CN116557032A - Mine roadway section wind speed monitoring device and section wind speed monitoring method - Google Patents
Mine roadway section wind speed monitoring device and section wind speed monitoring method Download PDFInfo
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- CN116557032A CN116557032A CN202310594375.4A CN202310594375A CN116557032A CN 116557032 A CN116557032 A CN 116557032A CN 202310594375 A CN202310594375 A CN 202310594375A CN 116557032 A CN116557032 A CN 116557032A
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- 238000004891 communication Methods 0.000 claims abstract description 39
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F1/02—Test models
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention provides a mine roadway section wind speed monitoring device and a section wind speed monitoring method, which relate to the technical field of underground mine one-ventilation three-prevention, and comprise the following steps: sensor, AD/DA, signal processing, data communication, power supply unit. When the intelligent wind speed and wind speed control system works, one path of sensor and AD/DA receiving signal processing unit digital-analog information are sent at a specific frequency, the other path of sensor and AD/DA sampling analog signals are converted into digital signals, the signal processing unit is combined with the section calculation of a roadway of an installation place to output three data of wind speed, wind direction and wind quantity, and the data communication unit is communicated with the data processing unit and also receives network data of an upper computer or mobile equipment to carry out setting and remote control. Therefore, on-line high-precision monitoring of the full-section three-dimensional average wind speed of the roadway is realized, the accuracy of wind speed, wind direction and wind quantity data is improved, and basic data support is provided for real-time ventilation network calculation.
Description
Technical Field
The invention relates to the technical field of underground mine one-pass three-prevention, in particular to a mine tunnel section wind speed monitoring device and a method for realizing section wind speed monitoring by using the mine tunnel section wind speed monitoring device.
Background
Mine ventilation safety is a basis for guaranteeing normal underground production, and monitoring of wind speed, wind direction and air quantity and adjusting of the air quantity are a frequent key work in underground ventilation technology management and are extremely important for guaranteeing safety of underground personnel. The current fixed wind measuring station or temporary wind measuring point of the underground roadway such as a mining face is mainly finished by manual work, real-time monitoring cannot be carried out, and errors exist; while the wind speed sensor in the safety monitoring system realizes on-line monitoring, only spot wind speed monitoring can be carried out, and on-line monitoring of the wind speed, wind direction and wind quantity of a section cannot be realized.
Therefore, the existing manual wind speed measurement method and the existing safety monitoring point wind speed monitoring method cannot meet the industrial requirements of roadway ventilation, and it is difficult to realize online high-precision monitoring of wind speed, wind direction and wind quantity of a roadway section and provide reliable basic data for real-time ventilation network calculation.
Disclosure of Invention
In view of the problems, the invention provides a mine tunnel section wind speed monitoring device and a method for realizing section wind speed monitoring by using the mine tunnel section wind speed monitoring device.
The embodiment of the invention provides a mine tunnel section wind speed monitoring device, which comprises: the system comprises a first sensor, a first AD/DA unit, a second sensor, a second AD/DA unit, a signal processing unit, a data communication unit and a power supply unit;
the first sensor is connected with the first AD/DA unit through two lines, and the two lines work asynchronously;
the second sensor is connected with the second AD/DA unit through two lines, and the two lines work asynchronously; the first sensor and the second sensor are used for receiving or transmitting analog signals, and the first AD/DA unit and the second AD/DA unit are used for carrying out analog-to-digital conversion and digital-to-analog conversion on the analog signals;
the signal processing unit is respectively connected with the first AD/DA unit, the second AD/DA unit, the data communication unit and the power supply unit, and is used for receiving digital signals sent by the first AD/DA unit and the second AD/DA unit, analyzing and calculating the digital signals and outputting calculation results;
the data communication unit is respectively connected with the first AD/DA unit, the second AD/DA unit, the signal processing unit and the power supply unit, and is used for data conversion among different protocols and communication with external equipment;
the power supply unit is respectively connected with the first AD/DA unit, the second AD/DA unit, the signal processing unit and the data communication unit, and is used for providing working voltage and current.
