CN106124043A - Configurable output intelligent sensing system based on MCU and GPRS - Google Patents

Configurable output intelligent sensing system based on MCU and GPRS Download PDF

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Publication number
CN106124043A
CN106124043A CN201610440300.0A CN201610440300A CN106124043A CN 106124043 A CN106124043 A CN 106124043A CN 201610440300 A CN201610440300 A CN 201610440300A CN 106124043 A CN106124043 A CN 106124043A
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mcu
module
gprs
signal
measurand
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任继顺
汪洋
崔悦
张民威
苏疆东
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BEIJING ZHONGYUAN RISEN TECHNOLOGY Co Ltd
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BEIJING ZHONGYUAN RISEN TECHNOLOGY Co Ltd
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Priority to CN201610440300.0A priority Critical patent/CN106124043A/en
Publication of CN106124043A publication Critical patent/CN106124043A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The present invention relates to Intelligent Sensing System.It is more particularly related to configurable output Intelligent Sensing System based on MCU and GPRS, including: vibration sensitive element, it is for being converted into the signal of telecommunication by the original vibration signal of the measurand detected, and exports to MCU module；MCU module, it is for being converted to digital signal by the signal of telecommunication received, by calculating all Faults by Vibratings obtaining measurand and exporting on request；GPRS module, it is connected with MCU module communication, for wirelessly being exported by the Faults by Vibrating received；PC end, it is connected with MCU module communication, for setting the Faults by Vibrating instruction of the measurand needing output, and sends to MCU module；MCU module receives the instruction that PC end sends, and determines the Faults by Vibrating of the measurand needing output, and selectivity output.Present invention achieves high-intelligentization, systematized signal processing mode.

Description

Configurable output Intelligent Sensing System based on MCU and GPRS
Technical field
The present invention relates to a kind of Intelligent Sensing System.It is more particularly related to a kind of based on MCU and GPRS can Configuration output Intelligent Sensing System.
Background technology
In vibration-testing and accident analysis, the index such as the peak-to-peak value of vibration signal, virtual value is to evaluate testee to shake The key index parameter of fatigue resistance, and vibrate the degree of bias, kurtosis and the amplitude of specific frequency filtering, envelope demodulation feature amplitude is right Testee carries out vibration source location and the key characterization parameter of fault diagnosis.And above-mentioned Faults by Vibrating is mainly surveyed by vibration Test system is measured and is obtained.
One traditional vibration test system is generally made up of vibrating sensor, harvester, signal processing apparatus, such as figure Shown in 1.Vibrating sensor is basis sensing element, and its effect is the vibration displacement of measurand, speed, acceleration signal to be turned It is changed to the signal of telecommunication or digital signal, by signal cable or wireless network transmissions to harvester.Harvester typically configures There is the reception device of wireless network, for receiving the vibration signal that vibrating sensor is transmitted by wireless network, or configuration There is modulus (A/D) modular converter, be converted to digital signal in order to the current/voltage signal exported by vibrating sensor.Gather dress Put after collecting digitized vibration signal, signal processing apparatus calculate the peak-to-peak value of vibration signal, virtual value, vibration inclined The Faults by Vibrating indexs such as the amplitude of degree, kurtosis and specific frequency filtering, are analyzed judging for user.Signal processing device Put generally computer, harvester and signal processing apparatus typically to be completed by special computer.
In said system, traditional vibrating sensor can only export the original vibration time domain waveform signal collected (no matter the way of output is wireless mode or wired mode), it is therefore desirable to the signal processing apparatus of configuration rear end, and work out Corresponding software module realizes the resolving of Faults by Vibrating.And, for different measuring object, it analyzes the characteristic parameter judged Also it is not quite similar, then collecting device that will be differently configured, signal processing apparatus, writes different calculating and process software mould Block, often results in the special equipment that user uses more, and the drawback that equipment is the hugest etc..
Summary of the invention
It is an object of the invention to solve at least the above, and the advantage that at least will be described later is provided.
A further object of the invention is to realize high-intelligentization, systematized signal processing mode, it is not necessary to changes or installs additional Other traditional sensors, can be achieved with the on-demand output of the multiple Faults by Vibrating of same sensor, and vibration performance ginseng Number calculates the on-line setup of the constraints such as filter frequency range and time cycle scope used and adjusts.
