无极绳连续牵引车运行状态监测及过速保护系统的研究

Research of Running State Monitoring and Over-speed Protection System of Endless-rope Continuous Towing Vehicle

针对目前无极绳连续牵引车运行状态监测及过速保护装置存在的问题,提出了一种无极绳连续牵引车运行状态监测及过速保护系统的设计方案。该系统采用上-下位机结构,基于LabVIEW的上位机实现参数设置、数据存储、运行状态显示和远程控制等功能;下位机首先采集无极绳连续牵引车的运行速度信号、制动系统蓄能器压力信号和制动油缸压力信号,然后通过单片机运用一定算法对这些数据进行分析、处理和判断,一旦出现过速、欠压、断绳等故障,下位机会立即输出相应的故障信号;上、下位机以无线方式通信。实际应用表明,该系统可实现对无极绳连续牵引车运行状态的有效监测和过速故障的正确判断。

In view of problems existed in current running state monitoring and over-speed protection device of endless-rope continuous towing vehicle,the paper proposed a design scheme of running state monitoring and over-speed protection system of endless-rope continuous towing vehicle.The system uses structure of upper-lower computer.The upper computer based on LabVIEW realizes functions of parameter setting,data storage,running state display and remote control.The lower computer firstly collects signals of running speed and pressure of accumulator of braking system and brake oil-cylinder,then analyzes,processes and judges the signals with some algorithm by use of single-chip microcomputer.The lower computer can output corresponding fault signal if the vehicle has faults of over-speed,under voltage and broken rope.The upper computer communicates with the lower computer with wireless mode.The actual application showed that the system can realize effective monitoring for running state and correct judgment for over-speed fault of the vehicle.