<div class="document"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 1、项目功能介绍</h3> <hr class="horizontal-splitline normal-bold-2"> <p><span style="font-family: 宋体;">   红外体温计因安全卫生、测量高效而备受青睐，发展迅速。但目前市场上的红外体温计存在测量误差大、成本高等缺点，应用受到限制。</span><span style="font-family: 宋体;">因此本文提出了一种基于</span><span style="font-family: Calibri;">STM32F103C8T6</span><span style="font-family: 宋体;">的高精度便携式红外体温计。</span></p> <p><span style="font-family: 宋体;">   首先给出了红外体温测量的系统方案，分析影响测量精度的因素，然后利用<span style="font-family: Calibri;">STM32F103C8T6</span></span><span style="font-family: 宋体;">作为控制核心，通过</span><span style="font-family: Calibri;">MLX90614</span><span style="font-family: 宋体;">红外传感器、</span><span style="font-family: Calibri;">DS18B20</span><span style="font-family: 宋体;">数字温度传感器、</span><span style="font-family: Calibri;">VL53L0x</span><span style="font-family: 宋体;">激光测距传感器等获取相关信息，利用串口导出原始温度与距离信息，根据最小二乘原理，设计相应补偿与标定算法，给出多项式拟合公式，拟合出实际人体体温值。</span><span style="font-family: 宋体;">硬件系统共包括有最小系统电路、锂电池充电电路、</span><span style="font-family: 宋体;">低压差降压电路、人机交互电路、电池电压测量电路、串口通信电路、传感器接口电路。用户按下测量键后可快速获得测量结果并显示在</span><span style="font-family: Calibri;">OLED</span><span style="font-family: 宋体;">上，体温不正常时蜂鸣器会报警提示。结合传感器特性与实际测量需求，设计了测量距离为</span><span style="font-family: Calibri;">2cm-70cm</span><span style="font-family: 宋体;">范围内的距离补偿公式，经实际实验测试，误差小于</span><span style="font-family: Calibri;">0.1</span><span style="font-family: 宋体;">℃，提高了测量精度，验证了距离补偿与标定的准确性。</span></p> <p><span style="font-family: 宋体;">   本项目创新点有一键多功能，一个按键可实现测温、开关机、历史数据查看等功能；双模式补偿，提出了基于距离与环境温度的补偿；三模式测温，可以实现环境温度、物体温度与人体温度的测量。本次设计具有容易实现批生产、成本低廉、补偿准确度高等优点，可应用于红外体温仪的生产中。</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*2、项目属性</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6;"><span style="font-size: 14px;">项目为原创。</span></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 3、开源协议</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">GPL3.0开源协议</span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*4、硬件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><strong>4.1 系统介绍</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">       如图4-1为整体硬件系统架构图，在硬件系统中，包括有充电管理单元、一键开机系统、电源处理系统以及各个子电路模块，图4-2为硬件系统的具体组成成分，包括电源管理单元、MCU最小系统、传感器接口、人机交互单元、3D外形设计组成，电源管理单元主要包括锂电池充电电路、一键开关机电路、低压差线性稳压电路、以及电压采集电路，人机交互单元又包括按键电路、OLED显示单元以及蜂鸣器驱动电路。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/cWzW38tJdzyLS9xFgnk8CuG5vb7YTELCdqR1DjP5.png" width="392" height="327"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-1 硬件架构图</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/XhOrxfyElITsYZVJ9qOE3WsxrX6ImYdfFl3EAVsA.png" width="433" height="338"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-2 硬件系统组成</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><strong>4.2 电源系统</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><strong>4.2.1 一键开关机电路</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;">       图4-3为一键开机电路，默认选择锂电池作为供电输入，当插入USB接口时，MOS管Q4断开，切换成USB供电，Q5由MCU与按键控制，通过检测按键状态实现开关机与测温控制。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/JqHuMMo5NfLmRdKHxJiEmEEUZSWzyMHDFyNyezfV.png" width="428" height="272"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-3 一键开机电路</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><strong>4.2.2 锂电池充电与LDO电路</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;">       图4-4为锂电池充电电路图，图4-5为低压差线性稳压器电路，锂电池充电电路采用TP4065,线性锂离子电池充电器，选用这个器件的原因一方面是其极小的封装，一方面是极低的价格，它本身具有防倒冲电路，可以通过外部电阻设置充电电流，非常适合本次的设计。稳压器则选择了较为常用的SPX3819，只需要几个外部电容，最大电流为500mA，满足本次设计需求。