基于ISA总线的活塞自动检测及分选机

Piston Automatic Measurement And Sorter Based on ISA Bus

介绍了一种基于ISA总线的活塞自动检测及分选机。该测量机利用电涡流传感器把活塞规定的三个断面直径尺寸转换为频率信号 ,用 82 5 3芯片对频率信号进行F/D转换 ,用并行接口芯片 82 5 5扩展I/O接口 ,通过ISA总线连接计算机 ,实现活塞三个规定断面直径尺寸的计算机数据采集。试验表明 ,该测量机测量精度可达±1 5 μm ,重复性达± 1 5 μm。

A piston automatic measurement and sorter based on ISA bus are introdu ced. The electric eddy sensors are used to convert the given diameters of 3 sect ions of the piston to frequency signals and the 8253 chip is used to make the tr ansform from frequency signals to data(F/D). The input/output interface is bui lt up by the parallel 8255 chip. The 8253 chip, the I/O interface and computer a re linked by ISA bus. The given diameters of 3 sections of the piston is collect ed by the computer. The experiments show that the accuracy of the machine reache s ±1.5μm and the repeatability ±1.5μm.