CN204511784U - A kind of portable multi-function blower fan signal pickup assembly - Google Patents
A kind of portable multi-function blower fan signal pickup assembly Download PDFInfo
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- CN204511784U CN204511784U CN201520072416.4U CN201520072416U CN204511784U CN 204511784 U CN204511784 U CN 204511784U CN 201520072416 U CN201520072416 U CN 201520072416U CN 204511784 U CN204511784 U CN 204511784U
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- blower fan
- pickup assembly
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model provides a kind of portable multi-function blower fan signal pickup assembly, comprises sensor signal conditioning module, signal acquisition process module and data communication module; Sensor signal conditioning module carries out the pretreatment of sensor signal, and will through pretreated Signal transmissions to signal acquisition process module; Carry out the collection of the signal that sensor transmits and the collection of audio signal in signal acquisition process module, and the signal collected described portable multi-function blower fan signal pickup assembly by data communication module and Surveillance center carry out data communication.The oscillating signal of blower fan Transmitted chains part, tach signal, temperature signal are carried out synchronous acquisition with high-precision adc multichannel by Multi-function air blower signal pickup assembly of the present utility model, and transmitted by Ethernet or 3G network, improve the real-time of data transmission while improve acquisition precision.
Description
Technical field
The utility model relates to blower fan signal pickup assembly, is specifically related to portable multi-function blower fan signal pickup assembly.
Background technique
The wind field monitoring system of current application mainly adopts corresponding intrument to carry out detection to the state signal such as vibration, temperature, rotating speed of wind power equipment respectively and analyzes.Failure mode and the type of wind-driven generator are varied, only can not effectively detect wind power equipment health status with signals such as vibration, temperature, rotating speeds and identify exactly, if can increase the signals such as audio frequency collection and it is analyzed and together with special sensor interface, can make wind-driven generator condition monitoring and fault diagnosis more effectively and accurate.
And according to wind-driven generator practical operation situation, to every Fans install additional real-time monitoring system for state drop into and maintenance cost huge.According to Portable acquiring device, space hold and facilitate collecting device manage can be reduced, while customary and random blower fan health examination and fault diagnosis task can be realized, realize maintainability by force, the high performance-price ratio characteristic of less investment.
Therefore, those skilled in the art are devoted to provide a kind of novel blower fan signal pickup assembly.
Model utility content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of portable multi-function blower fan signal pickup assembly.
The utility model provides a kind of portable multi-function blower fan signal pickup assembly, comprises sensor signal conditioning module, signal acquisition process module and data communication module; The pretreatment of sensor signal is carried out in sensor signal conditioning module, and will through pretreated Signal transmissions extremely in signal acquisition process module; Carry out the collection of the signal that sensor transmits and the collection of audio signal in signal acquisition process module, and the signal collected described portable multi-function blower fan signal pickup assembly by data communication module and Surveillance center carry out data communication.
Sensor signal conditioning module: effect is the appropriate signals becoming to be applicable to ADC collection by sensor signals such as vibration, temperature, rotating speeds by the step conversion such as Isolation, amplification;
Signal acquisition process module: comprise CPU minimum system circuit, lithium cell circuit, ADC change-over circuit, CAN Acquisition Circuit, audio collection circuit, Zigbee transmission circuit.The effect of signal acquisition process module is by collection of simulant signal such as vibration, temperature, rotating speed, audio frequency and is converted to digital signal, selects to store or transmission for CPU.
Data communication module: comprise Ethernet transmission circuit, 3G communicating circuit.The communications conduit of the data communication module digital signal that to be vibration, temperature, rotating speed, audio frequency, video etc. return through signal acquisition process module acquires and control centre or attendant, can select ethernet communication or 3G two kinds of communication modes.
During work, the analogue signal that sensor signal conditioning module is sent and audio signal, deliver to signal acquisition process module, be converted into numerical information, and do pretreatment, then via data communication module transfer to control centre's process for further analysis and fault treatment.
The portable multi-function blower fan signal pickup assembly that the utility model provides can realize 4 road low frequencies and 4 road high-frequency vibration signal collections, 2 road temperature signal collections, 1 road tach signal gathers, and 2 road CAN gather, and multiple (in theory 254) Zigbee is from device signal collection.Compared with common blower fan signal pickup assembly, the utility model tool has the following advantages:
The oscillating signal of blower fan Transmitted chains part, tach signal, temperature signal are carried out synchronous acquisition with high-precision adc multichannel by this Multi-function air blower signal pickup assembly, and transmitted by Ethernet or 3G network, improve the real-time of data transmission while improve acquisition precision.
