शैडोइंग अभ्यास: What is SCADA? - वीडियो के साथ अंग्रेजी बोलना सीखें
पाठ बनाया जा रहा है...
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The SCADA acronym stands for Supervisory Control and Data Acquisition.
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When considering this term, you can conjure varying images, and you should.
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A SCADA system is a collection of both software and hardware components that allows supervision and control of plants, both locally and remotely.
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The SCADA also examines, collects, and processes data in real time.
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Human-Machine Interface or HMI software facilitates interaction with field devices such as pumps,
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valves, motors, sensors, etc. Also within the SCADA software is the ability to log data for historical purposes.
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The structural design of a standard SCADA system starts with Remote Terminal Units or RTUs and or Programmable Logic Controllers or PLCs.
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As you know, RTUs and PLCs are microprocessors that communicate and interact with field devices such as valves,
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pumps, and HMIs.
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That communication data is routed from the processors to the SCADA computers, where the software interprets and displays the data,
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allowing for operators to analyze and react to system events.
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Before SCADA, plant personnel had to monitor and control industrial processes via selector switches,
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push buttons, and dials for analog signals.
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This meant that plants had to maintain personnel on-site during production in order to control the processes.
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As manufacturing grew and sites became more remote in nature, relays and timers were used to assist in the supervision and control of processes.
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With these devices employed, fewer plant personnel were required to be on site in order to oversee and control operations.
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While relays and timers did provide some level of automation, the panels required for these devices took up valuable real estate.
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Troubleshooting was a nightmare, and reconfiguring was difficult at best.
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These issues, in conjunction with the need to grow even larger industrial plants, helped to facilitate the birth of automation.
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As you may know from previous videos, controlling industrial plants via processors became a reality in the 1950s.
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Gas and oil, utilities, and manufacturing were major users of these new technologies and supervisory control.
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About a decade later, telemetry came on the scene to offer even more remote capabilities with automated communication
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and data transmission to remote monitoring locations.
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Another decade later, the term SCADA was used to describe systems with PLCs
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and microprocessors that were being used for the monitoring and control of automated processes on an even greater scale than ever before.
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SCADA, back then, was anything but practical.
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They were colossal machines, mainframes really, and since networking was not yet in the picture, they were standalone units.
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In the next couple of decades, the 80s and 90s, with computer systems getting smaller,
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the advent of local area networking or LAN and HMI software, SCADA systems were able to connect to related systems.
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Unfortunately though, the communications were typically proprietary, which meant that connections outside of the particular vendor of the SCADA system were not allowed.
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This early SCADA was coined distributed SCADA systems.
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Later in the 90s and 2000s, SCADA began to implement open system architectures with communication protocols that were not vendor specific.
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As you can imagine, this opened up SCADA's ability to connect with varying vendors.
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This newer, more improved SCADA was then called a networked SCADA system.
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Newer and improved SCADA unfortunately didn't last long.
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With computer technology growing rapidly, IT development quickly gathered steam.
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The default database for IT became Structure Query Language or SQL databases.
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SCADA developers didn't implement these standard databases, so SCADA became out of date rather quickly when other technologies so rapidly changed.
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Current-day SCADA systems have adapted to the changing technologies and have a great advantage over the older SCADA systems.
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With the adoption of modern IT standards such as SQL and web-based applications,
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today's SCADA allows for real-time plant information to be accessed from anywhere around the world.
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Having this data at the operator's fingertips facilitates improved plant operations,
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allowing for responses to SCADA system queues based on field collected data and system analysis.
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These operator interactions can be from a computer right on the
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plant floor to an office building in some other region in the world.
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Advancing technologies have indeed made the world seem like a very small place, relatively speaking.
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And because the current SCADA system software has typically adopted the SQL database model,
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historical collection of data may be logged and used in trending applications to further improve plant processes,
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as well as creating mandated record keeping for some of the industries out there.
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Essentially, SCADA is a collection of hardware
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and software This collection of components begins with real-time data collected from plant floor devices such as pumps, valves, and transmitters.
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These components don't have to be from a particular vendor, they just need to have a communication protocol that the processor can utilize.
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Data collected from the field devices is then passed to the processors such as PLCs.
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From the processor, the data is distributed to a system of network devices.
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These devices may be HMIs, end-user computers, and servers.
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On the HMI and end-user computer, graphical representations of the operations exist for operator interactions,
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such as running pumps and opening valves.
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This data may also be analyzed and used to enhance plant production and troubleshoot problems problems.
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Want to learn PLC programming in an easy to understand format and take your career to the next level?
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Head on over to realpars.com
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इस पाठ की शब्दावली और बोलने के सुझाव
इस वीडियो में शैडोइंग के लिए 64 वाक्य और 938 शब्द हैं। बोला गया हिस्सा 7:39 लंबा है। वक्ता लगभग 123 शब्द प्रति मिनट की स्थिर गति से बोलता है, जो शैडोइंग के लिए आरामदायक है। केवल 75% शब्द अंग्रेज़ी के 3,000 सबसे आम शब्दों में से हैं, इसलिए शब्दावली कठिन है।
इस वीडियो की मुख्य शब्दावली
वीडियो के 15 कम प्रचलित शब्द, उच्चारण और अर्थ के साथ:
- remote /ɹəˈməʊt̞/ (विशेषण) — दूर, दूरस्थ. At a distance; disconnected.
