CN1300977C - An open method and system for ultra-remote industrial monitoring information integration - Google Patents
An open method and system for ultra-remote industrial monitoring information integration Download PDFInfo
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Abstract
The present invention discloses an open method and an open system for integrating over-distance industrial monitoring information. The data processing flow of the method for integrating information comprises the following parts that a long-distance monitoring computer submits monitoring instructions to an industrial monitoring data server; the industrial monitoring data server processes the instructions and returns results; the long-distance monitoring computer updates an over-distance script and extending a logic function; scripts at the end of the industrial monitoring data server explain the operation and maintain a script base. The system for integrating information is orderly composed of the industrial monitoring data server, an industrial grade GSM module, a wireless data transmission network, an industrial grade GSM module and the long-distance monitoring computer. The present invention has open type and plug in system characteristics to make industry engineers and application engineers capable of adding functional plug in units to a long-distance monitoring system according to service requirements to realize over-distance function extension and logic adjustment. The present invention has the advantages of strong extended capability, high safety, realization of low cost, etc.
Description
Technical field
The present invention relates to the industrial automation field, particularly a kind of open overlength distance industrial monitoring information integration method and system.
Background technology
The information integration of overlength distance industrial monitoring is meant between information source and the supervisory control comuter apart from overlength (tens of to more than the several hundred kilometers), is difficult to use the class special industry monitoring of wired or wireless local area network (LAN), dialing network.Typical overlength distance industrial monitoring demand comprises:
1) control point disperses very much, is in the isolated area that the network communication means lack, the purpose monitoring of for example various environment measuring variablees, hydraulic power facility;
2) control point is in the large-scale motion process, can't use traditional cable network, and existing WLAN (wireless local area network) is difficult to satisfy coverage requirement as 802.11 grades, for example the monitoring of the vehicles such as vehicle, ship, aircraft;
3) need the related personnel can participate in monitoring whenever and wherever possible, and related personnel's position can't be determined, for example in the industrial production, just in time fault message is sent to the service engineer in case equipment fault takes place.
The information integration of overlength distance often has following characteristics:
1) data volume is less.Be similar to environmental quality and detect such application scenario, data volume has occurrence frequency low (a few hours once), sporadic strong, feature that single communication data amount is little, need not to keep the connection of data link always;
2) weak real-time.Different with industry spot monitoring in real time, these are used and often real-time are required lowlyer, generally do not wait by several days from a few minutes;
3) low-cost requirement.For most of such application, control is low-cost most important;
4) can safeguard, the extensibility requirement.Cover extensively owing to distribute, require to have the maintenance mechanism of the maintenance and expansion under a kind of remote mode, guarantee the availability of system.
Adopt at present modes such as enterprise's private network sets up, radio station, leased satellite, perhaps construction cost, maintenance cost height, perhaps application surface is limited, and maintainability and poor expandability can't satisfy enterprise's current demand in this respect.The present invention is based on the GSM SMS communication, provide the effective workaround of low cost, high availability and an enhanced scalability for solving this type of information integration problem with broad coverage rate.
Summary of the invention
The purpose of this invention is to provide and relate to a kind of open overlength distance industrial monitoring information integration method and system.
The flow chart of data processing of information integration method comprises with the lower part:
A) the remote monitoring computer is submitted monitored instruction to the industrial monitoring data server;
B) the industrial monitoring data server carries out instruction process and return results;
C) the remote monitoring computer carries out the script renewal and the logic function expansion of overlength distance;
D) script of industrial monitoring data server end is explained operation and the maintenance of script storehouse.
Information integrated system is successively by the industrial monitoring data server, the technical grade gsm module, wireless data transmission network, technical grade gsm module and remote monitoring computer are formed, said industrial monitoring data server is by historical data base, real-time data base, script is explained actuator, the script storehouse, monitoring service system is formed, historical data base, real-time data base respectively successively with monitoring service system, the monitoring client links to each other, historical data base, real-time data base is explained actuator with script respectively successively, monitoring service system, the monitoring client links to each other, and actuator is explained with script respectively in the script storehouse, monitoring service system links to each other.
Advantage of the present invention:
1) process monitoring faces the complicated personality functional requirement, these function embodiments the individual difference of process enterprise, be the core competence of enterprises place.But closed supervisory control system is often only considered general utility functions, is difficult to satisfy individual need.And for open supervisory control system, these functions can realize by enterprises Application Engineer's secondary development.
