CN112325811A - Wind turbine blade clearance detection system based on Bluetooth and application method thereof - Google Patents
Wind turbine blade clearance detection system based on Bluetooth and application method thereof Download PDFInfo
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- CN112325811A CN112325811A CN202011335632.5A CN202011335632A CN112325811A CN 112325811 A CN112325811 A CN 112325811A CN 202011335632 A CN202011335632 A CN 202011335632A CN 112325811 A CN112325811 A CN 112325811A
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- bluetooth signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- Combustion & Propulsion (AREA)
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- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention relates to the technical field of wind turbine blade clearance detection, in particular to a wind turbine blade clearance detection system based on Bluetooth and a use method thereof. The novel multifunctional tower comprises a tower barrel, wherein a cabin is arranged on the tower barrel, blades are uniformly arranged at the front end of the cabin, the tip parts of the blades are respectively provided with a Bluetooth signal transmitting module, a Bluetooth signal receiving module for establishing communication is arranged around the Bluetooth signal transmitting module, a calibration module for establishing communication is arranged around the Bluetooth signal receiving module, and a calibration module for establishing communication with the Bluetooth signal transmitting module and the Bluetooth signal receiving module is arranged on the outer wall of the tower barrel. The blade clearance measurement device is reasonable and simple in structure and convenient and fast to operate, and the real-time coordinates of the blade can be calculated by adopting the matching use of the Bluetooth signal transmitting module, the Bluetooth signal receiving module, the calibration module and the calibration module, so that the real-time clearance value can be calculated.
Description
Technical Field
The invention relates to the technical field of wind turbine blade clearance detection, in particular to a wind turbine blade clearance detection system based on Bluetooth and a use method thereof.
Background
Blade clearance refers to the minimum clearance of the blade tip from the tower surface. Although clearance corresponding to various working conditions can be simulated in simulation software, the working conditions of the unit are complex and changeable in actual operation, the clearance of the blades is dynamically changed, when the thrust is maximum, the blade tips deform towards the tower, and the engine room inclines in the nodding direction, so that the clearance of the blades is greatly reduced, and the danger that the blades touch the tower barrel is caused.
At present, the blade clearance detection modes comprise vision technology ranging, laser ranging, radar ranging, infrared ranging and the like. The vision technology distance measurement has higher requirements on image resolution and computer performance; the laser ranging can be influenced by weather illumination, and the radar ranging can be of various types but can be influenced by distance, illumination and weather; infrared ranging is susceptible to weather and can only detect objects in close range.
The above problems are problems that the art needs to solve.
Disclosure of Invention
The invention aims to provide a wind turbine blade clearance detection system based on Bluetooth, so that a clearance value can be calculated, and the danger that a blade touches a tower barrel is avoided.
In order to solve the technical problem, the invention provides the following scheme: the utility model provides a based on bluetooth wind turbine blade headroom detecting system, includes a tower section of thick bamboo, be provided with the cabin on the tower section of thick bamboo, the cabin front end evenly is provided with the blade, blade tip portion all is provided with bluetooth signal emission module, be provided with the bluetooth signal receiving module who establishes the communication around the bluetooth signal emission module, be provided with the calibration module who establishes the communication around the bluetooth signal receiving module, be provided with on the tower section of thick bamboo outer wall with bluetooth signal emission module with the calibration module of bluetooth signal receiving module establishment communication.
As a further improvement of the invention, the Bluetooth signal receiving module is arranged at the bottom of the tower.
As a further improvement of the invention, the Bluetooth signal receiving module is arranged inside the cabin.
As a further improvement of the present invention, the calibration module is located at the same distance from each of the bluetooth signal receiving modules.
As a further improvement of the invention, the calibration module is arranged on one side of the outer wall of the tower barrel, which is close to the blade.
As a further improvement of the invention, each Bluetooth signal transmitting module simultaneously establishes communication with the Bluetooth signal receiving module.
