基于OP07和LTC1543温度采集模块的设计  

Design of temperature acquisition module based on OP07 and LTC1543

作　　者：石飞飞[1] 马辰[1] 

机构地区：[1]北京林业大学理学院,北京100083

出　　处：《电子设计工程》2010年第12期57-59,共3页Electronic Design Engineering

摘　　要：为了实现对温度高精度、高速度的采集及降低设计成本,设计了一种简单可行的温度采集模块。传感器输出原始信号的幅度很微弱,采用OP07高精度运算放大器组成了信号调理电路,实现了对温度传感器输出电压的放大。此外,为了使单片机能对采集的温度信息进行有效地处理,使用TLC1543模数转换芯片实现了从模拟信号到数字信号的高速转换。实践证明,在AT89C52单片机的控制处理下,此温度采集模块能够稳定有效地进行温度的采集,测量误差小。In order to speedly achieve highly accurate temperature and reduce the design cost, this paper presented a simple and feasible temperature acquisition module. Because the original signal＇s amplitude output by sensor is weak, the signal conditioning circuit consists of OP07 precision operational amplifier, achieving the amplification of the output voltage from temperature sensor. In addition, to effectively process the temperature information by MCU, this design uses TLC1543 getting digital signals from analog signals by high-speed conversion. Practice proves this temperature acquisition module controlled by AT89C52 MCU can stably and effectively acquire temperature information, the measurement error is small.

关 键 词：温度采集 NTC热敏电阻 OP07 TLC1543 

分 类 号：TN602[电子电信—电路与系统]