Optionally, two lines between the first sensor and the first AD/DA unit, where one line is used for the first sensor to send the analog signal to the first AD/DA unit, and the first AD/DA unit receives the analog signal and performs filtering and analog-to-digital conversion, and the other line is used for the first AD/DA unit to convert the digital signal from the signal processing unit into an analog signal and then send the analog signal to the first sensor;
and two circuits between the second sensor and the second AD/DA unit, wherein one circuit is used for the second sensor to send the analog signal to the second AD/DA unit, the second AD/DA unit receives the analog signal and then performs filtering and analog-to-digital conversion, and the other circuit is used for the second AD/DA unit to convert the digital signal from the signal processing unit into an analog signal and then send the analog signal to the second sensor.
Optionally, the working combination between the first sensor and the first AD/DA unit, and between the second sensor and the second AD/DA unit comprises:
the first sensor converts the analog signal of the specific frequency f obtained by digital-to-analog conversion of the first AD/DA unit into a corresponding sound to be sent out, or converts the received sound of the specific frequency f into a corresponding analog signal to be transmitted to the first AD/DA unit;
the second sensor converts the received sound with the specific frequency f into a corresponding analog signal and transmits the corresponding analog signal to the second AD/DA unit, or converts the analog signal with the specific frequency f obtained by digital-to-analog conversion of the second AD/DA unit into the corresponding sound and transmits the corresponding sound.
Optionally, the signal processing unit is specifically configured to:
sampling digital signals of the first AD/DA unit and the second AD/DA unit;
transmitting analog signals of the specific frequency f to the first sensor and the second sensor through the first AD/DA unit and the second AD/DA unit, respectively;
receiving transmission data from the data communication unit or transmitting data to the data communication unit;
and analyzing and calculating the digital signals to obtain the wind speed, wind direction and wind quantity of the section of the mine roadway, and outputting the wind speed, wind direction and wind quantity to the data communication unit.
Optionally, the data communication unit converts the different protocol data into a wired signal or a wireless signal, so as to communicate with the external device.
Optionally, the first sensor and the second sensor are respectively arranged at the front and the rear of the left and the right sides of the mine roadway and are spaced by a preset distance;
after the first sensor and the second sensor are fixed, the first sensor and the second sensor are paired in a visual way.
The embodiment of the invention provides a method for monitoring the section wind speed of a mine tunnel by using the section wind speed monitoring device of the mine tunnel, which comprises the following steps:
selecting and fixing the mounting positions of the first sensor and the second sensor;
acquiring the distance, the height difference and the roadway width between the first sensor and the second sensor, and further determining the area of the section of the mine roadway, wherein the section is the section where the positions of the first sensor and the second sensor are located after the first sensor and the second sensor are installed;
transmitting a primary signal to the first sensor through the first AD/DA unit by the signal processing unit, receiving the primary signal by the second sensor, feeding back the primary signal to the signal processing unit through the second AD/DA unit, and processing the primary signal by the signal processing unit to obtain a first frequency;
transmitting a primary signal to the second sensor through the second AD/DA unit by the signal processing unit, feeding back the primary signal to the signal processing unit through the first AD/DA unit after the primary signal is received by the first sensor, and obtaining a second frequency after the primary signal is processed by the signal processing unit;
and processing the first frequency and the second frequency by using the signal processing unit to obtain the wind speed, the wind direction and the wind quantity of the section of the mine roadway.
Optionally, the signal processing unit sends a signal to the first sensor through the first AD/DA unit, and the signal is fed back to the signal processing unit through the second AD/DA unit after being received by the second sensor, and the signal processing unit processes the signal to obtain a first frequency, where the signal processing unit includes:
generating a first digital signal by the signal processing unit and transmitting the first digital signal to a first AD/DA unit;
the first AD/DA unit converts the first digital signal into a corresponding first analog signal and transmits the corresponding first analog signal to the first sensor;
the first sensor converts the first analog signal into corresponding first sound and sends the first sound to the second sensor;
the second sensor converts the first sound into a corresponding second analog signal and transmits the second analog signal to the second AD/DA unit;
the second AD/DA unit converts the second analog signal into a corresponding second digital signal and transmits the second digital signal to the signal processing unit;
and the signal processing unit processes the second digital signal to obtain the first frequency.
