Electric field detector

The electric field detector (20) comprises an electromechanical oscillator, one part of which consists of a piezoelectric element (1), a frequency measuring device (4) coupled to the oscillator to measure the oscillation frequency, and an electrical masking assembly (5). The electrical masking assembly is arranged close to the piezoelectric element (1) such that during use of the detector, the piezoelectric element moves by vibrating relative to the electrical masking assembly. Thus, a variable portion of the piezoelectric element is exposed to an electric field to be measured. The change in the oscillation frequency (f) then forms an electric field measurement. 电场检测器(20)包括机电振荡器，所述机电振荡器的一部分由压电元件(1)、耦合到所述振荡器以测量振荡频率的频率测量装置(4)和电气掩蔽组合件(5)组成。所述电气掩蔽组合件靠近所述压电元件(1)布置，使得在使用所述检测器期间，所述压电元件通过相对于所述电气掩蔽组合件振动而移动。因此，所述压电元件的可变部分暴露于待测量电场。所述振荡频率(f)的变化随后形成电场测量结果。