Voltage-and-flow control system used for measurement of aerosol particle size distribution

The invention discloses a voltage-and-flow control system used for measurement of aerosol particle size distribution and belongs to the technical field of environment aerosol. The voltage-and-flow control system used for the measurement of the aerosol particle size distribution is structurally characterized in that a circuit board is connected with a high-voltage module, a direct-voltage conversion module, a data acquisition card, an absolute pressure sensor, a mass flow meter and a temperature and humidity sensor through guide wires, the direct-voltage conversion module is connected with a draught fan through a guide wire, an air inlet, a pre-filter, a T-shaped tee joint, the mass flow meter, the draught fan, a flow-limiting hole, a radiating tube, a post-filter and an air outlet are connected in sequence through pipelines, the temperature and humidity sensor is connected with a vertical channel of the T-shaped tee joint through a pipeline, and the absolute pressure sensor is connected with the T-shaped tee joint through a pipeline. The voltage-and-flow control system used for the measurement of the aerosol particle size distribution is simple in operation, high in sensitivity, good in sealing performance, high in running stability, capable of being flexibly assembled with an aerosol particle size distribution measuring instrument, and applied to both laboratory measurement and out-field measurement.