MOTOR VEHICLE SIGNALLING SYSTEM INCORPORATING A HAPTIC ACCELERATOR PEDAL

• US 20070085667A1
• Filed: 10/17/2006
• Published: 04/19/2007
• Est. Priority Date: 10/19/2005
• Status: Active Grant

• Current Assignee: C.R.F. Societa Consortile Per Azioni
• Original Assignee: C.R.F. Societa Consortile Per Azioni
• Inventors: Cicilloni, Renzo, Turco, Patrizio, Gallione, Alessandro
• Granted Patent: US 7,570,156 B2
• Time in Patent Office: Days
• US Class Current: 340/435
• CPC Class Codes: B60K 2360/179 Distances to obstacles or vehicles
• CPC Class Codes: B60K 2370/158 Haptic output
• CPC Class Codes: B60K 2370/179 Distances to obstacles or vehicles
• CPC Class Codes: B60K 26/021 with means for providing feel, e.g. by changing pedal force characteristics
• CPC Class Codes: B60K 31/18 including a device to audibly, visibly, or otherwise signal the existence of unusual or unintended speed to the driver of the vehicle devices primarily intended for indicating speed to other traffic B60Q1/54
• CPC Class Codes: B60K 35/25 using haptic output
• CPC Class Codes: B60K 35/28 characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver

Abstract

The system comprises: a signalling device able to provide the driver with a sensorial alarm signal indicating a danger situation; detectors able to provide signals and/or data representing the situation outside the motor vehicle and/or the travel conditions of the vehicle itself; and electronic processing and control devices designed to analyse the signals and/or data provided by the detectors and determine the occurrence of predetermined operating situations, such as the presence of any obstacles along the travel path of the motor vehicle, and generate, under predetermined conditions and in accordance with a predefined procedure, warning signals and/or data which can be used for activating the signalling device. The signalling device comprises an electrically operated actuator associated with the accelerator pedal of the motor vehicle and able, when activated, to apply to said pedal a stress with predefined characteristics, which is perceivable by the driver'"'"'s foot.

Claims

1. An alarm system for a motor vehicle provided with an accelerator pedal;

the system comprising;

signalling means able to provide the driver with a sensorial alarm signal indicating a danger situation;

detector means able to provide signals and/or data representing the situation outside the motor vehicle and/or the travel conditions of the vehicle itself; and

electronic processing and control means designed to analyse the signals and/or data provided by the detector means and determine the occurrence of predetermined operating situations, such as the presence of any obstacles along the travel path of the motor vehicle, and generate, under predetermined conditions and in accordance with a predefined procedure, warning signals and/or data which can be used for activating the signalling means;

said signalling means comprising electrically operated actuators associated with the accelerator pedal of the motor vehicle and able, when activated, to apply to said pedal a stress with predefined characteristics, which is perceivable by the driver'"'"'s foot,

wherein said electronic processing and control means are designed to generate warning signals and/or data indicating a plurality of different danger levels and to operate said actuator means in a corresponding plurality of different modes, so as to apply to the accelerator pedal correspondingly different perceivable stresses,

said processing and control means being designed to drive the actuator means so as to cause the application, selectively, to the accelerator pedal of;

a continuous resistive force tending to oppose the operating force exerted by the driver;

a sequence of force pulses with a relatively low frequency and relatively high amplitude; and

a sequence of force pulses with a relatively higher frequency and relatively lower amplitude.

2. A system according to claim 1, in which the frequency and/or the amplitude of said force pulses is variable within a predetermined range.

3. A system according to claim 1, in which said actuator means comprise an electric motor which can be coupled to a rotating member displaceable from a rest or inactive position, where it does not interfere with the movement of the accelerator pedal, into a working or active position, where it is able to apply to the accelerator pedal a force tending to oppose the operating force exerted by the driver.

4. A system according to claim 3, in which angular position sensor means may be optionally associated with the accelerator pedal and the abovementioned rotating member, said sensor means being connected to said electronic processing and control means which are designed to control the movement of the abovementioned rotating member based on a predefined mathematical model representing the system comprising the accelerator pedal and the mechanical part of said actuator means.

5. A system according to claim 1, comprising sensor means able to provide signals/data indicating the speed of travel of the motor vehicle, said electronic processing and control means being designed to enable the operation of the abovementioned actuator means only when the speed of travel of the motor vehicle is greater than a predetermined value.