CN201004269Y - Portable shift and acceleration vibration signal testing system - Google Patents
Portable shift and acceleration vibration signal testing system Download PDFInfo
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- CN201004269Y CN201004269Y CNU2006200526234U CN200620052623U CN201004269Y CN 201004269 Y CN201004269 Y CN 201004269Y CN U2006200526234 U CNU2006200526234 U CN U2006200526234U CN 200620052623 U CN200620052623 U CN 200620052623U CN 201004269 Y CN201004269 Y CN 201004269Y
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Abstract
The utility model relates to a portable displacement and acceleration vibration signal testing system, which consists of a front processor, a center processor and a rear processor. The front processor comprises a plurality of integrated displacement transducers, a plurality integrated acceleration transducers and chargers; the center processor comprises a filtering, integral, demodulation, mixing resisting and A/D switching circuit, a USB interface chip, an I/O expanding circuit, a power supply interface and a charge circuit; the rear processor comprises notebook computer and a data collecting and analyzing unit. Wherein, the center processor is also internally provided with a front processor dedicated interlayer; and the center processor is provided with a rear processor fixing rack. The utility model adopts highly integrated portable technical proposal to overcome the defect that the mutual independence of the components causes inconvenient using, and solve the problem that the common used vibration signal testing system has single function and the multi-path signal picking needs to collocate a plurality of dedicated processing circuit cases and the problem of the external power wire, which is widely applicable for the wild operation and teaching experiment.
Description
Technical field
The utility model relates to input and analytic system, especially a kind of multi-functional, high integrated portable displacement and acceleration vibration signal test macro.
Background technology
Technology for mechanical fault diagnosis is to the business equipment safe operation, produces and normally carry out most important guarantee.And be general, the most effective most widely used support method in the safety in production based on the diagnostic techniques of vibration performance analysis.Early stage vibration analysis is to adopt special-purpose instrument, and these instruments are because the high performance processor of the big needs of signal analysis and processing operand, and this instrumentation not only costs an arm and a leg, and function is solidified, poor, the upgrading difficulty of versatility.Along with improvement of computer science, detect development with analytic system based on the vibration signal of microcomputer, they are because many characteristics such as cost is low, function is many, upgrading is fast, versatility is good, so also more and more obvious in vibration diagnosis The Application of Technology trend.But devices such as the data acquisition unit of this type systematic, front processor, power supply are independent separately at present, and the total system ingredient is many and big, uses very inconvenient; The system that the mid-processor of part is integrated, its preprocessor, mid-processor, post processor are independent separately, are not easy to carry.
Summary of the invention
At above-mentioned situation, the purpose of this utility model be to provide a kind of and be easy to carry, easy to use, the portable displacement and the acceleration vibration signal test macro that are particularly suitable for execute-in-place.
To achieve these goals, a kind of portable displacement and acceleration vibration signal test macro, it is mainly by preprocessor, mid-processor and post processor constitute, described preprocessor comprises and is provided with a plurality of integrated form displacement transducers, a plurality of integrated form acceleration transducers and charger, described mid-processor comprises and is provided with multichannel displacement transducer interface, the Multichannel Acceleration sensor interface, filtering circuit, integrating circuit, demodulator circuit, anti-mixting circuit, the A/D change-over circuit, the USB interface chip, I/O expanded circuit and power interface, charging circuit, rechargeable battery, the DC-DC mu balanced circuit, described post processor mainly comprises a notebook computer and is arranged at the interior data collection and analysis unit of notebook computer, also be provided with the special-purpose interlayer of preprocessor in the described mid-processor, mid-processor is provided with the post processor fixed mount.
Powerful in order to realize, be easy to carry, easy to use, the good and structure optimization of versatility, its further step is:
The special-purpose interlayer of described preprocessor is respectively the sensor-specific interlayer and the circuit collection is adorned special-purpose interlayer.
But the rear portion of described mid-processor is provided with the drop front of switch.
Described post processor fixed mount connects firmly through the movable button button of mid-processor left and right sides face.
Described data collection and analysis unit comprises that data acquisition, Filtering Processing, amplitude domain analysis, time-domain analysis, frequency-domain analysis, time-frequency drawing, model analysis, system withdraw from subelement.
The utility model adopts highly integrated portable scheme, overcome and separately between each device caused awkward defective, solve vibration signal detection system function singleness commonly used, multiple signals and picked up and need many dedicated processes circuit box of configuration and external power supply, caused the very problem of inconvenience of operation of using.The utlity model has that compact conformation, volume are little, in light weight, easy to carry, the scene need not characteristics such as power supply, realized multi-functional, high precision, testing goal efficiently easy for operation.The utility model can be widely used in field work and education experiment.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is a structural principle block scheme of the present utility model.
Fig. 2 is a data collection and analysis cellular construction block diagram of the present utility model.
Fig. 3 is the front view of the mid-processor of the utility model.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is that the A of Fig. 3 is to view.
Fig. 6 is the movable button button of Fig. 3 and the enlarged diagram that is connected of post processor fixed mount.
Among the figure 1, preprocessor, 11, the special-purpose interlayer of preprocessor, 2, mid-processor, 21, the sensor-specific interlayer, 22, the circuit collection adorns special-purpose interlayer, 23, drop front, 24, the movable button button, 3, post processor, 31, the post processor fixed mount.
Embodiment
1-6 in conjunction with the accompanying drawings, portable displacement of the present utility model and acceleration vibration signal test macro comprise: preprocessor 1, mid-processor 2 and post processor 3, preprocessor 1 comprises and is provided with a plurality of integrated form displacement transducers, a plurality of integrated form acceleration transducers and charger, each sensor is connected to the sensor interface of mid-processor 2 by signal wire, by this interface and the filtering circuit that is arranged in the mid-processor, integrating circuit, demodulator circuit, anti-mixting circuit, the A/D change-over circuit is electrically connected mutually, charger is connected to the power interface of mid-processor 2, by this interface and the charging circuit that is arranged in the mid-processor, rechargeable battery, the DC-DC mu balanced circuit is electrically connected mutually.
Referring to accompanying drawing 3-6, mid-processor 2 comprises and is provided with multichannel displacement transducer interface, Multichannel Acceleration sensor interface, filtering circuit, integrating circuit, demodulator circuit, anti-mixting circuit, A/D change-over circuit, USB interface chip, I/O expanded circuit and power interface, charging circuit, rechargeable battery, DC-DC mu balanced circuit; Be provided with the special-purpose interlayer 11 of preprocessor in it, comprise that sensor-specific interlayer 21 and circuit collection adorn special-purpose interlayer 22, separate by dividing plate between two-layer, sensor-specific interlayer 21 is used to put a plurality of integrated form displacement transducers and a plurality of integrated form acceleration transducer, and the circuit collection is adorned the integrated circuit of special-purpose interlayer 22 and mainly is made up of filtering circuit, integrating circuit, demodulator circuit, anti-mixting circuit, A/D change-over circuit, USB interface chip, I/O expanded circuit, charging circuit, rechargeable battery, DC-DC mu balanced circuit; But its rear portion is provided with the drop front 23 of switch, so as sensor pick and place and sensor and sensor interface between be connected; Its left and right sides face is provided with the movable button button 24 in order to the post processor fixed mount 31 that is connected, movable button button 24 is fastened by a spring with the side and is linked to each other, post processor fixed mount 31 also is connected by a spring hitch with movable button button 24, spring hitch is a solid shaft outer casing spring structure, and its connection diagram is seen accompanying drawing 6; Mid-processor 2 also is provided with the displacement transducer interface corresponding with the integrated form displacement transducer of preprocessor 1 and integrated form acceleration transducer and acceleration transducer interface, the power interface corresponding with the charger of preprocessor 1, the USB interface chip that is connected with post processor.The signal that the preprocessor inner sensor picks up, import filtering circuit, integrating circuit, demodulator circuit, anti-mixting circuit, A/D change-over circuit, USB interface chip in the mid-processor into by sensor interface through signal wire, import the notebook computer of post processor through USB interface into.
Post processor 3 comprises notebook computer, is arranged at the data collection and analysis unit of notebook computer.This data collection and analysis cellular construction comprises that data acquisition, Filtering Processing, amplitude domain analysis, time-domain analysis, frequency-domain analysis, time-frequency drawing, model analysis, system such as withdraw from subelement as shown in Figure 2.
The integrated form displacement transducer imports into from corresponding displacement transducer interface and acceleration transducer interface with the signal that the integrated form acceleration transducer picks up, through filtering circuit, integrating circuit, demodulator circuit, anti-mixting circuit, the A/D change-over circuit, the USB interface chip, reach notebook computer in the post processor by USB interface again, the I/O expanded circuit is by the USB interface chip realization filtering circuit that is connected with notebook computer in the post processor, integrating circuit, demodulator circuit, anti-mixting circuit, data communication between the notebook computer in A/D change-over circuit and the post processor; Power supply is through charger, power interface, charging circuit, rechargeable battery, DC-DC mu balanced circuit, realizes charging and the operating voltage of preprocessor inner sensor is provided.System architecture diagram as shown in Figure 1.
