VEHICLE SPEED LIMITER SYSTEM

• US 20160347312A1
• Filed: 04/04/2016
• Published: 12/01/2016
• Est. Priority Date: 05/26/2015
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: TOMATSU, Nobuyuki, INOUE, Takashi, YEE, Sokfan, TAIRA, Tetsuya, YAMASHITA, Keiji, MASUDA, Takato
• Granted Patent: US 9,855,949 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60W 2050/146 Display means
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2554/80 Spatial relation or speed relative to objects
• CPC Class Codes: B60W 2555/60 Traffic rules, e.g. speed limits or right of way
• CPC Class Codes: B60W 2720/10 Longitudinal speed
• CPC Class Codes: B60W 30/146 Speed limiting
• CPC Class Codes: B60W 50/14 Means for informing the driver, warning the driver or prompting a driver intervention

Abstract

A vehicle speed limiter system installed on a vehicle includes a detection unit to detect a speed limit value of a road while the vehicle is traveling; a setting unit to set the speed limit value; a limiter unit to limit the vehicle speed, based on the speed limit value; an obtainment unit to obtain a stepping amount on an accelerator pedal; a calculation unit to calculate a parameter depending on the stepping amount in a state where the vehicle speed is being limited by the limiter unit; and a display unit to display information based on the parameter, in a case where a speed limit value newly detected by the detection unit is greater than the speed limit value previously set by the setting unit, before the setting unit sets the speed limit value newly detected.

Claims

1. A vehicle speed limiter system, installed on a vehicle, comprising:

a detection unit configured to detect a speed limit value of a road on which the vehicle is traveling;

a setting unit configured to set the speed limit value detected by the detection unit;

a limiter unit configured to limit the vehicle speed of the vehicle, based on the speed limit value set by the setting unit;

an obtainment unit configured to obtain a stepping amount on an accelerator pedal of the vehicle;

a calculation unit configured to calculate a parameter depending on the stepping amount, by using the stepping amount obtained by the obtainment unit in a state where the vehicle speed of the vehicle is being limited by the limiter unit; and

a display unit configured to display information based on the parameter calculated by the calculation unit, in a case where a speed limit value newly detected by the detection unit is greater than the speed limit value previously set by the setting unit, before the setting unit sets the speed limit value newly detected.

2. The vehicle speed limiter system as claimed in claim 1, wherein the calculation unit calculates the vehicle speed depending on the stepping amount, as the parameter,

wherein the display unit displays the vehicle speed calculated by the calculation unit, as the information.

3. The vehicle speed limiter system as claimed in claim 1, wherein the calculation unit calculates the vehicle speed depending on the stepping amount, as the parameter,

wherein the display unit displays information representing a change of behavior of the vehicle derived from the vehicle speed depending on the stepping amount, in a case where the speed limit value newly detected is set, as the information.

4. The vehicle speed limiter system as claimed in claim 3, further comprising:

a determination unit configured to determine whether the vehicle accelerates by setting the speed limit value newly detected, based on a current vehicle speed of the vehicle, the vehicle speed depending on the stepping amount, the speed limit value previously set by the setting unit, and the speed limit value newly detected,

wherein the display unit displays the information representing the change of behavior of the vehicle derived based on a determination result by the determination unit.

5. The vehicle speed limiter system as claimed in claim 3, further comprising:

a vehicle speed calculation unit configured to calculate a current vehicle speed of a preceding vehicle ahead of the vehicle; and

a determination unit configured to determine whether there is a likelihood that the vehicle accelerates and the vehicle collides with the preceding vehicle, by setting the speed limit value newly detected, based on a current vehicle speed of the vehicle, the vehicle speed depending on the stepping amount, the speed limit value previously set by the setting unit, the speed limit value newly detected, and the current vehicle speed of the preceding vehicle,

wherein the display unit displays the information representing the change of behavior of the vehicle derived based on a determination result by the determination unit.