| The temperature monitoring system is a kind of monitoring system applied widespreadly. In the process of industrial production, the temperature monitoring system is often applied in the place where the surrounding environment is bad, such as the mine and the factory, etc. It is very important to guarantee the high reliability of the monitoring system and reliable communication in the strong electromagnetic interfere (EMI). Therefore, many ways to improve the reliability of the monitoring system have been studied, such as enlarging the bandwidth, enhancing the power, reducing the noise, or using the error detecting code and error correcting code, etc.In order to satisfy the requirement of system reliability, the purpose of low cost and obvious effect can be reached by using an effective method of error detecting and error correcting. At present, RS code is one of the error correcting codes applied most widespreadly in the field of error-control. It has strong capability of correcting both burst errors and random errors. This subject studies a method of using RS code in the temperature monitoring system, solves the problems that the errors often occur in communicaion systems of the strong EMI enviroment, and improves the reliability of the system.This paper discusses the encoding-decoding theory of RS code, implements the algorithm of RS(16,10) encoding and decoding on PC and ARM-based embedded system platform respectively, and applies it to the temperature monitoring system. The temperature monitoring system designed in this subject is the PT100 temperature monitoring system based on the ARM embedded micro-processor system. The PT100 thermal resistance used as the temperature sensor to collect temperture. ARM embedded system is used to conduct the data processing, encode, decode, pack, unpack the temperature value and related information. PC is used to encode, decode, pack, unpack, display and process the related information. And serial port is used to communicate between ARM... |
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