CN101776521A - Fixed rotating speed trigger non-steady state signal acquisition device of mechanical rotation system - Google Patents
Fixed rotating speed trigger non-steady state signal acquisition device of mechanical rotation system Download PDFInfo
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- CN101776521A CN101776521A CN201019102002A CN201019102002A CN101776521A CN 101776521 A CN101776521 A CN 101776521A CN 201019102002 A CN201019102002 A CN 201019102002A CN 201019102002 A CN201019102002 A CN 201019102002A CN 101776521 A CN101776521 A CN 101776521A
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- rotating speed
- mechanical rotation
- steady state
- acquisition device
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Abstract
The invention discloses a fixed rotating speed trigger non-steady state signal acquisition device of a mechanical rotation system; a rotating speed sensor circuit is connected with a micro processor circuit through a pulse shaping circuit; a vibration sensor circuit is connected with the micro processor circuit through a vibration sensor signal processing circuit; the micro processor circuit is connected with an interface circuit of a computer; the rotating speed sensor circuit and the vibration sensor circuit output the detected vibration and rotating speed signals of the mechanical rotation system through the pulse shaping circuit and the vibration sensor signal processing circuit; and the output signal of the micro processor circuit is input to the computer through the interface circuit of the computer. The fixed rotating speed trigger non-steady state signal acquisition device of the mechanical rotation system has the advantages of monitoring the operation speed on the equipment of the rotation system in real time by installing the sensors on the equipment of the mechanical rotation system, capability of accurately measuring the vibration signal of the set rotating speed under a non-steady state working conditions on the equipment of the mechanical rotation system, and facilitating the analysis and the fault diagnosis to the operation status of the equipment.
Description
Technical field
The present invention relates to a kind of signal pickup assembly; What particularly relate to a kind of mechanical rotation system decides the rotating speed non-steady state signal acquisition device.
Background technology
There is a class signal to have tangible transient state character in the engineering, for example: the signal of works explosion time, signal when machine part is subjected to temporary impact, signal during rocket launching, structural response signal and various pulse type signal when seismic signal and earthquake, strike note signal or the like all belongs to this class transient signal.This class signal has very strong time variation, and is short time interval.
Along with industrial development, improving constantly of equipment modernization level, performance requirement to equipment is also more and more higher, therefore, equipment running status and fault diagnosis also become the focus that people pay close attention to, vibration signal has contained the information of abundant equipment running status, and the sensitivity of reflection state variation is higher.
In the acceleration or moderating process of mechanical rotation system, each matching pair of mechanical system is in the unstable state foment usually, and its percussive action is bigger during than steady-state operation, and vibration performance is more more obvious than performance under the plateau.For this reason, the non-steady state signal acquisition device of a kind of mechanical rotation of active demand system on the market.
Summary of the invention
Technical matters to be solved by this invention is, what a kind of mechanical rotation system was provided decides the rotating speed non-steady state signal acquisition device.
The technical solution adopted in the present invention is: a kind of mechanical rotation system decides the rotating speed non-steady state signal acquisition device, comprise, the speed probe circuit, pulse shaping circuit, the vibration transducer circuit, the vibration sensor signal treatment circuit, microcontroller circuit and computing machine, described speed probe circuit is connected with described microcontroller circuit by described pulse shaping circuit, described vibration transducer circuit is connected with described microcontroller circuit by described vibration sensor signal treatment circuit, described microcontroller circuit is connected with described computer interface circuits, described speed probe circuit and described vibration transducer circuit are with the vibration and the tach signal of the mechanical rotation system of detection, export to described microcontroller circuit by described pulse shaping circuit and described vibration sensor signal treatment circuit, the output signal of described microcontroller circuit inputs to described computing machine by described computer interface circuits.
Described speed probe circuit comprises, speed probe and interface circuit thereof, and described vibration transducer circuit comprises, vibration transducer and interface circuit thereof, described pulse shaping circuit comprise, voltage comparator and amplitude limit current limliting shaping circuit.
Speed probe is magneto-electric or Hall-type or electro-optical pickoff, and when described speed probe circuit adopted magnetoelectric sensor, described shaping circuit adopted the zero-crossing comparator circuit.
The signal processing circuit of described vibration transducer circuit and described vibration transducer adopts 1 to 8 passage according to the analog input channel number of described microprocessor.
The invention has the beneficial effects as follows: by sensor installation on the equipment of mechanical rotation system, running speed on the equipment of real-time monitoring rotary system, can measure exactly on the equipment of rotary system and set the vibration signal of rotating speed under the unstable state operating mode, be convenient to equipment running status is analyzed and fault diagnosis.
