WO2012080995A1 - Système et procédé d'acquisition de données par internet - Google Patents

Système et procédé d'acquisition de données par internet Download PDF

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Publication number
WO2012080995A1
WO2012080995A1 PCT/ID2011/000008 ID2011000008W WO2012080995A1 WO 2012080995 A1 WO2012080995 A1 WO 2012080995A1 ID 2011000008 W ID2011000008 W ID 2011000008W WO 2012080995 A1 WO2012080995 A1 WO 2012080995A1
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WO
WIPO (PCT)
Prior art keywords
data
web
remote terminal
control
computer unit
Prior art date
Application number
PCT/ID2011/000008
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English (en)
Inventor
Ricky Gondosubroto
Original Assignee
Ricky Gondosubroto
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricky Gondosubroto filed Critical Ricky Gondosubroto
Publication of WO2012080995A1 publication Critical patent/WO2012080995A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors

Definitions

  • the present invention relates to a system and method for getting data from an industrial infrastructure and controlling the functioning of the infrastructure. More particularly, the present invention is directed to a system and method of data acquisition and control which is applied to industrial processes, machines and equipments over a telecommunication network.
  • the data acquired and visualized on a real-time basis from the whole industrial processes in a factory/plant allow all parties to whom the data may concern, from operators to top level managements, to promptly recognize any abnormalities. And in response to the data, the persons may take any necessary measures to overcome the situation whereby the downtime can be reduced to minimum and the production efficiencies and competitiveness may be maintained on increased.
  • the records of production data are also very useful for further analysis required in implementing continuous improvement in order to give the company a competitive edge in the future.
  • An industrial process generally consists of a number of stages, each of which is performed by a particular machine or tool (40a, 40b or 40c) as illustrated in the block diagram of Figure 1 incorporated herein as part of this patent specification.
  • the tasks (stages) to be performed by the machines or tools (40a, 40b or 40c) may be independent from each other, or may be interdependent and occur sequentially.
  • the data obtainment from, and the control of, the whole operations of machineries such as mentioned previously are well known among experts in this field.
  • SCADA supervisory control and data acquisition
  • the SCADA system is designated a reference numeral (200) in Figure 1.
  • the SCADA (200) generally consists of a human- machine interface (HMI) (210), a historical database for keeping data history (220) , a database for data collecting (230) .
  • HMI human- machine interface
  • the data indicating the status of the machine, process or equipment (40a, 40b and 40c) are obtained by HMI server (210) from respective conventional remote terminal units (100) .
  • Each conventional remote terminal unit (100) may be in the form of a programmable logic controller (PLC) provided in its corresponding machine or equipment and each has already been equipped with a computer connection that enables it to be used as a remote terminal unit, or as other conventional remote terminal unit added to the machine or equipment.
  • PLC programmable logic controller
  • the data obtained using this system is displayed on a graphical user interface (300) .
  • the SCADA system (200) can be provided with a web interface (240) .
  • the SCADA system usually uses some software's bearing commercial trademarks. These softwares are of licence types, which are relatively high in price.
  • the SCADA system as referred to above has the following disadvantages.
  • the human-machine interface server (210) acts as a client, whereas each PLC or conventional remote terminal unit (100) acts as a server.
  • the human-machine interface server (210) must periodically and continually access (poll) all the conventional remote terminal units (100) to monitor in a real time basis any occurrence of data change and make some settings or adjustment (overriding) as required according to the data change. If for example there is an increase in the number of machines, processes and equipments in the system in order for increasing the production level, the usage of data bandwidth on this data acquisition and control communication will become inefficient and slower.
  • the addition of one or more new machines and PLCs or conventional remote terminal units (100) to the system will make it necessary to make some adjustment or settings on the side of the human-machine interface server (210) in order to accommodate the new equipment (s) .
  • the objective of the present invention is to overcome the disadvantages of the system and method of data acquisition and control for use in industrial infrastructures as described above.
  • the objective can be achieved by the present invention by providing a system of web-based data acquisition and control, wherein the system comprises:
  • a microcontroller device having a capability to control and manipulate registers like what a programmable logic controller would do, and equipped with a data sending register and a data receiving register,
  • a digital input port for receiving digital input signals representing, among other things, the operation condition of the industrial machine, the notification that a product has been completed, supporting calls to maintenance technician or supervisor, and other information
  • an analog input port having a function to receive data in the form of analog signals
  • a digital output port for outputting digital data, control activations and operation indicators of the industrial machine status and other information
  • a serial port having a function to send a suitable information regarding the operation condition of an industrial machine status to a 7-segment display device or a dot-matrix display device, or to receive serial data inputs
  • a data collecting computer which includes at least a web server serving the remote terminal units, a hypertext processor application program associated with a script page for use in inputting, requesting and processing data regarding the operation condition or the operation indicator of an industrial machine, and a database,
  • each of those remote terminal units acts as a web client and actively accesses the script page stored in the web server in order to send data to be processed by the hypertext processor application program and then to receive response data as a reply from the web server.
  • the database is a MySQL server
  • the web server is an Apache HTTP Server
  • the server-side scripting language is PHP Hypertext Preprocessor which all is free software.
  • system is further provided with a computer unit for data visualization connectable by wire or wireless to the data collecting computer unit, wherein the data visualization computer unit includes at least one web browser and one display device and also uses PHP AJAX to display the information on an online basis.
  • the data collecting computer unit and the data visualization computer unit may be in the form of a personal computer, such as a desktop computer, a laptop computer, a PC tablet or a PDA (Personal Digital Assistant) unit.
  • a personal computer such as a desktop computer, a laptop computer, a PC tablet or a PDA (Personal Digital Assistant) unit.
  • the invention is also providing a method for use in implementing the system of web-based data acquisition and control according to said above embodiments of the present invention.
  • the remote terminal unit(s) Since the remote terminal unit(s) is programmed in such a manner that it will be sending data to the data collecting computer unit only if there is a change in the operation data of the industrial machine being controlled by the unit(s), the usage of communication bandwidth for getting data and control will become more efficient and faster.
  • remote terminal unit With such a client-server communication principle between remote terminal unit and data collecting computer unit, the addition of one or more new remote terminal units would be easier to handle without having to undertake any substantial adjustments or settings at the side of data collecting computer unit, and the new remote terminal unit (s) would be regarded by the system merely as one or more additional access by one or more web clients having different identities (IDs) .
  • IDs identities
  • Figure 1 is a block diagram illustrating a conventional system of data acquisition from industrial machines .
  • Figure 2 is a block diagram illustrating a system of web-based data acquisition according to one embodiment of the present invention implemented in industrial machines.
  • FIG. 3 is a block diagram showing the details of web-based data acquisition system according to the present invention. Detailed Description of the Invention
  • FIG. 2 One example of the embodiment of web-based data acquisition and control system according to the present invention, which is applied in a number of machines or industrial equipments, is shown in Figure 2.
  • Various type of machines or equipments commonly used in industry such as machines equipped with programmable logic controllers, machines controlled with logic relays or machines controlled manually, may be used with this invention.
  • machines or industrial equipments as mentioned above include a computer numerical control machine, a cutting machine, a plastic molding machine and so on. nowadays this invention can be used in controlling one or more machines.
  • FIG. 2 For the sake of illustrating the invention, there are shown only three industrial machines (40a, 40b and 40c) in Figure 2.
  • Each of the machines (40a, 40b and 40c) is connected to one respective remote terminal unit (10) already provided with a programmable logic capability.
  • each remote terminal unit (10) is able to control the operation of its respective machine (40a, 40b or 40c) according to certain commands designated to the machine and is also capable to display information regarding the machine's operation condition, for example on a 7-segment display device or a dot-matrix display device (14) .
  • Each of those remote terminal units (10) is also provided with an ethernet port (designated as reference numeral 13 in Figure 3) to establish a full- duplex communication (sending and receiving data in the same time) with the data collecting computer unit (20) .
