CN111273055A - Single-point measurement and control device and method for average wind speed of mine roadway - Google Patents
Single-point measurement and control device and method for average wind speed of mine roadway Download PDFInfo
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- CN111273055A CN111273055A CN202010050498.8A CN202010050498A CN111273055A CN 111273055 A CN111273055 A CN 111273055A CN 202010050498 A CN202010050498 A CN 202010050498A CN 111273055 A CN111273055 A CN 111273055A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P11/00—Measuring average value of speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
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Abstract
The embodiment of the invention discloses a single-point measurement and control device and a single-point measurement and control method for average wind speed of a mine tunnel, which comprises the following steps: determining a measurement and control point in the roadway, and constructing a wind speed measurement system at the measurement and control point; setting the front area and the rear area of the measurement and control point as measurement and control areas, and judging whether the current state of the measurement and control areas is suitable for measuring the wind speed; according to the judgment result, the wind speed measuring system is operated to measure the wind speed of a single point, so that the influence of mining operation and tunnel traffic on wind speed measurement can be avoided, the measured average wind speed is not interfered by temporary factors, and the detection accuracy is improved; converting the single-point wind speed measurement result into an average wind speed; and comparing the measured average wind speed with the average wind speed set by the system, if the average wind speed is not within the allowable range of the average wind speed, transmitting an adjusting signal to a fan control system, adjusting the fan according to the wind speed in the tunnel, and controlling the wind speed in the tunnel to meet the production requirement.
Description
Technical Field
The embodiment of the invention belongs to the technical field of mine ventilation, and particularly relates to a single-point measurement and control device and method for average wind speed of mine roadways.
Background
Mine ventilation is an important part in mining operation, and the measurement of the average wind speed in a roadway is the basis for ensuring the reliable operation of a mine ventilation system and the important work content of mine ventilation management; the ventilation condition in the roadway can be timely and effectively mastered by measuring the average wind speed; the accuracy and the real-time performance of the average wind speed measurement have important practical significance on mine safety.
The traditional tunnel wind speed measurement usually adopts a line method (that is, a wind meter is used for moving on a tunnel section at a constant speed according to a certain line to calculate the average wind speed), or a fixed-point method (that is, the tunnel section is divided into a plurality of grids, and the average wind speed in the tunnel is calculated according to the wind speed and the area of each small grid), wherein the two methods have higher measurement accuracy, but the measurement process is more complicated and is not suitable for long-term monitoring of the tunnel wind speed, for example, CN201811534391.X is a large-section tunnel wind quantity accurate measurement device and method, and the wind speed at different positions on the tunnel section is measured in a groove rail by using one wind meter to further calculate the average wind speed.
Compared with the method, the single-point anemometry has the special advantages of convenient measurement and suitability for long-term monitoring, for example, the prior disclosed measurement technology and method have the following advantages: CN 201610896860.7A single-point statistical measurement method for average wind speed of a roadway, which utilizes multi-point multiple measurement to obtain a proportionality coefficient Kv between the average wind speed and the single-point wind speed under a statistical method, thereby obtaining the average wind speed by reverse calculation of the single-point measurement; the method for measuring the average wind speed of the CN201810682683.1 roadway comprises the steps of correcting the average wind speed by using a single-point wind speed to obtain the final average wind speed through a constructed section wind speed distribution formula; and CN201820837302.8 a mine ventilation wind speed and wind pressure monitoring system and the like. The method provides a new way for measuring the average wind speed, is convenient to operate, but the measurement precision is difficult to guarantee, and the method cannot cooperate with a fan to realize automatic regulation of the wind speed.
Disclosure of Invention
Therefore, the embodiment of the invention provides a single-point measurement and control device and a single-point measurement and control method for average wind speed of a mine tunnel, which can reliably and accurately monitor the average wind speed in the tunnel in real time on the premise of not influencing mining operation and tunnel passing, can cooperatively work with a fan, and realize automatic regulation of the wind speed, thereby ensuring mine ventilation safety, and solving the problems that the measurement accuracy is difficult to ensure, the cooperative work with the fan cannot be realized, and the automatic regulation of the wind speed is realized in the prior art.
