CN104863839B - A kind of automobile engine high pressure oil pump abnormal sound detection method and device - Google Patents
A kind of automobile engine high pressure oil pump abnormal sound detection method and device Download PDFInfo
- Publication number
- CN104863839B CN104863839B CN201410805028.2A CN201410805028A CN104863839B CN 104863839 B CN104863839 B CN 104863839B CN 201410805028 A CN201410805028 A CN 201410805028A CN 104863839 B CN104863839 B CN 104863839B
- Authority
- CN
- China
- Prior art keywords
- sound
- oil pump
- pressure oil
- signal
- abnormal sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 118
- 238000001514 detection method Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 230000003321 amplification Effects 0.000 claims abstract description 20
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 230000005236 sound signal Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 127
- 230000007257 malfunction Effects 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 5
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005055 memory storage Effects 0.000 description 3
- 230000002969 morbid Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Engines (AREA)
Abstract
A kind of automobile engine high pressure oil pump abnormal sound detection method, comprises the following steps：The voice signal from high-pressure oil pump is gathered with sound transducer, voice signal is converted into electric signal；The sound transducer is sequentially connected with amplifier, wave filter, A/D converter, computer, the electric signal after amplifier, the amplification of wave filter, filtering process by being transferred to A/D converter, the A/D converter carries out analog-to-digital conversion to the electric signal after treatment, and output digit signals are to computer；The computer prestores the data signal of operation sound under high-pressure oil pump normal condition, and receive the data signal after being changed through A/D converter, the data signal is analyzed treatment with pre-stored normal sound sampled digital signal, abnormal sound is determined whether with this.Solve the problems, such as of the prior art can not accurately and in time judge high-pressure oil pump of engine abnormal sound.
Description
Technical field
The present invention relates to the high-pressure oil pump abnormal sound in technical field of automobile engine, especially automobile engine fuel oil system
Detection method and device.
Background technology
Engine as automobile heart, its working condition decides the normal operation of automobile.Engine is in running
The abnormal sound specified more than technological document of middle generation, referred to as abnormal sound.Abnormal sound indicates engine some parts
Failure is there occurs, if fixing a breakdown not in time, bigger damage is likely to result in.
Only for the high-pressure oil pump in engine, under normal circumstances, because the open and close of needle can send regular
" rattling away " sound.But other irregular sound can be but sent sometimes, this just belongs to abnormal sound, if controlled not in time
Will become more acutely, to destroy mechanical organ.This abnormal sound by often being covered by engine operational sound, so cannot
Precisely judge that high-pressure oil pump whether there is abnormal sound in time.In addition, some human factors lead to not find that high-pressure oil pump is different in time
Ring, when bench test runs at high speed, whether staff cannot be introduced into each system of test bay monitoring engine to such as engine
There is abnormal sound.
At present, abnormal sound occurs in high-pressure oil pump is judged by human ear.Because engine is not allowed in bench test
Staff enters, and the engine that there is high-pressure oil pump abnormal sound is just found in complete vehicle test more.And due to individual difference,
Everyone judges there is certain difference to high-pressure oil pump abnormal sound, and this not only delays the high-pressure oil pump malfunction elimination time, also consumes
Take the substantial amounts of time and efforts of staff.Simultaneously because fault discovery is delayed so that more sick engines flow into whole
Car is tested, and increased maintenance difficulty and maintenance cost.
The content of the invention
Therefore, the technical problems to be solved by the invention are that of the prior art can not judge to start accurately and in time
The problem of machine high-pressure oil pump abnormal sound, so as to propose a kind of automobile engine high pressure oil pump abnormal sound detection method and device.
In order to solve the above technical problems, the present invention proposes a kind of automobile engine high pressure oil pump abnormal sound detection method including
Following steps：
The voice signal from high-pressure oil pump is gathered with sound transducer, voice signal is converted into electric signal；
The sound transducer is sequentially connected with amplifier, wave filter, A/D converter, computer, the electric signal warp
A/D converter is transferred to after crossing amplifier, the amplification of wave filter, filtering process, the A/D converter is to the electric signal after treatment
Analog-to-digital conversion is carried out, output digit signals are to computer；
The computer runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through A/D turns
Data signal after parallel operation conversion, treatment is analyzed by the data signal with pre-stored normal sound sampled digital signal,
Abnormal sound is determined whether with this.
If the judgement conclusion of computer sends fault pre-alarming prompting to there is abnormal sound.
Preferably, also gather the voice signal from high-pressure oil pump simultaneously using a sound pick-up, by the sound pick-up and earphone,
Acoustic memory is sequentially connected, and the earphone is used to monitor in real time the operation sound of high-pressure oil pump, the acoustic memory storage
High-pressure oil pump abnormal sound sound source.
When only with the sound transducer collected sound signal, the sound transducer is fixed on one near high pressure
On the fixed support that oil pump is placed；When using the sound transducer and sound pick-up collected sound signal simultaneously, by institute
State sound transducer and the sound pick-up is fixed on one and is close on the fixed support that high-pressure oil pump is placed together.
Preferably, the fixed support distance high-voltage oil pump is in the range of 50cm.
Preferably, it is described that the data signal is analyzed treatment with pre-stored normal sound sampled digital signal, with
This determines whether that the process of abnormal sound includes：
Data signal is stored as data flow；
The data flow is cut into the data slot of fixed size；
Sampled digital signal for the normal sound being pre-stored in each data slot, with computer carries out time domain phase
Close computing, and statistical correlation computing peak value；
The related operation peak value is compared with default first peak value, if related operation peak value is less than default the
One peak value, the record mark of generation one；
Record mark in one preset time section is counted, if the aggregate-value of the record mark is preset more than one
Threshold value, shows that the sound of current collection has significant difference with normal voice signal, is judged as abnormal sound.
