CN106855492B - Mine Dust Concentration dynamic detection system and Dust Concentration dynamic monitoring method - Google Patents
Mine Dust Concentration dynamic detection system and Dust Concentration dynamic monitoring method Download PDFInfo
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- CN106855492B CN106855492B CN201611093694.3A CN201611093694A CN106855492B CN 106855492 B CN106855492 B CN 106855492B CN 201611093694 A CN201611093694 A CN 201611093694A CN 106855492 B CN106855492 B CN 106855492B
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- ultrasonic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N2015/0096—Investigating consistence of powders, dustability, dustiness
Abstract
The invention discloses a kind of mine Dust Concentration dynamic detection system based on ultrasound and Dust Concentration dynamic monitoring methods, 16 ultrasonic sensors are angularly fixed on the inner wall of inner ring, and each ultrasonic sensor has the function of emitting ultrasonic wave simultaneously and receives ultrasonic wave；All signal wires are commonly connected to be fixed on the multi-pin connector on outer ring, multi-pin connector is connected by shielded multiconductor cable with a program-controlled multi-channel switch, program-controlled multi-channel switch respectively with voltage impulse generator, ultrasonic data acquisition device connection, voltage impulse generator and ultrasonic data acquisition device connection, ultrasonic data acquisition device and data processing centre's connection.Current single-shot list is received into detection mode and is improved to circulation single-shot mostly receipts CT detection pattern, using two kinds of images reflection Dust Concentration distributions of ultrasonic velocity CT and absorption coefficient CT, improves the accuracy of its detection.
Description
Technical field
The present invention relates to ultrasonic detection instrument more particularly to a kind of mine Dust Concentration dynamic detections based on ultrasound
System and Dust Concentration dynamic monitoring method.
Background technique
A large amount of coal dust will be generated during coal mine down-hole tunnel driving and working face mining, especially in Gas Outburst mistake
The a large amount of coal dusts generated in journey will lead to dust explosion accident reaching certain condition, therefore accurate the real time measure shaft production is empty
Between Dust Concentration to prevention and treatment dust explosion accident have great importance.
For ultrasonic wave when penetrating the gas that dust or coal dust is distributed with, ultrasonic velocity and the sound intensity can generate biggish change
Change.The variation of ultrasonic velocity be made due to Mei Chen Cakes in gas presence ultrasonic wave penetrate path length with when no coal dust
Straight path length it is different and caused by；The variation of the ultrasonic wave sound intensity is due to the coal dirt Cakes suctions to ultrasonic energy in gas
Caused by receiving decaying.The relationship of ultrasonic velocity and the sound intensity and Dust Concentration can be obtained by the method in laboratory or field calibration
?.
Coal dust is extremely non-uniform in the distribution of the underground space, and is dynamic change.Current various dust and coal dust
Concentration detection apparatus is mainly the mean intensity value of a certain regional scope.Existing ultrasonic wave dust detector is received using single-shot list
Working method, testing result are the mean intensity values of single ray path, and it is practical lower than part to often result in measured concentration value
Concentration value is not able to satisfy the requirement of accurate detection Dust Concentration spatial distribution in real time, when regional area Dust Concentration being caused to transfinite
And the phenomenon that cannot accurately and timely forecasting.
Summary of the invention
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of mine coal dust based on ultrasound is dense
Dynamic detection system and Dust Concentration dynamic monitoring method are spent, meets image reconstruction in such a way that circulating ultrasonic single-shot is received more
Detection mode, solve the problems, such as space of mine Dust Concentration distribution real-time detection.
