无线温度传感器课程设计

邮电与信息工程学院

现代测控技术

课程设计说明书

课题名称：无限温度采集系统

学生学号：**********

专业班级：09测控技术及仪器2班

学生姓名：**

学生成绩：

指导教师：***

课题工作时间：2012-6-20 至2012-7-4

摘要

无线温度采集系统是一种基于射频技术的无线温度检测装置。本系统由传感器和接收机，以及显示芯片组成。传感器部分由数字温度传感器芯片18B20，单片机89C52，低功耗射频传输单元NRF905和天线等组成，传感器采用电源供电；接收机无线接收来自传感器的温度数据，经过处理、保存后在LCD1602上显示，所存储的温度数据可以通过串行口连接射频装置与接收端进行交换。

数字单总线温度传感器是目前最新的测温器件，它集温度测量，A/D转换于一体，具有单总线结构，数字量输出，直接与微机接口等优点。既可用它组成单路温度测量装置，也可用它组成多路温度测量装置，文章介绍的单路温度测量装置已研制成产品,产品经测试在-10℃-70℃间测得误差为0.25℃,80℃≤T≤105℃时误差为0.5℃,T>105℃误差为增大到1℃左右。

关键词：温度采集系统；无线收发；温度传感器；89C52单片机；

Abstract

Wireless temperature acquisition system based on RF technology is a kind of wireless temperature detecting device. The system consists of the sensor and receiver, and display chip. The sensor consists of digital temperature sensor18B20 chip, chip 89C52, low power RF transmission unit NRF905 and antenna components, sensors using wireless power supply; the receiver receives from the temperature data, processed, preserved in the LCD1602 display, the stored temperature data can be through the serial port connected to the RF device and the receiving terminal exchange.

The digital single bus temperature sensor is the current measuring device, it sets the temperature measurement, A/D conversion in one, with a single bus structure, digital output, the advantages of direct interface with microcomputer. Not only can it consists of single channel temperature measuring device, it is also available to form a multichannel temperature measuring device, this paper introduces single temperature measurement device has been developed into products, products tested in -10℃-70 ℃measured between the error is 0.25℃,80 ℃≤T ≤105 ℃error is 0.5℃, T>105 ℃error in order to increase to about 1 ℃.

Key words: temperature acquisition system; wireless transmission; temperature sensor; SCM 89C52

目录

摘要.......................................................................................................................................................... I Abstract ................................................................................................................................................... II 一．设计要求.. (1)

二．设计原理 (1)

2.1．LabVIEW介绍 (1)

2.2. 采集系统的组成结构 (1)

2.2.1数字温度传感器DS18B20 (1)

2.2.2. 射频传输单元NRF905 (2)

2.2.3 .1602液晶显示芯片 (2)

三、系统工作原理及详细流程 (3)

3.1．DS18B02主要特性 (3)

3.2 . AT89S52单片机介绍 (6)

3.3 NRF905工作原理 (9)

3.3.1． nRF905工作模式 (10)

3.3.1． nRF905工作流程 (10)

四．无线温度采集系统的软硬件设计 (12)

五．上位机程序设计 (14)

5.1 LabVIEW前面板 (14)

5.2 后面板 (16)

六．系统调试与性能分析 (19)

七．设计总结 (20)

附录一 (21)

参考文献 (23)