The Design And Development Of Dairy Cattle Information Acquisition System

With the rapid development of dairy aquaculture in our country,how to increase the production of milk, improve the quality and make more profit benefits is an important subject.To promote the standardization of dairy farming, intensive and scientific, realize the production management from the traditional to the modern management mode ,to the scale operation as the carrier and continuously improve the scientific and technological content,is vital for China's dairy industry to development sustained and healthyIt is an important and complicated work to acquire and process the dairy and related individual information in scale farms farms. There will be a lot of errors sometimes and not real-time rely on manual data collection,it will be bring a lot of difficult to the management.The development of computer technology and applications in the aquaculture industry making the management and monitor dairy cows more scientific, rigorous and convenient.This paper designed a one-to-many points of the low-power wireless data acquisition system based on the virtual instrument and its software development platform LabVIEW, using the ultra-low power wireless transceiver module NRF24E1, combined with high-performance MCU (Atmega32) technology, and it can be accurate, rapid and reliable to realize a variety of functions that collect environmental, activity, milk yield information of dairy cattle online, and storage, display and query historical data, and it can be also greatly reduces the development cycle and cost of system, to achieve the purposes of economical and practical.This paper introduces the design of overall system, the software and hardware that consists of terminal data acquisition,the hardware circuit and software programming of low-power wireless communication module, serial communications of RS232, as well as to acquisition, display and management the receive data by PC. In the terminals of data Acquisition, temperature and humidity measurement and activity measurement selection digital sensor SHT11 and Z02, system can directly send the digital signal that sensor output to MCU Atmega32 processing, only very few external devices can be work, and simplifying the circuit design.Analog signal that Weighing sensor output through instrument amplifier AD620 conditioning connect to the PA port of Atmega32 for A / D conversion and processing, and then can be realize the milk yield data collection. In the wireless communication select a low power 2.4GHz transceiver chips nRF24E1, it's maximum standby current less than 2μA, and can also be easily achieved a point to multipoint mode communication by setting a different address in software. The graphical programming of Labview,and the simple serial communication between the host computer and the slave computer, making the whole system as high degree of modularity, clear structure, easy adjustment, stable and reliable operation.The experimental results show that this system of dairy information acquisition has features such as friendly user interface, complete functions and simple operation,it can meet the basic data collection needs of dairy farm, and has good application prospects.