The Application Of CCD Technology In Black Tea Fermentation Machine

With the current development of tea, both the quality and quantity are important. The main process of Black Tea includes the preparation and purification. While the early fermentation process is the key process in the Black Tea quality formation. In Black Tea fermentation process rolled leaves content turn to theaflavins and thearubigins, which also leads to the rolled leaf color from dark green to red, a traditional fermented Black Tea moderate judgment is identified by naked eyes, not only time-consuming and human factors. The main factors affecting of the Black Tea fermentation are room temperature, room humidity and pH.With the emerging technology deeply and cross greatly improves the tea production efficiency. The main design of the application is CCD technology in Black Tea fermentation machine, a preliminary analysis using CCD technology to judge the feasibility of Black Tea moderate fermentation. CCD lens design used for production is Toshiba TCD1304AP, Black Tea fermentation machine for the use of 6CFJ-21 Black Tea fermentation machine. Aims at the analysis of different fermentation degree Black Tea fermentation leaf color gray value and by calculating the effective area of the judge Black Tea fermentation is appropriate. Adjusting the fuzzy control, At the same time by judging the results of preliminary implementation of the temperature and humidity, The follows are the experiment results:1.Black Tea fermentation process color changes were analyzed exact science. Analysis of the scope of RGB value and convert them to gray value. More intuitive science that Black Tea fermentation degree, also used a variety of images to ensure that the calculation of the effective area of the accurate to ensure the scientific standard of the whole process, the effective area calculation and remove light onto a tape and fermentation caused by the uneven error. The effective area Black Tea calculation of Black Tea moderate fermentation of gray value specific range when Gray≥ 83 indicates that the point is insufficient fermentation pixel; when 22≤Gray≤82 denotes moderate fermentation; when Gray≤21 expressed as the pixel over fermentation; when Gray≥240 or Gray≤14 marked invalid pixel, final effective scientific judgment on the degree of fermentation.2.Black Tea fermentation temperature 25 ℃, humidity around 95%, under the optimum fermentation time is about 160min, the range of moderate fermentation for 110-180min. Equipment upgrading technological transformation Black Tea processing technology, realize technological innovation process in the traditional, improves the quality and quality Black Tea also improved Black Tea yield, more automatic and standard of the whole system to meet the market demand and broad prospects on the yield and quality of Black Tea..3.The PLC, FPGA, temperature sensor, humidity detector and other emerging technology introduction Black Tea fermentation process. Ensure the timely and effective regulation and control process. We use STEP7 to make it possible; this paper combined the PROFIBUS-DP network and completes the data transmission between PLC and PLC PROFIBUS-DP protocol has the advantages of simple operation, effective, perfect functions and reliable real-time communication function. The design for color discrimination Black Tea fermentation to make preliminary analysis and discussion of the application of CCD; We still needs further study and extension at the theoretical stage.