Wake-up system for stations associated for implementing at least a distributed function, in particular in a motor vehicle

• US 20040174909A1
• Filed: 12/29/2003
• Published: 09/09/2004
• Est. Priority Date: 07/06/2001
• Status: Active Grant

• Current Assignee: Peugeot Citroen Automobiles SA (Stellantis NV)
• Original Assignee: Peugeot Citroen Automobiles SA (Stellantis NV)
• Inventors: Hildenbrand, Yannick, Marais, Jean-Michel, Joffrain, Lionel, Henri, Nicolas
• Granted Patent: US 7,523,334 B2
• Time in Patent Office: Days
• US Class Current: 370/524
• CPC Class Codes: H04L 12/12 Arrangements for remote connection or disconnection of substations or of equipment thereof
• CPC Class Codes: H04L 12/40039 Details regarding the setting of the power status of a node according to activity on the bus
• CPC Class Codes: H04L 12/407 with decentralised control
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

The invention concerns a wake-up system of stations connected to a data transmission network (37) in particular for a motor vehicle, wherein the stations (31, 32, 33, 34, 35, 36) must shift from a standby or off state to a wake-up state to exchange data concerning the distributed function. The invention is characterized in that all the stations are connected by a single line (38) transmitting a station wake-up signal, and at least some of said stations comprise means (39) for generating a wake-up signal on said line (38) to cause the other stations to shift into their wake-up state and means (40) for transmitting data concerning the distributed function, over the data transmission network, and at least some of said stations comprise means (40) for analyzing said data over the data transmission network to determine whether they are concerned thereby and hence by the corresponding distributed function, so as to remain in wake-up state or to shift into standby or off state otherwise.

Claims

1. A system for waking up stations associated for implementing at least one distributed function and interconnected by an information transmission network (37) in particular for a motor vehicle, in which the stations (31, 32, 33, 34, 35, 36) need to pass from a standby state or an OFF state to an awake state in order to exchange information relating to the distributed function, the system being characterized in that all of the stations are connected to a single line (38) for transmitting a station wakeup signal, in that at least some of the stations include means (39) for generating a wakeup signal on said line (38) in order to cause the other stations to take up their awake state, and means (40) for sending information relating to the distributed function over the information transmission network (37), and in that at least some of the stations include means (40) for analyzing the information on the information transmission network in order to determine whether they are concerned by the information and thus by the corresponding distributed function, so as to remain in the awake state or else return to the standby state or the OFF state.

2. A system according to claim 1, characterized in that the wakeup signal is in the form of an electrical pulse of predetermined duration as needed by the stations in order to become powered and to initialize under its command.

3. A system according to claim 2, characterized in that the stations include electricity power supply means including a self-hold mechanism enabling the stations to be held in the awake state if they are concerned by the distributed function.

4. A system according to any preceding claim, characterized in that all of the stations have a line interface (39) comprising a signal input stage (41a) including an input buffer (42), and in that at least some of the stations comprise an output stage (41b) including a semiconductor switch member (45).