Device for warning the driver of a motor vehicle of dangers by radio

• US 20030090392A1
• Filed: 11/18/2002
• Published: 05/15/2003
• Est. Priority Date: 02/18/2000
• Status: Active Grant

• Current Assignee: Daimler AG (Mercedes-Benz Group AG), Mitsui Chemicals Incorporated (Mitsui Chemicals)
• Original Assignee: Daimler Chrysler Company LLC (Stellantis NV)
• Inventors: Schuessler, Robert
• Granted Patent: US 6,798,354 B2
• Time in Patent Office: Days
• US Class Current: 340/988
• CPC Class Codes: G08G 1/0965 responding to signals from another vehicle, e.g. emergency vehicle
• CPC Class Codes: G08G 1/162 event-triggered

Abstract

The invention relates to a device for the radio-based issuing of a hazard warning to the driver of a motor vehicle with a data transmission device for transmitting and receiving data, the data transmission device exchanging data with data transmission devices of other motor vehicles and, by activating the data transmission device, emitting data to warn other motor vehicles of the hazard, and evaluating the received data and outputting warning signals to the driver when a hazard is detected, and the emitted data comprising information on the position, the speed and the direction of travel of the transmitting motor vehicle and the type of road on which the transmitting motor vehicle is moving. According to the invention, the information on the positions the type of road and the direction of travel is generated by a navigation system and in addition a warning zone around the current position of the transmitting vehicle is calculated by a computer unit and emitted by means of the data transmission device.

Claims

1. Device for the radio-based issuing of a warning to the driver of a motor vehicle with a data transmission device (1) for transmitting and receiving data, the data transmission device (1) exchanging data with data transmission devices of other motor vehicles and, by activating the data transmission device (1), emitting data to warn other motor vehicles of the hazard, and evaluating the received data and outputting warning signals to the driver when a hazard is detected, and the emitted data comprising information on the position, the speed and the direction of travel of the transmitting motor vehicle and the type of road on which the transmitting motor vehicle is moving,

characterized in that the information on the position, the type of road and the direction of travel is generated by a navigation system (3) and in addition a warning zone around the current position of the transmitting vehicle is calculated by a computer unit (2) and emitted by means of the data transmission device (1), the warning zone being calculated from a minimum pre-warning time, a system-dependent delay, a current speed of the transmitting motor vehicle, an approaching speed and a system-dependent position error in the form of a radius around the position of the transmitting vehicle.

2. Device for the radio-based issuing of a hazard warning to the driver of a motor vehicle according to claim 1, characterized in that the computer unit (2) of the receiving motor vehicle checks the relevance of the received hazard warning using digital maps of the navigation system (3).

3. Device for the radio-based issuing of a hazard warning to the driver of a motor vehicle according to claim 1, characterized in that the activation of the data transmission device (1) is carried out by the driver by means of a manual switch or automatically by means of a computer unit (1) as a function of the evaluation of internal sensor data.

4. Device for the radio-based issuing of a hazard warning to the driver of a motor vehicle according to one of claims 1 to 3, characterized in that the emitted data contains information on whether the transmitting vehicle itself constitutes the source of the hazard or whether the transmitting vehicle is emitting the hazard warning on behalf of another road user.

5. Device for the radio-based issuing of a hazard warning to the driver of a motor vehicle according to one of the preceding claims, characterized in that the position of the source of the hazard is represented on an output unit (4) of the navigation system.