The Development Of Wet Gas Flow Measurement Unit Based On TMS320VC5509A

Gas-liquid two-phase flow is a common flow pattern in industrial area. As a kind of gas-liquid two-phase flow, wet gas exists widely in many fields such as petroleum, chemical industry, Energy and other industries, so wet gas flow measurement at well head is becoming increasingly important. Thus wet gas flow measurement system is studied, and wet gas flow measurement unit is designed in this subject, then wet gas flow measurement at well head is achieved.Based on the analysis of wet gas flow measurement unit's functional requirements, TMS320VC5509A was chosen as the main processor, and the schematic diagrams of power circuit, data acquisition circuit, reference voltage circuit, real time clock circuit, memory expansion circuit, human-machine interface circuit, USB host interface circuit and CPLD interface circuit were designed, also PCB panel was drawn.The flow measurement unit software was designed by using C language on CCS2.2 development platform, and the basic functions of data acquisition module, keyboard module, liquid crystal display module, real time clock module and data storage module is achieved by programming. CPLD program design was achieved by using VHDL language in Quartus II 9.0 compiling environment. Assemble language was used to write second boot loader, and 16-bit parallel asynchronous memory Loading mode was adopted to achieve automatic run after energization.The wet gas flow measurement unit is small and light, and its power consumption is low, also its data storage capacity is large. Since it is easy to use, it is easy to promote.