In order to realize object of the present invention and further advantage, it is provided that a kind of based on MCU and GPRS configurable defeated Go out Intelligent Sensing System, including:
Vibration sensitive element, it is for being converted into the signal of telecommunication by the original vibration signal of the measurand detected and defeated Go out to MCU module；
MCU module, it is for being converted to digital signal by the signal of telecommunication received, by calculating the institute obtaining measurand There is Faults by Vibrating and export on request；
GPRS module, it is connected with described MCU module communication, is used for the vibration performance of the MCU module output that will receive Parameter wirelessly exports；
PC end, it is connected with described MCU module communication, for setting the Faults by Vibrating of the measurand needing output Instruction, and send to described MCU module；
Wherein, described MCU module receives the instruction that described PC end sends, and determines that the vibration of the measurand needing output is special Levy parameter, and export by the way of MCU module is with analog electrical signal and/or defeated by the way of GPRS module is with wireless signal Go out.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, described PC end is all right For filter frequency range and time cycle necessary to the Faults by Vibrating of the measurand of setup algorithm needs output Extent directive, and send it to described MCU module.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, described MCU module exists After receiving the instruction that described PC end sends, readjust filter frequency range and the time domain charactreristic parameter of frequency domain character parameter Time cycle scope, and then determine the Faults by Vibrating of the final measurand needing output.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, described GPRS module will The Faults by Vibrating of measurand needing output received wirelessly exports to radio receiver, and show and Storage.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, described MCU module exists After determining the Faults by Vibrating of the measurand needing output, export after this Faults by Vibrating is converted to analog electrical signal To rear end harvester, and show and storage.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, in described MCU module Including AD conversion module, logical operation module and D/A conversion module, the input of described AD conversion module and described vibration sensing Element connects, the signal of telecommunication that the vibration sensitive element received exports to be converted to digital signal and is delivered to described logic fortune Calculating module, the input of described D/A conversion module is connected with described logical operation module, with the logical operation module that will receive The digital signal of output is converted to analog electrical signal and exports.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, described logical operations mould Block includes time domain charactreristic parameter computing module and frequency domain character parameter calculating module.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, described temporal signatures is joined Number computing modules include the peak-to-peak value to measurand, virtual value, meansigma methods, root-mean-square value, variance, the degree of bias, kurtosis, waveform because of Son, peak factor, pulse index and the calculating of nargin coefficient.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, described frequency domain character is joined Number computing module includes the narrow-band filtering frequency amplitude to measurand, wideband filtered frequency amplitude and the meter of envelope demodulation amplitude Calculate.
Preferably, in described based on MCU and GPRS configurable output Intelligent Sensing System, measurand original Vibration signal includes vibration displacement, vibration velocity and acceleration of vibration.
The present invention at least includes following beneficial effect: the present invention is with high-performance micro-control unit (Microcontroller Unit) MCU is hardware foundation, and in conjunction with GPRS wireless network data transmission technology, vibration sensitive element gathers the former of measurand The data of beginning vibration signal, are changed into digital signal by the internal AD conversion of MCU by analog electrical signal, logical inside MCU module Cross digital signal processing algorithm and calculate the peak-to-peak value of measurand, virtual value, the degree of bias, kurtosis and the width of specific frequency filtering in real time Value, envelope demodulation feature amplitude etc., then by wireless network or simulate wired by the way of selected Faults by Vibrating is exported. The user of rear end, then without gathering the original time domain waveshape signal of vibration signal again, also need not carry out eigenvalue calculation again, Only need to by wireless network to Intelligent Sensing System select oneself Faults by Vibrating of interest and filter frequency range, In the time range cycle etc., can directly obtain required Faults by Vibrating, it is not necessary to change or install additional other traditional sensors, it is achieved The output of the multiple Faults by Vibrating of same sensor, and Faults by Vibrating calculate filter frequency range used and The on-line setup of the constraintss such as time cycle scope adjusts.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part also will be by this Invention research and practice and be understood by the person skilled in the art.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of traditional vibration test system；
Fig. 2 is the basic structure schematic diagram of the Intelligent Sensing System of the present invention；
Fig. 3 is the principle schematic of the Intelligent Sensing System of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to description literary composition Word can be implemented according to this.