A use method of a wind turbine blade clearance detection system based on Bluetooth comprises the following steps:
s1: defining the center formed by the three blades as an origin OR, defining the rotating shaft direction of the blades as an XR axis, defining the direction orthogonal to the XR as a ZR axis, and finally confirming the YR axis according to the right-hand rule;
s2: the calibration module corrects the space coordinate;
s3: the Bluetooth signal transmitting module on each blade simultaneously transmits signals to the three Bluetooth signal receiving modules;
s4: calculating the distance between the Bluetooth signal transmitting module and the Bluetooth signal receiving module, and further calculating the coordinates of the Bluetooth signal transmitting modules on the three blades;
s5: the calibration module with bluetooth signal emission module and arbitrary one bluetooth signal receiving module establishes the communication, judges the position state of blade, when the blade moves to the lowest, record its headroom value.
The invention has the beneficial effects that:
the invention has reasonable and simple structure and convenient and fast operation, can calculate the real-time coordinate of the blade by adopting the matching use of the Bluetooth signal transmitting module, the Bluetooth signal receiving module, the calibration module and the calibration module, thereby calculating the real-time clearance value, has the advantages of small load of the collector, low power consumption, low cost and the like, simultaneously can be compared with the calibrated characteristic value, and can send out an alarm when the measured clearance value is less than the characteristic value, thereby avoiding the collision of the blade and the tower barrel and further improving the safety.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
fig. 3 is a schematic diagram of a coordinate system of the present invention.
Reference numerals: 1. a tower drum; 2. a blade; 3. a nacelle; 4. a Bluetooth signal transmitting module; 5. a Bluetooth signal receiving module; 6. a calibration module; 7. and a calibration module.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1 and 2, a first embodiment of the present invention includes a tower 1, a nacelle 3 is disposed on the tower 1, three blades 2 are uniformly disposed at the front end of the nacelle 3, a bluetooth signal transmitting module 4 is disposed at the tip of each blade 2, the three bluetooth signal transmitting modules 4 form a signal transmitting array, three bluetooth signal receiving modules 5 are mounted at the bottom of the tower 1 according to actual requirements, and are convenient to mount and operate, a calibration module 6 for establishing communication is disposed around the bluetooth signal receiving module 5, and the calibration module 6 is required to be equidistant from each bluetooth signal receiving module 5, so that the calibration module 5 is mounted at the central axis of the tower 1 for calibrating the bluetooth signal receiving modules 5, a calibration module 7 for establishing communication with the bluetooth signal transmitting modules 4 and the bluetooth signal receiving modules 5 is disposed on the outer wall of the tower 1, the center formed by the three blades 2 is defined as an origin OR, the rotating shaft direction of the blades 2 is defined as an XR axis, the direction orthogonal to the XR axis is defined as a ZR axis, the YR axis is confirmed according to the right-hand rule, the bluetooth signal transmitting modules 4 on each blade 2 simultaneously transmit signals to the three bluetooth signal receiving modules 5, after the bluetooth signal receiving modules 5 receive the signals of each bluetooth signal transmitting module 4, the distance between the calibration module 7 and the bottom surface is known, the coordinates of the three bluetooth signal receiving modules 5 which are opposite to each other and establish contact with each other are also known, and thus the distance between the bluetooth signal transmitting modules 4 and the bluetooth signal receiving modules 5 can be calculated: the distance algorithm is based on a radio fading model, RSSI is proportional to the logarithm of the distance, i.e., d ═ 10^ ((abs (RSSI) -a)/(10 × n)); wherein d is the distance between the bluetooth signal transmitting module 4 and the bluetooth signal receiving module 5, RSSI is the received signal strength (negative), a is the signal strength when two modules are separated by one meter, n is the environmental attenuation factor, the coordinates of the bluetooth signal transmitting module 4 on three blades 2 can be obtained, when the blade 2 runs to the lowest position, the distance of the blade 2 relative to the tower 1 can be obtained, and thus the clear value can be obtained.
