Protocol Conformance Test Sequence Generation for Q/GDW11709.2 Based on FSM

摘要

In order to realize healthy communication and accurate information exchange between the charging tariff and control unit (referred to as TCU) and electric vehicles during charging service, the enterprise standard Q/GDW11709.2 of State Grid Corporation of China stipulates the communication protocol between TCU and charging pile. The protocol standard is the basis of the interconnection between the TCU and the charging controller (referred to as CTR), and the protocol conformance test is the precondition of ensuring the protocol implementation and healthy communication, one of the major components of protocol testing is generating test sequences. Based on the study of the communication protocol and mechanism between the TCU and the CTR, the finite state machine (referred to as FSM) model of Q/GDW11709.2 communication protocol is established, and the UIO sequence of each state in the state machine is calculated.