CN104879294B - A kind of water pump transient signal analytical equipment and method - Google Patents
A kind of water pump transient signal analytical equipment and method Download PDFInfo
- Publication number
- CN104879294B CN104879294B CN201510175603.XA CN201510175603A CN104879294B CN 104879294 B CN104879294 B CN 104879294B CN 201510175603 A CN201510175603 A CN 201510175603A CN 104879294 B CN104879294 B CN 104879294B
- Authority
- CN
- China
- Prior art keywords
- signal
- dynamic
- voltage
- current
- digital
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 230000001052 transient effect Effects 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000004458 analytical method Methods 0.000 claims description 62
- 238000001914 filtration Methods 0.000 claims description 15
- 238000010183 spectrum analysis Methods 0.000 claims description 7
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000010349 pulsation Effects 0.000 description 12
- 230000001133 acceleration Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000004540 process dynamic Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of water pump transient signal analytical equipment and method, the device includes：For gathering the signal gathering unit of transient signal, the AD conversion unit for switching transient state signal, signal processing unit and display unit for analyzing transient signal.The present invention passes through integrated signal collecting unit, AD conversion unit and signal processing unit, can synchronous recording, processing and display water pump transient signal, avoid the technical problem that the sensor interface of unlike signal type in the prior art is inconsistent, and field connection confusion is easily made mistakes and wiring carrying is difficult；The present invention can also record and handle Dynamic Signal while recording voltage signal and current signal simultaneously.
Description
Technical Field
The invention relates to the technical field of monitoring of water pumps and water pump stations, in particular to a device and a method for analyzing transient signals of a water pump.
Background
At present, the transient signal monitoring of the water pumping station is mainly based on the hydraulic mechanical vibration and pulsation field test protocol (GB 17189-1997). The regulation only requires the hydraulic machine (particularly, a water turbine) to detect the peak value of the pressure pulsation, but the water pump does not specify in detail the location where the pressure pulsation value needs to be detected and how to evaluate the pressure pulsation value. In addition, at present, all pressure pulsation detection signals are processed separately from detection signals such as vibration and noise, and a method and a device capable of synchronously recording and processing transient signal analysis of the water pump are lacked.
With the development of modern electronic sensors and computer technologies, sensors such as high-precision dynamic signal acceleration sensors, voltage signal speed sensors, high-frequency piezoresistive current signal pressure pulsation sensors and the like are increasingly applied to water station sites. The sensors with different signal types often have inconsistent connecting line interfaces, so that the problems of multiple field wiring, high error possibility, difficulty in carrying and the like are caused. And each signal needs to be measured respectively, and then the summary arrangement is finally carried out, so that the relation analysis between the transient signals of the water pump is difficult, more manpower is required, and the operation and management of data are quite inconvenient.
At present, testing equipment for multi-channel water pumps and water pumping stations is available, but most of the testing equipment is only based on current signals or voltage signals, and most of the testing equipment focuses on external characteristics such as pressure, flow, rotating speed and torque.
Disclosure of Invention
The invention aims to solve the technical problem of how to synchronously record and process the transient signals of the water pump.
For the purpose, the invention provides a water pump transient signal analysis device and method capable of synchronously recording and processing a water pump transient signal.
The invention provides a water pump transient signal analysis device, comprising:
the signal acquisition unit is used for acquiring at least one transient signal of the target water pump, wherein the transient signal is a dynamic signal and/or a current signal and/or a voltage signal;
the analog-to-digital conversion unit is used for respectively converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal and/or a current digital signal and/or a voltage digital signal;
the signal processing unit is used for carrying out time domain analysis, frequency domain analysis and time-frequency joint analysis on the dynamic digital signal and/or the current digital signal and/or the voltage digital signal;
and the display unit is used for displaying the analysis result of the signal processing unit on the dynamic digital signal, the current digital signal and the voltage digital signal.
Optionally, the signal acquisition unit includes: the device comprises a dynamic signal receiving channel, a current signal receiving channel and a voltage signal receiving channel;
the analog-to-digital conversion unit includes: the dynamic signal acquisition card, the current signal acquisition card and the voltage signal acquisition card.
Optionally, the dynamic signal acquisition card, the current signal acquisition card and the voltage signal acquisition card each include a signal conditioning unit, a signal filtering unit and an analog-to-digital conversion unit; wherein,
the signal conditioning unit is used for amplifying the dynamic signal and/or the current signal and/or the voltage signal;
the signal filtering unit is used for filtering the dynamic signal and/or the current signal and/or the voltage signal;
the analog-to-digital conversion unit is used for converting the dynamic signal, the current signal and the voltage signal filtered by the signal filtering unit into a dynamic digital signal, a current digital signal and a voltage digital signal.
Optionally, the dynamic signal comprises a signal that requires an excitation to change.
Optionally, the signal processing unit includes a time domain analyzing unit, a spectrum analyzing unit, and a time-frequency analyzing unit; wherein,
the time domain analysis unit is used for analyzing the average value, effective value, kurtosis value and 97% confidence coefficient peak-to-peak value of the dynamic signal, the current signal and the voltage signal;
the frequency spectrum analysis unit is used for analyzing and analyzing a first main frequency, a second main frequency, a third main frequency and the amplitude of the dynamic signal, the current signal and the voltage signal;
and the time-frequency analysis unit is used for analyzing the change conditions of the main frequencies of the dynamic digital signals, the current digital signals and the voltage digital signals along with time.
The invention also provides a water pump transient signal analysis method, which comprises the following steps:
collecting at least one transient signal of a target water pump, wherein the transient signal is a dynamic signal and/or a current signal and/or a voltage signal;
converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal and/or a current digital signal and/or a voltage digital signal, respectively;
performing time domain analysis, frequency domain analysis and time-frequency joint analysis on the dynamic digital signals and/or the current digital signals and/or the voltage digital signals;
and displaying the analysis result of the dynamic digital signal and/or the current digital signal and/or the voltage digital signal.
Optionally, the receiving the dynamic signal and/or the current signal and/or the voltage signal sent by the external sensor includes:
receiving a dynamic signal of the target water pump through a dynamic signal receiving channel;
receiving a current signal of the target water pump through a current signal receiving channel;
receiving a voltage signal sent by the target water pump through a voltage signal receiving channel;
the converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal and/or a current digital signal and/or a voltage digital signal, respectively, comprises: and respectively converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal through an analog-to-digital conversion unit.
Optionally, the converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal, a current digital signal and a voltage digital signal respectively includes:
amplifying the dynamic signal and/or current signal and/or voltage signal;
filtering the dynamic signal and/or the current signal and/or the voltage signal;
and converting the filtered dynamic signal and/or current signal and/or voltage signal into a dynamic digital signal and/or current digital signal and/or voltage digital signal.
Optionally, the dynamic signal comprises a signal that requires an excitation to change.
Optionally, the performing time-domain analysis, frequency-domain analysis and time-frequency joint analysis on the dynamic digital signal and/or the current digital signal and/or the voltage digital signal includes:
analyzing the average value, effective value, kurtosis value and 97% confidence peak-to-peak value of the dynamic digital signal and/or the current digital signal and/or the voltage digital signal;
respectively analyzing a first main frequency, a second main frequency, a third main frequency and amplitudes of the dynamic digital signal and/or the current digital signal and the voltage digital signal;
and respectively analyzing the change of the main frequency of the dynamic digital signal and/or the current digital signal and/or the voltage digital signal along with the time.
The invention discloses a device and a method for analyzing transient signals of a water pump, wherein the device can synchronously record, process and display transient signals of the water pump by integrating a signal acquisition unit, an analog-to-digital conversion unit and a signal processing unit, thereby avoiding the technical problems that in the prior art, the interfaces of sensors with different signal types are inconsistent, the field wiring is disordered and is easy to go wrong, and the wiring is difficult to carry; meanwhile, the invention can record and process dynamic signals while recording voltage signals and current signals.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a schematic structural diagram of a water pump transient signal analysis device according to an embodiment of the invention;
fig. 2 is a schematic signal flow diagram of a water pump transient signal analysis device and a water pump according to an embodiment of the invention;
fig. 3 is a schematic flow chart of a method for analyzing a transient signal of a water pump according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
A water pump transient signal analysis device, as shown in fig. 1, comprising:
the signal acquisition unit 11 is used for acquiring at least one transient signal of the target water pump, wherein the transient signal is a dynamic signal and/or a current signal and/or a voltage signal;
an analog-to-digital conversion unit 12 for converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal and/or a current digital signal and/or a voltage digital signal, respectively;
the signal processing unit 13 is configured to perform time domain analysis, frequency domain analysis and time-frequency joint analysis on the dynamic digital signal and/or the current digital signal and/or the voltage digital signal;
and the display unit 14 is used for displaying the analyzed result of the dynamic digital signal, the current digital signal and the voltage digital signal by the signal processing unit.
