基于红外通信的温度采集系统设计

Design of Temperature Detection System Based on Infrared Communication

温度检测在科学研究和社会生活中极为重要。随着科学技术的不断发展,温度检测需求也日趋增加。为了解决生物及化学实验中密闭、高温、高压、粉尘等特殊环境下不宜直接进行温度检测或者只能采取有线形式进行温度检测的问题,设计了一种基于红外通信的温度采集系统。该系统将DS18B20传感器作为温度传感器,用51单片机采集温度后从串口输出,再通过调制38 kHz载波形成红外信号;接收端采用VS1838B一体化红外接收头接收温度信号,最后由LCD1602器件显示温度信息。测试结果表明,本文系统能够实现无接触式环境温度检测,满足实验要求。

Temperature detection is very important in scientific research and social life. With the increasing development of science and technology, the demand for temperature detection is increased quickly. To solve the problem that temperature detection can not be carried out directly or only can be carried out in cable form in some special circumstances such as sealing, high temperature, high pressure and dust in biological and chemical experiments, a temperature acquisition system based on infrared communication is designed. In the system, a DS18B20 sensor is used as the temperature sensor and a 51 single chip microcomputer is used to collect temperature signals. The collected temperature signals are output through a serial port and are used to modulate the 38 kHz carrier so as to form infrared signals. The infrared signals are received by an integrated infrared receiving head VS1838B in the receiver. Finally, the temperature information is displayed by a LCD1602 device. The experimental result shows that the system can implement the non-contact detection of environment temperature and meet the experimental requirement.