CN114109470B - Accurate measurement system and method for air quantity of mine tunnel - Google Patents
Accurate measurement system and method for air quantity of mine tunnel Download PDFInfo
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- CN114109470B CN114109470B CN202111372727.9A CN202111372727A CN114109470B CN 114109470 B CN114109470 B CN 114109470B CN 202111372727 A CN202111372727 A CN 202111372727A CN 114109470 B CN114109470 B CN 114109470B
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- 238000004458 analytical method Methods 0.000 claims description 45
- 238000009434 installation Methods 0.000 claims description 24
- 238000000691 measurement method Methods 0.000 claims description 9
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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Abstract
The invention discloses a system and a method for accurately measuring the air quantity of a mine tunnel, comprising an air quantity measuring host and air quantity measuring probes, wherein the two air quantity measuring probes are arranged on two side wall surfaces of the tunnel in a right-facing way; the rotating device on the air quantity measuring probe rotates clockwise by a fixed angle each time, and the air measuring process is divided into a plurality of measuring periods; through laser sensor and ultrasonic sensor, can obtain two tunnel vertical section areas and a wind speed value at every measurement cycle, can calculate the average section area and the wind speed value in the wind measurement region when the wind measurement process is finished to obtain the amount of wind that passes through the wind measurement region in the wind measurement process. The invention overcomes the defect that the large-span correlation ultrasonic wind speed sensor is just right to be difficult to install when being used on site, considers factors such as irregularity of the tunnel section and tunnel deformation of the wind measuring area, and can accurately measure the wind quantity of the wind measuring area.
Description
Technical Field
The invention belongs to the technical field of mine tunnel air volume measurement, and particularly relates to a mine tunnel air volume accurate measurement system and method.
Background
In the operation process of the mine ventilation system, the air quantity is used as an important index for measuring the stability of the ventilation system, and needs to be accurately mastered by mine ventilation management staff. The mobile wiring method is the mine tunnel wind speed measuring method which is most widely applied on site, and has the defects of long measuring time and low efficiency, because the measuring result is often influenced by the technical operation level of measuring staff, and the measuring staff can also influence the flow field of the wind measuring area. Along with the continuous development of mine automation and informatization technologies, an automatic measuring method for measuring the tunnel air volume by using precise electronic equipment has become an important way for improving the mine ventilation quality and guaranteeing the green and safe production of mines.
At present, most mines are provided with wind speed sensors in a wind measuring area to obtain wind speed, and the tunnel air quantity is calculated according to the section area of the wind speed sensors. However, from the effect of field use, the accuracy of the air volume data obtained by the method is not as high as that of the traditional manual measurement method, and the manual measurement of the tunnel air speed is still an important content of mine ventilation work. The errors that occur with this measurement method are mainly responsible for two aspects: (1) The wind speed sensor measures the wind speed value of a certain point on the wind measuring section, and the measured value of the wind speed sensor always presents a continuously fluctuating state because the wind flow of the mine tunnel has the turbulence random pulsation characteristic, so that the average wind speed value of the wind measuring section cannot be given, and the installation position of the wind speed sensor has a larger influence on the measurement result. (2) Irregularities in the cross section of the mine tunnel cause some errors in the measurement of the cross section area. Therefore, the automatic measurement method of the mine tunnel air quantity still has a great room for improvement.
Disclosure of Invention
The invention aims to solve the technical problem of providing a system and a method for accurately measuring the air quantity of a mine tunnel aiming at the defects of the background technology. An air volume measuring probe combining an ultrasonic sensor and a laser ranging sensor is adopted, a wind measuring area is divided into two symmetrical half areas, a wind measuring process is divided into a plurality of measuring periods, the average wind speed of wind flowing through the wind measuring area in the wind measuring process and the average section of the wind measuring area can be obtained, and factors such as irregularity of the section of a tunnel in the wind measuring area, deformation of the tunnel and the like are taken into consideration, so that the accurate measurement of the air volume of a mine tunnel is realized.
The invention adopts the following technical scheme for solving the technical problems:
the accurate measuring system for the air quantity of the mine tunnel comprises an air quantity measuring host and a pair of air quantity measuring probes, wherein the air quantity measuring host and the air quantity measuring probes are connected through a transmission cable;
the air quantity measuring host comprises a laser measuring module, an ultrasonic measuring module and a control analysis module;
the air volume measuring probe comprises a shell, an ultrasonic sensor is arranged in the middle of the shell, and the ultrasonic sensor is connected with an ultrasonic measuring module; still include rotary device on the shell, rotary device upper and lower both ends all articulate and have the laser rangefinder sensor that can rotate in vertical plane, laser rangefinder sensor is connected with laser measurement module.