The water pump transient signal analysis device disclosed by the embodiment can synchronously record and process the water pump transient signal by adopting the unified signal acquisition unit, the analog-to-digital conversion unit and the signal processing unit, and avoids the technical problems that in the prior art, sensor interfaces of different signal types are inconsistent, so that field wiring is disordered and is easy to go wrong and wiring is difficult to carry. In addition, the dynamic signal can be recorded and processed at the same time when the voltage signal and the current signal are recorded.
Specifically, the signal acquisition unit includes: the device comprises a dynamic signal receiving channel, a current signal receiving channel and a voltage signal receiving channel; the number of the dynamic signal receiving channels can be 8, the number of the current signal receiving channels can be 8, and the number of the voltage signal receiving channels can be 8; the interfaces of the dynamic signal receiving channel, the current signal receiving channel and the voltage signal receiving channel are four-pin aviation plug interfaces or coaxial cable interfaces. The target water pump is provided with a plurality of sensors capable of measuring various parameters, for example, an acceleration sensor, a pressure pulsation sensor, a sound level meter, and the like, for measuring a pump body vibration signal, a pressure pulsation signal, a noise signal, and the like. Each sensor may generate a dynamic signal or a voltage signal or a current signal, which are transient signals, each transient signal corresponding to one of the dynamic signal receiving channel, the current signal receiving channel, and the voltage signal receiving channel.
In the experimental process of this embodiment, the number of voltage signal receiving channels actually used may be 6, and other 2 voltage signal receiving channels may be set as alternatives, so that a sensor is added when the target water pump is improved in the later stage, and the voltage signal sent by the added sensor is received; the current signal receiving channel and the voltage signal receiving channel are similar to each other, and are not described in detail herein.
Specifically, the analog-to-digital conversion unit includes: the dynamic signal acquisition card, the current signal acquisition card and the voltage signal acquisition card.
Each dynamic signal acquisition card, each current signal acquisition card and each voltage signal acquisition card comprise a signal conditioning unit, a signal filtering unit and an analog-to-digital conversion unit; the model of the dynamic signal acquisition card is NI 9234, the model of the current signal acquisition card is NI 9203, and the model of the voltage signal acquisition card is NI 9201.
Wherein,
the signal conditioning unit is used for amplifying the dynamic signal and/or the current signal and/or the voltage signal;
the signal filtering unit is used for filtering the dynamic signal and/or the current signal and/or the voltage signal;
and the analog-to-digital conversion unit is used for converting the dynamic signal and/or the current signal and/or the voltage signal filtered by the signal filtering unit into a dynamic digital signal and/or a current digital signal and/or a voltage digital signal.
The dynamic signal comprises a signal that requires an excitation to change. During the operation of the water pump, the signals received by the various sensors mounted thereon change constantly according to the changes in water pressure, temperature or other environmental parameters, thus forming dynamic signals. The invention can record and process dynamic signals besides voltage signals and current signals.
Specifically, the signal processing unit comprises a time domain analysis unit, a frequency spectrum analysis unit and a time frequency analysis unit;
wherein,
the time domain analysis unit is used for analyzing the average value, effective value, kurtosis value and 97% confidence coefficient peak-to-peak value of the dynamic signal, the current signal and the voltage signal;
the frequency spectrum analysis unit is used for analyzing and analyzing a first main frequency, a second main frequency, a third main frequency and the amplitude of the dynamic signal, the current signal and the voltage signal;
and the time-frequency analysis unit is used for analyzing the change conditions of the main frequencies of the dynamic digital signals, the current digital signals and the voltage digital signals along with time.
The time-frequency analysis unit is used for analyzing the change of the dynamic digital signal, the current digital signal and the voltage digital signal in time; the frequency spectrum analysis unit is used for analyzing the change of the dynamic digital signal, the current digital signal and the voltage digital signal in frequency; and the time-frequency analysis unit can simultaneously analyze the change conditions of the frequencies of the dynamic digital signal, the current digital signal and the voltage digital signal along with time by combining a time domain and a frequency domain.
As shown in fig. 2, specifically, the target water pump 101 is provided with a plurality of sensors capable of measuring various parameters, for example, an acceleration sensor, a pressure pulsation sensor, a sound level meter, and the like, to measure a pump body vibration signal, a pressure pulsation signal, a noise signal, and the like. Each sensor may generate a dynamic signal or a voltage signal or a current signal. The water pump transient signal analysis device 102 of the present invention receives the dynamic signal and/or the voltage signal and/or the current signal, conditions, filters and performs digital-to-analog conversion, and then performs time domain analysis, frequency spectrum analysis and time-frequency analysis by using Matlab software installed on the computer 103.