In order to solve the above technical problems, the present invention program includes:
A kind of mine Dust Concentration dynamic detection system based on ultrasound comprising Dust Concentration detection cylinder shape chamber
Body, wherein the Dust Concentration detection cylinder shape cavity is made of inner ring and outer rings, and 16 ultrasonic sensors are angularly fixed
In the inner wall of inner ring, each ultrasonic sensor has the function of emitting ultrasonic wave simultaneously and receives ultrasonic wave；The outer wall of inner ring
On be evenly arranged multiple mounting grooves, the signal wire of ultrasonic sensor is laid in corresponding mounting groove, and all signal wires are common
It is connected on the multi-pin connector being fixed on outer ring, multi-pin connector passes through shielded multiconductor cable and a program-controlled multi-channel switch phase
Connection, program-controlled multi-channel switch respectively with voltage impulse generator, ultrasonic data acquisition device connection, voltage pulse
Generator and ultrasonic data acquisition device connection, ultrasonic data acquisition device and data processing centre's connection.
The mine Dust Concentration dynamic detection system, wherein above-mentioned ultrasonic data acquisition device includes A/D acquisition
Plate, charge amplifier, the first I/O interface, the 2nd I/O interface and the 3rd I/O interface, A/D collection plate by the 3rd I/O interface with
Data processing centre's connection, charge amplifier pass through the 2nd I/O interface and data processing centre's connection, charge amplification
Device and A/D collection plate connection, charge amplifier and program-controlled multi-channel switch connection, voltage impulse generator pass through
Synchronous circuit and A/D collection plate connection, voltage impulse generator are connected by the first I/O interface and data processing centre's route
It connects.
The mine Dust Concentration dynamic detection system, wherein above-mentioned data processing centre is computer.
A kind of Dust Concentration dynamic monitoring method using the mine Dust Concentration dynamic detection system comprising following
Step:
A, program-controlled multi-channel switch controls a ultrasonic sensor and is in emission state, control and the supersonic sensing
Other seven ultrasonic sensors that device radiating surface normal and transmitting are received to the angle of line less than 45 ° are in reception state；
Formation meets CT image reconstruction after each ultrasonic sensor in 16 ultrasonic sensors traverses an emission state
Detection pattern；
B, the high-voltage pulse signal that voltage impulse generator generates is input to corresponding ultrasound by program-controlled multi-channel switch
Wave sensor generates ultrasonic wave analog signal, and corresponding other seven of ultrasonic sensor corresponding with this is in the super of reception state
The ultrasonic wave analog signal that sonic sensor receives is input to ultrasonic data acquisition device by program-controlled multi-channel switch,
Digital signal, ultrasonic data acquisition are formed after carrying out charge amplification, decaying, A/D conversion in ultrasonic data acquisition device
Device, which goes out the digital data transmission to data processing centre, carries out data processing.
The Dust Concentration dynamic monitoring method, wherein above-mentioned steps B is specific further include:
Initial value threshold value and analysis time window section of the above-mentioned data processing centre according to setting, at the beginning of automatic identification ultrasonic wave
To time tiAnd peak-peak, Traveltime data file and amplitude data file are formed, then coal dust is obtained by CT image reconstruction algorithm
The VELOCITY DISTRIBUTION of coal dust and absorption coefficient distribution in Concentration Testing cylindrical cavity body region, finally according to Dust Concentration and ultrasonic wave
The calibration result of speed and absorption coefficient is converted to Dust Concentration distributed image.
A kind of mine Dust Concentration dynamic detection system based on ultrasound and Dust Concentration dynamic provided by the invention is supervised
Current single-shot list is received detection mode and is improved to circulation single-shot mostly receipts CT detection pattern, using ultrasonic velocity CT by survey method
With two kinds of image reflection Dust Concentration distributions of absorption coefficient CT, the accuracy of its detection is improved, by ultrasonic signal
Spectrum analysis obtains the signal peak of different frequency, can be with using selectional feature of the different-grain diameter coal dust to ultrasonic frequency
Detect the spatial distribution of different-grain diameter coal dust, obtain more accurately Dust Concentration distributed image, be the prior art it is very big into
Step.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mine Dust Concentration dynamic detection system in the present invention.