Description of drawings
Fig. 1 be the mechanical rotation system decide commentaries on classics non-steady state signal acquisition device composition frame chart.
Among the figure:
10: speed probe circuit 20: pulse shaping circuit
30: vibration transducer circuit 40: the vibration sensor signal treatment circuit
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 be apparatus of the present invention mechanical rotation system decide rotating speed non-steady state signal acquisition device composition frame chart.As shown in Figure 1, mechanical rotation of the present invention system decides the commentaries on classics non-steady state signal acquisition device, comprise, speed probe circuit 10, pulse shaping circuit 20, vibration transducer circuit 30, vibration sensor signal treatment circuit 40, microcontroller circuit and computing machine, speed probe circuit 10 is connected with microcontroller circuit by pulse shaping circuit 20, vibration transducer circuit 30 is by vibration sensor signal treatment circuit 40 and microcontroller circuit, microcontroller circuit is connected with computer interface circuits, speed probe circuit 10 and vibration transducer circuit 30, vibration and tach signal with the mechanical rotation system that detects, export to microcontroller circuit by pulse shaping circuit 20 and vibration sensor signal treatment circuit 40, the output signal of microcontroller circuit inputs to computing machine by computer interface circuits.Speed probe circuit 10 comprises, speed probe and interface circuit thereof, and vibration transducer circuit 30 comprises, vibration transducer and interface circuit thereof, pulse shaping circuit 20 comprise, voltage comparator and amplitude limit current limliting shaping circuit.Speed probe is used to monitor the mechanical system rotational speed, and vibration transducer is used for the measuring vibrations signal.
Speed probe can be magneto-electric, Hall-type or electro-optical pickoff, by the microprocessor collection.When the mechanical rotation system reaches predetermined rotating speed, the enabling signal collection, computer system is finished by interface microprocessor is provided with, work such as Data Receiving and transmission.When deciding rotating speed triggering unstable state system works, speed probe monitoring mechanical system running speed.
The signal processing circuit 40 of vibration transducer 30 and vibration transducer can be a multichannel, according to determining for the analog input channel number of microprocessor, can extend to 8 the tunnel as the C8051F021 microprocessor is the highest.The interface of microprocessor and computing machine can be forms such as USB, serial ports, and computing machine can be provided with microprocessor by interface, comprises initial rotating speed, termination rotating speed, sample frequency, sampling channel selection and mode of operation etc.
Vibration transducer adopts connector to insert voltage follower, here, is example with the PCB vibration transducer, adopts constant current source and voltage follower to carry out signal Processing, and the signal after the processing inserts the analog quantity input interface of the microprocessor that has mould/number conversion.
Speed probe passes through shaping circuit, for magnetoelectric sensor, shaping circuit adopts voltage comparator and pressure limiting amplitude limiter circuit, the original signal of magnetoelectric sensor collection is converted to square-wave signal, external interrupt interface by microprocessor is sent into microprocessor, microprocessor calculates actual tachometer value by the frequency of the square-wave signal of collection external interrupt, when the monitoring rotation speed value reaches the rotating speed of setting, microprocessor control A/D converter begins data acquisition, when the monitoring rotation speed value reaches the rotating speed that stops to sample, microprocessor control A/D converter stop signal is gathered, and with the signal data storage of gathering, the communication interface by microprocessor and computing machine is sent to computing machine.
Three kinds of mode of operations of apparatus of the present invention are as follows:
1, fixed rotating speed triggers
Trigger tach signal by signals collecting of computer settings and give microprocessor, microprocessor control speed probe automat tool system rotating speed.When the arrival of microprocessor detection tach signal presetted rotating speed, microprocessor control vibration transducer began to gather vibration signal, and stores and export.
2, the signals collecting of accelerator
By initial rotating speed of computer settings microprocessor and termination rotating speed, microprocessor control is carried out anxious acceleration to mechanical gyro unit, speed probe begins monitoring rotation speed, and when rotating speed reached the initial rotating speed of microprocessor setting, microprocessor control began to gather vibration sensor signal; When the rotating speed of microprocessor monitors mechanical system reached the termination rotating speed, microprocessor was controlled automatic stop signal collection, and image data is stored and exported.
3, the signals collecting of moderating process
Begin the initial rotating speed of acquired signal and stop rotating speed by computer settings microprocessor signals acquisition system.Mechanical system accelerated at a high speed and steady running after, mechanical system slowed down suddenly, speed probe begins monitoring rotation speed, when rotating speed reaches when preestablishing initial rotating speed, microprocessor begins to gather the signal of vibration transducer, when monitoring rotation speed reaches when stopping rotating speed, stop signal collection automatically, and the signal data of gathering stored and export.