In order to achieve the above object, an embodiment of the present invention provides the following:
a single-point measurement and control method for average wind speed of mine roadways comprises the following steps:
s100, determining a measurement and control point in a roadway, and constructing a wind speed measurement system at the measurement and control point;
s200, setting the front area and the rear area of the measurement and control point as measurement and control areas, and judging whether the current state of the measurement and control areas is suitable for measuring the wind speed;
s300, operating a wind speed measuring system according to a judgment result to measure the single-point wind speed;
s400, converting the single-point wind speed measurement result into an average wind speed;
s500, comparing the measured average wind speed with the average wind speed set by the system, and if the average wind speed is within the allowable range, not adjusting the air volume of the fan; if the wind speed is not within the allowable range of the average wind speed, the adjusting signal is transmitted to a fan control system to adjust the air quantity of the fan.
As a preferred scheme of the present invention, the specific process of judging the current state includes:
s201, installing object motion monitoring sensors at the front end and the rear end of the measurement and control point to construct an object motion monitoring system;
s202, monitoring whether an object passes through the measurement and control area or not through the motion monitoring system;
and S203, judging the monitoring result, if no object passes through the monitoring result, indicating that the wind speed can be measured in the current state, otherwise, not measuring the wind speed.
According to a preferable scheme of the invention, the wind speed measuring system comprises a wind speed sensor and a connecting rod, the wind speed sensor is connected with the connecting rod, the connecting rod is a swing type connecting rod, and the connecting rod is fixed in a roadway.
As a preferable scheme of the invention, the specific process for measuring the single-point wind speed comprises the following steps:
s301, the wind speed sensor is fixed on the top surface of the roadway through the connecting rod, and the single-point wind speed of the section of the roadway is monitored to obtain the single-point wind speed of the top surface;
s302, analyzing the top surface single-point wind speed to obtain a top surface wind speed fluctuation value;
s303, comparing the top surface wind speed fluctuation value with a preset stirring range, and when the top surface wind speed fluctuation value exceeds the preset fluctuation range, the connecting rod acts to change the position of the wind speed sensor to the middle of the section of the roadway so as to measure the wind speed of the central point of the section of the roadway.
The embodiment of the invention also provides a single-point measurement and control device for the average wind speed of the mine tunnel, which comprises a wind speed measuring system for measuring the wind speed in the tunnel and an object motion detecting system for measuring whether an object passes through a detection area, wherein the object motion detecting system is connected with the wind speed measuring system, and the wind speed measuring system is connected with a fan control system in the tunnel;
wind speed survey system include air velocity transducer and connecting rod, air velocity transducer passes through the connecting rod is installed on the tunnel top surface, air velocity transducer include wind speed probe and signal processor, the signal output that the wind speed probe will obtain detecting gives signal processor, signal processor converts analog signal into digital signal through the AD conversion to convert into single-point wind speed, convert into the average wind speed in the tunnel based on single-point wind speed again, signal processor transmits the fan control system in the tunnel with average wind speed signal, in order to realize the wind speed and adjust.
As a preferable scheme of the present invention, the object motion monitoring system includes two object motion monitoring sensors, the two object motion monitoring sensors are respectively installed on the front and rear sides of the wind speed sensor, and are installed on the top surface of the roadway at a distance of more than 10 meters from the wind speed sensor, and the object motion monitoring sensors transmit signals to the signal processor to determine whether the current state can be subjected to wind speed monitoring.
As a preferred scheme of the present invention, the connecting rod is a swing type connecting rod, a rotating shaft is vertically connected to a top end of the connecting rod, the rotating shaft is fixed to a top surface of a roadway through a support, a bottom end of the connecting rod is connected to the wind speed sensor, the rotating shaft is rotatably disposed on the support in a penetrating manner, a swing motor is disposed on the support, an output shaft of the swing motor is connected to the rotating shaft, and the swing motor works to change a position of the wind speed sensor, so as to measure a wind speed at a single point or multiple points within a swing angle.
