Living body observation system and method of driving living body observation system

A living body observation system comprising,

• a living body information acquiring apparatus including:
• a living body information acquiring section for acquiring living body information in a living body;
• a wireless transmission section for wirelessly transmitting the living body information to outside of the living body;
• a power source section for supplying driving power for driving the living body information acquiring section and the wireless transmission section;
• a magnetic field detecting section for detecting a magnetic field from outside and outputting a detection result as an electric signal;
• and
• a power supply control section for controlling a supplying state of the driving power supplied from the power source section to the living body information acquiring section and the wireless transmission section based on the electric signal;
• and
• a magnetic field generating section disposed outside the living body information acquiring apparatus, the magnetic field generating section including:
• a magnetic field generating coil;
• a driving circuit for outputting a drive signal for driving the magnetic field generating coil;
• a switch for switching between on and off of a generation state of a magnetic field in the magnetic field generating coil;
• and
• a timer for outputting a stop signal for stopping output of the drive signal when a predetermined period has passed following switching from off to on of the switch.