Abstract: For the inadequate use of system resources and poor performance in the development of ticket vending machine software system, multithreading technology is proposed. Combing with the software system architecture and running mechanism of multi-threading technology, this paper achieves the device driver layer and communication layer of ticket vending machines software system by C++, and gives some key code. The performance of the whole software system has been greatly improved since this technology is used. Now, the software system has been stably operated in line two Wuhan metro.

Key words: automatic fare collection system, layer architecture, synchronization, critical section