CN109374444B - Intelligent pumice detection device and method - Google Patents
Intelligent pumice detection device and method Download PDFInfo
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- CN109374444B CN109374444B CN201811357295.2A CN201811357295A CN109374444B CN 109374444 B CN109374444 B CN 109374444B CN 201811357295 A CN201811357295 A CN 201811357295A CN 109374444 B CN109374444 B CN 109374444B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
Abstract
The invention discloses an intelligent pumice detection device and method, belonging to the technical field of top plate pumice prediction, wherein the intelligent detection device comprises an impact device, a data monitoring device and a signal processing terminal; the impact device comprises an impact head, a cylinder, a valve and a spring, and the data monitoring device comprises a vibration sensor for monitoring and sending impact vibration data of the top plate pumice and an audio sensor for sending impact audio data of the top plate pumice; the signal processing terminal comprises a signal preprocessing system, a judging system and a display system. The invention can efficiently, accurately and intelligently detect the suspension state of the pumice on the top plate, reduce the danger of knocking the help and asking the top and improve the working efficiency.
Description
Technical Field
The invention relates to the technical field of top plate pumice prediction, in particular to an intelligent pumice detection device and method.
Background
After the ore is mined, the overlying rock layer loses support, and the original stress balance state before the ore is not mined is damaged. Due to the action of gravity, the rock mass has a tendency of falling, and the hidden danger of roof fall is increased by the complex geological structure and the vibration of mining, digging and blasting.
The improper treatment of pumice stone, the inexperienced removal of workers and techniques, the incomplete inspection, carelessness or even no inspection, are one of the accidents of roof fall and casualty. The 'knocking help and asking top' is a flexible and effective method for detecting the pine stones, and is a main method used at home and abroad at present. But crowbars have certain limitations when inspecting and processing loose stones. Some foreign mines also use ultrasonic detection, infrared radiation detection and other means when knocking help and asking for help, and national mines obviously have the defects of incomplete pumice detection, threat to the life safety of detection personnel during detection and the like due to the limitation of conditions such as technology, economy and the like.
Therefore, how to detect the suspension state of the pumice stone on the top plate efficiently, accurately and intelligently is a problem to be solved by those skilled in the art.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the intelligent pumice detection device and method, which are reasonable in design, overcome the defects of the prior art and have good effects.
In order to achieve the purpose, the invention adopts the following technical scheme:
an intelligent pumice detection device comprises an impact device, a data monitoring device and a signal processing terminal;
an impact device configured to impact the detected top plate pumice stone, providing impact work;
the data monitoring device comprises a vibration sensor and an audio sensor, wherein the vibration sensor is configured to be used for monitoring and transmitting vibration data of the top plate pumice impacted; an audio sensor configured to monitor and transmit audio data of the top plate pumice stone impact;
the signal processing terminal comprises a signal preprocessing system, a judging system and a display system; a first functional relation, a second functional relation and a third functional relation for judging the suspension state of the pumice stone on the top plate are pre-stored;
a first functional relationship configured to describe a relationship between vibration data and audio data of the top plate pumice stone impacted by the impact and a suspension state of the top plate pumice stone; a second functional relation configured to describe a relation between an audio amplitude and a vibration amplitude of the top plate pumice stone impacted so as to further judge the suspension state of the top plate pumice stone; a third functional relationship provided with an alert value configured to determine whether the function value is greater than the alert value based on the top plate pumice suspension status function value;
the signal preprocessing system is configured to receive and pre-store vibration data and audio data of the top plate pumice impacted, perform noise filtering processing on the pre-stored vibration data and audio data, and preliminarily judge the suspension state of the top plate pumice through a first functional relation;
a determination system configured for determining a pendulous state of the top plate pumice stone according to the second functional relationship; judging whether the suspension state of the top plate pumice reaches a preset warning value or not according to the third functional relation, and obtaining a conclusion that the pumice is about to fall when the suspension state of the top plate pumice reaches the preset warning value, so as to predict the safety of the top plate pumice state;
and the display system has a graph and situation display function and is configured to display the overall shape, the crack depth, the inclination angle and the quantity of the pumice and display whether the pumice reaches an alert value.
