CN203101039U - Blower fan blade modal wireless monitoring device based on ZigBee technology - Google Patents
Blower fan blade modal wireless monitoring device based on ZigBee technology Download PDFInfo
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- CN203101039U CN203101039U CN 201320041395 CN201320041395U CN203101039U CN 203101039 U CN203101039 U CN 203101039U CN 201320041395 CN201320041395 CN 201320041395 CN 201320041395 U CN201320041395 U CN 201320041395U CN 203101039 U CN203101039 U CN 203101039U
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Abstract
The utility model relates to a blower fan blade modal wireless monitoring device based on the ZigBee technology. The blower fan blade modal wireless monitoring device based on the ZigBee technology comprises a coordinating device and at least two sensors, wherein the sensors are fixedly mounted on blades. The sensor comprises a one-chip microcomputer, an acceleration sensor, a signal conditioning circuit, a ZigBee module, a transmitting and receiving conversion circuit, a power supply circuit, and an antenna module, wherein the acceleration sensor is connected with the one-chip microcomputer through an analog-to-digital circuit, the signal conditioning circuit is connected with the analog-to-digital circuit and the one-chip microcomputer, the ZigBee module is connected with the one-chip microcomputer, and the antenna module is connected with the transmitting and receiving conversion circuit and the ZigBee module. The blower fan blade modal wireless monitoring device based on the ZigBee technology is characterized in that real time modal parameters of the blower fan blades can be obtained by monitoring blade vibration, the measuring method and the device installation mode are simple, foil gauges do not need to be used, results do not need to be corrected, processes where a test is carried out are independent from blower fan operation, and blower fan does not need to be halted.
Description
Technical field
The utility model relates to technical field of wind power generation, particularly relates to a kind of fan blade mode wireless monitoring device based on the ZigBee technology.
Background technology
The blower fan unit is to be the large scale electrical power unit of electric energy with wind energy transformation, and blade is the critical piece of blower fan unit capturing wind energy, the blower fan unit will bear very large-scale load fluctuation in operational process, the blade of the transverse axis blower fan unit of making by compound substance, in the long-time running process of blower fan unit, the material mechanical performance of blade can change, and the blower fan unit consequently occurs and catches the decline of wind energy power, the phenomenon of power loss and leaf destruction causes enormous economic loss.If can monitor, then can avoid the fatigue damage of blade by the operating characteristic of modal parameter real-time assessment blade to the mechanical characteristic of blade.
At present, fan blade is carried out test under the non-working condition that mode test is confined to carry out before the product export, use the stand fixed blade, send pumping signal by vibrator, gather the response signal at each position by the foil gauge array, utilize Computer Simulation to obtain modal parameter again.Also there is the technician to utilize the vibration measurement with laser technology that the fan blade that moves is carried out the mode test; but this method of testing 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; write down the laser signal of blade vibration then, by the analytical calculation to signal, the vibratory response that obtains blade is a modal parameter.Though above-mentioned two kinds of methods can be measured the blade modal parameter more exactly, all have certain defective.The former can only test under experimental situation, can not realize the mode test under the operating mode; The latter need shut down blower fan, and long term monitoring is carried out in inconvenience.
This shows, existing to blade modal parameter testing tool and method, in structure and use, all there are tangible deficiency and defective, demand further improvement urgently, therefore how to found a kind of ZigBee technology of in the blower fan unit running process, utilizing the blade modal parameter is carried out the wireless monitoring device of real-time testing, one of real important topic that belongs to current research and development.
The utility model content
The technical problems to be solved in the utility model provides a kind of fan blade mode wireless monitoring device, make it obtain the real-time modal parameter of blade in pilot blade vibration under the operating mode, utilize wireless sensor technology to realize the transmission of vibration data, dispense with outer connecting power, install simple, and the blower fan unit is not constituted electromagnetic interference (EMI), thereby overcome the deficiencies in the prior art.
Provide a kind of fan blade mode wireless monitoring device for solving the problems of the technologies described above the utility model based on the ZigBee technology, comprise telegon and the more than one sensor that is fixedly mounted on the blade, wherein: sensor comprises single-chip microcomputer, the acceleration transducer that is connected with single-chip microcomputer by the analog-to-digital conversion circuit, the signal conditioning circuit that is connected with analog-to-digital conversion circuit, single-chip microcomputer, the ZigBee module that is connected with single-chip microcomputer, transmitting-receiving change-over circuit, power circuit, and the Anneta module that is connected with transmitting-receiving change-over circuit, ZigBee module; Telegon comprises single-chip microcomputer, the ZigBee module that is connected with single-chip microcomputer, memory storage, serial communication modular, transmitting-receiving change-over circuit, power circuit, the GPRS module that is connected with single-chip microcomputer, storage device, and the Anneta module that is connected with transmitting-receiving change-over circuit, ZigBee module; Sensor is connected by the ZigBee module communication with telegon.