The integrated form displacement transducer adopts advanced paster technique technology, displacement sensor probe, cable, signal processor interconnected and encapsulate be integrated in the threaded cylindrical probe body, and interconnect by the sensor interface of cable or signal wire and mid-processor.The integrated form acceleration transducer is connected integrated acceleration chip ADXL05 to be combined in one and to be encapsulated in the cylindrical tube and is electrically connected mutually by the sensor interface of output line with mid-processor 2 with the electric charge amplification appliance.
Filtering circuit comprises high and low pass filter, and the technology that high-pass filtering is handled realizes: added voltage follower circuit before high-pass filtering circuit, the function computing circuit that circuit adopts high-performance integrated operatinoal amplifier TL064 and accurate R, C to constitute.The voltage follow part has mainly realized the signal auto_steady amplitude, and voltage follower circuit utilizes the nonlinear characteristic of diode, can finish auto_steady amplitude.Low-pass filter is believed the programmable filter chip MAX270 that company (Maxim) produces by U.S.A, can be that 1kHz～25kHz signal carries out filtering to frequency range by programming.This filtering chip is a digital programmable, two-way, second order, continuous time mode low-pass filter, dynamic range is 96DB, need not the external clock signal, accept the frequency of extraneous input signal selectively, can pass through wave filter when frequency during at 1KHz～25KHz, exceed this scope and then can not pass through, thereby reach the function of low-pass filtering.Between high-pass filtering circuit and low-pass filter circuit, meet an electronic switch AD7502, this AD7502 is that binary channels, four is selected one electronic switch, reaches control pin A0, the A1 of AD7502 by the control signal of notebook computer programming output and the pin D0-D6 of MAX270 selects the cutoff frequency of high-pass filtering circuit and low-pass filter circuit to realize signal high pass, low pass, bandpass filtering treatment by the I/O expanded circuit.
What integrating circuit adopted is to exchange integrating circuit, is provided with by resistance and electric capacity in integrating circuit and quadratic integral circuit, constitutes T type network, in order to eliminate the influence that exchanges imbalance of integral operation amplifier input end and low-frequency disturbance; Signal is when this circuit, and the selection of integrated form has: straight-through, integration and quadratic integral specifically are to realize by electronic switch AD7502.
Demodulator circuit comprises two parts: first is the rectification circuit that two-way alternating voltage is become unidirectional pulsating volage.Second portion is a low-pass filter circuit, and its task is a filtering carrier wave AC signal, keeps direct current and AC compounent in the measured signal, exchanges---the wave filter in the DC converter then is only to keep to represent rectifier to get the DC voltage of the mean value of pulsating volage.
Anti-mixting circuit is made up of chip MAX293 and MAX270, and wherein MAX293 is eight rank low pass ellipse switching capacity filter, and this wave filter corner frequency scope is that 0.1Hz is to 25kHz.Behind the MAX293 circuit, connect simulation low-pass filter MAX270 in order to eliminate own " resonance " high-frequency signal of MAX293 itself.
The A/D change-over circuit comprises 16 road simulant electronic switch ADG506, A/D converter AD976, single-chip microcomputer 89C51, USB interface chip PDIUSBD12.The multichannel vibration signal is after filtration behind wave circuit, integrating circuit, demodulator circuit, the anti-mixting circuit, reach A/D converter AD976 by multiway analog switch ADG506 and be converted to digital signal, the data that collect transfer to notebook computer through single-chip microcomputer P89C51, USB interface chip PDIUSBD12 by USB interface.Analog switch ADG506 and A/D converter AD976 working method specifically are to trigger the interrupt routine that solidifies in the single-chip microcomputer P89C51 by the control signal that the notebook computers in the USB interface chip PDIUSBD12 reception post processor 3 reach to realize by single-chip microcomputer P89C51 control.
USB interface chip expansion I/O circuit transmits the programmable control chip AD7502 that uses in filtering circuit, integrating circuit, demodulator circuit, the anti-mixting circuit that controls signal to that notebook computer is exported in the post processor 3, AD7512, filtering chip MAX270 and single-chip microcomputer 89C1051.