As a preferable scheme of the invention, the connecting rod comprises a telescopic cavity arranged at the midpoint of the top of the roadway, the telescopic cavity is vertically arranged and is internally provided with a telescopic cylinder, the output end of the telescopic cylinder is vertically downward and is connected with a telescopic rod, the wind speed sensor is arranged at the lower end of the telescopic rod, when the output end of the telescopic cylinder is completely contracted, the wind speed sensor is positioned at the midpoint of the top of the section of the roadway, and when the output end of the telescopic cylinder is completely extended, the wind speed sensor is positioned at the center of the section of the roadway.
As a preferable scheme of the invention, the connecting rod includes a base rod and a sliding sleeve, the rotating shaft is disposed at the top end of the base rod, the lower end of the base rod is connected with the sliding rod, the lower end of the sliding rod is inserted into the sliding sleeve, a return spring is connected between the sliding sleeve and the base rod, the return spring is sleeved outside the sliding rod, the top of the roadway is provided with a limit seat, when the connecting rod is horizontal, the return spring is in a loose state, the wind speed sensor is located at the midpoint of the top of the roadway section, and when the connecting rod is in contact with the limit seat, the sliding sleeve slides down to the center of the roadway section under the combined action of gravity and the return spring.
As a preferable scheme of the invention, the wind speed probe is a hot-bulb type, impeller type or ultrasonic type wind speed sensor, and the object motion monitoring sensor is an active infrared motion sensor.
The embodiment of the invention has the following advantages:
the invention can monitor transportation equipment and personnel in a tunnel monitoring area, avoids the influence of mining operation and tunnel traffic, ensures that the measured average wind speed is not interfered by temporary factors, effectively improves the detection accuracy, can adjust the fan according to the wind speed in the tunnel, controls the wind speed in the tunnel to meet the production requirement, can swing from the top of the tunnel section to the center of the section of the tunnel, realizes multi-point measurement, improves the measurement accuracy, can monitor the fluctuation condition of the wind speed on the top surface, measures the average wind speed at the center of the section of the tunnel, and is favorable for reducing the measurement error of the average wind speed.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic diagram of a single-point measurement and control process of average wind speed according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a single point measurement and control process of average wind speed under top surface monitoring according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the overall structure of a single-point measurement and control device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a lower connecting rod of a roadway section structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of another structure of a lower connecting rod of the roadway section structure according to the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of the main fan according to the embodiment of the present invention when the main fan is used for measuring and controlling the average wind speed;
fig. 7 is a detailed structural view of the connecting rod shown in fig. 5 according to the embodiment of the present invention.
In the figure:
1-a wind speed determination system; 2-an object motion monitoring system; 3-a fan control system; 4-a wind speed sensor; 5-a connecting rod; 6-wind speed probe; 7-a signal processor; 8-a limiting seat; 9-a rotating shaft; 10-a scaffold; 11-a swing motor; 12-a base shaft; 13-a sliding sleeve; 14-a slide bar; 15-a return spring; 16-a telescopic cavity; 17-a telescopic cylinder; 18-telescopic rod.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a single-point measurement and control method for average wind speed of mine roadways, which includes the following steps:
firstly, determining a measurement and control point in a roadway, and constructing a wind speed measurement system at the measurement and control point, wherein the wind speed measurement system comprises a wind speed sensor and a connecting rod, the wind speed sensor is connected with the connecting rod, the connecting rod is a swing type connecting rod, and the connecting rod is fixed in the roadway;
secondly, setting the front area and the rear area of the measurement and control point as measurement and control areas, installing object motion monitoring sensors at two ends of the measurement and control areas, constructing an object motion monitoring system, monitoring whether an object passes through the measurement and control areas through the motion monitoring system, judging a monitoring result, if no object passes through the monitoring area, indicating that the current state can be used for measuring the wind speed, otherwise, indicating that the current state cannot be used;
thirdly, after judging that the current state can be subjected to wind speed measurement, fixing a wind speed sensor at the top of the roadway section through a connecting rod, monitoring the single-point wind speed of the top surface of the roadway to obtain the single-point wind speed of the top surface, analyzing the single-point wind speed of the top surface to obtain a top surface wind speed fluctuation value, comparing the top surface wind speed fluctuation value with a preset stirring range, and when the top surface wind speed fluctuation value exceeds the preset stirring range, moving the connecting rod to change the position of the wind speed sensor to the middle of the roadway section, measuring the wind speed of the central point of the roadway to obtain a single-point wind speed measurement result;
fourthly, converting the single-point wind speed measurement result into an average wind speed, wherein the conversion relation can be converted by referring to CN201610896860.7 and CN 201810682683.1;
fifthly, comparing the measured average wind speed with the average wind speed set by the system, and if the average wind speed is within the allowable range, not adjusting the air quantity of the fan; if the wind speed is not within the allowable range of the average wind speed, the adjusting signal is transmitted to a fan control system to adjust the air quantity of the fan.
