CN113642270A - Method and device for measuring airflow of roadway, terminal equipment and storage medium - Google Patents
Method and device for measuring airflow of roadway, terminal equipment and storage medium Download PDFInfo
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Abstract
The embodiment of the application is suitable for the technical field of mine ventilation, and provides a method and a device for measuring the wind flow of a roadway, terminal equipment and a storage medium, wherein the method comprises the following steps: determining a section for measuring wind current in the roadway, wherein the section has a corresponding section structure; determining a moving route for measuring wind current according to the section structure; the moving route is the route of the measuring equipment when moving at the cross section; acquiring a plurality of measurement values acquired when the measuring equipment moves on a moving route; and calculating the wind flow value of the tunnel according to the plurality of measured values. By adopting the method, the accuracy of the wind speed of the roadway measured by the terminal equipment can be improved.
Description
Technical Field
The application belongs to the technical field of mine ventilation, and particularly relates to a method and a device for measuring wind flow of a roadway, terminal equipment and a storage medium.
Background
In a mine, an inlet and an outlet of a roadway are generally provided with an air door respectively, so that stable ventilation in the mine is ensured, and air flow can move in the mine according to a specified route.
As large fresh air flows are often required in mines to ensure that adequate fresh air can be supplied to downhole personnel. Therefore, there is typically a significant amount of wind flow required to enter and exit the roadway. However, when the wind speed and the wind pressure are too high, the damper is deformed to some extent. Therefore, in order to provide sufficient strength to the air door and prevent deformation during ventilation, the door body material of the air door needs to be resistant to the wind speed of the wind flow during ventilation.
In the prior art, the wind speeds of an inlet and an outlet in a tunnel are usually measured for many times during ventilation, and the influence of the actual structure of the tunnel on the wind speed is not considered, so that the accuracy of the measured wind speed is lower.
Disclosure of Invention
The embodiment of the application provides a roadway wind flow measuring method, a roadway wind flow measuring device, terminal equipment and a storage medium, and can solve the problem that in the prior art, the accuracy of measured roadway wind speed is low.
In a first aspect, an embodiment of the present application provides a method for measuring an airflow of a roadway, where the method includes:
determining a section for measuring wind current in the roadway, wherein the section has a corresponding section structure;
determining a moving route for measuring wind current according to the section structure; the moving route is the route of the measuring equipment when moving at the cross section;
acquiring a plurality of measurement values acquired when the measuring equipment moves on a moving route;
and calculating the wind flow value of the tunnel according to the plurality of measured values.
In one embodiment, determining a section in a roadway for measuring wind flow comprises:
constructing a simulation tunnel which has the same structure, direction and equipment as the tunnel;
identifying a target simulation roadway which does not influence the air flow change in the simulation roadway based on the structure, the trend and the equipment of the simulation roadway;
and determining the section at the center position of the target simulation roadway as a section.
In one embodiment, determining a moving path for measuring wind current according to a profile structure includes:
determining whether the section structure belongs to one of a plurality of preset regular structures;
if the section structure belongs to one of a plurality of preset regular structures, taking a moving route of the regular structure corresponding to the section structure as a moving route for measuring the wind current;
if the section structure does not belong to one of a plurality of preset regular structures, a plurality of measuring points for measuring the wind flow are randomly determined from the section, and a moving route is generated based on the plurality of measuring points.
In an embodiment, the plurality of measurements includes at least a wind speed value;
calculating a wind flow value of the roadway according to the plurality of measured values, including:
calculating an average value of a plurality of wind speed values;
and correcting the average value based on the section structure to obtain the wind flow value of the roadway.
In one embodiment, the average value is corrected based on the section structure to obtain the wind flow value of the roadway, including;
calculating the section area of the section based on the section structure;
calculating a correction coefficient for correcting the average value according to the area of the section;
and calculating the product between the correction coefficient and the average value, and taking the product as the air flow value of the roadway.
In one embodiment, the correction factor is calculated using the following equation:
the method comprises the following steps of acquiring a plurality of measurement values on a moving route by using a measurement device, wherein K is a correction coefficient, S is the section area of a section, and A is an influence value on the section area of the section when the measurement device is used by a worker to acquire the plurality of measurement values on the moving route.
In one embodiment, the method further comprises the steps of correcting the average value based on the section structure to obtain an air flow value of the roadway;
s1, continuously calculating a plurality of wind flow values, wherein any one wind flow value is calculated and obtained based on a plurality of measured values acquired when the measuring equipment moves on the moving route once;
s2, calculating the average value of a plurality of wind flow values;
s3, respectively calculating the relative error between each wind flow value and the average value of a plurality of wind flow values;
s4, if the relative errors are smaller than the preset errors, taking the average value of the multiple wind flow values as the final wind flow value of the roadway;
s5, if any relative error is larger than or equal to the preset error, executing the steps S1-S4 again until the relative errors are smaller than the preset error.
In a second aspect, an embodiment of the present application provides an airflow measuring device for a roadway, the device including:
the section determining module is used for determining a section for measuring wind current in the roadway, and the section has a corresponding section structure;
the route determining module is used for determining a moving route for measuring the wind current according to the section structure; the moving route is the route of the measuring equipment when moving at the cross section;
the measurement value acquisition module is used for acquiring a plurality of measurement values acquired when the measurement equipment moves on a moving route;
and the wind flow value calculating module is used for calculating the wind flow value of the roadway according to the plurality of measured values.
In a third aspect, an embodiment of the present application provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the method according to any one of the first aspect is implemented.
In a fourth aspect, the present application provides a computer-readable storage medium, in which a computer program is stored, where the computer program is implemented, when executed by a processor, to implement the method according to any one of the above first aspects.
In a fifth aspect, the present application provides a computer program product, which when run on a terminal device, causes the terminal device to execute the method of any one of the above first aspects.
Compared with the prior art, the embodiment of the application has the advantages that: the section for measuring the wind current in the tunnel is used for determining the moving route of the wind current for measuring the section, so that a plurality of measured values measured by the measuring equipment when moving along the moving route can accurately represent the wind current passing through the section. Then, the terminal device may calculate a wind flow value at the section according to the plurality of measurement values, and determine the wind flow value of the section as the wind flow value of the roadway based on the consistency of the section structure of the roadway. Therefore, when the measuring equipment measures the wind flow value of the cross section, the influence of the actual structure of the roadway on the wind speed is considered, and the accuracy of measuring the wind flow is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart illustrating an implementation of a method for measuring airflow of a roadway according to an embodiment of the present application;
fig. 2 is a schematic view of an application scenario of a moving route in a method for measuring wind flow of a roadway according to an embodiment of the present application;
fig. 3 is a schematic diagram of an implementation manner of S101 of a method for measuring wind flow of a roadway according to an embodiment of the present application;
fig. 4 is a schematic view of an implementation manner of S101 of a method for measuring wind flow of a roadway according to an embodiment of the present application;
fig. 5 is a schematic view of an implementation manner of S104 of a method for measuring wind flow of a roadway according to an embodiment of the present application;
fig. 6 is a schematic diagram illustrating an implementation manner of S1042 of a method for measuring wind flow of a roadway according to an embodiment of the present application;
fig. 7 is a schematic view of an implementation manner of S104 of a method for measuring wind flow of a roadway according to another embodiment of the present application;
fig. 8 is a schematic structural diagram of an air flow measuring device for a roadway according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
The method for measuring airflow of a roadway provided by the embodiment of the application can be applied to terminal devices such as a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), and the like, and the embodiment of the application does not limit the specific types of the terminal devices at all.
Referring to fig. 1, fig. 1 shows a flowchart of an implementation of a method for measuring an airflow of a roadway according to an embodiment of the present application, where the method includes the following steps:
s101, the terminal equipment determines a section used for measuring wind current in the roadway, and the section has a corresponding section structure.
In one embodiment, the roadway is a roadway in a mine for workers to enter and exit the mine, and the roadway can also be used for fresh air to enter and exit so as to provide fresh air for the workers in the mine. The roadway includes, but is not limited to, an upright roadway, a horizontal roadway, and an inclined roadway.
In an embodiment, the cross section is a longitudinal section of the roadway in the vertical direction, and the roadway is usually longer in length, so the cross section of the roadway may be a longitudinal section of any position in the roadway. In general, in the prior art, the plane of the entrance and exit of the tunnel is used as the section of the tunnel. The section structure of the roadway comprises various regular structures including but not limited to arch, trapezoid, rectangle and the like. However, since some devices, such as ventilation devices, pipeline devices and the like, may exist in the tunnel, the cross-sectional structure of the tunnel is irregular. Therefore, in this embodiment, the section structure of the tunnel is not limited.
In an embodiment, after the section is determined, a worker may hold a measuring device to measure the wind flow passing through the section, so as to obtain a wind flow value of the roadway.
