Based on the design concept of virtual instrument and the design method of function modulation, using PC machine and data acquisition card as hardware system, proposed a design of sewage multi-parameter online monitoring system which based on application program platform of Lab VIEW. The system has friendly human-machine interface, the function is comprehensive and it is easy to operate. It has achieved the sewage multi-parameter collecting, recording, controlling and management automatic, and enhanced the automaticity of the sewage collecting and examination. The test indicated that the system worked well, achieved the anticipated target.
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