Should be appreciated that used herein such as " have ", " comprising " and " including " term do not allot one or many Other element individual or the existence of a combination thereof or interpolation.
The present invention provides a kind of configurable output Intelligent Sensing System based on MCU and GPRS, as shown in Figures 2 and 3, bag Include:
Vibration sensitive element, it is for being converted into the signal of telecommunication by the original vibration signal of the measurand detected and defeated Go out to MCU module.Vibration sensitive element is piezoelectric type or magneto-electric intelligence sensor.Original vibration signal is turned by intelligence sensor Turn to the output of curtage signal.
MCU module, it for being converted to digital signal, MCU module operational shock characteristic parameter by the signal of telecommunication received Calculation procedure, obtain all Faults by Vibratings of measurand by calculating and export on request.
The MCU module of the present invention is STM32f405 chip, and STM32f405 is based on 32 high-performance ARM Cortex-M4 The MCU chip of kernel, characteristic is as follows:
MCU+FPU, 210DMIPS, up to 1MB flash memory/192+4KB RAM, 3 set spi bus interfaces, USB OTG can be set HS/FS, Ethernet, 17 TIM, 3 ADC, 15 communications peripheral interfaces and photographic head.
STM32f405 embedded floating number processing module (FPU), provides floating number meter for carrying out all kinds of calculation of characteristic parameters Calculation ability ensures, and its embedded ethernet interface module is the basis realizing wireless output, its embedded analog-to-digital conversion module (ADC) vibration primary signal can be realized digitized conversion and gather.
GPRS module, it is connected with described MCU module communication, is used for the vibration performance of the MCU module output that will receive Parameter wirelessly exports.
GPRS is the abbreviation of general packet radio service technology (General Packet Radio Service), and it is Gsm mobile telephone user can a kind of mobile data services.GPRS can say it is the continuity of GSM.GPRS is continuous at frequency with conventional The mode of road transmission is different, is to transmit with package (Packet) formula, and transfer rate can be promoted to 56 even 114Kbps.
GPRS is often described as " 2.5G ", say, that this technology is positioned at the second filial generation (2G) and the third generation (3G) is mobile Between mechanics of communication.It is by utilizing untapped TDMA channel in GSM network, it is provided that the data transmission of middling speed.GPRS breaks through GSM net can only provide Circuit-switched mode of thinking, only by increasing corresponding functional entity and to existing base station system Carrying out part transformation and realize packet switch, the input of this transformation is the most little comparatively speaking, but the user data rate obtained The most considerable.And, because being no longer necessary to the intermediary's transducer required for existing wireless application, all can so connecting and transmitting More convenient easily.
PC end, it is connected with described MCU module communication, for setting the Faults by Vibrating of the measurand needing output Instruction, and send to described MCU module.User according to oneself need select one or several Faults by Vibrating as defeated Go out signal, and determine and export by GPRS wireless network mode or exported by wired analog mode.
Wherein, described MCU module receives the instruction that described PC end sends, and determines that the vibration of the measurand needing output is special Levy parameter, and export by the way of MCU module is with analog electrical signal and/or defeated by the way of GPRS module is with wireless signal Go out.User transmits control instruction by the wireless network of PC end to Intelligent Sensing System, and this control instruction can be sent directly to MCU module, it is also possible to send by the way of the GPRS communication link of GPRS module and antennal interface are with GPRS wireless signal to MCU module, this instruction include of both content: needs export Faults by Vibrating；Calculate what Faults by Vibrating needed Filter frequency range and time cycle scope.
In described based on MCU and GPRS configurable output Intelligent Sensing System, described PC end can be also used for setting Calculate filter frequency range and time cycle extent directive necessary to the Faults by Vibrating of the measurand needing output, And send it to described MCU module.User can be good at PC end on-line setup, operability.
In described based on MCU and GPRS configurable output Intelligent Sensing System, described MCU module receive described After the instruction that PC end sends, readjust the filter frequency range of frequency domain character parameter and the time cycle of time domain charactreristic parameter Scope, MCU module is real-time according to the filter range of new frequency domain character parameter and the time cycle scope of time domain charactreristic parameter Calculate Faults by Vibrating, and then determine the Faults by Vibrating of the final measurand needing output.
