2013•China Medical DevicesRequires access

Design and Realization of Multi-channel Temperature Monitoring System Based on AT89S52 Singlechip

Wenwei Zhang

Abstract

Objective To develop a multi-channel temperature monitoring system based on AT89S52 singlechip to monitor environmental temperature.Methods This system is composed with the master control regulator,temperature gathering electric circuit,temperature display circuit,alarm control circuit and keyboard entry control circuit.AT89S52 singlechip is used as the control and data processor,intelligent temperature sensor DS18B20 is used as temperature detection,LED digital display tube is used as temperature demonstration output unit.Results Through detection,the measuring range is large(-50~+110℃),and the measuring accuracy is high(error is within 1℃).Conclusion The hardware electric circuit is simple,the cost is low,reading could directly display,and the system is easy to operate.

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Key concepts: ALARM, Realization (probability), Reading (process), Channel (broadcasting), Control unit, Temperature control, Computer hardware, Voltage