Abstract
Although the amount of cooking fumes can be estimated based on the output of the piezoelectric transducer, a proper translation from the response of the transducer to the exhaust rate remains to be implemented. In this paper, a smart translation method is used to generate a ventilating signal for the release of cooking fumes based on the output of a piezoelectric transducer. The start and end states of the fume release were computed according to the temporal variation of the output of the piezoelectric transducer, as determined with four successive samples. These detected states were mapped to a 1-bit digital ventilating signal, which then controlled the exhaust fan. Results from a demonstrated range hood system showed that the proposed method enhances the detection of cooking fumes and provides an effective control of the exhaust fan
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