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Method and system for prewarning drought and flood disasters of farmlands

A farmland flood and drought early warning system technology, applied to the level indicator of level members, etc., can solve the problems of many influencing factors, difficulties, and low reliability, and achieve the effect of simple implementation process, high degree of automation, and simple mechanism structure

Active Publication Date: 2013-04-03
WUHAN UNIV
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AI Technical Summary

Benefits of technology

This technology helps predict when there will be any future land-frozen or drought conditions that may affect crops grown on it. It uses measurements from both lands' surfaces and soil levels to determine whether these situations are likely causing damage to crops like rice plants. By combining this data into specific thresholds based upon factors such as weather patterns and plant height, we can help guide people towards preventive measures against them during times where they face severe challenges.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the accuracy and efficiency of predicting water levels during long periods when no rainwater occurs due to heavy precipitation over large gaps between two locations where soil layers may be different from each other. Current methods require expensive equipment that can only provide limited data at certain times such as once per day (once) which makes them unreliable under real-world conditions.

Method used

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  • Method and system for prewarning drought and flood disasters of farmlands
  • Method and system for prewarning drought and flood disasters of farmlands
  • Method and system for prewarning drought and flood disasters of farmlands

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Embodiment

[0033] The embodiment issues early warning information according to the following rules:

[0034] For flood warning, when the farmland surface water level H 上 ≥H p When the alarm starts, the user will be prompted to take drainage measures and / or automatically open the drainage gate to drain water, so that the H 上 ≤H 涝 And within the time interval T, the surface water level of the farmland will be reduced to H 上 ≤H p , T≤T 涝 , T=t 2 -t 1 , where H p In order to allow stagnant water depth, T 涝 In order to allow the duration of flooding, H 涝 In order to allow the maximum flood-resistant water depth, its value should be determined in combination with the actual situation of the farmland and the growth of the crops; Figure 4 As shown, Hmax and Hmin represent the upper limit and lower limit of the suitable water layer, respectively. t 1 for the surface water level to rise to H p time point, t 2 After drainage, the surface water level drops to H p point in time.

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Abstract

The invention relates to a method and a system for prewarning drought and flood disasters of farmlands. The method comprises the following steps: arranging an electronic water gauge for measuring an underground water level and an electronic water gauge for measuring a ground water level; inputting measuring results into a collector; transmitting the measuring results to a remote prewarning system server by the collector and processing the measuring results in the remote prewarning system server; judging whether floods, floodwater and droughts are available or not according to the ground water level and the underground water level by using the prewarning system server; and prewarning possible drought and flood disasters in time so as to prepare for irrigation or drainage. According to the invention, through automatic monitoring of the electronic water gauges within 24 hours, the drought and flood disasters can be effectively and automatically monitored and controlled; and meanwhile, the technical scheme provided by the invention obtains good expansibility.

Description

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Claims

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Application Information

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Owner WUHAN UNIV
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