计算机科学与技术单片机55,计算机科学与技术专业外文翻译--基于单片机的多点温度检测系统的设计.doc...

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计算机科学与技术专业外文翻译--基于单片机的多点温度检测系统的设计.doc18页

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Based on SCM multi-functional temperature testing system design

1、preface

With the development of society and the technological progress, people pay more and more attention to the importance of temperature detection and display. Temperature detection and status display technology and equipment has been widely applied in industries, products on the market emerge in endlessly. Temperature testing and also gradually adopt the automatic control technology to realize the monitor. This topic is a temperature testing and status of the monitoring system.

2、System solutions

This system USES the monolithic integrated circuit AT89C51 as this system. The whole system, the hardware circuit including power supply circuit, sensor, the temperature display circuit circuit, upper alarm circuit . The alarming circuit can be measured in upper temperature range, screaming voice alarm. The basic principle for the temperature control DSl8B20: when the temperature signal acquisition to after temperature signal sent to handle, AT89C51 temperature to LCD screen, SCM according to initialize the upper temperature setting, namely, if the judgement of temperature than the highest temperature cooling fan is started, If the temperature is less than the lowest temperature setting on alarm device.

3、The system hardware design

(1)AT89C51 SCM are introduced

The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash programmable and erasable read only memory (PEROM) and 128 bytes of data random-access memory(RAM). The device is manufactured using ATMEL Co.’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pin-out. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the ATMEL Co.’s AT89C51 is a powerful microcomputer which provides a highly-flexible and cost-effect

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