In described based on MCU and GPRS configurable output Intelligent Sensing System, described GPRS module will receive The Faults by Vibrating needing the measurand of output wirelessly exports to radio receiver, and radio receiver is permissible For the computer with receiver module, and show and storage.
In described based on MCU and GPRS configurable output Intelligent Sensing System, described MCU module is determining that needs are defeated After the Faults by Vibrating of the measurand gone out, after this Faults by Vibrating is converted to analog electrical signal, can be voltage or Current signal, output is to rear end harvester, and rear end harvester can be the computer with analog-to-digital conversion device, and show And storage.
In described based on MCU and GPRS configurable output Intelligent Sensing System, described MCU module includes AD conversion Module, logical operation module and D/A conversion module, the input of described AD conversion module is connected with described vibration sensitive element, with The signal of telecommunication that the vibration sensitive element received exports is converted to digital signal and is delivered to described logical operation module, described The input of D/A conversion module is connected with described logical operation module, the numeral letter of the logical operation module output receiving Number be converted to analog electrical signal and export.
In described based on MCU and GPRS configurable output Intelligent Sensing System, when described logical operation module includes Characteristic of field parameter calculating module and frequency domain character parameter calculating module.
In described based on MCU and GPRS configurable output Intelligent Sensing System, described time domain charactreristic parameter calculates mould Block includes the peak-to-peak value to measurand, virtual value, meansigma methods, root-mean-square value, variance, the degree of bias, kurtosis, shape factor, peak value The factor, pulse index and the calculating of nargin coefficient.
1) peak value Xp
{ xiN number of sampled point be divided into n section, each section is found out n peak value { Xpj(j=1～n), then { xi? Peak index is:
X p = 1 n Σ j = 1 n X p j
Peak value XpReflect is the maximum of certain moment amplitude, thus it is instantaneous to be applicable to having of surface pitting damage etc The fault diagnosis of impact.It addition, the situation (such as 300r/min below) relatively low to rotating speed, also diagnose frequently with peak value.
2) average
It is the meansigma methods in half period for simple harmonic oscillation, is putting down after absolute value processes for bearing impact vibration Average.
X ‾ = 1 n Σ i = 1 n | X i |
Diagnostic effect is essentially the same with peak value, and its advantage is monitor value relatively peak steady, but is generally used for rotating speed Higher situation (such as more than 300r/min).
3) root-mean-square value (virtual value) Xrms
X r m s = 1 n Σ i = 1 N x i 2
Root-mean-square value is to time averaging, is used for reflecting the energy size of signal, it is adaptable to as the amplitude of abrasion etc It is worth the most slowly varying fault diagnosis.Bearing mnanufacture precision is the lowest or bearing wear degree is the biggest, then XrmsIt is worth the highest.Right Initial failure is insensitive, but stability is fine.
4) variance
Represent the wave component of signal, characterize the frequency stability of vibration signal.It is designated as
5) peak factor (crest factor) Cf
C f = x p x r m s
The one class discrete type defects such as localized delamination, scratch, indentation and indenture on bearing element, the impulse waveform of generation is total Energy is the most little, but the spike degree of waveform is obvious, and therefore, peak factor is applicable to the diagnosis of this kind of fault.(crest factor Cf, the relative size of reflection spike that can be appropriate.Pass judgment on bearing and close underproof CfBoundary value is about 1.5, CfValue is more than 1.5, then Think and there is local defect on bearing element.)
The vibration crest factor of normal bearing is about 4～5, and the vibration peak factor caused because of local defects such as peelings is often More than 10, defect is the biggest, CfIt is worth the biggest.
During the local defects such as bearing generation peeling, CfIt is worth relatively large；When the abnormal conditions such as insufficient lubrication and abrasion occur Time, CfIt is worth relatively small.
It is pointed out that bearing break down whole during crest factor value be not to increase always, but First increase and reduce again.This is because the fault initial stage, vibration amplitude can substantially increase, and root-mean-square value change is the most inconspicuous, with event Barrier constantly extension, peak value reaches the limit values, and root-mean-square value starts to significantly increase.