The present invention also proposes a kind of automobile engine high pressure oil pump abnormal sound detection method, comprises the following steps：
The voice signal from high-pressure oil pump is gathered with the first sound transducer, the first voice signal for obtaining is converted into
First electric signal；
The voice signal from high-pressure oil pump surrounding environment is gathered with second sound sensor, the rising tone message that will be obtained
Number it is converted into the second electric signal；
By first sound transducer and the first amplifier, the first wave filter, the first A/D converter, computer successively
Connection, first electric signal turns by being transferred to an A/D after the first amplifier, the amplification of the first wave filter, filtering process
Parallel operation, first A/D converter carries out analog-to-digital conversion to the electric signal after treatment, exports the first data signal to computer；
By the second sound sensor and the second amplifier, the second wave filter, the second A/D converter, the computer
It is sequentially connected, second electric signal is described by being transferred to A/D converter after amplifier, the amplification of wave filter, filtering process
A/D converter carries out analog-to-digital conversion to the electric signal after treatment, exports the second data signal to computer；
The computer prestores the data signal that sound is run under high-pressure oil pump normal condition, and receive through first,
Second A/D converter change respectively after the first data signal, the second data signal, by first data signal, second numeral
Signal is analyzed treatment with pre-stored normal sound sampled digital signal, and abnormal sound is determined whether with this.
If the judgement conclusion of computer sends fault pre-alarming prompting to there is abnormal sound.
Preferably, also gather the voice signal from high-pressure oil pump simultaneously using a sound pick-up, by the sound pick-up and earphone,
Acoustic memory is sequentially connected, and the earphone is used to monitor in real time the operation sound of high-pressure oil pump, the acoustic memory storage
High-pressure oil pump abnormal sound sound source.
When using first sound transducer and second sound sensor collected sound signal simultaneously, by described first
Sound transducer is fixed on one on the fixed support that high-pressure oil pump is placed, and the second sound sensor is fixed on into one remote
From high-pressure oil pump place and with a distance from the first sound transducer preset distance another fixed support on；When using described the
First, second sound sensor and the sound pick-up simultaneously collected sound signal when, by first sound transducer and described pick up
Sound device be fixed on together one near high-pressure oil pump place fixed support on, by the second sound sensor be fixed on one away from
High-pressure oil pump is placed and on another fixed support of the first sound transducer preset distance.
Preferably, first sound transducer and the second sound sensor gather the in opposite direction of sound.
Preferably, the fixed support distance high-voltage oil pump is in the range of 50cm, and another fixed support distance is high
Pressure oil pump is in the range of 100cm-120cm and apart from the fixed support in the range of 50cm-70cm.
Preferably, it is described by first data signal, the second data signal and pre-stored normal sound sampling numeral letter
Number treatment is analyzed, is included with the process that this determines whether abnormal sound：
First data signal, the second data signal are stored as the first data flow and the second data flow；
Calculus of differences is done to the first data flow and the second data flow, the 3rd data flow is generated；
3rd data flow is cut into the data slot of fixed size；
Sampled digital signal for the normal sound being pre-stored in each data slot, with computer carries out time domain phase
Close computing, and statistical correlation computing peak value；
The related operation peak value is compared with default first peak value, if related operation peak value is less than default the
One peak value, the record mark of generation one；
Record mark in one preset time section is counted, if the aggregate-value of the record mark is preset more than one
Threshold value, shows that the sound of current collection has significant difference with normal voice signal, is judged as abnormal sound.
Include the invention provides a kind of automobile engine high pressure oil pump abnormal sound detection means：Sound transducer, amplifier,
Wave filter, A/D converter, computer；The sound transducer connects successively with amplifier, wave filter, A/D converter, computer
Connect, the sound transducer is used to gather the voice signal from high-pressure oil pump, and voice signal is converted into electric signal；The electricity
Signal by being transferred to A/D converter after amplifier, the amplification of wave filter, filtering process, after the A/D converter is to treatment
Electric signal carries out analog-to-digital conversion, and output digit signals are to computer；
The computer runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through A/D turns
Data signal after parallel operation conversion, treatment is analyzed by the data signal with pre-stored normal sound sampled digital signal,
Abnormal sound is determined whether with this.
Preferably, also including a sound pick-up, the sound pick-up gathers the voice signal from high-pressure oil pump, the sound pick-up simultaneously
It is sequentially connected with earphone, acoustic memory, the earphone is used to monitor in real time the operation sound of high-pressure oil pump, the sound storage
Device stores high-pressure oil pump abnormal sound sound source.
Present invention also offers a kind of automobile engine high pressure oil pump abnormal sound detection means, including：
First sound transducer, for gathering the voice signal from high-pressure oil pump, the first voice signal that will be obtained turns
Turn to the first electric signal；
Second sound sensor, for gathering the voice signal from high-pressure oil pump surrounding environment, the rising tone that will be obtained
Message number is converted into the second electric signal；
First sound transducer connects successively with the first amplifier, the first wave filter, the first A/D converter, computer
Connect, first electric signal is by being transferred to A/D conversions after the first amplifier, the amplification of the first wave filter, filtering process
Device, first A/D converter carries out analog-to-digital conversion to the electric signal after treatment, exports the first data signal to computer；
The second sound sensor and the second amplifier, the second wave filter, the second A/D converter, the computer according to
Secondary connection, second electric signal is by being transferred to A/D converter, the A/ after amplifier, the amplification of wave filter, filtering process
D converters carry out analog-to-digital conversion to the electric signal after treatment, export the second data signal to computer；
The computer prestores the data signal that sound is run under high-pressure oil pump normal condition, and receive through first,
Second A/D converter change respectively after the first data signal, the second data signal, by first data signal, second numeral
Signal is analyzed treatment with pre-stored normal sound sampled digital signal, and abnormal sound is determined whether with this.
Above-mentioned technical proposal of the invention has advantages below compared to existing technology：
(1) using high-pressure oil pump abnormal sound detection means can real-time monitoring high-pressure oil pump whether be in normal operating conditions,
There is the timely early warning of abnormal sound；
(2) hydraulic oil is accurately judged compared with high-pressure oil pump normal work sound by the voice signal of Real-time Collection
Whether pump there is abnormal sound；
(3) by increasing the sound transducer and its corresponding amplification, filtering and A/D change-over circuits of collection ambient noise,
The interference that environmental noise is detected to abnormal sound can be eliminated, accuracy in detection is improved.
(4) high-pressure oil pump abnormal sound detection means low cost, be easily installed, sensitivity it is high, improve abnormal sound detection efficiency, reduce
Maintenance cost.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, below according to specific embodiment of the invention and combine
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the automobile engine high pressure oil pump abnormal sound detection means of the embodiment of the present invention 1；
Fig. 2 is how to judge abnormal sound according to collection signal and pre-stored normal sound signal in the embodiment of the present invention 2
Method flow diagram；
Fig. 3 is the structural representation of the automobile engine high pressure oil pump abnormal sound detection means of the embodiment of the present invention 3；
Fig. 4 is the structural representation of the automobile engine high pressure oil pump abnormal sound detection means of the embodiment of the present invention 5.
Reference is expressed as in figure：The automobile engine high pressure oil pump abnormal sound detection means of 1- embodiments 1；2- embodiments
2 automobile engine high pressure oil pump abnormal sound detection means；The automobile engine high pressure oil pump abnormal sound detection means of 3- embodiments 3；
110th, 210,310,311- sound transducers；120th, 220,320,321- amplifiers；130th, 230,330,331- wave filters；140、
240th, 340,341-A/D converters；150th, 250,350- computers；160th, 260,360- prior-warning devices；270th, 370- sound pick-ups；
280th, 380- earphones
Specific embodiment
Embodiment 1
Fig. 1 is refer to, Fig. 1 is that the structure of the automobile engine high pressure oil pump abnormal sound detection means 1 of the embodiment of the present invention 1 is shown
It is intended to.
The embodiment of the present invention 1 provides a kind of automobile engine high pressure oil pump detection means 1, and the detection means 1 includes：Sound
Sensor 110, amplifier 120, wave filter 130, A/D converter 140, computer 150 and prior-warning device 160, the sound sensor
The output end of device 110 connects the input of amplifier 120, input, the filter of the output end connection wave filter 130 of amplifier 120
The output end of ripple device 130 connects the input of A/D converter 140, and the output end of A/D converter 140 connects the input of computer
End, the output end connection prior-warning device 160 of computer.
The sound transducer is fixed on one on the fixed support that high-pressure oil pump is placed, the fixed support with it is high
The distance of pressure oil pump is preferably in the range of 50cm.The sound transducer is used to gather the sound letter from high-pressure oil pump
Number, voice signal is converted into electric signal；The electric signal is transferred to by after amplifier, the amplification of wave filter, filtering process
A/D converter, the A/D converter carries out analog-to-digital conversion to the electric signal after treatment, and output digit signals are to computer.
The computer runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through A/D turns
Data signal after parallel operation conversion, treatment is analyzed by the data signal with pre-stored normal sound sampled digital signal,
Abnormal sound is determined whether with this.
The present embodiment is contrasted by measured signal and high-pressure oil pump normal signal, improves abnormal sound judging nicety rate.Pass through
Sound transducer real-time monitoring high-pressure oil pump working condition, produces abnormal sound to feed back to staff in time, is that malfunction elimination is saved
Time, it is to avoid high-pressure oil pump " morbid state " runs, high-pressure oil pump damaged condition is reduced, save production cost.Carried using prior-warning device
Show the malfunction of high-pressure oil pump, make detection more simple and clear.
Embodiment 2
The present embodiment 2 provides a kind of automobile engine high pressure oil pump abnormal sound detection method, and the detection method includes：Will be described
Sound transducer is fixed on one on the fixed support that high-pressure oil pump is placed, and the fixed support is excellent with the distance of high-pressure oil pump
Elect as in the range of 50cm.The sound transducer 110 is used to gather the voice signal from high-pressure oil pump, and voice signal is turned
Turn to electric signal；Amplifier 120 receives the signal that sound transducer 110 is transmitted, and is exported to wave filter after the signal is amplified
130；Wave filter 130 transmits a signal to A/D converter 140 after being filtered to signal, the electric signal being amplified and filtered
Data signal is converted to by A/D converter 140；A/D converter 140 is connected with computer 150；
The computer 150 runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through A/D
Data signal after the conversion of converter 140, the data signal is analyzed with pre-stored normal sound sampled digital signal
Treatment, abnormal sound is determined whether with this.
Specifically, Fig. 2 is refer to, the data signal is analyzed place with pre-stored normal sound sampled digital signal
Reason, is included with the process that this determines whether abnormal sound：
Computer gathers the output data of A/D converter 140 by data-interface, generates data flow, and do following place
Reason：
Data flow is cut into the data slot storage of fixed size, the record segment of such as 1 second.
Sampled digital signal for the normal sound being pre-stored in each data slot, with computer carries out time domain phase
Close computing, and statistical correlation computing peak value；
The related operation peak value is compared with default first peak value.If related operation peak value is less than default the
One peak value, the record mark of generation one；
Record mark in one preset time section (such as 20 seconds) is counted, if the aggregate-value of record mark is more than
One predetermined threshold value, shows that the sound of current collection has significant difference with normal voice signal, is considered as abnormal sound.
