CN110426221A - A kind of mechanical fault detection system and its detection method - Google Patents
A kind of mechanical fault detection system and its detection method Download PDFInfo
- Publication number
- CN110426221A CN110426221A CN201910435355.6A CN201910435355A CN110426221A CN 110426221 A CN110426221 A CN 110426221A CN 201910435355 A CN201910435355 A CN 201910435355A CN 110426221 A CN110426221 A CN 110426221A
- Authority
- CN
- China
- Prior art keywords
- signal
- fault detection
- controlled switch
- program controlled
- filter
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/004—Testing the effects of speed or acceleration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of mechanical fault detection system and its detection methods, system includes three and is mechanically coupled the vibrating sensor connect with tested, filter corresponding with each road sensor and program controlled switch, and it is monitored signal adder, filter amplification circuit, analog-digital converter, the fault detection processor of signal subsequent processing, when detection, control program controlled switch first is fully open, monitor system monitoring at this time is the cumulative of tri- road vibration signal of X, Y, Z, accumulated value is compared by fault detection processor with fault threshold, judges whether to break down；It after detecting failure, is gated respectively by program controlled switch, the emphasis monitoring of single channel is carried out, in fault location to some direction.Program controlled switch is arranged in the present invention, can also monitor certain signal all the way with timesharing emphasis three Signal averagings to monitoring together, improve the reusability and consistency of processing circuit, reduce system false alarm rate.
Description
Technical field
The present invention relates to mechanical fault detection technologies, and in particular to a kind of mechanical fault detection system and its detection method.
Background technique
Be installed on the vibrating sensor of mechanical surface, can be vibrated with the vibration or rotation of monitored component, obtain with
Monitored position frequency of components is consistent, therefore amplitude and the positively related electric signal of vibration acceleration value pass through monitoring vibration sensor
Electric signal can detecte mechanical breakdown.It is distributed since mechanical oscillation signal all exists on space three-dimensional, and traditional acceleration
Sensor is that tool is directive, so generally requiring all to arrange on XYZ three-dimensional for conduct monitoring at all levels fault-signal
Vibrating sensor.Road sensor every in this way needs a conditioning circuit and analog-to-digital conversion, and back-end circuit system is huge and parameter is set
Complexity is set, causes the failure rate of monitoring system itself and false alarm rate higher.
Summary of the invention
The purpose of the present invention is to provide a kind of mechanical fault detection system and its detection methods.
The technical solution for realizing the aim of the invention is as follows: a kind of mechanical fault detection system, including three and tested machine
The vibrating sensor that tool is connected, filter corresponding with each road sensor and program controlled switch, and to be monitored signal subsequent
Signal adder, filter amplification circuit, analog-digital converter, the fault detection processor of processing, in which: the vibrating sensor is used
Electric signal is converted in the vibration signal by machinery in X, Y, Z-direction；The filter is connected with vibrating sensor, for being isolated
The direct current component of vibrating sensor detection signal；The program controlled switch is connected with filter, for gated transmission to next circuit
Partial signal；The signal adder is connected with program controlled switch, for carrying out equal proportion superposition to gating signal；The filtering
Amplifying circuit is connected with signal adder, for the signal of superposition to be filtered and amplified；The analog-digital converter and filtering
Amplifying circuit is connected, for the analog signal after filter and amplification to be converted to digital signal；The fault detection processor and mould
Number converter is connected, and for reading digital signal, completes breakdown judge and program controlled switch control.
A kind of mechanical fault detection method, first control program controlled switch it is fully open, at this time monitor system monitoring be X,
Y, tri- road vibration signal of Z is cumulative, and accumulated value is compared by fault detection processor with fault threshold, judges whether that event occurs
Barrier；It after detecting failure, is gated respectively by program controlled switch, the emphasis monitoring of single channel is carried out, fault location to some direction
On.
Compared with prior art, the present invention its remarkable advantage are as follows: program controlled switch is arranged in the present invention, three signals can be folded
Monitoring added together can also monitor certain signal all the way with timesharing emphasis, improve the reusability and consistency of processing circuit, reduce
System false alarm rate.
