设计说明书
总字数：11000+
随着生活智能化程度的提高，中国超市智能化程度也日新月异，商场购物也是人们生活必不可少的组成部分，但超市的运营模式也出现收费、称重排队等问题，浪费了顾客宝贵的时间并产生焦虑心理，购物体验和服务质量受到极大影响。针对上述存在的问题，本文基于单片机技术设计了智能购物车系统，在没有扫码商品时，通过OLED显示屏可以显示出广告信息；通过按键切换系统当前的工作模式，在查看功能模式下，通过扫码枪扫描商品条形码可显示出商品名、生成日期、保质期、产地，5s后显示同类推荐商品；在结算模式下，通过扫码枪扫描商品条形码可显示出商品名、单价、数量；通过HX711可进行物体称重，通过RFID确定商品名以及单价，最终得出总价；通过两个按键选择想去的购物场所地方，可通过显示屏显示路线；通过震动传感器检测购物车是否撞击到货架，如果撞击到，则声光报警；通过一个按键进行商品总计结算，通过支付二维码进行支付。实现智能化自助消费模式，提高超市购物效率和增强客户体验感，为顾客营造轻松的购物环境。
关键词：STM32单片机 购物车 用户体验 自助 智能
With the improvement of intelligent life, the intelligent degree of supermarkets in China is changing with each passing day, and shopping in shopping malls is also an indispensable part of people’s lives. However, the operation mode of supermarkets also has some problems such as charging, weighing and queuing, which wastes customers’ precious time and generates anxiety, thus greatly affecting the shopping experience and service quality.Aiming at the above problems, this paper designs an intelligent shopping cart system based on single chip microcomputer technology, which can display advertising information through OLED display when there are no scanned products. Press the key to switch the current working mode of the system. In the viewing function mode, the commodity bar code can be scanned by the code scanner to display the commodity name, date of production, shelf life and place of origin. After 5s, similar recommended products can be displayed. In the settlement mode, by scanning the commodity bar code with a code scanner, the trade name, unit price and quantity can be displayed; The HX711 can be used to weigh objects, and the product name and unit price can be determined by RFID, and finally the total price can be obtained. Select the shopping place you want to go through two buttons, and display the route through the display screen; Whether the shopping cart hits the shelf is detected by a vibration sensor, and if so, an audible and visual alarm is given; The total settlement of goods is made by one button, and the payment is made by the payment QR code. Realize intelligent self-service consumption mode, improve supermarket shopping efficiency and enhance customer experience, and create a relaxed shopping environment for customers.
Keywords：STM32 MCU Shopping cart User experience self-service intelligence
目 录
摘要
Abstract
第1章 绪论
1.1 研究背景及意义
1.2 国内外研究现状
1.3 论文的主要内容及结构
第2章 系统总体设计方案
2.1系统总体设计
2.2主要模块方案选择
2.2.1 主控模块方案选择
2.2.2 显示模块方案选择
2.2.3 称重模块方案选择
2.2.4 震动模块方案选择
第三章 硬件设计
3.1 主控模块电路设计
3.2 扫码枪模块电路设计
3.3 称重模块电路设计
3.4 RFID刷卡模块电路设计
3.5震动检测模块电路设计
3.6 显示模块电路设计
第4章 软件设计
4.1 编程软件介绍
4.2 系统主流程设计
4.3 独立按键子流程图
4.4 称重模块HX711模块子流程
4.5 OLED显示流程设计
第5章 实物测试
5.1 整体实物焊接图
5.2 购物过程检测实物测试
5.3 购物车受到撞击实物测试
第6章 总结展望
参考文献
附录
附录A 原理图
附录B PCB
附录C 主程序
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