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Buried pipeline excavation prevention monitoring and early warning method

A technology for monitoring and early warning, buried pipelines, applied in the direction of alarms, instruments, etc., can solve the problems of low accuracy and poor prevention, and achieve the effect of preventing damage and efficient safety protection

Active Publication Date: 2019-11-26
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present application provides a buried pipeline anti-excavation monitoring and early warning method, which solves the problems of low accuracy and poor preventability in the prior art

Method used

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  • Buried pipeline excavation prevention monitoring and early warning method
  • Buried pipeline excavation prevention monitoring and early warning method
  • Buried pipeline excavation prevention monitoring and early warning method

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Experimental program
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Embodiment 1

[0033] figure 1 It is a flow chart of the monitoring and early warning method for excavation prevention of buried pipelines.

[0034] A buried pipeline anti-excavation monitoring and early warning method, comprising the following steps:

[0035] Step 101, collect background noise signals, and calculate an interference-related threshold.

[0036] In step 101, the background noise signal is collected under the condition of no excavation, and the median value and the mean value are respectively taken for the N groups of background noise data collected per unit time to obtain the median value interference data and the mean value interference data, which are collectively referred to as the background noise interference data. The background noise interference data constitutes the background interference database, and the cross-correlation coefficient of each two groups of data in the background interference database is calculated, and the interference correlation threshold is obtai...

Embodiment 2

[0064] figure 2 It is a flow chart of another embodiment of the monitoring and early warning method for excavation prevention of buried pipelines.

[0065] Step 101, collect background noise signals, and calculate an interference-related threshold.

[0066] Step 102 , collect excavation signals, and calculate a discrimination threshold between no excavation signals and excavation signals.

[0067] Step 103, collecting the measured signal, and judging whether it is an excavation signal.

[0068] Step 104 , by measuring the quadratic correlation in the composite transform domain of the excavation signal, it is determined whether the excavation signal is a mechanical excavation signal or an artificial excavation signal.

[0069] In step 104, the identified excavation signals are respectively calculated with the mechanical excavation signals and manual excavation signals in the excavation database one by one to calculate the quadratic correlation measurement coefficient in the ...

Embodiment 3

[0081] image 3 It is a flow chart of the third embodiment of the buried pipeline anti-excavation monitoring and early warning method.

[0082] Step 101, collect background noise signals, and calculate an interference-related threshold.

[0083] Step 102 , collect excavation signals, and calculate a discrimination threshold between no excavation signals and excavation signals.

[0084] Step 103, collecting the measured signal, and judging whether it is an excavation signal.

[0085] Step 105, updating the parameters and database of the excavation signal monitoring and early warning model.

[0086] In step 105, if the interference signal is judged as an excavation signal, the measured signal is added to the background interference database, and the parameter T c and T yn .

[0087] In practice, if the interference signal is identified as an excavation signal, the measured signal is added to the background interference database, and steps 101 and 102 are repeated to update ...

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Abstract

The invention discloses a buried pipeline excavation prevention monitoring and early warning method, which solves the problem of low accuracy and poor prevention in the prior art. The method comprisesthe steps of acquiring a background noise signal, and calculating an interference related threshold; collecting an excavation signal, and calculating a discrimination threshold for the existence of the excavation signal; and collecting an actual measurement signal, and judging whether the actual measurement signal is an excavation signal or not. According to the invention, the buried pipeline excavation prevention monitoring and early warning method is realized by constructing an excavation signal monitoring and early warning model, excavation signals around the pipeline can be monitored in real time, once it is monitored that there is an excavation event, an alarm is given immediately, the excavation type can be accurately judged, and a basis is provided for subsequent emergency treatment decision making. According to the method, important pipe sections of old pipelines can be efficiently protected, early warning is performed on the damage of the pipelines through the excavation alarm, and the pipelines are effectively prevented from being damaged.

Description

technical field [0001] The present application relates to the field of signal detection and pattern recognition, in particular to a monitoring and early warning method for excavation prevention of buried pipelines. Background technique [0002] Urban underground pipelines are important infrastructure related to the national economy and the people's livelihood. Once they are excavated and damaged, they will cause serious economic losses and hidden safety hazards. For newly-built pipelines, the method of laying optical cables in the same ditch is generally adopted, and real-time detection of earthquake signals is used to monitor and warn of excavation damage to pipelines. However, for a large number of old pipelines, the cost of adding optical cables is high, and it is easy to cause damage to the pipelines. The commonly used method is to install a noise sensor on the outer wall of the pipeline and bury a signal analyzer near the pipeline. When illegal excavation activities ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B29/18
CPCG08B29/188
Inventor 郭慧杰王超楠李雪杨帆
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT