设计说明书
总字数：26000+
自助食堂取餐系统的设计
摘要
在自助食堂规模化取餐消费场景中，菜品品类识别、重量计量、费用核算、消费播报与营收统计是食堂智能结算、高效运营的核心环节。传统人工取餐结算模式存在识别效率低、称重计量误差大、费用核算滞后、人工统计营收繁琐、消费信息公示不直观等诸多弊端，依赖人工操作的结算方式难以适配自助食堂高效化、智能化的运营需求。本文设计一款基于STM32F103C8T6单片机的自助食堂取餐系统，搭建集菜品识别、精准称重、费用计算、信息显示、语音播报、4G短信推送与营收统计于一体的智能化自助结算体系。系统依托RC522射频识别模块读取菜品信息，精准获取菜品种类与对应单价；搭配HX71称重模块实时采集取餐菜品的实际重量，结合菜品单价自动完成消费金额核算。设备搭载OLED显示屏，可实时本地展示菜品单价、取餐重量以及应付总金额，实现消费数据可视化呈现；集成CN-TTS语音播报模块，自动播报菜品单价与最终支付金额，为就餐人员提供清晰的消费提示。同时系统配备独立功能按键，支持用户确认购买、确认支付以及工作人员查看累计总销售额等操作，并通过AIR780E 4G通信模块完成单笔消费销售额的短信推送，实现消费数据远程同步记录。本系统有效解决了传统食堂人工结算效率低下、计量核算易出错、营收数据统计不及时、消费公示不透明等痛点，实现食堂取餐自助化结算、数据智能化统计、信息立体化提示，显著提升自助食堂的结算效率与运营管理智能化水平，适用于各类校园、企业自助食堂场景，具备较强的实用性与推广价值。
关键词：STM32单片机；自助取餐；RFID菜品识别；智能结算；4G数据推送
In the large-scale meal taking and consumption scenario of self-service canteens, dish identification, weight measurement, expense accounting, consumption broadcast and revenue statistics are the core links for intelligent settlement and efficient operation of canteens. The traditional manual meal settlement mode has many drawbacks such as low identification efficiency, large weighing measurement error, delayed expense accounting, cumbersome manual revenue statistics and unintuitive consumption information display. The manual settlement method cannot meet the efficient and intelligent operation requirements of self-service canteens. This paper designs a self-service canteen meal taking system based on STM32F103C8T6 single-chip microcomputer, and builds an intelligent self-service settlement system integrating dish identification, accurate weighing, expense calculation, information display, voice broadcast, 4G short message push and revenue statistics. The system uses the RC522 radio frequency identification module to read dish information and accurately obtain the type and unit price of dishes. The HX71 weighing module is used to collect the actual weight of the taken dishes in real time, and the consumption amount is automatically calculated combined with the dish unit price. Equipped with an OLED display screen, the device can locally display the dish unit price, meal taking weight and total payable amount in real time to realize the visual display of consumption data. Integrated with the CN-TTS voice broadcast module, it automatically broadcasts the dish unit price and final payment amount, providing clear consumption reminders for diners. At the same time, the system is equipped with independent function keys to support users to confirm purchases and payments, and allow staff to check the cumulative total sales revenue. It also realizes the short message push of single transaction sales revenue through the AIR780E 4G communication module, completing the remote synchronous recording of consumption data. This system effectively solves the pain points of low manual settlement efficiency, prone-to-occur measurement and accounting errors, untimely sales data statistics and opaque consumption publicity in traditional canteens. It realizes self-service settlement, intelligent data statistics and three-dimensional information reminder for canteen meal taking, greatly improves the settlement efficiency and operation management intelligence level of self-service canteens. It is suitable for various campus and enterprise self-service canteen scenarios, and has strong practicability and promotion value.
Keywords:STM32 Single-chip Microcomputer; Self-service Meal Taking; RFID Dish Identification; Intelligent Settlement; 4G Data Push
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