基于ARM和WinCE平台称量销售式 自助售饭机的设计

韩春晖 梁西银

摘  要： 为解决传统一卡通售饭方式弊端，提高餐厅售饭的自助化和智能化，提出一种基于ARM和WinCE平台的称量销售式自助售饭系统设计方法。首先，运用传感器、RFID、ARM、语音播放、无线WiFi等技术构建自助售饭机硬件系统;其次，在WINCE操作环境下，采用C++ 和SQL设计售饭机人机交互、数据上传和后台数据监管部分软件系统;此外，为提高整机称量性能，采用稳定识别算法对DL101传感器模/数转换数据进行稳定识别处理，采用最小二乘法对称重数据进行非线性校正。测试分析表明，系统运行稳定，称量精度高，支付便捷，操作简单，具有较好的实用性。

关键词： 自助售饭机; 称量销售; 人机交互; 系统设计; 数据处理; 测试分析

中图分类号： TN603?34                             文献标识码： A                      文章编号： 1004?373X（2020）06?0043?04

Design of weighing and selling self?service rice vending machine

based on ARM and WinCE platform

HAN Chunhui， LIANG Xiyin

（College of Physics and Electronic Engineering， Northwest Normal University， Lanzhou 730070， China）

Abstract： A design method of weighing and selling self?service rice vending system based on ARM and WinCE platform is proposed， to solve the shortcomings of the traditional way of rice vending with one card and increase the self?service and intelligent restaurant sales vending. The hardware system of self?service rice vending machine is composed of the sensors， RFID， ARM， voice playing， wireless WiFi and other technologies. In the WINCE operating environment， the software systems of human?computer interaction， data uploading and background data monitoring parts of the self?service rice vending machine is designed by means of the C++ and SQL. The stable identification processing of the DL101 sensor′s analog?to?digital conversion data is performed by means of the stable identification algorithm， and the nonlinear correction of the weighting data is conducted by means of the least square method， after which the weighting performance of the whole machine is improved. The testing analyzes show that the system runs stably， and has high weighing accuracy， convenient payment and simple operation， which has a certain practicability.

Keywords： self?service rice vending machine; weighing selling; human?computer interaction; system design; data processing; testing analysis

0  引  言

随着物联网技术的发展，自助生活顺势而为，陆续出现了许多自助式的售饭机设计方案[1?9]。文献[1?5]所提出的售餐机设计方案，效仿自助售货机原理对不同种类的饭菜进行组合售卖，该方案按份销售，总额收费，饭菜重量相对固定，购买者所买到的饭菜难以合乎自己的饭量，极易造成浪费。文献[6?8]所设计的售饭机采用称量销售，自动化打饭设计，计量精确，提高了打饭效率，但仅适用于出售米饭，且机械设计结构较为复杂，造价较高。实地考察文献[9]所提的自助打饭式售饭机，虽有效杜绝“阿姨手抖”人情打饭，减少浪费，节约人力资源，但仅限于校内人员刷卡消费，支付方式单一，“立柜式”售饭机，体积较大。

综合以上考虑，本文提出了一种基于ARM和WINCE（Windows Compact Eidition）平台的减法式称量销售自助售饭机系统设计方法。……