A biological information processing device, a biological information processing system, and a biological information processing method which are capable of obtaining features of signals detected from a living body in real time are provided. The present technology provides a biological information processing device including an extraction unit that extracts a component signal corresponding to a physiological index from signals detected from a living body, and a variation emphasizing unit that changes the value of the component signal, based on a time constant when the value of the component signal varies, in which the variation emphasizing unit changes a value of a first component signal in accordance with a value of a second component signal having a time constant shorter than that of the first component signal of which the value is changed. The present technology also provides a biological information processing system and a biological information processing method.

The disclosed invention includes a biofluid sensing device capable of passively or actively regulating an operating temperature of one or more sensors. The device includes at least one biofluid sensor in a thermally isolated environment and at least one temperature sensor to measure sensor environment temperature. Some embodiments include at least one thermal adjustor to regulate the sensor temperature by actively regulating the sensor environment temperature in response to a signal from the temperature sensor. The invention also includes a method of regulating temperature for a biofluid sensing device having a sensor for measuring an analyte in the biofluid. The method includes measuring a biofluid sensor temperature, regulating the sensor temperature to within a selected range of the measured sensor temperature, and maintaining sensor temperature within the selected range of the measured temperature throughout device operation. In some embodiments, the measured temperature is a calibration temperature.

In response to the difficulty in disease early diagnosis and low diagnostic accuracy in the prior art, a disease early diagnosis system based on sebum gas analysis is provided, which combines a micro-electro-mechanical system, a novel two-dimensional material and a metal surface plasma resonance technology to provide a device for sebum gas collection and infrared spectrum enhancement, which collects human body trace sebum gas and enhances its infrared spectrum by metal plasma resonance, and then the sebum gas metal-plasma-enhanced infrared spectrum is inputted into a disease early diagnosis model for analysis, and ultimately achieved early diagnoses of diseases. The method is a truly non-invasive disease diagnosis method, which is non-invasive, simple, efficient, and has the advantages of no pollution to the environment and no ecological damage.