If abnormal sound, then fault pre-alarming prompting is sent.The mode of fault pre-alarming prompting for example can be connection computer
Early-warning lamp is lighted, can also be flashed by fault cues lamp audible alarm or by fault cues presentation of information on a display screen etc.
Fault cues mode reminds people that high-pressure oil pump of engine breaks down, in order to notify that staff is shut down to hydraulic oil in time
Pump is repaired.
The present embodiment is contrasted by measured signal and high-pressure oil pump normal signal, improves abnormal sound judging nicety rate.Pass through
Sound transducer real-time monitoring high-pressure oil pump working condition, produces abnormal sound to feed back to staff in time, is that malfunction elimination is saved
Time, it is to avoid high-pressure oil pump " morbid state " runs, high-pressure oil pump damaged condition is reduced, save production cost.Carried using prior-warning device
Show the malfunction of high-pressure oil pump, make detection more simple and clear.
Embodiment 3
Fig. 3 is refer to, Fig. 3 is that the structure of the automobile engine high pressure oil pump abnormal sound detection means 2 of the embodiment of the present invention 3 is shown
It is intended to.
Automobile engine high pressure oil pump detection means 2 in embodiments of the invention 3 is compared to the car engine in embodiment 1
Machine high-pressure oil pump detection means 1 increased sound pick-up 270 and earphone 280, the sound pick-up 270 and sound transducer 210 together by
One is fixed on the fixed support that high-pressure oil pump is placed, the fixed support is preferably in 50cm with the distance of high-pressure oil pump
In the range of.The sound pick-up 270 is also used for gathering the voice signal from high-pressure oil pump, and the earphone 280 for connecting sound pick-up 270 can
So that staff is monitored high-pressure oil pump operational sound in real time, and high-pressure oil pump abnormal sound sound source is stored, be later
High-pressure oil pump R＆D work provides reference.
Additionally, the phase in remaining part in the automobile engine high pressure oil pump detection means 2 of embodiment 3 and embodiment 1
Together, its operation principle is also identical, and referring specifically to the description of embodiment 1, here is omitted.
The present embodiment 3 is exported high-pressure oil pump abnormal sound by earphone by sound pick-up, substitutes ear detection abnormal sound, it is ensured that work
Make personnel's personal safety.
Embodiment 4
Embodiments of the invention 4 provide a kind of automobile engine high pressure oil pump detection method, the detection method and embodiment 2
In automobile engine high pressure oil pump detection method compare, difference is：High pressure is come from when being gathered using sound transducer
During the voice signal of oil pump, while be acquired to the voice signal using a sound pick-up, by the sound transducer and described
Sound pick-up is fixed on one on the fixed support that high-pressure oil pump is placed together；By the sound pick-up and earphone, acoustic memory according to
Secondary connection, the earphone is used to be monitored in real time for staff the operation sound of high-pressure oil pump, and the acoustic memory storage is high
Pressure oil pump abnormal sound sound source, for later high-pressure oil pump R＆D work provides reference.
Additionally, the phase in remaining step in the automobile engine high pressure oil pump detection method of embodiment 4 and embodiment 2
Together, referring specifically to the description of embodiment 2, here is omitted.
The present embodiment 4 is exported high-pressure oil pump abnormal sound by earphone by sound pick-up, substitutes ear detection abnormal sound, it is ensured that work
Make personnel's personal safety.
Embodiment 5
Fig. 4 is refer to, Fig. 4 is that the structure of the automobile engine high pressure oil pump abnormal sound detection means 3 of the embodiment of the present invention 5 is shown
It is intended to.
The automobile engine high pressure oil pump detection means 3 of the embodiment of the present invention 5 includes sound transducer 310,311, amplification
Device 320,321, wave filter 330,331, A/D converter 340,341, computer 350, prior-warning device 360, sound pick-up 370 and ear
Machine 380, the output end of the sound transducer 310 connects the input of amplifier 320, the output end connection filtering of amplifier 320
The input of device 330, the output end of wave filter 330 connect the input of A/D converter 340, the output end of A/D converter 340
Connect the input of computer 350；The output end of the sound transducer 311 connects the input of amplifier 321, amplifier 321
The output end connection input of wave filter 331, the output end of wave filter 331 connect the input of A/D converter 341, A/D turns
The output end of parallel operation 341 connects the input of computer 351, the output end connection prior-warning device 360 of computer 350；Sound pick-up
370 output end connects the input of earphone 380.
Wherein, sound transducer 310 and sound pick-up 370 are fixed on the fixed support placed near high-pressure oil pump together
On, the high-pressure oil pump described in support bracket fastened placement location preferred distance is in the range of 50cm.Sound transducer 311 is fixed
Placed away from high-pressure oil pump and on another fixed support of the preset distance of the sound transducer 310 one, and institute
State sound transducer 311 and sound transducer 310 gathers the in opposite direction of sound.Preferably, another fixed support distance
High-pressure oil pump is in the range of 100cm-120cm and apart from the fixed support in the range of 50cm-70cm.Set-up mode is not
It is limited to this, as long as it will be understood by those skilled in the art that by the position and direction of rationally placement sound transducer so that sound
Sensor 310 mainly gathers the voice signal from high-pressure oil pump, and mainly collection comes from around high-pressure oil pump sound transducer 311
The voice signal of environment.
The voice signal of collection is converted into the first electric signal by the sound transducer 310；First electric signal passes through
A/D converter 340,340 pairs for the treatment of of the A/D converter are transferred to after amplifier 320, the amplification of wave filter 330, filtering process
Electric signal afterwards carries out analog-to-digital conversion, exports the first data signal to computer 350.The sound transducer 311 by gather
Voice signal is converted into the second electric signal；Second electric signal is by amplifier 321, the amplification of wave filter 331, filtering process
After be transferred to A/D converter 341, the electric signal after 341 pairs for the treatment of of the A/D converter carries out analog-to-digital conversion, and output second is counted
Word signal is to computer 350.