Charger passes through power interface, be connected with charging circuit, rechargeable battery, DC-DC mu balanced circuit in being arranged on mid-processor, charging circuit is the chip MAX1757 that MAXIM company produces, rechargeable battery adopts three joint lithium ion batteries, the voltage that three joint lithium ion battery groups provide changes between 12.6～8.75V, behind mu balanced circuit, be output as ± 12V the DC voltage of ± 5V.The filtering circuit of the Sensor section of preprocessor 1 and mid-processor 2, integrating circuit, demodulator circuit, the concrete operating voltage situation of anti-mixting circuit part are: the displacement transducer operating voltage is ± 12V, the operating voltage of acceleration transducer is ± 5V that each chip operating voltage of signal processing circuit is ± 5V.
Signals collecting and analytic unit in the notebook computer, its application program adopts visual high level language, and major function comprises that data acquisition, Filtering Processing, amplitude domain analysis, time-domain analysis, frequency-domain analysis, time-frequency drawing, model analysis, system such as withdraw from subelement.Data acquisition unit comprises parameter setting and data acquisition, and USB device is at first opened in this unit, and the USB device duty is judged, when makeing mistakes, the demonstration error message is also withdrawed from; Judge successfully: enter the controlled variable setting, eject parameter the interface is set, just can carry out the selection of high and low pass filter, integration, demodulation, anti-mixing parameter, high pass be provided with have in the option straight-through, 0.1,1, the 10HZ quadrinomial parameter is selective, and low pass is provided with and adds low pass or do not add low pass, selection adds needs need to select at low pass flex point option that flex point, integration option can lead directly to, integration, a quadratic integral are selected behind the low pass option; The demodulation option can be provided with and add demodulation or do not add demodulation; Carry out the setting of anti-mixing parameter at last, parameter is clicked " determining " button in the interface button after setting completed, just parameter set on the interface is reached the USB interface chip of mid-processor by USB interface, reach filtering circuit, integrating circuit, demodulator circuit, anti-mixting circuit by the I/O expanded circuit in the mid-processor again and realize the signal condition working method.Parameter just enters acquisition interface after setting completed and carries out data acquisition, data acquisition need be carried out data and preserve file, sample frequency, sampling time, the setting of acquisition channel and gain, click " determining " button in the interface button after setting completed, just parameter set on the interface is reached the A/D change-over circuit of mid-processor by USB interface, to wave circuit after filtration simultaneously, integrating circuit, demodulator circuit, the signal that transmits by preprocessor behind the anti-mixting circuit, convert data to by A/D converter, data are transferred to notebook computer by USB interface again and are saved in the file.
Signals collecting and analytic unit can be analyzed the original signal of preserving, and click the Filtering Processing subelement, drop-down menu appears, comprise low-pass filtering, high-pass filtering, bandpass filtering, bandreject filtering, click respectively, enter corresponding Filtering Processing interface, import source file, file destination storing path and filename are set, and set filtering, click and determine by frequency and sample frequency, just finished corresponding Filtering Processing, and the data after will handling have been saved in file destination; Click the amplitude domain analysis subelement, enter the amplitude domain analysis interface, import source file, file destination storing path and filename are set, click and determine, amplitude domain correlation analysis value comprises peak value, average amplitude, root-mean-square value, peak-to-peak value, kurtosis, kurtosis index, nargin index, peak value index, waveform index, pulse index, just has been saved in file destination; Click the time-domain analysis subelement, drop-down menu occurs, comprise autocorrelation analysis and cross-correlation analysis, same passing through imports source file, and file destination is set, and clicks and determines that analysis result just has been saved in file destination; Click the frequency-domain analysis subelement, drop-down menu appears, comprise Fourier transform, power spectrumanalysis, correlation analysis, coherence function, click enters respective interface, import source file, file destination is set, click and determine, just the corresponding frequency spectrum analysis chart can occur, this spectrum analysis figure has been saved in file destination simultaneously; Click time-frequency drawing subelement, drop-down menu occurs, comprise that time domain is drawn and frequency domain is drawn, click time domain and draw, enter time domain drawing interface, import source file, click and show, just can time of occurrence-amplitude figure, click and print, can directly print this figure, click and preserve, can preserve this figure; The click frequency domain is drawn, and enters frequency domain drawing interface, imports source file, clicks to show, just can the frequency of occurrences-amplitude figure and frequency-phase diagram, can print and preserve equally; Click the model analysis subelement, drop-down menu appears, comprise that Modal Parameter Identification and structure dynamically show, click Modal Parameter Identification, enter the Modal Parameter Identification interface, import source file, click and determine, the frequency of occurrences-real part/imaginary part figure is clicked Modal Parameter Identification, and each order frequency just can identify; Click structure and dynamically show, enter the dynamic display interface of structure,, can obtain the bending vibation mode picture of each rank mode by this interface; The click system withdraws from subelement, shutdown signal collection and analytic unit.
