Network sensor of temperature & humidity based on RS485 interface

Author

Lv Zhigang ; Wang Peng

Author_Institution

Sch. of Electron. & Inf. Eng., Xi´an Technol. Univ., Xi´an, China

Volume

4

fYear

2010

fDate

20-22 Aug. 2010

Abstract

RS485 is an important communication protocol during CPU and external communication device, which is widely used in monitor-control system and project application. DS18B20 is used to test temperature in the sensor of temperature and humidity based on 89S52 MCU. ADC0831 is extended to convert the output signal of humidity sensor-NKHT, from which humidity value can be got. The value of temperature and humidity not only can be displayed on LCD, but also can be output using RS485 interface, from which network control system for temperature and humidity can be accomplished easily by users. The sensor has many advantages such as high precision, low cost, small volume, easy to construct network and so on.

Keywords

humidity sensors; network interfaces; protocols; telecommunication control; temperature sensors; wireless sensor networks; 89S52 MCU; ADC0831; CPU; DS18B20; LCD; RS485 interface; communication protocol; external communication device; humidity sensor-NKHT; monitor-control system; network control system; network sensor; project application; temperature sensor; Educational institutions; 89S52 MCU; ADC0831; DS18B20; NKHT humidity sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Computer Theory and Engineering (ICACTE), 2010 3rd International Conference on

Conference_Location

Chengdu

ISSN

2154-7491

Print_ISBN

978-1-4244-6539-2

Type

conf

DOI

10.1109/ICACTE.2010.5579634

Filename

5579634