新型三维电场传感器原理及试验结果

Principle of a Novel Three Dimension Electric Field Sensor and Its Test Result

目前电场传感器只能探测电场强度矢量一维或者二维方向分量,尚无法精确地反映空中及地面电场强度大小。本文介绍一种新型三维电场传感器,由轴向、径向电场测量单元、驱动单元、电路单元、保温单元组成,用于探测空中及地面环境电场强度的三维方向矢量,克服了目前电场传感器探测电场强度时局限在一维或二维方向矢量的缺陷。在高空低温环境模拟试验中,当环境温度降到-50℃以下时,该传感器的保温单元使传感器内部温度一直处于零上,符合了电路板工作温度范围。在实际电场测试试验中,该传感器的电场测量单元验证了输出信号与电场之间的线性关系,与理论分析相符,证明了三维电场传感器的合理性。

Electric field sensors used at present are only capable of measuring one or two dimension values of electric field intensity vector, which results in an inaccuracy of measurement. A novel three dimension electric field sensor, which is composed of axial（Z） and radial（X, Y） electric field measuring units, driving unit, circuit unit and heat preserving unit, is introduced. It is used for measuring three dimension values of electric field intensity vector, avoiding the limitation of the electric field sensors used at present. The heat preserving unit keeps the temperature inside the sensor higher than 0℃ under the environment temperature of -50℃ in the temperature test, satisfying the temperature range required. Also, the electric field measuring units of sensor validated the linearity of the output signal of sensor and electric field intensity in the test, which is in accord with the theoretical analysis, and proved the rationality of three dimension electric field sensor.