The computer 350 runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through A/D
Converter 340,341 change respectively after the first data signal, the second data signal, by first data signal, second numeral
Signal is analyzed treatment with pre-stored normal sound sampled digital signal, and abnormal sound is determined whether with this.
Sound pick-up 370 is also used for gathering the voice signal from high-pressure oil pump, and the earphone 380 for connecting sound pick-up 370 can be with
High-pressure oil pump operational sound is monitored in real time for staff, and is stored high-pressure oil pump abnormal sound sound source, be later height
Pressure oil pump R＆D work provides reference.
The present embodiment using high-pressure oil pump abnormal sound detection means can real-time monitoring high-pressure oil pump whether be in normal work
, there is the timely early warning of abnormal sound in state；By the voice signal of Real-time Collection compared with high-pressure oil pump normal work sound, accurately
Judge whether high-pressure oil pump abnormal sound occurs；By the sound transducer and its corresponding amplification, the filtering that increase collection ambient noise
And A/D change-over circuits, the interference that environmental noise is detected to abnormal sound can be eliminated, improve accuracy in detection；High-pressure oil pump abnormal sound is examined
Survey installation cost it is low, be easily installed, sensitivity it is high, improve abnormal sound detection efficiency, reduce maintenance cost.
Embodiment 6
Embodiments of the invention 6 provide a kind of automobile engine high pressure oil pump detection method, the detection method and embodiment 4
In automobile engine high pressure oil pump detection method compare, difference is：When use sound transducer 310 and sound pick-up
During 370 voice signal of the collection from high-pressure oil pump, while using a sound transducer 311 to the sound of high-pressure oil pump surrounding environment
Sound is acquired, and sound transducer 311 is sequentially connected with amplifier 321, wave filter 331, A/D converter 341, by A/
The output of D converters 341 is connected with computer 350.Because the voice signal of the collection of sound transducer 311 includes the ring of surrounding
Border noise, can be eliminated or be partially removed the interference that noise is adjudicated abnormal sound by computing in a computer, so as to improve different
Ring the accuracy for judging.
The sound of high-pressure oil pump surrounding environment is acquired and processed because the detection method of the present embodiment increased, institute
The process step that is carried out and embodiment 4 have been received after the data signal from A/D converter 340,341 not with computer
Together, specific process step includes：
Computer 350 gathers the output data of A/D converter 340 and A/D converter 341 by data-interface, generates number
According to stream 1 and data flow 2, and do following treatment
Calculus of differences is done to data flow 1 and data flow 2, data flow 3 is generated, to eliminate the influence of environmental noise；
The data slot 4 that fixed size is cut into data flow 3 is stored, the record segment of such as 1 second.
To each data slot 4, the normal sound signal stored up with calculator memory carries out time-domain related calculation, and counts
Related operation peak value, is compared with default first peak value.If related operation peak value is less than default first peak value, generation
One record mark.
Record mark in one preset time section (such as 20 seconds) is counted, if the aggregate-value of record mark is more than
One predetermined threshold value, shows that the sound of current collection has significant difference with normal voice signal, is considered as abnormal sound.
If abnormal sound, then fault pre-alarming prompting is sent.The mode of fault pre-alarming prompting for example can be connection computer
Early-warning lamp is lighted, can also be flashed by fault cues lamp audible alarm or by fault cues presentation of information on a display screen etc.
Fault cues mode reminds people that high-pressure oil pump of engine breaks down, in order to notify that staff is shut down to hydraulic oil in time
Pump is repaired.
The present embodiment gathers sound transducer and its corresponding amplification, the filter of high-pressure oil pump ambient noise by increasing
Involve A/D change-over circuits, obtain the environmental noise around high-pressure oil pump, and the sound obtained with high-pressure oil pump sound transducer is believed
Number calculus of differences is carried out, the interference that environmental noise is detected to abnormal sound can be eliminated, improve accuracy in detection.By sound transducer
Real-time monitoring high-pressure oil pump working condition, produces abnormal sound to feed back to staff in time, is time-consuming malfunction elimination, it is to avoid high
Pressure oil pump " morbid state " runs, and reduces high-pressure oil pump damaged condition, saves production cost.Using prior-warning device prompting high-pressure oil pump
Malfunction, makes detection more simple and clear.
Additionally, the phase in remaining step in the automobile engine high pressure oil pump detection method of embodiment 6 and embodiment 4
Together, referring specifically to the description of embodiment 4, here is omitted.
Obviously, above-described embodiment is only deemed as clearly demonstrating example, and not to the restriction of implementation method.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (21)
1. a kind of automobile engine high pressure oil pump abnormal sound detection method, it is characterised in that comprise the following steps：
The voice signal from high-pressure oil pump is gathered with sound transducer, voice signal is converted into electric signal；
The sound transducer is sequentially connected with amplifier, wave filter, A/D converter, computer, the electric signal is by putting
A/D converter is transferred to after big device, the amplification of wave filter, filtering process, the A/D converter is carried out to the electric signal after treatment
Analog-to-digital conversion, output digit signals are to computer；
The computer runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through A/D converter
Data signal after conversion, is analyzed treatment, with this by the data signal with pre-stored normal sound sampled digital signal
Determine whether abnormal sound；Wherein
It is described that the data signal is analyzed treatment with pre-stored normal sound sampled digital signal, determined whether with this
The process of abnormal sound includes：
Data signal is stored as data flow；
The data flow is cut into the data slot of fixed size；
For each data slot, carry out that time domain is related to transport to the sampled digital signal of the normal sound being pre-stored in computer
Calculate, and statistical correlation computing peak value；
The related operation peak value is compared with default first peak value, if related operation peak value is less than default first peak
Value, the record mark of generation one；
Record mark in one preset time section is counted, if the aggregate-value of the record mark is more than a default threshold
Value, shows that the sound of current collection has significant difference with normal voice signal, is judged as abnormal sound.
