Design of Wireless Monitoring and Pre-warning System of Brake Temperature for Truck Safety Operation

摘要

In order to detect truck multi-brake temperature in real time, achieve hierarchical warning of high-temperature state, assist driver in completing brake behavior and ensure the safety of the truck brake, a wireless monitoring and pre-warning system of brake temperature for truck safety operation was developed. Based on MCU, milli-volt level voltage signal produced by detecting the brake temperature through PT1000 platinum thermal resistance temperature sensor was sent to LM2904 for signal amplification. Then, the amplified signal was converted to a digital signal by ADS1115 and sent to the receiver master chip and displayed through E31-TTL-50 wireless module. After comparing with the critical value, the system will carry out the hierarchical alarm. This system realized the detection and display of signal in real time and the remote monitoring. In the chapter, the design of the system in hardware and software was introduced. Furthermore, an experiment was conducted to ensure the effectiveness of the system.