  • the data collecting computer unit (20) mainly functions to serve the remote terminal units (10), i.e. to present, request and process data relating to the operation of the machines (40a, 40b or 40c) each controlled by its respective remote terminal unit (10) .
  • the data collecting computer unit (20) according to the present invention is designed to have a capability to communicate through a telecommunications network, for example through an internet network.
  • the data collecting computer unit (20) will include at least a web server (26) , a hypertext processor application program (24) provided with a script page, and a database (22) .
  • the data collecting computer unit (20) can be accessed by a data visualization computer unit (30) through an internet network (50) .
  • the data visualization computer unit (30) should be equipped with, among other things, a display device (32), a web browser (34) like Mozilla Firefox for example, which is able to support Hypertext Preprocessor (PHP) AJAX (Asynchronous JavaScript and XMLHTTP) (33) and/or Cascading Style Sheet (CSS) program (35) to display information on an online basis.
  • PDP Hypertext Preprocessor
  • AJAX Asynchronous JavaScript and XMLHTTP
  • CSS Cascading Style Sheet
  • the data collecting computer unit (20) and the data visualization computer unit (30) may be in the form of a personal computer, such as a desktop computer, a laptop, a tablet PC or a PDA (Personal Digital Assistant) in each of which has been installed a web browser and a Hypertext Preprocessor suitable for an online access through the internet.
  • the softwares used for the web server (24) and for the hypertext processor application program (24) used with the data collecting computer unit (20) are all free softwares and this makes the system according to this invention becoming much less expensive compared to conventional systems using commercially licensed softwares.
  • the web server (24) may use Apache
  • the database may use MySQL
  • the hypertext processor application program (24) may use Hypertext Preprocessor (PHP) .
  • Each remote terminal unit (10) attached to an industrial machine consists of
  • a digital input port having a function to receive input in the form of digital input signals representing among other things the operation condition of the industrial machines (40a, 40b or 40c) , information that a product has been completed, supporting calls to maintenance technician or supervisor, and other information
  • a serial port (17a) having a function to send suitable information regarding the operation condition of the industrial machine status (40a, 40b or 40c) to a 7-segment display device or a dot-matrix display device, or to receive serial data inputs.
  • the digital signal input supplied to the digital input port (15) includes signals, for example, representing conditions as follows: a condition indicating that the machine is not in operation (idle) , a condition indicating that the machine is in operation (running) , a condition indicating that the machine has malfunction (fault), a product has been completed by the machine, and information regarding a model being processed by the machine (40a, 40b or 40c), or supporting calling signal to maintenance technician or supervisor.
  • the digital signal output from the digital output port (11) may comprise, for example, control activations and operation indicators of the machine (40a, 40b or 40c) and other information.
  • the data collecting computer unit (20) at least includes a web server (26) having a function to serve the remote terminal units (10), a hypertext processor application program (24) provided with a script page, and a database (22) .
  • the communication between the data collecting computer unit (20) and the remote terminal unit (10) takes place according to the principle of client/server through the ethernet port (13) and data channels (10a, 10b) .
  • the remote terminal unit (10) will serve as a client, whereas the data collecting computer unit (20) will serve as a server.
  • the web server (26) provides a script page created by the hypertext processor application program (24) .
  • the script page is provided for use in inputting, requesting and processing the data regarding the operation condition or operation indicator of the industrial machine (40a, 40b or 40c) .
  • the database (22) has a function to store all the data and their changes that occurrred during the process of controlling the machine operations (40a, 40b or 40c) .
  • the data comprise signals that may represent a condition where a machine is not in operation, a condition where a machine is in operation, a condition where a machine is in malfunction, a product has been completed by a machine, information regarding the model being processed by a machine, and/or a supporting calling signal to maintenance technician or supervisor.
  • the microcontroller device (12) is programmed in such a manner that the remote terminal unit (10) will serve as a web client and actively access the web server (26) at the data collecting computer unit (20) in order to send the latest operation data of the machine (40a, 40b or 40c) and receives response data, as a reply from the server, which is then propagated to the machine (40a, 40b or 40c) for activating control as required.
  • the data visualization computer unit (30) is connectable by wire or wireless to the data collecting computer unit (20) .