Crest factor is the ratio of a relative value, and the impact of its most vibrated signal absolute level value size, with sensing The sensitivity of device and the amplification of amplifier are unrelated, are not affected by bearing size size is different with rotating speed simultaneously, thus survey Given data is very convenient.
6) kurtosis index K
The kurtosis index definition of discrete series is normalized 4 rank centre-to-centre spacing:
K = 1 N Σ i = 1 n x i 4 X r m s 4
Amplitude meets its kurtosis value of fault-free bearing of normal distribution and is about 3, and the kurtosis value of bearing vibration signal typically exists 3-45, on duty when being more than 4, i.e. imply that bearing has a certain degree of damage.The advantage using this feature parameter is and bearing Rotating speed, size and load unrelated, be primarily adapted for use in the diagnosis of spot corrosion class fault.
Kurtosis value has the variation tendency similar with crest factor, the nargin under bearing kilter and severe fault condition Index is almost identical.
Initial failure is had higher sensitivity, but stability is bad, malfunction monitoring can be carried out with virtual value simultaneously.
7) shape factor Ws
Form factor is defined as the ratio of root-mean-square value and absolute mean:
W S = X r m s X ‾
Work as WsWhen being worth excessive, show that rolling bearing may have spot corrosion；Work as WsWhen being worth too small, it is possible to there occurs abrasion.
8) pulse index I
9) nargin coefficient L
When the information comprised in time signal is not from a part or parts, and when being belonging to multiple element, as The vibration signal of multi-stage gear usually contains the information from parts such as high gear, low-speed gear and bearings, at this In the case of Zhong, available shape factor (waveform index) Ws, pulse index I, nargin coefficient L dimensionless index carry out fault diagnosis Or analyze.
10) degree of bias ∝
The unsymmetry of degree of bias ∝ reflection vibration signal, if ∝ is the biggest, asymmetric the most severe.Owing to there is a direction Friction or collision, cause the asymmetric of vibrational waveform, make degree of bias index increase.
Calculation expression:
In described based on MCU and GPRS configurable output Intelligent Sensing System, described frequency domain character parameter calculates mould Block includes the narrow-band filtering frequency amplitude to measurand, wideband filtered frequency amplitude and the calculating of envelope demodulation amplitude.
11) narrow-band filtering
Owing to small and weak high-frequency percussion resonance signal is superimposed in low frequency signals such as turning frequency, FFT is used to separate, It is thus desirable to first the non resonant signal of low frequency signal bigger for amplitude and higher frequency is filtered, leave behind by rushing of periodically occurring Hit resonance signal.
If the frequency of periodic component is ω0, it is ω with mid frequency0, narrow band filter with a width of Δ ω is to original letter Number it is filtered.To periodic component, its spectrum peak does not changes with bandwidth, but the energy of bandwidth random noise is big In the range of causing to be distributed on certain frequency, after filtering, its output can reduce along with the reduction of bandwidth, therefore narrow band filter Can effectively suppress this noise.
12) wideband filtered
Wideband filtered is for narrow-band filtering, i.e. keeps the frequency signal of a certain bandwidth, can in signal analysis Realize the signal in our required specific bandwidth is comprehensively analyzed.
13) envelope spectrum
For envelope spectrum analysis is for modulated signal.
Common envelope Analysis Method is to extract the envelope of signal with Hilbert conversion, and Hilbert envelope is time-domain signal The envelope of absolute value, it extracts modulated signal from signal, analyzes the change of modulation function, has the biggest to extracting fault signature Superiority.
Resonance signal after narrow-band filtering cannot directly use FFT to carry out frequency identification, needs to use Hilert Conversion carries out envelope detected, detects impact signal envelope signal.
There is a periodic envelope in throw envelope signal, this envelope is the bag of periodic shock vibration resonance signal Network.
Envelope spectrum identification:
After trying to achieve envelope waveform, envelope waveform is carried out fast fourier transform, it is thus achieved that the spectrogram of envelope signal, Main signal (amplitude maximum signal) amplitude, main signal frequency, main signal space phase can be obtained from this spectrogram.