The method can monitor transportation equipment and personnel in a tunnel monitoring area, avoids the influence of mining operation and the tunnel after passing, ensures that the measured average wind speed is not interfered by temporary factors, effectively improves the detection accuracy, can adjust the fan according to the wind speed in the tunnel, controls the wind speed in the tunnel to meet the production requirement, can swing from the top surface of the tunnel to the center of the section of the tunnel, realizes multi-point measurement, improves the measurement accuracy, can monitor the fluctuation condition of the wind speed on the top surface, measures the average wind speed at the center of the section of the tunnel, and is favorable for reducing the measurement error of the average wind speed.
As shown in fig. 3 to 7, the embodiment of the present invention further provides a single-point measurement and control device for average wind speed of a mine tunnel, which includes a wind speed measurement system 1 and an object motion detection system 2, the object motion detection system 2 is connected to the wind speed measurement system 1, the wind speed measurement system 1 is connected to a fan control system 3 in the tunnel, wherein the object motion detection system 2 can detect whether an object passes through the detection region, the wind speed measurement system 1 measures the wind speed in the tunnel when it is determined that no person, vehicle or other object passes through the detection region, the fan control system 3 adjusts the wind speed of the fan when the measured wind speed exceeds an allowable range, so as to realize reliable high-precision monitoring of the average wind speed in the mine tunnel in real time on the premise of not affecting mining operation and tunnel passage, and realize automatic wind speed adjustment by cooperating with the fan, the ventilation safety of the mine is ensured.
This embodiment can realize transportation equipment and personnel monitoring in the tunnel monitoring area, ensures that the average wind speed of surveying is not disturbed by temporary factor, effectively improves the accuracy that detects, can carry out automatically regulated to the fan simultaneously, and the wind speed in the control tunnel satisfies the production needs.
As shown in fig. 4, 5 and 7, the wind speed measurement system 1 in the present embodiment includes a wind speed sensor 4 and a connecting rod 5, the wind speed sensor 4 is mounted on the top surface of the roadway through the connecting rod 5, the wind speed sensor 4 includes a wind speed probe 6 and a signal processor 7, the wind speed probe 6 is a thermo-sphere type, impeller type or ultrasonic type wind speed sensor, the wind speed probe 6 outputs a detected signal to the signal processor 7, the signal processor 7 converts an analog signal into a digital signal through a/D conversion, converts the digital signal into a single-point wind speed, converts the single-point wind speed into an average wind speed in the roadway, and transmits the average wind speed signal to the fan control system 3 in the roadway by the signal processor 7 to realize wind speed adjustment.
In the above description, the conversion relationship used for converting the single point wind speed measurement result into the average wind speed may be referred to the above patent documents CN201610896860.7 and CN 201810682683.1.
As shown in fig. 3, in this embodiment, the object motion monitoring system 2 includes two object motion monitoring sensors, the object motion monitoring sensors are active infrared motion sensors, the two object motion monitoring sensors are respectively installed on the front and rear sides of the wind speed sensor 4, and are installed on the top surface of the roadway with a distance of more than 10 meters from the wind speed sensor 4, the object motion monitoring sensors transmit signals to the signal processor 7, it is determined whether the current state can be monitored for the wind speed by determining whether there are people in the area, vehicles and other objects, and if there are no people in the area, vehicles and other objects pass through, it is indicated that the current state can be monitored for the wind speed.