Furthermore, the control analysis module of the air volume measurement host is a singlechip.
Further, the air volume measuring probe comprises an air volume measuring probe I and an air volume measuring probe II, wherein the air volume measuring probe I and the air volume measuring probe II are respectively arranged on the roadway wall surfaces on two sides of the air measuring area and are opposite to each other; the ultrasonic sensor and the laser ranging sensor are both positioned in the same plane.
Further, the rotating device comprises a stepping motor, and the laser ranging sensor is driven to rotate by the stepping motor.
Further, the rotating means includes a central shaft, and the rotating means is rotatable about its central shaft in a horizontal direction.
The mine tunnel air volume accurate measurement method based on claim 1 comprises the following steps:
step 1, stably hanging an air quantity measuring host on the wall surface of a roadway at one side of a wind measuring area, and respectively installing an air quantity measuring probe I and an air quantity measuring probe II on the wall surfaces of the roadway at two sides of the wind measuring area; adjusting the installation positions and the installation angles of the first air volume measuring probe and the second air volume measuring probe, so that the two laser ranging sensors on the first air volume measuring probe are opposite to the two laser ranging sensors of the second air volume measuring probe; the laser measuring module stores the four distance data at the moment, which are recorded as D1, D2, D3 and D4, and transmits the D1, D2, D3 and D4 to the control analysis module;
step 2, the control analysis module judges whether the D1, the D2, the D3 and the D4 are equal, if so, the first air volume measuring probe and the second air volume measuring probe are judged to be just opposite to each other, and the "can start" is displayed on a display screen of the air volume measuring host; if the two air quantity measuring probes are not equal, continuously adjusting the installation positions and the installation angles of the first air quantity measuring probe and the second air quantity measuring probe until the display screen displays that the two air quantity measuring probes can start, and recording the installation angles theta of the first air quantity measuring probe and the second air quantity measuring probe at the moment;
step 3, inputting an installation angle theta, the rotation times N and the tunnel section shape of the wind measuring area on the wind measuring host computer, and starting to measure tunnel wind;
step 4, the control analysis module records the current measurement period n=1, and calculates the rotation angle of the rotating device in each measurement periodWind volume measuring probe one and wind volume measuringDistance d=d between probes two 1 ；
Step 5, the control analysis module sends a start instruction to the laser measurement module and the ultrasonic measurement module; the laser measuring module drives the laser ranging sensor to start rotating and scanning a vertical section, meanwhile, the ultrasonic measuring module drives the ultrasonic sensor of the first air volume measuring probe to transmit ultrasonic signals to the ultrasonic sensor of the second air volume measuring probe, and after the ultrasonic sensor of the second air volume measuring probe receives the ultrasonic signals, the ultrasonic sensor of the second air volume measuring probe is driven to transmit ultrasonic signals to the ultrasonic sensor of the first air volume measuring probe, and the ultrasonic sensor of the first air volume measuring probe is waited to receive the ultrasonic signals;
step 6, the laser measuring module calculates the vertical section area E according to the distance data fed back by the laser ranging sensor and the section shape of the roadway input in the wind measuring host machine 1 And E' 1 And E is combined with 1 And E' 1 Transmitting the data to a control analysis module; the ultrasonic measuring module calculates a time interval T from the ultrasonic sensor of the first air volume measuring probe to the ultrasonic sensor of the second air volume measuring probe according to the feedback signal of the ultrasonic sensor of the first air volume measuring probe 1 And a time interval T 'from the transmission of the ultrasonic signal from the ultrasonic sensor of the air volume measuring probe II to the reception of the ultrasonic sensor of the air volume measuring probe I' 1 And T is taken 1 And T' 1 Transmitting the data to a control analysis module;
and 7, processing and storing data transmitted by the laser measurement module and the ultrasonic measurement module by the control analysis module, wherein the control analysis module comprises the following specific steps of: calculating the section area of the roadwayCalculate wind speed->
Step 8, the control analysis module records that the measuring period 1 is ended, and the n+1th measuring period is entered;
step 9, controlling the analysis module to control the stepping motor to drive the rotating device to rotate clockwise by an alpha degree, and at the moment, rotating the vertical section where the laser ranging sensor is positioned clockwise by the alpha degree;