In actual operation, the calibration module 6 can correct the space coordinate in time, so that errors caused by coordinate system transformation are avoided; the calibration module 7 needs to communicate with the Bluetooth signal transmitting module 4 and any one of the Bluetooth signal receiving modules 5, can obtain the outline of the tower barrel 1 and judge whether the blade 2 is in a vertically downward state, and is finally used for calculating a clearance value; and the ideal track of the blade 2 is analyzed by using simulation software, so that an ideal clearance value is calculated, the calculated clearance value is compared with the ideal clearance value, and an alarm is triggered when the calculated clearance value is smaller than the ideal clearance value, so that the collision between the blade 2 and the tower 1 is avoided.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (7)
1. The utility model provides a based on bluetooth wind turbine blade headroom detecting system, includes a tower section of thick bamboo (1), be provided with cabin (3) on a tower section of thick bamboo (1), cabin (3) front end evenly is provided with blade (2), a serial communication port, blade (2) point portion all is provided with bluetooth signal emission module (4), be provided with bluetooth signal receiving module (5) of establishing the communication around bluetooth signal emission module (4), be provided with calibration module (6) of establishing the communication around bluetooth signal receiving module (5), be provided with on a tower section of thick bamboo (1) outer wall with bluetooth signal emission module (4) with calibration module (7) of bluetooth signal receiving module (5) establishment communication.
2. The system for detecting the clearance of the blades of the wind turbine based on the Bluetooth as claimed in claim 1, wherein the Bluetooth signal receiving module (5) is arranged at the bottom of the tower (1).
3. The system for detecting the clearance of the blades of the wind turbine based on the Bluetooth as claimed in claim 1, wherein the Bluetooth signal receiving module (5) is arranged inside the engine room (3).
4. The system for detecting the clearance of the wind turbine blade based on the Bluetooth as claimed in claim 1, wherein the calibration module (6) is located at the same distance from each Bluetooth signal receiving module (5).
5. The system for detecting the clearance of the blade of the wind turbine based on the Bluetooth as claimed in claim 1, wherein the calibration module (7) is disposed on the outer wall of the tower (1) near the blade (2).
6. The system for detecting the clearance of the blades of the wind turbine based on the Bluetooth as claimed in claim 1, wherein each Bluetooth signal transmitting module (4) simultaneously establishes communication with the Bluetooth signal receiving module (5).
7. Use of the system for detecting blade clearance of a Bluetooth-based wind turbine as claimed in any one of claims 1 to 6, comprising the steps of:
s1: defining the center formed by the three blades (2) as an origin OR, defining the rotating shaft direction of the blades (2) as an XR axis, defining the direction orthogonal to the XR as a ZR axis, and finally confirming the YR axis according to the right-hand rule;
s2: the calibration module (6) corrects the space coordinate;
s3: the Bluetooth signal transmitting module (4) on each blade (2) simultaneously transmits signals to the three Bluetooth signal receiving modules (5);
s4: calculating the distance between the Bluetooth signal transmitting module (4) and the Bluetooth signal receiving module (5), and further calculating the coordinates of the Bluetooth signal transmitting module (4) on the three blades (2);
s5: demarcate module (7) with bluetooth signal emission module (4) and arbitrary bluetooth signal receiving module (5) establish the communication, judge the position state of blade (2), when blade (2) move to the lowest, record its headroom value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011335632.5A CN112325811A (en) | 2020-11-25 | 2020-11-25 | Wind turbine blade clearance detection system based on Bluetooth and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011335632.5A CN112325811A (en) | 2020-11-25 | 2020-11-25 | Wind turbine blade clearance detection system based on Bluetooth and application method thereof |
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| CN112325811A true CN112325811A (en) | 2021-02-05 |
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| CN202011335632.5A Pending CN112325811A (en) | 2020-11-25 | 2020-11-25 | Wind turbine blade clearance detection system based on Bluetooth and application method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027705A (en) * | 2021-04-14 | 2021-06-25 | 常州安塔歌电子科技有限公司 | Wind driven generator blade clearance distance measuring method based on ultra-wideband electromagnetic waves |
-
2020
- 2020-11-25 CN CN202011335632.5A patent/CN112325811A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027705A (en) * | 2021-04-14 | 2021-06-25 | 常州安塔歌电子科技有限公司 | Wind driven generator blade clearance distance measuring method based on ultra-wideband electromagnetic waves |
| CN113027705B (en) * | 2021-04-14 | 2024-02-06 | 常州安塔歌电子科技有限公司 | Wind driven generator blade clearance distance measuring method based on ultra-wide electromagnetic wave |
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