Described are an on board unit (OBU) and a method to control an OBU within a communication zone of a road side unit (RSU), said OBU can be set into an active mode and a sleep mode. Said OBU is set into sleep mode upon receiving a release command from said RSU, and the OBU electronics are shut down so no or a minimum of power is consumed, and is set into active mode when entering said communication zone. A communication unit of said OBU is thereby powered such that the OBU can communicate with said RSU. Said OBU can be set into a tracking mode by said RSU, whereby in said tracking mode at least said communication unit is shut down and a timer is activated in said OBU, such that said OBU can restart said communication unit within a specified time limit from when it is shut down.
On board unit with power management
2018-07-24
Patent
Electronic Resource
English
IPC: | G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G07B Fahrkartenausgeber , TICKET-ISSUING APPARATUS / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |