CN116557032A - Mine roadway section wind speed monitoring device and section wind speed monitoring method - Google Patents

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

A wind speed monitoring device and method for monitoring section wind speed in mine roadway

technical field

The invention relates to the technical field of one connection and three defenses in underground mines, in particular to a mine roadway cross-section wind speed monitoring device and a method for realizing cross-section wind speed monitoring using the mine roadway cross-section wind speed monitoring device.

Background technique

Mine ventilation safety is the basis for ensuring normal underground production. The monitoring of wind speed, wind direction, and air volume and the adjustment of air volume are a regular key task in the management of underground ventilation technology, which is extremely important to ensure the safety of underground personnel. At present, fixed wind measurement stations in underground roadways or temporary wind measurement points such as mining faces are mainly completed manually, and real-time monitoring cannot be achieved, and there are errors; while the wind speed sensor in the safety monitoring system has realized online monitoring, it can only be used Point wind speed monitoring cannot realize online monitoring of wind speed, wind direction, and air volume at cross-sections.

Therefore, neither the current manual wind speed measurement method nor the wind speed monitoring method at safety monitoring points can meet the industry needs of roadway ventilation, and it is difficult to realize online high-precision monitoring of wind speed, wind direction, and air volume at the roadway section to provide reliable basic data for real-time ventilation network calculations.

Contents of the invention

In view of the above problems, the present invention proposes a mine roadway cross-section wind speed monitoring device and a method for realizing cross-section wind speed monitoring using the mine roadway cross-section wind speed monitoring device.

An embodiment of the present invention provides a mine roadway section wind speed monitoring device, said mine roadway section wind speed monitoring device includes: a first sensor, a first AD/DA unit, a second sensor, a second AD/DA unit, and a signal processing unit , data communication unit, power supply unit;

The first sensor is connected to the first AD/DA unit through two lines, and the two lines work asynchronously;

The second sensor is connected to the second AD/DA unit through two lines, and the two lines work asynchronously; both the first sensor and the second sensor are used to receive or send analog signals, so Both the first AD/DA unit and the second AD/DA unit are used to perform analog-to-digital conversion and digital-to-analog conversion on the analog signal;

The signal processing unit is respectively connected to the first AD/DA unit, the second AD/DA unit, the data communication unit, and the power supply unit, and the signal processing unit is used to receive the first AD /DA unit and the digital signal sent by the second AD/DA unit, and analyzing and calculating the digital signal and outputting a calculation result;

The data communication unit is respectively connected to the first AD/DA unit, the second AD/DA unit, the signal processing unit, and the power supply unit, and the data communication unit is used for data conversion between different protocols and communicate with external devices;

The power supply unit is respectively connected to the first AD/DA unit, the second AD/DA unit, the signal processing unit, and the data communication unit, and the power supply unit is used to provide working voltage and current.

Optionally, there are two lines between the first sensor and the first AD/DA unit, one of which is used for the first sensor to send the analog signal to the first AD/DA unit, The first AD/DA unit performs filtering and analog-to-digital conversion after receiving the analog signal, and another line is used for the first AD/DA unit to convert the digital signal from the signal processing unit into an analog signal Afterwards, sending the analog signal to the first sensor;

Two lines between the second sensor and the second AD/DA unit, one of which is used for the second sensor to send the analog signal to the second AD/DA unit, and the second The AD/DA unit performs filtering and analog-to-digital conversion after receiving the analog signal, and the other line is used for the second AD/DA unit to convert the digital signal from the signal processing unit into an analog signal and send The second sensor sends the analog signal.

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 includes:

The first sensor converts the analog signal of a specific frequency f obtained by the digital-to-analog conversion of the first AD/DA unit into a corresponding sound and sends it out, or converts the received sound of a specific frequency f into a corresponding analog signal, And transmit to the first AD/DA unit;

The second sensor converts the received sound of a specific frequency f into a corresponding analog signal, and transmits it to the second AD/DA unit, or converts the second AD/DA unit to a specific frequency obtained by digital-to-analog conversion The analog signal of f is converted into the corresponding sound and sent out.

Optionally, the signal processing unit is specifically configured to:

sampling digital signals of the first AD/DA unit and the second AD/DA unit;

sending the analog signal of the specific frequency f to the first sensor and the second sensor respectively through the first AD/DA unit and the second AD/DA unit;

receiving transmission data from the data communication unit, or sending data to the data communication unit;

The digital signal is analyzed and calculated to obtain the wind speed, wind direction, and air volume of the mine roadway section, and output to the data communication unit.

Optionally, the data communication unit converts data of different protocols into wired signals or wireless signals, and then communicates with the external device.