- collect /ˈkɑlɪkt/ (क्रिया) — शामिल होने, इकट्ठा करना. To gather together; amass.
- database /ˈdeɪtəˌbeɪs/ (संज्ञा) — डेटाबेस. A collection of (usually) organized information in a regular structure, usually but not necessarily in a machine-readable format accessible by a computer.
- pump /pʌmp/ (संज्ञा) — पंप, पम्प. A device for moving or compressing a liquid or gas.
- valve /ˈvælv/ (संज्ञा) — वाल्व. A device that controls the flow of a gas or fluid through a space, such as a pipe, manifold, or plenum.
- monitor /ˈmɑ.nɪ.tɚ/ (संज्ञा) — पर्यवेक्षक. Someone who watches over something; a person in charge of something or someone.
- operator /ˈɑpəˌɹeɪtɚ/ (संज्ञा) — संचालक. A person or organisation that operates a device, system, service, etc.
- hardware /ˈhɑɹdˌwɛɹ/ (संज्ञा) — हार्डवेयर. Fixtures, equipment, fasteners, tools, and devices used for general-purpose construction and repair of a structure or object. Also such equipment as sold as…
- supervision /ˌs(j)uːpəˈvɪʒən/ (संज्ञा) — पर्यवेक्षण. The act or instance of supervising.
- analyze /ˈæn.əˌlaɪz/ (क्रिया) — विश्लेषण करना. To subject to analysis.
- automation /ˌɔ.təˈmeɪ.ʃən/ (संज्ञा) — स्वचालन. The act or process of converting the controlling of a machine or device to a more automatic system, such as computer or electronic controls.
- practical /ˈpɹæk.tɪ.kəl/ (विशेषण) — प्रायोगिक. Relating to, or based on, practice or action rather than theory or hypothesis.
- server /ˈsɝvɚ/ (संज्ञा) — सर्वर. A program that provides services to other programs or devices, either in the same computer or over a computer network.
- architecture /ˈɑː.kɪˌtɛk.t͡ʃə/ (संज्ञा) — वास्तुकला, स्थापत्य. The art and science of designing and managing the construction of buildings and other structures, particularly if they are well proportioned and decorated.
- log /lɔɡ/ (संज्ञा) — कुंदा, लट्ठा. The trunk of a dead tree, cleared of branches.
वीडियो में आने वाली फ़्रेज़ल वर्ब
- come on /ˌkʌm ˈɒn/ — चलो. Come along with me; join me in going.
ध्यान देने योग्य उच्चारण
वक्ता 3 बार संक्षिप्त रूपों का प्रयोग करता है, जैसे didn't, don't। इन्हें वैसे ही छोटा बोलें जैसा आप सुनते हैं।
- “sh” और “zh” की ध्वनियाँ: interaction /ˌɪn.təˈɹæk.ʃən/, supervision /ˌs(j)uːpəˈvɪʒən/, automation /ˌɔ.təˈmeɪ.ʃən/, essentially /ɪˈsɛnʃəli/, representation /ˌɹɛp.ɹə.zɛnˈteɪ.ʃən/
- लंबे शब्द — बलाघात सही रखें: operator /ˈɑpəˌɹeɪtɚ/, interaction /ˌɪn.təˈɹæk.ʃən/, facilitate /fəˈsɪlɪteɪt/, supervision /ˌs(j)uːpəˈvɪʒən/, automation /ˌɔ.təˈmeɪ.ʃən/
इस वीडियो से अभ्यास कैसे करें
- पहले बिना बोले पूरा वीडियो एक बार सुनें और जो शब्द नहीं आते उन्हें लिख लें।
- सामान्य गति पर एक-एक वाक्य की शैडोइंग करें और हर वाक्य तब तक दोहराएँ जब तक आपकी लय वक्ता से न मिल जाए।
- अपनी आवाज़ रिकॉर्ड करें और मूल से तुलना करें, ख़ासकर remote, collect, database जैसे शब्दों पर ध्यान दें।
इस वीडियो का व्याकरण
वक्ता जिन संरचनाओं का सबसे अधिक प्रयोग करता है, वीडियो के असली शब्दों के साथ:
| संरचना | वीडियो में |
|---|---|
| Passive voice be + past participle — ज़ोर इस पर कि क्या होता है, न कि कौन करता है | is routed · were required · were not allowed |
| Present perfect have/has + past participle — बीता हुआ काम जिसका असर अभी भी है | have adapted · have indeed made |
शैडोइंग तकनीक क्या है?
शैडोइंग (Shadowing) एक विज्ञान-समर्थित भाषा सीखने की तकनीक है जो मूल रूप से पेशेवर दुभाषिया प्रशिक्षण के लिए विकसित की गई थी। विधि सरल लेकिन शक्तिशाली है: आप मूल अंग्रेज़ी ऑडियो सुनते हैं और तुरंत इसे ज़ोर से दोहराते हैं — जैसे वक्ता की छाया 1-2 सेकंड की देरी से। शोध से पता चलता है कि यह उच्चारण सटीकता, स्वर, लय, जुड़ी हुई ध्वनियाँ, सुनने की समझ और बोलने की प्रवाहशीलता में काफ़ी सुधार करता है।