CN101702008B - Portable electric machine fault on-line diagnostic device - Google Patents
Portable electric machine fault on-line diagnostic device Download PDFInfo
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- CN101702008B CN101702008B CN2009102328984A CN200910232898A CN101702008B CN 101702008 B CN101702008 B CN 101702008B CN 2009102328984 A CN2009102328984 A CN 2009102328984A CN 200910232898 A CN200910232898 A CN 200910232898A CN 101702008 B CN101702008 B CN 101702008B
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Abstract
The invention relates to a portable electric machine fault on-line diagnostic device comprising a sensor, a signal conditioning module, an analog-to-digital conversion module, a digital signal processor and a human-computer interaction module, wherein the sensor serves as the input of the portable electric machine fault on-line diagnostic device to receive signals of an electric machine, the signal output end of the sensor is connected with the signal input end of the signal conditioning module; the signal output end of a conditioning circuit is connected with the signal input end of the analog-to-digital conversion module; the signal output end of the analog-to-digital conversion module is connected with the digital signal input end of the digital signal processor; the signal control end of the digital signal processor is connected with the signal control end of the human-computer interaction module, and the signal receiving and sending end of the human-computer interaction module serves as the signal receiving and sending end of the portable electric machine fault on-line diagnostic device and is connected with a touch screen. The portable electric machine fault on-line diagnostic device can make vibration detection on the electric machine and can also make detection in the electric aspect of the electric machine and has the advantages of small volume, light weight, portability, convenient use and the like.
Description
This case application is on the same day the invention not only to be applied for utility model patent but also apply for patent of invention, and invention and created name is a portable electric machine fault on-line diagnostic device.
Technical field
The present invention relates to a kind of motor carried out the portable instrument of fault diagnosis, especially adopted digital signal processing and embedded system technology.Specifically a kind of a large amount of portable electric machine fault on-line diagnostic devices that use the motor occasion such as power plant, steel mill, chemical plant that are widely used in.
Background technology
Motor is as power-equipment main in the industrial and agricultural production, and owing to it is simple in structure, cheap easy for installation and can be used for various complex operating environment and be widely used.Along with Chinese economic development and modernization of industry degree constantly improve, use the quantity of motor and the capacity of separate unit constantly to increase in the production system.Because the unaccelerated aging of motor; And the restriction that receives aspects such as motor manufacture level, operation and management level, repair quality, in recent years, large-size machine accident in service was more; Gently then whole production system can not normally be moved; Cause enormous economic loss, heavy then cause catastrophic failure and casualties, produce bad social influence.Therefore modern power industry has proposed increasingly high requirement to the security and the reliability of large-size machine equipment.
Most of enterprises generally adopt the equipment rotation system in order to prevent the generation of electrical fault.Adopt this system following two kinds of situations will certainly occur: on the one hand, intact motor removes maintenance waste great amount of manpower and material resources; On the other hand, motor can not in time be found not to breaking down in the phase by turns, and fault is constantly enlarged, and causes major accident, causes system to work normally.
Motor is carried out fault diagnosis, and carry out foreseeability maintenance system is the problem that academia and industry member emphasis are concerned about always.The fault of motor mainly contains rotor broken bar, off-centre, interturn in stator windings short circuit, three-phase imbalance, bearing, gear case etc.; Some characteristic quantities can appear on current of electric frequency spectrum or rumble spectrum after breaking down; The principle of fault diagnosis is come the detected characteristics amount through Digital Signal Processing exactly, thereby judges the fault that motor occurs.
Common electrical fault diagnostic device is divided into two types at present, and the one, detect electrical fault through detecting current spectrum, other one type is to detect electrical fault through detecting the motor oscillating frequency spectrum.Also there is not device can detect current spectrum and rumble spectrum simultaneously.Some product is claimed and can onlinely be detected in addition, in fact only plays the effect of an image data, to give host computer and accomplish and handle and analyze, and be not portable inline diagnosis truly.
Summary of the invention
The objective of the invention is to above-mentioned these deficiencies; A kind of power that utilizes digital signal processor and embedded system is proposed; Design a kind of ability and can detect current spectrum and rumble spectrum simultaneously; The independent all functions of accomplishing collection, processing and the analysis of data can not only structure be done vibration detection to motor and can be done the portable electric machine fault on-line diagnostic device of the detection of electric aspect to motor.