Detailed description of the invention
Fig. 1 is the schematic diagram of mechanical fault detection system of the present invention.
Fig. 2 is the schematic diagram of adder.
Fig. 3 is the flow chart of mechanical fault detection method.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention program is further illustrated.
As shown in Figure 1, mechanical fault detection system, which includes three, is mechanically coupled the vibrating sensor connect with tested, with each road
The corresponding filter of sensor and program controlled switch, and it is monitored the signal adder of signal subsequent processing, filter and amplification electricity
Road, analog-digital converter, fault detection processor, in which: the vibrating sensor is used to believe machinery in the vibration of X, Y, Z-direction
Number be converted to electric signal；The filter is connected with vibrating sensor, for the direct current portion of vibrating sensor detection signal to be isolated
Point；The program controlled switch is connected with filter, for gated transmission to the signal of next circuit part；The signal adder with
Program controlled switch is connected, for carrying out equal proportion superposition to gating signal；The filter amplification circuit is connected with signal adder, uses
In the signal of superposition is filtered and is amplified；The analog-digital converter is connected with filter amplification circuit, is used for filter and amplification
Analog signal afterwards is converted to digital signal；The fault detection processor is connected with analog-digital converter, for reading digital letter
Number, complete breakdown judge and program controlled switch control.
As a kind of specific implementation, the filter can use capacitance.The program controlled switch can be three lists
Only program controlled switch is also possible to the separately controllable integrated program controlled switch in a road Ge Mei.The adder can be put by one
Big device is built, as shown in Figure 2.The filter amplification circuit is made of filter circuit and amplification chip.The analog-digital converter is
One meets the single channel analog-digital converter of precision.The fault detection processor can be single-chip microcontroller, DSP, FPGA, ARM etc..
Based on the mechanical fault detection method of above-mentioned mechanical fault detection system, control program controlled switch first is fully open,
Monitor system monitoring at this time is the cumulative of tri- road vibration signal of X, Y, Z, fault detection processor by accumulated value and fault threshold,
The threshold value of i.e. accumulative failure or the threshold value of mutation failure are compared, and judge whether to break down；When the failure in some direction
When occurring suddenly, the Signal averaging value detected can be also mutated, and when Sudden Changing Rate is more than mutation failure threshold value, be selected respectively three tunnels
It is logical, the emphasis monitoring of single channel is carried out, in fault location to some direction；When the accumulated error of three road Signal averaging values is more than tired
When counting fault threshold, three tunnels can be gated respectively, in fault location to some direction.Software implementation method is as shown in Figure 3.
It, can also be according to application requirement in practical application The present invention gives the case where tri- directions XYZ are monitored
The monitoring device in more than three direction is configured, monitoring principle is described above.
Claims (8)
1. a kind of mechanical fault detection system, which is characterized in that it is mechanically coupled the vibrating sensor connect with tested including three, with
The corresponding filter of each road sensor and program controlled switch, and be monitored the signal adder of signal subsequent processing, filtering is put
Big circuit, analog-digital converter, fault detection processor, in which: the vibrating sensor is used for machinery in X, Y, the vibration of Z-direction
Dynamic signal is converted to electric signal；The filter is connected with vibrating sensor, for the straight of vibrating sensor detection signal to be isolated
Stream part；The program controlled switch is connected with filter, for gated transmission to the signal of next circuit part；The signal addition
Device is connected with program controlled switch, for carrying out equal proportion superposition to gating signal；The filter amplification circuit and signal adder phase
Even, for the signal of superposition to be filtered and amplified；The analog-digital converter is connected with filter amplification circuit, for that will filter
Amplified analog signal is converted to digital signal；The fault detection processor is connected with analog-digital converter, for reading number
Word signal completes breakdown judge and program controlled switch control.
2. mechanical fault detection system according to claim 1, which is characterized in that the filter uses capacitance.