Optionally, the signal processing unit sends a signal to the second sensor through the second AD/DA unit, and after the signal is received by the first sensor, the signal is fed back to the signal processing unit through the first AD/DA unit, and after being processed by the signal processing unit, a second frequency is obtained, where the signal processing unit includes:
generating a third digital signal by the signal processing unit and transmitting the third digital signal to the second AD/DA unit;
the second AD/DA unit converts the third digital signal into a corresponding third analog signal and transmits the corresponding third analog signal to the second sensor;
the second sensor converts the third analog signal into a corresponding second sound and sends the second sound to the first sensor;
the first sensor converts the second sound into a corresponding fourth analog signal and transmits the fourth analog signal to the first AD/DA unit;
the first AD/DA unit converts the fourth analog signal into a corresponding fourth digital signal and transmits the fourth digital signal to the signal processing unit;
and the signal processing unit processes the fourth digital signal to obtain the second frequency.
Optionally, the processing the first frequency and the second frequency by using the signal processing unit to obtain a wind speed, a wind direction and a wind quantity of the mine tunnel section, including:
the average wind speed formula of the mine tunnel section is as follows:
V＝K*(f1-f2)
in the above formula, V represents the average wind speed, f1 represents the first frequency, f2 represents the second frequency, and K represents a wind speed constant. The magnitude of V is proportional to the frequency difference between the first frequency and the second frequency;
when the first frequency f1 is larger than the second frequency f2, the wind direction of the section of the mine roadway is positive wind, and when the first frequency f1 is smaller than the second frequency f2, the wind direction of the section of the mine roadway is negative wind;
the calculation formula of the wind speed constant K is as follows:
K＝c2/(2*√(c2-a2-b2))
in the above formula, c represents the distance between the first sensor and the second sensor, b represents the height difference between the first sensor and the second sensor, and a represents the width of the mine roadway;
the calculation formula of the air quantity per minute is as follows:
Q＝60*s*v
in the above formula, s represents the area of the section of the mine roadway.
The invention provides a mine roadway section wind speed monitoring device, which comprises: the sensor comprises a first sensor, a first AD/DA unit, a second sensor, a second AD/DA unit, a signal processing unit, a data communication unit and a power supply unit.
The first sensor is connected with the first AD/DA unit through two lines, and the two lines work asynchronously; the second sensor is connected with the second AD/DA unit through two lines, and the two lines work asynchronously; the first sensor and the second sensor are used for receiving or transmitting analog signals, and the first AD/DA unit and the second AD/DA unit are used for performing analog-to-digital conversion and digital-to-analog conversion on the analog signals.
The signal processing unit is respectively connected with the first AD/DA unit, the second AD/DA unit, the data communication unit and the power supply unit, and is used for receiving the digital signals sent by the first AD/DA unit and the second AD/DA unit, analyzing and calculating the digital signals and outputting calculation results.
The data communication unit is respectively connected with the first AD/DA unit, the second AD/DA unit, the signal processing unit and the power supply unit, and is used for data conversion among different protocols and communication with external equipment.
The power supply unit is respectively connected with the first AD/DA unit, the second AD/DA unit, the signal processing unit and the data communication unit, and is used for providing working voltage and current.
The invention realizes on-line high-precision monitoring of the full-section three-dimensional average wind speed of the roadway by using the mine roadway section wind speed monitoring device, greatly improves the accuracy of wind speed, wind direction and wind quantity data, and provides reliable basic data support for real-time ventilation network calculation.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a block diagram of a mine tunnel section wind speed monitoring device according to an embodiment of the invention;
FIG. 2 is a schematic diagram of an installation position of the first sensor 1 and the second sensor 3 and a principle of monitoring a tunnel section wind speed in the embodiment of the invention;
FIG. 3 is a flow chart of a method for monitoring the section wind speed of a mine tunnel by using the section wind speed monitoring device of the mine tunnel in the embodiment of the invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, there is shown a block diagram of a mine tunnel section wind speed monitoring device according to an embodiment of the present invention, the mine tunnel section wind speed monitoring device includes: a first sensor 1, a first AD/DA unit 2, a second sensor 3, a second AD/DA unit 4, a signal processing unit 5, a data communication unit 6, and a power supply unit 7.