Optionally, the first sensor and the second sensor are respectively arranged at the front and rear of the left and right sides of the mine roadway, and are separated by a preset distance;

After both the first sensor and the second sensor are fixed, they are visually paired.

An embodiment of the present invention provides a method for monitoring the wind speed of a mine roadway section using the above-mentioned mine roadway section wind speed monitoring device, the method comprising:

Select and fix the respective installation positions of the first sensor and the second sensor;

Obtain the distance between the first sensor and the second sensor, the height difference, and the width of the roadway, and then determine the area of the mine roadway section, and the section is the first sensor and the second sensor. The section where the rear position is located;

Through the signal processing unit, a signal is sent to the first sensor via the first AD/DA unit, and after the signal is received by the second sensor, it is fed back to the signal processing unit via the second AD/DA unit, and obtain the first frequency after being processed by the signal processing unit;

Through the signal processing unit, a signal is sent to the second sensor through the second AD/DA unit. After the signal is received by the first sensor, it is fed back to the second sensor through the first AD/DA unit. a signal processing unit, and the second frequency is obtained after being processed by the signal processing unit;

The first frequency and the second frequency are processed by the signal processing unit to obtain the wind speed, wind direction, and air volume of the mine roadway section.

Optionally, the signal processing unit sends a signal to the first sensor through the first AD/DA unit, and after the signal is received by the second sensor, it is fed back to the first sensor through the second AD/DA unit. A signal processing unit, and the first frequency is obtained after being processed by the signal processing unit, including:

generating a first digital signal through the signal processing unit and sending it to the first AD/DA unit;

The first AD/DA unit converts the first digital signal into a corresponding first analog signal, and transmits it to the first sensor;

The first sensor converts the first analog signal into a corresponding first sound and sends it to the second sensor;

The second sensor converts the first sound into a corresponding second analog signal and transmits it to the second AD/DA unit;

The second AD/DA unit converts the second analog signal into a corresponding second digital signal, and transmits it to the signal processing unit;

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 via the second AD/DA unit, and after the signal is received by the first sensor, it is sent to the second sensor via the first AD/DA unit. Feedback to the signal processing unit, and after being processed by the signal processing unit, the second frequency is obtained, including:

generating a third digital signal through the signal processing unit and sending it to the second AD/DA unit;

The second AD/DA unit converts the third digital signal into a corresponding third analog signal, and transmits it to the second sensor;

The second sensor converts the third analog signal into a corresponding second sound and sends it to the first sensor;

The first sensor converts the second sound into a corresponding fourth analog signal and transmits it to the first AD/DA unit;

The first AD/DA unit converts the fourth analog signal into a corresponding fourth digital signal, and transmits it to the signal processing unit;

The signal processing unit processes the fourth digital signal to obtain the second frequency.

Optionally, using the signal processing unit to process the first frequency and the second frequency to obtain the wind speed, wind direction, and air volume of the mine roadway section, including:

The average wind speed formula of the mine roadway section is:

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 size of V is proportional to the frequency difference between the first frequency and the second frequency;

When the first frequency f1 is greater than the second frequency f2, it means that the wind direction of the mine roadway section is positive wind; when the first frequency f1 is smaller than the second frequency f2, it means that the mine roadway section The wind direction is against the wind;

The calculation formula of the wind speed constant K is:

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 formula for calculating air volume per minute is:

Q＝60*s*v

In the above formula, s represents the area of the section of the mine roadway.

The mine roadway section wind speed monitoring device provided by the present invention includes: 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 to the first AD/DA unit through two lines, and the two lines work asynchronously; the second sensor is connected to the second AD/DA unit through two lines, and the two lines work asynchronously; Both the first sensor and the second sensor are used to receive or send analog signals, and the first AD/DA unit and the second AD/DA unit are both used to perform analog-to-digital conversion and digital-to-analog conversion on the analog signals.

The signal processing unit is connected to the first AD/DA unit, the second AD/DA unit, the data communication unit, and the power supply unit respectively, and the signal processing unit is used to receive the digital signals sent by the first AD/DA unit and the second AD/DA unit , and analyze and calculate the digital signal and output the calculation result.

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 the data communication unit is used for data conversion between different protocols and communication with external devices.

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 the power supply unit is used to provide working voltage and current.

The present invention utilizes the wind speed monitoring device for mine roadway sections to realize online high-precision monitoring of the three-dimensional average wind speed of the entire roadway section, greatly improving the accuracy of wind speed, wind direction, and air volume data, and providing reliable solutions for real-time ventilation network calculations. Basic data support.