2. automobile engine high pressure oil pump abnormal sound detection method as claimed in claim 1, it is characterised in that：If computer is sentenced
Disconnected conclusion then sends fault pre-alarming prompting to there is abnormal sound.
3. automobile engine high pressure oil pump abnormal sound detection method as claimed in claim 1, it is characterised in that：Also use a pickup
Device gathers the voice signal from high-pressure oil pump simultaneously, the sound pick-up is sequentially connected with earphone, acoustic memory, the earphone
Operation sound for monitoring high-pressure oil pump in real time, the acoustic memory stores high-pressure oil pump abnormal sound sound source.
4. the automobile engine high pressure oil pump abnormal sound detection method as described in claim any one of 1-3, it is characterised in that：When only
During using the sound transducer collected sound signal, the sound transducer is fixed on one near consolidating that high-pressure oil pump is placed
On fixed rack.
5. automobile engine high pressure oil pump abnormal sound detection method as claimed in claim 4, it is characterised in that：The fixed support
Distance high-voltage oil pump is in the range of 50cm.
6. automobile engine high pressure oil pump abnormal sound detection method as claimed in claim 3, it is characterised in that：When using the sound
Sound sensor and the sound pick-up simultaneously collected sound signal when, the sound transducer and the sound pick-up are fixed on together
One on the fixed support that high-pressure oil pump is placed.
7. automobile engine high pressure oil pump abnormal sound detection method as claimed in claim 6, it is characterised in that：The fixed support
Distance high-voltage oil pump is in the range of 50cm.
8. a kind of automobile engine high pressure oil pump abnormal sound detection method, it is characterised in that comprise the following steps：
The voice signal from high-pressure oil pump is gathered with the first sound transducer, the first voice signal for obtaining is converted into first
Electric signal；
The voice signal from high-pressure oil pump surrounding environment is gathered with second sound sensor, the second sound signal that will be obtained turns
Turn to the second electric signal；
First sound transducer is sequentially connected with the first amplifier, the first wave filter, the first A/D converter, computer,
First electric signal by being transferred to the first A/D converter after the first amplifier, the amplification of the first wave filter, filtering process,
First A/D converter carries out analog-to-digital conversion to the electric signal after treatment, exports the first data signal to computer；
By the second sound sensor and the second amplifier, the second wave filter, the second A/D converter, the computer successively
Connection, second electric signal is by being transferred to A/D converter, the A/D after amplifier, the amplification of wave filter, filtering process
Converter carries out analog-to-digital conversion to the electric signal after treatment, exports the second data signal to computer；
The computer runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through first, second
A/D converter change respectively after the first data signal, the second data signal, by first data signal, the second data signal
Treatment is analyzed with pre-stored normal sound sampled digital signal, abnormal sound is determined whether with this.
9. automobile engine high pressure oil pump abnormal sound detection method as claimed in claim 8, it is characterised in that：If computer is sentenced
Disconnected conclusion then sends fault pre-alarming prompting to there is abnormal sound.
10. automobile engine high pressure oil pump abnormal sound detection method as claimed in claim 8, it is characterised in that：Also use 10
Sound device gathers the voice signal from high-pressure oil pump simultaneously, the sound pick-up is sequentially connected with earphone, acoustic memory, the ear
Machine is used to monitor in real time the operation sound of high-pressure oil pump, and the acoustic memory stores high-pressure oil pump abnormal sound sound source.
The 11. automobile engine high pressure oil pump abnormal sound detection method as described in claim any one of 8-10, it is characterised in that：When
Using first sound transducer and second sound sensor simultaneously collected sound signal when, by first sound transducer
One is fixed on the fixed support that high-pressure oil pump is placed, the second sound sensor is fixed on one away from high-pressure oil pump
Place and on another fixed support of the first sound transducer preset distance.
12. automobile engine high pressure oil pump abnormal sound detection methods as claimed in claim 11, it is characterised in that：First sound
Sound sensor and the second sound sensor gather the in opposite direction of sound.
13. automobile engine high pressure oil pump abnormal sound detection methods as claimed in claim 11, it is characterised in that：The fixed branch
Frame distance high-voltage oil pump in the range of 50cm, scope of another fixed support distance high-voltage oil pump in 100cm-120cm
It is interior and apart from the fixed support in the range of 50cm-70cm.
14. automobile engine high pressure oil pump abnormal sound detection methods as claimed in claim 10, it is characterised in that：When using described
First, second sound transducer and the sound pick-up simultaneously collected sound signal when, by first sound transducer and described
Sound pick-up is fixed on one on the fixed support that high-pressure oil pump is placed together, the second sound sensor is fixed on into one remote
From high-pressure oil pump place and with a distance from the first sound transducer preset distance another fixed support on.
15. automobile engine high pressure oil pump abnormal sound detection methods as claimed in claim 14, it is characterised in that：First sound
Sound sensor and the second sound sensor gather the in opposite direction of sound.
16. automobile engine high pressure oil pump abnormal sound detection methods as claimed in claim 14, it is characterised in that：The fixed branch
Frame distance high-voltage oil pump in the range of 50cm, scope of another fixed support distance high-voltage oil pump in 100cm-120cm
It is interior and apart from the fixed support in the range of 50cm-70cm.
