5 3 Data Flow Diagram (DFD) University of Electronic Science Technology of China(UESTC) PROGRAM Push READ Input Buttons PANEL READ Sensor Value SONSORS INTERPRET Panel Input PROGRAM Run, I/o Sensor Input VALIDATE Star, Command PANEL End INPUT PROCESS Valid Panel Inputs PANEL PROCESS INPUT I/O COM Motion Sensor Output COM PROCESS Motion Output Panel Run, OUTPUT Output Stop, MOTION ACK TO SONSORS COM Resume Lights Motion OUTPUT Block RECEIVE TO PANEL OUTPUT ACK AXIS DATA Axis Block Axis ACK AXIS CONTROLL Axis Input Axis Output Real-Time Systems Lab LIAO Yong5 Real-Time Systems Lab LIAO Yong University of Electronic Science & Technology of China (UESTC) 3 Data Flow Diagram (DFD) READ PANEL Push Buttons VALIDATE PANEL INPUT Panel Input PROCESS PANEL INPUT Valid Panel Inputs READ SONSORS Sensor Value Input Sensor Input PROCESS I/O COM OUTPUT TO SONSORS I/O Command Sensor Output Output PROGRAM INTERPRET PROGRAM Run， Star， End Panel Output OUTPUT TO PANEL Lights Motion ACK RECEIVE ACK Axis ACK Axis Input AXIS CONTROLL Axis Block Axis Output PROCESS MOTION COM OUTPUT AXIS DATA Motion COM Run， Stop， Resume Motion Block