The Design of Computer Measurement and Control System Based on Data Acquisition Unit

Based on DC100(YOKOGAWA) data acquisition unit and RS485 interface bus, a computer measurement and control system was introduced in detail. The hardware structure and software design of a sample on a experimental system of air-conditionings performance test with enthalphy-difference method were presented as well. And then, the design of real-time monitor program was discussed emphatically. The facts show that the system performance is stable and credible, and has a strong fault tolerance.