CN110177149A - A kind of stranding machine network monitoring system for things - Google Patents
A kind of stranding machine network monitoring system for things Download PDFInfo
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- CN110177149A CN110177149A CN201910486016.0A CN201910486016A CN110177149A CN 110177149 A CN110177149 A CN 110177149A CN 201910486016 A CN201910486016 A CN 201910486016A CN 110177149 A CN110177149 A CN 110177149A
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- information
- stranding machine
- speed
- control module
- mainshaft
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
- G05D13/62—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention discloses a kind of stranding machine network monitoring system for things of internet of things field is related to, solve the problems, such as that monitoring efficiency is lower.Technical points are: including stranding machine control module, network communication module, Internet of Things cloud platform and client, network communication module is communicated to connect by Ethernet and stranding machine control module, network communication module is communicated to connect by mobile data network and Internet of Things cloud platform, stranding machine control module sends operating parameter information to Internet of Things cloud platform by network communication module, operating parameter information includes setting speed of mainshaft information, reel rotary speed information, single branch line footpath M, twisted number S, set rice number information, twisted tension information, stranding distance information, complete rice number information and twisted line footpath information.The function that more stranding machines of remote monitor can be achieved, does not need operator and goes to the control panel of stranding machine to be monitored and control, to achieve the effect that improve detection efficiency.
Description
Technical field
The present invention relates to internet of things field, especially a kind of stranding machine network monitoring system for things.
Background technique
Stranding machine is a kind of equipment for stranded conductor, including main shaft, reel and strand bow, and the strand bow is fixed on master
On axis, main shaft and reel pass through respectively through motor driven, and conducting wire is passed through and twists bow, and main shaft, which drives, twists bow rotation, thus
Cabling is led in realization.In order to improve the production efficiency, more stranding machines can be set in usual factory, but existing stranding machine is most
Several control panels are all set on stranding machine, when twisted pair wire machine being needed to be monitored, staff can only be allowed to be moved to twisted wire
Control panel on machine is monitored, and is inconvenient, serious to affect monitoring efficiency.Therefore monitoring efficiency exists in the prior art
Lower problem.
Summary of the invention
In order to overcome the disadvantages mentioned above of the prior art, the object of the present invention is to provide a kind of monitoring of stranding machine Internet of Things to be
System, has the advantages that monitoring efficiency is higher.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of stranding machine network monitoring system for things, including stranding machine control module, network communication module, Internet of Things cloud platform
And client,
Prestored in the stranding machine control module setting speed of mainshaft information, reel rotary speed information, single branch line footpath M,
Twisted number S, twisted line footpath information, stranding distance information, setting rice number information and twisted tension information, the stranding distance information are winding
Cylinder revolving speed is divided by the setting speed of mainshaft, and the stranding machine control module is according to setting speed of mainshaft information, reel rotary speed information
With the stranding distance information control stranding machine speed of mainshaft, twisted tension, the completion rice number of the stranding machine control module detection stranding machine
Information, the twisted line footpath information be coefficient 1.155 multiplied by single branch line footpath M multiplied by the half power of twisted number S,
The network communication module is communicated to connect by Ethernet and stranding machine control module, and the network communication module is logical
Mobile data network and Internet of Things cloud platform is crossed to communicate to connect, the IP address of stranding machine control module and network communication module
The IP address of WAN is located in same network segment, and the stranding machine control module is sent out by network communication module to Internet of Things cloud platform
Send operating parameter information, the operating parameter information include setting speed of mainshaft information, reel rotary speed information, single branch line footpath M,
Twisted number S, setting rice number information, twisted tension information, stranding distance information, rice number information and twisted line footpath information are completed,
The Internet of Things cloud platform is the server cluster of more Ali's Cloud Server components, and the client includes computer
Client and cell phone client, the computer client and cell phone client are for logging in Internet of Things cloud platform.
As a further improvement of the present invention: the stranding machine control module includes PLC, frequency converter, and the frequency converter is logical
The ac frequency control stranding machine speed of mainshaft and stranding machine reel revolving speed are overregulated, the PLC and frequency converter are electrically connected.
As a further improvement of the present invention: the stranding machine control module further includes the main shaft for detecting the speed of mainshaft
Speed probe, the speed of mainshaft sensor send current speed of mainshaft information, the work ginseng to stranding machine control module
Number information further includes current speed of mainshaft information.
As a further improvement of the present invention: the stranding machine control module includes man-machine interaction panel.
As a further improvement of the present invention: multiple, multiple stranding machine controls are arranged in the stranding machine control module altogether
The IP address of molding block in ethernet networks is located in same network segment and different.