Preferably, the impact device comprises an impact head, a cylinder, a valve and a spring, wherein the impact head is positioned at the front end of the impact device, and the cylinder, the valve and the spring are sequentially distributed in the impact device from top to bottom.
Preferably, the audio sensor comprises an audio monitoring unit and an audio transmission unit; an audio monitoring unit configured to monitor audio data of the top pumice stone impacted; an audio transmission unit configured to transmit an audio data signal in which the top plate pumice is impacted.
Preferably, the vibration sensor comprises a vibration monitoring unit and a vibration transmission unit; the vibration monitoring unit is configured to be used for monitoring vibration data of the top plate pumice impacted; and the vibration transmission unit is configured to be used for transmitting a vibration data signal when the top plate pumice is impacted.
Preferably, the vibration data of the top plate pumice stone impacted comprises vibration amplitude, vibration frequency and vibration duration; the audio data of the top plate pumice stone impact includes audio frequency, audio amplitude and duration.
Preferably, the vibration sensor and the audio sensor are used for obtaining the crack state in the corresponding rock by simulating the same vibration frequency spectrum and the same sound frequency spectrum through experiments according to the sound emitting characteristic of the impacted body and the vibration characteristic rebounded by the impactor caused by impact, so that the crack state in the impacted pumice is judged.
Preferably, the first functional relationship includes, in the audio portion, a frequency corresponding to the maximum amplitude, the number of audio peaks, and a frequency domain corresponding to a multi-peak spectrum with a better connection condition; the vibration amplitude is included in the vibration section.
Preferably, the second functional relationship is the ratio of the amplitude of the sound of the impact on the top-plate pumice stone to the amplitude of the vibration, i.e. the ratio of the amplitude of the sound of the impact on the top-plate pumice stone to the amplitude of the vibration
Wherein gamma is the ratio of the sound frequency amplitude and the vibration amplitude of the impact on the pumice on the top plate, A1For the sound frequency amplitude of impact on the top-plate pumice, A2For the pumice stone on the top plate being shocked by impactAmplitude of vibration.
Preferably, the third functional relation is that according to the lithology properties of different pumice stones, the dropping function value of the lithology pumice stone is measured through experiments, and is multiplied by the reduction coefficient to obtain the warning value.
In addition, the invention also provides an intelligent pumice detection method, which adopts the intelligent pumice detection device and comprises the following steps:
step 1: constructing a first functional relation of the vibration data of the top plate pumice under impact, the audio data and the suspension state of the top plate pumice, and a second functional relation of the ratio of the audio amplitude of the top plate pumice under impact to the vibration amplitude to further judge the suspension state of the top plate pumice, and a third functional relation of whether the suspension state of the top plate pumice reaches a drop warning value or not;
step 2: monitoring the vibration data and the audio data of the top plate pumice impacted by the data monitoring device, and obtaining the data of the basic suspension state of the top plate pumice according to the first functional relation;
and step 3: and judging the suspension state of the monitored top plate pumice according to the second functional relation, judging whether the suspension state of the top plate pumice reaches a preset warning value or not according to the third functional relation, if so, giving a red alarm, immediately processing the top plate pumice, and if not, outputting the suspension state of the top plate pumice through a display system.
The invention has the following beneficial technical effects:
the invention can efficiently, accurately and intelligently detect the suspension state of the pumice on the top plate, reduce the danger of knocking the help and asking the top and improve the working efficiency.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent pumice stone detection device disclosed by the invention.
Fig. 2 is a flow chart of the intelligent pumice stone detection method disclosed by the invention.
Wherein, 1-impact head; 2-a cylinder; 3-a valve; 4-a spring; 5-a vibration sensor; 6-an audio sensor; 7-signal processing terminal.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
example 1:
as shown in fig. 1, an intelligent pumice detection device comprises an impact device, a data monitoring device and a signal processing terminal 7, wherein the impact device comprises an impact head 1, a cylinder 2, a valve 3, a spring 4 and the like, the data monitoring device comprises a sensor 5 for monitoring and sending impact vibration data of the pumice on the top plate and an audio sensor 6 for sending audio data of the pumice on the top plate; the signal processing terminal 7 includes a signal preprocessing system, a judgment system, and a display system.
