Intelligent Flow Totalizer Based on MSP430 Mixed Single Microcontroller

According to the facts that mechanical roots flow meters are widely applied for natural gas flow measurement, an intelligent flow totalizer based on zero power pulse sensor is developed in this paper. The flow totalizer is designed based on MSP430 single chip microprocessor (SCM) coupled with advanced electronic circuit and software, and developed into an intelligent head with multi-functions and digital display. Both theoretical and experimental results show that the intelligent flow totalizer has favorable performance with low power consumption and high accuracy. Compared with similar products, this design is characterized with simple hardware structure, powerful software functions, high reliability and low costs. The meter with this design can work at a temperature as low as -30degC, and has a strong anti-jamming capability. Not limited to roots meter, the totalizer can work with other pulse-type instruments for data processing. The design has been proved feasible, and the totalizer is being applied in the market.