College of Informatics & Electronics, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, 310018, China

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Abstract—Temperature is an important factor to keep the reliability of processors at run time. This paper presents a new method to perform the temperature controlling for processors working in constrained sealed device spaces. This method first models the working environment of a processor using Finite Element Analysis (FEA), and then finds the safe working frequency and the safe working time of the processor. Tasks are scheduled to work at suitable running frequencies at run time. Experimental results are as the follows: 1) The temperature of processors is higher in a constrained sealed space than that in an open space; 2) the temperature-safe running time can be obtained by temperature variation curves; and 3) the stability of systems can be kept by controlling tasks’ running speeds when using the dynamic voltage/frequency scaling (DVFS) technique.

Index Terms—Dynamic thermal management, embedded systems, constrained space, DVFS

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Cite: Haixia Xia, Yu Zhang, "A Dynamic Temperature Controlling Method for Processors in Constrained Sealed Spaces," Journal of Computers vol. 8, no. 11, pp. 3066-3071, 2013.