As further improvement, the Anneta module of described sensor and telegon includes power amplification circuit and the antenna that is connected with power amplification circuit, impedance matching circuit.
The power circuit of described sensor comprises power supply, the mu balanced circuit that is connected with power supply, and the electric voltage observation circuit that is connected with power supply, single-chip microcomputer.
Described power supply adopts solar cell.
The power circuit of described telegon comprises power supply and the mu balanced circuit that is connected with power supply, single-chip microcomputer.
Described acceleration transducer adopts 3 low frequency capacitance acceleration transducers.
Be connected with low noise power amplification circuit and bandwidth-limited circuit in the ZigBee module of described telegon.
After adopting above design, the utility model has following useful technique effect compared with the prior art:
1, the utility model obtains the real-time modal parameter of fan blade by monitoring blade vibration based on the fan blade mode wireless monitoring device of ZigBee technology, measuring method, the device mounting means simple, do not use foil gauge, do not need the result is revised, and the process of implementing test is independent mutually with fan operation, needn't shut down blower fan;
2, the utility model has adopted the condenser type vibration transducer based on the fan blade mode wireless monitoring device of ZigBee technology, and volume is little, long service life; Each component devices can adapt to by force, can satisfy-30 ℃ to 60 ℃ temperature range work, works under the lowered in field environment for a long time after waterproof, the anti-processing of being exposed to the sun;
3, to have adopted the small-sized solar battery based on the fan blade mode wireless monitoring device of ZigBee technology be each sensor power supply to the utility model, need not external power supply, and one-step installation, be the several years serviceable life, and no special circumstances do not need it is safeguarded;
4, the utility model is used the ZigBee wireless communication protocol based on the fan blade mode wireless monitoring device of ZigBee technology, realize the transmission of vibration data, had the advantage that system monitoring is low in energy consumption, the wireless signal frequency band is concentrated, radiation is low, the blower fan unit is not constituted electromagnetic interference (EMI).
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Above-mentioned only is the general introduction of technical solutions of the utility model, and for can clearer understanding the utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Fig. 1 is that the utility model is formed synoptic diagram based on the fan blade mode wireless monitoring device of ZigBee technology.
Fig. 2 is the utility model sensor circuit schematic diagram.
Fig. 3 is the utility model sensor scheme of installation on blade.
Fig. 4 is the utility model telegon circuit theory diagrams.
Fig. 5 is the sensor circuit schematic diagram of the utility model embodiment one.
Fig. 6 is the telegon circuit theory diagrams of the utility model embodiment two.
Embodiment
See also shown in Figure 1ly, the utility model is based on the fan blade mode wireless monitoring device of ZigBee technology, comprises telegon 2 and is fixedly mounted on more than one sensor 1 on the blade 3.
Concretely, the utility model sensor 1 is arranged on blade 3 leeward sides, be used to measure the vibration acceleration of blade tip or a certain position of blade, by the ZigBee wireless transmission protocol signal data is transferred to telegon 2, the acceleration signal of telegon 2 comprehensive each sensor 1 position calculates the modal parameter of blade 3, and result of calculation and data send to the remote analysis terminal by the GPRS radio communication.
Further, outside at fan blade 3 near blade tip 31 position lee face sensor installations 1, can in each blade 3 equal intervals 2-4 sensor 1 be set according to the demand of order analysis; Sensor 1 shell adopts waterproof, lightning protection nonmetallic materials to make, and is bonded on the blade 3 with powerful bonding agent.
See also shown in Figure 2, the utility model sensor 1 comprises: single-chip microcomputer, the acceleration transducer that is connected with single-chip microcomputer by the analog-to-digital conversion circuit, the signal conditioning circuit that is connected with analog-to-digital conversion circuit, single-chip microcomputer, the ZigBee module that is connected with single-chip microcomputer, transmitting-receiving change-over circuit, power circuit, and the Anneta module that is connected with transmitting-receiving change-over circuit, ZigBee module.
See also shown in Figure 3ly, the utility model sensor adopts 3 low frequency capacitance acceleration transducers, gathers the vibration on the different directions, and the x axle of sensor 1 is perpendicular to blade 3 surperficial directed outside, and the y axle is parallel to blade 3 surperficial positive dirctions and points to wheel hubs 4.Sensor is exported 3 tunnel simulating signals, represents the acceleration on x, y, three directions of z respectively.
