CN110146724B - Wind direction detection device and method - Google Patents
Wind direction detection device and method Download PDFInfo
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- CN110146724B CN110146724B CN201910523551.9A CN201910523551A CN110146724B CN 110146724 B CN110146724 B CN 110146724B CN 201910523551 A CN201910523551 A CN 201910523551A CN 110146724 B CN110146724 B CN 110146724B
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- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005452 bending Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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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
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
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Abstract
The invention discloses a wind direction detection device and a method, comprising the following steps: the device comprises a fixed foundation, a plurality of elastic connecting pieces and a direct current power supply; a circle of elastic connecting sheets are uniformly arranged on the top edge of the fixed foundation; the inner side surface of each elastic connecting sheet is provided with a first variable resistance wire; each first strain resistance wire is connected in series with a first ammeter; the corresponding first strain resistance wire, the first ammeter and the direct current power supply are connected in series to form a first closed circuit, and the first ammeter can record the change of current in the corresponding first closed circuit. The invention uniformly arranges a circle of strain resistance wires in the elastic connecting sheet, and when the strain resistance wires are blown by wind in the front, the deformation of the strain resistance wires is maximum, so that the wind direction can be judged. And a vertical rod and an internal strain resistance wire are arranged in the center of the round foundation and used for eliminating the influence of the environmental temperature change on the resistivity. The invention has the advantages of quick response, simple structure, firm quality, low price and the like, and the method is simple and is not affected by temperature.
Description
Technical Field
The invention belongs to the technical field of wind direction detection, and particularly relates to a wind direction detection device and method.
Background
Along with exhaustion of global fossil energy, tension in supply and severe climate change, the importance of renewable energy development is recognized in all countries in the world, and high importance is attached to wind power development, so that the world wind power industry is rapidly developed. Since 1996, the annual average growth rate of global wind power was kept above 25%, and wind power became the fastest growing clean energy in the world.
Yaw is an indispensable link in the running of the wind turbine, and a yaw system adjusts the wind direction, so that the wind wheel keeps a windward state to the greatest extent, wind energy is captured to the greatest extent, and the wind turbine is effectively protected. Yaw of the wind generating set is mainly controlled according to wind direction determined by a mechanical wind vane arranged at the top end of the cabin. Because of the randomness of wind, the wind direction is often changed, if the yaw is in error, the swept surface of the wind wheel is not perpendicular to the wind direction, so that the power output is affected, the bearing load of the unit is increased, and the effects of increased load of a tower, a main shaft, a yaw system and blades, reduced service life of a fan and the like are mainly reflected. Therefore, it is important to ensure the accuracy of wind direction detection.
The wind vane is an object with an asymmetric shape, and the gravity center is fixed on a vertical shaft. When wind blows, one end of the air flow with larger resistance can rotate along the wind to display the wind direction. The arrow of the wind vane always points to the source of the wind. The principle of wind vane wind direction measurement is simple, but due to inertia, when the wind direction changes, the wind vane rotates along with the wind direction, and a certain time delay exists; meanwhile, the relative moving parts are worn, and the measuring error exists in long-time operation; and the weather of rain and snow can also influence the wind direction measurement of the wind vane.
Disclosure of Invention
The invention aims to provide a wind direction detection device and a method for solving the technical problems. The device based on the strain effect of the strain resistor has the advantages of simple structure, firm quality, low price and the like, and the method has accurate detection result, is simple and is not influenced by temperature.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a wind direction detection device, comprising: the device comprises a fixed foundation, a plurality of elastic connecting pieces and a direct current power supply;
a circle of elastic connecting sheets are uniformly arranged on the top edge of the fixed foundation;
the inner side surface of each elastic connecting sheet is provided with a first variable resistance wire;
Each first strain resistance wire is connected in series with a first ammeter;
The corresponding first strain resistance wire, the first ammeter and the direct current power supply are connected in series to form a first closed circuit, and the first ammeter can record the change of current in the corresponding first closed circuit.