Increase audio collection, CAN communication interface, Zigbee host node module, for upper-position unit carry out data analysis, noise analysis, condition monitoring and fault diagnosis provide solid foundation.
This Multi-function air blower signal pickup assembly can adopt lithium cell independently-powered, can realize portable function.Customary and random blower fan health examination and fault diagnosis task can be realized for wind field, and by force maintainable, less investment.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the structural representation of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Fig. 2 is the fundamental diagram of the portable multi-function blower fan signal pickup assembly in the preferred embodiment of the present utility model of portable multi-function blower fan signal pickup assembly.
Fig. 3 is the oscillating signal conditioning circuit fundamental diagram of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Fig. 4 is the spindle speed measurement circuit working schematic diagram of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Fig. 5 is the temperature measuring circuit working principle of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Fig. 6 is the audio signal sample schematic diagram of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Fig. 7 is Zigbee and the CPU connection block diagram of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Fig. 8 is the CAN interface communication circuitry schematic diagram of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Fig. 9 is the internal structure planimetric map of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Figure 10 is the front elevation of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Figure 11 is the back elevation of the portable multi-function blower fan signal pickup assembly in preferred embodiment of the present utility model.
Embodiment
Fig. 1 is the structural representation of the portable multi-function blower fan signal pickup assembly in the utility model preferred embodiment.The utility model provides a kind of portable multi-function blower fan signal pickup assembly, comprises sensor signal conditioning module, signal acquisition process module, data communication module; Sensor signal conditioning module carries out the pretreatment of sensor signal, and will through pretreated Signal transmissions to signal acquisition process module; The signal transmitted sensor in signal acquisition process module gathers and gathers audio signal, and the signal collected described portable multi-function blower fan signal pickup assembly by data communication module and Surveillance center carry out data communication.
Further, sensor signal conditioning module comprises: oscillating signal conditioning circuit, temperature signal regulation circuit, tach signal conditioning circuit; In oscillating signal conditioning circuit, the piezoelectric acceleration sensor of in-built IC selected by vibration signals collecting sensor, and interface is BNC socket; Adopt positive voltage voltage stabilizer to be that the piezoelectric acceleration sensor of 4mA [constant to in-built IC of core is powered, power line and signaling line multiplexing, namely power line is exactly signal transmssion line; Adopt operational amplifier to make voltage follower, isolation and stable effect are played to the output signal of the piezoelectric acceleration sensor of in-built IC; The output voltage of the piezoelectric acceleration sensor of in-built IC is greater than the input voltage upper limit of ADC, selects the output voltage of instrumentation amplifier to vibration transducer to do convergent-divergent process; With low-pass filter, the oscillating signal in 1KHz characteristic frequency section is chosen; In tach signal conditioning circuit, proximity switch is adopted to do the sensor of interest of tach signal collection, adopt a triode, the output line of proximity switch is connected with transistor base, ADC input end is in parallel with transistor collector with+3.3V, the output voltage amplitude of proximity switch is regulated with the input voltage upper limit making its applicable CPU; In temperature signal regulation circuit, four-wire system thermal resistance sensor selected by temperature signal collection sensor, adopts constant-current source type temperature measurement circuit; Produce 1mA [constant with positive voltage voltage stabilizer, produce pressure drop when electric current flows through thermal resistor, by operational amplifier, this faint pressure drop signal is amplified 10 times, export the voltage signal being applicable to ADC and gathering.
Further, signal acquisition process module comprises the minimum system circuit of CPU, the ADC conversion processing circuit of vibration, temperature, tach signal, audio collection circuit.
(1) CPU minimum system circuit
Cpu chip need be selected to support IEEE 1588v2 agreement, 10/100M Ethernet interface; There is the special phaselocked loop of audio frequency and full duplex I2S; With functions such as SPI, I2C, CAN interfaces;
(2) CAN interface communication circuitry
Selecting CAN driver chip, is the interface between CAN protocol controller and physical bus;
(3) ADC conversion processing circuit
Adopt sampling precision to be more than 16 or 16, sampling rate is the multichannel ADC of more than 100KSPS;
(4) audio collection circuit
Select audio processing chip collecting treatment sound signal; Audio processing chip is integrated with stereophony microphone differential preamplifier, loudspeaker and headphone driver, difference or stereo line output driver; Audio processing chip is connected with the I2S interface of CPU, and portable multi-function blower fan signal pickup assembly can carry out recording simultaneously, playback process;
(5) Zigbee transmission circuit
Select ready-made Zigbee wireless communication module, as host node.
Further, described data communication module comprises: Ethernet transmission circuit and 3G communicating circuit; Adopt the RJ45 network interface of integrated network transformer HR911105A, be with 2 LED lights; DM9161AEP chip is connected with the Ethernet interface of CPU and carries out transceiving data; 3G communicating circuit selects Huawei MU509 module.
Fig. 2 is the portable multi-function blower fan signal pickup assembly fundamental diagram in the utility model preferred embodiment.This portable multi-function blower fan signal pickup assembly can gather vibration, temperature, rotating speed, audio signal.Sensor signal adjusts circuit the analogue signal of vibration, temperature, rotating speed to be converted to the signal of applicable ADC collection through signal condition, and these analogue signals are converted to digital signal by ADC afterwards.Vibration, temperature, the digital signal of rotating speed after ADC conversion can store at 10G CPU Control Unit with audio signal and communicate with Surveillance center by 10G CPU Control Unit; 10G CPU Control Unit leaves CAN interface and Zigbee communication function, can communicate with the sensor being equipped with these interfaces.Data transfer mode can select Ethernet and 3G two kinds of communication modes, to meet site environment demand complicated and changeable.
Fig. 3 is the oscillating signal conditioning circuit fundamental diagram of the portable multi-function blower fan signal pickup assembly in the utility model preferred embodiment.The collection of oscillating signal is by the piezoelectric acceleration sensor collection of in-built IC, and normal operation of sensor needs 4mA constant current source power supply, adopts positive voltage voltage stabilizer U6 to do the design of [constant part.In order to reduce the loss of oscillating signal and isolate rear class amplification circuit to the interference of oscillating signal, need to utilize operational amplifier U3 to carry out the design of voltage follower.Because using the cause of [constant, the DC offset voltage of output voltage superposition about the 10V of in-built IC piezoelectric acceleration sensor, this output signal can not directly be gathered by A/D, of instrumentation amplifier U1, output voltage is made to the adjustment process of convergent-divergent and zeroing, and with low-pass filter U4, low-pass filtering treatment is done to the oscillating signal after voltage-regulation, the interference that it comprises with filtering and noise.Oscillating signal conditioning circuit output signal enters one of ADC change-over circuit eight acquisition channels.
Fig. 4 is the spindle speed measurement circuit working schematic diagram of the portable multi-function blower fan signal pickup assembly in the utility model preferred embodiment.The method of spindle speed measurement has a lot, as used photoelectric sensor, the Measuring Frequency Method of Digit Velocity, the cycle test method of Digit Velocity, because spindle speed is comparatively slow, uses the cycle test method effect of Digit Velocity best through comparing.Speed probe (proximity switch) is selected to obtain tach signal, but the switching value low and high level that proximity switch speed probe exports is+24V and 0V respectively can not, directly as the input signal source of CPU, need be+3.3V and 0V by voltage-regulation with triode Q1.10G CPU Control Unit is connected with the voltage regulator circuit of speed probe with GPIO mouth (ZS), is reached the effect of statistics rotating speed by statistics high level or low level.
Fig. 5 is the temperature measuring circuit working principle of the portable multi-function blower fan signal pickup assembly in the utility model preferred embodiment.The utility model selects thermal resistance temperature sensor as the sensor of interest of temperature acquisition, and the pressure drop produced by measuring thermal resistor carrys out the change of measuring tempeature.And consider the factor reducing measurement error, adopt four-wire system [constant method of measurement, now, the pressure drop on thermal resistor is only relevant with the resistance change of self, selects operational amplifier U40 to power to thermal resistance temperature sensor as 1mA [constant here.The measuring range of measuring tempeature needed for blower fan system is-50 DEG C to 200 DEG C, the resistance range of thermal resistor is 80.4 Ω to 175.86 Ω, show that thermal resistor output voltage is 80.4mV-175.86mV as calculated, output voltage signal is very little, amplifies process with operational amplifier U43 to output voltage.In order to improve the precision of sampled value, need to amplify after voltage signal through its higher harmonics comprised of single order RC low-pass filtering treatment or other interference, noise.And do voltage stabilizing process with reference diode D2.10G CPU Control Unit to output signal with temperature measuring circuit with ADC pin (WD1, WD2) in CPU sheet and is connected.