The first sensor 1 is connected with the first AD/DA unit 2 through two lines, and the two lines work asynchronously; the second sensor 3 is likewise connected to the second AD/DA unit 4 via two lines, which also operate asynchronously.
The first sensor 1 and the second sensor 3 are both used for receiving or transmitting analog signals, and the first AD/DA unit 2 and the second AD/DA unit 4 are both used for performing analog-to-digital conversion and digital-to-analog conversion on the analog signals.
The signal processing unit 5 is connected to the first AD/DA unit 2, the second AD/DA unit 4, the data communication unit 6, and the power supply unit 7, and the signal processing unit 5 is configured to receive the digital signals sent by the first AD/DA unit 2 and the second AD/DA unit 4, analyze and calculate the digital signals, and output a calculation result.
The data communication unit 6 is connected to the first AD/DA unit 2, the second AD/DA unit 4, the signal processing unit 5, and the power supply unit 7, respectively, and the data communication unit 6 is used for data conversion between different protocols and communication with external devices. External devices include, but are not limited to: mobile handsets, computers, servers, etc.
The power supply unit 7 is respectively connected with the first AD/DA unit 2, the second AD/DA unit 4, the signal processing unit 5 and the data communication unit 6, and the power supply unit 7 is used for providing voltage and current required by the operation of the whole mine roadway section wind speed monitoring device.
In a specific workflow, two lines between the first sensor 1 and the first AD/DA unit 2, wherein one line is used for the first sensor 1 to send an analog signal to the first AD/DA unit 2, and the first AD/DA unit 2 receives the analog signal and then performs filtering and analog-to-digital conversion; and the other line is used for the first AD/DA unit 2 to convert the digital signal from the signal processing unit 5 into an analog signal and then to transmit the analog signal to the first sensor 1. Asynchronous operation is achieved by such a design.
Similarly, two lines between the second sensor 3 and the second AD/DA unit 4, wherein one line is used for the second sensor 3 to send an analog signal to the second AD/DA unit 4, and the second AD/DA unit 4 receives the analog signal and then performs filtering and analog-to-digital conversion; and the other line is used for the second AD/DA unit 4 to transmit an analog signal to the second sensor 3 after converting the digital signal from the signal processing unit 5 into an analog signal.
The working combination modes between the first sensor 1 and the first AD/DA unit 2 and between the second sensor 3 and the second AD/DA unit 4 may be various, and a preferred working combination mode includes:
the first sensor 1 converts the analog signal of the specific frequency f obtained by digital-to-analog conversion of the first AD/DA unit 2 into a corresponding sound to be transmitted, or the first sensor 1 converts the received sound of the specific frequency f (transmitted by the second sensor 3) into a corresponding analog signal to be transmitted to the first AD/DA unit 2.
The second sensor 3 converts the received sound with the specific frequency f into a corresponding analog signal and transmits the corresponding analog signal to the second AD/DA unit 4, or the second sensor 3 converts the analog signal with the specific frequency f obtained by digital-to-analog conversion of the second AD/DA unit 4 into a corresponding sound and transmits the corresponding sound.
In an actual workflow, the signal processing unit 5 is specifically configured to:
1) Sampling the digital signals of the first AD/DA unit 2 and the second AD/DA unit 4;
2) Transmitting analog signals of a specific frequency f to the first sensor 1 and the second sensor 3 through the first AD/DA unit 2 and the second AD/DA unit 4, respectively;
3) Receiving transmission data from the data communication unit 6, or transmitting data to the data communication unit 6;
4) The digital signals (from the first AD/DA unit 2 and the second AD/DA unit 4) are analyzed, calculated to obtain the wind speed, wind direction and wind quantity of the mine tunnel section, and output to the data communication unit 6.
