Enhanced sound generation for quiet vehicles

Patent metadata

Field	Value
Publication number	US-2017129397-A1
Application number	US-201514933819-A
Country	US
Kind code	A1
Filing date	Nov 5, 2015
Priority date	Nov 5, 2015
Publication date	May 11, 2017
Grant date	—

Abstract

The presence of an electrically-powered quiet vehicle is accomplished by determining a state of mind or physical state of the driver, determining the presence and proximity of humans and other objects, how the vehicle is being operated and generating a noise correlative to the threat posed by the vehicle to humans and other objects.

First claim

What is claimed is:

1 . A method of announcing a presence of a vehicle operated by a driver, the method comprising:
determining a state of mind or physical state of the driver in real time; generating noise, audible to at least pedestrians that are proximate to the vehicle when it is being driven, characteristics of the generated noise being selected from a plurality of different characteristics responsive to a determined state of mind or determined physical state of the driver.

2 . The method of claim 1 , further comprising determining a state of mind or physical state of the driver, such a determining step comprising:
measuring at least one vital sign of the driver in real time; correlating the at least one vital sign with a level of driver impairment in real time; and wherein the step of generating noise comprises selecting characteristics of generated noise responsive to the driver's level of impairment.

3 . The method of claim 1 , wherein the step of determining a state of mind or physical state comprises:
substantially continuously measuring the driver's operation of the vehicle driving controls in real time.

4 . The method of claim 1 , wherein the step of determining a state of mind or physical state comprises:
determining the driver's operation of a wireless communications device.

5 . The method of claim 1 , wherein the step of determining a state of mind or physical state comprises:
determining the speed of the vehicle and separation of the vehicle from objects in front of the vehicle in real time; determining the driver's operation of a plurality of vehicle operation controls in real time.

6 . The method of claim 1 , wherein the vehicle is quiet.

7 . The method of 1 , wherein the step of generating noise comprises:
generating audible signals from an audio signal transducer.

8 . The method of claim 1 , wherein the step of generating noise comprises:
sampling ambient noise to determine audible characteristics of the ambient noise in real time; selecting an additional noise to broadcast from the audio signal transducer in real time based on at least one characteristic of the ambient noise, the at least one characteristic being selected to audibly distinguish the generated noise from ambient noise.

9 . The method of claim 5 , wherein the step of generating noise further comprises:
selecting the additional noise based on at least one of:
a characteristic of the ambient noise;
the driver's level of impairment;
the driver's operation of the vehicle;
an activity of a pedestrian, motor vehicle or other object.

10 . An apparatus for announcing a presence of a vehicle operated by a driver, the apparatus comprising:
a driver impairment determiner, configured to determine in real time at least one of: a driver's state of mind and physical state; a noise generator, configured to generate noise that is audible to at least pedestrians proximate to the vehicle when the vehicle is being driven, characteristics of the generated noise being selected by the noise generator from a plurality of different characteristics responsive to the determined state of mind or physical state of the driver.

11 . The apparatus of claim 10 , wherein the driver impairment determiner comprises:
a computer; a first plurality of sensors coupled to the computer, each sensor of the first plurality of sensors being configured to measuring at least one vital sign of the driver; a second plurality of sensors coupled to the vehicle and to the computer, each sensor of the second plurality of sensors being configured to measuring the driver's operation of a vehicle operating control; a third plurality of sensors, coupled to the vehicle and to the computer, each sensor of the third plurality of sensors being configured to detect a pedestrian, cyclist, vehicle or other object near the vehicle; a non-transitory memory device operatively coupled to the computer, the memory device storing executable program instructions, which when executed cause the computer to:
read signals from the first plurality of sensors;
read signals from the second plurality of sensors; and
determine at least one of: a driver's state of mind and physical state by correlating signals that are read from the first plurality of sensors to signals that are read from the second plurality of sensors.

12 . The apparatus of claim 11 , wherein the noise generator comprises an audio noise signal generator coupled to the computer and a loudspeaker coupled to the audio noise signal generator.

13 . The apparatus of claim 12 , further comprising a microphone, operatively coupled to the computer, the non-transitory memory device storing additional program instructions, which when executed by the computer they cause the computer to:
sample ambient noise from electrical signals received by the computer from the microphone; determine a frequency spectrum of ambient noise signals; identify at least one portion of the ambient noise frequency spectrum, where the ambient noise is lowest relative to amplitudes of other component frequency signals; generate at least one audio frequency signal component, which is in the at least one portion of the ambient noise frequency spectrum where the ambient noise is lowest relative to amplitudes of other component frequency signals; and output the at least one audio frequency signal component that is in the at least one portion of the ambient noise frequency spectrum where the ambient noise is lowest relative to amplitudes of other component frequency signals.

14 . The apparatus of claim 11 , wherein the second plurality of sensors comprises:
a wireless communications device operation detector, configured to detect operation of a wireless communications device inside the vehicle.

15 . The apparatus of claim 11 , wherein the second plurality of sensors comprise at least one of:
a steering wheel operation sensor; a brake pedal operation sensor; an accelerator pedal operation sensor; and an entertainment system audible volume setting sensor.

16 . The apparatus of claim 11 , wherein the first plurality of sensors comprise at least one of:
a pedestrian sensor; a driver pulse sensor; a driver's body temperature sensor; a driver's eye movement sensor; and a driver's lane change detector.

Assignees

• Continental automotive systems inc

Inventors

• Gee Robert Allen
• Seymour Shafer Burch

Classifications

• A61B5/021

  Measuring pressure in heart or blood vessels · CPC title

• A61B5/168

  Evaluating attention deficit, hyperactivity · CPC title

• A61B5/01

  Measuring temperature of body parts {; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue} (clinical contact thermometers G01K13/20) · CPC title

• A61B5/0816

  Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R23/00) · CPC title

• B60Q5/008 Primary

  for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching · CPC title