Agriculture irrigation water saving measuring method and metering instrument thereof
A metering method and agricultural irrigation technology, applied in the field of agricultural irrigation water-saving metering and metering instruments, can solve the problems of high cost, difficult to adapt to agricultural irrigation billing measurement, easy to be damaged by human beings, etc. The effect of large deviation of measurement value and long life
Inactive Publication Date: 2008-01-30
李赞东
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Problems solved by technology
[0002] Most of the liquid flow measuring instruments are serial flow meters, which are more suitable for the measurement environment with low liquid impurity content, so it is difficult to adapt to the billing measurement of agricultural irrigation, and the cost is high
Although the non-inline flowmeter is not limited by the state and content of liquid impurities, its cost is high, especially it is vulnerable to human damage, and it is also difficult to apply to the extensive management of agricultural irrigation billing measurement
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[0008] The water-saving metering method for agricultural irrigation of the present invention is as follows: first, the flow value of the straight pipe section 40 connected to the outlet of the water pump 10 is collected by the non-serial flow meter 30, and at the same time, the electric controller 1 and the pulse signal acquisition circuit 2 for measuring the electric power value of the water pump are collected. Detect the pulse signal value of the electric power consumption of the pump that pumps out the flow value. The above-mentioned parameter values including the actual lift, electrical efficiency and mechanical efficiency of the pump are sent to the single-chip computer for calculation to calibrate the working characteristics of the actual working electric power and flow value of the pump. Curve, stored in the data storage unit, and then referring to the nominal parameters of the electric controller, the flow conversion is carried out according to the mathematical model o...
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The invention provides an agricultural irrigation water-saving measurement method and a measurement device, the technic proposal adopts a flux measurement method avoiding the water transmission channels and having low measurement errors, the measurement method is that: a non-series flow meter is used for measuring the pump quantity connected into a output straight tube section of a water pump and at the same time the electric power consumption value of pumping the flux value by the water pump is recorded, the water pump practical working character curve is calibrated, and a math model with the flux and the water pump working electric power presenting linearity relation: Q is equal to K is multiplied by W is used for converting the pumping quantity of the water pump, the real time using water quantity monitoring and measurement are accomplished. An SCM central control element of an agricultural irrigation water measurement meter achieving the measurement method is connected with a water pump real time information detection channel and a parameter calibration setting channel. The technic proposal has the technical advantages of high using reliability and accurate measurement of the measured flux value.
Description
technical field [0001] The patent application of the present invention relates to an agricultural irrigation measurement method and its equipment for realizing real-time and accurate detection of water consumption. Background technique [0002] Most of the liquid flow measuring instruments are in-line flowmeters, which are more suitable for the measurement environment with low liquid impurity content, so it is difficult to adapt to the billing measurement of agricultural irrigation, and the cost is high. Although the non-inline flowmeter is not limited by the state and content of liquid impurities, its cost is high, especially it is vulnerable to human damage, and it is also difficult to apply to the extensive management of agricultural irrigation billing measurement. Since agricultural irrigation has a large intake of water resources, the low cost of flow metering equipment and the requirements for low error in flow measurement are particularly critical. Therefore, it is ur...
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IPC IPC(8): G01F1/704
CPCY02A20/00
Inventor 许景妍汪光伟李赞东
Owner 李赞东