step 10, repeating the operations from step 5 to step 9 until the measurement process of the measurement period n=n+1 is finished, and obtaining the tunnel cross-section area S 1 、S 2 、 …… S N+1 And wind speed V 1 、V 1 、 …… V N+1 ；
Step 11, the control analysis module processes the data obtained in the n+1 measurement periods, specifically: calculating the average section area of the tunnel in the anemometry areaCalculate average wind speed +.>Calculate the wind +.>
And step 12, the control analysis module sends the average section S, the average wind speed V and the wind quantity Q of the tunnel in the wind measuring area to the display screen, and controls the stepping motor to drive the rotating device to rotate to the initial position, and the measuring process is finished.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
according to the invention, the wind measuring area is expanded from a tunnel section to a tunnel area, the wind measuring area is divided into two half areas by arranging the wind measuring probes on the tunnel wall surfaces at two sides of the wind measuring area, and the wind measuring process is divided into a plurality of measuring periods. And the line wind speed of the wind measuring area is measured by adopting an ultrasonic time difference method in each measuring period, the probe installation condition is corrected by a laser ranging sensor on the air volume measuring probe, the opposite transmitting and receiving of the ultrasonic sensor are realized, and the defect that the opposite installation of a common large-span ultrasonic time difference method opposite-emitting wind speed sensor is difficult when the common large-span ultrasonic time difference method opposite-emitting wind speed sensor is used on site is overcome. The laser ranging sensor rotationally scans the vertical section, and the area of the two vertical sections can be obtained in each measuring period. By utilizing the rotating device in the air volume measuring probe, the laser ranging sensor can be adjusted to the next group of vertical tangential planes, so that the whole air measuring area can be scanned, and the factors such as the irregularity of the tunnel section of the air measuring area and the deformation of the tunnel are taken into consideration. When the whole measuring process is finished, the average wind speed of the wind measuring area in the wind measuring process is represented by the average value of a plurality of wind speed values, the average cross-sectional area of the wind measuring area is represented by the average value of the cross-sectional areas of a plurality of roadways, and finally the wind quantity of the wind flow passing through the wind measuring area in the wind measuring process is calculated.
Drawings
FIG. 1 is a top view of an air volume accurate measurement system of the present invention installed in a mine tunnel;
FIG. 2 is a schematic diagram of a stroke volume measuring host according to the present invention;
FIG. 3 is a front view of a stroke volume measurement probe of the present invention;
FIG. 4 is a top view of a stroke volume measurement probe of the present invention;
FIG. 5 is a left side view of the stroke volume measuring probe of the present invention;
fig. 6 is a schematic diagram of parameters related to the accurate measuring method of the air quantity of the present invention.
1. An air quantity measuring host; 11. a control analysis module; 12. a laser measurement module; 13. an ultrasonic measurement module; 14. a display screen; 2. an air quantity measuring probe I; 21. an ultrasonic sensor; 22. a laser ranging sensor; 23. a rotating device; 24. a housing; 3. an air quantity measuring probe II; 4. facing the direction; 5. the axial direction of the roadway; 6. a rotation angle range; 7. and (5) vertical cutting.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings:
in the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present invention. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.
The accurate measuring system for the air quantity of the mine tunnel comprises an air quantity measuring host machine 1 and a pair of air quantity measuring probes, as shown in fig. 1-6, wherein the air quantity measuring host machine 1 and the air quantity measuring probes are connected through transmission cables.
The air volume measuring host 1 comprises a laser measuring module 12, an ultrasonic measuring module 13 and a control analysis module 11; the control analysis module 11 of the air volume measurement host 1 is a singlechip.
The air volume measuring probe comprises a shell 2, an ultrasonic sensor 21 is arranged in the middle of the shell 2, and the ultrasonic sensor 21 is connected with an ultrasonic measuring module 13; the housing 2 further comprises a rotating device 23, the rotating device 23 comprises a stepping motor, and the laser ranging sensor 22 is driven to rotate by the stepping motor. The upper end and the lower end of the rotating device 23 are hinged with laser ranging sensors 22 capable of rotating in a vertical plane, and the laser ranging sensors 22 are connected with the laser measuring module 12. The rotation means 23 comprise a central axis, said rotation means 23 being rotatable in a horizontal direction about its central axis.
