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In recent years, with per capita income growth and dietary changes, China's dairy industry has ushered in an era of high-speed growth, China's large-scale dairy farming flourished. Dairy production management from the traditional to the modern management changes to strengthen the dairy industry standardization and scientific construction, the existing scale of operation, increase the technology content, this is very important for China's dairy industry . Cows income, mainly from adult cow's milk production. The milk production and milk conductivity reflects the health of cows, milk conductivity reflected in the quality of milk is an important basis to determine whether the cows infected with mastitis. The individual cows milk production, conductivity indicators and deal with a very important job. The traditional method of measuring milk production is the use of manual measurement, not only labor-intensive, low efficiency, and measurement results vulnerable to man-made factors, real-time, brought great difficulty to the dairy farm managers, cow disease diagnosis and timely treatment as well as and breeding the inconvenience. The subject on the basis of the development status of research at home and abroad on milk yield detection, the shortcomings of the existing measuring equipment. The actual situation of China's small and medium-sized cattle at this stage, drawing on the excellent research at home and abroad, to design a new type of milk yield detection system. This issue to develop a data acquisition system user-friendly, easy to operate. The detection system of the overall program is designed after a comprehensive analysis of the issues the actual object of study characteristics, and design the hardware circuit. Use of weighing sensors and conductivity sensors for real-time detection on milk yield and conductivity, STC89C52 microcontroller to control the detection system, and signal processing and data acquisition part of the circuit design. Virtual instrument and its software development platform LabWindows / CVI on PC software design and development, including data acquisition and processing, man-machine interface, back-end database three parts. The system can be achieved on milk yield, milk conductivity data real-time acquisition, storage, display, and historical curve callback function. Systems and database technology combination, cows all the information stored in the database, to facilitate the maintenance of the user of the system information, reduce development costs of the system, to achieve the economic and practical purposes. Application of the system of cows milk production and milk conductivity measurement test, the test indicates that the system is capable of timing, continuous, accurate measurement and recording of milk production, conductivity, operation is simple, to meet the cow the basic needs of the field data acquisition system is low cost, high reliability.
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