CN-121982843-A - Water resource anti-theft and anti-damage system and method based on intelligent sensor

CN121982843ACN 121982843 ACN121982843 ACN 121982843ACN-121982843-A

Abstract

The application provides an intelligent sensor-based water resource anti-theft and anti-damage system and an intelligent sensor-based water resource anti-theft and anti-damage method, which relate to the technical field of sensors. And extracting a path discrimination characteristic parameter set for representing the physical path of the water flow based on the characteristic component, comparing the path discrimination characteristic parameter set with a pre-established metering main standard characteristic parameter set and a bypass standard characteristic parameter set, and outputting the water flow path identifier. The sensor node uploads the discrimination result, the time stamp and the evidence fragment index to the management platform through the industrial Internet edge gateway, so that remote alarm, evidence collection and operation and maintenance management are realized, the recognition accuracy of the water getting around the table is improved, and false alarm is reduced.

Inventors

CAO YONGKANG
Man Zhanjie
SHI GUOHUI
SHAO WENBIN
WANG FANG

Assignees

新疆禹拓物联科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260202

Claims (10)

1. The water resource anti-theft and anti-damage method based on the intelligent sensor is characterized by comprising the following steps of: Collecting vibration signals of a water taking pipeline; Responding to the water taking device in an operating state, and carrying out decoupling treatment on the vibration signal to inhibit common-mode vibration components to obtain characteristic components, wherein the common-mode vibration components are vibration components meeting preset consistency conditions in the vibration signal, and the characteristic components are residual vibration components after the common-mode vibration components are removed; extracting a path discrimination feature parameter set for characterizing a water flow path based on the feature component; The method comprises the steps of obtaining a path discrimination standard, wherein the path discrimination standard comprises a main metering standard characteristic parameter set and a bypass standard characteristic parameter set, comparing the path discrimination characteristic parameter set with the path discrimination standard, and determining and outputting a water flow path identifier based on a comparison result.
2. The intelligent sensor-based water resource anti-theft and anti-damage method according to claim 1, wherein the step of collecting vibration signals of the water intake pipeline comprises the steps of: Synchronously acquiring at least two paths of vibration samples in the same sampling window, and performing time alignment on the at least two paths of vibration samples; Monitoring with low power consumption by a first sampling strategy, and writing vibration samples during monitoring into a local annular cache; And responding to the detection of the vibration event meeting the preset triggering condition, switching to a second sampling strategy, and extracting a vibration signal segment with preset duration from the annular buffer memory back to serve as the vibration signal.
3. The intelligent sensor-based water resource anti-theft and anti-damage method according to claim 2, wherein the acquisition of the vibration signal of the water intake pipeline is performed by a sensor node, the sensor node comprises an operation reference channel and a path sensitive channel; The running reference channel is used for collecting running reference vibration signals, and the path sensitive channel is used for collecting path sensitive vibration signals; the decoupling the vibration signal includes: the common mode vibration component is determined based on the running reference vibration signal, and common mode suppression is performed on the path-sensitive vibration signal to obtain the characteristic component.
4. A water resource theft protection and damage protection method based on intelligent sensor according to claim 3, wherein the preset consistency condition comprises one or more of the following: the correlation coefficient of the running reference vibration signal and the path sensitive vibration signal in the same sampling window is not smaller than a preset correlation coefficient threshold; the coherence of the running reference vibration signal and the path sensitive vibration signal is not less than a preset coherence threshold; The frequency spectrum similarity of the operation reference vibration signal and the path sensitive vibration signal is not smaller than a preset similarity threshold value; The phase difference between the running reference vibration signal and the path sensitive vibration signal falls into a preset phase range.
5. The intelligent sensor-based water resource theft and damage prevention method of claim 1, further comprising, prior to extracting the set of path discrimination feature parameters for characterizing the water flow path: acquiring a topological parameter set of a water sampling pipeline, and determining at least one group of candidate resonance frequency bands based on the topological parameter set; The topological parameter set comprises equivalent length parameters, elbow number parameters and pipe diameter parameters of the metering main path and the bypass path respectively; The extracting the path discrimination characteristic parameter set for representing the water flow path comprises the following steps: and carrying out frequency domain analysis or time-frequency analysis on the characteristic components in the frequency domain range limited by the candidate resonance frequency bands, and generating the path discrimination characteristic parameter set according to analysis results.
