| As a non-traditional breeding technology with high production efficiency and conducive to large-scale development,duck cage breeding technology has been promoted and applied nationwide.However,at the present stage,the overall technical level of cage breeding equipment is low,and most of the breeding sites have problems such as poor feeding accuracy,low automation and lack of intelligent information collection devices.Based on the discrete element simulation technology,this project analyzes the interaction effect between breeder duck feed pellets and feeder,and designs a kind of precision feeder applicable to breeder duck feed.At the same time,based on the application of embedded system,combined with sensor detection and control technology,we study and design a monitoring and information collection system applicable to the breeding research process of caged breeder ducks,which helps to realize the precise feeding,automatic detection and informationization of collected data in the breeding stage of caged breeder ducks,and is of great significance for the efficient development of caged breeding technology and the rapid promotion of caged breeding technology.The main research contents of this paper are as follows:(1)Design of equipment structure was carried out.With the goal of realizing automatic collection of breeding index data and precise control of feeding quantity for caged breeder ducks,the functional design of the working area of the overall equipment was carried out,mainly including: breeder duck identification,precise control of feeding quantity,individual basic health status detection,egg-laying identification and counting,and feed residue detection.Improvements were made on the original feeding system,and the overall mechanical structure and workflow of the system were determined.A pellet feed precision feeder was designed,and the selection of feeder drive and control scheme were studied.(2)Simulation and optimization tests of the precision feeder were carried out.Based on the discrete element simulation technology,the relevant simulation parameters were measured and the simulation test of the feeder was carried out.In order to solve the problem of uneven feeder discharge,the principle of feeder filling and discharge as well as the core structure parameters were analyzed,and a three-factor,three-level orthogonal test was established with feed passage spacing,spiral lift angle of discharge blade and blade speed as the test factors,and the coefficient of variation of feeder feed discharge per unit time as the evaluation index.According to the results of the orthogonal test,the main order of the influence of each parameter on the discharge uniformity was obtained as feed passage spacing,discharge blade spiral lift angle and blade rotational speed;when the feed passage spacing was 9.0mm,blade spiral lift angle was 71.5° and blade rotational speed was 58.4r/min,the coefficient of variation of feed discharge of the feeder reached the minimum value of 18.66%.(3)A monitoring and information acquisition system was designed.In order to determine the requirements of the feed concentrate feeding work to be carried out by the system and the specific content of the collected information,a calibration model for individual identity of caged breeder ducks was designed,a method of feeder quantitative control was studied,the data structure of the system information collection was analyzed,and the overall control scheme of the system was determined.With STM32F103 development board as the control core,module function selection and control configuration are completed according to breeding needs.The system realizes functions such as breeder duck identity detection,individual breeder duck detection,precise feeding control,egg production counting,feed residue detection,real-time display of some data,and data transmission between microcontroller and upper computer.With Aliyun Quick Bi as the cloud platform tool,the raw data collected by the system was processed,graded and integrated to match the specific needs of the actual breeding data.The data contents were plotted into visual reports and uploaded to the cloud for real-time sharing between the computer and cell phone terminals.(4)Feeder performance verification and system working test trials were conducted.In the feeder performance verification test,the feeder discharge performance under the optimal combination of parameters was verified in the bench test,the feeder discharge coefficient of variation was 18.76%,the discharge speed was 109.2g/s,and the relative error between the discharge preset amount and the actual amount was 3.07%,which satisfied the feeding demand of breeding ducks.At the same time,a functional verification test was conducted on the overall workflow of the system,and the results showed that the device system designed in this paper could collect the set data more accurately and complete the transmission and processing of data. |
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