锂电池为100mA，通过电阻R2 18Kohm设置充电电流为0.5C，50mA，充电电流的计算公式为：</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/NCe5qJTnhz7aevniNXR0Hm7mru7r0R9KKZdAvcxG.png"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/rbKDfc5r6nyukhzDwKlfPoW1LWa7kaMuTnbi5L5V.png" width="460" height="379"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-4 锂电池充电电路</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/lVqjZmUosEF5asffhpHb2k3dk3GZQSCWjkBCCWhT.png" width="464" height="158"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-5 3.3V电路</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><strong>4.3 人机交互系统</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;">       人机交互单元有OLED显示电路，按键检测电路，蜂鸣器驱动电路。OLED采用的是SSD1306驱动的0.96寸裸屏，分辨率为128*64 。蜂鸣器使用的是3.3V有源蜂鸣器。如图4-6 、4-7所示。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/0PCN1KJOaV1xswk25398X3y1dZB3qokLzly50d8t.png" width="417" height="266"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-6 OLED驱动电路</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/rEXZuqagmnn5vgKwjvObFK0VQ4bkPcyJh7HFvLzq.png"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-7 蜂鸣器驱动电路</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><strong>4.4 数据采集与存储电路</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;">       数据采集包括环境温度采集、人体、物体温度采集、电池电压采集，环境温度采集使用单总线数字温度传感器DS18B20，通过采集环境温度用于后续的温度自适应补偿，体温测量传感器使用的是MLX90614，是测温的主要传感器，它的测温范围为-40-115摄氏度，分辨率为0.02，并且自带光学滤波器，可以大幅减少外界可见光干扰。激光测距传感器使用VL53L0x，测距范围为20mm---2000mm，主要用来进行距离补偿。并且测量距离不受目标反射率的影响。传感器如图4-8所示。数据存储使用的是AT24C02  EEPROM芯片，可以存储256字节数据，主要用于存储用户历史测温数据与系统数据。电路图如图4-9所示。电池电压采集采用了最简单的分压电阻形式，锂电池电压最大4.2V，所以使用的是二分之一分压网络。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/NvLuColULOmu2FoUWiwfXy77giV1liBfGQW0MSPV.png"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/xoO9dcT06WnAKKdElKKbg7RpVk3fNsG4LHESdTcs.png"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-8 测温系统传感器实物图</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/7gsRLpxM6e6kot5O7WKHjk0gveSXiHF3MBDeiZ84.png" width="374" height="305"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-9 数据存储电路</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><strong>4.5 系统实物图</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/UwfWkKpooSZ4kxoL4R7DVkTTeZa8gPoV15XGxuUB.png" alt="" width="250" height="333"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-10 PCB正面</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/kHTDADfbid1zARmROS7hiulzCcX7F0lKq6tIbufl.png" alt="" width="446" height="335"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图4-11 PCB背面</p> <p> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-left-indent-1.6em" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*5、软件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><strong>5.1 系统介绍与程序流程图</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">       图5-1为软件系统架构图，软件系统中，使用了包括基本的GPIO、ADC、IIC、SPI、串口、定时器与中断等基本外设驱动，建立了传感器底层驱动与功能实现的应用层驱动，通过串口导出相关数据，利用第三方平台进行数据处理与拟合，此外使用开源UGUI，并为此开源项目增加了数字显示的驱动函数，用在了本次的项目设计中。图5-2为整体系统流程图，首先开机后进行系统与传感器的初始化，然后进入开机界面，检测按键是否按下，按下后返回按键状态从而执行相应的任务，无按键按下后，开启定时器计时，一分钟内无任何操作则自动关机。整体的软件系统包括系统初始化、传感器初始化与数据读取、体温补偿与标定、UGUI使用、电池电量监测。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/By5g04OpnaYpfSa4YzsmdJfdbwjBgC4mbux1TyXw.png" width="500" height="417"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图5-1 软件系统架构图</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/AopkvcxRWAzIioXy6EO9bGxIof5qKhB3XISdoc4K.png" width="444" height="496"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图5-2 软件系统程序流程图</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><strong>5.2 系统初始化与文件结构</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;">       系统初始化包括时钟初始化——主要是设置使用外部晶振，GPIO初始化主要是设置所有需要使用到的GPIO的基础配置，定时器中断初始化，主要用于初始化TIM2，TIM3。