Final-stage channel flow measuring method and device

Abstract

The invention relates to a final-stage channel flow measuring method and device and belongs to the technical field of agricultural irrigation flow metering. According to the technical scheme, two pressure sensors are arranged on two sides of a main pipeline (1) in a matched manner, and the output ends of the pressure sensors are connected to a monitoring terminal (3); the pressure sampling points of the two pressure sensors are opposite on the main pipeline, one point faces to the water incoming direction of the main pipeline obliquely, and the other point is opposite to the water incoming direction of the main pipeline obliquely; the monitoring terminal comprises a single chip processor (6), a lithium-ion battery (7), a remote communication module (8) and a radio frequency communication module (9), the radio frequency communication module matches with a radio frequency communication module of mobile communication equipment, and the remote communication module matches with a remote monitoring computer. The continuous flow monitoring can be performed in the field final-stage channels, the efficiency and measuring accuracy can be improved, the problem of 'agricultural irrigation last one kilometer metering' can be solved, and the effect of saving water is achieved.

Description

technical field [0001] The invention relates to a method and device for measuring the flow rate of an end-stage channel, belonging to the technical field of agricultural irrigation flow measurement. Background technique [0002] Today's agricultural production no longer depends on the weather, but on irrigation to ensure a good harvest. Channels are used to lead surface water to the fields. Canal systems are composed of large and small channels. The order is: main canal, branch canal, bucket canal, end-level canal, surface water is distributed from one main canal to multiple branch canals, one branch canal is allocated to multiple bucket canals, one bucket canal is allocated to multiple end-level canals, and the canal is the last end-level canal In the field, where the quantity is large, the flow rate is small, and the flow rate is slow, it is the place where farmers are charged for water metering. However, there is no ideal and cheap water metering product at present. The s...

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Problems solved by technology

[0002] Today's agricultural production no longer depends on the weather, but on irrigation to ensure a good harvest. Channels are used to lead surface water to the fields. Canal systems are composed of large and small channels. The order is: main canal, branch canal, bucket canal, end-level canal, surface water is distributed from one main canal to multiple branch canals, one branch canal is allocated to multiple bucket canals, one bucket canal is allocated to multiple end-level canals, and the canal is the last end-level canal In the field, where the quantity is large, the flow rate is small, and the flow rate is slow, it is the place where farmers are charged for water metering. However, there is no ideal and cheap water metering product at present. The staff use hand-held propeller flowmeters to come to the field. Manual measurement of the ground is low in efficiency and accuracy, and cannot be measured continuously, and it is not convenient for automatic monitoring and management

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