CN111879964A - Mining wind speed measuring device and measuring method thereof - Google Patents
Mining wind speed measuring device and measuring method thereof Download PDFInfo
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- CN111879964A CN111879964A CN202010891894.3A CN202010891894A CN111879964A CN 111879964 A CN111879964 A CN 111879964A CN 202010891894 A CN202010891894 A CN 202010891894A CN 111879964 A CN111879964 A CN 111879964A
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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
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
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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
- G01P1/00—Details of instruments
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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
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
- G01P21/025—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers for measuring speed of fluids; for measuring speed of bodies relative to fluids
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Abstract
The invention discloses a mining wind speed measuring device and a measuring method thereof. When measuring wind speed, this wind speed measuring device needs to use with the host computer instrument supporting. The working personnel adjust to a proper wind measuring height by adjusting the length of the telescopic rod, the wind speed sensor converts a gas flow signal into an electric signal, the electric signal is converted and processed by the circuit board, the other end of the data line is connected with a host instrument, and a wind speed value is displayed on a display screen of the host in real time; the measuring method provided by the invention measures the wind speed value for multiple times in a segmented manner through the accurate debugging of the potentiometer on the zero point reference of the wind speed, and improves the wind speed measuring precision.
Description
Technical Field
The invention belongs to the field of mine environment wind speed detection, and particularly relates to a mine wind speed measuring device and a measuring method thereof.
Background
In the operation of miners, the wind speed in the bottom hole environment needs to be monitored in real time, so that smooth air flow is ensured, and the personal safety of workers is ensured. Wind speed measuring devices on the market are mostly hand-held portable wind speed measuring instruments, and wind speed is measured according to mechanical fan type rotation. The wind speed measuring method has the following defects: firstly, when an instrument acquires data, a fan probe of the instrument must be placed against the wind, the wind direction change under a mine is complex, and the position needs to be frequently adjusted; secondly, under the severe environment of a mine, the height and the angle of the handheld instrument are limited. Third, the measurement device is susceptible to multi-wind interference, resulting in inaccurate wind speed measurements.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a mining wind speed measuring device and a measuring method thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
on one hand, the mining wind speed measuring device comprises a telescopic rod, a wind measuring part and a data wire, wherein the wind measuring part and the data wire are connected to the telescopic rod, the wind measuring part is provided with a wind speed sensor, a through cavity is formed in the telescopic rod, the data wire penetrates through the cavity and is connected with one end of a circuit board arranged in the telescopic rod, and the other end of the circuit board is electrically connected with the wind speed sensor.
Furthermore, the anemometry portion includes T type tee bend, air velocity transducer and third connector, and the end and the circuit board left end of third connector are fixed in the telescopic link through fastening screw, and the T type tee bend passes through fastening screw to be fixed in the front end of third connector.
Furthermore, an air speed sensor probe is arranged at the top end of the air speed sensor, and the tail end of the air speed sensor is connected with a third connector.
Further, the wind speed sensor probe is sheet-shaped.
Further, the telescopic link includes handheld portion and pars contractilis, handheld portion includes first connector and handheld pole.
Furthermore, one end of the data line enters the cavity of the telescopic rod from the tail end of the handheld part and is clamped through the first connecting head, and the other end of the data line is connected with the adapter plug.
Further, the telescopic part comprises a second connector, a circuit board and at least one telescopic structure.
Furthermore, the telescopic structure is that the rod section with the small front end diameter can retract into the rod section with the large rear end diameter, and meanwhile, the tail end diameter of the rod section with the small front end diameter is larger than the front end diameter of the rod section with the large rear end diameter.
Furthermore, a fixing ring and a gasket are arranged in the second connector, the connecting end of the circuit board and the data line is fixed on the second connector through the fixing ring, the gasket is sleeved on the data line, and the other end of the circuit board is fixed on the third connector through a fastening screw.