In an embodiment, when a roadway is excavated in a mine, a section structure of the roadway, a heading direction of the roadway, a length distance of the roadway, equipment and the like are usually designed in advance on terminal equipment. Namely, a model of the roadway is designed in advance on the terminal equipment to generate a simulation roadway. Thus, the terminal device may determine a section of the roadway that is available for measuring wind flow based on the simulated roadway. The actual excavated roadway is excavated by referring to the simulation roadway, so that the actual excavated roadway can be considered to have the same structure, direction and equipment as the simulation roadway.
It is added that, because the inlet and outlet of the tunnel usually have large variation of wind flow, the measured wind flow value may not be stable. Therefore, in order to further bring the measured wind flow value closer to the actual wind flow value through the roadway, when determining the section of the roadway, the section may be any interface in the roadway that is not at the access. Specifically, the cross section may be a section located at a distance from the center of the roadway, which is not limited.
S102, the terminal equipment determines a moving route for measuring the wind current according to the section structure; the movement path is a path when the measuring device moves at the cross section.
In an embodiment, the moving path is a path of the measuring device moving at the cross section. Generally, for a plurality of regular sections, a worker can design a moving route for each regular section in advance and perform association. Then, the terminal device may store the association relationship and the movement route.
It should be noted that the cross section is a planar structure, and therefore, when the measuring device is moved along the movement path, the measuring device needs to reach as many positions of the cross section as possible. That is, the measurement value measured by the measuring device while the moving route is moving should be roughly representative of the value of the wind flow on the remaining non-moving route in the cross section. Therefore, when the measured value of the wind current passing through the cross section is accurately obtained, the times that the measuring equipment needs to move for multiple times at the cross section can be reduced.
Specifically, referring to fig. 2, the cross-sectional structure may be a trapezoidal structure, which may form a moving path by a nine-point method, and measure the wind flow passing through the cross-section. The arrow in fig. 2 is only one moving direction generated by the measuring device according to the measuring point, and the measuring device can also move along the moving route in the direction opposite to the arrow in fig. 2. That is, the measuring device may also first move to the left with the first point in the lower right corner of fig. 2 as a starting point until the first point in the upper left corner of fig. 2 is reached. Based on this, in the present embodiment, the direction in which the measuring device moves based on the generated movement route is not limited.
In one embodiment, the measuring device includes, but is not limited to, a differential pressure gauge, an anemometer, and the like, which may be used to measure different measurements of wind flow. Specifically, the pressure of the wind flowing through the section can be measured by a differential pressure gauge, or the wind speed of the wind flowing through the section can be measured by an anemometer.
S103, the terminal equipment obtains a plurality of measured values collected when the measuring equipment moves on the moving route.
In one embodiment, the above S102 illustrates that the measuring device can measure different measured values of the wind flow while moving on the moving route. This will not be described in detail. It should be noted that a plurality of measurement values are usually acquired when the measuring device moves once on the movement path. Specifically, referring to fig. 2, it can be considered that the measuring device can collect 9 measured values to participate in the subsequent processing when moving once on the moving route.
In one embodiment, for a plurality of collected measurement values, the measurement device may transmit the plurality of measurement values to the terminal device, so that the terminal device obtains the corresponding measurement values.
In one embodiment, when the measuring device collects the measured value of the wind flow, the measurement should be performed under the condition that the roadway ventilation is stable, so that the measuring device can accurately measure the wind flow value when the wind flow passes through the section. That is, when the roadway is in a condition where ventilation has just started, or will end, its measurements of wind flow may be inaccurate.
In one embodiment, the measuring device should move at a constant speed when moving on the moving route, and the time of moving once on the moving route should be within a predetermined time. Wherein, make measuring equipment uniform velocity move's purpose lie in: the change of the wind flow at the section caused by the movement of the measuring equipment can be avoided. In addition, the purpose of walking the moving route once in a preset time is as follows: when the roadway is in a stable ventilation condition, the wind flow passing through the cross section within a preset time is not changed generally. The predetermined time may be set by a worker according to an actual situation, and is not limited thereto.
And S104, the terminal equipment calculates the air flow value of the roadway according to the plurality of measured values.
In one embodiment, the measuring devices are of a plurality, each measuring device being capable of measuring a type of wind flow value. Based on this, the calculated wind flow value may be a wind speed value or a wind pressure value, which is not limited to this. The above-described airflow value is an airflow value of a cross section, but the cross-sectional structure of the tunnel is generally uniform, and therefore, the airflow value of a cross section at any position of the tunnel may be determined as the airflow value of the tunnel, which is not limited thereto.
