Abstract: A biological information output device outputs: information about a distance to a living body obtained by processing an I signal obtained by multiplying a signal of an electromagnetic wave and a signal of a reflected wave of the electromagnetic wave reflected on the living body and a Q signal obtained by delaying the I signal by a predetermined phase; a reception intensity of the reflected wave using a diameter of a circle drawn by a signal point obtained by developing the I signal and the Q signal on a complex plane; and a phase change amount of the reflected wave using a displacement angle of a range where the signal point is displaced on the circle with respect to a center of the circle. The device determines a type of the living body based on the distance, the reception intensity, and the phase change amount.

Abstract: A biological information output device eliminates data having a value equal to or greater than a predetermined value from data obtained from an electromagnetic wave reflected on a body surface and acquires data having a value less than the predetermined value; specifies a frequency peak in a predetermined period of the acquired data; creates a histogram by adding an occurrence frequency at which the frequency peak appears for each different class as a frequency while defining a prescribed frequency range where the specified frequency peak exists as one class; and determines, when a frequency of a class having the frequency which is a maximum occurrence frequency among classes in the histogram exceeds a predetermined threshold value, the class as an initial value of biological information. The biological information output device extracts the biological information from the data based on a cycle specified by the determined initial value.

Abstract: An electric wave type biosensor includes: an electromagnetic wave irradiation unit; and a reflected wave receiving unit which receives a reflected wave and obtains an I signal obtained by multiplying the irradiated electromagnetic wave signal and the received reflected signal, and a Q signal obtained by delaying the I signal only by a predetermined phase. The electric wave type biosensor further includes: a differentiation calculation unit which differentiates the I signal and the Q signal and calculates an I signal differential value and a Q signal differential value; and an angular velocity calculation unit which calculates an angular velocity of the I signal and the Q signal, based on the I signal and the Q signal and the I signal differential value and the Q signal differential value.

Abstract: A biological information detection device is installed in equipment including a body support portion, and detects biological information of a user of the equipment. The device includes: a detection unit including: a transmitter which transmits a radio wave toward a part of the body supported by the body support portion; and a receiver which receives a reflected wave obtained as the radio wave transmitted by the transmitter and then reflected on a part of the body; and a detection support portion which forms a part of the body support portion, and which supports a part of the body to which the transmitter transmits the radio wave. Hardness with respect to a part of the body at the detection support portion is softer than hardness with respect to a part of the body at the body support portion excluding the detection support portion.

Abstract: An electric wave type biosensor includes: an electromagnetic wave irradiation unit; and a reflected wave receiving unit which receives a reflected wave and obtains an I signal and a Q signal. The electric wave type biosensor further includes: an I-Q norm angular velocity calculation unit which calculates an angular velocity and an IQ norm of the I signal and the Q signal, based on the I signal and the Q signal; a bio-information extract unit which extracts bio-information of the living body, based on the calculated angular velocity; and an output determination unit which determines whether the bio-information extracted by the bio-information extract unit is to be output based on whether a size of the calculated angular velocity is within a first threshold value.

Abstract: An electric wave type biosensor includes: an electromagnetic wave irradiation unit; and a reflected wave receiving unit which receives a reflected wave and obtains an I signal obtained by multiplying the irradiated electromagnetic wave signal and the received reflected signal, and a Q signal obtained by delaying the I signal only by a predetermined phase. The electric wave type biosensor further includes: a differentiation calculation unit which differentiates the I signal and the Q signal and calculates an I signal differential value and a Q signal differential value; and an angular velocity calculation unit which calculates an angular velocity of the I signal and the Q signal, based on the I signal and the Q signal and the I signal differential value and the Q signal differential value.

Abstract: An object detector for a vehicle transmits a beam of electromagnetic waves forward to scan a target area, receives reflected waves from an object in front, and detects the object from received signals. Received signals are cumulatively added up for each of areas into which the target area is divided. Noise is removed from obtained data by time series filtering. If the value of a peak in data is less than that of the corresponding peak obtained in the previous scan by more than a specified value, such data are considered as an after image and not detected as an object.