詳情：
技術說明：ABB 3BSEO21180R1 信號調節(jié)板 信號調理器
信號調理器的功能包括:1)信號轉換
信號調理器的主要功能是接收情號并將其轉換成更高電平的電信號。信號轉換通常用于需要多種傳感器進行測量的工業(yè)應用。由于使用的傳感器不同，因此需要轉換為所連接設備能使用的信號，也就是標準過程信號。
2)線性化
當傳感器產性的信號與物理量沒有線性關系時，某些信號得理髏可以實現(xiàn)線性化。這是一個軟件解釋信號的過程，例如熱偶信號。由于每個傳倦器都不可能是完全線性的，所以這種方法可以用來實現(xiàn)更高精度。在傳感器標定及校準過程中，需要對線性化參數(shù)進行評估。
3)放大
下一步是信號放大和處理數(shù)字化信號過程。信號放大的方法有兩種:增加輸入信號的分辨率，或者提高信噪比。
不同用途的信號聞理采用多種不同放大器，為提高精度，好使用直流信號，具有高輸入阻抗、高共模抑制比。(CMRE)，高增益等特性。另外就是采用隔離放大器，一般是用于小的交流或差分信號。
4)濾波
信號調理器的另一個重要功能是濾波，其對信號頻潛進行慮液，只保留有效數(shù)據(jù)并防止噪聲。濾波可以采用無源和有源部件或是數(shù)字算法進行。無源濾波只使用電容、電阻和電感器，其大增益為1，有源族波除了運算放大器和晶體管等有源元件外，還使用無源元件。先進的信號調理器采用數(shù)字濾波，因為它們易于調整，且不需要硬件。數(shù)字濾波器是一種用來處理信號的數(shù)學濾波器，例如阻斷或通過特定的頻率。他們使用的邏輯元件包括ASIC、FPGAs或一個信號處理程序。
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Details:
Technical description: ABB 3BSEO21180R1 signal regulator signal conditioner
The functions of the signal conditioner include :1) signal conversion
The main function of the signal conditioner is to receive the signal and convert it into a higher electrical signal. Signal conversion is often used in industrial applications that require multiple sensors for measurement. Because of the different sensors used, it needs to be converted into a signal that can be used by the connected device, that is, a standard process signal.
2) Linearization
When the signal produced by the sensor has no linear relationship with the physical quantity, some signal theory can be linearized. This is a process in which software interprets signals, such as thermocouple signals. Since every transducer can never be completely linear, this method can be used to achieve higher accuracy. In the process of sensor calibration and calibration, the linearization parameters need to be evaluated.
3) Zoom in
The next step is signal amplification and processing of the digital signal process. There are two ways to amplify a signal: increase the resolution of the input signal, or increase the signal-to-noise ratio.
A variety of different amplifiers are used to detect signals for different purposes. In order to improve accuracy, DC signals are better used, with high input impedance and high common-mode rejection ratio. (CMRE), high gain and other features. The other is the use of isolation amplifiers, generally for small AC or differential signals.
4) Filtering
Another important function of the signal conditioner is filtering, which filters the signal frequency implicitly, retaining only valid data and preventing noise. Filtering can be performed using passive and active components or digital algorithms. Passive filtering uses only capacitors, resistors and inductors, with a large gain of 1, and active family waves use passive components in addition to active components such as operational amplifiers and transistors. Advanced signal conditioners are digitally filtered because they are easy to adjust and do not require hardware. A digital filter is a mathematical filter used to process signals, such as blocking or passing through a specific frequency. The logic components they use include ASics, FPGAs, or a signal processing program.
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