In an embodiment, after obtaining the plurality of measurement values, the terminal device may calculate an average value between the plurality of measurement values as the wind flow value of the roadway. It should be noted that the one wind flow value is a value obtained by measuring and processing the wind flow passing through the cross section when the measuring device moves once on the moving route. Therefore, if the wind flow value of the cross section needs to be measured for a plurality of times, the steps S103 and S104 are executed for a plurality of times. And then, taking the average value of the wind flow values measured for multiple times as a final wind flow value.
In other embodiments, the terminal device may further determine, for the plurality of measured values, the maximum value of the plurality of measured values as the final wind flow value, since it is necessary to install a damper for the tunnel. Therefore, the air door can be manufactured by selecting a proper door body material by workers according to the maximum air flow value.
In the embodiment, the section for measuring the wind flow in the roadway is used for determining the moving route of the wind flow of the measured section, so that a plurality of measured values measured by the measuring equipment when moving along the moving route can accurately represent the wind flow passing through the section. Then, the terminal device may calculate a wind flow value at the section according to the plurality of measurement values, and determine the wind flow value of the section as the wind flow value of the roadway based on the consistency of the section structure of the roadway. Therefore, when the measuring equipment measures the wind flow value of the cross section, the influence of the actual structure of the roadway on the wind speed is considered, and the accuracy of measuring the wind flow is improved.
In an embodiment, referring to fig. 3, in the step S101 of determining a section for measuring wind flow in the roadway, the following sub-steps S1011 to S1012 are specifically included, which are detailed as follows:
and S1011, the terminal equipment constructs a simulation tunnel which has the same structure, direction and equipment as the tunnel.
In an embodiment, the simulation lane and the lane have the same structure, direction and equipment as described in the above S101, which will not be described again.
And S1012, identifying a target simulation roadway which does not influence the wind flow change in the simulation roadway by the terminal equipment based on the structure, the trend and the equipment of the simulation roadway.
And S1013, the terminal equipment determines the cross section at the center position of the target simulation roadway as the cross section.
In an embodiment, the roadway typically has obstruction structures, obstruction devices, or turns in the roadway that affect the divergence of the wind flow. On the basis of this, if the obstacle structure, obstacle device or course is present in the vicinity of the cross section, the wind flow value measured by the measuring device at the cross section will be influenced to a certain extent.
Therefore, in order to make the measured wind flow value closer to the actual wind flow value passing through the tunnel, when the terminal device determines the section for measuring the wind flow from the tunnel, it should be ensured that no obstacle structure, obstacle device and trend influencing the wind flow operation exist in the space of the tunnel in each preset range before and after the section. The preset range can be set by a worker according to actual conditions, and is not limited. Because of the simulation tunnel and the tunnel have the same structure, after the terminal equipment determines the section from the target simulation tunnel, the staff can determine the corresponding section from the actual tunnel based on the section in the target simulation tunnel.
Based on the method, the terminal equipment can identify a target simulation roadway which does not influence the wind flow change from the simulation roadway based on the structure, equipment and trend of the simulation roadway. It is understood that any cross section in the target simulation roadway should be taken as a cross section. However, in the present embodiment, in order to further avoid the wind current from being affected by the above-mentioned obstacle structure, obstacle device or trend in the roadway, the terminal device may use the interface at the center position of the target simulation roadway as a cross section to measure the wind current value.
In an embodiment, referring to fig. 4, in the step S102 of determining the moving route for measuring the wind flow according to the cross-sectional structure, the following sub-steps S1021 to S1023 are specifically included, which are detailed as follows:
and S1021, the terminal equipment determines whether the section structure belongs to one of a plurality of preset regular structures.
In an embodiment, in S101, the cross-sectional structure has a regular structure and an irregular structure, and the regular structure is explained, which is not described again. In this embodiment, since the section of the tunnel belongs to a plane, the terminal device may compare the similarity between the section and a plurality of planes with a preset regular structure after acquiring the section. If the similarity between the plane with any regular structure and the cross section is greater than the preset similarity, the cross section structure of the cross section is considered to belong to the corresponding regular structure (the corresponding regular structure is greater than the preset similarity).
And S1022, if the cross-section structure belongs to one of a plurality of preset regular structures, the terminal device takes the moving route of the regular structure corresponding to the cross-section structure as the moving route for measuring the wind current.
