【Weekly 3 Questions, Question 11】2017.09.02
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This post was last edited by xh8618 on 2017-9-2 at 13:21: bg9.png (Essay question) Why are DC signal systems commonly used in industrial automation instruments? Note: The answers have been modified from the standard ones as a anti-fraud measure. If hidden answers are copied directly using an app or similar tool, only points will be given to those who participated. Thank you for your participation! The input/output signals of industrial automation instruments are mostly DC signals, which have the following advantages: 1. During the signal transmission process in the instrument, DC signals are not affected by alternating current induction, making it easier to address the issue of interference resistance in such instruments. 2. DC signals are not affected by the inductance and capacitance of the transmission lines, and there is no issue with phase shift, thus simplifying wiring. 3. DC signals are convenient for analog-to-digital and digital-to-analog conversion, thereby enabling instruments to be easily connected to data processing devices, computers, etc. 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator, etc. —————————————————————————————————————————————————————————————— The validity period of the question is one week; no scoring will be given after that time, and the answer will be displayed automatically once the deadline has passed. Scoring criteria: 2 Wealth points for incorrect attempts; 3–6 points for *incomplete* answers; 8 Wealth points for correct answers with detailed explanations; 10–15 Wealth points for correct answers along with supplementary *answers*. Please score according to these criteria. Note: If there are editing records after answering, only those who participated will be given points. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters unrelated to the answer are all considered malicious spamming; points will start to be deducted after three warnings.
The input/output signals of industrial automation instruments are often DC signals, as they offer the following advantages: 1. During the signal transmission process in the instrument, DC signals are not affected by alternating current induction, which makes it easier to address the issue of interference resistance in such instruments. 2. DC signals are not affected by the inductance and capacitance of the transmission lines, and there is no issue with phase shift, thus simplifying wiring. 3. DC signals are easy to convert between analog and digital forms, which enables instruments to be connected easily to data processing devices, computers, etc. 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator.
1. During the signal transmission process of instruments, DC signals are not affected by AC induction, which makes it easier to address the issue of interference resistance in instruments. 2. DC signals are not affected by the inductance and capacitance of the transmission lines, and there is no issue with phase shift, thus simplifying wiring. 3. DC signals are easy to convert between analog and digital forms, which enables instruments to be connected easily to data processing devices, computers, etc. 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator.
1. During the signal transmission process of instruments, DC signals are not affected by AC induction, which makes it easier to address the issue of interference resistance in instruments. 2. DC signals are not affected by the inductance and capacitance of the transmission lines, and there is no issue with phase shift, thus simplifying wiring. 3. DC signals are easy to convert between analog and digital forms, which enables instruments to be connected easily to data processing devices, computers, etc. 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator, etc.
Learning *+ Repetition*: 1. During the signal transmission process in instruments, DC signals are not affected by AC interference, which makes it easier to address the issue of interference resistance in such instruments. 2. DC signals are not affected by the inductance and capacitance of the transmission lines, and there is no issue with phase shift, thus simplifying wiring. 3. DC signals are easy to convert between analog and digital forms, which enables instruments to be connected easily to data processing devices, computers, etc. 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator.
1. During the signal transmission process of instruments, DC signals are not affected by AC induction, which makes it easier to address the issue of interference resistance in instruments； 2. DC signals are not affected by the inductance and capacitance of the transmission lines, and there is no issue with phase shift; therefore, the wiring is simple ； 3. DC signals are convenient for analog-to-digital and digital-to-analog conversion, thereby enabling instruments to be easily connected to data processing devices, computers, etc ； 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator.
During the signal transmission of instruments, DC signals are not affected by AC induction, which makes it easier to address the issue of interference resistance in instruments
Strong anti-interference capability, simple wiring, conducive to signal conversion
1. During the signal transmission process of instruments, DC signals are not affected by AC induction, which makes it easier to address the issue of interference resistance in instruments. 2. DC signals are not affected by the inductance and capacitance of the transmission lines, and there is no issue with phase shift, thus simplifying wiring. 3. DC signals are easy to convert between analog and digital forms, which enables instruments to be connected easily to data processing devices, computers, etc. 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator
1. During the signal transmission process of instruments, DC signals are not affected by AC induction, which makes it easier to address the issue of interference resistance in instruments. 2. DC signals are not affected by the inductance and capacitance of the transmission lines, and there is no issue with phase shift, thus simplifying wiring. 3. DC signals are easy to convert between analog and digital forms, which enables instruments to be connected easily to data processing devices, computers, etc. 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator.
The input/output signals of industrial automation instruments are mostly DC signals； 1. During the signal transmission process of the instrument, DC signals are not affected by AC induction ； 2. DC signals are not affected by the inductance and capacitance of the transmission lines, so such effects do not exist ； 3. DC signals are convenient for analog-to-digital and digital-to-analog conversion, thus making instruments easier to use ； 4. It is easy to obtain a reference voltage for DC signals, such as the setpoint of a regulator