Abstract: An automatic pathogen-from-expiration detection system includes a gas pathogen recovery unit, a pathogen concentration unit and a sample detection unit. The method includes making the sample recovered by the gas pathogen recovery unit enter the pathogen concentration unit; in the pathogen concentration unit, gradually biasing the pathogen particles in the sample to the positive electrode side into the concentration channel under the action of the electrode; applying a fluctuating voltage greater than zero to a single sub-positive electrode, and alternating the voltage of the sub-positive electrode adjacent thereto with the fluctuating voltage, so that a varying potential difference is formed between the adjacent sub-positive electrodes, wherein the pathogen particles are gradually enriched in the middle region of the two adjacent sub-positive electrodes, and the concentrated sample is driven to move to the sample detection unit; and immediately detecting the concentrated sample in the sample detection unit.

Abstract: An automatic pathogen-from-expiration detection system and method is disclosed. The system comprises a gas pathogen recovery unit, a pathogen concentration unit and a sample detection unit.

Abstract: The present invention discloses a pathogenic microorganisms rapid concentration device and method. The device comprises an electrode and a microchannel for passing a sample, wherein the microchannel comprises a concentration channel and a sample channel, between which a filter element is provided, the electrode comprises a positive electrode and a negative electrode, the positive electrode comprises several sub-positive electrodes, after the sample flows into the microchannel, under the action of the electrode, pathogenic microorganisms in the sample are regionally enriched on a positive electrode side of the concentration channel to form a concentrated sample. The present invention provides a substantial increase in the rate and efficiency of purification of samples containing pathogenic microorganisms through precise electrical control.