The data communication unit 6 may convert different protocol data into a wired signal or a wireless signal, so as to implement communication with an external device.
In addition, at the installation positions of the first sensor 1 and the second sensor 3, the first sensor 1 and the second sensor 3 can be respectively arranged at the front and the rear of the left side wall and the right side wall of the mine roadway and are spaced at preset distances; after both the first sensor 1 and the second sensor 3 are fixed, both can be visually paired.
Referring to fig. 2, an installation position of the first sensor 1 and the second sensor 3 is exemplarily shown, and the principle of monitoring the section wind speed of the roadway can be better understood by combining the flow chart of the method for monitoring the section wind speed of the roadway of the mine with the mine section wind speed monitoring device shown in fig. 3. The method for monitoring the section wind speed of the mine tunnel by using the section wind speed monitoring device of the mine tunnel comprises the following steps:
step 101: the mounting positions of the first sensor 1 and the second sensor 3 are selected and fixed.
As described above, it is first necessary to select and fix the mounting positions of the first sensor 1 and the second sensor 3, respectively. For example: the first sensor 1 and the second sensor 3 are respectively arranged at the front and the rear of the left and the right sides of the mine roadway and are spaced by a preset distance; after the first sensor 1 and the second sensor (3) are fixed, the two sensors are in visual pairing.
Step 102: the distance, the height difference and the roadway width between the first sensor 1 and the second sensor 3 are obtained, and then the area of the mine roadway cross section is determined, wherein the cross section is the cross section where the positions of the first sensor 1 and the second sensor 3 are located after being installed.
After the two sensors are well selected in position and are installed and fixed, the distance, the height difference and the roadway width between the two sensors of the first sensor 1 and the second sensor 3 can be obtained. As shown in fig. 2, c represents the distance between the first sensor 1 and the second sensor (3), b represents the difference in height between the first sensor 1 and the second sensor 3, and a represents the width of the mine tunnel.
Step 103: a signal is sent to the first sensor 1 via the first AD/DA unit 2 by the signal processing unit 5, and after being received by the second sensor 3, the signal is fed back to the signal processing unit 5 via the second AD/DA unit 4 and processed by the signal processing unit 5 to obtain a first frequency.
The installation and fixation of equipment are realized in the two steps, and then the monitoring of the section wind speed of the mine tunnel can be realized by using the equipment. Firstly, a signal is sent to the first sensor 1 through the first AD/DA unit 2 by the signal processing unit 5 (the signal is sent out by the signal processing unit 5 for the first time), the signal is received by the second sensor 3, and then is fed back to the signal processing unit 5 through the second AD/DA unit 4, and the signal processing unit 5 processes the signal to obtain a first frequency, specifically:
generating a first digital signal by the signal processing unit 5 and sending it to the first AD/DA unit 2; the first AD/DA unit 2 converts the first digital signal into a corresponding first analog signal and transmits the corresponding first analog signal to the first sensor (1); the first sensor 1 converts the first analog signal into a corresponding first sound and transmits it to the second sensor 3.
The second sensor 3 converts the first sound into a corresponding second analog signal and transmits to the second AD/DA unit 4; the second AD/DA unit 4 converts the second analog signal into a corresponding second digital signal and transmits the second digital signal to the signal processing unit 5; the signal processing unit 5 processes the second digital signal to obtain a first frequency.
Step 104: a signal is sent to the second sensor 3 via the second AD/DA unit 4 by means of the signal processing unit 5, and after being received by the first sensor 1, the signal is fed back to the signal processing unit 5 via the first AD/DA unit 2 and processed by the signal processing unit 5 to obtain a second frequency.
