Method for transmitting traffic informations for a driver or a vehicle including maximum speed information

• US 6,107,940 A
• Filed: 09/14/1998
• Issued: 08/22/2000
• Est. Priority Date: 09/18/1997
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Grimm, Wolfgang
• Primary Examiner(s): Hofsass, Jeffery A.
• Assistant Examiner(s): Nguyen, Tai Tan
• Application Number:
  US09/152,963
• Time in Patent Office: 708 Days
• Field of Search: 340/905, 340/928, 340/906, 340/438, 340/439, 340/936, 340/441, 364/449, 701/213, 342/357, 180/171
• US Class Current: 340/905
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element

Abstract

For transmitting traffic informations for a driver of a vehicle a detection and recording device is provided in a vehicle, informations are requested wirelessly by the detection and recording device from transmission devices arranged in a roadway or on a roadway edge, and supplying an energy for an information transmission is supplied by the detection and recording device.

Claims

1. A method for transmitting traffic information for a driver of a vehicle, comprising the steps of providing a detection and recording device in a vehicle;

requesting wirelessly information by the detection and recording device from a transmission device arranged in a roadway or on a roadway edge, said transmission device storing information about a permissible maximum speed;

supply energy for an information transmission by the detection and recording device;

processing additional information by the detection and recording device; and

supplying the additional information from a satellite navigation system, said detection and recording device automatically requesting the information about a permissible maximum speed from said transmission device and providing an indication when the vehicle exceeds the permissible maximum speed.

2. A method as defined in claim 1;

and further comprising transmitting a request signal by the detection and recording device to the transmission device;

converting the request signal by the transmission device; and

sending back as a response signal to the detection and recording device.

3. A method as defined in claim 1;

and further comprising transmission by the transmitting device a coded response signal to the detection and recording device; and

evaluating the coded signal by the detection and recording device.

4. A method as defined in claim 1;

and further comprising using a plurality of the transmission devices for transmission of information.

5. A method as defined in claim 1;

and further comprising redundantly operating the transmission device for guaranteeing a reliability of a detection of all relevant information.

6. A method as defined in claim 4;

and further comprising forming each transmission device as a passive transducer.

7. A method as defined in claim 4;

and further comprising forming each of the transmission devices as a surface wave sensor.

8. A method as defined in claim 1, wherein said indication is selected from the group consisting of an acoustic indication and an optical indication.

9. A system for transmitting traffic information for a driver of a vehicle, comprising a transmission device arranged in a roadway or on a roadway edge, said transmission device storing information about a permissible maximum speed;

a detection and recording device located in a vehicle and formed so that ft wirelessly requests information from the transmission device, said detection and recording device being formed so that it supplies energy for an information transmission between said transmission device and said detection and recording device; and

means for supplying additional information from a satellite navigation system so that said detecting and recording device processes the additional information, said detection and recording device automatically requesting the information about a permissible maximum speed from said transmission device and providing an indication when the vehicle exceeds the permissible maximum speed.

10. A system as defined in claim 9, wherein said indication is selected from the group consisting of an acoustic indication and an optical indication.

11. A method for transmitting traffic information for a driver of a vehicle, comprising the steps of providing a detection and recording device in a vehicle, requesting wireless information related to a driving direction of the vehicle by the detection and recording device from a plurality of transmission devices arranged in a roadway or on a roadway edge in definite time intervals in a fixed sequence, which transmission devices store information about a permissible maximum speed;

supplying energy for information transmission by the detection and recording device;

automatically requesting by the detection and the recording device from the transmission devices information about the permissible maximum speed, and in the event if the vehicle exceeds the permissible maximum speed producing an indication to a driver about exceeding of the permissible maximum speed.

12. A system for transmitting traffic information for a driver of a vehicle, comprising a plurality of transmission devices arranged in a roadway or on a roadway edge , said transmission devices storing information about a permissible maximum speed;

a detection and recording device located in a vehicle and formed so that it wirelessly requests information related to a driving direction of the vehicle from the transmission devices in definite time intervals in a fixed sequence, said detection and recording device being formed so that it supplies energy for an information transmission between said transmission devices and said detection and recording device; and

means for supplying additional information so that said detecting and recording device processes the additional information, said detection and recording device automatically requesting the information about a permissible maximum speed from said transmission devices and provides an indication when the vehicle exceeds the permissible maximum speed.