Description of 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 embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same components. In the attached picture:

Fig. 1 is the structural block diagram of the mine roadway cross-section wind speed monitoring device of the embodiment of the present invention;

Fig. 2 is an installation position of the first sensor 1 and the second sensor 3 in the embodiment of the present invention, and a schematic diagram of the principle of wind speed monitoring of the roadway section;

Fig. 3 is a flow chart of a method for monitoring the wind speed of a mine roadway section by using the mine roadway section wind speed monitoring device in an embodiment of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, only a part of the embodiments of the present invention, not all the embodiments, and are not intended to limit the present invention.

With reference to Fig. 1, have shown the structural block diagram of the mine roadway section wind speed monitoring device of the embodiment of the present invention, the mine roadway section wind speed monitoring device of the present invention comprises: the first sensor 1, the first AD/DA unit 2, the 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 and the first AD/DA unit 2 are connected through two lines, and the two lines work asynchronously; the second sensor 3 and the second AD/DA unit 4 are also connected through two lines, and the two lines work asynchronously. Lines also work asynchronously.

Both the first sensor 1 and the second sensor 3 are used to receive or send analog signals, and the first AD/DA unit 2 and the second AD/DA unit 4 are both used to perform 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 to receive the first AD/DA unit 2 and the second AD The digital signal sent by the /DA unit 4 analyzes and calculates the digital signal and outputs the calculation result.

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 between different protocols and communication with external devices to communicate. External devices include but are not limited to: mobile phones, 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. Voltage and current.

In the specific workflow, there are two lines between the first sensor 1 and the first AD/DA unit 2, one of which 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 performs filtering and analog-to-digital conversion after receiving the analog signal; 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 the first Sensor 1 sends an analog signal. Asynchronous work is achieved through this design.

Similarly, two lines between the second sensor 3 and the second AD/DA unit 4, one of which 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 Filtering and analog-to-digital conversion are performed after receiving the analog signal; 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 .

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, there can be multiple working combinations, and a preferred working combination includes:

The first sensor 1 converts the analog signal of a specific frequency f obtained by the digital-to-analog conversion of the first AD/DA unit 2 into a corresponding sound and sends it out, or the first sensor 1 converts the received sound of a specific frequency f (by the second sensor 3 sending) into a corresponding analog signal, and transmitted to the first AD/DA unit 2.

The second sensor 3 converts the received sound of a specific frequency f into a corresponding analog signal, and transmits it to the second AD/DA unit 4, or the second sensor 3 converts the sound of the second AD/DA unit 4 into a specific The analog signal of frequency f is converted into the corresponding sound and sent out.

In the actual workflow, the signal processing unit 5 is specifically used for:

1), sampling the digital signals of the first AD/DA unit 2 and the second AD/DA unit 4;

2), through the first AD/DA unit 2 and the second AD/DA unit 4, respectively send an analog signal of a specific frequency f to the first sensor 1 and the second sensor 3;

3), receiving transmission data from the data communication unit 6, or sending data to the data communication unit 6;

4) Analyze and calculate the digital signal (from the first AD/DA unit 2 and the second AD/DA unit 4) to obtain the wind speed, wind direction, and air volume of the mine roadway section, and output to the data communication unit 6.

The data communication unit 6 can convert data of different protocols into wired signals or wireless signals, so as to realize communication with external devices.

In addition, on 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 in the front and rear of the left and right sides of the mine roadway, and separated by a preset distance; After the sensors 3 are fixed, the two can be visually paired.

Referring to Fig. 2, an exemplary installation position of the first sensor 1 and the second sensor 3 is shown. This Fig. 2 is combined with the above-mentioned wind speed monitoring device for the mine roadway section shown in Fig. 3 to realize the wind speed monitoring of the mine roadway section The flow chart of the method can better understand the principle of roadway section wind speed monitoring. The method for realizing the wind speed monitoring of the mine roadway section using the mine roadway section wind speed monitoring device according to the embodiment of the present invention includes:

Step 101: Select and fix the respective installation positions of the first sensor 1 and the second sensor 3 .

As described above, it is first necessary to select and fix the respective installation positions of the first sensor 1 and the second sensor 3 . For example: the first sensor 1 and the second sensor 3 are respectively arranged at the front and rear of the left and right sides of the mine roadway, and are separated by a preset distance; after the first sensor 1 and the second sensor (3) are fixed, they are visually paired.

Step 102: Obtain the distance, height difference, and roadway width between the first sensor 1 and the second sensor 3, and then determine the area of the mine roadway section, which is where the first sensor 1 and the second sensor 3 are located after installation section.