Technical scheme of the present invention is:
A kind of portable electric machine fault on-line diagnostic device; It comprises sensor, signal condition module, analog-to-digital conversion module, digital signal processor and human-computer interaction module; Described sensor receives by the signal of measured motor as the input of portable electric machine fault on-line diagnostic device; The signal output part of sensor links to each other with the signal input part of signal condition module; The signal output part of signal condition module links to each other with the signal input part of analog-to-digital conversion module; The signal output part of analog-to-digital conversion module links to each other with the digital signal input end of digital signal processor, and the control signal end of digital signal processor links to each other with the control signal end of human-computer interaction module, and the receiving and transmitting signal end of human-computer interaction module is connected with touch-screen as the receiving and transmitting signal end of portable electric machine fault on-line diagnostic device.
The present invention also comprises mixed-media network modules mixed-media, USB module, UART asynchronous serial port module, FLASH storer and SDRAM storer; Described mixed-media network modules mixed-media, USB module and UART asynchronous serial port module all link to each other with the respective signal end of human-computer interaction module, and the storage signal end of FLASH storer and SDRAM storer links to each other with the respective signal end of digital signal processor.
Sensor of the present invention is split-core type current sensor and vibrating speed sensors.
Device of the present invention also comprises the sampling clock module, and the control signal output ends of described digital signal processor is connected with the signal input end of sampling clock, and the signal output part of sampling clock connects with the corresponding clock signal input terminal of analog-to-digital conversion module.
Beneficial effect of the present invention:
The present invention can position electrical fault from many aspects.And very big increase has been arranged, for example can detect, can detect, also can turn-to-turn short circuit whether occur and detect or the like to the fault type of motor motor to motor off-centre to the disconnected bar of motor, really accomplish online, detect the portable electric machine fault on-line diagnostic device of electrical fault in real time.
Portable electric machine fault on-line diagnostic device of the present invention; Have and to do vibration detection and can do the detection of electric aspect motor motor; Have volume little, in light weight, portably use advantages such as convenient, be fit to a large amount of industries of motors of using such as electric power, petrochemical industry, metallurgy, coal and use.
Description of drawings
Fig. 1 is a theory diagram of the present invention.
Fig. 2 motor M F103 status monitoring and safety assessment system signal processing electricity theory diagram.
Fig. 3 motor M F103 status monitoring and the electric theory diagram of safety assessment system man-machine interface part.
Fig. 4 is a workflow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
As shown in Figure 1; A kind of portable electric machine fault on-line diagnostic device; It comprises sensor, signal condition module (model can be AD620), analog-to-digital conversion module (model can be AD7656), digital signal processor (model can be TMS320VC5502) and human-computer interaction module (model can be S3C2440); Described sensor receives by the signal of measured motor (model can be MF103) as the input of portable electric machine fault on-line diagnostic device; The signal output part of sensor links to each other with the signal input part of signal condition module; The signal output part of modulate circuit links to each other with the signal input part of analog-to-digital conversion module; The signal output part of analog-to-digital conversion module links to each other with the digital signal input end of digital signal processor, and the control signal end of digital signal processor links to each other with the control signal end of human-computer interaction module, and the receiving and transmitting signal end of human-computer interaction module is connected with touch-screen as the receiving and transmitting signal end of portable electric machine fault on-line diagnostic device.
The present invention also comprises mixed-media network modules mixed-media (model can be DM9000A), USB module, UART asynchronous serial port module, FLASH storer (model can be SST39VF160) and SDRAM storer (model can be HY5P124); Described mixed-media network modules mixed-media, USB module and UART asynchronous serial port module all link to each other with the respective signal end of human-computer interaction module, and the purpose that designs these interfaces is user-friendly to computer exactly and communicates by letter with this device.The storage signal end of FLASH storer and SDRAM storer links to each other with the respective signal end of digital signal processor.The program that designs in advance leaves among the FLASH in power down.When powering on, just can program be moved among the SDRAM and move.
Structure of the present invention comprises box body, be the digital signal processor of core with DSP and be human-computer interaction module, TFT touch-screen, connector, the first electric current clip style sensor, the second electric current clip style sensor and the vibrating speed sensors of processor with ARM; Wherein, Be that the digital signal processor of core and human-computer interaction module that ARM is processor are contained in the box body with DSP; The TFT touch-screen is contained on the panel of box body; The first electric current clip style sensor and the second electric current clip style sensor, vibrating speed sensors are connected with the signal input part IN that with DSP is signal condition module corresponding in the digital signal processor of core through connector; DSP is that the digital signal processor of core is connected with the data line of ARM chip through two eight same-phase three-state transceiver buffer chips by the HDI interface of DSP, and two 16 bus transceivers of ARM module warp are connected with the connector of TFT touch-screen.
