Design Of Automatic Coffee Machine For Single Coffee

Single coffee has been popular in Europe and America since 2010.It began to be popularized in Taiwan in 2012 and gradually get into Chinese market in the past two years.In this 7 years of development,the single coffee still uses the traditional manual method to product.At present,there is no automatic machine for extracting single product coffee on the market.The traditional manual extraction method is not easy to grasp and it requires professional training and a long period of practical training to achieve a higher level of extraction,so every single coffee shop need to be equipped with professional barista.Due to the high salary of professional barista,this directly leads to the high price of single coffee.In addition,the high quality single coffee needs strict extraction proportion and water temperature requirement.Although we can know about the water by pot with capacity scales,but in the extraction process,coffee flowing from the filter cup is easy to cause fluctuations of the coffee,making it difficult to accurately determine the amount of water.In addition,the temperature of the hand punch pot’s temperature will decline rapidly with the time and the amount of water in the pot,which makes it difficult to maintain the temperature constant.Finally,the extraction technique adopted by each producer is different,even the same person,the mood swings also affect the level of manipulation.The problems of high cost,stability and consistency have directly led to the slow promotion and unacceptable by consumers.In order to solve the problem of constant temperature and constant water content,this design takes MSP430F4152IPM as the control core,matches the NTC temperature sampling module,the water level detection module,the water temperature detection module and the heating module to realize the constant temperature water extraction.In addition,the system also customized "Lotus"extraction nozzle to make the coffee powder extraction more uniform.This design also increased the function of LCD segment type liquid crystal display and extraction temperature of free set to meet the needs of different users.Consumers can set the button to randomly set the extraction temperature and extraction ratio,so it achieves a more friendly man-machine interaction.The system will achieve ± 1 ℃,and the error of the water control is less than 5%to rearch a very good consistency,also improve the extraction efficiency,and achieve a better stability.It has a certain significance for single coffee market promotion.