On the other hand, the measuring method based on the mining wind speed measuring device adopts the mining wind speed measuring device to measure, and comprises the following steps:
step 1: before starting the equipment, firstly adjusting an external stabilized voltage power supply of the wind speed sensor to 4V, and connecting the wind speed sensor with input ends of amplification modules U2A and U2B on a circuit board;
step 2: debugging a potentiometer PR1 on the circuit board by using a miniature screwdriver, connecting a red meter pen and a black meter pen of the digital multimeter to AOUT and GND on the circuit board, and adjusting the potentiometer to be based on 2.9V of a voltage display zero reference of the digital multimeter;
and step 3: connecting the adjusted wind speed sensor with the circuit board according to the original device, connecting the adapter plug with the main instrument, and starting up the wind speed sensor;
and 4, step 4: adjusting the telescopic rod to a proper measurement height to enable any end of two ends of the T-shaped tee joint to face the wind and stand, and enabling an included angle between the telescopic rod and the wind direction to be not more than 15 degrees;
and 5: at least 8 measuring points are uniformly distributed in the wind speed measuring range of a main instrument, the wind speed is increased gradually, the measurement is performed in sequence, after the wind speed is stable, an actual wind speed value and an indication value of the main instrument are measured at each measuring point, the measuring time is not less than 1min, each measuring point is measured for 2 times continuously, and the difference value of two adjacent measurements is a repeatability error: measuring for 3 times within the measuring time of each measuring point, and taking the average value;
step 6: and operating the main instrument to calculate, display and store the obtained data.
Compared with the prior art, the invention has the following beneficial effects: the mining wind speed measuring device is light in structure, convenient to carry and capable of being used by mine workers at any time. The height of the wind measuring part is adjusted through the telescopic rod with adjustable length, and the wind speed measuring device is used for measuring wind speeds at different heights under a mine.
The wind speed and the wind direction of wind in the T-shaped tee joint are relatively stable, the influence of the wind direction on the exposed wind speed sensor probe can be reduced, the measurement error is reduced, the speed of wind in different wind directions can be measured by changing the orientation of the T-shaped tee joint, and the underground wind speed value is displayed in real time.
According to the measuring method based on the mining wind speed measuring device, the wind speed value is measured for multiple times in a segmented manner through the accurate debugging of the potentiometer on the zero point reference of the wind speed, and the wind speed measuring precision is improved. The wind speed monitoring is carried out in the coal mine underground of flammable and combustible gas mixture, the metallurgical and chemical field, the environment protection, the weather and other environments, and the wind speed monitoring device has wide application value.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a circuit diagram of a potentiometer control module and an amplification module in a circuit board;
FIG. 3 is a circuit diagram of a boost module in a circuit board;
fig. 4 is a flow chart of a measurement method of the present invention.
Wherein: 1. a first connector; 2. a telescopic rod; 3. a second connector; 4. a stationary ring; 5. a third connector; 6. a wind speed sensor; 7. a wind measuring part; 8. fastening screws; 9. a circuit board; 10. a gasket; 11. a patch plug; 12. a data line; 13. a wind speed sensor probe; 14. a hand-held portion; 15. a telescopic part; 16. t-shaped tee joints; 17. a telescopic structure; 18. hand-held rod
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", "top", "end", and the like, indicate orientations or state relationships based on the orientations or state relationships shown in the drawings, are only for convenience of description and simplification of description, and do not indicate or imply that a referred mechanism or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and examples.
As shown in fig. 1, the mining wind speed measuring device and the measuring method thereof comprise a telescopic rod 2, a wind measuring part 7 connected to the telescopic rod 2 and a data line 12.
The telescopic link 2 comprises a handheld portion 14 and a telescopic portion 15, a through cavity is formed inside the telescopic link, the handheld portion 14 comprises a first connector 1 and a handheld rod 18, the first connector 1 is screwed in a threaded mode or sleeved at the tail end of the handheld portion 14, and the data line 12 enters the cavity of the telescopic link 2 from the tail end of the handheld portion 14 and is clamped through the first connector 1. The hand-held lever 14 is provided with a non-slip structure, which may be rubber, threaded or the like.
