第1个回答 2011-04-29
In recent years, with very large scale integrated circuit technology development, the SCM has been developed quickly, with its own small volume, low cost, strong anti-interference characteristics and were widely used in data collection, automatic control in the field, it let people's life more comfortable, more simple. This design USES the STC89C51 single chip microcomputer as the data processing and control unit, use digital temperature sensor DS18B20 collection temperature, through real-time display LED digital tube temperature, and according to the change of the temperature automatic control fan and start-stop the size of the winds. Users can choose according to the environmental conditions of temperature, start-stop fan of fan's intelligent control realization. This design system mainly adopts digital chip, greatly improved the stability of the system.
第2个回答 2011-04-29
In recent years, with the development of VLSI technology, SCM has been the rapid development followed, with its own small size, low cost, the characteristics of strong anti-interference has been widely used in data acquisition, automatic control, etc. field, it makes people's lives more comfortable and easier. This design uses STC89C51 microcontroller as data processing and control unit, with digital temperature sensor DS18B20 collecting temperature, real-time through the LED digital display temperature and temperature changes can start and stop and automatic control of fan speed for size. Environmental conditions, the user can set up their own start and stop the fan temperature to achieve intelligent control of the fan. This design system is mainly used in digital chip, greatly improved the stability of the system work.
第3个回答 2011-05-02
n recent years, with very large scale integrated circuit technology development, the SCM has been developed quickly, with its own small volume, low cost, strong anti-interference characteristics and were widely used in data collection, automatic control in the field, it let people's life more comfortable, more simple. This design USES the STC89C51 single chip microcomputer as the data processing and control unit, use digital temperature sensor DS18B20 collection temperature, through real-time display LED digital tube temperature, and according to the change of the temperature automatic control fan and start-stop the size of the winds. Users can choose according to the environmental conditions of temperature, start-stop fan of fan's intelligent control realization. This design system mainly adopts digital chip, greatly improved the stability of the system. (谷歌翻译)
参考资料:绝对原创