CN207408100U - Bear vibration monitoring device based on wireless sensor network - Google Patents
Bear vibration monitoring device based on wireless sensor network Download PDFInfo
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Abstract
A kind of bear vibration monitoring device based on wireless sensor network, including wireless data collection device, wireless router, server and user's PC machine.The utility model has the advantages that：Relatively wired on-line monitoring, wireless sensor network eliminate the correlative charges such as cable, are that enterprise is cost-effective；Wireless sensing module only needs to change the module of identical function, without other care and maintenances if there is failure；Multiple sensors can be coupled, are assembled according to the difference of data acquisition demand, are offered convenience to the installation of monitoring device；The network characteristic and hardware feature of wireless sensing monitoring modular determine that monitoring modular has stronger mobility, and layout personnel can be laid out according to different monitoring indexes, different orientation；The region that wireless sensor network monitoring system can also be applied to the region of wiring and power supply supply difficulty and personnel cannot reach.
Description
Technical field
The utility model is related to bearing vibration monitoring field more particularly to a kind of bearings based on wireless sensor network
Vibration monitoring equipment.
Background technology
In mechanical fault diagnosis, vibration detection means are the most frequently used also most effective, and about 70% source of trouble can
To be diagnosed by vibration analysis.Modern industry scene, many device structures are huge, and it is wide to produce line length, operating area, institute
The working environment at place is severe, it is difficult at the scene implement wiring and it is difficult in maintenance, signal interference is serious, set expandability is poor.Tradition
State monitoring of rolling bearing system based on wired mode is widely used, but is existed and connected up the problems such as complicated, difficult in maintenance.It is based on
Wireless sensor network (Wireless Sensor Network, WSN) though monitoring mode in state monitoring of rolling bearing
Application is obtained, but primarily directed to the monitoring of the slow variable signal such as temperature, one is still had for the vibration monitoring of rolling bearing
Fixed limitation.
For vibration data traffic it is big the characteristics of, it is proposed that based on resonance and demodulation vibration performance anticipation wireless data pass
Defeated strategy first calculates fault signature of the vibration signal after resonance and demodulation by monitoring node, is prejudged further according to given threshold,
Characteristic value is only sent if fault-free, if faulty send original vibration signal for subsequent rigorous analysis.For single-hop
The network entirety latency issue that the limitation and Single Point of Faliure of data transmission range are brought, it is proposed that point of tree-like double aggregation nodes
Cluster wireless sensor network overall topological structure.For the confidence level of diagnostic result, data that single sensor measures will necessarily
The omission of effective fault characteristic information is caused, increases the contingency of fault diagnosis result.It gathers simultaneously and analyzes multiple passages
Signal data can obtain more useful informations for including fault signature, so as to improve the accuracy of fault diagnosis result and confidence
Degree.
Utility model content
The utility model will solve the above-mentioned problems of the prior art, provide a kind of bearing based on wireless sensor network
Vibration monitoring equipment can realize the vibration signal of wireless monitor rolling bearing.
The utility model solves the technical solution of its technical problem use：This bear vibration based on wireless sensor network
Monitoring device, including wireless data collection device, wireless router, server and user's PC machine；
Wireless data collection device includes vibration acceleration sensor and temperature sensor, and wireless data collection device will be adopted
It after the data collected are handled, through wireless router, is transmitted in the background data base of server, user utilizes enterprise inside factory
Industry net analyzes Real-time Monitoring Data or carries out the inquiry of historical data operation；
One wireless router and several wireless data collection devices constitute cluster, several clusters constitute entire monitoring
Sensing data is wirelessly transferred to wireless router, each wireless router by object, wireless data collection device
It is responsible for the data forwarding of 1-16 wireless data collection device, finally forwards the data to server and stored and analyzed, and
Enterprise customer is supplied to service；
Wireless data collection device, wireless router, server constitute wireless collection network system, wireless collection network
System includes temperature measurement node, leader cluster node and aggregation node, and cluster is made of leader cluster node and temperature measurement node, and temperature measurement node is responsible for adopting
Collect temperature information, and temperature information is transferred to leader cluster node, leader cluster node receives the data that temperature measurement node is sent in cluster, and will
Data sending to aggregation node, be responsible for the data sending of leader cluster node to server by aggregation node；
Server uses high-performance server, and high-performance server is built-in with relative application software, before application software includes
End data capture program, database service, distributed application server program, Web service program；
User's PC machine includes client, and client carries out monitoring in real time, real-time curve, statistical analysis, alarm list, is
It is under the overall leadership reason, program update, system help operation.
Wireless collection network system further include there are two relay node and two alarm leader cluster nodes.
Network architecture in wireless collection network system using stelliform connection topology configuration, stelliform connection topology configuration by normal node with
Malfunctioning node monitoring data subchannel transmits.
The utility model has the advantages that：Bear vibration based on the wireless sensor network monitoring of the utility model is set
Standby, relatively wired on-line monitoring, wireless sensor network eliminates the correlative charges such as cable, and wireless sensing node expense is opposite
It is cheap, it is that enterprise is cost-effective；Wireless sensing module only needs to change the module of identical function if there is failure, without
Other care and maintenances；Wireless sensor network module has multiple interfaces, multiple sensors can be coupled, according to data acquisition need
The difference asked is assembled, and is offered convenience to the installation of monitoring device；The network characteristic and hardware of wireless sensing monitoring modular are special
Property determine monitoring modular have stronger mobility, layout personnel can be according to different monitoring indexes, different orientation
It is laid out, can be placed on around equipment can also be embedded into inside equipment；Wireless sensor network monitoring system can be with
The region that the region and personnel difficult applied to wiring and power supply supply cannot reach.
Description of the drawings
Fig. 1 is the system framework figure of the utility model embodiment；
Fig. 2 communication modes figures between the utility model embodiment node；
Fig. 3 is the vibrating data collection node main control chip circuit diagram of the utility model embodiment；
Fig. 4 is the vibrating data collection node analog to digital conversion circuit schematic diagram of the utility model embodiment；
Fig. 5 is the testing stand overall pattern of the utility model embodiment
Reference sign：Bolt 1, washer 2, transparent cover 3, bearing 5, main shaft 6, flange 7, pressure copper sheathing 8, axial baffle ring 9,
Spindle pulley 11, key 12, motor pulley 15, Y132S-4 motors 16, electric baseboard 17.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
Referring to the drawings：This bear vibration monitoring device based on wireless sensor network in the present embodiment, including wireless
Data acquisition equipment, wireless router, server and user's PC machine；
Wireless data collection device includes vibration acceleration sensor and temperature sensor, and wireless data collection device will be adopted
It after the data collected are handled, through wireless router, is transmitted in the background data base of server, user utilizes enterprise inside factory
Industry net analyzes Real-time Monitoring Data or carries out the inquiry of historical data operation；
One wireless router and several wireless data collection devices constitute cluster, several clusters constitute entire monitoring
Sensing data is wirelessly transferred to wireless router, each wireless router by object, wireless data collection device
It is responsible for the data forwarding of 1-16 wireless data collection device, finally forwards the data to server and stored and analyzed, and
Enterprise customer is supplied to service；
Wireless data collection device, wireless router, server constitute wireless collection network system, wireless collection network
System includes temperature measurement node, leader cluster node and aggregation node, and cluster is made of leader cluster node and temperature measurement node, and temperature measurement node is responsible for adopting
Collect temperature information, and temperature information is transferred to leader cluster node, leader cluster node receives the data that temperature measurement node is sent in cluster, and will
Data sending to aggregation node, be responsible for the data sending of leader cluster node to server by aggregation node；
Server uses high-performance server, and high-performance server is built-in with relative application software, before application software includes
End data capture program, database service, distributed application server program, Web service program；
User's PC machine includes client, and client carries out monitoring in real time, real-time curve, statistical analysis, alarm list, is
It is under the overall leadership reason, program update, system help operation.
Wireless collection network system further include there are two relay node and two alarm leader cluster nodes.
Network architecture in wireless collection network system using stelliform connection topology configuration, stelliform connection topology configuration by normal node with
Malfunctioning node monitoring data subchannel transmits.
For wireless data collection device using vibration acceleration sensor, temperature sensor etc., wireless data collection device will
It after the data collected are handled, through wireless router, is transmitted in the background data base of server, user can utilize factory
Internal enterprising network analyzes Real-time Monitoring Data or carries out the operations such as the inquiry of historical data, sees Fig. 1.
Whole monitoring objects are divided into several regions by detection part, are referred to as cluster, each cluster is by a wireless router
It is formed with several wireless data collection devices, sensing data is wirelessly transferred to wirelessly by wireless data collection device
Router, each wireless router can be responsible for the data forwarding of 1-16 wireless data collection device, finally forward the data to
Server is stored and analyzed, and enterprise customer is supplied to service.
Cluster is made of leader cluster node and temperature measurement node, and entire wireless collection network system includes three kind equipments：Temperature measurement node,
Leader cluster node, aggregation node, temperature measurement node is responsible for collecting temperature information, and temperature information is transferred to leader cluster node, cluster head section
Point receives the data that temperature measurement node is sent in cluster, and transmits data to aggregation node, and aggregation node is responsible for leader cluster node
For data sending to apps server, the communication between node is as shown in Figure 2.
Server is remote monitoring server, and remote monitoring server is by a high-performance server and relative application software
It forms, application software includes：Front end data acquisition program, database service, distributed application server program, Web service journey
Sequence, these application software are known technology and are built in server.
The major function of client includes：Real-time monitoring, real-time curve, statistical analysis, alarm list, system administration, journey
The function modules such as sequence update, system help.
Data acquisition node uses modularized design, by the acquisition of data, conditioning, analog-to-digital conversion, data processing and wireless
Radio frequency is independently opened, and is worked convenient for the later maintenance of node.It is convenient to simultaneously when needing and function being increased and is changed.
Node is by data acquisition module, data processing module, data transmission blocks and energy supply four module composition.
Two alarm leader cluster nodes form double aggregation nodes, relay node and double aggregation nodes, avoid single-hop transmission model
The limitation enclosed, being with the addition of the mode of relay node increases the transmission range of data, meanwhile, in order to improve the timeliness of data transmission
Property and malfunctioning node data upload comprehensive, the system is using the transmission of normal node and malfunctioning node monitoring data subchannel
Operating mode.
The utility model embodiment has the data transmission scheme of high reliability, since vibration signal is high-frequency signal, and
Equipment is all in most cases normal work, if these data measured are all transferred to server, can so be caused
Substantial amounts of data redundancy, memory space can be wasted largely, it is also possible to cause system unstable, due to supervising in most cases
Measurement equipment is in the state of normal work, at this time without carrying out accurate accident analysis, only need to obtain the partial feature value of equipment i.e.
It can.
The utility model embodiment uses multiple sensor faults diagnosis technology, i.e., the data that single sensor measures are inevitable
The omission of effective fault characteristic information can be caused, increases the contingency of fault diagnosis result.It gathers simultaneously and analyzes multiple passages
Signal data can obtain more useful informations for include fault signature, so as to improve the accuracy of fault diagnosis result and put
Reliability.
In wireless sensor network system, there are two types of the basic network architectures：A kind of is the Star based on static routing
Type structure single-hop wireless communication mode, another kind are the Mesh type structure multi-hop wireless transmission modes based on dynamic routing.
The star-like wireless sensor network structure of single-hop wireless transmission, network structure is simple, easy to implement, and entire net
The energy expenditure of each monitoring node is averaged in network, while the network delay of data packet is smaller, this topological structure from design on compared with
For complexity, the new algorithm on Mesh topological structures is still in conceptual phase at present, and the purpose of this method is to realize network
Self-organizing is to reach the addition of the monitoring node under no admin state and removal.
Compare two kinds of topological structures, Mesh type topological structures complexity is high, have network capacity is big, transmission range is wide,
The advantages that data transmission credibility is high, but network-induced delay is long, monitoring node energy expenditure is uneven since the structure has
The shortcomings of even, is easy to cause monitoring data and uploads not in time and network monitoring data caused by the too fast consumption of part of nodes energy
Imperfect or even local paralysis.Star type topological structures are although relatively simple, transmission range is than relatively limited, but this transmission side
Formula tissue is simple, is easy in industry spot stable operation.For the wireless sensor network for the rolling bearing for needing to design in paper
Network monitors system, Star types wireless sensor network can embody the consumption of each node energy uniformly, data upload in time
Advantage, this is that system accurately completes the precondition for monitoring and diagnosing, meanwhile, it can be opened up by way of increasing relay node
Open up the coverage of network.Therefore, the wireless sensor monitoring network of design uses Star Basic Topologicals.
In view of the finiteness of single-hop networks transmission range, stelliform connection topology configuration is improved here.In industry spot,
The installation site of monitoring node is determined by the specific situation of equipment and production line, although opposite in industry spot monitoring node quantity
It is limited, but since device distribution has high concentration and high degree of dispersion double grading, the distribution of monitoring node also has
Have and equally have the quality that, in order to avoid single-hop transmission scope limitation the system by the way of relay node is added
Increase the transmission range of data.Meanwhile upload comprehensive, sheet to improve the timeliness of data transmission and malfunctioning node data
System is using normal node and the operating mode of malfunctioning node monitoring data subchannel transmission, when the bearing that node is monitored is in
During normal operating conditions, monitoring node uploads time domain and the frequency domain character parameter that it is calculated by master network；When monitoring saves
When point is in abnormal operation, monitoring node uploads its bearing vibration data collected by system alarm network
Full content.It is improved by more than two parts, ultimately forms the tree network topology structure of double aggregation nodes.
WSN Protocol Designs use the Cluster Networks topological structure of tree-like double aggregation nodes, i.e., there are two converge in whole network
Poly- node is main aggregation node and alarm aggregation node respectively.Network has two level and three-level both of which, is respectively intelligent testing
Shake node, aggregation node two-stage pattern or intelligent vibration measuring node, relay node, aggregation node three-level schema.Vibration measuring node into
Acquisition, processing and the analysis of row vibration data, it would be desirable to which the data of upload are uploaded to corresponding aggregation node；Aggregation node is then united
The sequential of each node, is on the one hand sent to vibration measuring node, separately by the control instruction for coming from server end in one control network
On the one hand the data that intellectual monitoring node uploads are collected, and are sent to server end, server carries out the signal of collection in worksite
Processing, storage, and accident analysis and diagnosis are carried out, meanwhile, server can also send instruction to obtain expection to vibration measuring node
Effect, such as change feature Value Types, alarming value and the real-time acquisition for carrying out data.
Since vibration signal is high-frequency signal, and equipment is all in most cases normal work, if this measured
A little data are all transferred to server, can so cause substantial amounts of data redundancy, memory space can be wasted largely, it is also possible to be made
It is unstable into system, since monitoring device is in the state worked normally in most cases, at this time without carrying out accurate event
Barrier analysis need to only obtain the partial feature value of equipment, therefore individual node volume of transmitted data is smaller；It is monitored in practical application
The situation that equipment is in malfunction is less, but needs to obtain the more complete information of equipment in this case, as failure afterwards
Rigorous analysis, it is therefore desirable to which the data volume of transmission is big.Data analysis and feature extraction are carried out by intellectual monitoring node, and in terms of
Calculation result is diagnosis basis, so as to reach the target for reducing data sending amount.
The data that single sensor measures will necessarily cause the omission of effective fault characteristic information, increase fault diagnosis knot
The contingency of fruit.The signal data for gathering simultaneously and analyzing multiple passages can obtain more useful letters for including fault signature
Breath, so as to improve the accuracy of fault diagnosis result and confidence level.Technology for mechanical fault diagnosis is that research mechanical equipment is run
Status information, the state and failure of monitoring, diagnosis and indication mechanical equipment, a science skill of guarantee mechanical equipment safe operation
Art.Its necessary condition is exactly that fault-signal feature is extracted from operation state signal, for the early stage of mechanical system
Failure, in the budding stage, performance is little with the difference under normal condition, often appears as unstable small-signal.This
Outside, the Weak fault signal of early stage is submerged in strong background noise, shows complicated non-stationary nonlinear characteristic so that early stage
The small-signal of failure is more difficult to extract.
Vibration measuring node, in master network frequency range and in listening state, is receiving main aggregation node after power-up initializing
Invitation add in after network instruction, vibration measuring node sends the addition network information to aggregation node, and main aggregation node judges new section
Whether vibration measuring node can add in network to point, send response instruction afterwards, add in successful flag bit including node, add in network
Success.
The characteristic value parameter upper limit of setting is included in the code for issuing vibration measuring node in main aggregation node or relay node.
Program is calculated feature value parameter and is compared with setting value by vibration measuring node, if less than setting value, directly returns number
According to parameter, if above characteristic value, then application is needed to exit network to be added in warning net.
The process to exit network is similar with the process for adding in network, after the upload data command of main aggregation node is received,
Vibration measuring node sends the information that exits network, and after main aggregation node determines that the node can exit network, sends response instruction afterwards,
Successful flag bit is added in including node, adds in network success.
In addition to normally exitting network, vibration measuring node may fail during work, and the node of failure cannot
Feedback is carried out to the instruction that aggregation node is sent, in this case, aggregation node can count the number that node is not fed back, such as
Fruit number is more than certain number, then it is assumed that the vibration nodal point fails, and reports to server.After vibration measuring node is replaced, add in
It is also to use module described above with exitting network.
The availability of following experimental verification node addition and the program that exits network is designed herein.It sends broadcast singal and invites section
Point adds in main aggregation networks；Node replys the ACK addition network informations after receiving invitation instruction；It is true that aggregation node replys vibration measuring node
Recognize addition network, node adds in network success；Vibration measuring node sends the information that exits network to aggregation node；Aggregation node, which receives, to move back
Response instruction is sent after going out application；Node successfully exits network.
Rolling bearing is most widely used as the important component in rotary machine in various drive apparatus.It has
A series of advantage, such as：Coefficient of friction is small, some bearings not high to lubricating oil viscosity coefficient requirements can also be born simultaneously
Radial load and axial force.Rolling bearing is due to damage and after generating failure, may be reflected in during the work time Wen Sheng, noise,
The various aspects such as vibration.Theoretically, the symptom of several aspects can serve as the diagnosis basis of rolling bearing fault more than,
And practice have shown that, Analysis of Fault on Roller Bearing should based on vibration, supplemented by temperature monitoring, reason just temperature monitoring can between
It is reversed to reflect bearing working state, operational situation, therefore, vibration and monitoring variable of the temperature as bearing fault can be chosen.
Since temperature is gradual amount, temperature data is by the way of interval sampling, i.e., each node acquisition one per minute
Temperature data, sampling period can freely be set by user.After measuring point finds alert event, sample frequency can be accelerated, obtained
More warning messages, and can completely preserve alert event occur when information, for the later stage fault diagnosis provide it is rich
Rich resource.
Test platform structure is as shown in figure 5, power by belt is reached on axis, driven as power delivery section by motor
The rotation of axis.Loading device is made of pressure flange 7 and pressure copper sheathing 8, when depressing flange depressing force difference, the load of axis
Also it is different, it is possible to the bearing at axis both ends be allowed to work under different operating modes.Y132S-4 motors 16 on motor floor 17, pass through
Motor pulley 15 drives spindle pulley 11 to rotate, and the rotation of main shaft 6 is driven by the key 12 on main shaft, depresses 7 He of flange
Copper sheathing 8 to be depressed to be mounted on main shaft by axial baffle ring 9, bearing 5 is fixed on the both ends of axis, and whole device is all protected by transparent cover 3,
And pass through bolt 1 and washer 2 is fixed.Loading device is made of pressure flange 7 and pressure copper sheathing 8, when pressure flange depressing force
When different, the load of axis is also different, it is possible to the bearing at axis both ends be allowed to work under different operating modes.
Fig. 1 is by taking three subsidiary factory's LANs of Wuhan Steel stock Co., Ltd as an example.
The characteristics of the utility model embodiment is：Relatively wired on-line monitoring, wireless sensor network eliminate the phases such as cable
Pass expense, and wireless sensing node expense relative moderate are that enterprise is cost-effective；Wireless sensing module if there is failure,
The module of identical function is only needed to change, without other care and maintenances；Wireless sensor network module has multiple interfaces, can
It to couple multiple sensors, is assembled according to the difference of data acquisition demand, is offered convenience to the installation of monitoring device；Wirelessly
The network characteristic and hardware feature of sensor monitoring module determine that monitoring modular has stronger mobility, and layout personnel can be with
According to different monitoring indexes, different orientation is laid out, and can be placed on around equipment can also be embedded into inside equipment；
What the region and personnel that wireless sensor network monitoring system can also be applied to connect up and power supply supply is difficult cannot reach
Region.
Although the utility model is shown and described by reference to preferred embodiment, this specialty is common
Technical staff can make various variation in form and details it is to be appreciated that in the range of claims.
Claims (3)
1. a kind of bear vibration monitoring device based on wireless sensor network, it is characterised in that：Including wireless data collection device,
Wireless router, server and user's PC machine；
The wireless data collection device includes vibration acceleration sensor and temperature sensor, the wireless data collection device
It after the data collected are handled, through wireless router, is transmitted in the background data base of server, user is using in factory
Portion's enterprise network analysis Real-time Monitoring Data carries out the inquiry of historical data operation；
One wireless router and several wireless data collection devices constitute cluster, several clusters constitute entire monitoring pair
As sensing data is wirelessly transferred to wireless router by wireless data collection device, and each wireless router is born
The data forwarding of 1-16 wireless data collection device is blamed, server is finally forwarded the data to and is stored and analyzed, and carry
Supply enterprise customer's service；
Wireless data collection device, wireless router, server constitute wireless collection network system, the wireless collection network
System includes temperature measurement node, leader cluster node and aggregation node, and the cluster is made of leader cluster node and temperature measurement node, the thermometric section
The responsible collecting temperature information of point, and temperature information is transferred to leader cluster node, the leader cluster node receives temperature measurement node hair in cluster
The data come, and aggregation node is transmitted data to, the aggregation node is responsible for the data sending of leader cluster node to server；
The server uses high-performance server, and high-performance server is built-in with relative application software, the application software package
Include front end data acquisition program, database service, distributed application server program, Web service program；
User's PC machine includes client, and the client carries out monitoring in real time, real-time curve, statistical analysis, alarm row
Table, system administration, program update, system help operation.
2. the bear vibration monitoring device according to claim 1 based on wireless sensor network, it is characterised in that：The nothing
Line acquisition network system further include there are two relay node and two alarm leader cluster nodes.
3. the bear vibration monitoring device according to claim 1 based on wireless sensor network, it is characterised in that：The nothing
Network architecture in line acquisition network system is using stelliform connection topology configuration, and the stelliform connection topology configuration is by normal node and failure section
The subchannel transmission of point monitoring data.
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| CN201721590587.1U CN207408100U (en) | 2017-11-24 | 2017-11-24 | Bear vibration monitoring device based on wireless sensor network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907332A (en) * | 2017-11-24 | 2018-04-13 | 浙江机电职业技术学院 | Bear vibration monitoring device based on wireless sensor network |
| CN108900997A (en) * | 2018-07-10 | 2018-11-27 | 常州信息职业技术学院 | A kind of distributed wireless Sensor Network is used for industrial flow equipment chain detection method |
| CN112650166A (en) * | 2020-12-14 | 2021-04-13 | 云南迦南飞奇科技有限公司 | Production line condition big data system based on wireless network and diagnosis method thereof |
-
2017
- 2017-11-24 CN CN201721590587.1U patent/CN207408100U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907332A (en) * | 2017-11-24 | 2018-04-13 | 浙江机电职业技术学院 | Bear vibration monitoring device based on wireless sensor network |
| CN108900997A (en) * | 2018-07-10 | 2018-11-27 | 常州信息职业技术学院 | A kind of distributed wireless Sensor Network is used for industrial flow equipment chain detection method |
| CN108900997B (en) * | 2018-07-10 | 2020-11-24 | 常州信息职业技术学院 | Method for detecting industrial process equipment chain by using distributed wireless sensor network |
| CN112650166A (en) * | 2020-12-14 | 2021-04-13 | 云南迦南飞奇科技有限公司 | Production line condition big data system based on wireless network and diagnosis method thereof |
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