Through the data monitoring device, the vibration data that the roof pumice receives the impact, the audio data that the roof pumice received the impact are monitored and sent. The signal preprocessing system is used for filtering noise of signal data after receiving shock data of the top plate pumice impacted and audio data of the top plate pumice impacted, bringing the data into a first functional relation, preliminarily judging the suspension state of the top plate pumice, and further judging whether the suspension state of the top plate pumice reaches a preset warning value or not according to a second functional relation and a third functional relation by the judging system. Specifically, the signal preprocessing system receives vibration signal data and audio signal data of the top plate pumice caused by impact, prestores the vibration signal data and the audio signal data, performs noise filtering on the prestores the signal data, brings the vibration signal data and the audio signal data into a first function respectively, and can preliminarily judge the suspension state of the top plate pumice through the first function relation; the judgment system further judges the suspension state of the top plate pumice according to the ratio of the audio frequency amplitude to the vibration amplitude of the impacted body; and judging whether the suspension state of the pumice stone on the top plate reaches a preset warning value or not according to the third functional relation, and obtaining a conclusion that the pumice stone is about to fall when the suspension state of the pumice stone on the top plate reaches the preset warning value so as to predict the safety of the pumice stone state of the top plate. The display system comprises a graph and situation display function, namely, the whole form, the crack depth, the dip angle, the quantity and the like of the pumice are displayed, whether the pumice reaches an alert value or not is displayed, if the pumice reaches the alert value, a red alarm is sent, and at the moment, the pumice on the top plate needs to be immediately processed.
Referring to fig. 1, the data monitoring device includes a vibration sensor 5 and an audio sensor 6. The vibration sensor 5 is used for monitoring impact vibration data of the top plate pumice, and the monitoring vibration data comprises vibration speed, frequency, acceleration and the like. Specifically, the vibration sensor 5 comprises a monitoring unit for monitoring vibration data of the top plate pumice and a transmission unit for sending the vibration data of the top plate pumice, and when the vibration monitoring unit receives the vibration of the top plate pumice, the resistance value arranged in the vibration monitoring unit can be changed by different amplitudes and frequencies, so that the monitoring effect is achieved; the vibration transmission unit puts the changed resistance value into a voltage division circuit, and converts the vibration signal into an electric signal to be transmitted. The audio sensor 6 is used for monitoring the impact audio data of the pumice stone, and the monitoring audio data comprises sound frequency, amplitude and the like. The audio sensor 6 comprises a monitoring unit for monitoring the audio data of the impact on the top plate pumice and a transmission unit for transmitting the audio data of the impact on the top plate pumice.
And the signal preprocessing system of the signal processing terminal 7 receives and prestores the received vibration signal data and the audio signal data, and performs noise filtering processing on the prestores signal data. Specifically, after receiving and pre-storing vibration signal data and audio vibration data, the signal preprocessing system adopts built-in MATLAB software to eliminate polynomial trend and smooth the signal data so as to obtain a smooth high-quality signal curve after noise filtering and high-quality vibration signal preprocessing data.
And the judgment system of the signal processing terminal 7 obtains the final suspension characteristic value of the pumice according to the second functional relation and the third functional relation of the ratio of the audio amplitude and the vibration amplitude of the impacted body. Specifically, the judgment system sets two functions, the second function is to calculate the ratio of the audio amplitude and the vibration amplitude of the impacted body, so that the suspension state of the top plate pumice is amplified, and on the other hand, the suspension state of the top plate pumice and the suspension state of the top plate pumice judged by the evidence according to the first function are judged; and setting an alarm value according to the third functional relation, judging whether the function value of the suspended state of the top plate pumice is greater than the alarm value, if so, giving a red alarm, immediately processing the top plate pumice, and if not, outputting the suspended state of the top plate pumice through a display system.
The display system of the signal processing terminal 7 has the functions of displaying graphs and situations, namely displaying the overall shape of the pumice, the crack depth, the inclination angle, the number and the like of the pumice, and displaying the falling situation of the pumice. Specifically, the display system includes several basic operation interfaces: menus, views, tools, etc.; the menu interface comprises system setting, system self-checking, system information, user management and record management, and the view interface comprises the functions of displaying the whole form of the pumice, amplifying or reducing the view interface of the pumice, rotating the angle of the pumice interface, adjusting the transparency of the interface and the like; the tool interface comprises the steps of carrying out some basic operations on the view interface, modifying parameter settings, changing a working space, drawing a graph and the like.
