Information processing apparatus, information processing method, and information processing program

An information processing apparatus, comprising:

• a transmission coefficient calculator that calculates a transmission coefficient from a time waveform of a transmitted wave that is transmitted through a region in a medium and received by a receiver that receives the transmitted wave, the transmitted wave being from among incident waves that are transmitted by a transmitter that transmits an electric signal including the incident wave to one of a pair of probes each including an antenna, the region in the medium being situated between probes of the pair of probes;
• a propagation time calculator that
• calculates a propagation time and a signal intensity of the transmitted wave, and
• calculates a signal intensity A and a time t1m_S21 at a peak of a desired wave;
• a reflection coefficient calculator that calculates a reflection coefficient from a time waveform of a reflected wave that is received by the receiver, the reflected wave being obtained by the incident wave being reflected off the one of the pair of probes;
• a going-and-returning time calculator that
• calculates a going-and-returning time and a signal intensity of the reflected wave, and
• calculates a signal intensity and a time t1m_S11 at a peak of the reflected wave;
• a propagation-delay-time calculator that calculates a propagation delay time tpd1 that is a difference between the time t1m_S21 at the peak of the desired wave and the time t1m_S11 at the peak of the reflected wave, the propagation delay time tpd1 being obtained by subtracting the time t1m_S11 from the time t1m_S21;
• a moisture amount converter that
• converts the propagation delay time tpd1 into a moisture amount in the medium using a coefficient that represents a relationship between the moisture amount and the propagation delay time, and
• chronologically records the obtained moisture amounts in a memory;
• and
• a moisture amount outputting section that chronologically displays, on a display apparatus, a history of the moisture amounts chronologically recorded in the memory.

An information processing method, comprising:

• calculating a transmission coefficient from a time waveform of a transmitted wave that is transmitted through a region in a medium and received by a receiver that receives the transmitted wave, the transmitted wave being from among incident waves that are transmitted by a transmitter that transmits an electric signal including the incident wave to one of a pair of probes each including an antenna, the region in the medium being situated between probes of the pair of probes;
• calculating a propagation time and a signal intensity of the transmitted wave;
• calculating a signal intensity A and a time t1m_S21 at a peak of a desired wave;
• calculating a reflection coefficient from a time waveform of a reflected wave that is received by the receiver, the reflected wave being obtained by the incident wave being reflected off the one of the pair of probes;
• calculating a going-and-returning time and a signal intensity of the reflected wave;
• calculating a signal intensity and a time t1m_S11 at a peak of the reflected wave;
• calculating a propagation delay time tpd1 that is a difference between the time t1m_S21 at the peak of the desired wave and the time t1m_S11 at the peak of the reflected wave, the propagation delay time tpd1 being obtained by subtracting the time t1m_S11 from the time t1m_S21;
• converting the propagation delay time tpd1 into a moisture amount in the medium using a coefficient that represents a relationship between the moisture amount and the propagation delay time;
• chronologically recording the obtained moisture amounts in a memory;
• and
• chronologically displaying, on a display apparatus, a history of the moisture amounts chronologically recorded in the memory.

An information processing program that causes a processor of an information processing apparatus to operate as a transmission coefficient calculator, a propagation time calculator, a reflection coefficient calculator, a going-and-returning time calculator, a propagation-delay-time calculator, a moisture amount converter, and a moisture amount outputting section,

• the transmission coefficient calculator calculating a transmission coefficient from a time waveform of a transmitted wave that is transmitted through a region in a medium and received by a receiver that receives the transmitted wave, the transmitted wave being from among incident waves that are transmitted by a transmitter that transmits an electric signal including the incident wave to one of a pair of probes each including an antenna, the region in the medium being situated between probes of the pair of probes,
• the propagation time calculator calculating a propagation time and a signal intensity of the transmitted wave,
• the propagation time calculator calculating a signal intensity A and a time t1m_S21 at a peak of a desired wave,
• the reflection coefficient calculator calculating a reflection coefficient from a time waveform of a reflected wave that is received by the receiver, the reflected wave being obtained by the incident wave being reflected off the one of the pair of probes,
• the going-and-returning time calculator calculating a going-and-returning time and a signal intensity of the reflected wave,
• the going-and-returning time calculator calculating a signal intensity and a time t1m_S11 at a peak of the reflected wave,
• the propagation-delay-time calculator calculating a propagation delay time tpd1 that is a difference between the time t1m_S21 at the peak of the desired wave and the time t1m_S11 at the peak of the reflected wave, the propagation delay time tpd1 being obtained by subtracting the time t1m_S11 from the time t1m_S21l,
• the moisture amount converter converting the propagation delay time tpd1 into a moisture amount in the medium using a coefficient that represents a relationship between the moisture amount and the propagation delay time,
• the moisture amount converter chronologically recording the obtained moisture amounts in a memory,
• the moisture amount outputting section chronologically displaying, on a display apparatus, a history of the moisture amounts chronologically recorded in the memory.