CN-122018578-A - Intelligent water level control device and method based on cosmic ray muon flux

CN122018578ACN 122018578 ACN122018578 ACN 122018578ACN-122018578-A

Abstract

The invention relates to an intelligent water level control device and method based on cosmic ray muon flux, the device comprises a muon detector, a liquid level meter, water level adjusting equipment and a central processing unit which is in communication connection. The central processing unit executes a closed-loop control flow, a target water level is firstly set, the regulating equipment is controlled and regulated to the target water level according to feedback of the liquid level meter, then real-time muon flux data are collected and monitored, whether collection meets preset conditions or not is judged, the next target water level is set and regulation is repeated, and if the collection does not meet the preset conditions, monitoring is continued until a preset measurement sequence is completed. The invention integrates the data acquisition and water level control system, realizes accurate water level regulation and control, achieves dynamic coupling feedback of data acquisition and water level control through dynamic decision of a muon flux monitoring result, can automatically judge the sufficiency of data acquisition and intelligently switch measurement states, improves the experimental efficiency and automation level of a water depth-flux model, and adapts to active control variables and intelligent experimental requirements.

Inventors

CHEN MIN
LU SITONG
WANG QINGHUA
GAO SHUNXI
LI LEI
ZHANG HUI
TAN JIE

Assignees

上海市地矿工程勘察(集团)有限公司
上海市岩土工程检测中心有限公司

Dates

Publication Date: 20260512
Application Date: 20260211

Claims (10)

1. An intelligent water level control device based on cosmic ray muon flux is characterized by comprising a muon detector, a liquid level meter and water level adjusting equipment, wherein the muon detector is used for detecting the cosmic ray muon flux passing through a medium to be measured, the liquid level meter is used for measuring the actual water level height of the medium to be measured, the water level adjusting equipment is used for adjusting the water level height of the medium to be measured, and a central processing unit is in communication connection with the muon detector, the liquid level meter and the water level adjusting equipment; the central processor is configured to perform a closed loop control process comprising: S1, setting a target water level value; S2, controlling the water level regulating equipment to work, and judging whether the actual water level of the medium to be measured reaches the target water level value based on feedback of the liquid level meter; S3, when the actual water level reaches the target water level value, collecting and monitoring based on the muon flux data detected by the muon detector in real time, and judging whether the data collection under the current water level meets a preset condition or not based on a monitoring result; s4, if the preset condition is met, setting a next target water level value according to a preset measurement sequence, and returning to S2; S5, repeating the steps S2 to S4 until all preset measurement sequences are completed.
2. The intelligent water level control apparatus based on cosmic ray muon flux according to claim 1, wherein the muon detector comprises a main detector array and a control detector group, the main detector array is arranged right below the medium to be measured for detecting muon flux passing through the medium to be measured, the control detector group is arranged at a side non-shielding area of the medium to be measured, the water level adjusting device comprises a water inlet system and a water drainage system, the water inlet system is used for injecting liquid into a container containing the medium to be measured, and the water drainage system is used for draining liquid from the container.
3. The intelligent water level control device based on the cosmic ray muon flux according to claim 2, wherein the medium to be measured is contained in an experiment box, the experiment box is connected with a water storage tank through a pipeline, and the water inlet system and the water outlet system realize liquid circulation between the experiment box and the water storage tank through the pipeline.
4. The intelligent water level control device based on the cosmic ray muon flux according to claim 3, wherein the experiment box is of a modularized structure, the bottom of the experiment box is supported by a steel structure, the main detector array is arranged in a space below the steel structure at the bottom of the experiment box, the water inlet system comprises a PE pipe with an inner diameter of 1 cm, a water inlet pump and a water inlet controller, the water outlet system comprises a 4-branch pipe, a drainage pump and a water outlet controller, the water inlet controller and the water outlet controller are in communication connection with the central processing unit, and the liquid level meter is arranged on the inner wall of the experiment box and close to the bottom of the experiment box.
5. The intelligent water level control device based on the cosmic ray muon flux according to claim 1, wherein the determining in S3 whether the data acquisition under the current water level meets the preset condition includes: Judging whether the number of the muon instances collected under the current water level reaches a first preset threshold value or not, and/or judging whether the duration measurement time under the current water level reaches a second preset threshold value or not.
6. The intelligent water level control apparatus based on the cosmic ray muon flux according to claim 5, wherein said central processor, when executing said S2, is specifically configured to: And when the target water level value is lower than the actual water level value, controlling the drainage system to start.
7. The intelligent water level control device based on cosmic ray muon flux according to claim 1, wherein in S3, acquisition and monitoring are performed based on muon flux data detected by the muon detector in real time, comprising: s31, dynamic threshold compensation processing, namely correcting original flux data detected by the muon detector in real time based on environmental temperature and humidity parameters; S32, extracting space-time characteristics, carrying out wavelet transformation analysis on the time sequence muon flux data corrected in the S31, and extracting statistical characteristics of the time sequence muon flux data; And S33, carrying out multi-source data fusion decision, applying a D-S evidence theory, fusing the features extracted in the step S32 and the monitoring data from the liquid level meter, generating comprehensive confidence coefficient for evaluating the data quality, and participating in the judgment in the step S3 based on the confidence coefficient.
8. The intelligent level control apparatus based on the cosmic ray muon flux according to claim 1, wherein the preset measurement sequence is a series of discrete water level values starting from an initial water level and increasing to a maximum water level in fixed steps.
9. The intelligent cosmic ray muon flux-based water level control device according to any of claims 1 to 8, wherein said central processor is further configured to, after completion of all preset measurement sequences, fit and generate a water level-muon flux attenuation calibration model based on the relation between muon flux data collected at each water level point and the corresponding water level height.
10. An intelligent water level control method based on the cosmic ray muon flux, which is characterized in that an intelligent water level control device based on the cosmic ray muon flux according to any one of claims 1 to 9 is adopted and the closed loop control flow is executed.

