生物医学近场辐射测量装置的研究

The Design of a Device of Measuring Near Field Radiation for Biomedical Usage

在电磁辐射生物医学研究中,被试动物需要放到近场中进行实验。近场是非均匀场,辐射电平很高,特别是脉冲调制的峰值电平极高。为了解决近场场强的测量,作者在对近场辐射测量理论分析基础上,研制了一种近场辐射测量装置。该装置由各向同性响应探头和显示电路组成,它具有高的峰值过载能力和测量精度,较好地解决了连续波、脉冲波近场辐射测量问题,在生物医学工程领域有实际应用价值。

In biomedical researches by electromagnetic radiation experiments, the animals should be placed in the near field (non -uniform field) environment,where in the radiation level is very high and the pulse-modulated peak level extremely high in particular. Based on the theoretical analysis of the near field radiation measurement, we designed a device for measuring its strength. With high accuracy and high peak overload capability, the device consists of an isotropic probe and the display circuitry. It could complete continuous wave and pulse wave measurement. This device has been proved to be of great value to biomedical engineering experiments.