CN101498931A - Communication method for assembly line RFID interface control unit and upper computer - Google Patents
Communication method for assembly line RFID interface control unit and upper computer Download PDFInfo
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- CN101498931A CN101498931A CNA2008102426342A CN200810242634A CN101498931A CN 101498931 A CN101498931 A CN 101498931A CN A2008102426342 A CNA2008102426342 A CN A2008102426342A CN 200810242634 A CN200810242634 A CN 200810242634A CN 101498931 A CN101498931 A CN 101498931A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a communication method for a pipeline RFID interface controller and a host computer, wherein, each work station of the pipeline is provided with a RFID interface controller, and the interface controller is communicated with the host computer through a CAN bus interface. Before the pipeline runs, host computer software initializes the interface controller and sets the working state of the interface controller. When the pipeline runs, the interface controller collects material information, human-computer interaction terminal related information and equipment fault diagnosis information which are labeled with a RFID sign on the pipeline, and sends the collected information to the host computer through the CAN bus in a certain protocol format. Host computer monitoring software receives the information and processes the information, and controls an executive mechanism to act correspondingly, thus realizing optimal operation for distributing materials on the pipeline, and meanwhile, realizing the local displaying of pipeline state information on the human-computer interaction terminal. The method of the invention provides a means for the application of the RFID technology on the pipeline, for the collecting, monitoring and distributing scheduling of material and operation information, and for the efficient and information management of production.
Description
Technical field:
The present invention relates to dispersed manufacturing industry manufacture fields such as weaving, clothes, electronics, toy, food, automobile making, particularly relate to a kind of RFID interface controller of process line and means of communication of host computer of being used for.
Background technology
As everyone knows, China is the big country that makes processing industry, and the energy consumption high efficiency is low but tradition is made the processing industry more developed country.Along with the rise day by day of day being becoming tight of global energy, labor cost, make processing industry and be faced with cost and improve the baptism that profit descends.If infotech and modern ladder of management can be used for tradition manufacturing processing industry, particularly for more employing intelligent material allocations of dispersed manufacturing industry and supervisory system, can enhance productivity and reduce the energy and labour's consumption, thereby strengthen the whole enterprise competitive power.In the process line of dispersed manufacturing industry was used, the collection of on-the-spot material information and transmission were the bases of intelligent material allocation and supervisory system, adopted RFID (radio frequency identification) technology in conjunction with the field bus communication technology, can effectively address the above problem.
The RFID technology is a kind of non-contact automatic identification technology.Since the last century the nineties, the RFID technology has obtained widespread use in fields such as identification, material flow tracking, storehouse management, automobile makings.In this simultaneously, also emerge the producer of a lot of production rfid interrogators both at home and abroad, but the rfid interrogator interface mode of these producers differs, all need to build the proprietary system that is complementary with its product during application, and the special PC control software of exploitation at its read write line, difficulty that this just brings for the RFID The Application of Technology.
Summary of the invention:
The object of the present invention is to provide a kind of collection that realizes host computer to human-computer interaction terminal technological process associative operation information on the material information that posts the RFID label on the streamline and the station, and realize the real time monitoring and the Optimization Dispatching of material allocation state based on Information Monitoring, realize the assembly line RFID interface control unit that pipeline state information this locality on human-computer interaction terminal shows and the means of communication of host computer simultaneously.
Technical solution of the present invention is:
The means of communication of a kind of assembly line RFID interface control unit and host computer is characterized in that: each station of streamline is adorned a RFID interface controller, and interface controller is by CAN bus interface and upper machine communication; Before the streamline operation, upper computer software elder generation docking port controller carries out initialization, sets its duty; During the streamline operation, interface controller is controlled its rfid interrogator that is connected and human-computer interaction terminal mode of operation, and post the material information of RFID label on the acquisition stream waterline, human-computer interaction terminal related information and equipment fault diagnosis information, with certain protocol format accepted and believed breath is sent to host computer by the CAN bus, after host computer monitoring software is handled according to the information of receiving, the control executing mechanism corresponding actions, realization realizes the local demonstration on human-computer interaction terminal of pipeline state information simultaneously to the Optimization Dispatching of streamline material allocation.
