Patent ID: 7907754

Claim:
A biological detection device, comprising: an oscillating portion which oscillates an input voltage having a specific frequency; a plurality of circuit portions each of which is connected to the oscillating portion; a plurality of electrode portions each of which applies the input voltage to a test body; a first circuit combination changing portion that connects the plurality of circuit portions to the plurality of electrode portions; a discriminating portion which discriminates whether the test body is a living body or not, according to an output voltage with respect to the input voltage applied to the test body; and a second circuit combination changing portion that connects the plurality of electrode portions to the discriminating portion; wherein the first circuit combination changing portion changes connection relation between the plurality of circuit portions and the plurality of electrode portions, and outputs the input voltage output from each of the circuit portions to each of the electrode portions, and wherein the second circuit combination changing portion changes connection relation between the plurality of electrode portions and discrimination portion such that all of the output voltages output from plurality of the electrode portions are output in substantial simultaneity, and outputs the output voltage output from each of the electrode portions to the discrimination portion.