The output signal of analog-to-digital conversion module is transferred to the dsp chip of digital signal processing module and analyzes and calculate.It is the human-computer interaction module of processor that data after the analytical calculation are transferred to ARM through transceiver, through transceiver the data that obtain has been shown on the TFT touch-screen again, and the TFT touch-screen is selected handset touch panel for use.Be connected human-computer interaction module and TFT touch-screen between transceiver select 16 bus transceivers of 2 74LVC162245 types for use.
As shown in Figure 2, be motor status monitoring and safety assessment system signal processing electricity theory diagram.
The three-phase alternating current signal output current analog quantity of sensor acquisition motor; The output of sensor links to each other with the signal input part of signal condition module (model can be AD620); The signal output part of signal condition module links to each other with the signal input part of analog-to-digital conversion module (model can be AD7656); The signal output part of analog-to-digital conversion module links to each other with the digital signal input end of digital signal processor (model can be TMS320VC5502); The control signal end of digital signal processor is connected with the signal input end of sampling clock module (model can be 74HC161); The signal output part of sampling clock connects with the corresponding clock signal input terminal of analog-to-digital conversion module; Another control signal end of digital signal processor links to each other with the control signal end of human-computer interaction module (model can be S3C2440); The receiving and transmitting signal end of human-computer interaction module is connected with the keyboard processing module as the receiving and transmitting signal end of portable electric machine fault on-line diagnostic device, and the input of keyboard processing module is connected with the signal output part of 8 * 8 keyboards, is connected with the house dog that prevention is crashed between the tie point of digital signal processor and human-computer interaction module; The storage signal end of described human-computer interaction module connects with corresponding storer; Human-computer interaction module general serial signal end is connected with general serial USB module, uses USB 1.1 agreements, carries out exchanges data through host computer interface and host computer; Human-computer interaction module the asynchronous serial signal end be connected with UART asynchronous serial port module, use the serial communication mode to carry out exchanges data through host computer communication interface and host computer.
Monitoring of Fig. 3 motor status and the electric theory diagram of safety assessment system man-machine interface part.
UART asynchronous serial port module of the present invention is two, and the USB module is three, is respectively usb host module, USB device 1 module and USB device 2 modules; Interpersonal interactive module with carry out data communication through two UART asynchronous serial ports and host computer; The receiving and transmitting signal end of human-computer interaction module is connected with touch-screen; The general serial signal end of human-computer interaction module connects with corresponding USB module respectively; The sound signal end of human-computer interaction module is connected with the signal end of audio processing modules (model can be UDA1341); Audio processing modules is connected with audio frequency, and human-computer interaction module is connected with the respective signal end of SD card, hummer, house dog, hard-disk interface IDE, mixed-media network modules mixed-media and storer.
During practical implementation:
The workflow of the software of device of the present invention is as shown in Figure 4.
When carrying out single-phase steady-state current test or single-phase starting testing current, use one second current clamp sensor, can detect faults such as motor fault of eccentricity and disconnected bar.
When carrying out the test of three-phase steady-state current, need to use three first current clamp sensors, can detect faults such as motor turn-to-turn short circuit, phase fault, ground short circuit and the phase failure.
During vibration-testing, vibrating speed sensors is placed on the horizontal direction of motor, can carries out the X folk prescription to vibration-testing.Two identical vibrating speed sensors of parameter are installed in the level and the vertical direction of machine simultaneously, can carry out XY associating vibration-testing, be mainly used in vibration displacement, vibration severity, the kurtosis index of measuring machine and draw orbit of shaft center.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (3)
1. portable electric machine fault on-line diagnostic device; It is characterized in that it comprises sensor, signal condition module, analog-to-digital conversion module, digital signal processor and human-computer interaction module; Described sensor receives by the signal of measured motor as the input of portable electric machine fault on-line diagnostic device; The signal output part of sensor links to each other with the signal input part of signal condition module; The signal output part of signal condition module links to each other with the signal input part of analog-to-digital conversion module; The signal output part of analog-to-digital conversion module links to each other with the digital signal input end of digital signal processor, and the control signal end of digital signal processor links to each other with the control signal end of human-computer interaction module, and the receiving and transmitting signal end of human-computer interaction module is connected with touch-screen as the receiving and transmitting signal end of portable electric machine fault on-line diagnostic device; It also comprises mixed-media network modules mixed-media, USB module, UART asynchronous serial port module, FLASH storer and SDRAM storer; Described mixed-media network modules mixed-media, USB module and UART asynchronous serial port module all link to each other with the respective signal end of human-computer interaction module, and the storage signal end of FLASH storer and SDRAM storer links to each other with the respective signal end of digital signal processor.