The 17. automobile engine high pressure oil pump abnormal sound detection method as described in any one of claim 8-10,12-16, its feature
It is, it is described to be analyzed first data signal, the second data signal and pre-stored normal sound sampled digital signal
Treatment, is included with the process that this determines whether abnormal sound：
First data signal, the second data signal are stored as the first data flow and the second data flow；
Calculus of differences is done to the first data flow and the second data flow, the 3rd data flow is generated；
3rd data flow is cut into the data slot of fixed size；
For each data slot, carry out that time domain is related to transport to the sampled digital signal of the normal sound being pre-stored in computer
Calculate, and statistical correlation computing peak value；
The related operation peak value is compared with default first peak value, if related operation peak value is less than default first peak
Value, the record mark of generation one；
Record mark in one preset time section is counted, if the aggregate-value of the record mark is more than a default threshold
Value, shows that the sound of current collection has significant difference with normal voice signal, is judged as abnormal sound.
18. automobile engine high pressure oil pump abnormal sound detection methods as claimed in claim 11, it is characterised in that it is described by this
One data signal, the second data signal are analyzed treatment with pre-stored normal sound sampled digital signal, judged with this be
The no process for abnormal sound includes：
First data signal, the second data signal are stored as the first data flow and the second data flow；
Calculus of differences is done to the first data flow and the second data flow, the 3rd data flow is generated；
3rd data flow is cut into the data slot of fixed size；
For each data slot, carry out that time domain is related to transport to the sampled digital signal of the normal sound being pre-stored in computer
Calculate, and statistical correlation computing peak value；
The related operation peak value is compared with default first peak value, if related operation peak value is less than default first peak
Value, the record mark of generation one；
Record mark in one preset time section is counted, if the aggregate-value of the record mark is more than a default threshold
Value, shows that the sound of current collection has significant difference with normal voice signal, is judged as abnormal sound.
A kind of 19. automobile engine high pressure oil pump abnormal sound detection means, it is characterised in that including：Sound transducer, amplifier,
Wave filter, A/D converter, computer；The sound transducer connects successively with amplifier, wave filter, A/D converter, computer
Connect, the sound transducer is used to gather the voice signal from high-pressure oil pump, and voice signal is converted into electric signal；The electricity
Signal by being transferred to A/D converter after amplifier, the amplification of wave filter, filtering process, after the A/D converter is to treatment
Electric signal carries out analog-to-digital conversion, and output digit signals are to computer；
The computer runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through A/D converter
Data signal after conversion, is analyzed treatment, with this by the data signal with pre-stored normal sound sampled digital signal
Determine whether abnormal sound；Wherein
It is described that the data signal is analyzed treatment with pre-stored normal sound sampled digital signal, determined whether with this
The process of abnormal sound includes：
Data signal is stored as data flow；
The data flow is cut into the data slot of fixed size；
For each data slot, carry out that time domain is related to transport to the sampled digital signal of the normal sound being pre-stored in computer
Calculate, and statistical correlation computing peak value；
The related operation peak value is compared with default first peak value, if related operation peak value is less than default first peak
Value, the record mark of generation one；
Record mark in one preset time section is counted, if the aggregate-value of the record mark is more than a default threshold
Value, shows that the sound of current collection has significant difference with normal voice signal, is judged as abnormal sound.
20. automobile engine high pressure oil pump abnormal sound detection means as claimed in claim 19, it is characterised in that：Also include 10
Sound device, the sound pick-up gathers the voice signal from high-pressure oil pump simultaneously, and the sound pick-up connects successively with earphone, acoustic memory
Connect, the earphone is used to monitor in real time the operation sound of high-pressure oil pump, the acoustic memory stores high-pressure oil pump abnormal sound sound
Source.
A kind of 21. automobile engine high pressure oil pump abnormal sound detection means, it is characterised in that including：
First sound transducer, for gathering the voice signal from high-pressure oil pump, the first voice signal for obtaining is converted into
First electric signal；
Second sound sensor, for gathering the voice signal from high-pressure oil pump surrounding environment, the rising tone message that will be obtained
Number it is converted into the second electric signal；
First sound transducer is sequentially connected with the first amplifier, the first wave filter, the first A/D converter, computer, institute
The first electric signal is stated by being transferred to the first A/D converter, institute after the first amplifier, the amplification of the first wave filter, filtering process
State the first A/D converter carries out analog-to-digital conversion to the electric signal after treatment, exports the first data signal to computer；
The second sound sensor connects successively with the second amplifier, the second wave filter, the second A/D converter, the computer
Connect, second electric signal turns by being transferred to A/D converter, the A/D after amplifier, the amplification of wave filter, filtering process
Parallel operation carries out analog-to-digital conversion to the electric signal after treatment, exports the second data signal to computer；
The computer runs the data signal of sound under prestoring high-pressure oil pump normal condition, and receives through first, second
A/D converter change respectively after the first data signal, the second data signal, by first data signal, the second data signal
Treatment is analyzed with pre-stored normal sound sampled digital signal, abnormal sound is determined whether with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805028.2A CN104863839B (en) | 2014-12-19 | 2014-12-19 | A kind of automobile engine high pressure oil pump abnormal sound detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805028.2A CN104863839B (en) | 2014-12-19 | 2014-12-19 | A kind of automobile engine high pressure oil pump abnormal sound detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104863839A CN104863839A (en) | 2015-08-26 |
