2、直接读取被测温度值，进行数据转换，能够设置温度上下限来设置报警温度。并且在到达报警温度后，系统会自动报警。 本文设计是从测温电路、主控电路、报警电路等几个方面来分析说明的。该器件可直接向单片机传输数字信号，便于单片机处理及控制。另外，该温度计还能直接采用测温器件测量温度。从而简化数据传输与处理过程。此设计的优点主要体现在可操作性强，结构基础简单，拥有很大的扩展空间等。 关键词：单片机；温度传感器；温度计；报警第22页共22页长春大学课程设计纸AbstractWith the rapid development of modern information
3、technology and the gradual transformation of traditional industries to achieve, automatic temperature detection and display systems are widely used in many fields. People in the temperature measurement accuracy, convenient, rapid, and has a growing demand. This article was design
4、ed and produced a simple thermometer. This design uses a microcontroller STC89C52 and temperature sensor DS18B20 automatic temperature control system formed can be arbitrarily set the temperature according to the actual value and for automatic control. In this design using the STC
5、89C52 microcontroller as the main control device, DS18B20 as an LCD digital temperature sensor tube through the serial transmission of data, to achieve temperature display. DS18B20 measured by direct reading temperature values, data conversion, to set the temperature to set the al
6、arm on the lower temperature. And the temperature reaching the alarm, the system will automatically alarm. This design is from the temperature measurement circuit, main control circuit, alarm circuit, and several other aspects of the note. The device can transmit digital signals
7、directly to the microcontroller, easy to handle and control MCU. In addition, the thermometer temperature measurement device can be used directly to measure temperature. The major advantages of this design is reflected in operable structural basis is simple, lots of expansionspace