The Physical layer of CAN bus communication agreement is followed CAN bus standard standard ISO11898, and the data link layer of communications protocol meets the definition of CAN2.0 protocol specification, and the application layer of communications protocol then defines according to the practical application of streamline.
Every communication signal utilizes a CAN Frame to realize, signal structure is formed the destination address of the signal that comprises two bytes, the signal source address of two bytes, the command type of a byte, and the command context of one to seven byte.
The CAN bus interface of described host computer, employing is installed PCI-CAN interface protocol transition card additional at host computer and is realized, inserts the PCI slot of host computer, draws the DB9 pin CAN bus interface of standard.
Described upper computer software docking port controller carries out the state initialization, comprises the following steps: the first step, device detection signal and replying; Second step, identification of equipment validity signal and replying; The 3rd step, site information synchronizing signal and replying; The 4th step, website character types setting signal and replying; Wherein the first step and the second step sequence of operation can be exchanged, and the 3rd step and FOUR EASY STEPS order can be exchanged.
Described equipment fault diagnosis information can be that the connection status of one or more rfid interrogators of website and interface controller is unusual, also can be that the connection status of website human-computer interaction terminal and interface controller is unusual.
System device and upper machine communication are to realize by the CAN bus interface.Each is produced on the station (to call website in the following text) controller all is installed at process line, controller and host computers whole on the streamline all pass through same CAN bus of CAN bus interface access, can carry out communication with the controller of each website on the streamline by this CAN bus host computer.
Controller also possesses rfid interrogator (hereinafter to be referred as read write line) interface and human-computer interaction terminal (hereinafter to be referred as terminal) interface except possessing the CAN bus interface.The function of read write line is to the RFID that material labels that transmits on the process line, carries out the read or write operation of processing technology relevant information.The function of terminal is to allow the stream line operation personnel to carry out processing technology correlation behavior feedback or parameter setting by keyboard, and this website corresponding state is shown by liquid crystal display is local.
Before streamline brings into operation processing tasks, earlier the controller of each website of streamline to be carried out initialization operation by host computer monitoring software, the state of setting controller has only the controller of correctly finishing initialization operation could move the normal process task.
After controller is finished initialization operation, the streamline processing tasks that brings into operation.The operating personnel of streamline carry out logging request by terminal to host computer, can carry out the operation relevant with technological process of production control by terminal after logining successfully.Operating personnel are to whole operation informations of terminal, all send to host computer by controller according to the communication signal of certain format, and determine the duty of this website according to the host computer answer signal.The duty of controller determines the mode of operation of this website read write line, also determines the demonstration of terminal corresponding information.
In the process of streamline operation processing tasks, the material that transmits on the track all posts the RFID label, when material transmitted the reading and writing device antenna identified region of a certain website of process by track, read write line can carry out read or write operation to material RFID label information according to the setting state of controller.Label information that read write line read or information write the result can send to host computer with certain data format by controller.The material RFID label information that host computer monitoring software is gathered according to read write line, the duty of incorporating pipeline running status and this website is carried out scheduling controlling to the material allocation flow direction.
During the streamline operation, whether read write line and terminal connection status that controller can detect this website installation in real time be correct, in case find that read write line or terminal connection status are incorrect, then send corresponding bomp signal by the CAN bus interface to host computer in real time, the controller equiment connection status of this website of notice host computer is unusual, can not work on; This website terminal liquid crystal display also can show corresponding bomp simultaneously.
The present invention is directed to prior art problems, adopt the hardware middleware equipment between a kind of rfid interrogator and the PC control software---RFID interface controller, can realize the on-the-spot RFID equipment control of discrete manufacturing business streamline, coordination, and carry out communication by the field bus communication interface and the PC control software of standard.The RFID interface controller is applied, improves industrial application of information technology management can for the RFID technology and bring help at discrete manufacturing business.At the sector application characteristics of discrete manufacturing business, the communication between RFID interface controller and the host computer need be arranged a kind of effective means of communication, to realize real-time collection, supervision and the dispensing scheduling of upper computer software to streamline material data and operation information.
The present invention can effectively solve controller when streamline is used and the communication interaction problems of host computer monitoring software, and then realizes that host computer monitoring software transmits the reading and write of material RFID label, bus communication status surveillance, terminal keyboard operation information acquisition to each website read write line connection status monitoring of streamline, the monitoring of terminal connection status, streamline.After the information that host computer monitoring software sends according to controller is handled, drive topworks and carry out corresponding actions,, realize that process line is efficient, information system management the Optimization Dispatching control of streamline material allocation.
Description of drawings:
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of RFID interface controller.
Fig. 2 is a network topology synoptic diagram that process line RFID interface controller is connected with host computer.
Fig. 3 is RFID interface controller and upper machine communication protocol frame format.
Embodiment
Middle controller of the present invention and upper machine communication are mutual, are to realize by the CAN bus interface.At each website of process line a controller is housed all, each controller has a CAN bus interface.For host computer, want with streamline on controller insert same CAN bus and controller to carry out communication mutual, can convert the original communication interface of host computer to the CAN bus interface and realize by installing the interface protocol transition card additional.Preferentially, the interface protocol transition card adopts the PCI-CAN card in the practical application, inserts the PCI slot of host computer, and the DB9 pin of drawing standard links to each other with the CAN bus.Article one, the network topology that is connected with host computer of process line controller as shown in Figure 2.
According to 7 layer protocol structures of ISO/OSI open system interconnection model, the CAN bus protocol only adopts wherein three layers promptly: Physical layer, data link layer and application layer.For the means of communication between middle controller of the present invention and the host computer, the Physical layer of communications protocol is followed CAN bus standard standard ISO11898, all according to the definition of CAN2.0 protocol specification, the application layer of communications protocol then specifically describes according to the practical application of streamline the data link layer of communications protocol below.
Each station is installed a controller on the streamline, and the read write line that a station terminal and some are installed simultaneously is attached thereto.Each website is installed read write line quantity according to different industries application demand difference, can be one or more, specifically as each website of clothes processing industry streamline read write line quantity being installed is two, and one is installed on the ENTRANCE that website props up track, and another is installed on the exit that website props up track.The function of read write line is to the RFID that material labels that transmits on the process line, carries out the read or write operation of processing technology relevant information.Read write line carry out actually read-only operation, a write operation still should read operation write operation again, decide according to different product processing technique flow processs.Some processing process is set and can directly be set in host computer monitoring software by operating personnel, and host computer monitoring software sends a signal to controller by the CAN bus and changes its duty, by controller the operation of read write line is controlled again.The setting of some technological process can be imported by the button operation of terminal, send request signal to host computer by controller then, after host computer monitoring software was handled, the echo reply signal changed its duty to controller, thereby influenced the control of controller to the read write line operation.
Before streamline brings into operation processing tasks, want earlier the controller of each website of streamline to be carried out initialization operation by host computer monitoring software, the duty of setting controller has only the controller of correctly finishing initialization operation could move the normal process task.Initialized flow process is as follows:
The first step, host computer monitoring software earlier by CAN bus all controller transmitting apparatus detection signal on streamline, after controller receives the device detection signal of host computer, detect answer signal to the host computer Returning equipment.
Because the CAN bus is short frame structure, every frame data length is 0 ~ 8 byte, and every communication signal utilizes a CAN Frame to realize among the present invention, and signal format defines as shown in Figure 3.Every frame data are represented the implementation of a communication signal, help reducing the complexity that communication is handled, and improve the real-time of total system communication.
According to the formal definition of above-mentioned communication signal, the content of device detection signal is 00 03 00 FF01 AA BB, and the purpose website that wherein preceding two bytes, 00 03 expression signals send is represented the controller site address that signal will send here; The third and fourth two byte 00 FF represent the source address that signal sends, and represent the site address of host computer here; 01 is the command type of device detection signal, and AA BB is a command context.Here Equipment Inspection answer signal content is 00 FF, 00 03 02AA BB, and 02 indication equipment detects the command type of answer signal here.
Second step, host computer monitoring software detects the controller transmitting apparatus legitimacy authentication signal of answer signal to Returning equipment, after legal controller receives the identification of equipment validity signal of host computer, illegal imitated controller returns correct identification of equipment validity answer signal to host computer, if can not return correct answer signal.
In the 3rd step, host computer monitoring software is to authenticating legal controller sending station dot information synchronizing signal, and some machining state relevant informations that host computer is kept send to controller, the duty of decision controller.After controller receives the site information synchronizing signal of host computer, return site information syn ack signal to host computer.
In the 4th step, host computer monitoring software is carried out character types to the website of finishing signal Synchronization operation and is set, and which peculiar function the decision controller possesses in that streamline work is in service.After controller receives the website character types setting signal of host computer, return the website character types to host computer and set answer signal, controller just enters streamline normal operation state then.
Controller receives the communication signal of each step initialization operation of host computer, when the echo reply signal is given host computer, shows corresponding prompt information on the terminal liquid crystal display that this controller is connected, and checks station state for local operator.
After controller is finished initialization operation, the streamline processing tasks that brings into operation, this moment, the operating personnel of streamline can carry out the logging request operation by terminal, and controller sends to host computer with the logging request signal and receives the login successful respond signal that host computer returns.Login successfully back character types according to different websites, operating personnel obtain certain operating right, can be undertaken and the relevant operation of technological process of production control by terminal, controller can send to host computer at the operation information of this website terminal according to the communication signal of certain format with operating personnel, and will determine the duty of this website according to the answer signal of host computer, control the mode of operation of this website read write line simultaneously, and on terminal, show the process information of corresponding operating.Specifically comprise: task code input, contain task material loading, material operation completion of processing, the check of material crudy, material processing tasks and finish, send auxiliary material request etc. for clothes process line technological process of production associative operation.
After the duty setting of terminal with a certain website of streamline, the material that transmits on the streamline track all posts the RFID label, when material passed through the reading and writing device antenna identified region of this website, read write line can be set according to the controller current state carry out read or write operation to material RFID label information.Label information that read write line read or information write the result can send to host computer with the communication signal of certain format by controller, host computer monitoring software is resolved this communication signal content, obtain material RFID label information, make judgement in conjunction with the duty of this website and the situations such as production load of whole streamline, and send signal driving topworks and move, change the streamline track configurations, influence next step transmission purpose of material and flow to, thereby realize the real-time monitoring and the Optimization Dispatching of material allocation.
During the streamline long-play, on-the-spot controller, read write line and terminal device may cause cisco unity malfunction because of power supply, communication or other fault, for the ease of field device maintenance, have defined equipment fault diagnosis mechanism among the present invention.
At first, whether the read write line of this website installation of controller detection in real time and terminal and its connection status be correct, in case find that read write line or terminal connection status are incorrect, then pass through the CAN bus interface in real time to host computer transmitting apparatus connection status error signal, the controller of this website of notice host computer is which equipment connection status is unusual, this website can not work on, and this website terminal liquid crystal display also can show corresponding bomp simultaneously.
Secondly, host computer is whole website transmitting apparatus connection status request signals on streamline at set intervals, after each controller receives equipment connection status request signal, to host computer Returning equipment connection status inquiry response signal, this site apparatus connection status is sent to host computer immediately.If can not receive the device status inquiries answer signal in the host computer certain hour, think that then this site controller connects fault, can not work on.
The streamline maintainer can keep in repair the fault site apparatus by the bomp information of host computer or terminal liquid crystal display, and fault is got rid of the back maintainer and can be resumed work to host computer transmission request by operating terminal.
Claims (6)
1, the means of communication of a kind of assembly line RFID interface control unit and host computer is characterized in that: each station of streamline is adorned a RFID interface controller, and interface controller is by CAN bus interface and upper machine communication; Before the streamline operation, upper computer software elder generation docking port controller carries out initialization, sets its duty; During the streamline operation, interface controller is controlled its rfid interrogator that is connected and human-computer interaction terminal mode of operation, and post the material information of RFID label on the acquisition stream waterline, human-computer interaction terminal related information and equipment fault diagnosis information, with certain protocol format accepted and believed breath is sent to host computer by the CAN bus, after host computer monitoring software is handled according to the information of receiving, the control executing mechanism corresponding actions, realization realizes the local demonstration on human-computer interaction terminal of pipeline state information simultaneously to the Optimization Dispatching of streamline material allocation.
2, the means of communication of assembly line RFID interface control unit according to claim 1 and host computer, it is characterized in that: the Physical layer of CAN bus communication agreement is followed CAN bus standard standard ISO11898, the data link layer of communications protocol meets the definition of CAN2.0 protocol specification, and the application layer of communications protocol then defines according to the practical application of streamline.
3, the means of communication of assembly line RFID interface control unit according to claim 1 and host computer, it is characterized in that: every communication signal utilizes a CAN Frame to realize, signal structure is formed the destination address of the signal that comprises two bytes, the signal source address of two bytes, the command type of a byte, and the command context of one to seven byte.
4, the means of communication of assembly line RFID interface control unit according to claim 1 and host computer, it is characterized in that: the CAN bus interface of described host computer, employing is installed PCI-CAN interface protocol transition card additional at host computer and is realized, insert the PCI slot of host computer, draw the DB9 pin CAN bus interface of standard.
5, the means of communication of assembly line RFID interface control unit according to claim 1 and host computer is characterized in that: described upper computer software docking port controller carries out the state initialization, comprises the following steps: the first step, device detection signal and replying; Second step, identification of equipment validity signal and replying; The 3rd step, site information synchronizing signal and replying; The 4th step, website character types setting signal and replying; Wherein the first step and the second step sequence of operation can be exchanged, and the 3rd step and FOUR EASY STEPS order can be exchanged.
6, the means of communication of assembly line RFID interface control unit according to claim 1 and host computer, it is characterized in that: described equipment fault diagnosis information can be that the connection status of one or more rfid interrogators of website and interface controller is unusual, also can be that the connection status of website human-computer interaction terminal and interface controller is unusual.
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Cited By (13)
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| CN101847001A (en) * | 2010-05-25 | 2010-09-29 | 李元熙 | Power-getting management system of apparatus based on RFID (Radio Frequency Identification Devices) and CAN (Controller Area Network) bus technology as well as method |
| CN102063119A (en) * | 2010-11-11 | 2011-05-18 | 北京三博中自科技有限公司 | Equipment failure prediction method based on point polling data and DCS (Data Communication System) online data |
| CN102608976A (en) * | 2012-03-20 | 2012-07-25 | 广州市思尔电子科技有限公司 | Method for synchronously controlling clothing system of gliding suspension assembly line |
| CN102880137A (en) * | 2012-09-24 | 2013-01-16 | 南通明兴科技开发有限公司 | Control method and device for production line processes |
| CN103616856A (en) * | 2013-12-11 | 2014-03-05 | 哈尔滨工业大学 | Database-based automobile instrument assembly flow line operation control method |
| CN103760868A (en) * | 2014-01-24 | 2014-04-30 | 哈尔滨工业大学 | Automobile meter assembly line tracking system based on database |
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| CN106354059A (en) * | 2016-10-12 | 2017-01-25 | 广东技术师范学院 | CAN (controller area network) bus-based intelligent garment manufacturing suspension control system |
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| CN101847001A (en) * | 2010-05-25 | 2010-09-29 | 李元熙 | Power-getting management system of apparatus based on RFID (Radio Frequency Identification Devices) and CAN (Controller Area Network) bus technology as well as method |
| CN102063119A (en) * | 2010-11-11 | 2011-05-18 | 北京三博中自科技有限公司 | Equipment failure prediction method based on point polling data and DCS (Data Communication System) online data |
| CN102063119B (en) * | 2010-11-11 | 2012-10-24 | 北京三博中自科技有限公司 | Equipment failure prediction method based on point polling data and DCS (Data Communication System) online data |
| CN102608976A (en) * | 2012-03-20 | 2012-07-25 | 广州市思尔电子科技有限公司 | Method for synchronously controlling clothing system of gliding suspension assembly line |
| CN102880137A (en) * | 2012-09-24 | 2013-01-16 | 南通明兴科技开发有限公司 | Control method and device for production line processes |
| CN102880137B (en) * | 2012-09-24 | 2015-02-25 | 南通明兴科技开发有限公司 | Control method and device for production line processes |
| US10419075B2 (en) | 2013-03-15 | 2019-09-17 | Keyssa, Inc. | Virtualized physical layer adapted for EHF contactless communication |
| US10903875B2 (en) | 2013-03-15 | 2021-01-26 | Keyssa, Inc. | Virtualized physical layer adapted for EHF contactless communication |
| CN105230036A (en) * | 2013-03-15 | 2016-01-06 | 凯萨股份有限公司 | Be suitable for physical layer and the virtualize physical layer of EHF contactless communication |
| CN105230036B (en) * | 2013-03-15 | 2019-06-28 | 凯萨股份有限公司 | Physical layer and virtualization physical layer suitable for EHF contactless communication |
| CN103616856B (en) * | 2013-12-11 | 2016-03-09 | 哈尔滨工业大学 | A kind of automobile instrument assembling line method of controlling operation thereof based on database |
| CN103616856A (en) * | 2013-12-11 | 2014-03-05 | 哈尔滨工业大学 | Database-based automobile instrument assembly flow line operation control method |
| CN103760868B (en) * | 2014-01-24 | 2016-05-25 | 哈尔滨工业大学 | A kind of automobile instrument assembling line tracking system based on database |
| CN103760868A (en) * | 2014-01-24 | 2014-04-30 | 哈尔滨工业大学 | Automobile meter assembly line tracking system based on database |
| CN105512707A (en) * | 2016-01-21 | 2016-04-20 | 韩松 | Monitoring system and method for operation site |
| CN105959967B (en) * | 2016-04-21 | 2019-12-20 | 上海庆科信息技术有限公司 | Control instruction generation method and system based on WI-FI module |
| CN105959967A (en) * | 2016-04-21 | 2016-09-21 | 上海庆科信息技术有限公司 | Control instruction generating method and system based on WI-FI module |
| CN106651099A (en) * | 2016-10-10 | 2017-05-10 | 上海欧洛特实业有限公司 | Intelligent hanger intelligent assembly line real-time data acquisition and control system |
| CN106354059A (en) * | 2016-10-12 | 2017-01-25 | 广东技术师范学院 | CAN (controller area network) bus-based intelligent garment manufacturing suspension control system |
| CN108319993A (en) * | 2017-12-26 | 2018-07-24 | 钟建哲 | A kind of cloth processing management system for monitoring |
| CN109765868A (en) * | 2019-02-14 | 2019-05-17 | 宁波吉利汽车研究开发有限公司 | The conllinear production control method of multi-vehicle-type, device, equipment and system |
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