As shown in fig. 4 and 5, in this embodiment, the connecting rod 5 is a swing type connecting rod, the top end of the connecting rod 5 is vertically connected with a rotating shaft 9, the rotating shaft 9 is fixed on the top surface of the roadway through a support 10, the bottom end of the connecting rod 5 is connected with the wind speed sensor 4, the rotating shaft 9 is rotatably arranged on the support 10 in a penetrating manner, the support 10 is provided with a swing motor 11, an output shaft of the swing motor 11 is connected with the rotating shaft 9, the connecting shaft 9 is fixedly connected with the connecting rod 5, so that when the swing motor 11 works to drive the rotating shaft 9, the connecting rod 5 can swing in the roadway to change the position of the wind speed sensor 4, thereby realizing the wind speed measurement of a single point or a plurality of points in the swing angle, measuring the wind speeds of.
As shown in fig. 4, in the present embodiment, the connecting rod 5 includes a telescopic cavity 16 disposed at a midpoint of the top of the roadway, the telescopic cavity 16 is vertically disposed and is provided with a telescopic cylinder 17 therein, an output end of the telescopic cylinder 17 is vertically downward and is connected with a telescopic rod 18, the wind speed sensor 4 is mounted at a lower end of the telescopic rod 18, when the output end of the telescopic cylinder 17 is completely contracted, the wind speed sensor 4 is located at the midpoint of the top of the roadway section, and when the output end of the telescopic cylinder 17 is completely extended, the wind speed sensor 4 is located at a center of the roadway section. Through this setting, when telescopic cylinder 17's output contracts completely, air velocity transducer 4 is located the mid point department at tunnel section top, can measure the wind speed of tunnel top surface, and when telescopic cylinder 17's output stretches out completely, air velocity transducer 4 is located tunnel sectional center department, thereby realize measuring the wind speed of tunnel section central point, make this embodiment can be in the undulant condition of top surface monitoring wind speed, put at tunnel section central point and survey average wind speed, be favorable to reducing average wind speed's measuring error, promote measurement accuracy.
In the above-mentioned embodiment, this kind of connecting rod 5's the mode of setting can realize monitoring the undulant condition of wind speed at the top surface, average wind speed is surveyed to section central point in the tunnel, thereby reduce the measuring error of average wind speed, promote measurement accuracy, but when telescopic cylinder 17's output contracts completely, wind speed sensor 4 is located telescopic cylinder 17 cylinder body's lower extreme, if want to make wind speed sensor 4 be located the top in tunnel, need set up a cavity at the top in tunnel, also telescopic cavity 16, the space occupation has been increased, and need improve the tunnel structure, there is certain potential safety hazard, the implementation degree of difficulty has been increased.
In view of the above, the present embodiment further provides another arrangement manner of the connecting rod 5, in which, as shown in fig. 5, the connecting rod 5 includes a base rod 12 and a sliding sleeve 13, the rotating shaft 9 is arranged at the top end of the base rod 12, the lower end of the base rod 12 is connected with a sliding rod 14, the lower end of the sliding rod 14 is inserted into the sliding sleeve 13, a return spring 15 is connected between the sliding sleeve 13 and the base rod 12, the return spring 15 is sleeved outside the sliding rod 14, the top of the roadway is provided with a limit seat 8, by this arrangement, when the connecting rod 5 is horizontal, the return spring 15 is in a loose state, the wind speed sensor 4 is located at a midpoint of the top of the roadway section, and can measure the wind speed on the top of the roadway, and when the connecting rod 5 is in contact with the limit seat 8, the sliding sleeve 13 slides down to the center of the roadway section under the combined action of gravity and, therefore, the wind speed measurement of the central point of the section of the roadway is realized, the wind speed fluctuation condition can be monitored on the top surface, the average wind speed is measured at the central position of the section of the roadway, the measurement error of the average wind speed is favorably reduced, and the measurement precision is improved.