In one embodiment, the above S102 has already explained that for a plurality of regular sections, the worker can design a moving route for each regular section in advance, and associate and store the moving route. Based on this, after determining the cross-sectional structure, the terminal device may determine the corresponding moving route directly from the stored multiple moving routes based on the association relationship, which is not described in detail.
It should be noted that, although the cross section corresponding to the cross-sectional structure is similar to the shape and structure of the plane corresponding to the regular structure, the area sizes may not be the same. Therefore, the terminal device can calculate the ratio of the area of the cross section to the area of the plane corresponding to the regular structure. And then, the worker can correspondingly zoom the moving route on the plane corresponding to the regular structure to the cross section according to the ratio so as to obtain the moving route of the measuring equipment when the measuring equipment moves at the cross section.
And S1023, if the section structure does not belong to one of a plurality of preset regular structures, the terminal equipment randomly determines a plurality of measuring points for measuring the wind flow from the section, and generates a moving route based on the plurality of measuring points.
In one embodiment, if the cross-section structure is an irregular structure, the terminal device may randomly determine a plurality of measurement points for measuring the wind flow from the cross-section. Then, the terminal device can connect the plurality of measuring points based on a mode from left to right and from top to bottom to obtain a moving route corresponding to the cross section of the irregular structure. In the embodiment, a plurality of measuring points are determined from the cross section in a random mode, so that the influence of artificial subjective factors can be avoided, and the measured value measured by a worker based on the moving route is closer to the actual value of the wind flow.
In an embodiment, referring to FIG. 5, the plurality of measurements includes at least a wind speed value; in the step S104 of calculating the wind flow value of the roadway according to the plurality of measured values, the following substeps S1041-S1042 are specifically included, which are detailed as follows:
s1041, the terminal device calculates an average value of the plurality of wind speed values.
In an embodiment, it has been described in the above S104 that after obtaining the plurality of measurement values, the terminal device may calculate an average value between the plurality of measurement values as the wind flow value of the roadway. Thus, if the measuring device is an anemometer, a plurality of measured values all belong to the wind speed value.
If it is necessary to determine the maximum wind speed value when the wind current passes through the cross section, the maximum value of the plurality of wind speed values should be set as the maximum wind speed value. However, the wind current does not usually pass through the cross section at the maximum wind speed for a long time, so in this embodiment, the terminal device may only calculate the average value of the plurality of wind speed values. Therefore, when the door body material of the air door can sufficiently resist the wind speed of wind current during ventilation, the manufacturing cost of the air door can be lower after the selected door body material is used for manufacturing the air door.
And S1042, the terminal equipment corrects the average value based on the section structure to obtain the wind flow value of the roadway.
In one embodiment, the wind speed value is measured by a worker holding a measuring device in the actual measurement. Therefore, in practical situations, in the space of the roadway in each preset range before and after the section, the staff holding the measuring equipment may affect the operation of the wind current. Based on this, in order to make the last measured average value closer to the actual value of the wind flow at the section, the terminal device needs to correct the average value to obtain an accurate wind flow value.
Specifically, referring to fig. 6, in S1042, the terminal device corrects the average value based on the section structure to obtain the wind flow value of the roadway, the following substeps S1421-S1423 are specifically included, which are detailed as follows:
s1421, the terminal device calculates the cross-sectional area of the cross section based on the cross-sectional structure.
In an embodiment, the cross-sectional area of the cross-section is calculated based on the cross-sectional structure, and specifically, if the cross-sectional structure is a regular structure, for example, a trapezoid structure, a rectangle structure, or the like, the calculation may be directly performed based on a corresponding area calculation formula (a trapezoid area calculation formula or a rectangle area calculation formula). If the cross section structure is an irregular structure, the cross section can be processed, and the cross section is divided into a plurality of planes with regular structures for calculation. Wherein, the mode of carrying out area calculation to the section of irregular structure still can adopt: the calculation is performed by a multipoint method, an average method (processing the height and width of a cross section as an average value), a parabolic method, a radial method, a roller method, or the like. In the present embodiment, no limitation is imposed on the calculation method for calculating the area of the irregular plane.
And S1422, the terminal device calculates a correction coefficient for correcting the average value according to the cross-sectional area.
And S1423, the terminal device calculates a product between the correction coefficient and the average value, and the product is used as a wind flow value of the roadway.
