A kind of equipment fault audio frequency detection system
Technical field
The utility model relates to a kind of equipment fault audio frequency detection system, belongs to the detection field of equipment fault.
Background technology
One experienced engineer, can by equipment on startup, close when or the sound of operation process, carry out anticipation
Whether operation irregularity, if there is potential faults, thus maintenance ahead of time, maintenance, solve hidden danger, and guarantee equipment normally uses or subtracts
The expense of few later period maintenance.But be not each engineer be all experienced, and micro-judgment cenesthesia factor, it is judged that
Error is big.At present, also there is the system and device for fault detect, a kind of equipment event as disclosed in Patent No. CN101840233A
Barrier detection device and equipment fault detection method, according to the event with this parsing in parsing failure code information searching expert database module
The corresponding trouble point of barrier code, positions to this fault;And pass through experience library module, find out corresponding with described trouble point
Fault solve information, to get rid of the fault of current detected equipment.This device, system, use excessively complicated, cost
Putting into height, later maintenance is expensive.
Utility model content
The utility model provides a kind of equipment fault audio frequency detection system, by the difference of equipment sound when normal and fault
Different carrying out judging, detecting, detection program is simple, and whether the equipment that can simultaneously detect is normal under various states, detecting system
Simple in construction, low cost is good to collection detection, the judgement effect of sound.
In order to reach the purpose of this utility model, the utility model adopts the following technical scheme that:
A kind of equipment fault audio frequency detection system, including audio frequency fault detect recorder, pass through analog signals pipeline
The analyses and comparison device being connected with described audio frequency fault detect recorder, described analyses and comparison device is connected with alarm, and leads to
Cross wireless network by short message sending to manager's mobile phone, complete fault verification.Whole system simple in construction, is directly anchored to equipment
On, received and processing equipment sound by audio frequency fault detect recorder, and with reference to carrying out related with reference to curve in curve library
Property comparison, and carry out warning reminding to abnormal curve, automatic fault detection replaced manual detection, save labour, efficiency
Higher, accuracy rate is higher.
As preferably, described audio frequency fault detect recorder includes front-end collection portion and end noise elimination portion, real-time to equipment
Sound is acquired, and is eliminated the impact of noise in environment by end noise elimination portion.
As preferably, described front-end collection portion includes transaudient trunnion and is positioned at the acquisition cavity at described transaudient trunnion rear, passes
Sound trunnion front end arranges and gathers fixing port, uses soft mucilage binding round mouth, it is possible to be fixed on the test point of equipment, acquisition cavity,
Transaudient trunnion inwall is transaudient wall, and for rigidity easily vibration material, easily that sound is incoming, the sound of collection is truer, noise shadow
Ring less, in described acquisition cavity, be provided with audio collection device and acoustic pressure collector.
As preferably, the cavity wall of described acquisition cavity includes sound insulation outer wall and transaudient inwall and is arranged on described sound insulation outer wall
And the vacuum chamber between described transaudient inwall, transaudient inwall is the inwall of transaudient trunnion, acquisition cavity, for rigidity thin material, can shake
Dynamic, vacuum chamber is wrapped in the cavity outside transaudient inwall, interior for vacuum, completely cuts off external noise, and the authenticity of result is more preferable.
As preferably, described end noise elimination portion includes the noise elimination cavity communicating with described acquisition cavity and by described noise elimination cavity with outward
The outer sound attenuation hole of boundary's connection, inserts the soft deadener of porous connection in noise elimination cavity;Noise elimination cavity inwall is deadener, outer wall
Sound insulating material, outer sound attenuation hole can use noise elimination blinds, and the isolation effect of environment noise is good to external world, and the sound collecting is trueer
Real.
It as preferably, is provided with connecting portion between described front-end collection portion and described end noise elimination portion, is arranged on described company
The interior sound attenuation hole meeting portion connects described acquisition cavity and described noise elimination cavity.
As preferably, described audio collection device include the sound insulation bolt being fixed in the cavity wall of described acquisition cavity, be positioned at described
Sound insulation bolt front end the audio perception device that extend in described acquisition cavity and be positioned at the audio signal of described sound insulation bolt rear end and turn
Parallel operation and audio output interface, in audio collection device socket joint to acquisition cavity, and fixed by sound insulation bolt, keep soundproof effect.
As preferably, described acoustic pressure collector includes the be fixed in the cavity wall of described acquisition cavity second sound insulation bolt, is positioned at
Described second sound insulation bolt front end the acoustic pressure perceptron that extend in described acquisition cavity and be positioned at the described second sound insulation bolt rear end
Sound pressure signal converter and acoustic pressure output interface, in acoustic pressure collector socket joint to acquisition cavity, and by second sound insulation bolt fix, protect
Hold soundproof effect.
As preferably, the perception face of described audio perception device and described acoustic pressure perceptron is perpendicular to described transaudient trunnion, right
The collecting effect of sound frequency and acoustic pressure is more preferable, and described acoustic pressure perceptron is positioned at the front of described audio perception device, closer to
Described transmission trunnion, the collection to frequency and acoustic pressure is more stable, and effect is more preferable, if audio perception device is as front, adopting of acoustic pressure
Very big impact received by collection, and if both are placed in parallel, both collecting effects are all poor, cause resultant error bigger.
The detection method of said detecting system, comprising:
(1) normal sound data acquisition and procession, obtains with reference to curve;
Described normal sound data include multiple period data, and described period data at least includes turn-on data, runs number
According to close data, different described period data after treatment, is formed with reference to curve library;
Described at least include with reference to curve audio frequency with reference to curve and acoustic pressure with reference to curve;
(2) live sound data acquisition and procession, obtains real-time curve;
Described real-time curve at least includes audio frequency real-time curve harmony pressure real-time curve;
(3) real-time curve is carrying out to when processing with reference to curve;
Comparison method is: first carry out audio frequency comparison, chooses audio frequency and carries out correlation comparison analysis with reference to curve, if data
Normally, then entrance is revised with reference to curve with reference to curve library;If data are abnormal, then carry out acoustic pressure comparison, select acoustic pressure ginseng
Carry out correlation comparison analysis according to curve, if data are normal, then still enter and revised with reference to curve with reference to curve library, if
Data are abnormal then enters alert program.
Equipment is detected by technique scheme by sound, and properly functioning sound carries out phase to real-time sound with equipment
The comparison of closing property, the sound of different time sections equipment, as comparison standard, is detected by selected frequency and acoustic pressure, it is judged that equipment is just
Whether normal, and simultaneously during detection, enrich constantly with reference to curve library, environmental factor can be prevented effectively from shadow is caused to result
Ringing, detection is simple, convenient, and accuracy rate is high, and testing cost is low, and efficiency is high.
By implementing technique scheme, the utility model detects foundation by sound as equipment fault, and selects sound
Frequency and acoustic pressure, result is more true and reliable, and detection program is simple, and whether the equipment that can simultaneously detect is normal under various states,
Detecting system simple in construction, low cost, good to collection detection, the judgement effect of sound, can be used for remote device management, assist people
Power management, as pre-detection process, is a kind of matching method of information-based wisdom management.
Brief description
Accompanying drawing 1 is detecting system schematic diagram in the utility model one embodiment;
Accompanying drawing 2 is accompanying drawing 1 sound intermediate frequency fault detect recorder schematic diagram;
Accompanying drawing 3 is accompanying drawing 2 sound intermediate frequency collector schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, the utility model is described in further detail.
Embodiment 1:
A kind of equipment fault audio frequency detection system, as shown in accompanying drawing the 1st, the 2nd, 3, including the 1st, audio frequency fault detect recorder passes through
The analyses and comparison device 4 that analog signals pipeline 2 is connected with described audio frequency fault detect recorder 3, described dress of analysing and comparing
Put 4 and be connected with alarm 5, and pass through wireless network by short message sending to manager's mobile phone, complete fault verification.Audio frequency fault is examined
Survey recorder 1 be fixed on equipment 10 to be detected or near.
