by the weighing instrument, and finally, the controller can obtain the content of suspended load sediments in water according to weighing data, the volume of pumped water and the specific gravity of the suspended load sediment. Moreover, monitoring conditions are input into the controller in advance, and manual sampling and other processes are not required, so that the monitoring efficiency is improved, and manual labor is reduced.

Description

technical field [0001] The invention relates to an automatic sediment monitoring and analysis technology, in particular to an automatic monitoring instrument for suspended sediment in river water. Background technique [0002] Suspended sediment is suspended in the river water and flows together with the river water. The particle size is small. The suspended sediment mainly comes from the soil erosion on the slope and the scour of the channel. The determination of the suspended sediment It is a key parameter for calculating river sediment load and determining the soil erosion modulus of small watersheds. Therefore, the monitoring of suspended sediment is a routine item that must be monitored by hydrological stations and soil and water conservation monitoring stations. Currently, suspended sediment is generally collected through sampling, The method of filtering and drying can not be monitored in real time, and the sampling process can only be completed if someone sticks to i...

AI Technical Summary

Problems solved by technology

[0002] Suspended sediment is suspended in the river water and flows together with the river water. The particle size is small. The suspended sediment mainly comes from the soil erosion on the slope and the scour of the channel. The determination of the suspended sediment It is a key parameter for calculating river sediment load and determining the soil erosion modulus of small watersheds. Therefore, the monitoring of suspended sediment is a routine item that must be monitored by hydrological stations and soil and water conservation monitoring stations. Currently, suspended sediment is generally collected through sampling, The method of filtering and drying can not be monitored in real time, and the sampling process can only be completed if someone sticks to it. Indoor analysis is time-consuming and laborious, especially when carrying out suspended sediment monitoring at night and in remote mountainous areas, it is easy to miss the measurement. , this method of sampling observation cannot realize the monitoring of the process of suspended sediment transport, and cannot carry out real-time dynamic monitoring. However, there is an urgent need for an unattended, automatic monitoring of suspended sediment in hydrological stations and soil and water conservation monitoring stations. Sediment instruments, currently the turbidity meter that can automatically monitor suspended sediments cannot be used in the monitoring of rivers with high sediment content in mountainous areas due to its limited measurement range, and there are many problems such as large errors

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