Biological information detection device

A biological information detection device comprising:

• a characteristic acquisition unit configured to acquire a frequency characteristic indicating a relation between a frequency and an intensity with respect to each of a plurality of biological signals input respectively from a plurality of biological activity sensors arranged at a plurality of positions different from each other to detect a biological activity of a person;
• a synthesis unit configured to obtain a synthetic frequency characteristic indicating the relation between the frequency and the intensity by synthesizing a plurality of frequency characteristics acquired by the characteristic acquisition unit from the plurality of biological signals;
• a calculation unit configured to calculate biological information on the biological activity, based on the synthetic frequency characteristic obtained by the synthesis unit;
• and
• a behavior weight calculation unit,
• wherein:
• the plurality of biological activity sensors are mounted on a vehicle that is provided with a vehicle behavior sensor to output a behavior signal according to a traveling behavior of the vehicle;
• the behavior weight calculation unit is configured to calculate a weight according to the behavior signal with respect to the frequency characteristic of each of the plurality of biological signals;
• and
• the synthesis unit is configured to obtain the synthetic frequency characteristic by synthesizing the plurality of frequency characteristics acquired by the characteristic acquisition unit from the plurality of biological signals in a state of reflecting a plurality of weights calculated by the behavior weight calculation unit with respect to the plurality of biological signals.

A biological information detection device comprising:

• one or more than one processor communicably coupled to a plurality of biological activity sensors arranged at a plurality of positions different from each other to detect a biological activity of a person, the processor being configured to:
• acquire a plurality of frequency characteristics respectively corresponding to a plurality of biological signals input respectively from the plurality of biological activity sensors, each of the plurality of frequency characteristic indicating a relation between a frequency and an intensity with respect to each of the plurality of biological signals;
• obtain a synthetic frequency characteristic indicating the relation between the frequency and the intensity by synthesizing the plurality of frequency characteristics acquired from the plurality of biological signals;
• calculate biological information on the biological activity, based on the synthetic frequency characteristic,
• wherein:
• with respect to each of the plurality of biological signals input respectively from the plurality of biological activity sensors in a predetermined time interval, the processor is further configured to acquire each of the frequency characteristics indicating the relation between the frequency and the intensity in the time interval by converting a time waveform indicating a time-course change in the intensity in the time interval;
• with respect to each of the plurality of frequency characteristics in the time interval of each of the plurality of biological signals, the processor is further configured to calculate a time-course change amount in the intensity specific to each of frequencies based on each of the plurality of frequency characteristics indicating the relation between the frequency and the intensity in a period other than the time interval of each of the plurality of biological signals, and calculate a plurality of weights each of which is specific to each of frequencies according to the calculated time-course change amount;
• and
• the processor is further configured to obtain the synthetic frequency characteristic by synthesizing the plurality of frequency characteristics acquired from the plurality of biological signals in a state of reflecting the plurality of weights respectively corresponding to the plurality of biological signals.