6. The smart sensor-based water resource theft protection and tamper protection method of claim 5, wherein said determining at least one set of candidate resonance bands comprises: determining the candidate resonance frequency band based on the topological parameter set and a preset frequency band mapping relation, wherein the preset frequency band mapping relation comprises one or more of the following steps: Determining candidate center frequency based on the equivalent length parameter of the pipeline and determining candidate bandwidth by combining the pipe diameter parameter; applying a correction to the candidate center frequency or the candidate bandwidth based on the bend number parameter; At least two sets of candidate resonance bands for distinguishing the metering main path from the bypass are determined based on a topological parameter difference of the metering main path and the bypass.
7. The intelligent sensor-based water resource theft prevention and damage prevention method of claim 6, wherein said determining the candidate resonance frequency band based on the topology parameter set and a preset frequency band mapping relationship comprises: establishing a first mapping relation between the flow rate and vortex shedding frequency based on the pipe diameter parameter and a preset Stlaugh number, and determining a vortex street excitation frequency band according to a preset flow rate interval; establishing a second mapping relation of the acoustic resonance frequency of the pipeline based on the equivalent length parameter and the sound velocity of the fluid in the pipeline, and determining the fundamental frequency of the pipeline and a higher-order harmonic frequency set thereof; And determining an overlapping interval of the vortex street excitation frequency band and the higher harmonic frequency set on a frequency domain as the candidate resonance frequency band, wherein the overlapping interval is defined as a flow acoustic coupling locking interval.
8. The intelligent sensor-based water resource anti-theft and anti-damage method of claim 7, wherein the extracting the path discrimination feature parameter set for characterizing the water flow path further comprises a damping characterization parameter, the damping characterization parameter comprises at least one of a half-power bandwidth parameter and a quality factor parameter within the hydroacoustic coupling locking interval, and the method further comprises: Determining an along-path loss factor based on equivalent length parameters and pipe diameter parameters in the topological parameter set, determining a local loss correction factor based on the elbow quantity parameters, and determining a reference damping parameter corresponding to the metering main path or the bypass based on the along-path loss factor and the local loss correction factor; and carrying out consistency judgment on the damping characterization parameter and the reference damping parameter, and checking or correcting the comparison result based on a consistency judgment result so as to determine or update the water flow path identifier.
9. The intelligent sensor-based water resource theft and damage prevention method of claim 7, further comprising: in response to the water intake device being in a non-operating state, driving the sensor node to apply an excitation signal to the water intake pipeline and collect a corresponding structural response signal, wherein the frequency coverage range of the excitation signal comprises at least a part of the high-order harmonic frequency set or the candidate resonance frequency band; generating a structural frequency response spectrum based on the structural response signal, and extracting a formant frequency set and an anti-resonance frequency point set from the structural frequency response spectrum; Calculating peak-to-valley pitch distribution characteristics and anti-resonance valley depth indexes based on the formant frequency set and the anti-resonance frequency point set; Comparing the peak-valley spacing distribution characteristics and the anti-resonance valley depth index with a structural coupling standard to obtain a verification result, determining the structural coupling state of the sensor node and the water intake pipeline based on the verification result, and executing anti-damage treatment when the structural coupling state meets a preset abnormal judgment condition.
10. An intelligent sensor-based water resource anti-theft and anti-damage system, which is characterized by comprising: the sensor node module is provided with vibration acquisition capacity and is used for acquiring vibration signals of the water taking pipeline; The processing module is used for performing decoupling processing on the vibration signal when the water taking device is in an operating state so as to inhibit common mode vibration components, obtaining residual vibration components after the common mode vibration components are removed as characteristic components, and extracting a path discrimination characteristic parameter set for representing a water flow path based on the characteristic components; the storage module is used for storing path discrimination references, wherein the path discrimination references comprise a metering main road standard characteristic parameter set and a bypass standard characteristic parameter set; And the judging module is used for comparing the path judging characteristic parameter set with the path judging standard to obtain a comparison result, and determining and outputting a water flow path identifier based on the comparison result.

