Gas sensor is widely used for coal mine safety

and according to national regulation

it must be adjusted regularly

current gas sensor calibrator system can detect 5

8 sets of sensor at the same time

aiming at status of large amount of coal mine gas sensor and long time needed to be adjusted in large and medium-sized coal mine production process

a kind of adjusting system for 64 channels gas sensor based on MCU and FPGA is studied

overall design of the system is described and air path control module and module of output signal acquisition of sensor are expounded in detail. Verilog language is used in Quartus Ⅱ tool to implement logic design

simulation and synthesis of FPGA. The results show that the sys

tem can efficiently completes calibration of 64 channels gas sensor at the same time

greatly save manpower improves working efficiency and saves working time.