1. A human interface system using a plurality of sensors, comprising: at least two kinds of sensors, each determining a range of a detection target and a detection sensitivity and acquiring a particular detection signal from the detection target at the detection sensitivity, the detection signals acquired by the sensors being of different types; a total analyzing part for investigating whether or not there is inconsistency among signal detection results obtained by the respective sensors, and generating control information to the respective sensors; an application utilizing the signal detection results obtained by the respective sensors; and communication units for communicating data and control information between the respective sensors, between the respective sensors and the total analyzing part, and between the total analyzing part and the application, wherein each of the sensors uses either of or a combination of the signal detection results or control information obtained from the other sensors, and the control information obtained from the total analyzing part, thereby determining a range of a detection target and a detection sensitivity at a time of subsequent signal acquisition, each of the sensors outputs its signal detection results and control information used by the other sensors for determining a range of a detection target and a detection sensitivity at a time of subsequent signal acquisition, to the other sensors through the communication units, and the total analyzing part outputs control information used by each of the sensors for determining a range of a detection target and a detection sensitivity at a time of subsequent signal acquisition through the communication units.