说明书 电子皮带秤设计_学位论文.doc

毕业设计说明书 摘要 随着传感器、电子技术和微机技术的崛起，称重技术得到了迅速发展，称重装置在数字化，智能化等方面有长足的进步，称重装置的研究与开发也进入了一个新的阶段。皮带秤等衡器更是作为一种新兴的高技术产业而受到世界各国的普遍关注，进一步采用新技术，开发各种自动称重系统，提高动态称重的准确度，加强网络功能是当今各国发展的重点。我国的衡器产业已初具规模，但高档次衡器产品技术水平落后，积极开发具有自主知识产权的高档次衡器产品对发展我国的衡器产业具有重要意义。本课题就是针对电子皮带秤自动称重系统展开的。 皮带秤是安装在皮带输送机的适当位置上，对散状物料自动地进行连续、累计称量的计量器具。它广泛应用于：散料贸易结算、生产工艺流程中的配料计量及检测控制。 采用双CPU结构，两个CPU之间通过串口进行通讯。两个CPU之间的这种弱联系，不但能提高控制的实时性，而且能有效的提高系统的可靠性。 本文所述皮带秤微机配料系统以MCS-51系列单片机为下位机，以电子皮带秤为计量设备，单片机控制皮带秤，整个系统以AVR单片机作为上位机进行集中管理。该系统对运行环境要求低，精度稳定，质量可靠，易于管理。 关键词: 电子皮带秤，串行通信，AVR单片机 Abstract With the sensor, electronic technology, computer technology and the rise of weighing technology have developed rapidly, weighing device in digital, intelligent connection is a great improvement, weighing device research and development has entered a new stage. Weighing scales and other belt is emerging as a high-tech industries and countries around the world, the widespread concern, further introduction of new technology, the development of automatic weighing system to enhance the dynamic weighing accuracy, strengthen the network function is the focus of the development of all countries. Chinas weighing industry has begun to take shape, but the high-end products weighing technical backwardness, proactively develop our own intellectual property rights in high-grade products weighing on the development of Chinas weighing industry is of great significance. The issue was aimed at the electronic belt weigher’s automatic weighing system proceed. Belt weigher is installed on the conveyor belt in the appropriate place, the bulk of the material for automatic continuous, weighing a total of measurement apparatus. It is widely used: Bulk trade settlement, the production process of batching control and detection measures. Dual CPU, the CPU between the two through the serial port communication. 2 CPU between the weak links will not only enhance control of the real-time, but can effectively improve the reliability of the system. This paper described