The telescopic part 15 comprises a second connector 3, a circuit board 9 and a plurality of telescopic structures 17. The telescopic structure 17 is a rod section with small front end diameter and can retract into a rod section with large rear end diameter, and meanwhile, the tail end diameter of the rod section with small front end diameter is larger than the front end diameter of the rod section with large rear end diameter; the telescopic limit can also be realized by adopting a joint with a locking function, such as a spiral joint and a snap joint.
Be equipped with retainer plate 4 and the packing ring 10 that is used for the circle line in the second connector 3, data line 12 passes the cavity of telescopic link 2 and is connected with circuit board 9, and the sinle silk welds on the solder joint of circuit board 9, and circuit board 9 is fixed in second connector 3 through retainer plate 4 with the link of data line 12, and the other end of circuit board 9 is fixed in third connector 5 through fastening screw 8. The gasket 10 is sleeved on the data line 12 to prevent the joint of the data line 12 from being damaged when the telescopic rod 2 stretches.
As shown in fig. 2 and 3, the circuit board 9 includes a wind speed sensor module FS5, amplification modules U2B and U2A, a potentiometer control module, and a voltage boosting module. The wind speed sensor 6 converts the obtained airflow information into a voltage signal through a wind speed sensor module FS5, the voltage signal is amplified through an amplifying module U2A and U2B, the AOUT adjusts the reference, and the voltage signal is finally output to a host through BOUT.
The wind measuring part 7 comprises a T-shaped tee joint 16, a wind speed sensor 6 and a third connector 5, the T-shaped tee joint 16 is a three-opening pipe connector which is vertically welded with another straight pipe in the middle of the straight pipe and is communicated with the straight pipe, wherein the two open straight pipes are main pipes, the other open straight pipe is a branch pipe, and the branch pipe is provided with a screw hole corresponding to the fastening screw 8. Through DZS-1 type low-speed wind tunnel laboratory simulation data, the main pipe of the model is 10mm in inner diameter, and 12mm in outer diameter, which is the optimal size of the model.
The wind speed sensor 6 adopts a thermal mode principle and is arranged in a branch pipe of the T-shaped tee joint 16, and a wind speed sensor probe 13 is arranged at the top end of the wind speed sensor 6. The wind speed sensor probe 13 is sheet-shaped and is positioned at the intersection point of the central lines of the main pipe and the branch pipe, and the sheet-shaped surface of the wind speed sensor probe is parallel to the two opening surfaces of the main pipe, so that wind can vertically penetrate through the wind speed sensor probe, and the measurement accuracy is improved.
A cavity is formed in the third connector 5, the tail end of the wind speed sensor 6 is screwed or sleeved on the top end of the third connector 5 through threads, and a lead penetrates through the cavity to be connected with the circuit board 9 and the wind speed sensor 6. The tail end of the third connector 5 and the left end of the circuit board 9 are fixed on the telescopic rod 2 through a fastening screw 8, and the T-shaped tee 16 is fixed at the front end of the third connector 5 through the fastening screw 8.
The data line 12 is preferably a shielded aircraft cable line, and is connected with a host through the adapter plug 11, and the wind speed sensor, the circuit board and the host form a passage.
The working principle is as follows: the wind speed sensor probe 13 in the T-shaped tee 16 converts the collected gas flow speed signal into a voltage signal, the voltage signal is amplified through the amplification modules U2A and U2B, and then the voltage signal is converted through the AD circuit of the main instrument, and the analog signal of the voltage is converted into a digital signal to be output and displayed.
