In order to shorten time of detection and separation of filter rod pressure drop and lower experimenter’s labor intensity

a fast measurement and separation method of filter rod pressure drop is proposed and the automatic operation device is developed also. A measuring head with two measuring channels which meets the technical requirements of the new standard in the tobacco industry is designed for fast testing. The programmable logic controller（ PLC） technology is used to control the gas path to replace the complicated electronic control parts.The value of high-precision pressure drop sensor and the filter rod pressure drop value are calculated and analyzed by both embedded micro-programmed control unit（ MCU） chip and high-speed ADS8341 data acquisition chip. Two channels sorting arm are used to separate the dual channel measurement results. The accuracy and repeatability of the device are tested by the standard filter rods with different nominal values. The performance of the device is verified by the filter rods with different resistance values. The results show that the measurement speed of device is more than 600 filter rods per hour without manual operation

and is two times faster than a single measuring head device. The testing accuracy of the standard rod reached 10 Pa and the accuracy rate of different filter rods separating is up to 100 %

which meets the requirements of the experiment detection.