Specific embodiment
The present invention provides a kind of mine Dust Concentration dynamic detection systems based on ultrasound and Dust Concentration dynamic to supervise
Survey method, to make the purpose of the present invention, technical solution and effect clearer, clear and definite, below further specifically to the present invention
It is bright.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of mine Dust Concentration dynamic detection systems based on ultrasound comprising Dust Concentration inspection
Circular cylindrical cavity 10 is surveyed, as shown in Figure 1, which is made of inner ring 1 and outer ring 2, and 16
A ultrasonic sensor 3 is angularly fixed on the inner wall of inner ring, and each ultrasonic sensor 3 has transmitting ultrasonic wave simultaneously and connects
Receive the function of ultrasonic wave；Multiple mounting grooves 11 are evenly arranged on the outer wall of inner ring 1, the signal wire 12 of ultrasonic sensor 3 applies
In corresponding mounting groove 11, all signal wires 12 are commonly connected on the multi-pin connector 4 being fixed on outer ring 2, multi-pin connector 4
Be connected by shielded multiconductor cable 5 with a program-controlled multi-channel switch 6, program-controlled multi-channel switch 6 respectively with voltage pulse
Generator 7,8 connection of ultrasonic data acquisition device, voltage impulse generator 7 and 8 route of ultrasonic data acquisition device
Connection, ultrasonic data acquisition device 8 and 9 connection of data processing centre.
In another preferred embodiment of the present invention, above-mentioned ultrasonic data acquisition device 8 includes A/D collection plate 13, electricity
Lotus amplifier 14, the first I/O interface 15, the 2nd I/O interface 16 and the 3rd I/O interface 17, A/D collection plate 13 pass through the 3rd I/O
Interface 17 and 9 connection of data processing centre, charge amplifier 14 pass through the 2nd I/O interface 16 and 8 line of data processing centre
Road connection, charge amplifier 14 and 13 connection of A/D collection plate, charge amplifier 14 and program-controlled 6 route of multi-channel switch
Connection, voltage impulse generator 7 pass through first by synchronous circuit and 13 connection of A/D collection plate, voltage impulse generator 7
I/O interface 15 and 9 connection of data processing centre.And above-mentioned data processing centre 9 is that computer, industry calculating etc. are set
It is standby.
The present invention also provides a kind of Dust Concentration dynamic monitorings using the mine Dust Concentration dynamic detection system
Method comprising following steps:
Step 1, program-controlled multi-channel switch 6 control a ultrasonic sensor 3 and are in emission state, and control is super with this
Other seven ultrasonic sensors that 3 radiating surface normal of sonic sensor is received with transmitting to the angle of line less than 45 ° are in
Reception state；Each ultrasonic sensor 3 in 16 ultrasonic sensors 3 forms satisfaction after traversing an emission state
The detection pattern of CT image reconstruction；
Step 2, the high-voltage pulse signal that voltage impulse generator 7 generates are input to pair by program-controlled multi-channel switch 6
Ultrasonic sensor 3 is answered to generate ultrasonic wave analog signal, corresponding other seven of ultrasonic sensor 3 corresponding with this is in reception
The ultrasonic wave analog signal that the ultrasonic sensor of state receives is input to ultrasound data by program-controlled multi-channel switch 6
Acquisition device 8 forms digital signal after carrying out charge amplification, decaying, A/D conversion in ultrasonic data acquisition device 8, ultrasound
Wave data acquisition device 8, which goes out the digital data transmission to data processing centre 9, carries out data processing.
Further, above-mentioned steps two are specific further include:
Initial value threshold value and analysis time window section of the above-mentioned data processing centre 9 according to setting, automatic identification ultrasonic wave
First arrival time ti and peak-peak form Traveltime data file and amplitude data file, then obtain coal by CT image reconstruction algorithm
The VELOCITY DISTRIBUTION of coal dust and absorption coefficient distribution in 10 region of dust concentration detection cylinder shape cavity, finally according to Dust Concentration and super
The calibration result of acoustic speed and absorption coefficient is converted into obtaining Dust Concentration distributed image.