一个是用于定时关机，一个用于定时调用功能任务。GUI初始化包括底层的OLED驱动与UGUI的库文件驱动。传感器通讯接口初始化是对各个传感器的驱动，主要是IIC、SPI、SMBus、One-Wire总线的底层通讯驱动。如图5-3所示。整体用户文件结构包括HARDWARE文件夹---存放底层传感器的驱动，GUI文件夹---存放显示驱动与底层GUI驱动函数，以及用户自定义GUI界面。Algorithm文件夹则主要是包括功能实现代码，与测温补偿算式。如图5-4所示。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/byAzl4ToXuPf4sLA1yaIlqA9S4JznN1VSSywqH57.png" width="588" height="331"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图5-3 软件系统初始化</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/n3rhX3PUHSz8fBbbhCKYujZJmZ6zk2b2a6NEFlRJ.png" width="609" height="198"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图5-4 文件结构</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><strong>5.3 温度补偿</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">       使用MLX90614 红外测温传感器进行温度测量时，红外发射头距离测量表面的距离会对测量结果产生较大影响。另一方面，当测量距离增加时，在大气吸收的影响下，温度测量系统接收的辐射将减少，导致测温系统产生误差。因此，有必要进行温度补偿与数据标定。图5-5是串口导出的温度距离数据进行简单的数据处理后，得到的一个温度距离曲线，我们利用第三方平台（MATLAB数据拟合工具），结合最小二乘原理与传感器特性，最终选择多项式拟合，得到了补偿公式如式5-1，f(x,y)为补偿后的体温数据，x为传感器温度测量数据，y为测量距离。距离补偿后，还需要进行温度的二次补偿，图5-6为环境温度与测温结果的关系曲线，考虑到实验环境的限制，我们无法获得较多的数据，最终只通过这7组数据拟合，得出了式5-2的一个二次拟合曲线。Y 为最终拟合结果，x为距离拟合后的体温数据。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">  <img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/GGx09yvkHhoOXESwjLJqXPhdXEAmCv96qCo7l3ct.png"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/gk86czrvUExEvs1iolt9hHxfTXiuND3oMrJjNutZ.png"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/rw7JFMlAvI8vRFYBW8MYFNiA7sKXOtcNdSzzEyxa.png"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图5-5 测温结果与测温距离关系曲线</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/H1ooWDpda9HMEDFt1kQ5KFq7BdiFYxUGr0bnJ5qy.png" width="672" height="281"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图5-6 测温结果与环境温度关系曲线</p> <div> <img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/PwvacTUhVAMVV1fjxY4LjJYTlq3IVcLuHGIdeEBi.png" alt="未补偿" width="638" height="199"></div> <div style="text-align: center;">图5-7 未补偿前温度与距离变换关系曲线</div> <div><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/sVeykiowTqW28PD1QtBEgFP9ZKVzxOdmeilOuotW.png" alt="补偿后" width="629" height="521"></div> <div style="text-align: center;">图5-8 补偿后温度与距离变换关系曲线</div> <div> </div> <div> </div> <div> </div> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><strong>5.4 电量测量</strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;">       电量测量任务，通过ADC采集数据至缓存数组，然后对数据排序，去最值、在求平均值，送入误差判断，两次误差值小于设定值，进行电量更新。流程图如图5-7所示。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/XxuJkl9HC41y9tgZvItcYOV9htoGk9Ihzu3lln6X.png" width="269" height="555"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">图5-9  电量测量流程图</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-left-indent-1.6em" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*6、BOM清单</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img src="//image.lceda.cn/pullimage/eXAPYueA5z99NUdM23lSGtIi7aulhuxtIlw3RdoN.png"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*7、大赛LOGO验证</h3> <hr class="horizontal-splitline normal-bold-2"> <p style="line-height: 1.8;"><img src="//image.lceda.cn/pullimage/8dG2jkor6L1sUaRJ5aRtBjgakdoFqxu3Eojy2oIC.png" alt="" width="268" height="357"><img src="//image.lceda.cn/pullimage/c1YE1lFbzjqTp78R76C2lnEH032gb6hVeX0VkPOK.png" alt="" width="382" height="287"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 8、演示您的项目并录制成视频上传</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="font-size: 14px;">更多详情：<a href="/posts/06c94d90c2c447dfbd9ed7339ff4a5b1" target="_blank">https://diy.szlcsc.com/posts/06c94d90c2c447dfbd9ed7339ff4a5b1</a></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> </div>