
[電][自] 電容傳感器;電容變換器;電容式轉換器;[電][自] 電容式傳感器
In this paper, we described a bubble level which was improved by using a kind of capacitive transducer.
本文介紹了利用電容傳感原理研制的電容式氣泡水準器。
Based on theoretic analysis, some improvement in the structure of the disk capacitive transducer is made to advance its measuring precision.
文章在理論分析基礎上,對圓容栅傳感器結構進行了改進,探索進一步提高其測量精度的途徑。
We describe a new ultrasonic sensing technique which uses broadband and noncontact capacitive transducer to generate or receive ultrasonic waves.
我們介紹了一種新穎的超聲波檢測技術,它用寬帶,非接觸的電容換能器實現超聲波的激發或接收。
The construction of the capacitive transducer, the basic structure of the system and the special anti-interference method, are mainly introduced.
重點介紹了電容式傳感器的結構、系統的組成和抗工頻幹擾的措施。
The work rules of capacitive transducer electronic digital display calipers are analyzed, and the interface project for PIC microcomputer system.
分析了光栅式數顯尺的工作原理,并給出了同PIC單片機的接口方案。
The comb-shaped capacitive transducer, as example, illustrates the application of this method.
本文以梳齒形電容式傳感器為例,來說明此方法的運用。
These advantages have made the capacitive transducer a valuable device for measurement of engine cylinder pressures.
這些優點已使得電容式傳感器成為測量發動機汽缸壓力的有效的裝置。
The driving cable was used for this purpose to connect a capacitive transducer located at a distance of 100 to 1000 meters away.
這種新技術應用在泥石流研究工作中,要求能在100至1000公尺的遠距離直接傳遞電容傳感器參數的訊息。
The principle and characteristic of capacitive displacement transducer are introduced.
簡單介紹了容栅位移傳感器的工作原理和技術特點。
This paper uses the equivalent-circuit way to study the mathematical model of capacitive grate transducer.
該文采用等效電路法研究了容栅傳感器的數學模型。
Capacitive pressure difference sensor is fixed in the center of the tube and connected with the pulse width modulation circuit so that capacitive flow transducer is made up.
把電容式差壓傳感器固定在管道中央,并配接脈沖調寬電路,即構成電容式流速變送器。
A new method for realizing the temperature compensation of capacitive pressure transducer based on radial basis function (RBF) neural network is proposed.
提出了一種基于徑向基函數(RBF)神經網絡的電容式壓力傳感器溫度補償方法。
In this paper, the principle of the capacitive grate transducer for large displacement is analyzed, and more reasonable equivalent circuit and formula of theoretic nonlinear error are presented.
從理論上分析了容栅傳感器的工作原理及其理論非線性誤差,提出了較為合理的等效電路和理論非線性誤差表達式。
The capacitive gate transducer has several kinds of exciting voltage forms that affect its performances greatly. But this problem is investigated little.
容栅傳感器激勵電壓形式有若幹種,對性能指标有較大影響,但人們對此很少研究。
The research includes the following five subjects: 1. The qualitative analysis of the edge effect in flat capacitive displacement transducer and the nonlinear influence in output characteristics; 2.
課題主要的研究工作内容有:1。對平闆式電容傳感器的邊緣效應及其對輸出特性的非線性影響進行定性分析;
Thedesign is a closed loop control system that consists of a linear DC motor drived by LMD18245, a linear capacitive grid displacement transducer and a digital PID controller.
該方案是一個由LMD18245芯片控制的直流直線電機,直線型容栅位移傳感器以及數字PID控制算法構成閉環控制系統。
Implementations include a capacitive micromachined ultrasonic transducer (CMUT) having an additional transducing device overlaid in a vertically stacked relationship.
實現包括電容式微機械超聲換能器(CMUT),其具有以垂直疊層關系覆蓋的額外換能設備。
Based on the experimental study of angular-position transducer, a smart capacitive angular-position transducer is presented.
通過對一般角位移變送器的研究,詳細闡述了一種新型電容角位移變送器。
A capacitive sensor is disclosed that includes a variable capacitor transducer which varies its capacitance with changes in an environmental parameter.
電容式傳感器是将被測的非電量變化轉換為電容量變化的一類傳感器,它廣泛應用在壓力、濕度、溫度和加速度等測量中。
A Rogowski coil and a capacitive voltage divider are used as current sensor and voltage sensor respectively in the transducer and optic fibers are used to transmit signal.
該互感器以羅柯夫斯基線圈作為電流傳感元件,以電容分壓器作為電壓傳感元件,以光纖作為信號傳輸通道,借助有源電子調制和信號處理技術實現電流、電壓的測量。
電容式傳感器(Capacitive Transducer)是一種将物理量變化(如位移、壓力、濕度等)轉換為電容值變化的電子測量裝置。其核心原理基于平行闆電容器的基本公式:
$$ C = frac{varepsilon_0 varepsilon_r A}{d} $$
其中:
通過改變公式中的任一參數($A$、$d$ 或 $varepsilon_r$),即可實現物理量到電信號的轉換。其典型工作模式包括:
變間距型
外力改變極闆距離$d$,電容與距離成反比。適用于微位移測量(如振動傳感器),靈敏度高但非線性明顯。工業級産品精度可達納米級(如Keysight精密測頭)。
變面積型
機械運動使極闆重疊面積$A$變化,電容與面積成正比。常見于角度/位置傳感器(如汽車油門踏闆位置檢測),具有線性輸出特性。
變介電常數型
介質成分變化引起$varepsilon_r$改變。用于液位計(如化工儲罐液位監控)或成分分析儀(糧食水分檢測),需考慮介質損耗補償技術。
技術優勢與典型應用
權威研究指出,現代電容傳感器通過差動結構、屏蔽環設計及ASIC信號處理電路,可有效抑制寄生電容幹擾,溫度漂移可控制在0.05%/℃以内(IEEE傳感器期刊,2019)。在生物醫學領域,其非侵入特性使其成為植入式血壓監測器的理想選擇(ScienceDirect生物工程綜述。
注:實際應用中需注意電磁屏蔽、濕度補償及線性化校正等關鍵技術點。具體設計規範可參考IEC 61000-4電磁兼容标準。
Capacitive Transducer(電容式傳感器) 是一種通過電容變化來檢測物理量(如壓力、位移、濕度等)并将其轉換為電信號的裝置。以下是詳細解釋:
組合後,電容式傳感器通過檢測電容變化來測量目标物理量。
電容式傳感器的核心是電容器,其電容公式為: $$ C = frac{varepsilon A}{d} $$ 其中:
當被測物理量(如壓力)改變$d$、$A$或$varepsilon$時,電容值隨之變化,進而轉換為電壓或頻率信號輸出()。
如需進一步了解具體類型(如壓力、溫度傳感器),可參考來源中的詞典釋義或技術文檔()。
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