Fig. 6 is the audio signal sample schematic diagram of the portable multi-function blower fan signal pickup assembly in the utility model preferred embodiment.Audio processing chip, has stereophone driver output and speaker drive exports.By SPI and I between CPU and audio processing chip
2s interface connects.
SPI interface is for configuring the working state (volume, put and earphone switching, Balance route etc.) of audio processing chip outward.
I
2s interface is used for transmission tone frequency data stream.
Fig. 7 is Zigbee and the CPU connection block diagram of the portable multi-function blower fan signal pickup assembly in the utility model preferred embodiment.CPU carries out data communication by SPI serial line interface and Zigbee module, and CPU carries out feature operation by GPIO to Zigbee module.
Fig. 8 is the CAN interface communication circuitry schematic diagram of the portable multi-function blower fan signal pickup assembly in the utility model preferred embodiment.CPU, by CAN driver chip U1, is the interface between CAN protocol controller and physical bus, for bus provides differential sending performance, for CAN controller provides differential receptivity.
Fig. 9 is the portable multi-function blower fan signal pickup assembly internal structure planimetric map in the utility model preferred embodiment, and 1 ~ 8 is vibration transducer 8 road interface; 9,10 audio input output interface is respectively; 11 is 3G module; 12 is Zigbee host node module; 13 is 2 road CAN interfaces; 14 is speed probe interface; 15,16 is 2 road temperature sensor interfaces; 17 is externally fed power interface; 18,19 is ethernet network interface.
Figure 10 is the portable multi-function blower fan signal pickup assembly front elevation in the utility model preferred embodiment.1 ~ 8 is vibration transducer 8 road interface; 9,10 audio input output interface is respectively.
Figure 11 is the portable multi-function blower fan signal pickup assembly back elevation in the utility model preferred embodiment.13 is 2 road CAN interfaces; 14 is speed probe interface; 15,16 is 2 road temperature sensor interfaces; 17 is externally fed power interface; 18,19 is ethernet network interface.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that the ordinary skill of related domain just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technician in the art according to design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (1)
1. a portable multi-function blower fan signal pickup assembly, is characterized in that, comprises sensor signal conditioning module, signal acquisition process module and data communication module; Sensor signal conditioning module carries out the pretreatment of sensor signal, and will through pretreated Signal transmissions to signal acquisition process module; Carry out the collection of the signal that sensor transmits and the collection of audio signal in signal acquisition process module, and the signal collected described portable multi-function blower fan signal pickup assembly by data communication module and Surveillance center carry out data communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520072416.4U CN204511784U (en) | 2015-02-02 | 2015-02-02 | A kind of portable multi-function blower fan signal pickup assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520072416.4U CN204511784U (en) | 2015-02-02 | 2015-02-02 | A kind of portable multi-function blower fan signal pickup assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204511784U true CN204511784U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520072416.4U Expired - Fee Related CN204511784U (en) | 2015-02-02 | 2015-02-02 | A kind of portable multi-function blower fan signal pickup assembly |
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| Country | Link |
|---|---|
| CN (1) | CN204511784U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291357A (en) * | 2016-08-01 | 2017-01-04 | 哈尔滨工业大学 | Multichannel buffer data acquisition system for fan monitor |
| CN106525318A (en) * | 2016-12-16 | 2017-03-22 | 山东金洲科瑞节能科技有限公司 | Bus-type pressure measuring device |
-
2015
- 2015-02-02 CN CN201520072416.4U patent/CN204511784U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291357A (en) * | 2016-08-01 | 2017-01-04 | 哈尔滨工业大学 | Multichannel buffer data acquisition system for fan monitor |
| CN106291357B (en) * | 2016-08-01 | 2019-10-08 | 哈尔滨工业大学 | Multichannel buffer data acquisition system for fan monitor |
| CN106525318A (en) * | 2016-12-16 | 2017-03-22 | 山东金洲科瑞节能科技有限公司 | Bus-type pressure measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20160202 |