Understanding of the process for measuring and displaying process parameters
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Can the understanding of the process parameters measurement and display process be uniformly represented by the schematic diagram below? The sensor is inserted into the process pipeline and powered (in other words, connected to the circuit); it converts the process parameters into electrical current signals. These current signals are sent to the display instrument, which then, using some unknown module, converts those current signals back into process parameter values that are displayed on the screen Did the entire process go through two reverse transformations?
What major did you switch from? It’s just a modulo conversion; as for what value is displayed, it depends entirely on how the range is handled. It can only be considered a change in numerical value, not a change in various aspects of the signal.
Current is converted into a temperature value for display; current is a continuously varying quantity, which is an analog signal, and temperature is also continuously varying and thus an analog signal as well. So what is the need for analog-to-digital conversion?
1. Electrical signals such as current and voltage, which cannot be seen with the naked eye, are called analog quantities. 2. Temperature values like 123°C or 234°C – these measurable numbers are called digital quantities. 3. To go deeper into this topic, whenever you use digital instruments to measure something, no signal is continuous; everything is discrete. . . Electronic molecules exist as individual particles, and seawater also consists of individual particles. . . What is called continuity is merely your eyes lacking sufficient sharpness. . . Just as the world is colorful, and you happen to be color-blind. Hehe, if you want to enjoy the bright flowers with their lush green leaves and faded petals, it’s the fault of the art academy for not being fair.
4. How do sensors convert physical parameters into electrical signals? And how are those electrical signals received and then converted into digital values? You can simply ignore all of this. It’s great to be color-blind, illiterate, or a thug – it’s really enjoyable. For example, breeding pigs lead the most happy, happiest lives of all
5. What is transformation? What is a module? When faced with complex issues that are hard to understand, one should learn from pigs: think with a hammer, act with a hammer, and free the pig’s brain.
This post was last edited by t3t on 2018-9-27 23:35. 6. Do you know why there are fewer and fewer male tigers and lions? Do you know why pigs are increasing in number and thriving? Have you guys studied this matter? I have. As for the reason, it’s very simple: pigs, along with hammers, are efficient and effective at causing trouble. They also give birth to over a dozen pups per litter. Tigers and lions, oh – it takes hundreds of attempts, and one gets exhausted to the point of pain, just to give birth to a little lion cub. The hammer is too clumsy.
What enters is an electric current, an analog signal, which inside the module is converted into digital signals such as 0101 that can be recognized by the CPU. You think the temperature display shows a continuous value, but in reality it depends merely on how fine the steps are. Moreover, the examples you gave are not appropriate; temperature sensors commonly include thermocouples and thermal resistors. One of these detects voltage signals, while the other detects resistance signals. Only if an additional transmitter is used will these signals be converted into current signals.
This post was last edited by jmdc on 2018-9-28 at 14:52. Was the following process carried out within the IO module?
You’re really wordy. If someone asks a question, you can choose whether to answer or not; just leave it alone