Description

Water resource anti-theft and anti-damage system and method based on intelligent sensor Technical Field The application relates to the technical field of sensors, in particular to a water resource anti-theft and anti-damage system and method based on an intelligent sensor. Background In the water resource taking and monitoring scene based on the industrial Internet, strong excitation sources such as a water pump, a motor, a valve and the like are usually arranged in a well room, a pump room or a water taking point, and obvious structural vibration and background noise can be superimposed on a water taking pipeline in the operation process. In order to inhibit the actions of water taking around a meter, bypass diversion, damage to a metering device and the like, common engineering practice is to monitor the water meter/flowmeter by relying on metering data, pressure change or simple door magnetism/vibration alarm, and upload alarm information to an industrial internet platform for disposal through a network node. However, such schemes are either insufficiently perceived as to the physical information of "whether water is flowing, which way it is flowing" or are limited by the lack of high-order feature extraction capability of the intelligent sensor by conventional terminals, are highly sensitive to field device vibration noise, are prone to false positives, false negatives, and lack evidence elements for repeatable comparison when review is required. Especially in the scene of water taking around the meter or bypass diversion, the metering information of the metering main way may be abnormally distorted, but the large common mode vibration caused by the operation of the water pump exists on site at the same time, so that the contribution relation between the equipment operation vibration and the flow-induced vibration caused by the water flow passing through the pipeline is difficult to separate only based on the traditional means of vibration amplitude or threshold triggering, and further the physical path of the water flow is difficult to accurately identify, and the problems of high false alarm rate, difficult evidence taking, high remote operation and maintenance cost and the like of water taking around the meter are caused. Based on the above, a technical scheme which can be realized towards the end side of the intelligent sensor and is suitable for industrial internet remote monitoring deployment is needed, and a water flow path identification result can be stably output under the condition of covering strong noise. Disclosure of Invention Aiming at the defects of the prior art, the application provides an intelligent sensor-based water resource anti-theft and anti-damage system and method. In a first aspect, the application provides a water resource anti-theft and anti-damage method based on an intelligent sensor, which comprises the following steps: Collecting vibration signals of a water taking pipeline; Responding to the water taking device in an operating state, and carrying out decoupling treatment on the vibration signal to inhibit common-mode vibration components to obtain characteristic components, wherein the common-mode vibration components are vibration components meeting preset consistency conditions in the vibration signal, and the characteristic components are residual vibration components after the common-mode vibration components are removed; extracting a path discrimination feature parameter set for characterizing a water flow path based on the feature component; The method comprises the steps of obtaining a path discrimination standard, wherein the path discrimination standard comprises a main metering standard characteristic parameter set and a bypass standard characteristic parameter set, comparing the path discrimination characteristic parameter set with the path discrimination standard, and determining and outputting a water flow path identifier based on a comparison result. Optionally, collecting the vibration signal of the water intake pipeline includes: Synchronously acquiring at least two paths of vibration samples in the same sampling window, and performing time alignment on the at least two paths of vibration samples; Monitoring with low power consumption by a first sampling strategy, and writing vibration samples during monitoring into a local annular cache; And responding to the detection of the vibration event meeting the preset triggering condition, switching to a second sampling strategy, and extracting a vibration signal segment with preset duration from the annular buffer memory back to serve as the vibration signal. Optionally, the collecting the vibration signal of the water intake pipeline is performed by a sensor node, and the sensor node comprises an operation reference channel and a path sensitive channel; The running reference channel is used for collecting running reference vibration signals, and the path sensitive channel is used for collecting path sensiti