The air volume measuring probe comprises an air volume measuring probe I2 and an air volume measuring probe II 3, wherein the air volume measuring probe I2 and the air volume measuring probe II 3 are respectively arranged on the wall surfaces of the roadway at two sides of the air measuring area and are opposite to each other; the ultrasonic sensor 21 and the laser ranging sensor 22 are all positioned in the same plane. The installation angle theta of the air volume measuring probe is the included angle between the opposite direction 4 of the probe and the axial direction 5 of the roadway. The first air volume measuring probe 2 and the second air volume measuring probe 21 are integrated with the ultrasonic sensor.
The laser ranging sensor 22 of the first air volume measuring probe 2 and the second air volume measuring probe can rotate around the installation position of the first air volume measuring probe and the second air volume measuring probe in the vertical direction, the rotation angle range 6 of the laser ranging sensor 22 is 180 degrees, the rotating device 23 can rotate around the center of the rotating device in the horizontal direction, and the rotation angle range 66 is 90 degrees to theta.
The ultrasonic sensor 21 is used for transmitting and receiving ultrasonic signals, the laser ranging sensor 22 is used for transmitting and receiving laser signals, the rotating device 23 is used for adjusting the vertical tangent plane 7 where the current laser ranging sensor 22 is located to the next vertical tangent plane 7, and the vertical tangent plane 7 represents the plane where the signal transmitting line of the laser ranging sensor 22 is located.
The laser measuring module 12 is used for measuring the distance D between two air volume measuring probes and calculating the area E of the vertical section 7 in different measuring periods n And E' n E is calculated based on the distance data fed back by the laser ranging sensor 22 and the shape of the section of the tunnel inputted by the setting button n 、E' n And D, and E n 、E' n And D, transmitting the data to a control analysis module; the ultrasonic measuring module 13 is used for measuring the time difference T of ultrasonic wave propagation under downwind and upwind conditions n And T' n And T is taken n And T' n To the control analysis module 11; the control analysis module 11 is used for checking whether the two air volume measuring probes are right opposite to be installed before the measurement period starts, controlling the rotating device 23 to rotate clockwise by alpha degrees in each measurement period according to the installation angle theta and the rotation times N input by the setting button, and finally processing feedback data of the laser measurement module 12 and the ultrasonic measurement module 13 into air volume Q, average section S of the air measurement area and average air speed V to be sent to the display screen.
The working method of the mine tunnel air quantity accurate measurement system comprises the following specific steps:
step 1, stably hanging an air volume measurement host 1 on a roadway wall surface at one side of an air measurement area by an air measurement personnel, and respectively installing an air volume measurement probe I2 and an air volume measurement probe II 3 on roadway wall surfaces at two sides of the air measurement area; adjusting the installation position and the installation angle of the first air volume measuring probe 2 and the second air volume measuring probe 3, so that infrared light emitted by the laser ranging sensor of the first air volume measuring probe 2 can be just beaten on the laser ranging sensor of the second air volume measuring probe 3; the laser measurement module 12 stores the four distance data at this time, denoted as D 1 、D 2 、D 3 、D 4 And D is combined with 1 、D 2 、D 3 、D 4 To the control analysis module 11;
step 2, the control analysis module 11 determines D 1 、D 2 、D 3 、D 4 If the air quantity measuring probes are equal, displaying 'can start' on a display screen 14 of the air quantity measuring host, and considering that the first air quantity measuring probe 2 and the second air quantity measuring probe 3 are just opposite to each other; otherwise, the wind measuring staff continuously adjusts the installation position and the installation angle of the first wind measuring probe 2 and the second wind measuring probe 3 until the display screen 14 displays 'can start', and records the installation angle theta of the first wind measuring probe 2 and the second wind measuring probe 3 at the moment;
step 3, the wind measuring personnel inputs the installation angle theta, the rotation times N and the tunnel section shape of the wind measuring area on the wind measuring host 1, and begins to measure the tunnel wind;
step 4, the control analysis module 11 records the current measurement period n=1, and calculates the rotation angle of the rotation device in each measurement periodDistance d=d between air volume measurement probe one 2 and air volume measurement probe two 3 1 ；