| CN104863839B true CN104863839B (en) | 2017-06-06 |
Family
ID=53909926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410805028.2A Active CN104863839B (en) | 2014-12-19 | 2014-12-19 | A kind of automobile engine high pressure oil pump abnormal sound detection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104863839B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675306B (en) * | 2016-01-12 | 2018-08-10 | 天津理工大学 | A kind of automobile self-sensing method and detecting system |
| CN107304750B (en) * | 2016-04-18 | 2019-04-02 | 北京金风科创风电设备有限公司 | Abnormal sound detection method and system for tower of wind generating set |
| CN106401937B (en) * | 2016-09-30 | 2018-12-25 | 联合汽车电子有限公司 | Oil pump noise test equipment and test method |
| CN108784932A (en) * | 2017-05-02 | 2018-11-13 | 中国石油化工股份有限公司 | A kind of preventing noise ear cover based on spectrum analysis |
| CN108390515A (en) * | 2018-04-08 | 2018-08-10 | 天津宏捷安装工程有限公司 | A kind of the protection system and its application method of bearing of motor |
| CN109356837B (en) * | 2018-09-30 | 2020-04-24 | 赛腾机电科技（常州）有限公司 | Plunger pump fault analysis method and analysis device |
| CN109580268A (en) * | 2018-12-22 | 2019-04-05 | 西安瑞联工业智能技术有限公司 | A kind of product abnormal sound, abnormal sound intelligent detecting method |
| CN110630499B (en) * | 2019-10-12 | 2020-10-16 | 重庆建设车用空调器有限责任公司 | Method for judging whether abnormal sound is caused by rotary vane compressor |
| CN112268614A (en) * | 2020-10-28 | 2021-01-26 | 深圳市泰祺科技有限公司 | Automobile monitoring method and system |
| CN113250961B (en) * | 2021-05-10 | 2023-05-23 | 广东葆德科技有限公司 | Compressor fault detection method and system |
| CN115839335B (en) * | 2023-02-15 | 2023-05-26 | 四川省机械研究设计院(集团)有限公司 | Water pump test bench and test method |
| CN117310320B (en) * | 2023-09-25 | 2024-09-10 | 国网山东省电力公司莘县供电公司 | Portable high-voltage equipment fault sound inspection device and fault detection method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6061441B2 (en) * | 2010-11-24 | 2017-01-18 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー（ホンコン）リミテッド | Air conditioner |
| CN102072144A (en) * | 2011-03-11 | 2011-05-25 | 大连大学 | Vibration and noise online monitoring and fault diagnosis system of scroll compressor |
| CN102680233A (en) * | 2011-03-17 | 2012-09-19 | 北汽福田汽车股份有限公司 | Motor failure diagnosis device and method |
| CN103075333A (en) * | 2012-12-29 | 2013-05-01 | 中国科学院沈阳科学仪器股份有限公司 | Noise monitoring and protection device and method for bearing of oilless vacuum pump |
| CN203670182U (en) * | 2013-12-26 | 2014-06-25 | 江苏大学 | Device for detecting unsteady flow of small-flow working condition of centrifugal pump based on acoustic emission technology |
| CN104122094B (en) * | 2014-07-29 | 2016-06-29 | 南通理工学院 | Abnormal sound fault diagnosis device and method for engine |
-
2014
- 2014-12-19 CN CN201410805028.2A patent/CN104863839B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104863839A (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104863839B (en) | A kind of automobile engine high pressure oil pump abnormal sound detection method and device | |
| CN102416970B (en) | knock detection method of on-line steel rail fracture monitoring system | |
| JP5783551B2 (en) | Elevator abnormal sound detection device | |
| CN109616140B (en) | Abnormal sound analysis system | |
| CN202083555U (en) | System for extracting and diagnosing fault feature of gasoline engine | |
| CN102547526B (en) | Real-time monitoring method and system of microphone working state | |
| CN106063065A (en) | Devices and methods for arc fault detection | |
| CN106546892A (en) | The recognition methodss of shelf depreciation ultrasonic audio and system based on deep learning | |
| EP1816451A3 (en) | Abnormality diagnosing method for sound or vibration and abnormality diagnosing apparatus for sound or vibration. | |
| WO2009155132A3 (en) | Fuel system diagnostics by analyzing engine cylinder pressure signal and crankshaft speed signal | |
| CN102680233A (en) | Motor failure diagnosis device and method | |
| CN102103036A (en) | Automobile engine fault diagnosis system based on vibration and audio frequency information | |
| CN202110228U (en) | Insulator fault detection instrument | |
| CN105136278A (en) | Bearing system acoustic fault detection device | |
| CN102788671A (en) | Structure failure mode diagnosing method on basis of sound spectrum of spacecraft vibration test | |
| US20120130607A1 (en) | Method for early detection of damage in a motor vehicle transmission | |
| CN103852338A (en) | Abnormal noise fault detection method for air purifier | |
| CN111301489A (en) | Method for monitoring track cracks on line | |
| CN113516023B (en) | Method and system for diagnosing equipment vibration abnormality | |
| KR100665879B1 (en) | Apparatus for finding and processing partial discharge in power equipments | |
| CN105866645A (en) | Method and device for diagnosing power generator discharge faults according to noise characteristic frequency bands | |
| CN201314870Y (en) | Abnormal sound analyzer of engine | |
| KR101641269B1 (en) | Partial discharge diagnostic system using emf sensor and acoustic sensor | |
| CN208140250U (en) | Noise detection system in 8 road car of one kind | |
| CN102661779A (en) | Comprehensive diagnosis system of shaking faults |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180517 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing treasure Car Co.,Ltd. Address before: 102206, Beijing, Shahe Town, Changping District Road, sand Yang Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing baowo Automobile Co.,Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing treasure Car Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method and device for detecting abnormal sound of high pressure oil pump of automobile engine Effective date of registration: 20211213 Granted publication date: 20170606 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd. Registration number: Y2021990001167 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230925 Granted publication date: 20170606 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231015 Address after: 102206, Beijing, Shahe, Changping District Town, Sha Yang Road, Lao Wan Village North Patentee after: BEIQI FOTON MOTOR Co.,Ltd. Address before: 101300 Shuanghe Street, Shunyi District, Beijing, 99 Patentee before: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Effective date of registration: 20231015 Address after: 101300 Shuanghe Street, Shunyi District, Beijing, 99 Patentee after: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing baowo Automobile Co.,Ltd. |