Wherein, audio frequency fault detect recorder 1 includes front-end collection portion 11 and end noise elimination portion 12;Front-end collection portion 11 wraps
Including transaudient trunnion 101 and the acquisition cavity 102 being positioned at transaudient trunnion 101 rear, the cavity wall of acquisition cavity 102 includes sound insulation outer wall 1021
And transaudient inwall 1022 and the vacuum chamber 1023 being arranged between described sound insulation outer wall 1021 and described transaudient inwall 1022.Adopt
Collection is provided with audio collection device 103 and acoustic pressure collector 104 in chamber 102, and audio collection device 103 includes being fixed on described acquisition cavity
The 1031st, sound insulation bolt in the cavity wall of 102 insulates against sound bolt 1031 front end the audio perception device 1032 extending in described acquisition cavity 102
And it is positioned at audio-frequency signal converter 1033 and the audio output interface 1034 of described sound insulation bolt 1031 rear end.Acoustic pressure collector
It 104 the second sound insulation bolts including being fixed in the cavity wall of described acquisition cavity 102, is positioned at the described second sound insulation bolt front end and extend into
Acoustic pressure perceptron in described acquisition cavity 102 and be positioned at the sound pressure signal converter of the described second sound insulation bolt rear end and acoustic pressure is defeated
Outgoing interface.End noise elimination portion 12 includes the noise elimination cavity 121 communicating with described acquisition cavity 102 and by described noise elimination cavity 121 and the external world
The outer sound attenuation hole 122 of connection, is provided with connecting portion 13 between front-end collection portion 11 and described end noise elimination portion 12, is arranged on described
The interior sound attenuation hole 131 of connecting portion 13 connects described acquisition cavity 102 and described noise elimination cavity 121.
The perception face of audio perception device 1032 harmony pressure perceptron is perpendicular to described transaudient trunnion 101, and acoustic pressure perceptron
It is positioned at the front of audio perception device 1032, closer to described transmission trunnion 101.
Operation principle:
Being fixed on audio frequency fault detect recorder 1 on equipment to be detected, equipment all sends when starting, operating and closing
Sound;
Sound enters acquisition cavity 102 by transaudient trunnion 101, is obtained acoustic pressure data by the acoustic pressure collector 104 of front end, in
Between audio collection device 103 obtain voice data, acquisition cavity the 102nd, transaudient trunnion 101 inwall is transaudient wall, for rigidity easily vibration
Material, easily that sound is incoming, in acquisition cavity, the vacuum chamber of outside parcel, sound-proof wall are possible to prevent the dry of miscellaneous equipment sound
Disturb.Audio collection device the 103rd, acoustic pressure collector 104 socket joint is in acquisition cavity 102 and solid by sound insulation bolt 1031 and the second sound insulation bolt
Fixed, keep soundproof effect.
Sound continuation travels back, to end noise elimination portion 12, passed through interior sound attenuation hole 131, the effect of interior sound attenuation hole 131 before this
Being to prevent external voice incoming from end noise elimination portion 12, then entering noise elimination cavity 121, the interior deadener of noise elimination cavity 121 is basic
Eliminating sound, sound is spread to outside by outer sound attenuation hole 122 further, and outer sound attenuation hole effect is to prevent external voice from disappearing
Part divides incoming, and noise elimination wall can realize internal noise elimination, can isolate again external voice incoming.
Data are delivered to analyse and compare by audio collection device the 103rd, acoustic pressure collector 104 by analog signals pipeline 2
Device 3, by data record, and through the real-time comparison of data, it is determined whether need to report to the police, and as needed to report to the police, then wireless alarm is worked as
I.e. sound, and pass through wireless network by short message sending to manager's mobile phone, complete fault verification.
