设计说明书
总字数：22000+
摘要
随着生鲜行业的快速发展，生鲜产品在运输过程中的品质保障成为影响市场竞争力的关键因素。传统的生鲜运输监控主要依赖人工巡检，存在参数监测不及时、调控滞后、信息反馈不及时等问题，难以满足生鲜产品对运输环境的严格要求，易导致产品变质损耗。
基于 STM32F103C8T6 单片机的生鲜运输车监控系统，整合了 DHT11 温湿度传感器、MQ-3 酒精检测模块、AO-O3 氧气传感器、GPS + 北斗二合一模块、按键、OLED 显示屏、ESP8266 WIFI 模块及执行设备（制冷装置、加热装置、加湿装置、通风装置、增氧装置等），实现了生鲜运输过程的自动化监测与智能调控。系统核心功能包括：通过 DHT11 实时监测货柜内温湿度，温度高于设定值时开启制冷，低于设定值时开启加热，湿度过低时进行加湿，过高时开启通风；通过 MQ-3 检测司机是否饮酒驾驶，检测到酒精数值后车辆无法启动并报警；通过 AO-O3 检测货柜内氧气浓度，浓度低时进行增氧；借助单片机内部时钟，车辆启动后开始计时，到达设定时间（三个小时）后报警提醒司机疲劳驾驶，车辆熄火后停止报警，再次启动重新计时；通过 GPS + 北斗二合一模块检测运输车具体位置；支持通过按键设置各参数阈值；通过 OLED 显示屏实时显示各项监测数据；利用 ESP8266 WIFI 模块将数据传送到手机端。
该系统的实现，有效提升了生鲜运输车监控的自动化与智能化水平，减少了人工干预，确保了运输环境参数的稳定，降低了生鲜产品的损耗，为生鲜运输行业提供了高效、可靠的解决方案，同时为同类运输监控设备的研发提供了参考，具有较高的实际应用价值。
关键词：STM32F103C8T6；生鲜运输；监控系统；传感器；智能调控；WIFI 通信
ABSTRACT
With the rapid development of the fresh food industry, ensuring the quality of fresh products during transportation has become a key factor affecting market competitiveness. Traditional fresh transportation monitoring mainly relies on manual inspections, which has problems such as untimely parameter monitoring, delayed regulation, and slow information feedback. It is difficult to meet the strict requirements of fresh products for the transportation environment, and it is easy to cause product deterioration and loss.
The fresh transport vehicle monitoring system based on the STM32F103C8T6 single-chip microcomputer integrates DHT11 temperature and humidity sensors, MQ-3 alcohol detection modules, AO-O3 oxygen sensors, GPS + Beidou dual-mode modules, buttons, OLED displays, ESP8266 WIFI modules, and execution devices (refrigeration devices, heating devices, humidification devices, ventilation devices, oxygenation devices, etc.), realizing automatic monitoring and intelligent regulation during fresh transportation. The core functions of the system include: real-time monitoring of temperature and humidity in the container through DHT11, turning on refrigeration when the temperature is higher than the set value, turning on heating when it is lower than the set value, humidifying when the humidity is too low, and turning on ventilation when it is too high; detecting whether the driver is driving under the influence of alcohol through MQ-3, and if alcohol is detected, the vehicle cannot start and an alarm is issued; detecting the oxygen concentration in the container through AO-O3, and increasing oxygen when the concentration is low; with the help of the internal clock of the single-chip microcomputer, timing starts after the vehicle is started, and an alarm is issued to remind the driver of fatigue driving when the set time (three hours) is reached. The alarm stops when the vehicle is turned off, and timing restarts when the vehicle is started again; detecting the specific position of the transport vehicle through the GPS + Beidou dual-mode module; supporting the setting of various parameter thresholds through buttons; real-time display of various monitoring data through the OLED display; transmitting data to the mobile phone through the ESP8266 WIFI module.
The implementation of this system has effectively improved the automation and intelligence level of fresh transport vehicle monitoring, reduced manual intervention, ensured the stability of transportation environment parameters, reduced the loss of fresh products, provided an efficient and reliable solution for the fresh transportation industry, and also provided a reference for the research and development of similar transportation monitoring equipment, with high practical application value.
Keywords:STM32F103C8T6; fresh transportation; monitoring system; sensor; intelligent regulation; WIFI communication
目录
第1章 绪论
1.1 研究的目的及意义
1.2 国内外发展情况
1.3 本文主要研究内容
第2章 设计思路与方案论证
2.1 主要元器件选择
2.1.1 主控芯片选择
2.1.2 温湿度传感器选择
2.1.3 GPS + 北斗二合一模块选择
2.1.4 酒精检测模块选择
2.1.5 氧气传感器选择
2.1.6 按键模块选择
2.1.7 显示模块选择
2.1.8 WIFI 模块选择
2.2整体设计方案
第 3 章 硬件设计
3.1 主控电路模块
3.2 温湿度传感器电路
3.3 GPS + 北斗二合一模块电路
3.4 酒精检测模块电路
3.5 氧气传感器电路
3.6 显示模块电路
3.7 按键模块电路
3.8 WIFI 模块电路
3.9 执行设备驱动电路
3.10 报警电路
第4章 系统程序设计
4.1 编程软件介绍
4.2 系统主流程设计
4.3 独立按键
4.4 OLED显示流程设计
4.5 温湿度检测模块子流程设计
4.7 GPS模块子流程设计
4.7 WiFi模块子流程设计
第 5 章 实物测试
5.1 整体实物测试
5.2 温湿度传感器功能测试
5.3 GPS + 北斗二合一模块功能测试
5.4 酒精检测模块功能测试
5.5 氧气传感器功能测试
5.6 疲劳驾驶计时报警功能测试
5.7 WIFI 模块功能测试
5.8 按键与显示功能测试
5.9 执行设备功能测试
第6章 总结与展望
一、总结
二、展望
致谢
参考文献
附录
附录一：原理图
附录二：PCB
附录三：主程序
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