2) open supervisory control system is an ever-increasing system, along with the increase of service time, the personalized function module is enriched constantly, moreover, combination by the simple functions module can produce new sophisticated functions module, thereby business demand is realized faster and better.
3) open by design of supervisory control system is left unnecessary functions for secondary development, has avoided undue design (over-designing) effectively, has shortened the construction cycle of supervisory control system greatly, has reduced the complexity of Design of Monitoring and Control System, has reduced the cost of enterprise.
Description of drawings
Fig. 1 is open overlength distance industrial monitoring information integrated system block diagram;
Fig. 2 is the data pack subframe schematic diagram during monitored instruction transmission and result return
Fig. 3 is that block diagram is safeguarded in the script explanation operation and the script storehouse of industrial monitoring data server
Fig. 4 is the asymmetric cryptosystem deciphering schematic diagram in the crucial monitor data transmission
Fig. 5 is the digital signature schematic diagram of safety identification authentication
Embodiment
The GSM network of China Mobile and CHINAUNICOM has covered most of area, the whole nation at present, and can realize roaming in a plurality of countries and regions.Therefore the wireless wide area network condition of overlength distance information integration possesses.Point-to-point short message (SMS) business provides mobile client terminal (for example mobile phone) to send or receive the function of the message of limited length.Short message service is undertaken by sms center (SMSC).Compare with other wireless communication services, short message has following some advantage: cost is low, and every message is between somewhat to one jiao; Be suitable for face width, nearly all mobile client terminal equipment is all supported message function; Sms center provides the short message storage and transmits, and the temporary close of mobile client terminal can not cause message to send failure yet.Thereby short message service is fit to small data quantity, weak real-time, the low-cost data communication that requires very much, meets the demand of most of overlength distance information integrations.
The short message encoding and decoding standard is set up (ETSI GSM 03.40) by ETSI, follow this standard just can with the mobile terminal communication of support SMS.But for the monitor data transmission of information integration, it is not enough only relying on the short message transmission layer protocol.Therefore at first, the length of each short message is very limited, only is 140 bytes, under the bigger situation of packet content, can only be divided into several message frames and transmit, and need cut apart and assembling is made a stipulation packet; Secondly because Short Message Service is connectionless service, and data transmission credibility is low, be to send or receive short message all may to be lost or incur loss through delay.In order to make monitor client reasonably obtain response in the time, the agreement that must have request to resend; Therefore the problem that request resends and bring the message frame content to repeat also needs to set up a cover repetition message frame drop mechanism.Based on above some, the present invention uses for the short message under the industrial monitoring data integration and has formulated transport layer protocol as shown in Figure 2.This agreement is added the transport layer protocol message header for each message frame, and its message header comprises three section parameters:
1) be used to discern the Digital ID of the packet under this frame, the scope of Digital ID must enough make the computer can unique recognition data bag.Because there is effective time in Short Message Service itself, therefore only need be in this time period Digital ID unique, Izvestia just can be identified.The packet maximum number that will send every day and multiplying each other the effective time of short message can obtain the sign scope that can satisfy the demands.
Whether 2) maximum of packet is divided frame number, be used for the designation data bag and sent or receive complete.
3) message frame sequence number is divided the frame number value from 1 to maximum, the position of this frame of mark in packet.It identifies a specific message frame uniquely with the packet Digital ID.The request repeat of message frame, abandoning, recombinating all relies on them to carry out.
For monitor message is integrated, the term of validity of message is general maximum to be set to 2 days, and for the small data quantity communication, one day short message can be above 1000 yet, take into account the characteristics and the demand of binary coding mode, the present invention determines that the digital scope 65535 that can represent with two bytes is the sign scope.This has created the space in the future further expanded application.The maximum frame number scope of dividing generally is no more than 50.Same reason, it is set to 255.
Data transfer layer processing method based on the industrial monitoring information integration of GSM short message is as follows:
1) divide frame: at transmit leg, transport layer is cut into several message frames according to the maximum length that short message sends with packet to be sent, adds message header for each message frame then;
Whether 2) framing: the recipient, transport layer judges according to the package identification of short message whether message frame belongs to same packet, come the specified data bag to receive fully according to frame number and the maximum frame number that divides again;
3) re-send request may: either party does not receive the message frame of expection in the time limit, can send re-send request may according to the Digital ID and the message frame sequence number of expection message frame.For transport layer, just incur loss through delay or overtime and therefore re-send request may that take place is a relatively-stationary numerical value at the message frame in the packet.As for the re-send request may of application layer, can design voluntarily by application layer.Such design can enhancement layer and layer between independence, reduce coupling.
4) repeating frame abandons: either party has received Digital ID, the packet that the message frame sequence number is identical with existing message frame, is then abandoned.
Transport layer has shielded the data sending processing of short message length restriction and unreliable channel, and for the functional interface that simple unanimity is provided is used in monitoring, thereby the developer who makes monitoring use can be absorbed in the processing of monitoring flow process.
A kind of overlength distance industrial monitoring information integrated system as shown in Figure 1 based on the GSM short message, its related monitored instruction is used to the remote monitoring computer and proposes the monitoring application request to data server, for example to OPC data server inquiry real time data, to the historical data base enquiry of historical data etc.Data server is carried out client's request, and the result is sent to the remote monitoring computer.Designed three class monitored instructions among the present invention:
1) inquiry can be inquired about real time data from the OPC data server with the SEL instruction, as
SEL?FIC001.SP，PIC001.PV
Because SEL is a default mode, therefore can directly send
FIC001.SP，PIC001.PV
Inquire about the real time data of these two stations;
2) be provided with, the SET instruction is used for submitting the instruction that data are set to the OPC data server, as
SET?FIC001.SP＝0.5
The set point of FIC001 is set to 0.5;
3) SQL instruction, the SQL instruction can and be carried out simple statistical computation to the historical data base enquiry of historical data, and the instruction behind SQL will be regarded as SQL statement and be carried out, as
SQL?SELECT?PV，SampTIME?FROM?TB_LFIC?WHERE?CID＝’FIC001’ANDFIC001.PV＞0.8AND?SampTIME?BETWEEN?‘2002-10-1’AND?‘2002-10-5’
FIC001 station PV value is greater than 0.8 data and correspondence time thereof between 1 to 5 October in 2002 of inquiry.
A kind of open overlength distance industrial monitoring information integrated system, its supervisory control system is with the most important difference of closed supervisory control system that on its framework the data server of open supervisory control system has script and explains actuator and script function function library (as shown in Figure 3).Have and the module of explaining the actuator swap data at monitoring service system, and the administration module in script function storehouse.The monitored instruction of the different operational modes that design among the present invention comprises:
1) single operating instruction is fit to most of simple disposable tasks, and command format is:
MOD?DBADD/DBDEL?ONCE?MODNAME?PARAMS
Wherein MOD represents it is the resume module instruction, and DBADD/DBDEL ONCE represents to add or delete disposable execution command, and MODNAME is the Executive Module title, and PARAMS is an execution parameter;
2) Event triggered instruction, when satisfying certain parametrization condition, instruction is performed, and command format is
MOD?DBADD/DBDEL?TRIG?MODNAME?PARAMS
Wherein TRIG is the keyword of Event triggered instruction;
3) execution command regularly for example needs filtering algorithm, real-time optimization algorithm etc. by the fixed cycle double counting, and command format is
MOD?DBADD/DBDEL?TASK?MODNAME?CYCLETIME?PARAMS
Wherein CYCLETIME refers to the blanking time that task is carried out.
Monitoring logic that increases newly and module in the mode of expansion script after this locality debugging, be sent to server by short message, monitoring service system is according to the monitored instruction type or give the execution of explanation actuator, or includes it in function script storehouse and call for other scripts.
Fail safe and reliability design also are vital at native system.Its core is that application layer defines and discerns user identity, encrypting and decrypting is carried out in the transmission of important monitor data.Mainly comprise following three levels:
A) SIM card address: the SIM card address is unique and may be duplicated by other users hardly.Therefore, use the SIM card address can prevent that as the ground floor of authentication other users from using other SIM card addresses to carry out unauthorized access.The realization of this one deck does not need the client to do any additional act, only needs message to be filtered according to the authorized address of preserving at server end.