After the two sensors are selected and fixed, the distance, height difference, and roadway width between the first sensor 1 and the second sensor 3 can be obtained. As shown in Figure 2, 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 roadway.

Step 103: Send a signal to the first sensor 1 through the first AD/DA unit 2 through the signal processing unit 5, and after the signal is received by the second sensor 3, it is fed back to the signal processing unit 5 through the second AD/DA unit 4 , and the first frequency is obtained after being processed by the signal processing unit 5 .

The first two steps realize the installation and fixation of the equipment, and then use these equipment to realize the wind speed monitoring of the mine roadway section. First pass through the signal processing unit 5, and send a signal to the first sensor 1 through the first AD/DA unit 2 (this signal is the first signal sent by the signal processing unit 5), after the signal is received by the second sensor 3, it is sent to the first sensor 1 through the first AD/DA unit 2. Two AD/DA unit 4 feeds back to the signal processing unit 5, and obtains the first frequency after being processed by the signal processing unit 5, specifically:

The first digital signal is generated by the signal processing unit 5 and sent 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 it to the first sensor (1 ); the first sensor 1 converts the first analog signal into a corresponding first sound, and sends it to the second sensor 3 .

The second sensor 3 converts the first sound into a corresponding second analog signal, and transmits it 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 The signal is transmitted to the signal processing unit 5; the signal processing unit 5 processes the second digital signal to obtain the first frequency.

Step 104: Send a signal to the second sensor 3 through the second AD/DA unit 4 through the signal processing unit 5, and after the signal is received by the first sensor 1, it is fed back to the signal processing unit 5 through the first AD/DA unit 2 , and the second frequency is obtained after being processed by the signal processing unit 5 .

Similar to step 103, the signal processing unit 5 sends a signal to the second sensor 3 through the second AD/DA unit 4 (this signal is the second signal sent by the signal processing unit 5), and the signal is sent by the first sensor 1 After receiving, it is fed back to the signal processing unit 5 through the first AD/DA unit 2, and the second frequency is obtained after being processed by the signal processing unit 5, specifically:

The third digital signal is generated by the signal processing unit 5 and sent 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 it to the second sensor 3; The second sensor 3 converts the third analog signal into a corresponding second sound, and sends it to the first sensor 1 .

The first sensor 1 converts the second sound into a corresponding fourth analog signal, and transmits it 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 The signal is transmitted 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, in essence, 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 completely the same, so the above process can also be the signal processing unit 5 First send a signal to the second sensor 3 through the second AD/DA unit 4, and then pass the first sensor 1 and the first AD/DA unit 2 to feed back to the signal processing unit 5 to obtain the first frequency; then the signal processing unit 5 passes through the second An AD/DA unit 2 sends a signal to the first sensor 1, which is fed back to the signal processing unit 5 through the second sensor 3 and the second AD/DA unit 4 to obtain a second frequency. The present invention does not specifically limit it.

Step 105: Use the signal processing unit 5 to process the first frequency and the second frequency to obtain the wind speed, wind direction, and air volume 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 used to process the first frequency and the second frequency, and finally the wind speed, wind direction and air volume of the mine roadway section are obtained. In terms of specific calculation, the average wind speed formula of mine roadway section is:

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 the wind speed constant. The magnitude of V is proportional to the frequency difference between the first frequency and the second frequency, that is, the magnitude of V is proportional to the result of f1-f2.

When the first frequency f1 is greater than the second frequency f2, it can indicate that the wind direction of the mine roadway section is positive wind, and when the first frequency f1 is smaller than the second frequency f2, it can indicate that the wind direction of the mine roadway section is reverse wind.

The calculation formula of the wind speed constant K is:

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 the mine roadway.

The formula for calculating air volume per minute is:

Q＝60*s*v

In the above formula, s represents the area of the mine roadway section. Under normal circumstances, the unit of wind speed is: m/s (m/s), so there is 60 in the calculation formula of air volume per minute, if the unit of wind speed is not: m/s, then change the above formula according to the corresponding conversion relationship. Can. For example: assuming that the unit of wind speed is: m/min, then the calculation formula of the air volume per minute is Q=s*v, and so on for the rest of the cases.

In summary, the present invention

The invention realizes online high-precision monitoring of the three-dimensional average wind speed of the full section of the roadway, greatly improves the accuracy of wind speed, wind direction, and air volume data, and provides reliable basic data support for real-time ventilation network calculation.

Having described preferred embodiments of embodiments of the present invention, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be interpreted to cover the preferred embodiment and all changes and modifications which fall within the scope of the embodiments of the present invention.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or terminal equipment. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, many forms can also be made without departing from the gist of the present invention and the protection scope of the claims, and these all belong to the protection of 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.