Further, a vertical rod is arranged on the fixed foundation, a second strain resistance wire is arranged in the center of the vertical rod, the second strain resistance wire, a second ammeter and a direct current power supply are connected in series to form a second closed circuit, and the second ammeter can record the change of current in the second closed circuit.
Further, the elastic connecting piece is vertically arranged in a natural state; the elastic connecting piece is a wind speed stress device, the elastic connecting piece is inclined under wind force, the more the wind direction is positive, the larger the stress of the elastic connecting piece is, the larger the inclination amplitude is, and the elastic connecting piece is restored to be vertical when no wind exists.
Further, the first strain resistance wire is arranged at the center of the inner side surface of the first elastic connecting sheet and is clung to the elastic connecting sheet, and deformation is generated along with the bending of the elastic connecting sheet; when the first strain resistance wire is deformed, the length of the first strain resistance wire is increased, the cross-sectional area of the first strain resistance wire is reduced, and the resistance value of the first strain resistance wire is increased.
Furthermore, the central vertical rod is kept in an upright state and is not influenced by wind power, and the second strain resistance wire is used for compensating the influence of the ambient temperature on the wind direction detection device.
Further, the fixed foundation is a round fixed foundation.
Further, the vertical rod is arranged at the middle position of the round of elastic connecting sheet.
Further, the elastic connecting sheet is flat; the ammeter data reading device is used for reading the current readings of all the first ammeters, and the vertical direction of the elastic connecting sheet corresponding to the first ammeters with the smallest current is the wind direction.
Further, the number of the elastic connecting sheets is even, and all the elastic connecting sheets are fixed on the top of the foundation for one circle; the two opposite elastic connecting sheets are arranged in a central symmetry manner with the center of the fixed foundation.
A method of detecting wind direction, comprising: reading all the readings of the first ammeter and the second ammeter, and calculating the reading difference value of the readings of all the first ammeter and the second ammeter, wherein the vertical direction of the elastic connecting sheet corresponding to the first ammeter with the largest difference value is the wind direction.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the wind direction detection device, the elastic connecting piece corresponding to the ammeter with the minimum current is found out by utilizing the strain effect of the strain resistor, namely, the direction corresponding to the elastic connecting piece is the wind direction, and the wind direction detection device has the advantages of being high in accuracy, rapid in response, simple in structure, firm in quality, low in price and the like.
2) According to the wind direction measuring device, the elastic connecting sheets are arranged in a circle, so that wind direction can be measured more accurately.
3) The number of the elastic connecting sheets is even, and all the elastic connecting sheets fix the top of the foundation for one circle; the two opposite elastic connecting sheets are arranged in a central symmetry manner with the center of the fixed foundation; the two opposite elastic connecting sheets are arranged in a central symmetry way, so that the two strain sheets in the same wind direction are blocked one by one, and the current sizes of the strain sheets are different, so that the wind receiving surface of the elastic connecting sheet which receives wind first is judged to be the wind direction, the detection precision is further improved, and the specific wind direction can be judged.
4) According to the method, the direction of the wind speed is obtained by calculating the difference value of the currents between the two ampere meters and finding the elastic connecting sheet corresponding to the ammeter with the largest current difference value, and compared with the prior art, the method is high in accuracy, simple and free from the influence of the ambient temperature.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
Fig. 1 is a schematic partial view of a wind direction detecting apparatus according to the present invention.
Fig. 2 is an overall schematic diagram of a wind direction detecting apparatus according to the present invention.
Wherein: 1. a circular fixed foundation; 2. an elastic connecting piece; 3. a first strain resistance wire; 4. a vertical rod; 5. a second strain resistance wire; 6. a first ammeter; 6', a second ammeter; 7. a DC power supply.
Detailed Description
The application will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The following detailed description is exemplary and is intended to provide further details of the application. Unless defined otherwise, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the application.