Description

Intelligent water level control device and method based on cosmic ray muon flux Technical Field The invention relates to the intersection of a particle detection technology and a hydrologic monitoring technology, in particular to an intelligent water level control device and method based on cosmic ray muon flux. Background Cosmic ray muon (muon) as a natural energetic particle source is able to penetrate thicker layers of matter, with a determined relationship in the extent of flux attenuation to the density and thickness of the matter traversed. Based on this principle, muon imaging techniques have been explored for imaging internal structures of large or difficult to access targets (e.g., volcanic, pyramidal, underground), as well as monitoring changes in their internal density or packing. This technique presents the potential advantage of non-contact, wide coverage in terms of reservoir or level monitoring of liquids, especially water. Existing monitoring methods based on the water level or density of cosmic ray muon generally adopt a scheme of deploying a static muon detector array near or below an object to be detected (such as a reservoir and an experimental water tank). The basic technical path is that the muon flux data passing through the target object is passively and continuously acquired in a specific time period, and the average water level or density change of the target object is inverted by analyzing the change of the average flux relative to a known reference state (such as a vacant state) in the time period or comparing the average flux with a flux-water level relation curve obtained through analog calculation or limited calibration in advance. The method is essentially a macroscopic, integral measurement, relies on statistical averaging of long time series data to overcome random fluctuations in muon events, and is suitable for quasi-static processes where the monitoring period of variation is much longer than the data acquisition period. However, existing solutions expose fundamental limitations when applying this technique to scenarios that require active, precise control of experimental variables (e.g., water levels) to build high-confidence physical models. First, the experimental approach is passive and inefficient. Because the detector array is fixed and the measuring process is passive, researchers cannot actively, quickly and accurately adjust the target water level, and only can change the water level state depending on a natural process or complicated manual operation. This makes it very long (typically months or more) to build a "water depth-flux" calibration curve covering the full range and of high data quality. Over a lengthy measurement period, changes in environmental factors (e.g., temperature, humidity, barometric pressure) inevitably introduce systematic interference, which is coupled to the water level change signal, and effective variable separation and control is difficult to achieve, resulting in reduced confidence in the final established causality model. A more central problem is the split nature of the existing system architecture. Currently, the data acquisition system for the muon flux is completely independent of the actuator control system for controlling experimental conditions (e.g., water level). Software functionality is typically limited to data logging and post-hoc offline analysis, forming an "open loop" system. The data acquisition system cannot feed back the real-time acquired muon flux statistical characteristics (such as the counting rate and uncertainty thereof) to the control loop, and accordingly, the control system cannot intelligently and adaptively adjust the experimental strategy according to the real-time feedback information. For example, the system cannot dynamically determine whether to extend the measurement time or switch to the next water level according to the full degree of the current water level data acquisition (e.g. whether the statistical error has reached the preset accuracy requirement), and cannot execute a preset complex experimental procedure including condition judgment. The physical and logical separation of the data flow and the control flow is a fundamental bottleneck that the existing scheme is difficult to realize efficient, intelligent and dynamic response active measurement experiments. Disclosure of Invention Based on this, it is necessary to provide an intelligent water level control device and method based on cosmic ray muon flux, which can solve the problems of system fracture and intelligent deletion, aiming at the problems of obvious defects in the prior water level monitoring technology based on passive muon detection when facing to the modern precision experiment or real-time monitoring application which requires active control variables, rapidly acquires calibration data and has dynamic decision capability. The invention provides an intelligent water level control device based on cosmic ray muon flux, whic