摘要
应用于工业环境中的各种仪器检测设备的抗干扰能力是衡量一台仪器质量好坏的重要指标。针对应用于轨道检测设备的增量式旋转编码器计数系统,通过对编码器输出信号进行去抖动脉冲输出,然后在对信号实现四倍频细分的情况下,利用STC增强型单片机的可编程计数器阵列(PCA)模块的捕获输入有效沿的功能,在输入信号的上升沿和下降沿均产生中断,从而实现对增量式编码器输出脉冲的计数工作。该系统具有较高的抗抖动和频率响应能力,可实现可逆计数。
Anti-interference ability of many instruments is an important indicator to measure an instrument, especially when they are used in industrial environments. Based on the incremental rotary encoder counting system, which was used in rail testing equipment,through the use of anti-jitter pulse output circuit, and then with the fourth harmonic subdivision of the signal, based on the function of STC enhanced MCU-capture valid edge function of PCA（ programmable counter array）module ,an interrupt was generated at the rising and falling edges of the signal, so the counting operation of the incremental encoder can be achieved. This system has a high resistance to jitter and frequency response capability, and can achieve reversible count.
出处
《仪表技术与传感器》
CSCD
北大核心
2013年第9期44-46,共3页
Instrument Technique and Sensor
基金
国家自然科学基金项目(NO.51065021)