In the above description, the connecting rod 5 is through setting up reset spring 15, under the prerequisite that does not need extra drive unit, realized the accurate control to the wind speed sensor 4 position, make its initial position be located the mid point department at tunnel section top, the final position is located the sectional centre point department of tunnel, generally, on the section in tunnel, the wind speed of centre point position is higher, and the wind speed of side is lower, in this embodiment, carry out the monitoring of wind speed fluctuation in the position of lower wind speed, carry out the wind speed monitoring in the higher position of wind speed, thereby can reduce the measuring error of average wind speed, promote measurement accuracy.
In this connecting rod 5's the mode of setting up, can realize equally monitoring the undulant condition of wind speed at the top surface, put at tunnel section central point and survey average wind speed to reduce the measuring error of average wind speed, promote measurement accuracy, can also reduce the space and occupy, and less to the transformation in tunnel, only need install additional in the tunnel, do not relate to the transformation in tunnel itself, consequently implement the degree of difficulty lower.
It should be noted that, as shown in fig. 6, the embodiment of the present invention is also used for measuring and controlling the average wind speed of the main wind turbine, when measuring and controlling the wind speed of the main wind turbine, the wind speed measuring system 1 is installed at a position L away from the main wind turbine, and since there is no vehicle or person coming and going before and after the main wind turbine, the object motion monitoring system 2 is not needed, and the measurement and control of the average wind speed of the main wind turbine can be realized by the wind speed measuring system 1.
The mine tunnel average wind speed single-point measurement and control device in the embodiment can monitor transportation equipment and personnel in a tunnel monitoring area, avoid the influence after mining operation and tunnel pass, ensure that the measured average wind speed is not interfered by temporary factors, effectively improve the detection accuracy, and can adjust a fan according to the wind speed in the tunnel, control the wind speed in the tunnel to meet the production requirement, measure wind speed sensor 4 simultaneously and can swing to the section center of the tunnel by the sectional top midpoint of the tunnel, realize multi-point measurement, improve the measurement accuracy, and can realize monitoring the fluctuation condition of the wind speed at the top surface, measure the average wind speed at the sectional center position of the tunnel, and is favorable for reducing the measurement error of the average wind speed.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A single-point measurement and control method for average wind speed of mine roadways is characterized by comprising the following steps:
s100, determining a measurement and control point in a roadway, and constructing a wind speed measurement system at the measurement and control point;
s200, setting the front area and the rear area of the measurement and control point as measurement and control areas, and judging whether the current state of the measurement and control areas is suitable for measuring the wind speed;
s300, operating a wind speed measuring system according to a judgment result to measure the single-point wind speed;
s400, converting the single-point wind speed measurement result into an average wind speed;
s500, comparing the measured average wind speed with the average wind speed set by the system, and if the average wind speed is within the allowable range, not adjusting the air volume of the fan; if the wind speed is not within the allowable range of the average wind speed, the adjusting signal is transmitted to a fan control system to adjust the air quantity of the fan.
2. The single-point measurement and control method for the average wind speed of the mine laneway according to claim 1, wherein the specific process for judging the current state comprises the following steps:
s201, installing object motion monitoring sensors at the front end and the rear end of the measurement and control point to construct an object motion monitoring system;
s202, monitoring whether an object passes through the measurement and control area or not through the motion monitoring system;
and S203, judging the monitoring result, if no object passes through the monitoring result, indicating that the wind speed can be measured in the current state, otherwise, not measuring the wind speed.
3. The single-point measurement and control device for the average wind speed of the mine roadway according to claim 1, wherein the wind speed measurement system comprises a wind speed sensor and a connecting rod, the wind speed sensor is connected with the connecting rod, the connecting rod is a swing type connecting rod, and the connecting rod is fixed in the roadway.
4. The single-point measurement and control device for the average wind speed of the mine laneway, according to claim 3, is characterized in that the specific process of measuring the single-point wind speed comprises the following steps:
s301, the wind speed sensor is fixed on the top surface of the roadway through the connecting rod, and the single-point wind speed of the top surface of the roadway is monitored to obtain the single-point wind speed of the top surface;
s302, analyzing the top surface single-point wind speed to obtain a top surface wind speed fluctuation value;
s303, comparing the top surface wind speed fluctuation value with a preset stirring range, and when the top surface wind speed fluctuation value exceeds the preset fluctuation range, the connecting rod acts to change the position of the wind speed sensor to the middle of the section of the roadway so as to measure the wind speed of the central point of the section of the roadway.