Compared with prior art, the beneficial effects of the present invention are:
User is transmitted to object by client sign-on access Internet of Things cloud platform so as to read from stranding machine control module
Stranding machine operating parameter information in cloud platform of networking.User can also send adjusting parameter to Internet of Things cloud platform by client
Adjusting parameter information is sent to stranding machine control by network communication module again by adjusting parameter information by information, Internet of Things cloud platform
Molding block.Finally realize the function of remote monitor stranding machine, do not need operator go to the control panel of stranding machine into
Row is monitored and controlled, to achieve the effect that improve detection efficiency.
The main shaft and reel of stranding machine pass through different variable-frequency motors respectively and are driven, and control frequency converter by PLC
To different variable-frequency motor transmission exchange electric drive variable-frequency motor runnings, so that stranding machine main shaft and reel be driven to rotate.Benefit
Change the ac frequency transmitted to variable-frequency motor with PLC control frequency converter, the revolving speed of variable-frequency motor is adjusted, to realize adjustment
The effect of main shaft and reel revolving speed.
The operating parameter information of the stranding machine control module of different IP addresses is transmitted separately to Internet of Things by network communication module
Net cloud platform improves monitoring efficiency to make user that can read the operating parameter information of distinct device by client.It can also incite somebody to action
Adjusting parameter information is respectively sent in the stranding machine control module of different IP addresses, so as to the different twisted wire of far distance control
Machine.It is finally reached the effect of remote monitor difference stranding machine, plays the role of improving monitoring efficiency.
Detailed description of the invention
Fig. 1 is the connection of stranding machine control module, network communication module, Internet of Things cloud platform and client in the present embodiment
Structural schematic diagram.
Specific embodiment
Now in conjunction with Detailed description of the invention, the present invention is further described with embodiment:
Embodiment:
A kind of stranding machine network monitoring system for things, as shown in Figure 1, including stranding machine control module, network communication module, object
Cloud platform of networking and client;
Setting speed of mainshaft information is prestored in stranding machine control module, reel rotary speed information, single branch line footpath M, is twisted
Number S, twisted line footpath information, stranding distance information, setting rice number information and twisted tension information, stranding distance information are that reel revolving speed removes
To set the speed of mainshaft, stranding machine control module is according to setting speed of mainshaft information, reel rotary speed information and stranding distance information control
The stranding machine speed of mainshaft processed, twisted wire tension, stranding machine control module detect the completion rice number information of stranding machine, are twisted line footpath information
For coefficient 1.155 multiplied by single branch line footpath M multiplied by the half power of twisted number S;
Network communication module is communicated to connect by Ethernet and stranding machine control module, and network communication module passes through mobile number
It is communicated to connect according to network and Internet of Things cloud platform, the IP of the WAN of the IP address and network communication module of stranding machine control module
Location is located in same network segment, and stranding machine control module sends running parameter letter to Internet of Things cloud platform by network communication module
Breath, operating parameter information include setting speed of mainshaft information, reel rotary speed information, single branch line footpath M, twisted number S, setting rice
Number information, stranding distance information, completes rice number information and twisted line footpath information at twisted tension information;
Internet of Things cloud platform be more Ali's Cloud Server components server cluster, client include computer client and
Cell phone client, computer client and cell phone client are for logging in Internet of Things cloud platform.In the present embodiment, computer client
Pass through mobile data network with cell phone client and Internet of Things cloud platform communicates to connect.
Stranding machine control module includes PLC, frequency converter and meter counter, and meter counter is used to measure the stranded conductor wound long
Degree, meter counter are set on stranding machine and abut with stranded conductor, and stranding machine control module detects stranding machine by meter counter
Rice number information is completed, frequency converter controls the stranding machine speed of mainshaft and stranding machine reel revolving speed, PLC by adjusting ac frequency
It is electrically connected with frequency converter.In the present embodiment, PLC concrete model is siemens PLC.
Stranding machine control module further includes the speed of mainshaft sensor for detecting the speed of mainshaft, speed of mainshaft sensor to
Stranding machine control module sends current speed of mainshaft information, and operating parameter information further includes current speed of mainshaft information.
Stranding machine control module includes man-machine interaction panel.In the present embodiment, man-machine interaction panel passes through data/address bus
It is electrically connected with stranding machine control module.
Site operation personnel can select to control by man-machine interaction panel twisted pair wire machine as needed, further facilitate
Monitoring improves monitoring efficiency.
Stranding machine control module be arranged altogether it is multiple, the IP address of multiple stranding machine control modules in ethernet networks be located at it is same
It is in network segment and different.
The present embodiment has the advantage that
Operating parameter information is transmitted to Internet of Things cloud platform by stranding machine control module in real time, and user is stepped on by client
Accessing internet of things cloud platform is recorded, so as to read the stranding machine setting being transmitted in Internet of Things cloud platform from stranding machine control module
Speed of mainshaft information, single branch line footpath M, twisted number S, setting rice number information, twisted tension information, twists reel rotary speed information
Away from information, rice number information and twisted line footpath information are completed, realizes the function that the operating condition of remote monitoring stranding machine carries out.User
Adjusting parameter information can be sent to Internet of Things cloud platform by client, adjusting parameter information is passed through net again by Internet of Things cloud platform
Adjusting parameter information is sent to stranding machine control module by network communication module, adjusts stranding machine control module for adjusting parameter information
It is updated to new operating parameter information, and is sent and is instructed to frequency converter according to new operating parameter information, so as to play control
The effect of the speed of mainshaft and reel revolving speed realizes the function of far distance control stranding machine.Finally realize remote monitor strand
The function of line machine, does not need operator and goes to the control panel of stranding machine to be monitored and control, to reach raising detection
The effect of efficiency.
The main shaft and reel of stranding machine pass through different variable-frequency motors respectively and are driven, and control frequency converter by PLC
To different variable-frequency motor transmission exchange electric drive variable-frequency motor runnings, so that stranding machine main shaft and reel be driven to rotate.Benefit
Change the ac frequency transmitted to variable-frequency motor with PLC control frequency converter, the revolving speed of variable-frequency motor is adjusted, to realize adjustment
The effect of main shaft and reel revolving speed.
The current rotating speed of main shaft is monitored by speed of mainshaft sensor, and current speed of mainshaft information is sent to Internet of Things
Cloud platform, user can read current speed of mainshaft information from Internet of Things cloud platform by client, be used for further so as to allow
Facilitate the working condition of monitoring stranding machine, improves monitoring efficiency.According to current speed of mainshaft information and setting speed of mainshaft information
As the reference that stranding machine failure is, facilitate the inspection and elimination of failure.If current speed of mainshaft information shows stranding machine main shaft
Revolving speed is zero, then can determine whether that stranding machine does not carry out twisted wire operation, is in halted state;If current speed of mainshaft information display twists
The line machine speed of mainshaft is not zero, then can determine whether that stranding machine is operating.
The operating parameter information of the stranding machine control module of different IP addresses is transmitted separately to Internet of Things by network communication module
Net cloud platform improves monitoring efficiency to enable users to the operating parameter information for reading distinct device by client.It can also incite somebody to action
Adjusting parameter information is respectively sent in the stranding machine control module of different IP addresses, so as to the different twisted wire of far distance control
Machine.It is finally reached the effect of remote monitor difference stranding machine, plays the role of improving monitoring efficiency.
In conclusion after those skilled in the art read file of the present invention, according to the technique and scheme of the present invention with
Technical concept is not necessarily to creative mental labour and makes other various corresponding conversion schemes, belongs to the model that the present invention is protected
It encloses.
Claims (5)
1. a kind of stranding machine network monitoring system for things, it is characterised in that: including stranding machine control module, network communication module, object
Cloud platform of networking and client,
Setting speed of mainshaft information is prestored in the stranding machine control module, reel rotary speed information, single branch line footpath M, is twisted
Number S, twisted line footpath information, stranding distance information, setting rice number information and twisted tension information, the stranding distance information turn for reel
Speed is divided by the setting speed of mainshaft, and the stranding machine control module is according to setting speed of mainshaft information, reel rotary speed information and strand
The stranding machine speed of mainshaft, twisted wire tension are controlled away from information, the stranding machine control module detects the completion rice number information of stranding machine,
The twisted line footpath information be coefficient 1.155 multiplied by single branch line footpath M multiplied by the half power of twisted number S,
The network communication module is communicated to connect by Ethernet and stranding machine control module, and the network communication module passes through shifting
Dynamic data network and Internet of Things cloud platform communicate to connect, the WAN's of the IP address and network communication module of stranding machine control module
IP address is located in same network segment, and the stranding machine control module sends work to Internet of Things cloud platform by network communication module
Parameter information, the operating parameter information include setting speed of mainshaft information, reel rotary speed information, single branch line footpath M, twisted branch
Number S, setting rice number information, twisted tension information, stranding distance information, rice number information and twisted line footpath information are completed,
The Internet of Things cloud platform is the server cluster of more Ali's Cloud Server components, and the client includes computer client
End and cell phone client, the computer client and cell phone client are for logging in Internet of Things cloud platform.
2. stranding machine network monitoring system for things according to claim 1, it is characterised in that: the stranding machine control module packet
PLC, frequency converter are included, ac frequency controls the stranding machine speed of mainshaft to the frequency converter and stranding machine reel turns by adjusting
Speed, the PLC and frequency converter are electrically connected.
3. stranding machine network monitoring system for things according to claim 1, it is characterised in that: the stranding machine control module packet
The speed of mainshaft sensor for detecting the speed of mainshaft is included, the speed of mainshaft sensor sends current to stranding machine control module
Speed of mainshaft information, the operating parameter information further include current speed of mainshaft information.
4. stranding machine network monitoring system for things according to claim 1, it is characterised in that: the stranding machine control module packet
Include man-machine interaction panel.
5. stranding machine network monitoring system for things according to claim 1, it is characterised in that: the stranding machine control module is total
It is arranged multiple, the IP address of multiple stranding machine control modules in ethernet networks is located in same network segment and different.
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CN201910486016.0A CN110177149A (en) | 2019-06-05 | 2019-06-05 | A kind of stranding machine network monitoring system for things |
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CN201910486016.0A CN110177149A (en) | 2019-06-05 | 2019-06-05 | A kind of stranding machine network monitoring system for things |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110077905A (en) * | 2019-06-03 | 2019-08-02 | 广州市鸿辉电工机械有限公司 | A kind of method and device thereof controlling stranding machine takeup tension |
CN110473673A (en) * | 2019-09-20 | 2019-11-19 | 昆山富辰迪隆智能机电科技有限公司 | A kind of intelligence twisted wire system |
CN110716521A (en) * | 2019-10-30 | 2020-01-21 | 苏州安驰控制系统有限公司 | Control method of stranding machine and stranding control system |
CN110797150A (en) * | 2019-10-30 | 2020-02-14 | 苏州安驰控制系统有限公司 | Method, device and system for controlling drawing and computer storage medium |
CN110837232A (en) * | 2019-10-30 | 2020-02-25 | 苏州安驰控制系统有限公司 | Flat cable control method, equipment, system and computer storage medium |
CN113090033A (en) * | 2021-05-13 | 2021-07-09 | 重庆交通职业学院 | Control method and device of mandrel tractor for steel strand bundle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101599323A (en) * | 2009-07-03 | 2009-12-09 | 向继光 | Can realize the four-pitch wire twisting machine that serialization is produced |
CN103268792A (en) * | 2013-05-31 | 2013-08-28 | 广州铁路职业技术学院 | Control system of stranding machine and control method of stranding machine |
CN103410035A (en) * | 2013-08-26 | 2013-11-27 | 昆山市富川机电科技有限公司 | Novel 1+6+12 one-step stranding high-speed stranding machine |
CN204883306U (en) * | 2015-08-08 | 2015-12-16 | 广东粤元机电科技有限公司 | Stranded conductor equipment control system |
CN206774322U (en) * | 2017-04-07 | 2017-12-19 | 东莞市三青电子科技有限公司 | The automatic stranding machine of three lines |
-
2019
- 2019-06-05 CN CN201910486016.0A patent/CN110177149A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101599323A (en) * | 2009-07-03 | 2009-12-09 | 向继光 | Can realize the four-pitch wire twisting machine that serialization is produced |
CN103268792A (en) * | 2013-05-31 | 2013-08-28 | 广州铁路职业技术学院 | Control system of stranding machine and control method of stranding machine |
CN103410035A (en) * | 2013-08-26 | 2013-11-27 | 昆山市富川机电科技有限公司 | Novel 1+6+12 one-step stranding high-speed stranding machine |
CN204883306U (en) * | 2015-08-08 | 2015-12-16 | 广东粤元机电科技有限公司 | Stranded conductor equipment control system |
CN206774322U (en) * | 2017-04-07 | 2017-12-19 | 东莞市三青电子科技有限公司 | The automatic stranding machine of three lines |
Non-Patent Citations (1)
Title |
---|
王灿: ""基于云平台的物联网远程监控系统研究"", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110077905A (en) * | 2019-06-03 | 2019-08-02 | 广州市鸿辉电工机械有限公司 | A kind of method and device thereof controlling stranding machine takeup tension |
CN110473673A (en) * | 2019-09-20 | 2019-11-19 | 昆山富辰迪隆智能机电科技有限公司 | A kind of intelligence twisted wire system |
CN110716521A (en) * | 2019-10-30 | 2020-01-21 | 苏州安驰控制系统有限公司 | Control method of stranding machine and stranding control system |
CN110797150A (en) * | 2019-10-30 | 2020-02-14 | 苏州安驰控制系统有限公司 | Method, device and system for controlling drawing and computer storage medium |
CN110837232A (en) * | 2019-10-30 | 2020-02-25 | 苏州安驰控制系统有限公司 | Flat cable control method, equipment, system and computer storage medium |
CN110837232B (en) * | 2019-10-30 | 2021-07-13 | 苏州安驰控制系统有限公司 | Flat cable control method, equipment, system and computer storage medium |
CN113090033A (en) * | 2021-05-13 | 2021-07-09 | 重庆交通职业学院 | Control method and device of mandrel tractor for steel strand bundle |
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