Analog-to-digital conversion circuit ADC connects single-chip microcomputer and signal conditioning circuit respectively, 3 road analog vibration signals are converted into digital quantity, make things convenient for single-chip microcomputer to handle, signal conditioning circuit is nursed one's health signal, determines its gain coefficient according to the precision that the output area and the single-chip microcomputer of sensor are handled.Signal after the conditioning inserts three IO mouths of single-chip microcomputer.Wherein, the yield value of signal conditioning circuit is determined by acceleration.
Single-chip Controlling analog-to-digital conversion circuit ADC is to 3 road analog acceleration signals sampling, sample frequency is crossed to hang down and can not be covered complete blade vibration scope, the too high power consumption that then can increase circuit, according to vibration frequency of blade, setting sample frequency is in the 50Hz-200Hz scope.
The vibration signal data of 3 passages are through after the processing of single-chip microcomputer, and the ZigBee module that input is connected with single-chip microcomputer is encapsulated as a packet, and the ZigBee module is modulated to vibration signal on the 2.4GHz carrier wave frequency range, utilize the ZigBee agreement to realize wireless transmission.
Anneta module comprises a PCB formula antenna, power amplification circuit and a match circuit Balun circuit identical with the antenna equiva lent impedance.Wherein, antenna is reversed F-typed directed monopole antenna, and its equiva lent impedance is 50 ohm, and the match circuit equiva lent impedance also is 50 ohm.The power amplifier that receives and launch is separate, and uses the selection of reception/emission position signal controlling transmitting-receiving change-over circuit of ZigBee module to the two-way power amplifier.
The output terminal of ZigBee module connects match circuit Balun circuit, passes through signal amplification circuit then, connects antenna feed point, and the emissive power after the amplification satisfies outdoor 100 rice grain patterns letter demand.The antenna maximum gain direction is pointed to wheel hub 4.
Power circuit comprises the power supply that adopts solar cell for supplying power, the mu balanced circuit that is connected with power supply, the electric voltage observation circuit that is connected with power supply, single-chip microcomputer.Wherein, the solar-electricity tankage is 200mAh-1000mAh, mu balanced circuit is with the voltage of unsettled solar powered voltage conditioning for supplying each circuit chip to power, mu balanced circuit is stable 3.3V and 5V voltage with the solar array voltage conditioning, 3.3V voltage is Anneta module and ZigBee module for power supply, 5V voltage is module for power supply such as sensor, signal conditioning circuit and analog-to-digital conversion module.
Electric voltage observation circuit is connected between single-chip microcomputer and the power output end, and up to high voltage, not enough single-chip microcomputer is made regular check on this zone bit up to low level in solar powered voltage abundance, if undertension then sends the dormancy instruction and enters dormant state to telegon.
The control program of sensor is carried out the control strategy of low-power consumption.After system powered on, sensor can carry out initialization earlier, monitors default channel then, and the networking signal when receiving that telegon 2 sends then gives a response the adding network.Success adds the sampling instruction that whether inquiry has telegon to send behind the network and needs to receive, and receives the back opens interrupters, and samples and the A/D conversion according to sample frequency and sampling length.Sampling encapsulates, sends by call format data after finishing, and transmission enters the dormant state wake-up waiting after finishing.Sensor has the battery voltage detection function, when solar array voltage does not satisfy work requirements, can send instruction from the trend telegon, and system enters park mode.
See also shown in Figure 4, telegon of the present utility model comprises: single-chip microcomputer, the ZigBee module that is connected with single-chip microcomputer, memory storage, serial communication modular, transmitting-receiving change-over circuit, power circuit, the GPRS module that is connected with single-chip microcomputer, storage device, and the Anneta module that is connected with transmitting-receiving change-over circuit, ZigBee module.Telegon uses bonding agent or screw to be fixed in the hubcap of every typhoon machine.
Anneta module comprises power power discharge road, the antenna that is connected with power amplification circuit, impedance matching circuit Balun circuit.Antenna adopts a monopole omnidirectional antenna, and impedance is consistent with sensor antenna, is used to receive or send the ZigBee network signal of 2.4GHz frequency range.Power amplifier has the power identical with sensor, realize before the signal emission or the amplification after receiving, and the Balun circuit that antenna is complementary is connected between power amplifier and the ZigBee module coupling of assurance antenna.In full accord with sensor 1 on the ZigBee module hardware.
