一种车用轴瓦自动检测装置的设计与实现

Design and implementation for a new bearing bush measurement system based on single-chip microcomputer

针对传统轴瓦检测机测量方式的缺陷,设计并实现了一种以AVR单片机ATMEGA16为基础的数字化轴瓦检测系统,该系统采用双摆动压块机构,双面加载6表测量的方式能够更准确地测量轴瓦平行度和高出度;电路设计上,以LVDT位移传感器取代机械千分表,选用内部集成多路ADC的AVR单片机作为控制器,以支持汉字显示的液晶点阵作为人机界面,不仅能够自动测读和自动判断,避免人工读数判断的主观差错,而且系统可靠性高、成本低,具备良好的人机交互性,同时RS485通讯接口的实现也为较远距离的数据传输和联网提供硬件支持。

A new type of bearing bush measurement system, which is based on AVR single-chip microcontroller ATMEGA16, is designed and implemented in this paper. Compared with traditional bearing bush measurement instrument, this system can apply loads on two edging surfaces via dual swing mechanism, which make beating bush squeezed evenly, and measure height and parallelism great more efficiently and accurately. With LVDT displacement sensors as substitute of dial gauges, and microcontrollerATMEGA16, in which 10-bit multi-ADC are integrated, and LCM which can show Chinese characters, this measurement system not only can measure beating bush and determine it＇s acceptability automatically, without the influence of operator＇s subjective factors, but also has low cost, convenient human-machine interface, and good stability. Furthermore, realization of interface of RS485 in hardware design can meet the demand of industrial network, in order to realize the long-distance transmission of the measurement data form multi-equipments.