Similarly to step 103, a signal is sent to the second sensor 3 through the second AD/DA unit 4 by the signal processing unit 5 (the signal is sent by the signal processing unit 5 for the second time), and the signal is received by the first sensor 1, fed back to the signal processing unit 5 through the first AD/DA unit 2, and processed by the signal processing unit 5 to obtain a second frequency, specifically:
generating a third digital signal by the signal processing unit 5 and sending it to the second AD/DA unit 4; the second AD/DA unit 4 converts the third digital signal into a corresponding third analog signal and transmits the corresponding third analog signal to the second sensor 3; the second sensor 3 converts the third analog signal into a corresponding second sound and transmits it to the first sensor 1.
The first sensor 1 converts the second sound into a corresponding fourth analog signal and transmits the same to the first AD/DA unit 2; the first AD/DA unit 2 converts the fourth analog signal into a corresponding fourth digital signal and transmits the corresponding fourth digital signal to the signal processing unit 5; the signal processing unit 5 processes the fourth digital signal to obtain the second frequency.
It should be noted that, basically, the functions of the first sensor 1, the second sensor 3, the first AD/DA unit 2, and the second AD/DA unit 4 are identical, so the signal processing unit 5 may send a signal to the second sensor 3 through the second AD/DA unit 4, and the first sensor 1 and the first AD/DA unit 2 feedback to the signal processing unit 5 to obtain the first frequency; then the signal processing unit 5 sends a signal to the first sensor 1 through the first AD/DA unit 2, and the second frequency is obtained after the signal is fed back to the signal processing unit 5 through the second sensor 3 and the second AD/DA unit 4. The present invention is not particularly limited thereto.
Step 105: and the signal processing unit 5 is used for processing the first frequency and the second frequency to obtain the wind speed, the wind direction and the wind quantity of the section of the mine roadway.
After the first frequency and the second frequency are obtained through the previous steps, the signal processing unit 5 is utilized to process the first frequency and the second frequency, and finally the wind speed, the wind direction and the wind quantity of the section of the mine roadway are obtained. In specific calculation, the average wind speed formula of the mine tunnel section is as follows:
V＝K*(f1-f2)
in the above expression, V represents the average wind speed, f1 represents the first frequency, f2 represents the second frequency, and K represents the wind speed constant. The magnitude of V is proportional to the frequency difference between the first frequency and the second frequency, i.e., the magnitude of V is proportional to the result of f1-f 2.
When the first frequency f1 is larger than the second frequency f2, the wind direction of the section of the mine tunnel can be indicated as positive wind, and when the first frequency f1 is smaller than the second frequency f2, the wind direction of the section of the mine tunnel can be indicated as negative wind.
The calculation formula of the wind speed constant K is as follows:
K＝c2/(2*√(c2-a2-b2))
in the above expression, c represents the distance between the first sensor 1 and the second sensor 3, b represents the height difference between the first sensor 1 and the second sensor 3, and a represents the width of the mine tunnel.
The calculation formula of the air quantity per minute is as follows:
Q＝60*s*v
in the above formula, s represents the area of the cross section of the mine tunnel. In general, since the unit of wind speed is meter/second (m/s), 60 is included in the calculation formula of the air volume per minute, and if the unit of wind speed is not meter/second, the above formula may be changed according to the corresponding conversion relation. For example: assuming that the unit of wind speed is meter/minute, the calculation formula of the air quantity per minute is q=s×v, and the rest are the same.
