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30 years of reform and opening up , China's industrial and agricultural achieved important development, industry production as the market continues to grow , the product batch also gradually expand ; many types of industrial weighing instruments , and wide range of applications , the development of the national economy has a huge the impact ; weighing instrument is a field of metrology , measurement , like other high-tech is the focus of competition between the countries . This article industrial weighing instruments are mainly used in the field of quantitative packaging weighing , metering equipment for the mechanical, electrical , electronic , computer , automatic control together . The weighing instrument performance of a direct impact on the production and economic efficiency of enterprises . This design of weighing instruments to achieve a high weighing accuracy and high weighing speed to meet the needs of the industrial production . This design of weighing instruments used in the quantitative packaging of feed products . According to the overall design of the program , the article gives the controller 's hardware and software design of industrial weighing instruments , including CPU type selection , the design of the overall framework of the the peripheral unit circuit design , the design of the switching power supply and software design and system programs . The weighing instrument is intelligent dynamic instrumentation , control entire weighing system work , reducing many of the human cost . The main work of this paper : 1 . Discusses the status quo and development trend of industrial weighing instruments , put forward the background and significance of the topic , and my main research content . Analysis of industrial weighing instruments designed the overall program , including the principle of weighing systems and weighing display controller hardware and software framework . PCF8563 clock chip by I ~ 2C to achieve real-time clock . Analysis of switching power supply of the entire hardware system design of the whole process , the power to produce the first basic multiple outputs , the way in which feedback to ensure stable voltage outputs can get a more precise voltage circuit switching , industrial weighing instruments the main control board , set the display board safe and stable power supply . 5 by the CS5532 chip via the SPI bus protocol for data acquisition , including hardware and software design . Analysis of the human - computer interface design , industrial weighing instruments specific display windows, buttons and LEDs . Finally, the full text of the work is summarized, and pointed out the future direction can further explore .
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