Step 5, the control analysis module 11 sends a start instruction to the laser measurement module 12 and the ultrasonic measurement module 13; the laser measurement module 12 drives the laser ranging sensor 22 to start rotating and scanning the vertical section, meanwhile, the ultrasonic measurement module 13 drives the ultrasonic sensor of the first air volume measurement probe 2 to transmit ultrasonic signals to the ultrasonic sensor of the second air volume measurement probe 3, and after the ultrasonic sensor of the second air volume measurement probe 3 receives the ultrasonic signals, the ultrasonic sensor of the second air volume measurement probe 3 is driven to transmit ultrasonic signals to the ultrasonic sensor of the first air volume measurement probe 2, and the ultrasonic sensor of the first air volume measurement probe 2 is waited for receiving the ultrasonic signals;
step 6, the laser measuring module 12 calculates the vertical section area E according to the distance data fed back by the laser ranging sensor 22 and the tunnel section shape input in the air volume measuring host machine 1 And E' 1 And E is combined with 1 And E' 1 Transmitting the data to a control analysis module; the ultrasonic measuring module 13 calculates a time interval T from the ultrasonic sensor of the first air volume measuring probe 2 to the ultrasonic sensor of the second air volume measuring probe 3 according to the feedback signal of the ultrasonic sensor of the first air volume measuring probe 2 1 And a time interval T 'from the transmission of the ultrasonic signal from the ultrasonic sensor of the air volume measuring probe II 3 to the reception of the ultrasonic sensor of the air volume measuring probe I2' 1 And T is taken 1 And T' 1 Transmitting the data to a control analysis module;
step 7, the control analysis module 11 processes and stores the data transmitted by the laser measurement module 12 and the ultrasonic measurement module 13, specifically: calculating the section area of the roadwayCalculating wind speed
Step 8, the control analysis module 11 records the end of the measurement period 1 and enters the (n+1) th measurement period;
step 9, the control analysis module 11 controls the stepping motor to drive the rotating device to rotate clockwise by an angle of alpha, and at the moment, the vertical section where the laser ranging sensor is positioned also rotates clockwise by the angle of alpha;
step 10, repeating the operations from step 5 to step 9 until the measurement process of the measurement period n=n+1 is finished, and obtaining the tunnel cross-section area S 1 、S 2 、 …… S N+1 And wind speed V 1 、V 1 、 …… V N+1 ；
Step 11, the control analysis module 11 processes the data obtained in n+1 measurement periods, specifically: calculating the average section area of the tunnel in the anemometry areaCalculate average wind speed +.>Calculate the wind +.>
And step 12, the control analysis module 11 sends the average section S, the average wind speed V and the wind quantity Q of the tunnel in the wind measuring area to the display screen 14, and controls the stepping motor to drive the rotating device 23 to rotate to the initial position, and the measuring process is finished.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the present invention. The embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. The accurate measurement method of the air quantity of the mine tunnel is based on an accurate measurement system of the air quantity of the mine tunnel, the system comprises an air quantity measurement host and a pair of air quantity measurement probes, and the air quantity measurement host and the air quantity measurement probes are connected through transmission cables;
the air quantity measuring host comprises a laser measuring module, an ultrasonic measuring module and a control analysis module;
the air volume measuring probe comprises a shell, an ultrasonic sensor is arranged in the middle of the shell, and the ultrasonic sensor is connected with an ultrasonic measuring module; the shell also comprises a rotating device, wherein the upper end and the lower end of the rotating device are hinged with laser ranging sensors capable of rotating in a vertical plane, and the laser ranging sensors are connected with a laser measuring module;
the method is characterized in that: the method comprises the following steps:
step 1, stably hanging an air quantity measuring host on the wall surface of a roadway at one side of a wind measuring area, and respectively installing an air quantity measuring probe I and an air quantity measuring probe II on the wall surfaces of the roadway at two sides of the wind measuring area; adjusting the installation positions and the installation angles of the first air volume measuring probe and the second air volume measuring probe, so that the two laser ranging sensors on the first air volume measuring probe are opposite to the two laser ranging sensors of the second air volume measuring probe; the laser measuring module stores the four distance data at the moment, which are recorded as D1, D2, D3 and D4, and transmits the D1, D2, D3 and D4 to the control analysis module;
