Three-component spherical dual-type electric field strength sensor

The article proposes a new design solution for a three-component electroinductive spherical electric field strength sensor with sensitive electrodes in the form of spherical digons and their parts. The sensor is based on a two-component dual-type sensor and a single-component dual-type sensor, the sensitive elements of which are parts of spherical digons organized into spherical segments with an angular size of 0.The sensitive electrodes of the sensor are thirty-six conductive spherical surfaces isolated from each other and from the conductive spherical base of the sensor. The sensitive electrodes are used to form sensitive elements in the form of spherical digons for four dual sensors, two on the x and y coordinate axes, and in the form of spherical segments for one dual sensor along the z coordinate axis. The studies conducted in the work showed that the design dimensions of the sensitive elements of the sensor and the spatial measurement range affect its error caused by the field inhomogeneity. Optimized design dimensions of the sensor's sensitive elements and limited spatial measurement range made it possible to create a sensor with an error from field inhomogeneity in modulus not exceeding an error of ± 0.55 % in the permissible spatial measurement range of 0  a  0.5, which corresponds to a minimum distance to the field source of d = 2R. To ensure such an error and such spatial measurements, the sensor's sensitive elements in the form of spherical digons must have angular dimensions of 0 = 90 º and 01 = 30 º, and in the form of a spherical segment, the angular size must be 0 = 61.5 º. The proposed three-component spherical sensor can form the basis of an industrial frequency electric field strength meter.