Patent ID: 9417107
Filing Date: 2016-08-16
CPC Classification: A24F,G01F

Claim Text:
1. A multi-sensor control circuit used in an electronic cigarette, comprising: a battery; a control module; at least two inhalation sensors; and at least two unidirectional circuits corresponding to the inhalation sensors; wherein an output terminal of each of the inhalation sensors is connected to an input terminal of corresponding one of the unidirectional circuits, and output terminals of the unidirectional circuits are all connected to a same input pin of the control module; the battery is connected to the control module and each of the inhalation sensors; each of the inhalation sensors is configured to output a sensing voltage signal to the corresponding one of the unidirectional circuits when the inhalation sensor senses airflow; each of the unidirectional circuits is configured to filter the sensing voltage signal received from corresponding one of the inhalation sensors to generate a unidirectional voltage signal, and output the unidirectional voltage signal to the input pin of the control module; the control module is configured to control the electronic cigarette to work upon receiving one or more of the unidirectional voltage signals outputted from one or more of the unidirectional circuits; each of the unidirectional circuits includes a diode, and the multi-sensor control circuit further include a pull-down resistor; an anode of the diode of each of the unidirectional circuits is connected to one of the inhalation sensors corresponding to the unidirectional circuit, and a cathode of the diode of each of the unidirectional circuits is connected to one end of the pull-down resistor and the input pin of the control module; the other end of the pull-down resistor is grounded.