In order to which the present invention is further described, it is exemplified below more detailed embodiment and is illustrated.Setting, test chamber
Diameter according to actual needs can within the scope of 200-1000mm flexible design, if test chamber maximum detecting distance be 1m, ultrasound
Wave first-arrival traveltime is about 3ms；If sensor emission frequency is 500KHz, voltage pulse signal generator is set by cycle T=3.5ms
Meter fully meets the requirement to acquisition signal, is about 400ms in this way the time required to completion one-time detection, that is, realizes Dust Concentration
Dynamic detection realize again Dust Concentration spatial distribution detection.It is specific as follows:
Data processing centre 9 carries out hexadecimal sequential encoding (0#-F#) to 16 ultrasonic sensors 3, right respectively
The channel number of Ying Shiliu distance control multi-channel switch 6；
It is emission sensor that data processing centre 9 controls 0# ultrasonic sensor first, with program-controlled multi-channel switch 6
Voltage impulse generator 7 is connected in the channel 0#；Seven high-voltage pulse signals are generated by cycle T, it is defeated by program-controlled multi-channel switch 6
Enter to 0# ultrasonic sensor and generates seven ultrasonic signals, period T；Seven corresponding with 0# ultrasonic sensor are in
The ultrasonic sensor number of reception state is 5#-B# respectively；1st period is received by 5# sensor, and the 2nd period is passed by 6#
Sensor receives ... ..., and the 7th period is received by B# sensor；It receives rear data processing centre 9 and controls 1# ultrasonic wave again
Sensor is emission sensor, and the ultrasonic sensor sensor in reception state correspondingly is 6#-C#, with such
It pushes away, until causing F# sensor emission, corresponding 4#-A# is received, and completes primary complete data acquisition；
The ultrasonic wave analog signal that all ultrasonic sensors 3 receive is input to super by program-controlled multi-channel switch 6
Sonic data acquisition device 8 is converted into digital signal through charge amplification, decaying, A/D, is input to data processing centre 9 and is counted
According to processing；Initial value threshold value and analysis time window section of the data processing centre 9 according to setting, when automatic identification ultrasonic wave first arrival
Between ti and peak-peak, formed CT imaging format Traveltime data file and amplitude data file, call directly CT processing software
Real time imagery finally obtains the Dust Concentration distribution results inside Dust Concentration detection cylinder shape cavity 10, finally according to coal dust
The calibration result of concentration and ultrasonic velocity and absorption coefficient is converted into obtaining Dust Concentration distributed image.
Certainly, described above is only that presently preferred embodiments of the present invention is answered the present invention is not limited to enumerate above-described embodiment
When explanation, anyone skilled in the art is all equivalent substitutes for being made, bright under the introduction of this specification
Aobvious variant, all falls within the essential scope of this specification, ought to be by protection of the invention.
Claims (3)
1. a kind of Dust Concentration dynamic monitoring method using mine Dust Concentration dynamic detection system, the mine Dust Concentration
Dynamic detection system includes Dust Concentration detection cylinder shape cavity, and the Dust Concentration detection cylinder shape cavity is by inner ring and outer rings group
At 16 ultrasonic sensors are angularly fixed on the inner wall of inner ring, and each ultrasonic sensor has transmitting ultrasound simultaneously
Wave and the function of receiving ultrasonic wave；Multiple mounting grooves are evenly arranged on the outer wall of inner ring, the signal wire of ultrasonic sensor applies
In corresponding mounting groove, all signal wires are commonly connected to be fixed on the multi-pin connector on outer ring, and multi-pin connector passes through more
Core shielded cable is connected with a program-controlled multi-channel switch, program-controlled multi-channel switch respectively with voltage impulse generator, super
Sonic data acquisition device connection, voltage impulse generator and ultrasonic data acquisition device connection, ultrasonic wave number
According to acquisition device and data processing centre's connection；Itself the following steps are included:
A, program-controlled multi-channel switch controls a ultrasonic sensor and is in emission state, control and the ultrasonic sensor spoke
