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9.本文以单片机作为执行器件,采用数字电路和模拟电路结合的方式设计系统各部分的电路。在控制方面,以单片机——AT89C51为核心,将温度传感器和蜂鸣报警技术相结合,实现了激光器的温度监测与报警系统的设计。
10. The DS18B20 Digital Thermometer provides 9 to 12-bit (configurable) temperature readings which indicate the temperature of the device.
Information is sent to/from the DS18B20 over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS18B20.Power for reading,writing,and performing temperature conversions can be derived from the data line itself with no need for an external power source.
Because each DS18B20 contains a unique silicon serial number,multiple DS18B20s can exist on the same 1-Wire bus. This allows for placing temperature sensors in many different places. Applications where this feature is useful include HVAC environmental controls,sensing temperatures inside buildings,equipment or machinery,and process monitoring and control.
11.The AT89S52 is a low-power,high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory.The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction set and pinout.The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer.By combining a versatile 8-bit CPU with in-system programmable Flash on a monolithic chip,the Atmel AT89S52 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.
参考文献
[1] 朱定华.微机原理、汇编与接口技术[M].北京:清华大学出版社,2005.
[2] 张毅刚.单片机原理及应用[M].北京:高等教育出版社,2010.
[3] 童诗白,华成英.电子技术基础.(模拟部分)[M].北京:高等教育出版社,2006.
[4] 谭浩强,张基温.C语言程序设计教程[M].北京:高等教育出版社,2007.
[5] 张靖武,周领彬.单片机系统的Proteus设计与仿真[M].北京:电子工业出版社,2007.
[6] 李全利.单片机原理及接口技术[M].2版.北京:高等教育出版社,2009.
[7] 王勇,叶郭范.基于AT89S51的便携式实时温度检测仪[J].仪表技术与传感器,2006.(04): 6
[8] 刘洪恩.利用热电偶转换器的单片机温度测控系统[J].仪表技术,2005,(02): 21-22.
[9] 张利芳.基于单片机的激光器温度监测与报警系统设计[J].电子世界,2014,(05): 133.
[10] Dallas Semiconductor Corporation DS18B20 Programmable Resolution 1-Wire Digital Thermometer [R]. Product Datasheet,2008.
[11] AT89S52 PDF/datasheet from atmel,2008.
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