Example 2:
on the basis of the above embodiment 1, the present invention further provides an intelligent pumice stone detection method, the flow of which is shown in fig. 2, and the method includes the following steps:
step 1: constructing a first function relation of the vibration data and the audio data of the top plate pumice under impact and the suspension state of the top plate pumice, and further judging a second function relation of the suspension state of the top plate pumice and a third function relation of whether the suspension state of the top plate pumice reaches a drop warning value or not according to the ratio of the audio amplitude and the vibration amplitude of the top plate pumice under impact;
step 2: monitoring the vibration data and the audio data of the top plate pumice impacted by the data monitoring device, and obtaining the data of the basic suspension state of the top plate pumice according to the first functional relation;
the monitoring of the current impact vibration data of the top plate pumice and the current impact audio data of the top plate pumice is executed after receiving a monitoring instruction. Specifically, the monitoring of the data of the impact shock and the audio data of the pumice on the top plate is carried out after receiving a monitoring instruction sent by the signal preprocessing system, and the data are stored in the signal preprocessing system in the period, so that the monitoring process is more favorably controlled;
and step 3: and judging the suspension state of the monitored top plate pumice according to the second functional relation, judging whether the suspension state of the top plate pumice reaches a preset warning value or not according to the third functional relation, if so, giving a red alarm, immediately processing the top plate pumice, and if not, outputting the suspension state of the top plate pumice through a display system.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (2)
1. The utility model provides a pumice intellectual detection system device which characterized in that: the system comprises an impact device, a data monitoring device and a signal processing terminal;
an impact device configured to impact the detected top plate pumice stone, providing impact work;
the data monitoring device comprises a vibration sensor and an audio sensor, wherein the vibration sensor is configured to be used for monitoring and transmitting vibration data of the top plate pumice impacted; an audio sensor configured to monitor and transmit audio data of the top plate pumice stone impact;
the signal processing terminal comprises a signal preprocessing system, a judging system and a display system; a first functional relation, a second functional relation and a third functional relation for judging the suspension state of the pumice stone on the top plate are pre-stored;
a first functional relationship configured to describe a relationship between vibration data and audio data of the top plate pumice stone impacted by the impact and a suspension state of the top plate pumice stone; a second functional relation configured to describe a relation between an audio amplitude and a vibration amplitude of the top plate pumice stone impacted so as to further judge the suspension state of the top plate pumice stone; a third functional relationship provided with an alert value configured to determine whether the function value is greater than the alert value based on the top plate pumice suspension status function value;
the signal preprocessing system is configured to receive and pre-store vibration data and audio data of the top plate pumice impacted, perform noise filtering processing on the pre-stored vibration data and audio data, and preliminarily judge the suspension state of the top plate pumice through a first functional relation;
a determination system configured for determining a pendulous state of the top plate pumice stone according to the second functional relationship; judging whether the suspension state of the top plate pumice reaches a preset warning value or not according to the third functional relation, and obtaining a conclusion that the pumice is about to fall when the suspension state of the top plate pumice reaches the preset warning value, so as to predict the safety of the top plate pumice state;
the display system has a graph and situation display function and is configured to display the whole form, the crack depth, the inclination angle and the quantity of the pumice and display whether the pumice reaches an alert value;
the impact device comprises an impact head, an air cylinder, a valve and a spring, wherein the impact head is positioned at the front end of the impact device, and the air cylinder, the valve and the spring are sequentially distributed in the impact device from top to bottom;
the audio sensor comprises an audio monitoring unit and an audio transmission unit; an audio monitoring unit configured to monitor audio data of the top pumice stone impacted; an audio transmission unit configured to transmit an audio data signal in which the top plate pumice is impacted;
the vibration sensor comprises a vibration monitoring unit and a vibration transmission unit; the vibration monitoring unit is configured to be used for monitoring vibration data of the top plate pumice impacted; a vibration transmission unit configured to transmit a vibration data signal of the top plate pumice stone impacted;
the vibration data of the top plate pumice stone subjected to impact comprises vibration amplitude, vibration frequency and vibration duration; the audio data of the top plate pumice stone impacted comprises audio frequency, audio amplitude and duration;
the vibration sensor and the audio sensor simulate the same vibration frequency spectrum and audio frequency spectrum through experiments according to the characteristics of sound emitted by an impacted body and the vibration characteristics of rebounding of the impactor, so as to obtain the crack state in the corresponding rock, thereby judging the crack state in the impacted roof pumice;
the first functional relation comprises the frequency corresponding to the maximum amplitude, the number of audio peaks and the frequency domain corresponding to the multi-peak frequency spectrum with better connection condition in the audio part; the vibration part comprises vibration amplitude;
the second functional relationship is the ratio of the sound frequency amplitude and the vibration amplitude of the impact on the pumice stone of the top plate, i.e.