In conclusion, the invention
The invention realizes the on-line high-precision monitoring of the full-section three-dimensional average wind speed of the roadway, greatly improves the accuracy of wind speed, wind direction and wind quantity data, and provides reliable basic data support for real-time ventilation network calculation.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (10)
1. The utility model provides a mine tunnel section wind speed monitoring devices which characterized in that, mine tunnel section wind speed monitoring devices includes: the sensor comprises a first sensor (1), a first AD/DA unit (2), a second sensor (3), a second AD/DA unit (4), a signal processing unit (5), a data communication unit (6) and a power supply unit (7);
the first sensor (1) is connected with the first AD/DA unit (2) through two lines, and the two lines work asynchronously;
the second sensor (3) is connected with the second AD/DA unit (4) through two lines, and the two lines work asynchronously; the first sensor (1) and the second sensor (3) are used for receiving or sending analog signals, and the first AD/DA unit (2) and the second AD/DA unit (4) are used for carrying out analog-to-digital conversion and digital-to-analog conversion on the analog signals;
the signal processing unit (5) is respectively connected with the first AD/DA unit (2), the second AD/DA unit (4), the data communication unit (6) and the power supply unit (7), and the signal processing unit (5) is used for receiving digital signals sent by the first AD/DA unit (2) and the second AD/DA unit (4), analyzing and calculating the digital signals and outputting calculation results;
the data communication unit (6) is respectively connected with the first AD/DA unit (2), the second AD/DA unit (4), the signal processing unit (5) and the power supply unit (7), and the data communication unit (6) is used for data conversion among different protocols and communication with external equipment;
the power supply unit (7) is respectively connected with the first AD/DA unit (2), the second AD/DA unit (4), the signal processing unit (5) and the data communication unit (6), and the power supply unit (7) is used for providing working voltage and current.
2. The mine roadway section wind speed monitoring device according to claim 1, wherein two lines are arranged between the first sensor (1) and the first AD/DA unit (2), one line is used for the first sensor (1) to send the analog signal to the first AD/DA unit (2), the first AD/DA unit (2) receives the analog signal and then performs filtering and analog-to-digital conversion, and the other line is used for the first AD/DA unit (2) to convert the digital signal from the signal processing unit (5) into an analog signal and then send the analog signal to the first sensor (1);
two lines between the second sensor (3) and the second AD/DA unit (4), wherein one line is used for the second sensor (3) to send the analog signal to the second AD/DA unit (4), the second AD/DA unit (4) receives the analog signal and then carries out filtering and analog-to-digital conversion, and the other line is used for the second AD/DA unit (4) to convert the digital signal from the signal processing unit (5) into an analog signal and then send the analog signal to the second sensor (3).
3. The mine roadway section wind speed monitoring device of claim 2, wherein the working combination between the first sensor (1) and the first AD/DA unit (2) and between the second sensor (3) and the second AD/DA unit (4) comprises:
the first sensor (1) converts the analog signal of the specific frequency f obtained by digital-to-analog conversion of the first AD/DA unit (2) into a corresponding sound to be sent out, or converts the received sound of the specific frequency f into a corresponding analog signal to be transmitted to the first AD/DA unit (2);
the second sensor (3) converts the received sound with the specific frequency f into a corresponding analog signal and transmits the corresponding analog signal to the second AD/DA unit (4), or converts the analog signal with the specific frequency f obtained by digital-to-analog conversion of the second AD/DA unit (4) into the corresponding sound and transmits the corresponding sound.
4. A mine tunnel section wind speed monitoring device according to claim 3, characterized in that the signal processing unit (5) is specifically configured to:
sampling digital signals of the first AD/DA unit (2) and the second AD/DA unit (4);
-sending analog signals of said specific frequency f to said first sensor (1) and to said second sensor (3) respectively through said first AD/DA unit (2) and said second AD/DA unit (4);
receiving transmission data from the data communication unit (6) or transmitting data to the data communication unit (6);
and analyzing and calculating the digital signals to obtain the wind speed, wind direction and wind quantity of the section of the mine roadway, and outputting the wind speed, wind direction and wind quantity to the data communication unit (6).
5. A mine tunnel section wind speed monitoring device according to claim 3, characterized in that the data communication unit (6) converts different protocol data into wired signals or wireless signals for communication with the external equipment.
6. The mine tunnel section wind speed monitoring device according to claim 1, wherein the first sensor (1) and the second sensor (3) are respectively arranged on the front and rear sides of the left and right sides of the mine tunnel and are spaced by a preset distance;
after the first sensor (1) and the second sensor (3) are fixed, the two sensors are in communication and pairing.
