Patent ID: 9137870
Filing Date: 2015-09-15
Classification: H04B,H05B

Abstract:
1. A method for communication between an electronic module ( 100 ) and a detection sensor ( 200 ), said detection sensor comprising a light source (LED 10 ) and being supplied with current by way of a supply line (W 10 ) connected to a voltage source (VBAT), said electronic module being suitable for measuring the modulations of the intensity of the current flowing on said supply line, characterized in that the detection sensor ( 200 ) drives a gradual turning on/turning off of the light source (LED 10 ) by way of a first modulation of the intensity of the current flowing in said light source in such a way that: the light source (LED the light source (LED the light source (LED the light source (LED and in that when a predefined event (D) is detected by the detection sensor ( 200 ), said detection sensor notifies the electronic module ( 100 ) with an information item according to which the event (D) has been detected, in the form of a second predefined modulation of the intensity of current flowing in the light source (LED 10 ) with respect to a high or low state depending on whether the light source (LED 10 ) is turned on or turned off, with the proviso that prior to this notification, if the light source (LED 10 ) is in the process of turning on, respectively of turning off, the gradual turning on, respectively the gradual turning off, of said light source is interrupted so as to bring the intensity of current flowing in said light source to the high state, respectively to the low state.