Wherein gamma is the ratio of the sound frequency amplitude and the vibration amplitude of the impact on the pumice on the top plate, A1For the sound frequency amplitude of impact on the top-plate pumice, A2The amplitude of impact vibration of the pumice on the top plate is shown;
and the third functional relation measures the falling function value of the pumice rock through experiments according to the lithological properties of different pumice rocks, and multiplies the falling function value by a reduction coefficient to obtain an alarm value.
2. An intelligent pumice stone detection method is characterized in that: the intelligent pumice stone detection device of claim 1, comprising:
step 1: constructing a first functional relation of the vibration data of the top plate pumice under impact, the audio data and the suspension state of the top plate pumice, and a second functional relation of the ratio of the audio amplitude of the top plate pumice under impact to the vibration amplitude to further judge the suspension state of the top plate pumice, and a third functional relation of whether the suspension state of the top plate pumice reaches a drop warning value or not;
step 2: monitoring the vibration data and the audio data of the top plate pumice impacted by the data monitoring device, and obtaining the data of the basic suspension state of the top plate pumice according to the first functional relation;
and step 3: and judging the suspension state of the monitored top plate pumice according to the second functional relation, judging whether the suspension state of the top plate pumice reaches a preset warning value or not according to the third functional relation, if so, giving a red alarm, immediately processing the top plate pumice, and if not, outputting the suspension state of the top plate pumice through a display system.
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| JPH09243412A (en) * | 1996-03-06 | 1997-09-19 | Hitachi Ltd | Object-monitoring system |
| JPH10307128A (en) * | 1997-05-08 | 1998-11-17 | Takenaka Komuten Co Ltd | Method for predicting slope disaster by acoustic emission technology |
| JP3975407B2 (en) * | 2005-02-16 | 2007-09-12 | 国立大学法人山口大学 | Disaster prevention business plan support system |
| JP4997444B2 (en) * | 2007-03-01 | 2012-08-08 | 国土交通省近畿地方整備局長 | Rockfall risk assessment system |
| JP2009287923A (en) * | 2008-05-27 | 2009-12-10 | Railway Technical Res Inst | Method and apparatus for evaluating unstableness of rock mass on slope of rock bed |
| JP5504058B2 (en) * | 2010-06-03 | 2014-05-28 | 東日本高速道路株式会社 | Falling rock risk determination method and apparatus, and program |
| JP5882181B2 (en) * | 2012-10-30 | 2016-03-09 | 公益財団法人鉄道総合技術研究所 | Stability evaluation method of rock mass in rock slope by sound measurement |
| CN103646514B (en) * | 2013-12-16 | 2016-01-06 | 湖南华中灾害预警研究开发有限公司 | Debris flow early-warning sensing device, system and method is detected based on wireless self-networking group |
| CN105068113B (en) * | 2015-07-21 | 2018-01-09 | 中国铁道科学研究院铁道建筑研究所 | Judge the method for side slope danger float stone |
| JP2017151680A (en) * | 2016-02-24 | 2017-08-31 | 西日本旅客鉄道株式会社 | Falling rock management system |
| CN108169328A (en) * | 2017-12-27 | 2018-06-15 | 山东理工大学 | A kind of ore pillar long-time stability monitor and its installation method |
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