CN203177960U - Wind power blade wireless vibration monitoring device based on kinetic energy cell - Google Patents
Wind power blade wireless vibration monitoring device based on kinetic energy cell Download PDFInfo
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- CN203177960U CN203177960U CN 201320199443 CN201320199443U CN203177960U CN 203177960 U CN203177960 U CN 203177960U CN 201320199443 CN201320199443 CN 201320199443 CN 201320199443 U CN201320199443 U CN 201320199443U CN 203177960 U CN203177960 U CN 203177960U
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- energy battery
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Abstract
The utility model discloses a wind power blade wireless vibration monitoring device based on a kinetic energy cell. The device comprises sensor nodes positioned in blades of a wind generating set and a coordinator positioned in a cabin. Each sensor node is connected with the coordinator through wireless communication. A vibration signal of each blade is collected based on a control signal of the coordinator, and the vibration signal is sent to the coordinator for processing. Each sensor node comprises a kinetic energy cell module having a self-powered function. According to the device, the kinetic energy cell is adopted for self power supply, each sensor node does not need an external power line, and problems of power supply are solved. In addition, a wireless sensor network is adopted to realize monitoring on the vibration of the blades, thereby preventing interference from wired transmission of rotating machinery signals. The sensor nodes are installed in the blades, and thus the sensor nodes do not damage surfaces of the blades, suffers little environmental interference, do not require maintenance, and has a long service life.
Description
Technical field
The utility model relates to the wind power technology field, particularly relates to a kind of wind electricity blade wireless vibration monitoring device based on the kinetic energy battery.
Background technology
The wind-powered electricity generation unit is to be the large scale electrical power unit of electric energy with wind energy transformation.Blade is the critical piece of capturing wind energy, will bear very large-scale load fluctuation in operational process.In the long-time running of wind-powered electricity generation unit, blade may be frozen, the variable effect of dust storm or self material property, causes to catch that wind energy power descends, power loss, more leaf destruction may occur, causes enormous economic loss.By the vibrational state of monitoring blade, can assess the operating characteristic of blade, detect material damage or the icing situation of blade.
At present, wind electricity blade is carried out vibration-testing and be confined to blade interior space constraint and the signal transmission of rotation under the operating mode.General using vibration measurement with laser technology is tested; this method requires wind energy conversion system to shut down; laser vibration measurer is placed on around the tower tube in the certain distance; determined the laser beam elevation angle; the laser beam array is incident upon on the blade; laser light reflected signal when recording blade vibration then calculates by computer for analysis, and the vibratory response that obtains blade is modal parameter.The method that also has is to paste solar powered wireless senser at blade surface, and the receiving element that vibration signal is transferred to engine room inside is handled.
Though above-mentioned two kinds of methods can be measured the blade modal parameter more exactly, all have certain defective.The former need shut down blower fan, can only regularly monitor blade, can not play the effect of surveying damage; And the latter is subject to the life-span of solar panel, and it is exposed outside, and the dust storm wearing and tearing can make the sensor accelerated deterioration.
The utility model content
The purpose of this utility model provides a kind of can the power supply voluntarily and the wind electricity blade wireless vibration monitoring device of real-time detection wind electricity blade damage.
For achieving the above object, the utility model adopts following technical scheme:
A kind of wind electricity blade wireless vibration monitoring device based on the kinetic energy battery comprises: the sensor node and the telegon that is positioned at engine room inside that are positioned at wind generator set blade; Wherein, described sensor node is connected with described telegon by radio communication, control signal according to telegon is carried out the blade vibration signals collecting, and vibration signal is sent to telegon handles, and described sensor node comprises the kinetic energy battery module with self-powered function.
Further, described sensor node is arranged on the web of blade inner chamber at nearly blade tip place.