The wind speed measuring method based on the mining wind speed measuring device disclosed by the invention comprises the following steps as shown in figure 4:
step 1: before starting the equipment, firstly adjusting an external stabilized voltage power supply of the wind speed sensor (6) to 4V, and connecting the wind speed sensor (6) with the input ends of amplification modules U2A and U2B on a circuit board (9);
step 2: debugging a potentiometer PR1 on the circuit board by using a miniature screwdriver, connecting a red meter pen and a black meter pen of a digital multimeter with AOUT and GND on the wind speed sensor circuit board, and adjusting the potentiometer to be based on a voltage display zero reference of the digital multimeter of 2.9V;
and step 3: connecting the adjusted wind speed sensor (6) with the circuit board (9) according to the original device, connecting the adapter plug (11) with the main instrument, and starting up the wind speed sensor;
and 4, step 4: adjusting the telescopic rod (2) to a proper measurement height to enable any end of two ends of the T-shaped tee joint (16) to face the wind and stand still, and enabling the included angle between the main pipe and the wind direction not to exceed 15 degrees (after multiple DZS-1 type low-speed wind tunnel laboratory simulation data comparison, the included angle between the main pipe and the wind direction is within 15 degrees, and a large numerical error cannot be caused);
and 5: at least 8 measuring points (for example, the wind speed is sequentially increased by 0.4m/s, 0.8m/s, 1.2m/s, 3m/s, 6m/s, 9m/s, 12m/s and 15m/s) are uniformly distributed in the wind speed measuring range of the main instrument, the measurement is performed sequentially, after the wind speed is stable, each measuring point simultaneously measures the actual wind speed value and the indication value of the main instrument, the measuring time is not less than 1min each time, each measuring point continuously measures for 2 times, and the difference value of two adjacent measurements is the repeatability error: measuring for 3 times within the measuring time of each measuring point, and taking the average value;
step 6: and operating the main instrument to calculate, display and store the obtained data.
The actual wind speed value in the step 5 is calculated according to the formula (1):
in the formula
Vs-actual wind speed value, m/s;
n-second, first operating section wind speed ratio
P is measured dynamic pressure value, Pa;
ρ -air density, kg/m 3;
P0-the atmospheric pressure of the wind tunnel chamber, Pa;
t-wind tunnel chamber temperature, deg.C;
xi-pitot tube coefficient.
Calculating the absolute value of the wind speed basic error of the main instrument:
AV’si＝|Vzi-Vsi|.........(3)
in the formula
Vsi-actual wind speed value at each measurement point, m/s;
Vzi-Main Instrument indication at each station, m/s.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. The utility model provides a mining wind speed measuring device, its characterized in that includes telescopic link (2) and connects in anemometry portion (7) and data line (12) of telescopic link (2), anemometry portion (7) are equipped with wind speed sensor (6), telescopic link (2) inside has the cavity that runs through, and data line (12) pass the cavity and are connected with the one end of circuit board (9) that set up in telescopic link (2), and the other end and the wind speed sensor (6) electric connection of circuit board (9).
2. The wind speed measuring device according to claim 1, wherein the wind measuring portion (7) comprises a T-shaped tee joint (16), a wind speed sensor (6) and a third connector (5), the tail end of the third connector (5) and the left end of the circuit board (9) are fixed on the telescopic rod (2) through a fastening screw (8), and the T-shaped tee joint (16) is fixed at the front end of the third connector (5) through the fastening screw (8).
3. Wind speed measuring device according to claim 2, characterised in that the wind speed sensor (6) is provided with a wind speed sensor probe (13) at its tip, and the wind speed sensor (6) is connected to the third connector (5) at its end.
4. A wind speed measuring device according to claim 3, wherein said wind speed sensor probe (13) is sheet-like.
5. Wind speed measuring device according to claim 1, characterised in that said telescopic rod (2) comprises a hand-held part (14) and a telescopic part (15), said hand-held part (14) comprising a first connection head (1) and a hand-held rod (18).