7. A method for monitoring the section wind speed of a mine tunnel by using the section wind speed monitoring device of the mine tunnel according to any one of claims 1 to 6, which is characterized in that the method comprises the following steps:
selecting and fixing the mounting positions of the first sensor (1) and the second sensor (3);
acquiring the distance, the height difference and the roadway width between the first sensor (1) and the second sensor (3), and further determining the area of the section of the mine roadway, wherein the section is the section of the position of the first sensor (1) and the second sensor (3) after installation;
transmitting a signal to the first sensor (1) through the first AD/DA unit (2) by the signal processing unit (5), receiving the signal by the second sensor (3), feeding back the signal to the signal processing unit (5) through the second AD/DA unit (4), and processing the signal by the signal processing unit (5) to obtain a first frequency;
transmitting a signal to the second sensor (3) through the second AD/DA unit (4) by the signal processing unit (5), wherein the signal is fed back to the signal processing unit (5) through the first AD/DA unit (2) after being received by the first sensor (1), and the signal is processed by the signal processing unit (5) to obtain a second frequency;
and processing the first frequency and the second frequency by using the signal processing unit (5) to obtain the wind speed, the wind direction and the wind quantity of the section of the mine roadway.
8. Method according to claim 7, characterized in that a signal is sent via the signal processing unit (5) via the first AD/DA unit (2) to the first sensor (1), which signal is fed back via the second AD/DA unit (4) to the signal processing unit (5) after being received by the second sensor (3), and which signal processing unit (5) obtains a first frequency, comprising:
generating a first digital signal by means of the signal processing unit (5) and transmitting it to a first AD/DA unit (2);
the first AD/DA unit (2) converts the first digital signal into a corresponding first analog signal and transmits the corresponding first analog signal to the first sensor (1);
the first sensor (1) converts the first analog signal into a corresponding first sound and sends the corresponding first sound to the second sensor (3);
the second sensor (3) converts the first sound into a corresponding second analog signal and transmits the second analog signal to the second AD/DA unit (4);
the second AD/DA unit (4) converts the second analog signal into a corresponding second digital signal and transmits the second digital signal to the signal processing unit (5);
the signal processing unit (5) processes the second digital signal to obtain the first frequency.
9. Method according to claim 7, characterized in that a signal is sent via the second AD/DA unit (4) to the second sensor (3) once by the signal processing unit (5), which signal is fed back via the first AD/DA unit (2) to the signal processing unit (5) after being received by the first sensor (1), and which signal processing unit (5) processes to obtain a second frequency, comprising:
generating a third digital signal by means of the signal processing unit (5) and sending it to the second AD/DA unit (4);
the second AD/DA unit (4) converts the third digital signal into a corresponding third analog signal and transmits the corresponding third analog signal to the second sensor (3);
the second sensor (3) converts the third analog signal into a corresponding second sound and sends the second sound to the first sensor (1);
the first sensor (1) converts the second sound into a corresponding fourth analog signal and transmits the fourth analog signal to the first AD/DA unit (2);
the first AD/DA unit (2) converts the fourth analog signal into a corresponding fourth digital signal and transmits the fourth digital signal to the signal processing unit (5);
the signal processing unit (5) processes the fourth digital signal to obtain the second frequency.
10. The method according to claim 7, characterized in that the processing of the first frequency and the second frequency with the signal processing unit (5) results in wind speed, wind direction, wind volume of the mine tunnel section, comprising:
the average wind speed formula of the mine tunnel section is as follows:
V＝K*(f1-f2)
in the above formula, V represents the average wind speed, f1 represents the first frequency, f2 represents the second frequency, and K represents a wind speed constant. The magnitude of V is proportional to the frequency difference between the first frequency and the second frequency;
when the first frequency f1 is larger than the second frequency f2, the wind direction of the section of the mine roadway is positive wind, and when the first frequency f1 is smaller than the second frequency f2, the wind direction of the section of the mine roadway is negative wind;
the calculation formula of the wind speed constant K is as follows:
K＝c2/(2*√(c2-a2-b2))
in the above formula, c represents the distance between the first sensor (1) and the second sensor (3), b represents the height difference between the first sensor (1) and the second sensor (3), and a represents the width of a mine roadway;
the calculation formula of the air quantity per minute is as follows:
Q＝60*s*v
in the above formula, s represents the area of the section of the mine roadway.
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