Method for detecting a user's portable equipment in a predetermined area inside or outside a vehicle by microwave, and related detection device and user equipment

摘要

The present invention detects the user's portable equipment (SD) in a predetermined area (ZD1, ZD2, ZD3) inside or outside the vehicle V by microwave using the detection device 10 installed in the vehicle V. For the purpose of the method, the BLE type high-frequency communication includes two modes of a first mode called signaling and a second mode called communication, and the present invention proposes that the first mode includes the following steps: do: Positioning the portable equipment at a predetermined fixed distance from the detection device, Transmitting a signal (≪ADV_IND≫, ≪SCAN_REQUEST≫) by a detection device at a predetermined transmission power P in the channel CH ₃₇ , When the detection device receives the response signal (≪SCAN_RESPONSE≫, ≪SCAN_REQUEST≫) from the portable device, it repeats the transmission of the signal with the same transmission power in the other two channels (CH ₃₈ , CH ₃₉ ), otherwise the reduced transmission power Repeating the transmission of the signal in the channel (CH ₃₇ ), When the detection device no longer receives a response signal, the transmit power (P) is compared with a predetermined threshold transmit power (P _T ) and transmitted by the detection device during the second mode to detect the portable equipment in a predetermined area. Applying a correction (Δ) to the transmission power (Pe) of the signal.