基于nRF2401的鼓式制动器温度监测系统设计

 针对鼓式制动器温度测量中存在的难点，设计了一种基于无线数据传输的制动鼓温度测量系统。系统分为温度测量发射模块与温度接收存储模块，温度测量发射模块安装在制动鼓上随车轮一起转动，温度接收存储模块安装于驾驶室内。温度测量发射模块由温度传感器、MAX6675、单片机及nRF2401组成，温度接收存储模块由单片机、nRF2401、MAX232串口芯片和上位机组成。MAX6675采集到的温度数据经单片机计算处理之后通过nRF2401无线发送，温度接收存储模块接收无线数据包，对数据进行校核后将温度值发送到数据采集上位机。数据采集计算机将接收到的温度数据实时显示并在计算机中保存。应用表明，系统具有体积小、重量轻、抗干扰强的特点，满足鼓式制动器温度测量的需求。

Design of Temperature Monitoring System for Drum Brake Based on nRF2401

In view of the difficulty of temperature measurement for drum brake, a drum brake temperature measurement system based on wireless data transmission was designed. It consists of two modules: the temperature data acquisition and transmission module and the temperature data receiving and storage module. The temperature data acquisition and transmission module is installed in the brake drum and rotates with the drum brake. The temperature data receiving and storage module is installed in the driver's cab. The temperature data acquisition and transmission module consists of temperature sensors, MAX6675, a singlechip and nRF2401. The temperature data receiving and storage module consists of a singlechip, nRF2401, MAX232 serial communication chip and the host computer. The singlechip treats the temperature data collected by MAX6675 and transmits the temperature data in the form of wireless communication packets using nRF2401. The temperature data receiving and storage module receives the wireless packets, checks their validity, and transmits them to the host computer, where they are displayed and saved. Its applications indicate that the system enjoys features of small size, light weight and strong anti-jamming ability, and can meet the requirement of temperature measurements for drum brake.