The measurement and control system of Eriocheir sinensis, the Chinese mitten crab, could increase its survival rate and quality effectively. Based on the analysis and design of the system, the parameter ranges for major factors of water quality during crab breeding process were determined. Sensors of pH, dissolved oxygen (DO), and temperature were used to detect the value of pH, DO, and temperature. LabVIEW, a virtual instrument technology, was used to monitor water quality parameters during crab breeding process, thereby controlling the relay of inlet valve, water valve and oxygen valve by comparing the actual figures with normal parameter. This technology was used to perform the adjustment of water quality parameters respectively to achieve automatic control. In order to test the performance of the system, the monitoring time, stocking density and planting density were taken as experiment factors, and the error rate of the monitoring index was taken as evaluation index. The verification experiment results show that pH, DO and temperature monitoring errors were less than 10%, under the maximum constraint conditions of experiment factors, which meet the design requirements.
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