Detection method: after gathering data, first against audio frequency, according to different periods, chooses different audio frequency with reference to curve
Carry out correlation comparison analysis, as data are normal, then enter and revised with reference to curve with reference to curve library;If data are not just
Often, then enter the checking of next step acoustic pressure, according to the corresponding period, select acoustic pressure to carry out correlation comparison analysis with reference to curve, in full
According to normally, then still enter and revised with reference to curve with reference to curve library, but do mark of putting on record, with for future reference, if data are not just
Chang Ze is directly entered alert program.
Embodiment 2:
A kind of equipment fault audio frequency detection system, including audio frequency fault detect recorder is the 1st, by analog signals pipeline
The 2 analyses and comparison devices 4 being connected with described audio frequency fault detect recorder 3, described analyses and comparison device 4 is connected with alarm 5,
And pass through wireless network by short message sending to manager's mobile phone, complete fault verification.Audio frequency fault detect recorder 1 is fixed on to be treated
On detection equipment 10.
Wherein, audio frequency fault detect recorder 1 includes front-end collection portion 11 and end noise elimination portion 12;Front-end collection portion 11 wraps
Including transaudient trunnion 101 and the acquisition cavity 102 being positioned at transaudient trunnion 101 rear, the cavity wall of acquisition cavity 102 includes sound insulation outer wall 1021
And transaudient inwall 1022 and the vacuum chamber 1023 being arranged between described sound insulation outer wall 1021 and described transaudient inwall 1022.Adopt
Collection is provided with audio collection device 103 and acoustic pressure collector 104 in chamber 102, and audio collection device 103 includes being fixed on described acquisition cavity
The 1031st, sound insulation bolt in the cavity wall of 102 insulates against sound bolt 1031 front end the audio perception device 1032 extending in described acquisition cavity 102
And it is positioned at audio-frequency signal converter 1033 and the audio output interface 1034 of described sound insulation bolt 1031 rear end.Acoustic pressure collector
It 104 the second sound insulation bolts including being fixed in the cavity wall of described acquisition cavity 102, is positioned at the described second sound insulation bolt front end and extend into
Acoustic pressure perceptron in described acquisition cavity 102 and be positioned at the sound pressure signal converter of the described second sound insulation bolt rear end and acoustic pressure is defeated
Outgoing interface.End noise elimination portion 12 includes the noise elimination cavity 121 communicating with described acquisition cavity 102 and by described noise elimination cavity 121 and the external world
The outer sound attenuation hole 122 of connection, is provided with connecting portion 13 between front-end collection portion 11 and described end noise elimination portion 12, is arranged on described
The interior sound attenuation hole 131 of connecting portion 13 connects described acquisition cavity 102 and described noise elimination cavity 121.
The perception face of audio perception device 1032 harmony pressure perceptron is perpendicular to described transaudient trunnion 101, and acoustic pressure perceptron
It is positioned at the front of audio perception device 1032, closer to described transmission trunnion 101.
Detection method based on said detecting system, comprising:
(1) normal sound data acquisition and procession, obtains with reference to curve;
Described normal sound data include multiple period data, and described period data at least includes turn-on data, runs number
According to close data, different described period data after treatment, is formed with reference to curve library;Constantly there is normal sound number afterwards
If occurring, constantly correct to reference to curve, constantly expand with reference to curve library;
Described at least include with reference to curve audio frequency with reference to curve and acoustic pressure with reference to curve;
(2) live sound data acquisition and procession, obtains real-time curve;
Described real-time curve at least includes audio frequency real-time curve harmony pressure real-time curve;
(3) real-time curve is carrying out to when processing with reference to curve;
Comparison method is: first carry out audio frequency comparison, chooses audio frequency and carries out correlation comparison analysis with reference to curve, if data
Normally, then entrance is revised with reference to curve with reference to curve library;If data are abnormal, then carry out acoustic pressure comparison, select acoustic pressure ginseng
Carry out correlation comparison analysis according to curve, if data are normal, then still enter and revised with reference to curve with reference to curve library, if
Data are abnormal then enters alert program.