6. Wind speed measuring device according to claim 5, characterized in that one end of the data line (12) enters the cavity of the telescopic rod (2) from the end of the hand-held part (14) and is clamped by the first connector (1), and the other end of the data line (12) is connected with the adapter plug (11).
7. Wind speed measuring device according to claim 5, characterised in that said telescopic part (15) comprises a second connection head (3), a circuit board (9) and at least one telescopic structure (17).
8. Wind speed measuring device according to claim 7, characterised in that said telescopic structure (17) is a section with a small front diameter which can be retracted into a section with a large rear diameter, while the end diameter of the section with a small front diameter is larger than the front diameter of the section with a large rear diameter.
9. The wind speed measuring device according to claim 7, wherein a fixing ring (4) and a gasket (10) are arranged in the second connector (3), the connecting end of the circuit board (9) and the data line (12) is fixed on the second connector (3) through the fixing ring (4), the gasket (10) is sleeved on the data line (12), and the other end of the circuit board (9) is fixed on the third connector (5) through a fastening screw (8).
10. A measurement method based on a mining wind speed measurement device, which is characterized in that the measurement is carried out by adopting any one of the mining wind speed measurement devices of claims 1-9, and the method comprises the following steps:
step 1: before starting the equipment, firstly adjusting an external stabilized voltage power supply of the wind speed sensor (6) to 4V, and connecting the wind speed sensor (6) with the input ends of amplification modules U2A and U2B on a circuit board (9);
step 2: debugging a potentiometer PR1 on the circuit board (9) by using a miniature screwdriver, connecting a red meter pen and a black meter pen of the digital multimeter with AOUT and GND on the circuit board (9), and adjusting the potentiometer to be based on 2.9V of a voltage display zero point of the digital multimeter;
and step 3: connecting the adjusted wind speed sensor (6) with the circuit board (9) according to the original device, connecting the adapter plug (11) with the main instrument, and starting up the wind speed sensor;
and 4, step 4: adjusting the telescopic rod (2) to a proper measurement height to enable any one end of two ends of the T-shaped tee joint (16) to be windward and stand, and enabling an included angle between the T-shaped tee joint and the wind direction to be not more than 15 degrees;
and 5: at least 8 measuring points are uniformly distributed in the wind speed measuring range of a main instrument, the wind speed is increased gradually, the measurement is performed in sequence, after the wind speed is stable, an actual wind speed value and an indication value of the main instrument are measured at each measuring point, the measuring time is not less than 1min, each measuring point is measured for 2 times continuously, and the difference value of two adjacent measurements is a repeatability error: measuring for 3 times within the measuring time of each measuring point, and taking the average value;
step 6: and operating the main instrument to calculate, display and store the obtained data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010891894.3A CN111879964A (en) | 2020-08-31 | 2020-08-31 | Mining wind speed measuring device and measuring method thereof |
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| CN202010891894.3A CN111879964A (en) | 2020-08-31 | 2020-08-31 | Mining wind speed measuring device and measuring method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459534A (en) * | 2021-12-24 | 2022-05-10 | 陕西斯达防爆安全科技股份有限公司 | Mining intelligent multi-parameter measuring device and measuring method |
| CN114624466A (en) * | 2022-05-17 | 2022-06-14 | 西南石油大学 | Hot wire anemometer-based test device and test method |
-
2020
- 2020-08-31 CN CN202010891894.3A patent/CN111879964A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459534A (en) * | 2021-12-24 | 2022-05-10 | 陕西斯达防爆安全科技股份有限公司 | Mining intelligent multi-parameter measuring device and measuring method |
| CN114624466A (en) * | 2022-05-17 | 2022-06-14 | 西南石油大学 | Hot wire anemometer-based test device and test method |
| CN114624466B (en) * | 2022-05-17 | 2022-07-12 | 西南石油大学 | Hot wire anemometer-based testing device and testing method |
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