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diabetes_printer's Introduction

糖人的二维打印机

该项目是本人本科毕设,于 2018.6 完成

简介

糖人是**传统食品,设计一款糖人自动打印机。

  1. 融糖器用于将糖块融化并控制糖料的供给,以不锈钢加热圈为热源,实现四周均匀加热;通过 PID 算法对融糖器进行温控,使加热温度稳定在 120 摄氏度。

  2. 设计二维移动平台,使用了 逐点比较法 作为打印机 x, y 轴电机的驱动控制算法,打印机以类似于雕铣机的加工方式绘制糖人的线条。

  3. 制作 Android App 供用户操作打印机。应用通过蓝牙与打印机上的控制板(STM32F407)进行通讯。用户可以在手机屏幕上尽情设计糖人造型,并发送给糖人打印机进行制作。

  4. Android_App_Code 是App的实现代码,Stm32_Code 是打印机控制主板的程序

SolidWork 设计图

硬件间连接

糖人打印机 APP

成品展示

App设计

软件环境:Android Studio + Java

App基于 Model-View-Controller (MVC) 架构模式进行设计。

Diabete 实例代表一种糖人造型,保存了打印机中内置糖人造型的名字、id、是否正在制作等信息。其中用户 DIY 的糖人造型也是一个 Diabete 实例,这些实例全部用一个列表 DiabeteLab 联系起来。

App设计

下位机软件

糖人打印机使用 STM32F407ZGTx 系列芯片作为控制主板

软件环境 IDE : MDK-ARM V5 package version: STM32Cube FW_F4 V1.24.2 FreeRTOS version: 10.0.1 CMSIS-RTOS version: 1.02

App文件夹(应用层)

主板主要执行三个任务

  1. 与App通讯任务 :bluetooth_comm_task.c/h
  2. PID 温控任务 :temp_ctrl_task.c/h
  3. 糖人线条绘制任务 :draw_diabetes_task.c/h

Bsp文件夹(驱动层)

  1. 串口驱动 :bsp_uart.c/h
  2. PID算法 :pid.c/h
  3. 步进电机驱动 :stepper_con.c/h,同时这个文件中还实现了基于 逐点比较法 的双电机联动

实物

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