SECTION OVERSPEED WARNING APPARATUS AND SYSTEM

• US 20090157249A1
• Filed: 05/15/2008
• Published: 06/18/2009
• Est. Priority Date: 12/12/2007
• Status: Active Grant

• Current Assignee: Carrum Technologies, LLC (Pratima Instruments, LLC)
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, Hyungjoo, Han, Taeman, Lim, Changgyu, Lim, Dongsun, Yang, Manseok, Park, Taejoon
• Granted Patent: US 8,032,273 B2
• Time in Patent Office: Days
• US Class Current: 701/29
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G01P 1/103 by comparing the value of the measured signal with one or several reference values in general G01R17/00
• CPC Class Codes: G08G 1/052 with provision for determining speed or overspeed speed measuring in general G01P
• CPC Class Codes: G08G 1/20 Monitoring the location of vehicles belonging to a group, e.g. fleet of vehicles, countable or determined number of vehicles

Abstract

In a section overspeed regulating method of determining whether a vehicle overspeeds on the basis of whether an average speed of the vehicle in a regulation section exceeds a speed limit, the section overspeed warning apparatus and system determine whether the current speed of the vehicle traveling on a regulation section exceeds the speed limit, and warn a driver. Whether the speed of the vehicle traveling on the regulation section exceeds the speed limit of the section is determined depending on a travel distance from a starting position of the regulation section to a current position of the vehicle, a travel time taken for the vehicle to travel by the travel distance, and a remaining distance from the current position of the vehicle to an end position of the regulation section. If it is determined that the current position of the vehicle will exceed the speed limit of the section, overspeed warning messages are output in the form of text, voice, or warning sound. Further, the section overspeed warning apparatus and system recommend the maximum speed, which allows the vehicle not to violate the speed limit of the section at the current position, to a driver as a recommended speed.

Claims

1. A section overspeed warning apparatus that warns a driver of vehicle overspeed in an overspeed regulation section having a regulation start position and a regulation end position, the section overspeed warning apparatus comprising:

a distance detecting unit that detects a travel distance from the regulation start position to a current position of a vehicle and a remaining distance from the current position of the vehicle to the regulation end position;

a time detecting unit that detects a travel time taken for the vehicle to travel from the regulation start position to the current position of the vehicle;

a speed detecting unit that detects current speed of the vehicle;

a speed determining unit for determining whether the current speed of the vehicle will exceed a speed limit of the overspeed regulation section, by using the detected travel distance, remaining distance, and travel time; and

an overspeed information output unit that outputs an overspeed warning message when it is determined that the current speed of the vehicle will exceed the speed limit.

2. The section overspeed warning apparatus according to claim 1,

wherein the speed determining unit may determine whether the current speed of the vehicle will exceed the speed limit under the assumption that the vehicle travels to the regulation end position constantly at the current speed.

3. The section overspeed warning apparatus according to claim 1,

wherein when the following expression is satisfied, the speed determining unit determines that the current speed of the vehicle will exceed the speed limit.

V1≧

(S2×

V)÷

(S1+S2−

T1×

V) (where, T1≦

(S1+S2)÷

V)

(where V1;

current vehicle speed, S1;

travel distance, S2;

remaining distance, T1;

travel time, and V;

speed limit).

4. The section overspeed warning apparatus according to claim 3,

wherein the overspeed information output unit informs a driver of the vehicle of a result, which is obtained by calculating a right term of the expression, as a recommended speed.

5. The section overspeed warning apparatus according to claim 4,

wherein the overspeed information output unit outputs information messages including the recommended speed by using a display screen.

6. The section overspeed warning apparatus according to claim 4,

wherein the overspeed information output unit outputs information messages including the recommended speed by using voice.

7. The section overspeed warning apparatus according to claim 1,

wherein information about the regulation start position, the regulation end position, and the current position of the vehicle is supplied from a navigation device including a GPS receiver.

8. The section overspeed warning apparatus according to claim 7,

wherein the speed detecting unit detects the current speed of the vehicle from information about the vehicle speed, which is supplied from the navigation device.

9. The section overspeed warning apparatus according to claim 1,

wherein the overspeed information output unit informs the driver of a fact that it is determined that the current speed of the vehicle will exceed the speed limit, by using warning sound.

10. A section overspeed warning system that warns a driver of vehicle overspeed in an overspeed regulation section having a regulation start position and a regulation end position, the section overspeed warning system comprising:

a navigation device that supplies information about the regulation start position, the regulation end position, and a current position of a vehicle; and

a section overspeed warning apparatus for detecting whether the current speed of the vehicle will exceed a speed limit of the overspeed regulation section by using the information supplied from the navigation device, and informing the driver of the detection result,

wherein the section overspeed warning apparatus includes;

an information detecting unit that detects a travel distance from the regulation start position to the current position of the vehicle, a remaining distance from the current position of the vehicle to the regulation end position, and a travel time taken for the vehicle to travel from the regulation start position to the current position of the vehicle;

a speed determining unit that determines whether the current speed of the vehicle will exceed the speed limit, by using the detected travel distance, remaining distance, and travel time; and

an overspeed information output unit that outputs an overspeed warning message when it is determined that the current speed of the vehicle will exceed the speed limit.

11. The section overspeed warning system according to claim 10,

wherein when the following expression is satisfied, the speed determining unit determines that the current speed of the vehicle will exceed the speed limit.

V1≧

(S2×

V)÷

(S1+S2−

T1×

V)(where, T1≦

(S1+S2)÷

V)

V1;

current vehicle speed, S1;

travel distance, S2;

remaining distance, T1;

travel time, and V;

speed limit.

12. The section overspeed warning system according to claim 11,

wherein the overspeed information output unit outputs a result, which is obtained by calculating a right term of the expression, on a display screen as a recommended speed.

13. The section overspeed warning system according to claim 12,

wherein the overspeed information output unit outputs information messages including the recommended speed.

14. The section overspeed warning system according to claim 10,

wherein the navigation device supplies information about the current speed of the vehicle to the section overspeed warning apparatus.