It is clear that the dominant frequency of signal (amplitude maximum) is generating unit speed frequency from the spectrogram of envelope signal, Remaining amplitude frequency is entirely the higher hamonic wave of this frequency.Can clearly reach a conclusion from the spectrogram of envelope signal, by Touch and grind the impact each cycle caused once.Spectrogram additionally by envelope signal can also obtain the space phase that impact occurs Position, it helps fault location.
In described based on MCU and GPRS configurable output Intelligent Sensing System, the original vibration signal of measurand Including vibration displacement, vibration velocity and acceleration of vibration.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed Using, it can be applied to various applicable the field of the invention completely, for those skilled in the art, and can be easily Realizing other amendment, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention does not limit In specific details with shown here as the legend with description.

Claims (10)

1. a configurable output Intelligent Sensing System based on MCU and GPRS, it is characterised in that including:
Vibration sensitive element, it for being converted into the signal of telecommunication by the original vibration signal of the measurand detected, and exports extremely MCU module；
MCU module, it is for being converted to digital signal by the signal of telecommunication received, and shakes by calculating acquisition all of measurand Dynamic characteristic parameter also exports on request；
GPRS module, it is connected with described MCU module communication, is used for the Faults by Vibrating of the MCU module output that will receive Wirelessly export；
PC end, it is connected with described MCU module communication, refers to for setting the Faults by Vibrating of the measurand needing output Order, and send to described MCU module；
Wherein, described MCU module receives the instruction that described PC end sends, and determines the vibration performance ginseng of the measurand needing output Number, and export by the way of MCU module is with analog electrical signal and/or export by the way of GPRS module is with wireless signal.
2. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 1, it is characterised in that described Filter frequency range necessary to the Faults by Vibrating of the measurand that PC end can be also used for setup algorithm needs output With time cycle extent directive, and send it to described MCU module.
3. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 2, it is characterised in that described MCU module after receiving the instruction that described PC end sends, readjust frequency domain character parameter filter frequency range and time The time cycle scope of characteristic of field parameter, and then determine the Faults by Vibrating of the final measurand needing output.
4. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 1, it is characterised in that described The Faults by Vibrating of the measurand needing output received wirelessly is exported to wireless receiving dress by GPRS module Put, and show and storage.
5. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 1, it is characterised in that described This Faults by Vibrating, after the Faults by Vibrating determining the measurand needing output, is converted to simulation electricity by MCU module Export after signal to rear end harvester, and show and storage.
6. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 1, it is characterised in that described MCU module includes AD conversion module, logical operation module and D/A conversion module, and the input of described AD conversion module is with described Vibration sensitive element connects, the signal of telecommunication that the vibration sensitive element received exports is converted to digital signal and is delivered to institute Stating logical operation module, the input of described D/A conversion module is connected with described logical operation module, with the logic that will receive The digital signal of computing module output is converted to analog electrical signal and exports.
7. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 6, it is characterised in that described Logical operation module includes time domain charactreristic parameter computing module and frequency domain character parameter calculating module.
8. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 7, it is characterised in that described Time domain charactreristic parameter computing module include the peak-to-peak value to measurand, virtual value, meansigma methods, root-mean-square value, variance, the degree of bias, Kurtosis, shape factor, peak factor, pulse index and the calculating of nargin coefficient.
9. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 7, it is characterised in that described Frequency domain character parameter calculating module includes the narrow-band filtering frequency amplitude to measurand, wideband filtered frequency amplitude and envelope solution The calculating of amplitude modulation value.
10. configurable output Intelligent Sensing System based on MCU and GPRS as claimed in claim 1, it is characterised in that tested The original vibration signal of object includes vibration displacement, vibration velocity and acceleration of vibration.
CN201610440300.0A 2016-06-17 2016-06-17 Configurable output intelligent sensing system based on MCU and GPRS Pending CN106124043A (en)

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CN109084826A (en) * 2018-07-06 2018-12-25 同济大学 A kind of Intelligent Sensing System for prognostic and health management
CN114781466A (en) * 2022-06-21 2022-07-22 西安因联信息科技有限公司 Fault diagnosis method and system based on harmonic fundamental frequency of rotary mechanical vibration signal

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