基于ATCAN单片机高炉烧结配料系统信号采集部分.doc

题 目：基于AT90CAN128单片机高炉烧结 配料系统----信号采集部分 基于AT90CAN128单片机高炉烧结配料系统----信号采集部分 摘 要 高炉烧结配料系统是指依靠调节带式输送机的速度来控制各种物料的进料量，完成对各种熟料的配比。它将工业现场的各种物理量（模拟信号）通过传感器变为电信号，再经过A/D进行采样转换为数字量后，由计算机进行存储、处理、显示或打印。整个系统由信息采集部分、PID过程控制部分和CAN总线通信三大部分来实现其功能，还可以在显示屏上查询各种物料的给定流量、实际流量及其误差等使用情况，尽早发现和消除隐患，实时处理故障，进一步提高了系统的可靠性。我们的设计主要是针对信号采集部分的设计。 本系统是以AT90CAN128单片机为核心部件组成的一个简单数据采集系统。该系统的主要部件有：AT90CAN128、ULN2803、VFD、CS5523、LED、继电器等。AT90CAN128是一款低功率CMOS 8位的微处理器，这些功能为我们系统的实现提供条件。 该系统不但能对单路信号进行采集，而且还可以对多路信号进行循环采集，最多可采集4路。既可以采集流量信号，同时也可以对开关等信号进行采集。该系统性能稳定，具有一定得的抗干扰性，其采集精度也能够满足要求。 关键词：AT90CAN128；配料系统；电子皮带称；信号采集 Sintering blast furnace system based on AT90CAN128 single-chip microcomputer ------ Signal acquisition Abstract Sintering blast furnace system is relying on regulation to control the conveyor speed into the charge of a variety of materials, to complete a variety of clinker ratio. It can change all kinds of physical quantities of the industrial site (analog signals) into electrical signals through sensors, and then, after A/D sample is converted to digital value, to store(information), process, display or print in a computer or system . The entire system is make up of information collection, PID control and CAN bus communication , achieveing its main functions, it also can display information such as a given flow, the actual flow and its error, find out hidden danger and remove it early,further improve the reliability of the system.Our design is mainly directed against part of the design of signal acquisition. The system is based on AT90CAN128 single-chip microcomputer as the core components of a simple data acquisition system. The main components of the system are: AT90CAN128、ULN2803、VFD、CS5523、LED and so on。AT90CAN128 is a low-power CMOS 8-bit microprocessors, which functions used for our system to provide the conditions to achieve the design. This system is not only to do single-channel signal acquisition, but also on the cycle of multi-channel signal acquisition, even up t