2. portable electric machine fault on-line diagnostic device according to claim 1 is characterized in that described sensor is split-core type current sensor and vibrating speed sensors.
3. portable electric machine fault on-line diagnostic device according to claim 1; It is characterized in that described device also comprises the sampling clock module; The control signal output ends of described digital signal processor is connected with the signal input end of sampling clock, and the signal output part of sampling clock connects with the corresponding clock signal input terminal of analog-to-digital conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102328984A CN101702008B (en) | 2009-10-21 | 2009-10-21 | Portable electric machine fault on-line diagnostic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102328984A CN101702008B (en) | 2009-10-21 | 2009-10-21 | Portable electric machine fault on-line diagnostic device |
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| Publication Number | Publication Date |
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| CN101702008A CN101702008A (en) | 2010-05-05 |
| CN101702008B true CN101702008B (en) | 2012-02-15 |
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| CN2009102328984A Expired - Fee Related CN101702008B (en) | 2009-10-21 | 2009-10-21 | Portable electric machine fault on-line diagnostic device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135444A (en) * | 2010-12-23 | 2011-07-27 | 天津大学 | Portable power mechanical-vibration measurement analyzer |
| CN102156262A (en) * | 2011-03-24 | 2011-08-17 | 西南交通大学 | On-line monitoring system and method of railway switch machine motor |
| CN102445343A (en) * | 2011-12-20 | 2012-05-09 | 东南大学 | Flush type bearing failure intelligent diagnosing device based on ARM (advanced RISC machine) and DSP (digital signal processor) |
| CN103335703B (en) * | 2013-06-26 | 2016-02-17 | 国家电网公司 | Based on the transformer On-line Vibration monitoring system of DSP |
| CN103675680B (en) * | 2013-12-18 | 2016-03-02 | 南车株洲电机有限公司 | A kind of locomotive motor optical-electricity encoder detector and detection method |
| CN106919285B (en) * | 2017-02-28 | 2021-01-15 | 北京小米移动软件有限公司 | Terminal |
| CN107091985A (en) * | 2017-04-21 | 2017-08-25 | 武汉科技大学 | Asynchronous Motor Rotor-Bar Fault diagnostic system and method |
| CN112415389B (en) * | 2020-11-23 | 2023-09-19 | 中国电力科学研究院有限公司 | Method and system for measuring stator faults of induction motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458533A (en) * | 2003-05-17 | 2003-11-26 | 杜玉晓 | Distributive intelligent motor detecting system |
| CN2677295Y (en) * | 2004-02-26 | 2005-02-09 | 中国人民解放军镇江船艇学院 | Portable monitoring, failure diagnostic instrument for ship electic machine operation state |
| CN201262588Y (en) * | 2008-10-10 | 2009-06-24 | 株洲南车时代电气股份有限公司 | Portable locomotive oscillation fault detector |
| CN201266832Y (en) * | 2008-08-14 | 2009-07-01 | 浙江省星炬电力电子有限公司 | Protection observe and control device for high-voltage motor |
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2009
- 2009-10-21 CN CN2009102328984A patent/CN101702008B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458533A (en) * | 2003-05-17 | 2003-11-26 | 杜玉晓 | Distributive intelligent motor detecting system |
| CN2677295Y (en) * | 2004-02-26 | 2005-02-09 | 中国人民解放军镇江船艇学院 | Portable monitoring, failure diagnostic instrument for ship electic machine operation state |
| CN201266832Y (en) * | 2008-08-14 | 2009-07-01 | 浙江省星炬电力电子有限公司 | Protection observe and control device for high-voltage motor |
| CN201262588Y (en) * | 2008-10-10 | 2009-06-24 | 株洲南车时代电气股份有限公司 | Portable locomotive oscillation fault detector |
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