When AGV reaches the automatic door on the second floor (automatic door 1 on the outside and automatic door 2 on the inside), it needs to open and close the door. When AGV enters from the outside, the process is as follows(A) . AGV reaches the door opening request position and sends out the door opening 1 request;(B) After receiving the request to open the door, the information system will feed back to AGV to open the door;(C) . the AGV system judges that the feedback is that the door 1 has been opened (the information system feedbacks that the opening fails, such as the wrong opening sequence);(D) . after AGV enters the transition space of automatic door 1 and automatic door 2, and leaves the closing range of automatic door 1, AGV sends out the request of closing door 1;(E) After receiving the request to close the door 1, the information system feeds back to AGV to complete the closing;(G) . AGV sends out the request for opening 2 after receiving the completion of door 1 closing;(H) After receiving the request to open the door, the information system will feed back to AGV to open the door;(1) . AGV system judges that door 2 has been opened (information system feedback door opening failure, such as wrong door opening sequence);(J) . after AGV enters the explosion-proof space and leaves the closing range of automatic door 2, it sends out the request of closing door 2;(K) . after receiving the request to close the door 2, the information system feeds back to AGV to complete the closing;(50) . AGV forward to the dumping station;