The present invention is easy to realize on-line monitoring and real-time diagnosis.By sensor installation on the equipment of mechanical rotation system, monitor the running speed on the mechanical rotary system equipment in real time, can measure the vibration signal of equipment under the unstable state operating mode of setting rotating speed of rotary system exactly, be convenient to equipment running status is analyzed and fault diagnosis.
Simultaneously, high development along with computer technology, the brand-new technology means are provided for setting up equipment condition monitoring and fault diagnosis equipment, it organically combines together by computer hardware resource and instrument hardware, thereby the measurement of computing machine strong calculation and processing ability and instrument hardware, control ability are combined, realize vibration signals collecting brand-new decide the rotating speed non-steady state signal acquisition device.
It is worthy of note; protection scope of the present invention is not limited to above-mentioned instantiation mode, according to basic fundamental design of the present invention, as long as those of ordinary skills need not through creative work; the embodiment that can associate all belongs to protection scope of the present invention.
Claims (4)
1. a mechanical rotation system decides the rotating speed non-steady state signal acquisition device, it is characterized in that, comprise, speed probe circuit (10), pulse shaping circuit (20), vibration transducer circuit (30), vibration sensor signal treatment circuit (40), microcontroller circuit and computing machine, described speed probe circuit (10) is connected with described microcontroller circuit by described pulse shaping circuit (20), described vibration transducer circuit (30) is connected with described microcontroller circuit by described vibration sensor signal treatment circuit (40), described microcontroller circuit is connected with described computer interface circuits, described speed probe circuit (10) and described vibration transducer circuit are with the vibration and the tach signal of the mechanical rotation system of detection, export to described microcontroller circuit by described pulse shaping circuit (20) and described vibration sensor signal treatment circuit (40), the output signal of described microcontroller circuit inputs to described computing machine by described computer interface circuits.
2. mechanical rotation according to claim 1 system decides the rotating speed non-steady state signal acquisition device, it is characterized in that, described speed probe circuit (10), comprise speed probe and interface circuit thereof, described vibration transducer circuit (30), comprise, vibration transducer and interface circuit thereof, described pulse shaping circuit (20) comprise, voltage comparator and amplitude limit current limliting shaping circuit.
3. mechanical rotation according to claim 1 system decides the rotating speed non-steady state signal acquisition device, it is characterized in that, speed probe is magneto-electric or Hall-type or electro-optical pickoff, when described speed probe circuit adopted magnetoelectric sensor, described shaping circuit adopted the zero-crossing comparator circuit.
4. decide the rotating speed non-steady state signal acquisition device according to claim 1 or 2 or 3 described mechanical rotation systems, it is characterized in that the signal processing circuit (40) of described vibration transducer circuit (20) and described vibration transducer adopts 1 to 8 passage according to the analog input channel number of described microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201019102002A CN101776521A (en) | 2010-02-08 | 2010-02-08 | Fixed rotating speed trigger non-steady state signal acquisition device of mechanical rotation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201019102002A CN101776521A (en) | 2010-02-08 | 2010-02-08 | Fixed rotating speed trigger non-steady state signal acquisition device of mechanical rotation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101776521A true CN101776521A (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201019102002A Pending CN101776521A (en) | 2010-02-08 | 2010-02-08 | Fixed rotating speed trigger non-steady state signal acquisition device of mechanical rotation system |
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| Country | Link |
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| CN (1) | CN101776521A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539813A (en) * | 2010-12-14 | 2012-07-04 | 江阴市华恒仪表有限公司 | Monitoring instrument circuit |
| CN103869094A (en) * | 2012-12-14 | 2014-06-18 | 中国核动力研究设计院 | Main pump rotation speed measurement signal processing method |
| CN104823035A (en) * | 2012-11-29 | 2015-08-05 | 株式会社佐竹 | Monitoring device for rotary machine |
-
2010
- 2010-02-08 CN CN201019102002A patent/CN101776521A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539813A (en) * | 2010-12-14 | 2012-07-04 | 江阴市华恒仪表有限公司 | Monitoring instrument circuit |
| CN104823035A (en) * | 2012-11-29 | 2015-08-05 | 株式会社佐竹 | Monitoring device for rotary machine |
| CN103869094A (en) * | 2012-12-14 | 2014-06-18 | 中国核动力研究设计院 | Main pump rotation speed measurement signal processing method |
| CN103869094B (en) * | 2012-12-14 | 2017-07-18 | 中国核动力研究设计院 | A kind of main pump tachometric survey signal processing method |
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Open date: 20100714 |