  • the two computer units are connected to each other by an internet network (50) . Therefore, in addition to have a display device (32) the computer unit (30) should also have a web browser (34), like Mozilla Firefox, that supports Hypertext Preprocessor (PHP) AJAX (33) and/or Cascading Style Sheet (35) to enable displaying information on online basis from the web server (26) located on the data collecting computer unit (20) .
  • a web browser like Mozilla Firefox, that supports Hypertext Preprocessor (PHP) AJAX (33) and/or Cascading Style Sheet (35) to enable displaying information on online basis from the web server (26) located on the data collecting computer unit (20) .
  • the microcontroller device (12) at the remote terminal unit (10) is programmed in such a way that it propagates to the corresponding data sending register (12b) signals representing the operation condition and the activation of the machine (40a, 40b, 40c) and other information as described previously.
  • a signal designating that a product has been completed by a machine is used as actual counter.
  • a signal having a value of 0 at the data sending register (12b) represents a condition where a product has not been completed (finished) by a machine (40a, 40b or 40c) while signal of value 1 represents a condition where a product has been completed.
  • the remote terminal unit (10) is programmed in such a manner that if there is no change in status value at the corresponding data sending register (12b) the remote terminal unit (10) will not send any data to the data collecting computer unit (20) . Conversely, if there is a change in the status value at the corresponding data sending register (12b) , the new value will immediately be sent to the data collecting computer unit (20) .
  • the remote terminal unit (10) will act as a web client and accesses a PHP script for processing a form (or a page) already prepared in the web server (26) and provides the name of the corresponding remote terminal unit (10) and the content of the data sending register (12b) undergoing a change as a parameter.
  • the PHP Script will process the content of the data sending register (12b) which it has received and stores the content in the database (22) . Afterwards the PHP script will give a return value to the corresponding remote terminal unit (10) . The return value will be written to the data receiving register (12a) .
  • the return value may, for example, include values used in representing or commanding the turning-on or turning-off of indicator lamps, representing the name of the model currently being processed by the machine, representing actual counter, representing planning counter and so on.
  • the values or these representations could be displayed on a 7-segment display device or a dot-matrix display device (14) .
  • the remote terminal units (10) will then control the operation of their respective industrial machines (40a, 40b or 40c) on the basis of the return value.
  • Incorporating a web protocol in the system according to the present invention allows data acquisition and control system to perform with a good reliability and a good tolerance to any possible interruption in the communication network used in the system. Additionally, using a web protocol allows the data acquisition and control system according to the invention to be deployed from a quite far distance provided there is an internet connection at the sites. Accordingly, the invention is also very suitable for use in a remote sensing context
  • the web protocol that is based on text file allows a standard PLC having an ethernet connection to be programmed and functioned as a web client. Accordingly, various types of PLCs can be connected to the system according to this invention to gain data and thereby act as the remote terminal unit according to the present invention.
  • a remote terminal unit 10 can be attached or installed to it so that the machine or equipment can be connected to this system and thereby data can be obtained from the machine or equipment in a standard form.
  • each remote terminal unit (10) acts as a web client which actively send its data to the web server (26) , and differs from the SCADA system which would normally be carried out in a top-down way because all things should be designed in detail from the start, the present system is now able to be implemented in a bottom- up way, wherein the addition of one or more remote terminal units (10) will be easily handled.
  • the additional remote terminal units (10) Viewing from the data collecting computer unit (20) side of the system, the additional remote terminal units (10) will be regarded as new web clients each with a different machine's or equipment's identification accessing the server (the data collecting computer unit) , sending input data and receiving output data as a reply.
  • the remote terminal unit (10) can be programmed to enable it to send its data to the web server (26) only whenever there is a change in its status (this is different from the conventional SCADA system wherein the server will periodically poll each remote terminal unit) .
  • the use of communication bandwidth becomes efficient, and thus the system still has a high performance even though there are many remote terminal units (10) connected or added to the system.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Selective Calling Equipment (AREA)