B) user password:, but still may face and danger such as lose, usurp although SIM card has uniqueness and exclusiveness in the GSM network.Therefore use user password can prevent that as the second layer of authentication unauthorized user from using back door to obtain authorized SIM card access system.The realization of this one deck needs the client to supply secure password in the visit prerequisite, and server just can carry out next step action after checking correctly.
C) asymmetric cryptosystem and digital signature: leak and distorted in order further to prevent important monitor data, can take the method for asymmetric cryptosystem to prevent to leak, adopt the integrality of the method guarantee information of digital signature.The realization of asymmetric cryptosystem (Fig. 4) is transferred to server after needing the user to use the encrypted private key data, and server is according to user's PKI deciphering, and command adapted thereto is carried out in the correct back of deciphering; Digital signature (Fig. 5) is owing to often seem huge behind the data asymmetric cryptosystem, therefore only need to guarantee the data of integrality for some, client only need take hashing algorithm to generate irreversible hash code-informative abstract to data, again informative abstract is carried out asymmetric cryptosystem, server at first recomputates informative abstract, deciphering receives informative abstract then, compares, and is carried out after errorless.
Claims (9)
1. open overlength distance industrial monitoring information integration method is characterized in that the flow chart of data processing of information integration method comprises with the lower part:
A) the remote monitoring computer is submitted monitored instruction to the industrial monitoring data server;
B) the industrial monitoring data server carries out instruction process and return results;
C) the remote monitoring computer carries out the script renewal and the logic function expansion of overlength distance;
D) script of industrial monitoring data server end is explained operation and the maintenance of script storehouse.
2. a kind of open overlength distance industrial monitoring information integration method according to claim 1, it is characterized in that, said remote monitoring computer is submitted monitored instruction to the industrial monitoring data server, by the remote monitoring computer monitoring demand being translated into the embedded monitoring instruction, can be inquiry, setting or general SQL instruction; Monitored instruction is divided into a plurality of packets and generates the SMS message frame according to the message length restriction of short message; The SMS message frame sends to the industrial monitoring data server by the technical grade gsm module; As send failure, then whether retransmit or delayed delivery according to the state decision of wireless data communication network.
3. a kind of open overlength distance industrial monitoring information integration method according to claim 2, it is characterized in that, said remote monitoring computer is submitted monitored instruction, the overlength distance communication modes that is based on the GSM short message of employing to the industrial monitoring data server; The SMS communication agreement comprises transport layer protocol and monitored instruction agreement; Described transport layer protocol adds the transport layer protocol message header for each message frame, and its message header comprises three section parameters:
A) be used to discern the Digital ID of the packet under this frame, the scope of Digital ID enough makes the computer can unique recognition data bag;
Whether b) maximum of packet is divided frame number, be used for the designation data bag and sent or receive complete;
C) message frame sequence number, value is divided frame number from 1 to maximum, the position of this frame of mark in packet, it is with packet Digital ID identification message frame uniquely; The request repeat of message frame, abandoning, recombinating all relies on them to carry out.
4. a kind of open overlength distance industrial monitoring information integration method according to claim 1, it is characterized in that, said industrial monitoring data server carries out instruction process and return results, handles the short message received by the technical grade gsm module with automatic regular polling or Event triggered mode by the industrial monitoring data server; To the short message of receiving, gather splicing according to its corresponding packet Digital ID, maximum frame number, the message frame sequence number of dividing, form complete monitored instruction; Select corresponding processing mode according to monitored instruction, carry out inquiry, the renewal operation of database, and the operation result of formation instruction, operation result is divided into a plurality of packets according to the message length restriction of short message, and generating the SMS message frame, the SMS message frame turns back to the remote monitoring computer by the technical grade gsm module.
5. a kind of open overlength distance industrial monitoring information integration method according to claim 4, it is characterized in that, said industrial monitoring data server carries out instruction process and return results, monitored instruction is made up of instruction type and command content two parts, and the present invention comprises for three class monitored instructions of OPC data server and historical database server design:
A) inquiry can be inquired about real time data from the OPC data server with the SEL instruction,
SEL?FIC001.SP，PIC001.PV
Because SEL is a default mode, therefore can directly send
FIC001.SP，PIC001.PV
Inquire about the real time data of above-mentioned two stations;
B) be provided with, the SET instruction is used for submitting the instruction that data are set to the OPC data server,
SET?FIC001.SP＝0.5
The set point of FIC001 is set to 0.5;
C) SQL instruction, the SQL instruction can and be carried out simple statistical computation to the historical data base enquiry of historical data, and the instruction behind SQL will be regarded as SQL statement and be carried out.