Single-chip microcomputer connects ZigBee module, GPRS communication module and data storage device, and single-chip microcomputer reads wind speed, becomes vane angle degree information from the blower fan master control system, realizes that they and the digital signal packing of each sensor store.
Serial communication modular is connected with the IO mouth of single-chip microcomputer, realizes reading and transmit blower fan master control system information according to the control signal of single-chip microcomputer.Serial communication modular is connected with pitch control cabinet in the blower fan unit wheel hub by RS-232 interface, realizes the data communication with the blower fan master control system, reads the blower fan wind speed and becomes the oar data and to master control cabinet computing machine transmits data packets.
Memory storage adopts the SD card, and packing data well are with stored in file format, and the capacity of SD card satisfies the data storage requirement in 2 years greater than 8Gb.
The GPRS module connects memory storage and single-chip microcomputer, according to the single-chip microcomputer instruction, can be by the monitoring far-end by FTP read data files in memory storage, or send data to the monitoring far-end by ICP/IP protocol.
Power circuit comprises by the blower variable-pitch switch board draws the 24V direct current, and the mu balanced circuit that this direct current is converted into the voltage that uses for single-chip microcomputer and each module.
Telegon is big to the software function demand, requires it stable, and concurrency is strong, and the utility model adopts (SuSE) Linux OS to realize customized development.This system function module is divided into initialization module, ZigBee network management module, data communication module, processing data packets module.After telegon powers on, carry out initialization earlier, check configuration file, the sensor in configuration file sends the networking signal, after the networking success, according to the time cycle transmission sampled signal of setting, regulates each sensor and main signal synchronized sampling, and receives packet.
Further, the wireless network topology structure of sensor and telegon adopts starshaped net topology, and each sensor all only communicates with telegon.
Embodiment one
See also shown in Figure 5, the CC2530 radio frequency single-chip microcomputer that embodiment of the utility model sensor, this embodiment sensor have adopted Texas Instruments to produce, this chip is integrated one 8051 single-chip microcomputer, AD D/A converter module and ZigBee module.
Signal conditioning circuit adopts the LTC2053 operational amplifier, amplification coefficient according to the quantitative relation definition signal amplifying circuit of its analog-to-digital conversion, vibration acceleration simulating signal after amplifying is inserted CC2530 radio frequency single-chip microcomputer, its 8051 built-in single-chip microcomputers are to sampling of 3 tunnel vibration signal synchronous and AD conversion, and sample frequency is 100Hz.
What be connected with the radio frequency output pin of CC2530 single-chip microcomputer is power amplification circuit, and the transmitting-receiving change-over circuit is according to transmitting gain or two kinds of patterns of receiving gain of the level control power amplifier of CC2530 reception/transmit pin.Signal after the amplification is realized communication by PCB formula antenna.
The small-sized solar battery is a power supply, after the voltage stabilizing through power supply chip TPS60210 and TPS60130, is respectively each chip and sensor power supply in the circuit.The operating voltage of CC2530 single-chip microcomputer is 3.3V, and the operating voltage of acceleration transducer is 5V, and the working current of sensor circuit is about 300mA.
Embodiment two
See also shown in Figure 6ly, an embodiment of the utility model telegon, telegon adopt the CC2530 single-chip microcomputer as core cell, and radio communication ZigBee module is identical with the sensor communication module.It is the CC2530 power supply that the 24V direct supply that the MC34063 power module is drawn pitch control cabinet is converted into the 3.3V power supply.
The CP2101 chip is the core cell of serial communication modular, is used to realize serial communication, reads the blower fan master information.Built-in 8051 single-chip microcomputers of CC2530 are controlled the IO mouth to SD card storage device storage data to data, and 8051 single-chip microcomputers regularly start the GPRS module and read data in the SD card, carry out remote data communication.
The method of testing of a kind of fan blade mode wireless monitoring device based on the ZigBee technology of the utility model is:
A, by the sensor satisfy the mode testing requirement is installed on blade, constitute wireless sensor network, measure the vibration acceleration of blade tip position by wireless sensor network, according to the cycle of setting, gather vibration acceleration signal.
B, sensor and telegon are by the networking of star topology mode, sensor utilizes the ZigBee wireless transmission protocol that signal data is transferred to telegon, telegon is by the low noise power amplification circuit and the bandwidth-limited circuit of ZigBee module, carry out filtering and low noise power amplification to the received signal, receive the data that all the sensors sends, these data are calculated the modal parameter of blade by Fourier transform.