5. The single-point measurement and control device for the average wind speed of the mine roadway is characterized by comprising a wind speed measuring system (1) for measuring the wind speed in the roadway and an object motion detecting system (2) for measuring whether an object passes through a detection area or not, wherein the object motion detecting system (2) is connected with the wind speed measuring system (1), and the wind speed measuring system (1) is connected with a fan control system (3) in the roadway;
wind speed survey system (1) include air velocity transducer (4) and connecting rod (5), air velocity transducer (4) are passed through connecting rod (5) are installed on the tunnel top surface, air velocity transducer (4) include wind speed probe (6) and signal processor (7), wind speed probe (6) will detect the signal output who obtains and give signal processor (7), signal processor (7) convert analog signal into digital signal through AD conversion to convert into single-point wind speed, convert into the average wind speed in the tunnel based on single-point wind speed again, signal processor (7) transmit fan control system (3) in the tunnel with average wind speed signal to realize the wind speed and adjust.
6. The single-point measurement and control device for the average wind speed of the mine roadway according to claim 5, wherein the object motion monitoring system (2) comprises two object motion monitoring sensors, the two object motion monitoring sensors are respectively installed on the front side and the rear side of the wind speed sensor (4) and are installed on the top surface of the roadway at a distance of more than 10 meters from the wind speed sensor (4), and the object motion monitoring sensors transmit signals to the signal processor (7) to determine whether the wind speed monitoring can be performed under the current state.
7. The single-point measurement and control device for the average wind speed of the mine roadway according to claim 5, wherein the connecting rod (5) is a swing type connecting rod, a rotating shaft (9) is vertically connected to the top end of the connecting rod (5), the rotating shaft (9) is fixed to the top surface of the roadway through a support (10), the bottom end of the connecting rod (5) is connected with the wind speed sensor (4), the rotating shaft (9) is rotatably arranged on the support (10) in a penetrating mode, a swing motor (11) is arranged on the support (10), an output shaft of the swing motor (11) is connected with the rotating shaft (9), and the swing motor (11) works to change the position of the wind speed sensor (4) so as to measure the wind speed of a single point or multiple points in a swing angle.
8. The single-point measurement and control device for the average wind speed of the mine roadway according to claim 7, wherein the connecting rod (5) comprises a telescopic cavity (16) arranged at the middle point of the top of the roadway, the telescopic cavity (16) is vertically arranged and is internally provided with a telescopic cylinder (17), the output end of the telescopic cylinder (17) is vertically downward and is connected with a telescopic rod (18), the wind speed sensor (4) is installed at the lower end of the telescopic rod (18), when the output end of the telescopic cylinder (17) is completely contracted, the wind speed sensor (4) is located at the middle point of the top of the roadway section, and when the output end of the telescopic cylinder (17) is completely extended, the wind speed sensor (4) is located at the center of the roadway section.
9. The mine roadway average wind speed single-point measurement and control device according to claim 7, wherein the connecting rod (5) comprises a base rod (12) and a sliding sleeve (13), the rotating shaft (9) is arranged at the top end of the base rod (12), the lower end of the base rod (12) is connected with the sliding rod (14), the lower end of the sliding rod (14) is inserted into the sliding sleeve (13), a return spring (15) is connected between the sliding sleeve (13) and the base rod (12), the return spring (15) is sleeved outside the sliding rod (14), the roadway top is provided with a limiting seat (8), when the connecting rod (5) is horizontal, the return spring (15) is in a loose state, the wind speed sensor (4) is located at the middle point of the top of the roadway section, and when the connecting rod (5) is in contact with the limiting seat (8), the sliding sleeve (13) slides downwards to the center of the roadway section under the combined action of gravity and the return spring (15).
10. The single-point measurement and control device for the average wind speed of mine roadways according to claim 5, characterized in that the wind speed probe (6) is a thermo-sphere type, impeller type or ultrasonic type wind speed sensor, and the object motion monitoring sensor is an active infrared motion sensor.
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