Abstract: A parameter measurement unit measures intrinsic parameters of a plurality of used secondary batteries. A degradation degree calculation unit calculates degradation degrees of the plurality of used secondary batteries from the intrinsic parameter. A target degradation degree determination unit determines a target degradation degree from the degradation degrees of the plurality of used secondary batteries. An aging condition determination unit determines aging conditions of the plurality of used secondary batteries using the degradation degrees of the plurality of used secondary batteries and the target degradation degree. The aging processing unit performs aging processing on the plurality of used secondary batteries under the aging condition for each of the plurality of used secondary batteries.

Abstract: A photoelectric sensor module includes a first light emitting element that emits light having a first wavelength, a second light emitting element that emits light having a second wavelength different from the first wavelength, and a light receiving element that receives light emitted from the first light emitting element and reflected by an object and light emitted from the second light emitting element and reflected by the object are mounted on a substrate with linear edges. With respect to a virtual straight line defined on a surface of the substrate, a light emitting portion of the first light emitting element and a light emitting portion of the second light emitting element are line-symmetric, a light receiving portion of the light receiving element is line-symmetric, and a shape of the substrate in plan view is line-symmetric.

Abstract: A heating oximeter includes a heat insulation portion, a heat generation portion including a resistor generating heat by energization, a first temperature detector including a first temperature sensor detecting a temperature of the heat generation portion, an oxygen saturation acquisition assembly including light emitting elements and a light receiving element, and acquiring oxygen saturation in blood optically, and a third temperature detector including a third temperature sensor detecting a temperature of a living body. The heating oximeter is provided by stacking the third temperature detector, the oxygen saturation acquisition assembly, the first temperature detector, the heat generation portion, and the heat insulation portion in this order.

Abstract: A heating oximeter includes a heat insulation portion, a heat generation portion including a resistor generating heat by energization, a first temperature detector including a first temperature sensor detecting a temperature of the heat generation portion, an oxygen saturation acquisition assembly including light emitting elements and a light receiving element, and acquiring oxygen saturation in blood optically, and a third temperature detector including a third temperature sensor detecting a temperature of a living body. The heating oximeter is provided by stacking the third temperature detector, the oxygen saturation acquisition assembly, the first temperature detector, the heat generation portion, and the heat insulation portion in this order.

Abstract: A photoelectric sensor module includes a first light emitting element that emits light having a first wavelength, a second light emitting element that emits light having a second wavelength different from the first wavelength, and a light receiving element that receives light emitted from the first light emitting element and reflected by an object and light emitted from the second light emitting element and reflected by the object are mounted on a substrate with linear edges. With respect to a virtual straight line defined on a surface of the substrate, a light emitting portion of the first light emitting element and a light emitting portion of the second light emitting element are line-symmetric, a light receiving portion of the light receiving element is line-symmetric, and a shape of the substrate in plan view is line-symmetric.