远程无线程控智能温度变送器的设计  

Remote wireless programmable intelligent temperature transmitter design

作　　者：刘定星 李志华[1] 陈琴[2] 司明[1] 徐信[1] 

机构地区：[1]中国地质大学(武汉)自动化学院,武汉430074 [2]江汉艺术职业学院,潜江433100

出　　处：《电子测量技术》2016年第7期141-144,共4页Electronic Measurement Technology

摘　　要：工业生产过程中有线通信常常带来布线困难、设备不灵活等问题,且现有的无线智能温度变送器数据传输距离较近,同时以往温度变送器量程调节多采用更换硬件电阻,步骤繁琐,给调试带来诸多不便。为了解决这些问题,提出了将3G技术和程控放大器引入到智能温度变送器中的方案,只需软件修改参数就可轻松实现量程可调。介绍了一种"程控放大器+A/D+STM32+D/A"模式的智能温度变送器,实现了远程无线程控智能温度变送器的设计。该温度变送器具备量程调节方便、3G无线通信、LCD1602实时显示等功能。整个电路设计简洁、精度较高、稳定性好,具有一定的实用价值和应用前景。Cable communication often brings some problems such as difficulty in wiring ,equipment flexibility is not high in the process of industrial production ,And the range of the existing wireless intelligent temperature transmitter transmits data is very close ,at the same time past temperature transmitter’ s range adjustment used to be changed resistance ,steps are tedious ,it brings much inconvenience to debug In order to solve these problems , this paper combines temperature transmitter with 3G technology and programmable gain amplifier .Modifying software parameters can easily adjust range .This paper introduces a kind of intelligent temperature transmitter which uses＂programmable gain amplifier ＋ A/D ＋ microprocessor ＋ D/A＂ model , realizing the design of wireless intelligent temperature transmitter .The temperature transmitter has many functions , such as its range can be adjusted , 3G wireless communication ,LCD 1602 real‐time display and so on .The whole circuit design is simple ,high precision and good stability ,having a certain practical value and application prospect .

关 键 词：温度变送器 STM32 3G技术 程控放大器 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]