▎ 摘　　要

NOVELTY - A graphene lung biopsy quantity tester, comprising a host and a blowing nozzle, the host surface is provided with a display, a host is provided with a blowing pipe, the blowing pipe and blowing mouth sealing connection, in the host is further provided with a graphene pressure sensor connected in turn, an instrumentation amplifier, analog-to-digital converter, microprocessor, voice player, the graphene pressure sensor arranged on the surface, the microprocessor output end connected with the display input end of the main machine in the blowing tube is further provided with a memory connected with the microprocessor. The utility model using graphene pressure sensor has thin thickness, light weight and flexible and can be subjected to bending and vibration of millions of times, good durability, and high sensitivity and large range of usable bandwidth characteristics, improve the vital capacity detection precision, but also can prolong the service life of the tester.