During on-the-spot test, one end of integrated form displacement transducer and integrated form acceleration transducer is installed in tested correct position to picture, the other end of sensor links to each other with mid-processor 2 by sensor interface, mid-processor 2 is linked to each other with notebook computer in the post processor 3 by USB interface, start signals collecting and analytic unit in the notebook computer, open the power switch of mid-processor 2, just can carry out on-the-spot test.
Below only be preferred embodiment of the present utility model, according to above-mentioned design, those skilled in the art also can make various modifications and conversion to this.For example, dissimilar, the displacement transducer of different performance and selecting for use of acceleration transducer, the selection of filtering circuit, integrating circuit, demodulator circuit, the different matching ways of anti-mixting circuit and implementation; Filtering circuit, integrating circuit, demodulator circuit, anti-mixting circuit, the data communication implementation between Acquisition Circuit and notebook computer, movable button button and different connected modes of post processor fixed mount or the like.Yet similar this conversion and modification all belong to the essence of the utility model protection.
Claims (4)
1. portable displacement and acceleration vibration signal test macro, it is characterized in that it is mainly by preprocessor (1), mid-processor (2) and post processor (3) constitute, integrated form displacement transducer in the preprocessor (1), the integrated form acceleration transducer is connected to each sensor interface of mid-processor (2) respectively through the signal wire of each sensor, by this interface and the filtering circuit that is arranged in the mid-processor (2), integrating circuit, demodulator circuit, anti-mixting circuit, the A/D change-over circuit, the USB interface chip, the I/O expanded circuit is electrically connected mutually, charger in the preprocessor (1) then is connected to the power interface of mid-processor (2), by this power interface and the charging circuit that is arranged in the mid-processor (2), rechargeable battery, the DC-DC mu balanced circuit is electrically connected mutually, be connected in the post processor (3) of mid-processor (2) USB interface, it comprises notebook computer, be arranged at the data collection and analysis unit of notebook computer, also be provided with the special-purpose interlayer (11) of preprocessor in the described mid-processor (2), mid-processor (2) is provided with post processor fixed mount (31).
2. a kind of portable displacement according to claim 1 and acceleration vibration signal test macro is characterized in that the special-purpose interlayer of described preprocessor (11) is respectively sensor-specific interlayer (21) and adorns special-purpose interlayer (22) with the circuit collection.
3. a kind of portable displacement according to claim 1 and acceleration vibration signal test macro, it is characterized in that described mid-processor (2) but the rear portion be provided with the drop front (23) of switch.
4. a kind of portable displacement according to claim 1 and acceleration vibration signal test macro is characterized in that described post processor fixed mount (31) connects firmly through the movable button button (24) of mid-processor (2) left and right sides face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200526234U CN201004269Y (en) | 2006-10-25 | 2006-10-25 | Portable shift and acceleration vibration signal testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200526234U CN201004269Y (en) | 2006-10-25 | 2006-10-25 | Portable shift and acceleration vibration signal testing system |
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| Publication Number | Publication Date |
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| CN201004269Y true CN201004269Y (en) | 2008-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2006200526234U Expired - Fee Related CN201004269Y (en) | 2006-10-25 | 2006-10-25 | Portable shift and acceleration vibration signal testing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721463A (en) * | 2011-12-07 | 2012-10-10 | 上海瑞视仪表电子有限公司 | Written test apparatus for measuring rotating machinery reciprocating vibration by using piezoelectric effect |
| CN103792052A (en) * | 2012-10-29 | 2014-05-14 | 成都赛腾自动化工程有限公司 | Portable rotating machinery state monitoring system |
-
2006
- 2006-10-25 CN CNU2006200526234U patent/CN201004269Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721463A (en) * | 2011-12-07 | 2012-10-10 | 上海瑞视仪表电子有限公司 | Written test apparatus for measuring rotating machinery reciprocating vibration by using piezoelectric effect |
| CN103792052A (en) * | 2012-10-29 | 2014-05-14 | 成都赛腾自动化工程有限公司 | Portable rotating machinery state monitoring system |
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Correction item: Co-patentee Correct: Yin Xiyun Number: 02 Page: The title page Volume: 24 |
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