Further, described kinetic energy battery module comprises: the kinetic energy harvester, comprise the stator coil, spring and the magnetic block that are fixed on the both direction, described magnetic block is connected stator coil inside by spring, and the to-and-fro movement when rotating or vibrating with the wind-powered electricity generation blade by described magnetic block is converted into electric energy with kinetic energy; Rectification circuit is connected with described kinetic energy harvester, is used for the electric energy that the kinetic energy harvester transforms is converted to direct current energy; Lithium battery is connected with described commutated current, is used for storing direct current energy; And holding circuit, be connected with lithium battery with described kinetic energy harvester, be used for monitoring the charge and discharge process.
Further, described sensor node also comprises: sensor, single-chip microcomputer and wireless communication module; Described sensor is powered by the kinetic energy battery module, and is gathered the vibration signal of wind electricity blade by Single-chip Controlling; Single-chip microcomputer by the power supply of kinetic energy battery module, by the control signal of wireless communication module reception from telegon, and will be sent to telegon from the vibration signal that sensor collects.
Further, between described sensor and single-chip microcomputer, also be provided with signal conditioning circuit, be used for the vibration signal of wind electricity blade is carried out shaping, filtering.
Further, described sensor is 3 axle acceleration sensors, and the Y-axis of described 3 axle acceleration sensors is pointed to wheel hub, and X-axis is parallel with the wind electricity blade normal direction.
Further, described 3 axle acceleration sensors are capacitance type sensor.
Further, described telegon comprises: single-chip microcomputer, and be used for sending the collection control signal to described sensor node by radio communication, and receive the vibration signal that described sensor node sends, store, calculate and handle; And wireless communication module, be used for realizing radio communication.
Further, on the described telegon also expansion GPRS remote radio communication module arranged.
Further, described wireless communication module satisfies 2.4GHz frequency range short-range wireless communication protocol.
Further, described wireless communication module also is connected with power amplifier.
Because adopt technique scheme, the utility model has the following advantages at least:
(1) owing to adopt the kinetic energy battery technology to power, the kinetic energy that produces during with blade rotation, vibration is converted into the required electric energy of sensor node work, and sensor node does not need circumscripted power line, has solved the difficult problem of sensor node power supply.
(2) owing to adopt the wireless sensor network realization to the monitoring of blade vibration, avoided the interference of rotating machinery signal wire transmission.
(3) because sensor node is installed in blade interior, do not destroy blade surface, little interference by environment can non-maintaining long-term use.
(4) owing to adopt 3 capacitance acceleration transducers to gather blade vibration, can realize gathering simultaneously the low-frequency vibration of a plurality of directions.
(5) because the most of the time sensor node is in holding state, just enter mode of operation when only obtaining sample command, this mode of operation low-power consumption, long service life.
Description of drawings
Above-mentioned only is the general introduction of technical solutions of the utility model, and for can clearer understanding technological means of the present utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is a kind of wind electricity blade wireless vibration monitoring device general arrangement schematic based on the kinetic energy battery of the present utility model.
Fig. 2 A, Fig. 2 B are respectively that blade is in level and the layout synoptic diagram of sensor node when edge-on.
Fig. 3 is the sensor node synoptic diagram.
Fig. 4 is kinetic energy battery module synoptic diagram.
Fig. 5 is the telegon synoptic diagram.
Embodiment
See also shown in Figure 1ly, the utility model discloses a kind of wind electricity blade wireless vibration monitoring device based on the kinetic energy battery, comprise sensor node 2 and telegon 1, can be formed by a plurality of sensor nodes 2 and a telegon 1 according to actual conditions.Wherein, sensor node 2 is positioned at wind generator set blade, and preferred arrangements was installed before the blade manufacturing on the web of the blade inner chamber at nearly blade tip place.Telegon 1 is installed in engine room inside, by the DC power supply in the switch board of cabin, and radio communication between each sensor node 2.