6. a kind of open overlength distance industrial monitoring information integration method according to claim 1, it is characterized in that, the script that said remote monitoring computer carries out overlength distance upgrades and the logic function expansion, by the scripted code transfer instruction new scripted code is transferred to the industrial monitoring data server by the remote monitoring computer, if having the scripted code of identical purpose function exists at industrial monitoring data server end, then industrial monitoring data server end is replaced original code after by the fail safe marginal testing, thereby realizes that script upgrades; Otherwise industrial monitoring data server end adds this code to the script storehouse after by the fail safe marginal testing, further carry out this program in machine code with single, triggering or timing by the remote monitoring computer, thereby realize the logic function expansion by the associated script function command.
7. a kind of open overlength distance industrial monitoring information integration method according to claim 1, it is characterized in that, the script of said industrial monitoring data server end is explained operation and the maintenance of script storehouse, explain that by script actuator is at server end explanation execution script, script explains that the executive process of actuator is independent of the service end monitoring process, transmits execution parameter and execution result by pipeline, incident, semaphore, shared file mode between the process; The script storehouse is safeguarded and is undertaken by the monitor service program, comprises that inspection of script security reliability and code increase, upgrade, delete; The maintenance in script storehouse submits to scripted code to carry out the expansion of maintenance function by the remote monitoring computer.
8. a kind of open overlength distance industrial monitoring information integration method according to claim 7, it is characterized in that, the script of said industrial monitoring data server end explains that operation and script storehouse safeguard, employing be to expand language for the generic script that expansion overlength distance industrial monitoring information integrated system function designs; The script extended instruction is moved in following three kinds of modes:
A) single operating instruction is fit to most of simple disposable tasks, and command format is:
MOD?DBADD/DBDEL?ONCE?MODNAME?PARAMS
Wherein MOD represents it is the resume module instruction, and DBADD/DBDEL ONCE represents to add or delete disposable execution command, and MODNAME is the Executive Module title, and PARAMS is an execution parameter;
B) Event triggered instruction, when satisfying certain parametrization condition, instruction is performed, and command format is
MOD?DBADD/DBDEL?TRIG?MODNAME?PARAMS
Wherein TRIG is the keyword of Event triggered instruction;
C) regularly execute instruction, command format is
MOD?DBADD/DBDEL?TASK?MODNAME?CYCLETIME?PARAMS
Wherein CYCLETIME refers to the blanking time that task is carried out.
9. open overlength distance industrial monitoring information integrated system, it is characterized in that, it is successively by the industrial monitoring data server, server end technical grade gsm module, wireless data transmission network, remote monitoring computer terminal technical grade gsm module and remote monitoring computer are formed, said industrial monitoring data server is by historical data base, real-time data base, script is explained actuator, the script storehouse, monitoring service system is formed, historical data base, real-time data base links to each other with the monitoring client by monitoring service system respectively, historical data base, real-time data base explains that by script actuator links to each other with the monitoring client with monitoring service system respectively, and actuator is explained with script respectively in the script storehouse, monitoring service system links to each other.
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| CN1878206B (en) * | 2006-07-07 | 2010-11-10 | 华为技术有限公司 | Event subscription method and system |
| CN101969383A (en) * | 2010-09-27 | 2011-02-09 | 深圳市共济科技有限公司 | Monitoring equipment and visual control method and device thereof |
| CN103905253B (en) * | 2014-04-04 | 2018-09-28 | 浪潮电子信息产业股份有限公司 | A kind of server monitoring management method based on Nagios and BMC |
| CN106921662B (en) * | 2017-03-01 | 2020-01-03 | 北京牡丹电子集团有限责任公司数字电视技术中心 | Real-time stream connection life cycle management method |
| CN111371653A (en) * | 2020-03-13 | 2020-07-03 | 杭州和利时自动化有限公司 | Equipment monitoring data display method and related device |
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| EP1349025A1 (en) * | 2002-03-27 | 2003-10-01 | Urmet Domus S.p.A. | Apparatus for remotely controlling and monitoring functions, particularly for domestic appliances |
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