基于PID控制的可拆分恒温暖菜板

PID-Controlled Detachable Constant-Temperature Food Warming Plate

摘要: 针对食物降温致口感流失问题，研发了一款基于PID控制的可拆分恒温暖菜板。该暖菜板采用模块化可拆分设计，配置PID控温算法实现精准温控。系统以STM32F103C8T6为主控芯片，通过实时温度采集与PID运算，动态调节PWM占空比驱动PTC加热单元，快速达到目标温度。各加热模块通过CAN总线实现智能组网通信，主控单元内置蓝牙模块可与手机互联，支持实时显示设备ID、当前温度，并可通过移动端远程设置目标温度及加热时长。测试表明，该装置可在10秒内升温10℃(26℃至36℃)，稳态误差 ≤ 3℃，为行业研发提供技术参考。

Abstract: To address the issue of food cooling leading to loss of taste, a detachable constant temperature warming plate based on PID control was developed. This warming plate adopts a modular and separable design, equipped with a PID temperature control algorithm to achieve precise temperature regulation. The system uses the STM32F103C8T6 as the main control chip. Through real-time temperature acquisition and PID calculations, it dynamically adjusts the PWM duty cycle to drive the PTC heating unit, quickly reaching the target temperature. Each heating module achieves intelligent networking communication via the CAN bus. The main control unit has a built-in Bluetooth module for mobile connectivity, supporting real-time display of device ID and current temperature, and allowing remote setting of target temperature and heating duration via a mobile terminal. Tests show that the device can heat up by 10˚C (from 26˚C to 36˚C) within 10 seconds, with a steady-state error of ≤3˚C, providing technical reference for industry research and development.