摘要
铁路计轴器是保证列车安全运行的重要设备。针对传统有源磁钢计轴方法精度低的缺点,设计了一种在过轮信号固定位置来发送计轴脉冲的高精度计轴器,并采用双DSP并行工作模式来提高系统的可靠性。首先,介绍了计轴器的检测方案,然后以TMS320F2812为主控芯片设计了计轴器的硬件电路,通过门电路实现了计轴脉冲的可靠输出,最后进行了系统软件部分的设计,主要包括过轮信号的检测和计轴脉冲发送位置的计算。实际测试结果表明,系统具有精度高、可靠性高、抗干扰性强等特点,具有较高的使用价值。
Railway axle counter was one of the important equipment to ensure the safety of train running.The traditional active magnetic steel axle counter method has a disadvantage of low accuracy.For this reason,a high-precision axle counter which send counting pulse in a fixed position of wheel signal was presented.In addition,double DSP parallel working mode was used to improve the rehability of the system.Firstly,the detection scheme of the system was presented.Then hardware circuit of the axle counter was designed with TMS320F2812,and realizes the reliable output of the axle pulse through the gate circuit.Finally,software programming was completed based on the hardware design,mainly includes the wheel signal detection and position calculation for sending counting pulse.Actual test results show that,the system has advantages of high precision,high reliability and strong resistance to interference,and it has a high practical value.
出处
《自动化与仪表》
北大核心
2013年第11期9-12,共4页
Automation & Instrumentation
