Error Processing for Acquisition System of Heating Flux of Building Envelope

Guang He Cheng; Rui Rui Sun; Lu Yue Han

doi:10.4028/www.scientific.net/AMM.678.228

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 678Error Processing for Acquisition System of Heating...

Error Processing for Acquisition System of Heating Flux of Building Envelope

Abstract:

After excluding the usual device error, environmental error caused by electromagnetic interference persists in the acquisition system of heating flux of building envelope. This error makes the system instability and causes relatively large deviations of heat flux data, affecting building energy conservation measurement. To counter the problem of error in the data acquisition system, a new software filtering algorithm is put forward. The algorithm combines the idea of the mean and median filtering method, and specific algorithm formula and algorithm steps are given in this paper. Experimental results showed that the algorithm effectively improved the accuracy of data collection. For example, when I input 1mV into system from the sensor, average error of heat flux was decreased from 5.2% to 0.4%, and the maximum error was less than 2%.

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Periodical:

Applied Mechanics and Materials (Volume 678)

Pages:

228-232

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.678.228

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Online since:

October 2014

Authors:

Guang He Cheng*, Rui Rui Sun, Lu Yue Han

Keywords:

Energy Conservation Measurement, Error Processing, Filtering Algorithm, Heat Flux

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References

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