【摘要】 压铸铝合金是汽车生产的重要材料,控制压铸工艺参数对保证铝合金性能和产品质量具有重要的意义。为建立压铸铝合金成分计算机网络系统,其技术关键是压铸工艺参数的测量和数据传输。提出了一种高性能价格比的压铸工艺参数在线检测及数据传输系统,由AD289线性隔离放大器隔离并提取工艺参数传感器的模拟信号,AT89C52单片机控制MAX187A/D转换器对信号进行采集,通过MAX488通信接口电路实现了单片机与工业控制机之间的远距离数据通信。实际使用和实验表明:系统具有较高的测量精度和数据通信可靠性。更多还原

【Abstract】 Diecasting aluminum alloy is an important material of the automobile producing.Controlling technique parameters to guarantee the performance of the diecasting aluminum alloy and the quality of products has important meanings.For settingup computer network system of the composition analysis of diecasting aluminum alloy,the technology key of them is measurement and data transmission of the technique parameters of diecasting.Proposed a high performancecost ratio online detecting and longrange communication system of diecasting technique parameters.AD289 linear segregation amplifier is used to isolate and extract analog signals of technique parameters.MCU AT89C52 controls Max187 A/D converter to gather signals.MAX488 communication port circuit realizes the longrange communication between MCU and industrial computer.In practical use and experiments,the system has showed its high precision and reliability of data communication.更多还原