Specifically, the signal processing unit is connected with the display unit through a USB interface.
The water pump transient signal analysis device also comprises a power supply 15, and the power supply is used for supplying power to the device through a three-pin standard interface.
In summary, the embodiment of the invention adopts the unified signal acquisition unit, the analog-to-digital conversion unit and the signal processing unit, acquires the dynamic signal, the current signal and/or the voltage signal in a targeted manner, can synchronously record and process the transient signal of the water pump, and displays the processing result in real time, thereby greatly improving the monitoring and analyzing level of the transient signal of the water pump.
The invention also provides a method for analyzing the transient signal of the water pump, as shown in fig. 3, comprising the following steps:
s1, collecting at least one transient signal of the target water pump, wherein the transient signal is a dynamic signal and/or a current signal and/or a voltage signal;
s2, converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal and/or a current digital signal and/or a voltage digital signal respectively;
s3, performing time domain analysis, frequency domain analysis and time-frequency joint analysis on the dynamic digital signal and/or the current digital signal and/or the voltage digital signal;
and S4, displaying the result of analyzing the dynamic digital signal and/or the current digital signal and/or the voltage digital signal.
The step S1 includes:
s101, receiving a dynamic signal of the target water pump through a dynamic signal receiving channel;
s102, receiving a current signal of the target water pump through a current signal receiving channel;
and S103, receiving a voltage signal sent by the target water pump through a voltage signal receiving channel.
Specifically, the number of dynamic signal receiving channels is 8, the number of current signal receiving channels is 8, and the number of voltage signal receiving channels is 8; the interfaces of the dynamic signal receiving channel, the current signal receiving channel and the voltage signal receiving channel are four-pin aviation plug interfaces or coaxial cable interfaces. The target water pump is provided with a plurality of sensors capable of measuring various parameters, for example, an acceleration sensor, a pressure pulsation sensor, a sound level meter, and the like, and measures a pump body vibration signal, a pressure pulsation signal, a noise signal, and the like. In the experimental process of the invention, the actually used voltage signal receiving channels are 6, and the other 2 voltage signal receiving channels are used as alternatives, so that when the later stage target water pump is improved, the sensors are added, and the voltage signals sent by the added sensors can be received; the current signal receiving channel and the voltage signal receiving channel are similar to each other, and are not described in detail herein.
The step S2 includes:
s201, respectively converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal through an analog-to-digital conversion unit.
The step S201 includes:
s2011, amplifying the dynamic signal and/or the current signal and/or the voltage signal;
s2012, filtering the dynamic signal and/or the current signal and/or the voltage signal;
s2013, converting the filtered dynamic signal and/or current signal and/or voltage signal into a dynamic digital signal and/or current digital signal and/or voltage digital signal.
In particular, the dynamic signal comprises a signal that requires an excitation to change. During operation of the water pump, the signals received by the various sensors mounted thereon are constantly changing, so-called transient signals. The invention can record and process dynamic signals besides voltage signals and current signals.
The step S3 includes:
s301, analyzing the average value, effective value, kurtosis value and 97% confidence coefficient peak-to-peak value of the dynamic digital signal and/or the current digital signal and/or the voltage digital signal;
s302, respectively analyzing a first main frequency, a second main frequency, a third main frequency and amplitudes of the dynamic digital signal and/or the current digital signal and the voltage digital signal;
and S303, respectively analyzing the change condition of the main frequency of the dynamic digital signal and/or the current digital signal and/or the voltage digital signal along with time. The invention discloses a water pump transient signal analysis method, which is characterized in that at least one transient signal of a target water pump is uniformly collected, wherein the transient signal is a dynamic signal and/or a current signal and/or a voltage signal; converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal and/or a current digital signal and/or a voltage digital signal, respectively; performing time domain analysis, frequency domain analysis and time-frequency joint analysis on the dynamic digital signals and/or the current digital signals and/or the voltage digital signals; the method avoids the technical problems that in the prior art, the interfaces of the sensors with different signal types are inconsistent, the field wiring is disordered and is easy to go wrong, and the wiring is difficult to carry; meanwhile, the invention can record and process dynamic signals while recording voltage signals and current signals, thereby effectively improving the monitoring precision of the water pump and the water pump station.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (8)
1. A water pump transient signal analysis device, comprising:
the signal acquisition unit is used for acquiring at least one transient signal of the target water pump, wherein the transient signal is a dynamic signal, a current signal and a voltage signal;
the analog-to-digital conversion unit is used for respectively converting the dynamic signal, the current signal and the voltage signal into a dynamic digital signal, a current digital signal and a voltage digital signal;
the signal processing unit is used for carrying out time domain analysis, frequency domain analysis and time-frequency joint analysis on the dynamic digital signal, the current digital signal and the voltage digital signal;
the display unit is used for displaying the analysis results of the dynamic digital signal, the current digital signal and the voltage digital signal by the signal processing unit; wherein,
the signal acquisition unit includes: the device comprises a dynamic signal receiving channel, a current signal receiving channel and a voltage signal receiving channel;
the analog-to-digital conversion unit includes: a dynamic signal acquisition card, a current signal acquisition card and a voltage signal acquisition card;
the signal acquisition unit, the analog-to-digital conversion unit and the signal processing unit adopt unified interfaces.
