| 摘要 |
<p>Method for communication between an electronic module and a sensor having a first branch, including a light source LED and a first switch, and a second branch including a second switch, supplied by a supply line, the module measuring modulations of the intensity of the current of the line. When the light source is turned on or in the process of turning on/turning off, the sensor: causes a modulation of the intensity of the current in the LED between a high state and a low state, causes a modulation of the intensity of the current in the second branch so that the intensity of the current is always in a so-called higher state, and in case of detection, dispatches to the electronic module a modulation of the intensity of current in the second branch, when the intensity of current in the LED is in the low state.</p> |
