数字温度警报器的设计说明

中文摘要数字温度警报器是利用传感器检测温度。采纳数码管显示当前温度。当温度低于下限温度或者高于上限温度时系统发出报警声，从而起到测量和报警的功能。本系统以AT89C52 单片机作为主控系统，利用 DS18B20 数字温度传感器作为温度传感器件。通过四位共阳极数码管作为显示器件，通过单片机控制温度显示温度。并可以设置温度上下限，当温度不在设置的温度围，蜂鸣器发出报警声。分析了温度传感器的工作原理。系统硬件电路以与软件部分的设计。实际测试表明。该方案切实可行并已在许多通信领域得到广泛应用。关键词： 单片机，温度警报，DS18B20,AT89C52ABSTRACTIs to use digital temperature alarm temperature sensor detection. Using digital tube display the current temperature. When the temperature is lower than the floor temperature or higher than ceiling temperature alarm system, to measure and alarm function. This system with AT89C52 single-chip computer as the master control system, using DS18B20 digital temperature sensor as temperature sensor. Through the four digital tube as a display device, a total of anode, by single-chip microcomputer control temperature display temperature. And can set the upper and lower temperature, when the temperature is beyond the scope of the temperature of the set, alarm buzzer. Analyzed the working principle of temperature sensor. The system hardware circuit and software part of the design. The practical tests show that. The scheme is feasible and has been used widely in many fields of communications. Key words: single chip microcomputer, temperature alarm, DS18B20, AT89C52目录第一章 引言 …………………………………………………………………………1.1 概论 ………………………………………………………………………………1.2 设计方案与讨论容 ……………………………………………………………第二章 相关技术 ……………………………………………………………………1.1 温度检测芯片 DS18B20 …………………………………………………………1.2 ...