毕业设计：基于单片机的电子秤系统设计.doc
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THE ELECTRONIC SCALE DESIGN BASED ON MICROCONTROLLER
ABSTRACT
With the application of micro-electronics technology, tradition ponderation instrument used in market has been not satisfaction with hunman requirements already. In order to make up for the traditional apparatus shortcoming, we improve the apparatus's control system with intelligence and automation. This system is mainly controlled by microcontroller, the section of height measurement accomplish by supersonic sensor, the section of weight measurement accomplish by weight sensor and A/D transformer, this apparatus have many characteristic such as having more function, consume less energy, small and move easily, low price, measure precisely, the speed is quick, automatic work without people and so on.
The system is mainly controlled by the microcontroller AT89S52, the periphery is consist of the circuit of clock and calendar, the circuit of measure height and weight, the circuit of display and print, all of these comprise the circuit board of the intelligent apparatus of height and weight. It can achieve all function of the apparatus.
KEYWORDS: microcontroller£¬ponderation¨Csensor£¬A/D converter£¬LCDdisplay
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1.2 µç×Ó³ÓµÄ×é³É 3
1.2.1 µç×ӳӵĻù±¾½á¹¹ 3
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THE ELECTRONIC SCALE DESIGN BASED ON MICROCONTROLLER
ABSTRACT
With the application of micro-electronics technology, tradition ponderation instrument used in market has been not satisfaction with hunman requirements already. In order to make up for the traditional apparatus shortcoming, we improve the apparatus's control system with intelligence and automation. This system is mainly controlled by microcontroller, the section of height measurement accomplish by supersonic sensor, the section of weight measurement accomplish by weight sensor and A/D transformer, this apparatus have many characteristic such as having more function, consume less energy, small and move easily, low price, measure precisely, the speed is quick, automatic work without people and so on.
The system is mainly controlled by the microcontroller AT89S52, the periphery is consist of the circuit of clock and calendar, the circuit of measure height and weight, the circuit of display and print, all of these comprise the circuit board of the intelligent apparatus of height and weight. It can achieve all function of the apparatus.
KEYWORDS: microcontroller£¬ponderation¨Csensor£¬A/D converter£¬LCDdisplay
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3.1.3 AT89S52µÄ×îСϵͳµç·¹¹³É 17
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3.3 Êý¾Ý²É¼¯²¿·Öµç·Éè¼Æ 18
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3.4 ÏÔʾµç·ÓëAT89S52µ¥Æ¬»ú½Ó¿Úµç·Éè¼Æ 22
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