CN106779316B - Radar electronic equipment makes thing allies oneself with system - Google Patents

Abstract

The invention discloses a radar electronic equipment manufacturing internet of things system which comprises a sensing layer, a transmission layer, a data layer, an application layer and a standard layer. The sensing layer is a base and receives manufacturing resource state information required by manufacturing of radar electronic equipment. The transmission layer realizes information communication and interoperation between the acquired data of the sensing layer and a data center of the data layer or between the acquired data of the sensing layer and an application system of the application layer. The data layer effectively processes mass data acquired by manufacturing the Internet of things, detects key event information, and achieves resource scheduling, material distribution and workshop lean management based on data processing results. The application layer realizes the lean management and intelligent scheduling of manufacturing resources and the intelligent matching and balanced logistics distribution of materials. The standard layer realizes the information safety of the radar electronic equipment manufacture in the Internet of things and the standardization of the radar electronic equipment manufacture in the Internet of things.

Description

Radar electronic equipment makes thing allies oneself with system

Technical Field

The invention relates to an internet of things system, in particular to a radar electronic equipment manufacturing internet of things system.

Background

With the development of modern mass production and the progress of scientific technology, the functions of radar electronic equipment are increasingly improved, the automation degree is higher and higher, and the development is towards high integration, dual polarization and intellectualization. For example, a new generation of airborne early warning radar, an integrated electronic information system, a national missile early warning defense system, a next generation command information system, an electronic warfare system, a world-ground integrated military information network, a space integrated electronic information system and the like are typical new generation radar electronic equipment, and the system is not only highly complex in structure and abnormally rich in functions, but also has increasingly extreme service environment and very strong operation control capability. The radar electronic equipment relates to the fields of radar, communication, navigation, measurement and control, electronic warfare, data chains, information systems and the like, needs electronic information functional materials, electronic components and energy sources to guarantee, needs advanced design and digital technology to support in the equipment development process relating to the disciplines of mechanics, electricity, light, magnetism, heat and the like and the comprehensive integration thereof, needs advanced manufacture of an internet of things technology to guarantee, and needs a full life cycle test, test and operation and maintenance technology to guarantee. Therefore, the radar electronic equipment has the characteristics of more related equipment fields, more oriented technical subjects, more matched weapon platforms and fast technical update.

At present, the following defects mainly exist: (1) the radar electronic equipment presents the development trend of integration and dual polarization, the digital technology becomes the main research and development means of the radar electronic equipment, but the digital control means is lacked in the downstream links such as manufacturing, the manufacturing of an internet of things technology is urgently needed to form the digital information flow of a workshop, and the foundation is laid for the further application of the digital and intelligent technology. (2) The radar electronic equipment has the characteristics of variable platforms, various products and small batch of products, and has the manufacturing characteristics of various materials, wide process door types, coexistence of electronic manufacturing and mechanical manufacturing, and coexistence of manual manufacturing and automatic production lines. At present, the capacity of real-time and accurate management of manufacturing resources and a manufacturing process is lacked, and intelligent identification, positioning, tracking, analysis, monitoring and management of indexes of people, machines, materials, methods and rings in the whole production process are realized through a manufacturing internet of things technology. (3) The value chain of radar electronic equipment is moving downstream, the traceability management capability of product manufacturing and service processes needs to be improved urgently, and the manufacture internet of things application supporting the whole life cycle of design, manufacture, use, recovery and the like of equipment becomes the development direction and trend in the future.

Disclosure of Invention

In order to avoid the defects in the prior art, the invention provides a radar electronic equipment manufacturing Internet of things system.

The invention is realized by the following technical scheme: a radar electronic equipment manufacturing internet of things system: the system comprises a sensing layer, a transmission layer, a data layer, an application layer and a standard layer; the sensing layer is a foundation and is used for receiving manufacturing resource state information required by manufacturing of radar electronic equipment; the transmission layer realizes information communication and interoperation between the acquired data of the sensing layer and a data center of the data layer or between the acquired data of the sensing layer and an application system of the application layer; the data layer effectively processes mass data acquired by manufacturing the Internet of things, detects key event information, and realizes resource scheduling, material distribution and workshop lean management based on a data processing result; the application layer realizes the lean management and intelligent scheduling of manufacturing resources, and the intelligent matching and balanced logistics distribution of materials; the standard layer realizes the information safety of the radar electronic equipment manufacture in the Internet of things and the standardization of the radar electronic equipment manufacture in the Internet of things.

As a further improvement of the scheme, the sensing layer acquires the manufacturing resource state information of equipment, materials, personnel, workpieces and knives of radar electronic equipment manufacturing through at least one of RFID, sensors and laser scanning.

As a further improvement of the above solution, the transmission layer implements information communication and interoperation between the collected data of the sensing layer and the data center of the data layer or between the collected data of the sensing layer and the application system of the application layer through at least one of a sensing node, middleware, and a heterogeneous network.

Further, the sensing node comprises a field reading head.

Further, the sensing node comprises a moving read head.

Further, the sensing node comprises a distributed intelligent reading head.

Furthermore, the framework of the middleware comprises an edge agent module, a network management module and an event management module, the middleware is downwards connected with hardware modules such as a tag reader-writer, a sensor, a controller and a visual unit on a workshop site, and upwards butted with an application program on a workshop/enterprise level through an application interface to form a channel for data uploading and issuing.

Further, the framework of the heterogeneous network comprises an access module, a communication module and a management module; the access module provides access interfaces for various heterogeneous networks; the communication module realizes interconnection and intercommunication of heterogeneous networks, extracts effective data segments in a data packet, quickly converts the effective data segments into another network protocol, and encapsulates the effective data segments into a required data packet; the management module is a service module of the system and is used for network access registration and network logout of each terminal node in the heterogeneous network, dynamic scheduling and visual management of multi-gateway load balancing.

As a further improvement of the above scheme, the application layer constructs a material flow management platform by timely acquiring the material state, the material position, the material inventory and the logistics personnel position, so as to help the management personnel timely and conveniently know the material condition, the logistics equipment condition and the logistics personnel condition, thereby realizing real-time monitoring and lean management of the logistics resources such as the material, the material transportation equipment and the logistics personnel.

As a further improvement of the scheme, the method for processing the data stream of the radar electronic equipment manufacture in an Internet of things manner and detecting the key event mainly comprises the following steps:

read atomic event: reading atomic event operation from a mass multi-source data stream generated in a manufacturing Internet of things environment; NFA matching: matching the read mass atomic events by using a non-deterministic finite automaton to obtain related atomic events;

and (4) hash table storage: storing the detected massive related atomic events, namely intermediate results, by using technologies such as Hash table structure table mapping, inserting and the like;

and (3) Hash table lookup and output: and searching a related event sequence by utilizing a hash table checking technology and outputting the related event sequence, namely the complex event.

The invention has the following beneficial effects:

1) a novel heterogeneous sensing device integration technology is provided. Aiming at the information perception of each production state in the manufacturing process, different devices are adopted for acquisition, such as the real-time acquisition of manufacturing data based on a field terminal, the information acquisition of the production process based on a sensor, the acquisition of the in-process state of multiple data carriers based on RFID, bar codes and the like. The integration of the equipment is realized for the development data interface of the sensing equipment including the field terminal, the sensor, the RFID and the bar code.

2) A man-machine-material-method-ring interconnection technology for a radar electronic equipment manufacturing workshop is provided. The method takes a production operation plan of a typical functional component of radar electronic equipment as a main line, and utilizes an end-to-end information interaction and middleware technology based on RFID to carry out electronic unified identification, acquisition and tracking on information such as a field device state, a material state, a technical state and the like, thereby realizing the interconnection of plan management, logistics management and process information and supporting the integrated operation of a production process.

3) A production task dynamic scheduling strategy and method based on real-time information are provided. A multi-level event system between a dynamic associated production plan execution process and real-time events of different manufacturing resources is established through data stream processing and key event detection technologies, a time sequence relation and a logic relation between the multi-level events are modeled through a semantic-based description method, active perception of the production plan execution state is achieved, a time-sharing multi-level dynamic optimization strategy and method are provided, dimension reduction processing of complexity of a scheduling problem is achieved, a robust global and local optimization repairing scheme is provided based on real-time information, and flexibility and robustness of the physical connection manufacturing execution process are improved.

4) An intelligent distribution technology based on real-time material state sensing is provided. The method comprises the steps of utilizing an internet of things sensing network to monitor the existing stock of stations, developing a distribution algorithm to calculate the accurate quantity of the missing goods of each station and the station grouping condition of the missing goods according to the real-time production plan arrangement of the system, utilizing a material equipment scheduling algorithm to select an optimal distribution device and a scheduling path according to the information of the missing goods and the information of distribution equipment by a material distribution system, combining the real-time tracking and scheduling functions of the internet of things technology, automatically dispatching the distribution device to a storage management department to pick up the materials, and realizing accurate real-time distribution according to the optimal distribution path and the accurate distribution quantity given by the system.

Drawings

FIG. 1 is a block diagram of a system for manufacturing an Internet of things for radar electronic equipment according to the present invention.

FIG. 2 is a manufacturing state-aware architecture diagram of a typical functional assembly of a radar.

FIG. 3 is a schematic diagram of the basic structure of an RFID system of the radar electronic equipment manufacturing Internet of things system.

FIG. 4 is a functional block diagram of a middleware system of the present invention for manufacturing an IOT system for radar electronics equipment

Fig. 5 is a communication model diagram of a radar electronic equipment manufacturing thing networking heterogeneous gateway of the radar electronic equipment manufacturing thing networking system of the invention.

Fig. 6 is a block diagram of an access module of the radar electronic equipment manufacturing internet of things system of the invention.

Fig. 7 is a structure diagram of a heterogeneous network-based manufactured internet of things gateway communication module of a radar electronic equipment manufactured internet of things system.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention integrates the electronic information technology such as RFID, sensors and the like, the large data level and the manufacturing technology around the manufacturing characteristics of small-batch and multi-variety products of radar electronic equipment, multiple material types, wide process door types, coexistence of manual processing and automatic processing, coexistence of discrete manufacturing of mechanical parts and assembly production line of microwave components, develops the research of the key technology of manufacturing the radar electronic equipment in an internet of things manner, develops a prototype verification system and develops application verification in the development of typical functional components of radar. According to the invention, the key technology of manufacturing the internet of things by the radar electronic equipment is broken through, technical support is provided for functions of online acquisition of the running state of key resources such as logistics execution equipment, detection equipment, knife auxiliary tools and the like, active sensing of a plan execution state, missing part sensing and material matching, material positioning and transmission, quality defect detection and the like in the manufacturing process, the transparency, agility, fault tolerance and self-repairability of the manufacturing execution process of the radar electronic equipment are improved, the purposes of comprehensively tracking, analyzing, optimizing and controlling the manufacturing process are achieved, and a software product and an industry solution for manufacturing the radar electronic equipment are formed by developing a lean management software and hardware platform in the environment of manufacturing the internet of things.

According to the invention, firstly, a radar electronic equipment manufacturing Internet of things system architecture is researched, a technical system of the radar electronic equipment manufacturing Internet of things system architecture is analyzed to form a total technical scheme, as shown in figure 1, and then technical research is gradually developed in five technical levels, wherein the technical research comprises a sensing layer, a transmission layer, a data layer, a standard layer and an application layer. The research of the invention can be carried out by adopting a method of combining theoretical research with application development and experimental verification on the basis of timely understanding and mastering the progress trends of domestic and foreign research works and fully utilizing the existing research works of a subject group.

1.1 technical study scheme of perception layer

The perception layer is the basis, and the technical research content of the level comprises the following steps: the radar electronic equipment manufacturing unit entity perception characteristic analysis and the manufactured Internet of things multi-source information high-reliability acquisition method research. The sensing layer aims to acquire manufacturing resource state information of radar electronic equipment manufacturing equipment, materials, personnel, on-site parts, knife assistive tools and the like through technologies such as an RFID technology, a sensor technology, a laser scanning technology and the like.

There are tens of thousands of materials for radar electronic equipment, including electronic components, assemblies, control elements, electrical equipment, parts, and the like. The shapes, sizes, use environments and other conditions of the materials are different, the single bar code or two-dimensional code technology is difficult to completely compete, and the materials need to be identified by combining RFID. Correspondingly, the RFID reader-writer is adopted to sense the material codes. Meanwhile, the intelligent material storage device needs to be customized, and automatic recording of automatic incoming material acquisition, identification, storage and material taking is realized.

For radar qualitative microwave assemblies or weight-related parts, aiming at the internal manufacturing process of an enterprise, the running state of tracking workshop equipment is collected, and the processing state information of products in process is displayed in real time by using a tray label, station RFID read-write equipment and an electronic billboard, so that the visualization of the process and the tracing record of the product quality are realized. In specific implementation, as shown in fig. 2, an electronic tag is attached to each product in process according to the need, or a tray tag is provided; the production workshop equipment is required to be provided with a sensor respectively, and is provided with an equipment information electronic billboard, a product information electronic billboard and an intelligent node; and an electronic tag reader-writer is configured on each station and corresponds to a product assembly production line.

The perception of the execution state of the workshop production plan needs to perceive various information such as material codes, material consumption conditions, processing states of products in process, yield and the like, and the specific perception environments are different. Therefore, the sensing of such information needs to be realized by RFID, bar code or two-dimensional code. Utilize perception technique to carry out the sign to material, in-process products and personnel to its state change of in time perception, thereby acquire workshop production information such as material code, material consumption condition and in-process products circulation condition. Meanwhile, the information such as product offline and equipment running time can be sensed by using a wireless sensor network. All perception information can be transmitted through a wireless sensing network, so that the perception of workshop production information is more convenient and faster.

And (3) punching a hole in a positioning groove of the knife handle to sense the state of the knife auxiliary tool, and installing an RFID anti-metal tag as an identity card of the knife handle. A touch screen and a handheld RFID reader-writer are arranged beside a tool setting gauge in a machining workshop. The integrated computer is connected with the tool setting gauge and the local area network and is connected with the OTMS system through the workshop local area network. After the parameters of the cutter are measured, the parameters are output to an all-in-one computer, and after the all-in-one computer contacts the RFID chip on the cutter handle through a handheld RFID reader-writer, the matched cutter information and the measurement result of the tool setting gauge in the system are written into the RFID chip of the cutter. The system is connected with a numerical control machine tool system through a network, and meanwhile, the RFID tags on the tool handles respectively acquire corresponding related parameters of the tools in the initial, distribution and use flowing processes, so that the system can track and position the tools conveniently. The system acquires the cutting time of each cutter in a corresponding tool magazine in the ATC of the machine tool through the local area network and the RFID label on the tool handle. An RFID directional telescopic reading head is installed in the tool magazine, information is led into a machine tool through a chip on the identification tool handle, and meanwhile, ATC working information is written into the chip by the machine tool. Therefore, the system can calculate and count the information of the tool service time, the machine tool working time, the tool consumption and the like.

1.2 Transmission layer technical research scheme

The technical research content of the transmission layer comprises: the method supports the technical research of end-to-end manufacturing of the intelligent nodes of the Internet of things, the technical research of RFID middleware for manufacturing the Internet of things, and the technical research of heterogeneous network fusion for manufacturing the Internet of things. The transmission layer aims to realize information communication and interoperation between the collected data and a data center or an application system through a sensing node, middleware, various networks and the like.

In the current manufacturing industry, most industrial sites with concentrated detection points adopt a wired data acquisition mode, namely, most industrial sites adopt a bus mode to feed back to a controller, so that the system has the advantages of rapidness, stability and safety. But the requirement of modern manufacturing industry cannot be met in a plurality of special working occasions by adopting a wired connection mode. For example, a dispersive measurement and control system has high cost for remote line laying and maintenance due to the dispersion compared with a measurement point, and as the acquisition of a sensor signal on a motion member, the signal led out through a cable becomes unreliable or even impossible due to the unfixed spatial position of the sensor. Therefore, wireless data transmission technology is complementary to and even superior to wired data transmission, and plays an important role in modern industries. With the rapid development of RFID technology and wireless sensor network technology in recent years, the data acquisition path is more extensive and flexible. In addition, the field buses are of various types, such as DeviceNet, ControlNet, Interbus, etc., and coexistence of heterogeneous networks is common in modern and future industrial fields.

The invention aims at providing a heterogeneous network fusion transmission technology based on gateway access aiming at common heterogeneous networks in the manufacturing of an Internet of things, and designs an embedded type manufacturing Internet of things gateway. Establishing an integrated management platform facing a heterogeneous sensing equipment group based on a Service-oriented Architecture (Service-oriented Architecture); secondly, aiming at different data acquisition modes (such as serial ports, parallel ports, USB, Bluetooth and the like) and different formats of acquired information of the heterogeneous sensing equipment, establishing corresponding service interfaces to package the sensing function of the heterogeneous sensing equipment and the acquired information format, and realizing that the sensing function of the heterogeneous sensing equipment can be called by adopting a standard mode and sensing events can be output according to a standard information template in the system; and finally, establishing an association model with logic and time sequence relations between different sensing devices and an execution system by adopting a Petri network with time constraint, and further realizing integrated control among the sensing devices, the wireless network and the execution system facing the production execution process based on a wireless communication protocol.

1.3 data layer technical research scheme

The technical research content of the data layer comprises the following steps: the method is used for information fusion and processing technology research oriented to global monitoring and key event detection technology research based on big data drive. The data layer aims to effectively process mass data acquired by manufacturing the Internet of things and detect key event information. And realizing resource scheduling, material distribution and lean workshop management based on the data processing result.

According to the method, data characteristics of the mass data stream of the radar electronic equipment manufacturing internet of things are analyzed, key technologies of mass data stream processing in the manufacturing internet of things environment are deeply researched on the basis of existing research results, and a method for data stream processing and key event efficient detection in the radar electronic equipment manufacturing internet of things environment is provided and designed. Starting from the fusion process, a functional model of multi-source information fusion is established, starting from the composition of information fusion, a structural model of multi-source information is established, and an information fusion algorithm and a comprehensive logic technology are adopted to establish a mathematical model of the multi-source information. And researching and developing three-level technologies of detection level fusion and processing technology, position level fusion and processing technology and target identification level fusion and processing technology according to the level of information abstraction. The information fusion of the production overall control of the Internet of things workshop is realized, so that a more comprehensive, accurate and credible conclusion is obtained.

1.4 application layer technical research scheme

The technical research content of the application layer comprises the following steps: the method comprises the technical research of lean management and intelligent scheduling of manufacturing resources and the technical research of intelligent matching and balanced material flow distribution of materials.

The logistics information such as the state of the material, the position of the material, the material inventory, the position of logistics personnel and the like is obtained in time. On the basis of the material information, a material flow management platform is constructed to help managers to know the material condition, the logistics equipment condition and the logistics personnel condition conveniently and timely, and real-time monitoring and lean management of logistics resources such as materials, material transportation equipment and logistics personnel are achieved. Meanwhile, the logistics management platform can intelligently schedule various logistics resources such as materials, equipment, personnel and the like by means of an intelligent scheduling algorithm, so that the logistics can be intelligently scheduled, and the resource waste is reduced.

Aiming at the transportation scheduling problem frequently encountered in logistics distribution of a discrete manufacturing workshop, a GPS/GIS technology is used for assisting vehicle scheduling and tracking, an RFID/WSN technology is used for carrying out cargo tracking, a GPS/GIS/RFID/WSN-based logistics distribution tracking model is established, the whole vehicle distribution process tracking and data collection are realized, and decision support is provided for compiling and adjusting a distribution plan by a logistics distribution decision scheduling center. On the basis of a workshop logistics equipment tracking model, according to workshop real-time conditions such as a production plan, workshop equipment layout, station distribution, a warehousing system and the working state of distribution equipment, a dynamic workshop logistics equipment scheduling model based on a time window is established to study a corresponding optimization algorithm, shortest paths of materials corresponding to different distribution demands of the workshop logistics equipment are selected, the problems of low-cost vehicle scheduling and scheduling equipment transport capacity maximization under the real-time dynamic condition of a workshop are solved, and therefore rapid, punctual, efficient and low-cost material distribution is achieved; and establishing a workshop logistics scheduling information management platform based on an open dynamic environment, and realizing management of basic data such as distribution equipment tracking, distribution equipment management, distribution personnel organization, distribution route display and the like required by the workshop logistics distribution service.

1.5 Standard layer technical study protocol

The content of the standard layer technical research comprises: the method comprises the technical research of radar electronic equipment manufacture thing connection information safety and the technical research of radar electronic equipment manufacture thing connection standardization. Information security and standardization are fundamental requirements and prerequisites for implementing the manufacture of the internet of things for radar electronic equipment. The invention aims at manufacturing an Internet of things system architecture, researches the safety mechanism of the Internet of things from a perception layer, a transmission layer and an application layer, and makes an information safety plan according to the secret-related degree of different workshops of radar electronic equipment. Aiming at standardization, the invention aims to research the manufacturing Internet of things standardization technology from three aspects of foundation, safety and management and construct a radar electronic equipment manufacturing Internet of things standardization technology system.

2. Key technical solving way

2.1 heterogeneous sensing equipment integration and high-reliability data acquisition technical solution

The invention researches an integrated management technology facing a heterogeneous sensing equipment group, an encapsulation technology for a sensing function of the heterogeneous sensing equipment based on a standard service interface, and an association model between the sensing equipment group and an execution system based on time sequence and logic, and realizes integrated control among the sensing equipment, a wireless network and the execution system based on a wireless communication protocol. And the high-reliability data acquisition technology based on the electronic tag is researched aiming at the problems of reliability, read-write distance and service life of the electronic tag in the environments of electromagnetic interference, metal media, multiple obstacles, vibration and the like.

A typical RFID system is shown in fig. 3, which includes three major parts, an electronic tag, a reader, and middleware and application software. According to different application scenes, the adjustment for matching field requirements is needed to be made at each part. Through the research on the limit theory of the electrically small antenna, a tag performance evaluation model and a test verification environment are constructed to guide the selection of parameters in the tag design process, and the tag design result is evaluated and tested for verification so as to confirm the optimal design scheme. In the design process of the dielectric resonant antenna tag, different types of resonant media are selected, the size and the structural form of the antenna design are optimized, the design result is evaluated by using an evaluation model, and the design scheme is adjusted. And constructing a tag performance evaluation model by researching the energy and data transmission rules between the tag and the reader-writer under the condition of different parameters. The research result directly supports the optimization of the design of the tag and the antenna structure and the packaging process, and obtains a design and manufacturing scheme meeting the requirements of the ultrahigh frequency tag and the reader-writer in the mixed manufacturing environment of the radar electronic equipment.

In addition, through the improvement and optimization of technologies such as electromagnetic induction and radio frequency aggregation, besides the requirement of an ISO radio frequency protocol, a separate high-performance reading head (reader) meeting the field environment is developed, and the method can be used in complex working conditions: metal, non-metal, dust, high temperature, liquid environments where the probe portion of the readhead needs to be accurate and focused and matched to the workpiece label. The reading head is responsible for the collection to on-the-spot label information, adopts wound-rotor antenna and cylindrical circuit to realize the accuracy of probe part, adopts potting resin to realize anti dust, liquid and striking. The sensing design and manufacture applied in the manufacturing field are based on finite element simulation and process experimental research, and the long-distance and short-distance tags which are low in cost, long in service life, small in size, resistant to bending and easy to load on various logistics equipment and meet the requirements of intelligent sensing and identification are developed by changing tag materials, packaging processes, post-processing processes and other means. The specific study experimental methods to be employed are as follows:

by optimizing the parameters of the flip bonding process and adjusting the structural design of the label, the bending strength of the conductive adhesive is improved, and the ultrahigh-flexibility label needing to be bent repeatedly is developed;

the technology is improved to inhibit the moisture absorption of glue, prevent the impact of a chip, weaken the expansion effect of the conductive adhesive caused by thermal expansion and cold contraction, and develop the electronic tag with ultra-long service life;

by optimizing and adjusting the label packaging process, the precision of small chip packaging is improved, and a light, thin and small electronic label is developed.

Through the research on the packaging process of the original bonded electronic tag, the original etched antenna substrate and the traditional metal-resistant principle which simply depends on wave-absorbing materials are not suitable for the application scene of the workpiece electronic tag, so that the electronic tag is developed in a winding antenna mode to achieve small size and interference resistance, and metal resistance is further achieved by adding a magnetic core. The characteristics of dust resistance and liquid resistance are realized through the high-density resin hot melt adhesive, and in addition, the storage capacity and large data volume reading and writing are realized through a Fuji chip.

A field reading head: in the manufacturing process, a field reading head is required to read and write the electronic tag of the workpiece and the electronic tag of the product; through the improvement optimization to technologies such as electromagnetic induction, radio frequency gathering, the development satisfies the disconnect-type high performance reading head of site environment, can be in complicated operating mode: the probe part of the reading head needs to be accurate and gathered and is matched with a workpiece label, the accuracy of the probe part is realized by adopting a wound antenna and a cylindrical circuit, and the dust, liquid and impact resistance is realized by adopting potting resin.

Moving the reading head: in industrial environment applications requiring a lot of semi-automatic processes such as measurement processes, inventory processes on the basis of field readheads, in view of the application requirements, there is a need to develop portable readheads, which are easy to handle by hand and provide button triggering, with similar functionality requirements as field readheads.

Distributed intelligent reading head: in the manufacturing link, processing and control are required between the reading head and the middleware, particularly the adjustment of reading and writing instructions and signal power, the integration of a plurality of reading heads can be realized, the networking of serial ports and TCP/IP networking can be realized, I/O input and output are realized, and in addition, the requirements on IP protection level, dust prevention, water prevention and static prevention are met.

2.2 RFID-based end-to-end information interaction and middleware technical solution

The end-to-end information interaction is one of the foundations of manufacturing an internet of things, generally refers to all technologies and means for establishing connection between people and machines, and aims to organically combine different types of communication technologies such as communication between machines, machine control communication, man-machine interaction communication, mobile internet communication and the like through the communication technology. Traditional sensors, such as machine vision, RFID, etc., can only be used in automated equipment alone, but all need to be equipped with other auxiliary devices, such as data transmission terminals, PLC logic units, industrial personal computers, data analysis and algorithm units, etc. Under the environment of manufacturing the internet of things, the coordination and linkage of various sensing data are one of core functions and are also technical difficulties and key points. The mode of deploying a large number of back-end cooperative devices for a single sensor has not been able to adapt to the sensing data requirements of the new intelligent manufacturing. Based on the core requirement, an end-to-end intelligent node technology capable of realizing information interaction and correlation operation between manufactured Internet of things objects needs to be researched, and a sensing fusion processing analysis and interaction interface is realized.

The RFID middleware can solve the problem of information exchange between the bottom layer data read-write and the upper layer application program, and has become a hot spot of current research as a key technology for implementing manufacturing of an internet of things. The essential role of the RFID middleware is connection, and the value lies in the transfer of semantics. Therefore, the invention aims to analyze the realization function, the hierarchical structure and the semantic composition of the RFID middleware framework and provides the middleware technology and the solution for realizing the manufacture of the Internet of things of the radar electronic equipment.

The middleware product software architecture is shown in fig. 4. The system comprises three modules of an edge agent, a network management module and an event management module, wherein the three modules are downwards connected with hardware modules such as a label reader-writer, a sensor, a controller, a visual unit and the like on a workshop site, and upwards butted with an application program of a workshop/enterprise level through an application interface to form a channel for uploading and issuing data.

The edge proxy functions as a bridge and a link, and comprises the following functions: allowing different kinds of reader/sensors to write to the adapter; collecting electronic tag coded data from a reader-writer in a standard format; the internal message queue is realized, and event buffering is carried out between the data filtering and collecting device and the adapter, so that the data filtering and collecting device and the adapter can operate under the condition of no mutual interference, and high-efficiency communication is realized; and a large amount of redundant data is removed, the information amount is rapidly reduced, and only the data meeting the rules are reserved and summarized to the event server.

The network management includes the following functions: providing monitoring, configuration and management of the reader/writer/sensor; the method supports simultaneous access to a plurality of readers and basic configuration and management of different readers; providing configuration management of self parameters of the middleware and the like; providing an abnormal alarm and error recovery; providing security management; and an extensible mechanism is provided, and software upgrading and the use of a novel reader/writer/sensor are supported.

Event management provides a uniform interface to upper layer applications as defined in the specification, including rule definitions, event subscriptions, and the like. A set of Application Programming Interfaces (APIs) with comprehensive functions are provided to realize an open API interface for an application layer, and the API interface comprises an information inquiry interface (reader/sensor equipment information, edge control node equipment information, label printing task information and the like) and a control interface (reader read-write command, edge sensing node, equipment IO command, label printing command and the like).

2.3 solution of radar electronic equipment manufacturing Internet of things heterogeneous network fusion technology

The real-time data transmission is the key of the radar electronic equipment manufacturing internet of things platform, but the radar electronic equipment manufacturing internet of things has various networks, such as RFID, WSN and various bus networks, and the real-time data transmission is the key for ensuring the real-time data transmission for the interconnection and intercommunication of the sensing network.

The current sensing network convergence access technologies are various, and from the perspective of protocol finding, the current sensing network convergence access technologies can be roughly divided into three main types, namely a gateway access technology, a coverage access technology and a wireless Mesh network access technology. The gateway access technology has the advantages that the sensing network can use respective communication protocols, flexibly adopts a software and hardware access mechanism, coordinates different network resources and is flexibly arranged in a complex application scene. The overlay access technique is implemented by two strategies: the first is to overlay the sensing network protocol with TCP/IP protocol, which makes the traditional internet directly accessible to the sensing node, such as the application of 6 LoWPAN. The second is that the aware network protocol covers the TCP/IP protocol, and this strategy is to deploy different aware network protocols on the devices of the IP network, but this implementation is not practical due to the diversity of heterogeneous networks. The wireless Mesh network technology is an innovative introduction on a network structure, the connection between access points of the wireless Mesh network technology adopts a Mesh structure, no central point exists, the status between nodes is completely equal, and the structure greatly enhances the expandability of the network. The utilization of the peer-to-peer communication concept can improve the universality of network access, but because each network layer protocol is opaque in a heterogeneous complex perception environment, the realization difficulty is higher. The method comprehensively considers the advantages and the disadvantages of all schemes, and the subject adopts a gateway fusion technology as a radar electronic equipment to manufacture an Internet of things heterogeneous network fusion scheme.

On the basis of analyzing heterogeneous network protocols such as DeviceNet protocol, ControlNet protocol, Interbus protocol, Zigbee/GLoWPAN protocol and the like, a communication model of the thing networking heterogeneous gateway manufactured by radar electronic equipment is established, and is divided into an access module, a communication module and a management module as shown in FIG. 5.

(1) Access module

The access module provides access interfaces for various heterogeneous networks, namely DeviceNet, ControlNet, Interbus network, WSN network and Ethernet. As shown in fig. 6, the processor of the manufacturer internet of things gateway is ARM Cortex A8, and there are 5 interface modules, which are an RF wireless radio frequency interface module, a ControlNet interface module, a DeviceNet interface module, an Interbus interface module and an Ethernet interface module of Zigbee/6LoWPAN, respectively.

(2) Communication module

The sensing network of the Internet of things has various heterogeneous networks, and the heterogeneous networks not only need to be interactively communicated to provide real-time data interaction, but also need to be accessed into Ethernet or Internet. The previous subsection analyzes protocols in various heterogeneous networks, and in order to implement interconnection and intercommunication of heterogeneous networks, it is necessary to extract an effective data segment in a data packet, and quickly convert the effective data segment into another network protocol, and encapsulate the effective data segment into a required data packet. Therefore, a heterogeneous network based manufactured internet of things gateway communication module is proposed herein on the basis of a manufactured internet of things gateway in combination with a network protocol translation technology (NAT), as shown in fig. 7. The framework can rapidly switch data packets among DeviceNet, ControlNet, Interbus and Zigbee/6LoWPAN network protocols, can convert the data packets into a TCP/IP protocol, and sends the data to an upper application for analysis and processing.

(3) Management module

The management module is a service module of the system and is used for network access registration and network logout of each terminal node in the heterogeneous network, dynamic scheduling and visual management of multi-gateway load balancing. The system comprises 3 parts, namely terminal management, multi-gateway load management and visual management.

2.4 solution to the technology of processing Internet of things data stream and detecting key events

In a manufacturing internet of things environment, due to the complexity of the manufacturing process, a large number of sensing devices are deployed to the manufacturing site to monitor the production situation, resulting in a large volume of manufacturing data streams. However, due to these generating massive manufacturing data streams, the following characteristics exist: the method has the advantages that due to the huge data capacity, multi-source data content, complex data structures, large data out-of-order arrangement, strong uncertain data values, diversified data representation forms, small-value data information values, high response requirements and the like, the existing massive data stream processing method is difficult to directly support the complete processing of the massive manufacturing data stream, so that the existing enterprises are difficult to directly obtain the required information from the generated massive information stream, and the production management and control level of the enterprises are seriously influenced. To this end, research has been conducted on manufacturing-related data stream processing and key event detection techniques.

In the manufacturing internet of things environment, due to the large-scale manufacturing process, the regional production distribution and the complexity of the process, a large amount of sensing equipment such as RFID tags and sensor nodes are widely deployed to a manufacturing field, and a large amount of data about people, materials, equipment, production processes, products, services, environment changes and the like in the manufacturing process are generated. Because the manufacturing data has data characteristics of large capacity, multiple sources, quick response and demand and the like, the existing mass data processing method is difficult to support the quick processing requirement of the mass data, and an enterprise cannot directly obtain required information from various mass information streams, so that the enterprise is hindered from mastering the states of various manufacturing processes in production in real time, and the production management and control level of the enterprise is influenced. Therefore, how to quickly detect information required by an enterprise from the massive multi-source data streams generated in the manufacturing internet of things environment provides a basis for enterprise production decisions, ensures the safe and orderly implementation of enterprise manufacturing and production, and becomes an important issue for current enterprise attention.

As an SASE method, which is the most widely used method for detecting a complex event in a mass data stream at present, a fast detection function of a predetermined event sequence on a mass multi-source data stream is realized mainly by using a mode of combining a Finite Automaton (NFA non-iterative Finite endpoint Automation) and a main Instance Stack (AISAS active Stack), and the method is an excellent method for detecting a mass data stream at present and is also called as an NFA + AIS method. However, in the SASE method, an AIS structure is used to store a large number of detected intermediate results in the detection process, so that a large number of backtracking and repeated examination finding operations exist, and the problem that the detection is difficult to process in time is caused. Therefore, the subject provides a complex event detection method for manufacturing a hash table storage structure of an internet of things mass multi-source data stream. The hash table structure is used for replacing an AIS structure in an SASE method to store and detect a mass intermediate result in the detection process of a mass multi-source data stream, and technologies such as hash table mapping, searching and inserting are utilized, so that the problem that the existing AIS structure-based complex event detection method is difficult to process in time due to a large amount of backtracking and repeated searching operations when detecting mass multi-source data can be solved, and a novel method is provided for solving the problem of efficient detection of mass multi-source data streams of manufactured Internet of things. The complex event detection capability on the massive multi-source data streams can be greatly improved.

The technical method for processing the data stream of the radar electronic equipment manufacture in the Internet of things and detecting the key events mainly comprises the following steps: the method comprises four functions of reading an atomic event, NFA matching, hash table storage and hash table lookup.

Read atomic event: reading atomic event operation from a mass multi-source data stream generated in a manufacturing Internet of things environment; NFA matching: matching the read mass atomic events by using a non-deterministic Finite Automaton (NFA) to obtain related atomic events;

and (4) hash table storage: storing the detected massive related atomic events, namely intermediate results, by using technologies such as Hash table structure table mapping, inserting and the like;

and (3) Hash table lookup and output: and searching a related event sequence by utilizing a hash table checking technology and outputting the related event sequence, namely the complex event. The detection principle of the complex event detection method for manufacturing the hash structure of the mass multi-source data stream of the Internet of things is as follows: after NFA is used for matching relevant atomic events from a mass multi-source atomic event stream, HTS (Hash Table Structure) is used for storing the detected relevant mass atomic events, and when the detection is finished, a Hash Table lookup technology is used for searching and outputting a relevant event sequence, namely a complex event. The method is also called NFA-HTS method for short, and the detection method can be divided into the following steps:

A. calculating the length of a given pattern matching expression, generating a corresponding NFA according to the given pattern matching expression, creating a new Hash table and carrying out initialization operation;

B. reading an atomic event operation from the atomic event stream;

C. judging whether the atomic event is received by NFA; if receiving, turning to step D, otherwise, turning to step B;

D. mapping the atomic event to a corresponding array by utilizing a hash table function, judging whether the array has the item or not, if not, adding a main chain node (comprising the atomic event type and the atomic minimum timestamp and a counter) of the atomic type at the corresponding position of the array, inserting a sub chain node (comprising the atomic event type and the atomic occurrence timestamp) of the atomic type into the main chain node, updating the minimum timestamp in the main chain node as the minimum timestamp of the atomic event occurrence, and adding 1 to the counter value in the main chain node; if the child chain node exists, inserting a child chain node of the atom type into the node on the child chain, and adding 1 to the counter value in the main chain node;

E. judging whether the counter value is equal to the length of the given pattern matching expression or not, if not, turning to the step B; if yes, turning to the step F;

F. and C, judging the minimum time stamp + TW (sliding window time) > of the atomic event occurrence on the sub-bond, if so, outputting the relevant atomic event by utilizing a hash table lookup technology to obtain a detection result, and otherwise, turning to the step B.

In summary, the present invention solves the following technical problems:

1. the method comprises the acquisition technology and the management and control means of multi-source heterogeneous data in a complex manufacturing environment. The method mainly solves the problems that in a manufacturing workshop of radar electronic equipment, complex environments such as oil stain, metal, corrosion, noise and the like exist in associated equipment, operation objects and surrounding environments in the manufacturing process, the reliability and the real-time performance of data acquisition are greatly influenced, the information of the manufacturing process is sensed completely and accurately, and the method is a foundation for realizing workshop manufacturing physical association. Therefore, a data acquisition technology and a data acquisition method for breaking through key resource elements of a workshop are needed, and the data acquisition and visual control in the production process of products in process, the full life cycle data acquisition and control of knife and assistive devices, the tracking and control of logistics execution processes, the quality data acquisition and control, the positioning and state identification of key equipment and the like are included.

2. The radar electronic equipment manufacturing shop is connected in a man-machine-material-method-ring mode. The method mainly aims to realize electronic unified identification, collection and tracking of information such as field equipment states, material states, technical states and the like by taking a production operation plan as a main line and based on an electronic tag technology of a technological process, realizes interconnection of plan management, logistics management and technological information, and supports integrated operation of the production process.

3. And the radar electronic equipment manufacturing resource is managed in a lean mode and is intelligently scheduled. The radar electronic equipment manufacturing internet of things system is mainly used for timely knowing various information such as the running state, material demands, material inventory and transport equipment positions of key resources, carrying out lean management and intelligent scheduling on material transport equipment, personnel and materials and achieving material distribution equalization.

The foregoing is a detailed description of the invention with reference to specific embodiments, and the practice of the invention is not to be construed as limited thereto. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention, and it is intended to cover all such modifications and changes as fall within the true scope of the invention as defined by the appended claims.

Claims (8)

1. A radar electronic equipment manufacture thing allies oneself with system which characterized in that: the system comprises a sensing layer, a transmission layer, a data layer, an application layer and a standard layer; the sensing layer is a foundation and is used for receiving manufacturing resource state information required by manufacturing of radar electronic equipment; the transmission layer realizes information communication and interoperation between the acquired data of the sensing layer and a data center of the data layer or between the acquired data of the sensing layer and an application system of the application layer; the data layer effectively processes mass data acquired by manufacturing the Internet of things, detects key event information, and realizes resource scheduling, material distribution and workshop lean management based on a data processing result; the application layer realizes the lean management and intelligent scheduling of manufacturing resources, and the intelligent matching and balanced logistics distribution of materials; the standard layer realizes the information safety of the radar electronic equipment manufacturing Internet of things and the standardization of the radar electronic equipment manufacturing Internet of things;

the transmission layer realizes information communication and interoperation between the acquired data of the sensing layer and a data center of the data layer or between the acquired data of the sensing layer and an application system of the application layer through a heterogeneous network or a combination of a sensing node and the heterogeneous network or a combination of a middleware and the heterogeneous network or a combination of the sensing node, the middleware and the heterogeneous network;

the heterogeneous network framework comprises an access module, a communication module and a management module; the access module provides access interfaces for various heterogeneous networks, namely a DeviceNet, a ControlNet, an Interbus network, a WSN network and an Ethernet; the communication module realizes interconnection and intercommunication of heterogeneous networks, extracts effective data segments in a data packet, quickly converts the effective data segments into another network protocol, and encapsulates the effective data segments into a required data packet; the management module is a service module of the system, is used for network access registration and network logout of each terminal node in the heterogeneous network, dynamic scheduling and visual management of multi-gateway load balancing, and comprises 3 parts which are respectively terminal management, multi-gateway load management and visual management.

2. The radar electronics equipment manufacturing internet of things system of claim 1, wherein: the sensing layer acquires the manufacturing resource state information of equipment, materials, personnel, workpieces and knives and assistive tools manufactured by the radar electronic equipment through at least one of RFID, a sensor and laser scanning.

3. The radar electronics equipment manufacturing internet of things system of claim 1, wherein: the sensing node comprises a field reading head.

4. The radar electronics equipment manufacturing internet of things system of claim 1, wherein: the sensing node comprises a moving read head.

5. The radar electronics equipment manufacturing internet of things system of claim 1, wherein: the sensing node comprises a distributed intelligent reading head.

6. The radar electronics equipment manufacturing internet of things system of claim 1, wherein: the middleware framework comprises an edge agent module, a network management module and an event management module, the middleware is downwards connected with hardware modules such as a label reader-writer, a sensor, a controller and a visual unit on a workshop site, and upwards butted with an application program of a workshop/enterprise level through an application interface to form a channel for uploading and issuing data.

7. The radar electronics equipment manufacturing internet of things system of claim 1, wherein: the application layer constructs a material flow management platform through timely acquiring logistics information such as the state of a material, the position of the material, material inventory and the position of logistics personnel, helps managers to timely and conveniently know the material condition, the logistics equipment condition and the logistics personnel condition on the basis of the material information, and realizes real-time monitoring and lean management of material, material transportation equipment and logistics resources of the logistics personnel.

8. The radar electronics equipment manufacturing internet of things system of claim 1, wherein: the method for processing the data stream of the manufacture of the radar electronic equipment and detecting the key event mainly comprises the following steps:

read atomic event: reading atomic event operation from a mass multi-source data stream generated in a manufacturing Internet of things environment;

NFA matching: matching the read mass atomic events by using a non-deterministic finite automaton to obtain related atomic events;

and (4) hash table storage: mapping by using a hash table structure table, and storing the acquired massive related atomic events, namely intermediate results by using an insertion technology;

and (3) Hash table lookup and output: and searching a related event sequence by utilizing a hash table checking technology and outputting the related event sequence, namely the complex event.

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