2. The water pump transient signal analysis device of claim 1,
the dynamic signal acquisition card, the current signal acquisition card and the voltage signal acquisition card respectively comprise a signal conditioning unit, a signal filtering unit and an analog-to-digital conversion unit; wherein,
the signal conditioning unit is used for amplifying the dynamic signal and/or the current signal and/or the voltage signal;
the signal filtering unit is used for filtering the dynamic signal and/or the current signal and/or the voltage signal;
the analog-to-digital conversion unit is used for converting the dynamic signal and/or the current signal and/or the voltage signal filtered by the signal filtering unit into a dynamic digital signal and/or a current digital signal and/or a voltage digital signal.
3. The water pump transient signal analysis device of claim 1,
the dynamic signal comprises a signal that requires an excitation to change.
4. The water pump transient signal analysis device of any one of claims 1-3,
the signal processing unit comprises a time domain analysis unit, a frequency spectrum analysis unit and a time frequency analysis unit; wherein,
the time domain analysis unit is used for analyzing the average value, effective value, kurtosis value and 97% confidence coefficient peak-to-peak value of the dynamic signal, the current signal and the voltage signal;
the frequency spectrum analysis unit is used for analyzing and analyzing a first main frequency, a second main frequency, a third main frequency and the amplitude of the dynamic signal, the current signal and the voltage signal;
and the time-frequency analysis unit is used for analyzing the change conditions of the main frequencies of the dynamic digital signals, the current digital signals and the voltage digital signals along with time.
5. A method for analyzing transient signals of a water pump is characterized by comprising the following steps:
collecting at least one transient signal of a target water pump, wherein the transient signal is a dynamic signal and/or a current signal and/or a voltage signal;
converting the dynamic signal, the current signal and the voltage signal into a dynamic digital signal, a current digital signal and a voltage digital signal respectively;
performing time domain analysis, frequency domain analysis and time-frequency joint analysis on the dynamic digital signal, the current digital signal and the voltage digital signal;
displaying the result of the analysis of the dynamic digital signal and/or the current digital signal and/or the voltage digital signal; wherein,
receiving a dynamic signal of the target water pump through a dynamic signal receiving channel;
receiving a current signal of the target water pump through a current signal receiving channel;
receiving a voltage signal sent by the target water pump through a voltage signal receiving channel;
the converting the dynamic signal and the current and voltage signals into a dynamic digital signal and a current and voltage digital signal, respectively, comprises:
respectively converting the dynamic signal, the current signal and the voltage signal into dynamic digital signals through an analog-to-digital conversion unit;
the signal acquisition unit, the analog-to-digital conversion unit and the signal processing unit adopt unified interfaces.
6. The method for analyzing the transient signal of the water pump according to claim 5, wherein the converting the dynamic signal and/or the current signal and/or the voltage signal into a dynamic digital signal by an analog-to-digital conversion unit comprises:
amplifying the dynamic signal and/or current signal and/or voltage signal;
filtering the dynamic signal and/or the current signal and/or the voltage signal;
and converting the filtered dynamic signal and/or current signal and/or voltage signal into a dynamic digital signal and/or current digital signal and/or voltage digital signal.
7. The method of claim 5, wherein the transient signal is analyzed by a computer,
the dynamic signal comprises a signal that requires an excitation to change.