3. mechanical fault detection system according to claim 1, which is characterized in that the program controlled switch is three individual
The separately controllable integrated program controlled switch of program controlled switch or a road Ge Mei.
4. mechanical fault detection system according to claim 1, which is characterized in that the filter amplification circuit is by filtered electrical
Road and amplification chip are constituted.
5. mechanical fault detection system according to claim 1, which is characterized in that the analog-digital converter is single channel modulus
Converter.
6. mechanical fault detection system according to claim 1, which is characterized in that the fault detection processor is monolithic
Machine, DSP, FPGA or ARM.
7. based on the mechanical fault detection method of mechanical fault detection system as claimed in any one of claims 1 to 6, feature
It is, control program controlled switch first is fully open, and monitor system monitoring at this time is the cumulative of tri- road vibration signal of X, Y, Z, therefore
Accumulated value is compared by barrier measurement processor with fault threshold, judges whether to break down；After detecting failure, by program-controlled
Switch gates respectively, the emphasis monitoring of single channel is carried out, in fault location to some direction.
8. mechanical fault detection method according to claim 7, which is characterized in that the fault threshold packet for fault diagnosis
Include the threshold value of accumulative failure and the threshold value of mutation failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435355.6A CN110426221A (en) | 2019-05-23 | 2019-05-23 | A kind of mechanical fault detection system and its detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435355.6A CN110426221A (en) | 2019-05-23 | 2019-05-23 | A kind of mechanical fault detection system and its detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110426221A true CN110426221A (en) | 2019-11-08 |
Family
ID=68407580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910435355.6A Pending CN110426221A (en) | 2019-05-23 | 2019-05-23 | A kind of mechanical fault detection system and its detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110426221A (en) |
Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03185318A (en) * | 1989-12-15 | 1991-08-13 | Toshiba Corp | Device for detecting fault of rotary apparatus |
| CN101498587A (en) * | 2008-02-01 | 2009-08-05 | 西铁城精电科技株式会社 | Body movement detecting apparatus |
| US20100116041A1 (en) * | 2007-05-22 | 2010-05-13 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Device for error monitoring of chassis components of rail vehicles |
| CN102914432A (en) * | 2012-10-24 | 2013-02-06 | 宣化钢铁集团有限责任公司 | Vibration and acoustic transmission signal regulation instrument for detecting mechanical faults |
| CN202815012U (en) * | 2012-09-20 | 2013-03-20 | 西安交通大学 | Digital three-axis micro-acceleration sensor |
| CN203012103U (en) * | 2012-11-26 | 2013-06-19 | 中国人民解放军63696部队 | On-line detection system of large-scale antenna servo motor |
| CN103901301A (en) * | 2014-03-21 | 2014-07-02 | 北京天诚同创电气有限公司 | Fault diagnosis method for frequency converter |
| CN104019942A (en) * | 2014-06-24 | 2014-09-03 | 上海大学 | Dynamic balance correcting system and method of self-adapted variable load vibrating platform |
| CN105203897A (en) * | 2014-06-23 | 2015-12-30 | 展讯通信（上海）有限公司 | Method for detecting short-circuited device on circuit board |
| CN106353637A (en) * | 2016-08-19 | 2017-01-25 | 国家电网公司 | Method for fault analysis and location of thyristor controlled reactor of static var compensator |
| CN206114285U (en) * | 2016-11-04 | 2017-04-19 | 浙江水利水电学院 | A wireless vibration signal monitoring device for detecting large -scale rotating machinery trouble |
| CN107976252A (en) * | 2017-12-29 | 2018-05-01 | 江南嘉捷电梯股份有限公司 | Escalator driving wheel vibration detection device |
| CN207366148U (en) * | 2017-10-31 | 2018-05-15 | 徐州中铁电气有限公司 | Insulating sleeve air tightness detection apparatus |
| CN108083074A (en) * | 2017-12-29 | 2018-05-29 | 苏州江南嘉捷电梯有限公司 | Escalator expansion tightening wheel health degree detection device |
| CN108120896A (en) * | 2016-11-30 | 2018-06-05 | 国家电网公司 | A kind of single-phase earthing Injection Signal source control system |
| CN207630978U (en) * | 2017-11-21 | 2018-07-20 | 简式国际汽车设计（北京）有限公司 | Battery pack insulation fault location device |
| CN207816451U (en) * | 2018-02-01 | 2018-09-04 | 北京迪利科技有限公司 | Motor oscillating monitoring device and intelligent electric machine |
| CN108896850A (en) * | 2018-07-20 | 2018-11-27 | 浙江浙能常山天然气发电有限公司 | A kind of detection method of the sulfur hexafluoride sealed combination electrical equipment of three shaft vibrations technology |
| CN109030997A (en) * | 2018-07-19 | 2018-12-18 | 浙江浙能常山天然气发电有限公司 | A kind of switchgear On-line Fault intelligent monitoring method based on three shaft vibration technologies |
| CN109147978A (en) * | 2018-06-28 | 2019-01-04 | 广东核电合营有限公司 | A kind of circuit loose part monitoring device and its method for nuclear power unit |
| CN109443648A (en) * | 2018-12-27 | 2019-03-08 | 西安热工研究院有限公司 | A kind of hydrophobic method and apparatus hunted leak online of heat exchangers for district heating |
| CN109444713A (en) * | 2018-11-13 | 2019-03-08 | 无锡中微腾芯电子有限公司 | A kind of wafer test contact fault diagnostic method |
| CN208688824U (en) * | 2018-08-21 | 2019-04-02 | 广东石油化工学院 | One kind is towards the information collection of petrochemical industry rotating equipment failures and diagnostic device |
-
2019
- 2019-05-23 CN CN201910435355.6A patent/CN110426221A/en active Pending
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03185318A (en) * | 1989-12-15 | 1991-08-13 | Toshiba Corp | Device for detecting fault of rotary apparatus |
| US20100116041A1 (en) * | 2007-05-22 | 2010-05-13 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Device for error monitoring of chassis components of rail vehicles |
| CN101498587A (en) * | 2008-02-01 | 2009-08-05 | 西铁城精电科技株式会社 | Body movement detecting apparatus |
| CN202815012U (en) * | 2012-09-20 | 2013-03-20 | 西安交通大学 | Digital three-axis micro-acceleration sensor |
| CN102914432A (en) * | 2012-10-24 | 2013-02-06 | 宣化钢铁集团有限责任公司 | Vibration and acoustic transmission signal regulation instrument for detecting mechanical faults |
| CN203012103U (en) * | 2012-11-26 | 2013-06-19 | 中国人民解放军63696部队 | On-line detection system of large-scale antenna servo motor |
| CN103901301A (en) * | 2014-03-21 | 2014-07-02 | 北京天诚同创电气有限公司 | Fault diagnosis method for frequency converter |
| CN105203897A (en) * | 2014-06-23 | 2015-12-30 | 展讯通信（上海）有限公司 | Method for detecting short-circuited device on circuit board |
| CN104019942A (en) * | 2014-06-24 | 2014-09-03 | 上海大学 | Dynamic balance correcting system and method of self-adapted variable load vibrating platform |
| CN106353637A (en) * | 2016-08-19 | 2017-01-25 | 国家电网公司 | Method for fault analysis and location of thyristor controlled reactor of static var compensator |
| CN206114285U (en) * | 2016-11-04 | 2017-04-19 | 浙江水利水电学院 | A wireless vibration signal monitoring device for detecting large -scale rotating machinery trouble |
| CN108120896A (en) * | 2016-11-30 | 2018-06-05 | 国家电网公司 | A kind of single-phase earthing Injection Signal source control system |
| CN207366148U (en) * | 2017-10-31 | 2018-05-15 | 徐州中铁电气有限公司 | Insulating sleeve air tightness detection apparatus |
| CN207630978U (en) * | 2017-11-21 | 2018-07-20 | 简式国际汽车设计（北京）有限公司 | Battery pack insulation fault location device |
| CN107976252A (en) * | 2017-12-29 | 2018-05-01 | 江南嘉捷电梯股份有限公司 | Escalator driving wheel vibration detection device |
| CN108083074A (en) * | 2017-12-29 | 2018-05-29 | 苏州江南嘉捷电梯有限公司 | Escalator expansion tightening wheel health degree detection device |
| CN207816451U (en) * | 2018-02-01 | 2018-09-04 | 北京迪利科技有限公司 | Motor oscillating monitoring device and intelligent electric machine |
| CN109147978A (en) * | 2018-06-28 | 2019-01-04 | 广东核电合营有限公司 | A kind of circuit loose part monitoring device and its method for nuclear power unit |
| CN109030997A (en) * | 2018-07-19 | 2018-12-18 | 浙江浙能常山天然气发电有限公司 | A kind of switchgear On-line Fault intelligent monitoring method based on three shaft vibration technologies |
| CN108896850A (en) * | 2018-07-20 | 2018-11-27 | 浙江浙能常山天然气发电有限公司 | A kind of detection method of the sulfur hexafluoride sealed combination electrical equipment of three shaft vibrations technology |
| CN208688824U (en) * | 2018-08-21 | 2019-04-02 | 广东石油化工学院 | One kind is towards the information collection of petrochemical industry rotating equipment failures and diagnostic device |
| CN109444713A (en) * | 2018-11-13 | 2019-03-08 | 无锡中微腾芯电子有限公司 | A kind of wafer test contact fault diagnostic method |
| CN109443648A (en) * | 2018-12-27 | 2019-03-08 | 西安热工研究院有限公司 | A kind of hydrophobic method and apparatus hunted leak online of heat exchangers for district heating |
Non-Patent Citations (1)
| Title |
|---|
| 靳文娟 等: "基于振动信号分析的高压断路器机械故障诊断", 《广东电力》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105320839A (en) | Parallel digital signal processing of machine vibration data | |
| CN111398628B (en) | Motor rotating speed direction measuring device and measuring calculation method thereof | |
| CN102645270A (en) | Intelligent dual-mode vibration sensor for rotary machinery | |
| US8688862B1 (en) | Systems and methods for monitoring input signal parameters | |
| CN104678912A (en) | Measurement system consisting of a plurality of sensors | |
| CN103000409A (en) | Low frequency breaker with phase-selection brake-separating function | |
| CN101201370A (en) | Fault diagnosis system adopting circuit information amalgamation and implementing method thereof | |
| CN204255494U (en) | Bridge vibration monitoring device | |
| CN101324633A (en) | Rotary speed sensor with bus interface for automobile | |
| EP3486372B1 (en) | Fall-down detection sensor for rammer | |
| CN108152558A (en) | Current sampling system and electric automobile | |
| CN110426221A (en) | A kind of mechanical fault detection system and its detection method | |
| CN110118582A (en) | A kind of rotating machinery fault diagnosis method and system | |
| CN102495225A (en) | Device and method for measuring rotating speed of steam turbine | |
| CN209946353U (en) | Device for detecting cable state of transponder | |
| CN209346890U (en) | Cleaning equipment | |
| CN106019361B (en) | The two-parameter geophone of moving-coil type and demodulation system | |
| CN210221512U (en) | Bogie unstability monitored control system | |
| CN106199373A (en) | Electronic equipment intelligent failure diagnosis method and device | |
| CN114993461B (en) | System and method for detecting vibration of motor of tower crane mechanism | |
| EP3144640B1 (en) | Sensor arrangement and method for operation of a sensor | |
| CN115855754A (en) | System and method for online monitoring of latent metal particles in GIS (gas insulated switchgear) related to action state of circuit breaker | |
| CN202693310U (en) | Fault diagnosis system for multi-channel mechanical equipment | |
| CN102818579A (en) | Method for determining accuracy of angle measurement signal emitted by rotary transformer | |
| CN206374361U (en) | Printing machine accident warning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191108 |
|
| RJ01 | Rejection of invention patent application after publication |