Speed alarm system

• US 8,618,923 B2
• Filed: 04/03/2009
• Issued: 12/31/2013
• Est. Priority Date: 06/02/2008
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Nakamura, Kazumasa
• Primary Examiner(s): HUNNINGS, TRAVIS R
• Application Number:
  US12/995,633
• Publication Number:
  US 20110090076A1
• Time in Patent Office: 1,733 Days
• Field of Search: 340/441, 340/466, 340/438, 340/439
• US Class Current: 340/441
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G01C 21/3697 Output of additional, non-guidance related information, e.g. low fuel level G01C21/3679 takes precedence
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/096791 where the origin of the information is another vehicle

Abstract

A speed alarm system includes: a vehicle position detecting unit that detects a position of a vehicle; a map data storage unit that stores map data including information on a type of a road and a speed limit of the road; an entrance determining unit that determines whether the vehicle enters a different type of road from the type of the road; an integrated travel distance detecting unit that detects an integrated travel distance on a road which the vehicle has entered and a speed detecting unit that detects a speed of the vehicle on the road which the vehicle has entered, when the entrance determining unit determines that the vehicle enters the different type of road from the type of the road before the vehicle enters; and a notification unit that gives at least an auditory or visual alarm to an occupant of the vehicle when the integrated travel distance is equal to or less than a predetermined distance and the speed of the vehicle is higher than the speed limit.

Claims

1. A speed alarm system comprising:

a vehicle position detecting unit that detects a position of a vehicle;

a map data storage unit that stores a map data including information on a type of a road and a speed limit of the road;

an entrance determining unit that determines whether the vehicle enters a different type of road from the type of the road;

an integrated travel distance detecting unit that detects an integrated travel distance on a road which the vehicle has entered and a speed detecting unit that detects a speed of the vehicle on the road which the vehicle has entered, when the entrance determining unit determines that the vehicle has entered the different type of road from the type of the road the vehicle entered from; and

a notification unit that gives at least an auditory or visual alarm to an occupant of the vehicle when the integrated travel distance is equal to or less than a predetermined distance and the speed of the vehicle is higher than the speed limit.

2. The speed alarm system according to claim 1,

wherein the predetermined distance varies depending on the type of the road which the vehicle has entered.

3. The speed alarm system according to claim 1,

wherein the entrance determining unit determines whether the vehicle enters a general road with a relatively low speed limit from an expressway with a relatively high speed limit.

4. The speed alarm system according to claim 1,

wherein the entrance determining unit determines whether the vehicle enters a minor street with a relatively low speed limit from a main road with a relatively high speed limit.

5. The speed alarm system according to claim 1, wherein when the integrated travel distance is more than the predetermined distance and the speed of the vehicle is higher than the speed limit, the notification unit does not output a speed warning to the occupant of the vehicle.

6. The speed alarm system according to claim 1, wherein the speed detecting unit determines whether the speed of the vehicle is equal to or more than the speed limit by a predetermined speed;

and

the notification unit gives the auditory or visual alarm to the occupant of the vehicle when the integrated travel distance is equal to or less than the predetermined distance and the speed of the vehicle is higher than the speed limit by the predetermined speed.

7. The speed alarm system according to claim 2, wherein the predetermined distance is reduced when the speed limit on the type of road is relatively low.

8. The speed alarm system according to claim 2, wherein the predetermined distance is increased when the speed limit on the type of road is relatively high.