8. The method for analyzing the transient signal of the water pump according to any one of claims 5 to 7, wherein the performing time domain analysis, frequency domain analysis and time-frequency joint analysis on the dynamic digital signal and/or the current digital signal and/or the voltage digital signal comprises:
analyzing the average value, effective value, kurtosis value and 97% confidence peak-to-peak value of the dynamic digital signal and/or the current digital signal and/or the voltage digital signal;
respectively analyzing a first main frequency, a second main frequency, a third main frequency and amplitudes of the dynamic digital signal and/or the current digital signal and the voltage digital signal;
and respectively analyzing the change of the main frequency of the dynamic digital signal and/or the current digital signal and/or the voltage digital signal along with the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175603.XA CN104879294B (en) | 2015-04-14 | 2015-04-14 | A kind of water pump transient signal analytical equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175603.XA CN104879294B (en) | 2015-04-14 | 2015-04-14 | A kind of water pump transient signal analytical equipment and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104879294A CN104879294A (en) | 2015-09-02 |
| CN104879294B true CN104879294B (en) | 2017-12-26 |
Family
ID=53946927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510175603.XA Active CN104879294B (en) | 2015-04-14 | 2015-04-14 | A kind of water pump transient signal analytical equipment and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104879294B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241483A (en) * | 2015-11-04 | 2016-01-13 | 长春理工大学 | Transient field signal display method and device |
| CN108757502A (en) * | 2018-05-15 | 2018-11-06 | 江苏大学 | A kind of water pump assembly typical case's health status monitoring device and method based on Internet of Things |
| CN116717461B (en) * | 2023-08-01 | 2023-11-28 | 德耐尔能源装备有限公司 | Intelligent monitoring method and system for operating state of vacuum pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2441360B (en) * | 2006-08-31 | 2011-09-21 | Wolfson Microelectronics Plc | Amplifier apparatus and method |
| CN101694212B (en) * | 2009-10-21 | 2012-07-25 | 中国农业大学 | Pump and pump station integrated tester |
| CN102758613B (en) * | 2012-07-03 | 2014-11-12 | 常州大学 | Drilling pump fault detection and diagnosis method and system based on dynamic model |
| CN103763051B (en) * | 2014-02-12 | 2016-06-15 | 上海创远仪器技术股份有限公司 | Realize transient signal and catch the system with spectrum analysis |
| CN104373338A (en) * | 2014-11-19 | 2015-02-25 | 北京航空航天大学 | Hydraulic pump fault diagnosing method based on LMD-SVD and IG-SVM |
-
2015
- 2015-04-14 CN CN201510175603.XA patent/CN104879294B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104879294A (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206772429U (en) | Noise source tests and analyzes device | |
| CN105334460B (en) | State of runtime machine based on noise and vibration analysis monitors analysis system on-line | |
| CN104879294B (en) | A kind of water pump transient signal analytical equipment and method | |
| CN104227501A (en) | Testing and analyzing system for rotating errors of main shaft | |
| CN104062570A (en) | Power transformer partial discharge signal frequency-selecting method | |
| CN206208528U (en) | Aero-engine vibration-testing apparatus | |
| CN108107394B (en) | Method and system for detecting flatness and consistency of bandwidth of multi-channel digital oscilloscope | |
| CN107271022A (en) | A kind of transformer vibration noise Integrated Measurement System | |
| CN108592977B (en) | Synchronous acquisition and analysis method and system for dynamic calibration analog signals and digital signals | |
| CN208607331U (en) | A kind of generator stator core detection device and system | |
| CN104359689A (en) | Method and device for testing brake performance of motor train units | |
| CN104374428A (en) | Noise measurement device with wind speed measurement function and implement method of noise measurement device with wind speed measurement function | |
| CN106772193B (en) | Measuring method using current transformer frequency characteristic measuring device | |
| CN204228369U (en) | A kind of calibrating installation of vibration table | |
| CN202209988U (en) | Intelligent control type acoustic vibration measuring instrument | |
| CN108061845B (en) | GIS partial discharge data acquisition device | |
| CN206270482U (en) | A kind of current transformer frequency characteristic measurement device | |
| CN203011695U (en) | Intelligent stethoscope for automobile engine faults | |
| CN105572655B (en) | A kind of faint underwater sound signal simulation and test device | |
| CN203011933U (en) | Rotating speed detection system for engine | |
| CN105547581A (en) | Method for making cloud chart of outlet pressure of turbo machine rotor | |
| CN104572388B (en) | Data filtering system, data filtering device and method | |
| CN110944280B (en) | Noise test system and test method for digital microphone | |
| CN107340442A (en) | A kind of power inverter common mode disturbances inhibition site assessment system and method | |
| CN104792444A (en) | Metal component stress measurement method and metal component stress measurement system based on eddy current impedance |
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 |