A Method for Differentiating Ground Vibration Signal Interference Applied to Underground Excavation System

A vibration signal and earthquake vibration technology, which is applied in the field of distinguishing ground vibration signal interference and anti-interference in underground excavation systems, can solve problems such as high false alarm rate, false early warning, and normal monitoring interference of underground excavation systems, so as to reduce false alarm rate, The effect of enhancing the effect

Inactive Publication Date: 2019-04-19
山西西部湾电子科技有限公司
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Problems solved by technology

Earthquake signals are also generated when vehicles and people walk on the ground. After being sensed by the micro-vibration-based underground excavation monitoring system, false alarms are issued, resulting in a high false alarm rate and serious interference to the normal monitoring of the underground excavation system.

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  • A Method for Differentiating Ground Vibration Signal Interference Applied to Underground Excavation System

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[0007] Below in conjunction with accompanying drawing this method is described further:

[0008] A method for distinguishing ground vibration signal interference applied to an underground excavation system, comprising the following steps:

[0009] First, set up at least two earthquake detectors in the monitoring area , ,Such as figure 1 As shown, when the target motion is detected, the time information when the target passes through each earthquake detector monitoring area is collected, and the relationship between displacement and time is used to calculate the speed according to formula (1):

[0010] (1);

[0011] is the average value of the target movement speed, As the target moves through the ground motion detector The installation point is the starting point, to the earthquake detector The time required until the point of installation; earthquake detector with earthquake detector distance between and the distance the target moved during this time ...

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Abstract

The invention provides a method applied to an underground excavation system to differentiate ground vibration signal interference. The method comprises the following steps: arranging more than two ground vibration detectors within a monitoring area; when a target advances, collecting time information when the target passes the monitoring area of each ground vibration detector; as the distance between the two ground vibration detectors are known, calculating the average speed of the target passing the monitoring areas of the two ground vibration detectors by utilizing the relationship between displacement and speed and between time and speed; and judging the cause of generating ground vibration signals through the average speed. According to the method provided by the invention, the characteristic that the difference between the speed of underground excavation and the speed of ground vehicles and personnel is relatively great is utilized, the collected ground vibration signals are judged and differentiated through calculating the speed of the target, accordingly, the efficiency of utilizing micro vibration to perform underground monitoring is improved, and the false alarm rate is reduced greatly.

Description

technical field [0001] The invention belongs to the technical field of underground safety monitoring, and relates to an anti-interference method for an underground excavation system, in particular to a method for distinguishing ground vibration signal interference applied to an underground excavation system. Background technique [0002] At present, there are many ways and means of security monitoring on the ground in my country, including the use of image monitoring, infrared detection, microwave detection, acoustic detection, ultrasonic detection, vibration intrusion detectors and other technologies and equipment for monitoring, the effect is very obvious, but for the use of underground excavation However, it is difficult to effectively monitor and prevent illegal and criminal acts such as theft, smuggling, and prison escape, and they are often discovered after the fact, with obvious lag. Therefore, many universities and scientific research institutions in China are activel...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00G01P3/64
CPCG01H17/00G01P3/64
Inventor 秦栋泽刘哲宋丽萍王艳华杨志良焦谦裴水源赵田丽
Owner 山西西部湾电子科技有限公司
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