SYSTEMS AND METHODS FOR DETECTING PHYSICAL CHANGES WITHOUT PHYSICAL CONTRACT

Systems and methods are provided for detecting and analyzing changes in a body. For example, a system includes an electric field generator configured to produce an electric field. The system includesan external sensor device configured to detect physical changes in the electric field, where the physical changes affect amplitude and frequency of the electric field. The system includes a quadraturedemodulator configured to detect changes of the frequency of the output of the electric field generator. The system includes an amplitude reference source and an amplitude comparison switch configured to detect changes of the amplitude of the output of the electric field generator. The system includes a signal processor configured to analyze the changes of the amplitude and frequency of the output of the electric field generator. 提供了用于检测和分析主体的变化的系统和方法。例如，种系统包括被配置为产生电场的电场发生器。该系统包括被配置为检测电场中的物理变化的外部传感器设备，其中所述物理变化影响电场的幅度和频率。该系统包括被配置为检测电场发生器的输出的频率的变化的正交解调器。该系统包括被配置为检测电场发生器的输出的幅度的变化的幅度参考源和幅度比较开关。该系统包括被配置为分析电场发生器的输出的幅度和频率的变化