The single-chip microcomputer of C, telegon is responsible for the data of sensor are screened, pack, calculated data according to the requirement of model analysis, and storage computation result and raw data, by the GPRS module of telegon, with the result of calculation in the SD storer and original data transmissions to the remote analysis terminal.
D, remote analysis terminal are carried out Fourier transform, integration, differential to original vibration acceleration data, obtain natural frequency by calculating frequency domain amplitude, and speed, the acceleration information of each monitoring point obtain Turbine Blade Vibration Mode Shape on each blade of overall treatment.
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 (7)
1. the fan blade mode wireless monitoring device based on the ZigBee technology is characterized in that comprising telegon and the more than one sensor that is fixedly mounted on the blade, wherein:
Sensor comprises single-chip microcomputer, the acceleration transducer that is connected with single-chip microcomputer by the analog-to-digital conversion circuit, the signal conditioning circuit that is connected with analog-to-digital conversion circuit, single-chip microcomputer, the ZigBee module that is connected with single-chip microcomputer, transmitting-receiving change-over circuit, power circuit, and the Anneta module that is connected with transmitting-receiving change-over circuit, ZigBee module;
Telegon comprises single-chip microcomputer, the ZigBee module that is connected with single-chip microcomputer, memory storage, serial communication modular, transmitting-receiving change-over circuit, power circuit, the GPRS module that is connected with single-chip microcomputer, storage device, and the Anneta module that is connected with transmitting-receiving change-over circuit, ZigBee module;
Sensor is connected by the ZigBee module communication with telegon.
2. the fan blade mode wireless monitoring device based on the ZigBee technology according to claim 1 is characterized in that:
The Anneta module of described sensor and telegon includes power amplification circuit and the antenna that is connected with power amplification circuit, impedance matching circuit.
3. the fan blade mode wireless monitoring device based on the ZigBee technology according to claim 1 is characterized in that:
The power circuit of described sensor comprises power supply, the mu balanced circuit that is connected with power supply, and the electric voltage observation circuit that is connected with power supply, single-chip microcomputer.
4. the fan blade mode wireless monitoring device based on the ZigBee technology according to claim 3 is characterized in that:
Described power supply adopts solar cell.
5. the fan blade mode wireless monitoring device based on the ZigBee technology according to claim 1 is characterized in that:
The power circuit of described telegon comprises power supply and the mu balanced circuit that is connected with power supply, single-chip microcomputer.
6. the fan blade mode wireless monitoring device based on the ZigBee technology according to claim 1 is characterized in that:
Described acceleration transducer adopts 3 low frequency capacitance acceleration transducers.
7. the fan blade mode wireless monitoring device based on the ZigBee technology according to claim 1 is characterized in that:
Be connected with low noise power amplification circuit and bandwidth-limited circuit in the ZigBee module of described telegon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041395 CN203101039U (en) | 2013-01-25 | 2013-01-25 | Blower fan blade modal wireless monitoring device based on ZigBee technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041395 CN203101039U (en) | 2013-01-25 | 2013-01-25 | Blower fan blade modal wireless monitoring device based on ZigBee technology |
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| Publication Number | Publication Date |
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| CN203101039U true CN203101039U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320041395 Expired - Lifetime CN203101039U (en) | 2013-01-25 | 2013-01-25 | Blower fan blade modal wireless monitoring device based on ZigBee technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063428A (en) * | 2013-01-25 | 2013-04-24 | 国电联合动力技术有限公司 | Wireless monitoring system and method for modal parameter of blade of fan |
| CN104121981A (en) * | 2014-08-15 | 2014-10-29 | 青岛科技大学 | Remote wireless vibration monitoring device applied to offshore jacket ocean platform |
| CN112882405A (en) * | 2020-12-25 | 2021-06-01 | 华电电力科学研究院有限公司 | Button type linear vibration motor based on Internet of things communication technology |
-
2013
- 2013-01-25 CN CN 201320041395 patent/CN203101039U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063428A (en) * | 2013-01-25 | 2013-04-24 | 国电联合动力技术有限公司 | Wireless monitoring system and method for modal parameter of blade of fan |
| CN103063428B (en) * | 2013-01-25 | 2015-10-28 | 国电联合动力技术有限公司 | A kind of wireless monitor system of fan blade modal parameter and method |
| CN104121981A (en) * | 2014-08-15 | 2014-10-29 | 青岛科技大学 | Remote wireless vibration monitoring device applied to offshore jacket ocean platform |
| CN112882405A (en) * | 2020-12-25 | 2021-06-01 | 华电电力科学研究院有限公司 | Button type linear vibration motor based on Internet of things communication technology |
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Granted publication date: 20130731 |
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