In one embodiment, after the area of the cross section is calculated, the staff themselves occupy a certain roadway space, which does not occupy the area of the cross section, but affects the operation of the wind flow passing through the cross section. For example, it will cause the flow of wind passing over the cross-section to diverge. On the basis, the terminal equipment also needs to consider the influence of workers on the wind flow. Namely, the average value is corrected by adopting a correction coefficient so as to obtain a corrected wind flow value. Wherein, the terminal device can calculate the correction coefficient based on the following formula:
the method comprises the following steps of acquiring a plurality of measurement values on a moving route, wherein K is a correction coefficient, S is the section area of a section, and A is an influence value on the section area of the section when the measurement devices are used for acquiring the plurality of measurement values on the moving route.
In a specific embodiment, the value a may be a fixed value, or may be set by an operator according to the actual height and weight of the operator, which is not limited herein. In this embodiment, the value a may be specifically 0.4. It should be noted that when the staff holds the measuring device to measure the wind current at the cross section, the staff should stand on their side to further reduce the influence on the wind current operation at the cross section.
In an embodiment, referring to fig. 7, after S1042 corrects the average value based on the section structure to obtain the wind flow value of the roadway, the following steps S1043 to S1047 are further included, which are detailed as follows:
and S1043, continuously calculating a plurality of wind flow values by the terminal device, wherein any one wind flow value is calculated based on a plurality of measurement values acquired when the measuring device moves on the moving route once.
And S1044, calculating the average value of the plurality of wind flow values.
In an embodiment, a plurality of measurement values may be acquired when the measuring device moves once on the movement path. Then, the processing of S103, S1041 and S1042 is performed on the multiple measurement values acquired each time, so as to obtain wind flow values each time correspondingly. That is, any one of the wind flow values is calculated based on a plurality of measurement values acquired when the measurement device moves once on the moving route. Then, for each wind flow value, the terminal device calculates an average value of all the wind flow values.
And S1045, the terminal device calculates relative errors between each wind flow value and the average value of the wind flow values respectively.
In an embodiment, the relative error of any of the wind flow values may be: and subtracting the average value from the wind flow value to obtain an absolute error, and dividing the absolute error by the average value to obtain a numerical value to be determined as a relative error. When the relative error is a negative number, an absolute value is added thereto so as to be a positive number.
In other examples, the relative error of any of the wind flow values may also be: the wind flow value is subtracted from the average value to obtain an absolute error, and then a numerical value obtained by dividing the absolute error by the measuring range of the testing equipment is determined as a relative error. Similarly, if the relative error is negative, the absolute value is added thereto so as to be positive.
In this embodiment, the average value is used to calculate the relative error, so that the finally obtained relative error can better reflect the fluctuation of the wind flow when the measuring equipment moves at the section. That is, the terminal device may determine whether the wind flow flowing through the fracture surface in the tunnel is stable when the tunnel is ventilated, based on the relative error.
And S1046, if the relative errors are smaller than the preset error, the terminal equipment takes the average value of the multiple airflow values as the final airflow value of the roadway.
And S1047, if any relative error is larger than or equal to the preset error, the terminal device executes the steps S1043-S1047 again until the relative errors are smaller than the preset error.
In an embodiment, the preset error may be set by a worker according to an actual situation, which is not limited. And if the relative errors are smaller than the preset errors, the wind flow is in a stable state when the measuring equipment measures the wind flow at the section. Then, the terminal device may use an average value of the plurality of wind flow values as a final wind flow value of the tunnel. Based on this, it can be understood that when any relative error is greater than or equal to the preset error, it indicates that the wind flow is in an unstable state when the measuring device measures the wind flow at the cross section. Therefore, the terminal device needs to continuously obtain the airflow value for multiple times again, and execute the steps S1043 to S1047 again until the relative errors are all smaller than the preset error.
Referring to fig. 8, fig. 8 is a block diagram of a structure of an airflow measuring device for a roadway according to an embodiment of the present application. The wind flow measuring device of the roadway in this embodiment includes modules for executing the steps in the embodiments corresponding to fig. 1, 3 to 7. Please refer to fig. 1, fig. 3 to fig. 7 and the related descriptions in the embodiments corresponding to fig. 1, fig. 3 to fig. 7. For convenience of explanation, only the portions related to the present embodiment are shown. Referring to fig. 8, the wind flow measuring device 800 of the tunnel includes: a section determination module 810, a route determination module 820, a measurement value acquisition module 830, and a wind flow value calculation module 840, wherein:
and the section determining module 810 is used for determining a section for measuring the wind current in the roadway, and the section has a corresponding section structure.
A route determining module 820 for determining a moving route for measuring wind current according to the cross-sectional structure; the movement path is a path when the measuring device moves at the cross section.