step 2, the control analysis module judges whether the D1, the D2, the D3 and the D4 are equal, if so, the first air volume measuring probe and the second air volume measuring probe are judged to be just opposite to each other, and the "can start" is displayed on a display screen of the air volume measuring host; if the two air quantity measuring probes are not equal, continuously adjusting the installation positions and the installation angles of the first air quantity measuring probe and the second air quantity measuring probe until the display screen displays that the two air quantity measuring probes can start, and recording the installation angles theta of the first air quantity measuring probe and the second air quantity measuring probe at the moment;
step 3, inputting an installation angle theta, the rotation times N and the tunnel section shape of the wind measuring area on the wind measuring host computer, and starting to measure tunnel wind;
step 4, the control analysis module records the current measurement period n=1, and calculates the rotation angle of the rotating device in each measurement periodDistance d=d between the wind volume measuring probe one and the wind volume measuring probe two 1 ；
Step 5, the control analysis module sends a start instruction to the laser measurement module and the ultrasonic measurement module; the laser measuring module drives the laser ranging sensor to start rotating and scanning a vertical section, meanwhile, the ultrasonic measuring module drives the ultrasonic sensor of the first air volume measuring probe to transmit ultrasonic signals to the ultrasonic sensor of the second air volume measuring probe, and after the ultrasonic sensor of the second air volume measuring probe receives the ultrasonic signals, the ultrasonic sensor of the second air volume measuring probe is driven to transmit ultrasonic signals to the ultrasonic sensor of the first air volume measuring probe, and the ultrasonic sensor of the first air volume measuring probe is waited to receive the ultrasonic signals;
step 6, the laser measuring module calculates the vertical section area E according to the distance data fed back by the laser ranging sensor and the section shape of the roadway input in the wind measuring host machine 1 And E' 1 And E is combined with 1 And E' 1 Transmitting the data to a control analysis module; the ultrasonic measuring module calculates a time interval T from the ultrasonic sensor of the first air volume measuring probe to the ultrasonic sensor of the second air volume measuring probe according to the feedback signal of the ultrasonic sensor of the first air volume measuring probe 1 And a time interval T 'from the transmission of the ultrasonic signal from the ultrasonic sensor of the air volume measuring probe II to the reception of the ultrasonic sensor of the air volume measuring probe I' 1 And T is taken 1 And T' 1 Transmitting the data to a control analysis module;
and 7, processing and storing data transmitted by the laser measurement module and the ultrasonic measurement module by the control analysis module, wherein the control analysis module comprises the following specific steps of: calculating the section area of the roadwayCalculate wind speed->
Step 8, the control analysis module records that the measuring period 1 is ended, and the n+1th measuring period is entered;
step 9, controlling the analysis module to control the stepping motor to drive the rotating device to rotate clockwise by an alpha degree, and at the moment, rotating the vertical section where the laser ranging sensor is positioned clockwise by the alpha degree;
step 10, repeating the operations of step 5-step 9 until the measurement period n=n+1, and obtaining the tunnel cross-section area S 1 、S 2 、 …… S N+1 And wind speed V 1 、V 1 、 …… V N+1 ；
Step 11, the control analysis module processes the data obtained in the n+1 measurement periods, specifically: calculating the average section area of the tunnel in the anemometry areaCalculate average wind speed +.>Calculate the wind +.>
And step 12, the control analysis module sends the average section S, the average wind speed V and the wind quantity Q of the tunnel in the wind measuring area to the display screen, and controls the stepping motor to drive the rotating device to rotate to the initial position, and the measuring process is finished.
2. The accurate measurement method of the air quantity of the mine tunnel according to claim 1, which is characterized in that: the control analysis module of the air volume measurement host is a singlechip.
3. The accurate measurement method of the air quantity of the mine tunnel according to claim 1, which is characterized in that: the air quantity measuring probe comprises an air quantity measuring probe I and an air quantity measuring probe II, wherein the air quantity measuring probe I and the air quantity measuring probe II are respectively arranged on the wall surfaces of the roadway at two sides of the air measuring area and are opposite to each other; the ultrasonic sensor and the laser ranging sensor are both positioned in the same plane.
4. The accurate measurement method of the air quantity of the mine tunnel according to claim 1, which is characterized in that: the rotating device comprises a stepping motor, and the laser ranging sensor is driven by the stepping motor to rotate.
5. The accurate measurement method of the air quantity of the mine tunnel according to claim 1, which is characterized in that: the rotation device comprises a central shaft, and the rotation device can rotate around the central shaft in the horizontal direction.
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