As shown in fig. 1 and fig. 2, the wind direction detection device provided by the invention comprises a circular fixed foundation 1, a plurality of identical elastic connecting pieces 2 are uniformly distributed on the top edge of the circular fixed foundation 1, identical first strain resistance wires 3 are arranged on each elastic connecting piece 2, each first strain resistance wire 3 corresponds to one first ammeter 6, and the first strain resistance wires 3, the first ammeter 6 and a direct current power supply 7 are connected in series to form a closed circuit. The center of the top of the round fixed foundation 1 is provided with a vertical rod 4, a second strain resistance wire 5 is fixed in the vertical rod 4, and the second strain resistance wire 5, a second ammeter 6' and a direct current power supply 7 are connected in series to form a closed loop.
When the first strain resistance wire 3 is deformed, the resistance value changes due to the influence of the incoming wind direction, and the first ammeter 6 can record the change of the current in the closed circuit.
Meanwhile, when the vertical rod 4 receives wind force, the deformation does not occur, so the second strain resistance wire 5 inside the vertical rod does not deform. However, when the ambient temperature changes, the resistivity of the second strained resistive wire 5 will change. The arrangement of the strain resistance wire in the central vertical rod 4 is to eliminate errors caused by ambient temperature variations to the measuring device.
When wind blows through the detection device, each elastic connecting piece 2 is blown by wind to incline, so that the first strain resistance wire 3 connected with the elastic connecting piece 2 is deformed, and the resistance value of the first strain resistance wire 3 is increased; because the elastic connection piece 2 at each position is affected by different wind, the resistance value of the first strain resistance wire 3 is different, the inclination amplitude is maximum when the elastic connection piece 2 is vertical to the wind direction, the resistance value of the connected first strain resistance wire 3 is also the largest, and the current is also the smallest. The direction corresponding to the elastic connection piece 2 where the first strain resistance wire 3 with the smallest current is located is the wind direction.
The invention also provides a wind direction detection method, which is based on the wind direction detection device and comprises the following steps:
The first ammeter 6 and the second ammeter 6' are required to be provided with reading and analyzing equipment, the values of all the ammeters can be read and compared, and the elastic connecting sheet corresponding to the ammeter with the largest current difference value is found by calculating the current difference value of all the ammeters, so that the direction of the wind speed is obtained.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (4)
1. A wind direction detection apparatus, comprising: a fixed foundation, a plurality of elastic connecting pieces (2) and a direct current power supply (7);
a circle of elastic connecting sheets (2) are uniformly arranged on the top edge of the fixed foundation;
the inner side surface of each elastic connecting sheet (2) is provided with a first strain resistance wire (3);
each first strain resistance wire (3) is connected in series with a first ammeter (6);
The corresponding first strain resistance wire (3), the first ammeter (6) and the direct current power supply (7) are connected in series to form a first closed circuit, and the first ammeter (6) can record the change of the current in the corresponding first closed circuit;
A vertical rod (4) is arranged on a fixed basis, a second strain resistance wire (5) is arranged in the center of the vertical rod (4), the second strain resistance wire (5), a second ammeter (6 ') and a direct current power supply (7) are connected in series to form a second closed circuit, and the second ammeter (6') can record the change of current in the second closed circuit;
The elastic connecting piece (2) is vertically arranged in a natural state; the elastic connecting piece (2) is a wind speed stress device, the elastic connecting piece (2) is inclined by wind force, the more positive the wind direction is, the larger the stress of the elastic connecting piece (2) is, the larger the inclination amplitude is, and the elastic connecting piece (2) is restored to be vertical when no wind exists; the elastic connecting sheet (2) is flat;
The ammeter data reading device is used for reading the ampere readings of all the first ammeters (6), and the vertical direction of the elastic connecting sheet (2) corresponding to the first ammeters (6) with the smallest ampere is the wind direction;
The first strain resistance wire (3) is arranged at the center of the inner side surface of the elastic connecting sheet (2) and is clung to the elastic connecting sheet (2), and deforms along with the bending of the elastic connecting sheet (2); when the first strain resistance wire (3) deforms, the length of the first strain resistance wire is increased, the cross-sectional area of the first strain resistance wire is reduced, and the resistance value of the first strain resistance wire is increased;
The vertical rod (4) is kept in an upright state and is not influenced by wind power, and the second strain resistance wire (5) is used for compensating the influence of the ambient temperature on the wind direction detection device; the vertical rod (4) is arranged at the middle position of a circle of elastic connecting sheets (2).