The measurement value obtaining module 830 is configured to obtain a plurality of measurement values collected when the measurement device moves on the moving route.
And the wind flow value calculating module 840 is used for calculating the wind flow value of the roadway according to the plurality of measured values.
In one embodiment, the profile determination module 810 is further configured to:
constructing a simulation tunnel which has the same structure, direction and equipment as the tunnel; identifying a target simulation roadway which does not influence the air flow change in the simulation roadway based on the structure, the trend and the equipment of the simulation roadway; and determining the section at the center position of the target simulation roadway as a section.
In one embodiment, the route determination module 820 is further configured to:
determining whether the section structure belongs to one of a plurality of preset regular structures; if the section structure belongs to one of a plurality of preset regular structures, taking a moving route of the regular structure corresponding to the section structure as a moving route for measuring the wind current; if the section structure does not belong to one of a plurality of preset regular structures, a plurality of measuring points for measuring the wind flow are randomly determined from the section, and a moving route is generated based on the plurality of measuring points.
In an embodiment, the plurality of measurements includes at least a wind speed value; the wind flow value calculation module 840 is further configured to:
calculating an average value of a plurality of wind speed values; and correcting the average value based on the section structure to obtain the wind flow value of the roadway.
In an embodiment, the wind flow value calculation module 840 is further configured to:
calculating the section area of the section based on the section structure; calculating a correction coefficient for correcting the average value according to the area of the section; and calculating the product between the correction coefficient and the average value, and taking the product as the air flow value of the roadway.
In one embodiment, the wind flow value calculation module 840 calculates the correction factor using the following formula:
the method comprises the following steps of acquiring a plurality of measurement values on a moving route, wherein K is a correction coefficient, S is the section area of a section, and A is an influence value on the section area of the section when the measurement devices are used for acquiring the plurality of measurement values on the moving route.
In an embodiment, the wind flow measuring device 800 of the roadway further includes:
and the continuous calculation module is used for executing S1 and continuously calculating a plurality of wind flow values, and any one wind flow value is calculated based on a plurality of measured values acquired when the measuring equipment moves once on the moving route.
And the wind flow average value calculating module is used for executing S2 and calculating the average value of a plurality of wind flow values.
The error calculation module is used for executing S3 and respectively calculating the relative error between each wind flow value and the average value of the plurality of wind flow values.
And the first error judgment module is used for executing the S4 and taking the average value of the multiple wind flow values as the final wind flow value of the roadway if the relative errors are smaller than the preset error.
And the second error judgment module is used for executing the step S5, and if any relative error is greater than or equal to the preset error, executing the steps S1-S4 again until the relative errors are less than the preset error.
It should be understood that, in the structural block diagram of the wind flow measuring device of the roadway shown in fig. 8, each unit/module is used to execute each step in the embodiments corresponding to fig. 1 and fig. 3 to fig. 7, and each step in the embodiments corresponding to fig. 1 and fig. 3 to fig. 7 has been explained in detail in the above embodiments, and specific reference is made to the relevant description in the embodiments corresponding to fig. 1 and fig. 3 to fig. 7 and fig. 1 and fig. 3 to fig. 7, which is not repeated herein.
Fig. 9 is a block diagram of a terminal device according to another embodiment of the present application. As shown in fig. 9, the terminal apparatus 900 of this embodiment includes: a processor 910, a memory 920 and a computer program 930, such as a program of a method of wind flow measurement of a roadway, stored in the memory 920 and operable on the processor 910. The processor 910, when executing the computer program 930, implements the steps in the embodiments of the wind flow measuring method for each roadway, such as S101 to S104 shown in fig. 1. Alternatively, the processor 910, when executing the computer program 930, implements the functions of the modules in the embodiment corresponding to fig. 8, for example, the functions of the modules 810 to 840 shown in fig. 8, please refer to the related description in the embodiment corresponding to fig. 8.
Illustratively, the computer program 930 may be divided into one or more units, which are stored in the memory 920 and executed by the processor 910 to accomplish the present application. One or more elements may be a sequence of computer program instruction segments capable of performing certain functions, which are used to describe the execution of computer program 930 in terminal device 900.
The terminal device may include, but is not limited to, a processor 910, a memory 920. Those skilled in the art will appreciate that fig. 9 is merely an example of a terminal device 900 and is not intended to limit terminal device 900 and may include more or fewer components than those shown, or some of the components may be combined, or different components, e.g., the terminal device may also include input output devices, network access devices, buses, etc.