Abstract

L'invention concerne un système et un procédé d'acquisition de données par Internet et de leur gestion en vue d'un usage avec des machines, processus et équipements industriels. Dans le système de la présente invention, une unité de terminal distant (10) joue le rôle d'un client web, tandis qu'une unité informatique de collecte de données (20) joue le rôle d'un serveur web. L'unité informatique de collecte de données (20) comprend un serveur web (26), une base de données (22) et un logiciel de traitement d'hypertexte (24). L'unité de terminal distant (10) accède de manière active à l'unité informatique (20) et envoie les données relatives aux conditions d'exploitation d'une machine industrielle à l'unité informatique (20) seulement si un changement intervient dans ces conditions. Ce principe de communication du client et du serveur permet une utilisation efficace de la bande passante de communication pour l'acquisition et la gestion de données. Toutes les nouvelles unités terminales distantes ajoutées au système seront considérées par le système principalement comme de nouveaux clients web avec des identités différentes. Dans ce cas, aucun ajustement ou réglage important ne sera donc nécessaire au niveau de l'unité informatique de collecte de données du système.
PCT/ID2011/000008 2010-12-13 2011-11-30 Système et procédé d'acquisition de données par internet WO2012080995A1 (fr)

Applications Claiming Priority (2)

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ID20100875 2010-12-13
IDP00201000875 2010-12-13

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WO2012080995A1 true WO2012080995A1 (fr) 2012-06-21

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN104950761A (zh) * 2015-06-17 2015-09-30 上海大学 一种炉窑远程监控管理系统
CN108270868A (zh) * 2018-01-25 2018-07-10 上海维宏电子科技股份有限公司 基于Web技术的开放式数控集群控制系统
CN109359205A (zh) * 2018-08-30 2019-02-19 中国农业大学 一种基于地理格网的遥感影像切分方法及设备
CN113741766A (zh) * 2021-11-08 2021-12-03 山东捷瑞数字科技股份有限公司 一种面向网页代码的可视化采集工具

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EP1542105A1 (fr) * 2003-12-09 2005-06-15 Sap Ag Système de commande industrielle et procédé de traitement de données associé
DE102004004344A1 (de) * 2004-01-29 2005-08-25 Abb Research Ltd. System zur Fernüberwachung von Automatisierungsgeräten und -systemen
US20090182440A1 (en) * 2005-12-27 2009-07-16 Siemens Aktiengesellschaft Automation Network, Access Service Proxy for an Automation Network and Method for Transmitting Operating Data Between a Programmable Controller and a Remote Computer

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US5892690A (en) * 1997-03-10 1999-04-06 Purechoice, Inc. Environment monitoring system
US6640140B1 (en) * 2000-10-10 2003-10-28 Schneider Automation Inc. PLC executive with integrated web server
DE10260404A1 (de) * 2002-12-16 2004-07-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. System und Verfahren zur Überwachung von technischen Anlagen und Objekten
EP1542105A1 (fr) * 2003-12-09 2005-06-15 Sap Ag Système de commande industrielle et procédé de traitement de données associé
DE102004004344A1 (de) * 2004-01-29 2005-08-25 Abb Research Ltd. System zur Fernüberwachung von Automatisierungsgeräten und -systemen
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104950761A (zh) * 2015-06-17 2015-09-30 上海大学 一种炉窑远程监控管理系统
CN108270868A (zh) * 2018-01-25 2018-07-10 上海维宏电子科技股份有限公司 基于Web技术的开放式数控集群控制系统
CN108270868B (zh) * 2018-01-25 2020-12-18 上海维宏电子科技股份有限公司 基于Web技术的开放式数控集群控制系统
CN109359205A (zh) * 2018-08-30 2019-02-19 中国农业大学 一种基于地理格网的遥感影像切分方法及设备
CN113741766A (zh) * 2021-11-08 2021-12-03 山东捷瑞数字科技股份有限公司 一种面向网页代码的可视化采集工具

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