It penetrates other seven ultrasonic sensors of face normal and transmitting reception to the angle of line less than 45 ° and is in reception state；16
Each ultrasonic sensor in a ultrasonic sensor forms the inspection for meeting CT image reconstruction after traversing an emission state
Survey mode；
B, the high-voltage pulse signal that voltage impulse generator generates is input to corresponding ultrasonic wave by program-controlled multi-channel switch and passes
Sensor generates ultrasonic wave analog signal, corresponding other seven ultrasonic waves for being in reception state of corresponding with this ultrasonic sensor
The ultrasonic wave analog signal that sensor receives is input to ultrasonic data acquisition device by program-controlled multi-channel switch, super
Digital signal, ultrasonic data acquisition device are formed after carrying out charge amplification, decaying, A/D conversion in sonic data acquisition device
The digital data transmission is gone out to data processing centre and carries out data processing；Above-mentioned data processing centre is according to the initial value threshold of setting
Value and analysis time window section, automatic identification ultrasonic wave first arrival time tiAnd peak-peak, form Traveltime data file and width
Value Data file, then by CT image reconstruction algorithm obtain in Dust Concentration detection cylinder shape cavity area the VELOCITY DISTRIBUTION of coal dust and
Absorption coefficient distribution, is finally converted to Dust Concentration according to the calibration result of Dust Concentration and ultrasonic velocity and absorption coefficient
Distributed image.
2. Dust Concentration dynamic monitoring method according to claim 1, which is characterized in that above-mentioned ultrasonic data acquisition dress
It sets including A/D collection plate, charge amplifier, the first I/O interface, the 2nd I/O interface and the 3rd I/O interface, A/D collection plate passes through
3rd I/O interface and data processing centre's connection, charge amplifier pass through the 2nd I/O interface and data processing centre's route
Connection, charge amplifier and A/D collection plate connection, charge amplifier and program-controlled multi-channel switch connection, voltage
Impulse generator passes through the first I/O interface and data by synchronous circuit and A/D collection plate connection, voltage impulse generator
Processing center connection.
3. Dust Concentration dynamic monitoring method according to claim 1, which is characterized in that above-mentioned data processing centre is meter
Calculation machine.
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| CN201611093694.3A CN106855492B (en) | 2016-12-02 | 2016-12-02 | Mine Dust Concentration dynamic detection system and Dust Concentration dynamic monitoring method |
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| CN106855492B true CN106855492B (en) | 2019-06-21 |
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| US11327475B2 (en) | 2016-05-09 | 2022-05-10 | Strong Force Iot Portfolio 2016, Llc | Methods and systems for intelligent collection and analysis of vehicle data |
| US20180284758A1 (en) | 2016-05-09 | 2018-10-04 | StrongForce IoT Portfolio 2016, LLC | Methods and systems for industrial internet of things data collection for equipment analysis in an upstream oil and gas environment |
| US11774944B2 (en) | 2016-05-09 | 2023-10-03 | Strong Force Iot Portfolio 2016, Llc | Methods and systems for the industrial internet of things |
| US11237546B2 (en) | 2016-06-15 | 2022-02-01 | Strong Force loT Portfolio 2016, LLC | Method and system of modifying a data collection trajectory for vehicles |
| US10908602B2 (en) | 2017-08-02 | 2021-02-02 | Strong Force Iot Portfolio 2016, Llc | Systems and methods for network-sensitive data collection |
| CN109696386B (en) * | 2019-01-16 | 2021-02-05 | 徐州市质量技术监督综合检验检测中心 | Dynamic dust generation system for metering and calibrating raise dust monitor and working method |
| CN111912755B (en) * | 2020-08-07 | 2021-08-10 | 山东中煤工矿物资集团有限公司 | Mining dust concentration sensor, sensor system and method |
| CN113770143B (en) * | 2021-08-30 | 2022-07-12 | 蚌埠高华电子股份有限公司 | Device and method for cleaning grinding residues of liquid crystal glass substrate |
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| CN102507404A (en) * | 2011-11-28 | 2012-06-20 | 南京理工大学 | Online measurement system and measurement method of solid phase concentration of gas-solid two-phase flow |
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