2. A wind direction detection apparatus according to claim 1, wherein: the fixed foundation is a round fixed foundation.
3. A wind direction detection apparatus according to claim 1, wherein: the number of the elastic connecting sheets (2) is even; the two opposite elastic connecting sheets (2) are arranged in a central symmetry manner with the center of the fixed foundation.
4. A method of detecting wind direction using the wind direction detection apparatus of claim 1, comprising: reading all the readings of the first ammeter (6) and the second ammeter (6 '), and calculating the reading difference value of all the readings of the first ammeter (6) and the second ammeter (6'), wherein the vertical direction of the elastic connecting sheet (2) corresponding to the first ammeter (6) with the largest difference value is the wind direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910523551.9A CN110146724B (en) | 2019-06-17 | 2019-06-17 | Wind direction detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910523551.9A CN110146724B (en) | 2019-06-17 | 2019-06-17 | Wind direction detection device and method |
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| Publication Number | Publication Date |
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| CN110146724A CN110146724A (en) | 2019-08-20 |
| CN110146724B true CN110146724B (en) | 2024-04-26 |
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| CN201910523551.9A Active CN110146724B (en) | 2019-06-17 | 2019-06-17 | Wind direction detection device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116660574A (en) * | 2023-05-29 | 2023-08-29 | 北京瑞科同创能源科技有限公司 | Detection device, flow rate detection method, and flow direction detection method |
Citations (6)
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| CN103278659A (en) * | 2013-05-20 | 2013-09-04 | 东南大学 | Wind speed sensor based on stress measurement |
| CN204945162U (en) * | 2015-07-28 | 2016-01-06 | 国家电网公司 | A kind of direction measuring apparatus based on fiber Bragg grating strain sensor |
| CN106595592A (en) * | 2016-12-13 | 2017-04-26 | 武汉理工大学 | Double-direction inclinometer based on liquid level horizontal principle |
| CN106980031A (en) * | 2017-05-08 | 2017-07-25 | 中国华能集团清洁能源技术研究院有限公司 | A kind of wind measuring device and method |
| CN108459175A (en) * | 2018-03-30 | 2018-08-28 | 吉林大学 | A kind of wind speed wind direction sensor and its measurement method based on bionical deformation blade |
| CN209803176U (en) * | 2019-06-17 | 2019-12-17 | 中国华能集团有限公司 | Wind direction detection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9846092B2 (en) * | 2013-03-12 | 2017-12-19 | Understory, Inc. | Mechanical strain-based weather sensor |
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- 2019-06-17 CN CN201910523551.9A patent/CN110146724B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278659A (en) * | 2013-05-20 | 2013-09-04 | 东南大学 | Wind speed sensor based on stress measurement |
| CN204945162U (en) * | 2015-07-28 | 2016-01-06 | 国家电网公司 | A kind of direction measuring apparatus based on fiber Bragg grating strain sensor |
| CN106595592A (en) * | 2016-12-13 | 2017-04-26 | 武汉理工大学 | Double-direction inclinometer based on liquid level horizontal principle |
| CN106980031A (en) * | 2017-05-08 | 2017-07-25 | 中国华能集团清洁能源技术研究院有限公司 | A kind of wind measuring device and method |
| CN108459175A (en) * | 2018-03-30 | 2018-08-28 | 吉林大学 | A kind of wind speed wind direction sensor and its measurement method based on bionical deformation blade |
| CN209803176U (en) * | 2019-06-17 | 2019-12-17 | 中国华能集团有限公司 | Wind direction detection device |
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