The processor 910 may be a central processing unit, but may also be other general purpose processors, digital signal processors, application specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 920 may be an internal storage unit of the terminal device 900, such as a hard disk or a memory of the terminal device 900. The memory 920 may also be an external storage device of the terminal device 900, such as a plug-in hard disk, a smart card, a flash memory card, etc. provided on the terminal device 900. Further, the memory 920 may also include both internal and external memory units of the terminal device 900.
The embodiment of the application provides a terminal device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein when the processor executes the computer program, the method for measuring the wind flow of the roadway in the above embodiments is realized.
In a fourth aspect, the present application provides a computer-readable storage medium, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the wind flow measurement method for the roadway in the above embodiments.
In a fifth aspect, the present application provides a computer program product, which when run on a terminal device, causes the terminal device to execute the wind flow measurement method of the roadway in the above embodiments.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A method for measuring the wind flow of a roadway is characterized by comprising the following steps:
determining a section for measuring wind current in a roadway, wherein the section has a corresponding section structure;
determining a moving route for measuring the wind current according to the section structure; the moving route is a route of the measuring equipment when moving at the cross section;
acquiring a plurality of measurement values acquired when the measuring equipment moves on the moving route;
and calculating the wind flow value of the roadway according to the plurality of measured values.
2. The method for measuring the wind flow in the roadway according to claim 1, wherein the determining the section for measuring the wind flow in the roadway comprises:
constructing a simulation tunnel which has the same structure, direction and equipment as the tunnel;
identifying a target simulation roadway which does not influence the wind flow change in the simulation roadway based on the structure, the trend and the equipment of the simulation roadway;
and determining the section at the center position of the target simulation roadway as the section.
3. The wind flow measuring method of the roadway according to claim 1 or 2, wherein determining a moving route for measuring the wind flow according to the section structure includes:
determining whether the section structure belongs to one of a plurality of preset regular structures;
if the cross-section structure belongs to one of a plurality of preset regular structures, taking a moving route of the regular structure corresponding to the cross-section structure as a moving route for measuring the wind current;
and if the section structure does not belong to one of a plurality of preset regular structures, randomly determining a plurality of measuring points for measuring the wind flow from the section, and generating the moving route based on the plurality of measuring points.
4. The method of measuring wind flow of a roadway of claim 3, wherein the plurality of measurements include at least a wind speed value;
the calculating the wind flow value of the roadway according to the plurality of measured values comprises:
calculating an average of the plurality of wind speed values;
and correcting the average value based on the section structure to obtain the wind flow value of the roadway.
5. The method for measuring the wind flow of the roadway according to claim 4, wherein the average value is corrected based on the section structure to obtain the wind flow value of the roadway, including;
calculating the section area of the section based on the section structure;
calculating a correction coefficient for correcting the average value according to the section area;
and calculating the product between the correction coefficient and the average value, and taking the product as the wind flow value of the roadway.
6. The method for measuring the wind flow of the roadway according to claim 5, wherein the correction coefficient is calculated by adopting the following formula:
the measuring device comprises a moving route, a measuring device, a correcting coefficient, a cross-section area and an influence value, wherein K is the correcting coefficient, S is the cross-section area of the cross section, and A is the influence value of the cross-section area of the cross section when the measuring device is used by a worker to collect the measured values on the moving route.
7. The method for measuring the wind flow of the roadway according to any one of claims 4 to 6, wherein the method further comprises the steps of correcting the average value based on the section structure to obtain a wind flow value of the roadway;
s1, continuously calculating a plurality of wind flow values, wherein any one wind flow value is calculated based on a plurality of measured values acquired when the measuring equipment moves on the moving route once;
s2, calculating an average value of the plurality of wind flow values;
s3, respectively calculating the relative error between each wind flow value and the average value of the plurality of wind flow values;
s4, if the relative errors are smaller than preset errors, taking the average value of the multiple wind flow values as the final wind flow value of the roadway;
s5, if any relative error is larger than or equal to the preset error, executing the steps S1-S4 again until the relative errors are smaller than the preset error.
8. An airflow measuring device for a roadway, comprising:
the section determining module is used for determining a section for measuring wind current in the roadway, and the section has a corresponding section structure;
the route determining module is used for determining a moving route for measuring the wind current according to the section structure; the moving route is a route of the measuring equipment when moving at the cross section;
the measurement value acquisition module is used for acquiring a plurality of measurement values acquired when the measurement equipment moves on the moving route;
and the wind flow value calculating module is used for calculating the wind flow value of the roadway according to the plurality of measured values.
9. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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