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River-level prediction device

A technology for predicting devices and rivers, which can be used in measuring devices, open-air water source surveys, water conservancy projects, etc. It can solve problems such as unpredictable corrections and inability to deal with water level changes, and achieve the effect of preventing the decline in water level prediction accuracy

Inactive Publication Date: 2003-08-27
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This predictive model cannot handle changes in water level due to any number of factors that were not used as input, and cannot make prediction corrections for unanticipated conditions that cause water level changes

Method used

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Experimental program
Comparison scheme
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no. 1 approach

[0034] Refer to the attached figure 1 , 2 and 4 explain the first embodiment of the river water level device of the present invention.

[0035] The first way is to identify the water level prediction model used by the river water level prediction device, specifically determine the parameters of the autoregressive part of the water level prediction model when designing the filter, and only calculate the parameters of the FIR model part through the model determination part.

[0036] Such as figure 2 As shown, the drainage machine station 1 is set at the place where the water diversion 4 and the main river 2 join, and the main river 2 that merges with the diversion 4 communicates with the sea 10 . And the gate 3 that prevents backflow from the mainstream river 2 to the diversion channel 4 is installed near the junction of the diversion channel 4 and the mainstream river 2, and prevents the reverse flow from the mainstream river to the diversion channel 4 through the gate 3, an...

no. 2 approach

[0093] Refer below figure 1 with Figure 5 Identification of the second embodiment of the present invention will be described.

[0094] figure 1 The second embodiment of the river water level prediction device of the present invention is shown.

[0095] The second embodiment lies in the identification of the water level prediction model. First, the parameters of the auto-regression part and the parameters of the FIR model part are obtained according to the change factors of the river water level in clear weather, and then according to other change factors of the water level of the river in rainy days and heavy rains thereafter Find other parameters of the FIR model part in turn.

[0096] In the second embodiment, except that the number of times of each parameter of the water level prediction model and the determination method of each parameter are different, the others are roughly the same as the first embodiment, so in the second embodiment, the same parts as the first emb...

no. 3 approach

[0138] Refer below figure 1 with Image 6 A third embodiment of the present invention will be described.

[0139] The third embodiment is that in the identification of the water level prediction model, the parameters of the autoregressive part and the parameters of the FIR model part are independently calculated based on the information from the river water level fluctuation factor measurement part, and the parameters of the autoregressive part and the FIR part The parameters are pre-set transformations to make them suitable as water level prediction model parameters.

[0140] figure 1 It is a figure which shows the 3rd embodiment of the river water level prediction apparatus of this invention.

[0141] The third embodiment is substantially the same as the first embodiment except that the number of parameters of the water level prediction model and the determination method of each parameter coefficient are different. In the third embodiment, detailed descriptions of the sa...

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Abstract

To provide a river water level predicting apparatus which predicts the water level of a river with accuracy. The river water level predicting apparatus 1 comprises a water level measuring section 5 for measuring the water level of the river 4 and storing therein a measured value, rainfall measuring sections 7, 8 for measuring rainfall quantities of a river 2 and the river 4 and storing therein the quantities, and a water level predicting model 20 for predicting the water level of the river, based on the measured values. The water level predicting model 20 has an autoregressive portion and an FIR model portion, and the model 20 is identified by a model identifying section 21. The model identifying section separately calculates a parameter for the autoregressive section and a parameter for the FIR model section, based on the measured values.

Description

technical field [0001] The present invention relates to a water level prediction device for predicting the water level of a river, in particular to a river water level prediction device capable of predicting the water level of a river with high accuracy. Background technique [0002] Generally, a drainage machine station is set up at the place where the diversion road merges with the main river, and there are drainage pumping stations and the diversion road that merges with the main river at the drainage station. Normally, the water in the diversion channel flows down naturally into the mainstream river. However, when the water level on the side of the mainstream river rises due to heavy rain, a reverse flow will form from the mainstream river to the side of the diversion channel, causing river flooding on the diversion route. Danger. Therefore, in the event of heavy rain, closing the water gate near the confluence of the diversion channel and the mainstream river can not o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/00E02B1/00G01C13/00G05B17/02G05B23/02
Inventor 吉泽直人山中理长岩明弘岩崎俊介国见正树
Owner KK TOSHIBA
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