Please cooperate and consult Fig. 3,4, sensor node comprises kinetic energy battery module, sensor, single-chip microcomputer and the wireless communication module with self-powered function.Sensor is powered by the kinetic energy battery module, and is gathered the vibration signal of wind electricity blade by Single-chip Controlling; Single-chip microcomputer by the control signal of wireless communication module reception from telegon, and will be sent to telegon by the power supply of kinetic energy battery module from the vibration signal that sensor collects.Wherein, the kinetic energy battery module comprises: the kinetic energy harvester, comprise the stator coil 2, spring 3 and the magnetic block 1 that are fixed on the both direction, described magnetic block 1 is connected stator coil 2 inside by spring 3, and the to-and-fro movement when rotating or vibrating with the wind-powered electricity generation blade by magnetic block 1 is converted into electric energy with kinetic energy; Rectification circuit is connected with described kinetic energy harvester, is used for the electric energy that the kinetic energy harvester transforms is converted to direct current energy (AC-DC conversion); Lithium battery is connected with described commutated current, is used for storing direct current energy; And holding circuit, be connected with lithium battery with described kinetic energy harvester, be used for monitoring the charge and discharge process.When sensor node with blower fan blade oscillating or when vibration, two magnetic blocks 1 begin to produce displacement, spring 3 is converted into potential energy with its kinetic energy, driving magnetic block 1 moves reciprocatingly in stator coil 2 inside, the exchange current that stator coil 2 produces constantly is rectified circuit and transfers direct current to and import lithium battery, thereby realizes self-powered, as shown in Figure 3, the kinetic energy battery module is sensor and single-chip microcomputer power supply, and supply voltage is respectively 5V and 3.3V.
Sensor can be 3 axle acceleration sensors, and as shown in Fig. 2 A, 2B, the sensor Y-axis is pointed to wheel hub, and X-axis is parallel with the wind electricity blade normal direction.Further, 3 axle acceleration sensors are capacitance type sensor, can be integrated in a chip internal, combine together by being electrically connected with associated circuit board.Also be provided with signal conditioning circuit between sensor and single-chip microcomputer, sensor is converted into voltage signal with the acceleration of 3 directions, carry out shaping, filtering by signal conditioning circuit again after, sampled by single-chip microcomputer by radio communication.
Single-chip microcomputer is built-in AD modular converter, receiving sampling instruction back according to sample frequency and sampling length to 3 road analog signal samplings, with the data packing, utilize wireless communication module to realize radio communication after sampling is finished.
Please cooperate and consult Fig. 5, the telegon circuit adopts the single-chip microcomputer identical with sensor node as core cell, be used for gathering control signal and send to sensor node by radio communication, and receive the vibration signal that described sensor node sends, store, calculate and handle.It is the single-chip microcomputer power supply that the 24V direct supply that pitch control cabinet can be drawn is converted into 3.3V; Can utilize the serial communication module to realize and the blower fan Master Communications.The data that single-chip microcomputer transmits sensor node write the storage of SD card, can also GP configuring RS module regularly start on the telegon, and the remote data in the SD card is transferred to analysing terminal.
The wireless communication module of sensor node and telegon is identical, is set to satisfy the program of 2.4GHz frequency range low-power consumption short-range wireless communication protocol, can realize 150 meters with interior valid data transmission.All can connect power amplifier in addition, to guarantee the efficient communication between sensor node and the telegon.
When the wind-powered electricity generation unit runs well, sensor node is together swung with blade and is vibrated, the magnetic block of kinetic energy inside battery is converted into electrical power storage with kinetic energy, be sensor and wireless communication module power supply, the work of coordinator coordinates sensor node also receives the signal that three blade inner sensor nodes are sent, handle and calculate, obtain the vibration data of blade.
The utility model adopts the industrial short-range wireless communication protocol of low-power consumption to carry out data transmission.In the time of most of, the kinetic energy battery of sensor node constantly accumulates electric energy, and sensor and single-chip microcomputer are in park mode, and wireless communication module is with the pattern snoop command of low-power consumption.Set the telegon space-number and hour send one-shot instruction to each sensor node.This moment, sensor node started, the voltage signal that single-chip microcomputer is gathered 3 axle acceleration sensors according to sample frequency and the sampling length of setting, after collection is finished its mode with packet is wirelessly transmitted to telegon, sensor and single-chip microcomputer continue to enter park mode subsequently, and the kinetic energy battery continues to accumulate electric weight.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in the protection domain of the present utility model.
Claims (11)
1. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery is characterized in that, comprising: the sensor node and the telegon that is positioned at engine room inside that are positioned at wind generator set blade; Wherein, described sensor node is connected with described telegon by radio communication, control signal according to telegon is carried out the blade vibration signals collecting, and vibration signal is sent to telegon handles, and described sensor node comprises the kinetic energy battery module with self-powered function.
2. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery according to claim 1 is characterized in that, described sensor node is arranged on the web of blade inner chamber at nearly blade tip place.
3. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery according to claim 1 is characterized in that described kinetic energy battery module comprises:
The kinetic energy harvester comprises the stator coil, spring and the magnetic block that are fixed on the both direction, and described magnetic block is connected stator coil inside by spring, and the to-and-fro movement when rotating or vibrating with the wind-powered electricity generation blade by described magnetic block is converted into electric energy with kinetic energy;
Rectification circuit is connected with described kinetic energy harvester, is used for the electric energy that the kinetic energy harvester transforms is converted to direct current energy;
Lithium battery is connected with described commutated current, is used for storing direct current energy;
And holding circuit, be connected with lithium battery with described kinetic energy harvester, be used for monitoring the charge and discharge process.
4. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery according to claim 1 is characterized in that described sensor node also comprises: sensor, single-chip microcomputer and wireless communication module;
Described sensor is powered by the kinetic energy battery module, and is gathered the vibration signal of wind electricity blade by Single-chip Controlling;
Single-chip microcomputer by the power supply of kinetic energy battery module, by the control signal of wireless communication module reception from telegon, and will be sent to telegon from the vibration signal that sensor collects.
5. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery according to claim 4 is characterized in that, also is provided with signal conditioning circuit between described sensor and single-chip microcomputer, is used for the vibration signal of wind electricity blade is carried out shaping, filtering.
6. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery according to claim 4 is characterized in that described sensor is 3 axle acceleration sensors, and the Y-axis of described 3 axle acceleration sensors is pointed to wheel hub, and X-axis is parallel with the wind electricity blade normal direction.
7. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery according to claim 6 is characterized in that described 3 axle acceleration sensors are capacitance type sensor.
8. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery according to claim 1 is characterized in that described telegon comprises:
Single-chip microcomputer is used for sending the collection control signal to described sensor node by radio communication, and receives the vibration signal that described sensor node sends, and stores, calculates and handle;
And wireless communication module, be used for realizing radio communication.
9. the wind electricity blade wireless vibration monitoring device based on the kinetic energy battery according to claim 8 is characterized in that, also expanding on the described telegon has GPRS remote radio communication module.
10. according to claim 4 or 8 described wind electricity blade wireless vibration monitoring devices based on the kinetic energy battery, it is characterized in that described wireless communication module satisfies 2.4GHz frequency range short-range wireless communication protocol.
11. according to claim 4 or 8 described wind electricity blade wireless vibration monitoring devices based on the kinetic energy battery, it is characterized in that described wireless communication module also is connected with power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199443 CN203177960U (en) | 2013-04-19 | 2013-04-19 | Wind power blade wireless vibration monitoring device based on kinetic energy cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199443 CN203177960U (en) | 2013-04-19 | 2013-04-19 | Wind power blade wireless vibration monitoring device based on kinetic energy cell |
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| CN203177960U true CN203177960U (en) | 2013-09-04 |
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| CN 201320199443 Expired - Lifetime CN203177960U (en) | 2013-04-19 | 2013-04-19 | Wind power blade wireless vibration monitoring device based on kinetic energy cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234621A (en) * | 2013-04-19 | 2013-08-07 | 国电联合动力技术有限公司 | Wind power blade wireless vibration monitoring device and method on basis of kinetic energy battery |
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2013
- 2013-04-19 CN CN 201320199443 patent/CN203177960U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234621A (en) * | 2013-04-19 | 2013-08-07 | 国电联合动力技术有限公司 | Wind power blade wireless vibration monitoring device and method on basis of kinetic energy battery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |