CN103454999A - System and method for remotely monitoring tobacco sheet production line - Google Patents
System and method for remotely monitoring tobacco sheet production line Download PDFInfo
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- CN103454999A CN103454999A CN2013103742066A CN201310374206A CN103454999A CN 103454999 A CN103454999 A CN 103454999A CN 2013103742066 A CN2013103742066 A CN 2013103742066A CN 201310374206 A CN201310374206 A CN 201310374206A CN 103454999 A CN103454999 A CN 103454999A
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Abstract
The invention discloses a system and method for remotely monitoring a tobacco sheet production line. The system comprises a data monitoring layer, a data transmission layer and a data collecting layer. The data monitoring layer and the data transmission layer are in bidirectional communication. The data transmission layer and the data collecting layer are in bidirectional communication. The data monitoring layer comprises a server. The server is respectively connected with a warning device, a printer and a UPS. The data transmission layer comprises a GPRS main module. The GPRS main module is communicated with an air compression station GPRS auxiliary module and a heat supply station GPRS auxiliary module in two directions. The GPRS main module is further communicated with the server in two directions. The data collecting layer comprises an AD data collector, a serial port collector, a current sensor, a pressure sensor, a temperature sensor and a flow totalizer. The system for remotely monitoring the tobacco sheet production line has the advantages of being low in maintenance cost, high in reliability, reasonable in expense and the like.
Description
Technical field
The present invention relates to long distance control system and the method for supervising of tobacco sheet production line.
Background technology
With universal, efficiently monitor in real time and control remote site along with the development of modern network technology, mobile communication technology, control technology, become the trend of current industrial rig-site utilization.And disperse in order to overcome geographic position, the restriction such as grade that wiring cost is high, increasing supervisory system adopts the GPRS wireless communication technology, Site Detection point unattended to some, that disperse carries out real-time data acquisition, grasp in time on-the-spot situation, and data are uploaded to central control room by GPRS network carry out remote detection and centralized control.Native system adopts this technology, and has carried out concrete hardware and software engineering design exploitation.In order to realize communicating by letter of Surveillance center and substation, system has adopted the stipulations based on Modbus communication protocol and has developed corresponding coding and decoding program.Surveillance center adopts VB6.0 to write the data transmit-receive server program, and friendly man-machine interface, monitors in real time each station data and to the file record of data.
For geographic position dispersion and remote relatively, the industrial production system that needs again monitoring, if arrange that by setting up crane span structure or cable ditch cable realizes remote monitoring, on the one hand due to distant and dispersion, wiring cost is higher, and the cable of laying may be subject to the interference of other surrounding environment.Take full advantage of GPRS net wide coverage, high reliability, Long-Distance Monitoring System About based on GPRS, geographic position dispersion, the high restriction of wiring cost have been overcome, there is the advantages such as maintenance cost is low, reliability is high, expense is reasonable, be conducive to the Site Detection point of unmanned, dispersion is carried out to real-time data acquisition and centralized control.
Summary of the invention
Purpose of the present invention is exactly in order to address the above problem, and a kind of long distance control system and method for supervising of tobacco sheet production line is provided, and it has the advantages such as maintenance cost is low, reliability is high, expense is reasonable.
To achieve these goals, the present invention adopts following technical scheme:
The long distance control system of tobacco sheet production line comprises:
Data collection layer, the inquiry instruction of being responsible for issuing according to the data monitoring layer gathers flux cumulating value, force value, the temperature correlation data of Air Pressure Station, current data and the heating plant of tobacco sheet production line, and data are uploaded to the data monitoring layer by data transfer layer;
Data transfer layer, the data transmission of being responsible for data collection layer is collected is to the data monitoring layer, simultaneously to the inquiry command of the data monitoring layer that receives to data collection layer;
The data monitoring layer, be responsible for to receive the data that data transfer layer transmits, and then adopts the data collision disposal route to the data processing that conflicts, and the data result is monitored, printed or reports to the police, and to data collection layer, issues the inquiry instruction.
Described data monitoring layer comprises server, and described server is connected with warning device, printer and ups power respectively;
Described server, for realize the Distant supervision and control of system by the system display interface, can realize that the WEB of data shares simultaneously, facilitates managerial personnel to realize telemanagement, data query;
Described ups power, for server provides stable electric energy, prevents the impact of accident power-off on system and main frame;
Daily sheet, month form of described printer for printing statistics;
Described warning device comprises alarm lamp, stereo set and sends to by SMS on responsible official's on duty mobile phone.
Described data transfer layer comprises the GPRS primary module, and the compressed air station GPRS of described GPRS primary module and tobacco sheet production line is from the heating plant GPRS of module and tobacco sheet production line from the module two-way communication, described GPRS primary module also with described server two-way communication.
Described GPRS primary module is for after receiving the data inquiry instruction of server, and the inquiry instruction is sent to the compressed air station of tobacco sheet production line and heating plant GPRS from module by GPRS network; Receive the compressed air station of tobacco sheet production line and the monitor data that heating plant GPRS transmits from module, and send the data of reception to server by RS232 and processed and store;
Described compressed air station GPRS is from module when receiving inquiry instruction that the GPRS primary module transmits and address corresponding to this instruction and be the address of compressed air station module by GPRS network, compressed air station GPRS is transferred to the GPRS primary module to the pressure signal of compressed air station water pump electric current, total current and the air compressor delivery air stored in data storage areas by GPRS network from module;
When described heating plant GPRS is the address of heating plant module from module for the inquiry instruction when receive GPRS primary module transmission by GPRS network and address corresponding to this instruction, heating plant GPRS is transferred to the GPRS primary module to the flux cumulating value of the heating plant hot gas of storing in data storage areas, temperature and pressure by GPRS network from module.
Described data collection layer comprises AD data acquisition unit and serial ports collector, described AD data acquisition unit and compressed air station GPRS are from the module two-way communication, described serial ports collector and heating plant GPRS are from the module two-way communication, described AD data acquisition unit also gathers the simulating signal of some current sensors, pressure transducer, described serial ports collector also gathers flow integrator information, and described flow integrator also receives the information from flowmeter, pressure transducer, temperature sensor;
Described AD data acquisition unit is converted to digital quantity signal for the 4-20mA analog signals that current sensor and pressure transducer are transmitted, and then single-chip microcomputer is converted to MODBUS agreement RTU form by data, export to compressed air station GPRS from module by RS485, data are temporarily stored in GPRS module buffer zone;
Described serial ports collector is used for auditing the communication data between flow integrator and the GPRS of cogeneration plant module, and data is converted to the MODBUS agreement RTU form of standard, then by RS485, is transferred to heating plant GPRS from module; This audits process does not affect communicating by letter between flow integrator and the GPRS of cogeneration plant module.
Described current sensor, by the size of current of mutual inductance principle induction line, adopts the output of two-wire system connection, the current signal of 4-20mA;
Described pressure transducer, for detection of the pressure of air compressor output squeezing air and the pressure of heating plant gas pipe line hot gas, adopts the two-wire system connection, the current signal of output 4-20mA;
Described temperature sensor, for detection of the hot air temperature value of carrying from cogeneration plant, adopts the two-wire system connection, output 4-20mA current signal.
Described flowmeter by the instantaneous delivery of pipeline, adopts the two-wire system connection for detection of the hot gas of carrying from cogeneration plant, and the current signal of output 4-20mA is to flow integrator;
Described flow integrator will be for gathering from flowmeter instantaneous delivery, temperature sensing actuator temperature, the pressure transducer pressure signal of gas pipe line collection, and according to certain algorithm, instantaneous delivery is added up to the flux cumulating value as pipeline, and flux cumulating value, force value, temperature information are transferred to the GPRS module.
The method for supervising of the long distance control system of described tobacco sheet production line, mainly comprise the steps:
Step (1): start; The data monitoring layer adopts the first data collision disposal route to send the inquiry instruction to compressed air station, the heating plant of tobacco sheet production line respectively by the GPRS primary module;
Step (2): the compressed air station of tobacco sheet production line, heating plant GPRS receive the inquiry instruction from module, and send the inquiry instruction to data collection layer;
Step (3): data collection layer receives the inquiry instruction, confirms after errorless with the MODBUS protocol format, to send to GPRS from module the data of collection;
Step (4): the compressed air station of tobacco sheet production line, heating plant GPRS are transferred to GPRS primary module by the data acquisition layer data received by GPRS network from module;
Step (5): the GPRS primary module sends to the data monitoring layer to carry out the second data collision processing and Data Format Transform, storage demonstration the data that receive; Finish.
The concrete steps of described step (1) are as follows:
Step (1-1): start; Communications parameter arranges, and described parameter comprises baud rate or PORT COM;
Step (1-2): judge whether PORT COM is opened, if just enter step (1-3); Be exactly that serial communication is invalid if not, return to step (1-2);
Step (1-3): timer adds 0.5 second; Judge that whether timer is by 5 seconds, if just enter step (1-4), just enter if not step (1-5);
Step (1-4): judge that whether timer is by 10 seconds, if step (1-3) is returned in zero clearing with regard to timer; Just enter if not step (1-6);
Step (1-5): arrange and receive 25 bytes, produce the OnCom event, to compressed air station GPRS module, send data inquiry instruction; Determine whether compressed air station inquiry instruction according to the station period; If so, compressed air station sends the compressed air station data to the GPRS primary module; Just return to if not step (1-3);
Step (1-6): 51 the bytes generation OnCom events that receive are set, send data inquiry instruction to heating plant GPRS module, determine whether heating plant inquiry instruction according to the station period, if, heating plant sends the heating plant data and finishes to the GPRS primary module, just returns to if not step (1-3).
The concrete steps of described step (5) are:
Step (5-1): to the GPRS primary module, send the compressed air station data;
Step (5-2): the GPRS primary module receives data and puts into buffer zone;
Step (5-3): whether data the first two byte that judgement receives is markup character, if just enter step (5-4); Just by the rejection of data of buffer zone, empty buffer zone if not, and enter step (5-2);
Step (5-4): receive whether the data station period is compressed air station, if just enter step (5-5); Just enter if not step (5-6);
Step (5-5): whether the byte length that judgement receives data is 12, if just data are extracted and the translation data form, store in database, and enter step (5-7), just by the rejection of data of buffer zone, empty buffer zone and enter step (5-2) if not;
Step (5-6): judgement receives whether the data station period is heating plant, if just enter step (5-8), if not, just by the rejection of data of buffer zone, empties buffer zone and returns to step (5-2);
Step (5-7): judgement receives data and whether exceeds early warning range, if just by warning lamp, stereo set and SMS, remind monitor staff's compressed air station data exception, enters step (5-10), if not, just directly enters step (5-10);
Step (5-8): whether the byte length that judgement receives data is 40, if just data are extracted and the translation data form, stores in database, enters step (5-9), just by the rejection of data of buffer zone, empties buffer zone if not; Return to step (5-2);
Step (5-9): judgement receives data and whether exceeds early warning range, if just by pilot lamp, stereo set and SMS, remind monitor staff's compressed air station data exception, enters step (5-10); If not, just directly enter step (5-10);
Step (5-10): calling data storehouse heating plant and compressed air station data are presented at host computer, finish.
Beneficial effect of the present invention:
1 has overcome geographic position dispersion, the high restriction of wiring cost, has the advantages such as maintenance cost is low, reliability is high, expense is reasonable, is conducive to the Site Detection point of unmanned, dispersion is carried out to real-time data acquisition and centralized control.
2 system real-time onlines, automatically make a copy of the data of tobacco sheet production line compressed air station and heating plant, the various forms such as the pressure of treated generation order of classes or grades at school, day, month compressed air station total current, water pump electric current, air compressor output squeezing air and the flux cumulating value of heating plant hot gas, order of classes or grades at school hot gas use amount, temperature, pressure.
The ruuning situation of the 3 pairs of tobacco sheet production line compressed air stations and heating plant is carried out Real-Time Monitoring, can set up bound on their own, when can report to the police timely appears when abnormal in total current, water pump electric current, compressed air pressure and heating plant temperature, the pressure and other parameters of compressed air station, the tinkle of bells that can give the alarm by the alarm device of Surveillance center on the one hand, light the alarm pilot lamp; Also alarm signal can be sent on managerial personnel's mobile phone on the other hand.
4 systems adopt modular design, and transfer rate is fast, and antijamming capability is strong, conveniently realizes the expansion of module simultaneously, are convenient to safeguard.
5 system servers support WEB to share, and facilitate managerial personnel realize management, inquiry and safeguard by INTERNET.The accompanying drawing explanation
Fig. 1 is system structural framework figure;
Fig. 2 is the entire system process flow diagram;
Fig. 3 sends the flow process of conflict for processing the inquiry instruction;
Fig. 4 is that the data monitoring layer is processed the flow process that receives data.
Wherein, 1, warning device, 2, ups power, 3, server, 4, printer, 5, the GPRS primary module, 6, compressed air station GPRS is from module, and 7, heating plant GPRS is from module, 8, the AD data acquisition unit, 9, current sensor, 10, pressure transducer, 11, the serial ports collector, 12, flow integrator, 13, flowmeter, 14, temperature sensor.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, the long distance control system of tobacco sheet production line, mainly comprise data monitoring layer, data transfer layer and data collection layer; Described data monitoring layer and data transfer layer two-way communication, described data transfer layer and data collection layer two-way communication;
Described data monitoring layer comprises server 3, and described server 3 is connected with warning device 1, printer 4 and ups power 2 respectively;
Described server, for realize the Distant supervision and control of system by the system display interface, can realize that the WEB of data shares simultaneously, facilitates managerial personnel to realize telemanagement, data query.
Described ups power 2, for server 3 provides stable electric energy, prevents the impact of accident power-off on system and main frame;
Daily sheet, month form of described printer 4 for printing statistics;
Described warning device 1 comprises alarm lamp, stereo set and sends to by SMS on responsible official's on duty mobile phone.
Described data transfer layer comprises GPRS primary module 5, and described GPRS primary module 5 and compressed air station GPRS be from module 6 and heating plant GPRS from module 7 two-way communications, described GPRS primary module 5 also with described server 3 two-way communications;
Described GPRS primary module 5 for the data inquiry instruction that receives server after, the inquiry instruction is sent to the compressed air station of tobacco sheet production line and heating plant GPRS from module by GPRS network; Receive the compressed air station of tobacco sheet production line and the monitor data that heating plant GPRS transmits from module, and send the data of reception to server by RS232 and processed and store.
Described compressed air station GPRS is from module 6 for when receiving inquiry instruction that the GPRS primary module transmits and address corresponding to this instruction and be the address of compressed air station module by GPRS network, compressed air station GPRS is transferred to the GPRS primary module to the pressure signal of compressed air station water pump electric current, total current and the air compressor delivery air stored in data storage areas by GPRS network from module.
Described heating plant GPRS is from module 7 for when receiving inquiry instruction that the GPRS primary module transmits and address corresponding to this instruction and be the address of heating plant module by GPRS network, heating plant GPRS is transferred to the GPRS primary module to the flux cumulating value of the heating plant hot gas of storing in data storage areas, temperature and pressure by GPRS network from module.
Described data collection layer comprises AD data acquisition unit 8 and serial ports collector 11, described AD data acquisition unit 8 and compressed air station GPRS are from module 6 two-way communications, described serial ports collector 11 and heating plant GPRS are from module 7 two-way communications, described AD data acquisition unit 8 also gathers the analog signals of some current sensors 9, pressure transducer 10, described serial ports collector 11 also gathers flow integrator 12 information, and described flow integrator 12 also receives the information from flowmeter 13, pressure transducer 10, temperature sensor 14.
Described AD data acquisition unit 8 is converted to digital quantity signal for the 4-20mA analog signals that current sensor and pressure transducer are transmitted, and then single-chip microcomputer is converted to MODBUS agreement RTU form by data, export to compressed air station GPRS from module by RS485, data are temporarily stored in GPRS module buffer zone.
Described serial ports collector 11 is for auditing the communication data between flow integrator and the GPRS of cogeneration plant module, and data is converted to the MODBUS agreement RTU form of standard, then by RS485, is transferred to heating plant GPRS from module.This audits process does not affect communicating by letter between flow integrator and the GPRS of cogeneration plant module.
Described current sensor 9, by the size of current of mutual inductance principle induction line, adopts the output of two-wire system connection, the current signal of 4-20mA.
Described pressure transducer 10, for detection of the pressure of air compressor output squeezing air and the pressure of heating plant gas pipe line hot gas, adopts the two-wire system connection, the current signal of output 4-20mA.
Described flowmeter 13 by the instantaneous delivery of pipeline, adopts the two-wire system connection for detection of the hot gas of carrying from cogeneration plant, and the current signal of output 4-20mA is to flow integrator.
Described flow integrator 12 will be for gathering from flowmeter instantaneous delivery, temperature sensing actuator temperature, the pressure transducer pressure signal of gas pipe line collection, and according to certain algorithm, instantaneous delivery is added up to the flux cumulating value as pipeline, and by communications such as flux cumulating value, force value, temperature to the GPRS module.
As shown in Figure 2, the method for supervising of the long distance control system of tobacco sheet production line, mainly comprise the steps:
Step (1): start; The data monitoring layer sends the inquiry instruction by GPRS primary module 5 to compressed air station, heating plant;
Step (2): compressed air station, heating plant GPRS receive the inquiry instruction from module 7, and send the inquiry instruction to data collection layer;
Step (3): data collection layer receives the inquiry instruction, confirms after errorless with the MODBUS protocol format, to send to GPRS from module the data of collection;
Step (4): compressed air station, heating plant GPRS are transferred to GPRS primary module 5 by the data acquisition layer data received by GPRS network from module 7;
Step (5): GPRS primary module 5 sends to the data monitoring layer processed, store and show the data that receive; Finish.
As shown in Figure 3, the concrete steps of described step (1) are as follows:
Step (1-1): start; Communications parameter arranges, and described parameter comprises baud rate or PORT COM;
Step (1-2): judge whether PORT COM is opened, if just enter step (1-3); Be exactly that serial communication is invalid if not, return to step (1-2);
Step (1-3): timer adds 0.5 second; Judge that whether timer is by 5 seconds, if just enter step (1-4), just enter if not step (1-5);
Step (1-4): judge that whether timer is by 10 seconds, if step (1-3) is returned in zero clearing with regard to timer; Just enter if not step (1-6);
Step (1-5): arrange and receive 25 bytes, produce the OnCom event, to compressed air station GPRS module, send data inquiry instruction; Determine whether compressed air station inquiry instruction according to the station period; If so, compressed air station sends the compressed air station data to GPRS primary module 5; Just return to if not step (1-3);
Step (1-6): 51 the bytes generation OnCom events that receive are set, send data inquiry instruction to heating plant GPRS module, determine whether heating plant inquiry instruction according to the station period, if, heating plant sends the heating plant data and finishes to GPRS primary module 5, just returns to if not step (1-3).
As shown in Figure 4, the concrete steps of described step (5) are:
Step (5-1): to GPRS primary module 5, send the compressed air station data;
Step (5-2): GPRS primary module 5 receives data and puts into buffer zone;
Step (5-3): whether data the first two byte that judgement receives is markup character, if just enter step (5-4); Just by the rejection of data of buffer zone, empty buffer zone if not, and enter step (5-2);
Step (5-4): receive whether the data station period is compressed air station, if just enter step (5-5); Just enter if not step (5-6);
Step (5-5): whether the byte length that judgement receives data is 12, if just data are extracted and the translation data form, store in database, and enter step (5-7), just by the rejection of data of buffer zone, empty buffer zone and enter step (5-2) if not;
Step (5-6): judgement receives whether the data station period is heating plant, if just enter step (5-8), if not, just by the rejection of data of buffer zone, empties buffer zone and returns to step (5-2);
Step (5-7): judgement receives data and whether exceeds early warning range, if just by warning lamp, stereo set and SMS, remind monitor staff's compressed air station data exception, enters step (5-10), if not, just directly enters step (5-10);
Step (5-8): whether the byte length that judgement receives data is 40, if just data are extracted and the translation data form, stores in database, enters step (5-9), just by the rejection of data of buffer zone, empties buffer zone if not; Return to step (5-2);
Step (5-9): judgement receives data and whether exceeds early warning range, if just by pilot lamp, stereo set and SMS, remind monitor staff's compressed air station data exception, enters step (5-10); If not, just directly enter step (5-10);
Step (5-10): calling data storehouse heating plant and compressed air station data are presented at the host computer picture, finish.
This system is mainly divided three layers, is respectively data monitoring layer, data transfer layer and data collection layer, and its system architecture diagram as shown in Figure 1.Each interlayer equipment interface is followed the RS-485 standard, by MODBUS RTU communications protocol, carries out serial communication.
The data monitoring layer: as main website, select server 3 for data monitoring device, and be connected with printer 4 and warning device 1 in system, ups power 2 provides stable electric energy for server 3, prevents the impact of accident power-off on system and main frame; Printer 4 is for the daily sheet of printing statistics, month form etc.; Warning device 1 comprises alarm lamp, stereo set and sends to responsible official's on duty mobile phone by SMS first-class.Major function is to send data request command or data configuration order by GPRS primary module 5 to slave stations such as heating plant and compressed air station data collection layers, the service data of the real-time running data of request msg acquisition layer or change data collection layer, to data show in real time, storage, history report inquiry, printing etc. so that the staff checks real time data and historical data in data server 3 at any time.In addition, server 3 also is connected with the office management system of enterprise, facilitates managerial personnel to manage.
Data transfer layer: mainly adopt the GPRS remote terminal, data collection layer at data monitoring layer and compressed air station and heating plant is provided with the GPRS remote terminal respectively, rely on the wide coverage of China Mobile GSM network resource, the wireless data transmission channel that always online, the communication quality high provides a kind of fast and reliable, mainly be responsible for the real-time packet transmission between data monitoring layer and data collection layer.
Data collection layer: in system as slave station, the order of real-time response data monitoring layer, and the execution result of return command.Compressed air station need to gather respectively the total current in compressed air station loop, the running current of pump motor and three data of pressurized air real-time pressure of air compressor output by current sensor 9 and pressure transducer 10, and carry out data acquisition, analog data is converted to digital quantity signal by AD data acquisition unit 8, be converted to again MODBUS RTU communications protocol form, communicated by GPRS module and data monitoring layer.Heating plant need to pass through flowmeter 13, pressure transducer 10 and temperature sensor 14 three amounts of real-time traffic, pressure and temperature of acquiring heat supply pipeline respectively, receive real-time traffic, pressure and temperature signal by flow integrator 12 simultaneously, real-time traffic is carried out to integration accumulation computing, and real-time online convection cell temperature, pressure compensate, calculate its integrated flux, then by the GPRS remote terminal, data are sent to Utilities Electric Co..Meanwhile because on-the-spot flow integrator 12 only has a serial communication mouth, in order to solve the communication conflict of two GPRS modules, increase a serial ports collector 11 while following again the GPRS communication with the data monitoring layer, receive the TXD end of flow integrator 12 by the RXD order wire of a parallel connection, audit the communication data of the GPRS of Thermal Corp module and flow integrator 12, serial ports collector 11 and the data-switching of auditing is become to the MODBUS RTU communication protocol of standard after store in internal register, when sending the inquiry instruction, the data monitoring layer just by the RS485 communication port, is transferred to the GPRS remote terminal, for the data monitoring layer, read.
2. system
(1) entire system flow scheme design
In software control system, VB6.0 (Microsoft Visual Basic6.0) programming software is housed on the server 3 of Surveillance center, develop the serial data transmitting/receiving program by VB6.0, the uninterrupted poll of 24h every day and collection are from the information of each tracking telemetry and command station, draw friendly man-machine interface, the in real time monitoring display data of respectively standing, and data are carried out to file record, when emergency condition occurs, the system automatic alarm.
System is used Microsoft company that Active X control MSComm is provided in VB6.0, and the program of real-time data acquisition is carried out in exploitation to each website by serial ports.This communication control changes object properties, to object, sends message and, for object event numbering response code, can facilitate serial communication between the completing user application program, both can realize the api function all functions, make again programming efficiency improve, application function strengthens, and program is simple and clear.
System adopts Modbus communication protocol, the Modbus agreement is a request/response protocol, be a kind of application layer Message Protocol, the service of function code regulation is provided, this agreement is for the server/client communication between the equipment of dissimilar bus or network connection.RTU and two kinds of modes of ASCII are supported in Modbus communication, can pass through computer settings ASCII or RTU mode, serial communication parameter (baud rate, verification mode etc.).When configuring each controller, all devices on same Modbus network all must be selected identical serial ports parameter and transmission mode.
When the Software for Design form, usually use Report Designer or third-party product to complete, and export by ActiveX control.This paper obtains the control handle of Excel2003 by the ole automation technology of VB, thereby directly controls the sequence of operations of Excel2003.
Calling excel control in the VB6.0 design process, essence is that Excel is quoted as an external object, the Excel object model provides the object that can carry out from VB6.0 application program inside the modularization manipulation with and related methods, attribute and event.
The overall flow of system as shown in Figure 2.
Because 5 whiles of GPRS primary module of data monitoring layer are carried out data communication with compressed air station and two GPRS modules of heating plant, after transmission inquiry instruction, time delay due to GPRS network, the data of compressed air station and heating plant collection can not be transferred to the data monitoring layer in time, during two GPRS submodule data receivers obliterated data data collision may appear and, in addition due to compressed air station and heating plant to accept the byte number different, easily destroy packet after receiving the data of compressed air station and heating plant simultaneously, affect follow-up processing.In order to make monitoring data transmission, stablize and convenient data processing, avoid the loss of data caused in the data reception process, we have designed a kind of effective scheme, when sending the inquiry instruction, take 10 seconds as the cycle, in first 5 seconds, to compressed air station GPRS module, send the inquiry instruction, and arrange that to produce the byte number that the OnComm event receives be 21,21 bytes of every reception in first 5 seconds OnComm event of just setting out a time, and process follow-up data; Within latter 5 seconds, to heating plant GPRS module, send the inquiry instruction, and arrange that to produce the byte number that the OnComm event receives be 51,51 bytes of every reception in so first 5 seconds OnComm event of just setting out a time, and process follow-up data.Flow process as shown in Figure 3.
As shown in Figure 4, process for the data monitoring layer flow process that receives data.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (10)
1. the long distance control system of tobacco sheet production line, is characterized in that, comprising:
Data collection layer, the inquiry instruction of being responsible for issuing according to the data monitoring layer gathers flux cumulating value, force value, the temperature correlation data of Air Pressure Station, current data and the heating plant of tobacco sheet production line, and data are uploaded to the data monitoring layer by data transfer layer;
Data transfer layer, the data transmission of being responsible for data collection layer is collected is to the data monitoring layer, simultaneously to the inquiry command of the data monitoring layer that receives to data collection layer;
The data monitoring layer, be responsible for to receive the data that data transfer layer transmits, and then adopts the data collision disposal route to the data processing that conflicts, and the data result is monitored, printed or reports to the police, and to data collection layer, issues the inquiry instruction.
2. supervisory system as claimed in claim 1, is characterized in that,
Described data monitoring layer comprises server, and described server is connected with warning device, printer and ups power respectively;
Described server, for realize the Distant supervision and control of system by the system display interface, can realize that the WEB of data shares simultaneously, facilitates managerial personnel to realize telemanagement, data query;
Described ups power, for server provides stable electric energy, prevents the impact of accident power-off on system and main frame;
Daily sheet, month form of described printer for printing statistics;
Described warning device comprises alarm lamp, stereo set and sends to by SMS on responsible official's on duty mobile phone.
3. supervisory system as claimed in claim 1, is characterized in that,
Described data transfer layer comprises the GPRS primary module, and the compressed air station GPRS of described GPRS primary module and tobacco sheet production line is from the heating plant GPRS of module and tobacco sheet production line from the module two-way communication, described GPRS primary module also with described server two-way communication.
4. supervisory system as claimed in claim 3, is characterized in that,
Described GPRS primary module is for after receiving the data inquiry instruction of server, and the inquiry instruction is sent to the compressed air station of tobacco sheet production line and heating plant GPRS from module by GPRS network; Receive the compressed air station of tobacco sheet production line and the monitor data that heating plant GPRS transmits from module, and send the data of reception to server by RS232 and processed and store;
Described compressed air station GPRS is from module when receiving inquiry instruction that the GPRS primary module transmits and address corresponding to this instruction and be the address of compressed air station module by GPRS network, compressed air station GPRS is transferred to the GPRS primary module to the pressure signal of compressed air station water pump electric current, total current and the air compressor delivery air stored in data storage areas by GPRS network from module;
When described heating plant GPRS is the address of heating plant module from module for the inquiry instruction when receive GPRS primary module transmission by GPRS network and address corresponding to this instruction, heating plant GPRS is transferred to the GPRS primary module to the flux cumulating value of the heating plant hot gas of storing in data storage areas, temperature and pressure by GPRS network from module.
5. supervisory system as claimed in claim 1, is characterized in that,
Described data collection layer comprises AD data acquisition unit and serial ports collector, described AD data acquisition unit and compressed air station GPRS are from the module two-way communication, described serial ports collector and heating plant GPRS are from the module two-way communication, described AD data acquisition unit gathers the analog signals of some current sensors, pressure transducer, described serial ports collector also gathers flow integrator information, and described flow integrator also receives the information from flowmeter, pressure transducer, temperature sensor;
Described AD data acquisition unit is converted to digital quantity signal for the 4-20mA analog signals that current sensor and pressure transducer are transmitted, and then single-chip microcomputer is converted to MODBUS agreement RTU form by data, export to compressed air station GPRS from module by RS485, data are temporarily stored in GPRS module buffer zone;
Described serial ports collector is used for auditing the communication data between flow integrator and the GPRS of cogeneration plant module, and data is converted to the MODBUS agreement RTU form of standard, then by RS485, is transferred to heating plant GPRS from module; This audits process does not affect communicating by letter between flow integrator and the GPRS of cogeneration plant module.
6. supervisory system as claimed in claim 5, is characterized in that,
Described current sensor, by the size of current of mutual inductance principle induction line, adopts the output of two-wire system connection, the current signal of 4-20mA;
Described pressure transducer, for detection of the pressure of air compressor output squeezing air and the pressure of heating plant gas pipe line hot gas, adopts the two-wire system connection, the current signal of output 4-20mA;
Described temperature sensor, for detection of the hot air temperature value of carrying from cogeneration plant, adopts the two-wire system connection, output 4-20mA current signal.
7. supervisory system as claimed in claim 5, is characterized in that,
Described flowmeter by the instantaneous delivery of pipeline, adopts the two-wire system connection for detection of the hot gas of carrying from cogeneration plant, and the current signal of output 4-20mA is to flow integrator;
Described flow integrator will be for gathering from flowmeter instantaneous delivery, temperature sensing actuator temperature, the pressure transducer pressure signal of gas pipe line collection, and according to certain algorithm, instantaneous delivery is added up to the flux cumulating value as pipeline, and flux cumulating value, force value, temperature information are transferred to the GPRS module.
8. as the method for supervising of the long distance control system of the described tobacco sheet production line of above-mentioned arbitrary claim, it is characterized in that, mainly comprise the steps:
Step (1): start; The data monitoring layer adopts the first data collision disposal route to send the inquiry instruction to compressed air station, the heating plant of tobacco sheet production line respectively by the GPRS primary module;
Step (2): the compressed air station of tobacco sheet production line, heating plant GPRS receive the inquiry instruction from module, and send the inquiry instruction to data collection layer;
Step (3): data collection layer receives the inquiry instruction, confirms after errorless with the MODBUS protocol format, to send to GPRS from module the data of collection;
Step (4): the compressed air station of tobacco sheet production line, heating plant GPRS are transferred to GPRS primary module by the data acquisition layer data received by GPRS network from module;
Step (5): the GPRS primary module sends to the data monitoring layer to carry out the second data collision processing and Data Format Transform, storage demonstration the data that receive; Finish.
9. method as claimed in claim 8, is characterized in that, the concrete steps of described step (1) are as follows:
Step (1-1): start; Communications parameter arranges, and described parameter comprises baud rate or PORT COM;
Step (1-2): judge whether PORT COM is opened, if just enter step (1-3); Be exactly that serial communication is invalid if not, return to step (1-2);
Step (1-3): timer adds 0.5 second; Judge that whether timer is by 5 seconds, if just enter step (1-4), just enter if not step (1-5);
Step (1-4): judge that whether timer is by 10 seconds, if step (1-3) is returned in zero clearing with regard to timer; Just enter if not step (1-6);
Step (1-5): arrange and receive 25 bytes, produce the OmCom event, to compressed air station GPRS module, send data inquiry instruction; Determine whether compressed air station inquiry instruction according to the station period; If so, compressed air station sends the compressed air station data to the GPRS primary module; Just return to if not step (4-3);
Step (1-6): 51 the bytes generation OmCom events that receive are set, send data inquiry instruction to heating plant GPRS module, determine whether heating plant inquiry instruction according to the station period, if, heating plant sends the heating plant data and finishes to the GPRS primary module, just returns to if not step (1-3).
10. method as claimed in claim 8, is characterized in that, the concrete steps of described step (5) are:
Step (5-1): to the GPRS primary module, send the compressed air station data;
Step (5-2): the GPRS primary module receives data and puts into buffer zone;
Step (5-3): whether data the first two byte that judgement receives is markup character, if just enter step (5-4); Just by the rejection of data of buffer zone, empty buffer zone if not, and enter step (5-2);
Step (5-4): receive whether the data station period is compressed air station, if just enter step (5-5); Just enter if not step (5-6);
Step (5-5): whether the byte length that judgement receives data is 12, if just data are extracted and the translation data form, store in database, and enter step (5-7), just by the rejection of data of buffer zone, empty buffer zone and enter step (5-2) if not;
Step (5-6): judgement receives whether the data station period is heating plant, if just enter step (5-8), if not, just by the rejection of data of buffer zone, empties buffer zone and returns to step (5-2);
Step (5-7): judgement receives data and whether exceeds early warning range, if just by warning lamp, stereo set and SMS, remind monitor staff's compressed air station data exception, enters step (5-10), if not, just directly enters step (5-10);
Step (5-8): whether the byte length that judgement receives data is 40, if just data are extracted and the translation data form, stores in database, enters step (5-9), just by the rejection of data of buffer zone, empties buffer zone if not; Return to step (5-2);
Step (5-9): judgement receives data and whether exceeds early warning range, if just by pilot lamp, stereo set and SMS, remind monitor staff's compressed air station data exception, enters step (5-10); If not, just directly enter step (5-10);
Step (5-10): calling data storehouse heating plant and compressed air station data are presented at host computer, finish.
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