# US 10,955,385 B2 · Sound measurement system for a motor vehicle

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- Number: US 10,955,385 B2
- Document ID: US10955385B2
- Status: Granted
- Kind: B2
- Application number: 16/497,208
- Filed: 2018-03-22
- Published: 2020-01-16
- Granted: 2021-03-23
- Earliest claimed: 2017-03-24
- Assignees: Compagnie Generale Des Etablissements Michelin
- Applicants: Compagnie Generale Des Etablissements Michelin
- Inventors: Jean-Louis Linda; Thierry Auguet; Sylvain Grandjean
- Web page: https://patentgrep.com/patent/US10955385B2

## CPC

- G01N 29/223: {Supports, positioning or alignment in fixed situation (mounting transducers per se G10K11/004)}
- B60R 11/0247: {for microphones or earphones}
- B60T 8/1725: {Using tyre sensors, e.g. Sidewall Torsion sensors [SWT] (for tyre pressure and temperature detection B60C23/00)}
- B60W 40/06: Road conditions
- G01N 29/14: using acoustic emission techniques {(echo of particles G01N29/046; measuring mechanical vibrations or acoustic waves in solids in general G01H1/00)}
- G01N 29/221: {Arrangements for directing or focusing the acoustical waves (electronic orientation or focusing G01N29/262; sound directing or focusing G10K11/26; mechanical steering of sound transducers or their beams G10K11/35)}
- G10K 11/004: {Mounting transducers, e.g. provided with mechanical moving or orienting device (mountings specially adapted to a particular sound-producing device, see the preceding groups G10K1/00 - G10K9/00, e.g. G10K1/26, G10K1/28, G10K9/22; arrangements of sonic watch equipment on submarines B63G8/39; buoys B63B22/00)}
- B60T 2210/10: Detection or estimation of road conditions
- B60T 2210/13: Aquaplaning, hydroplaning
- G01N 2291/2692: Tyres
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR

## Abstract

A sound measurement system intended to be installed on a motor vehicle, the system comprising: a microphone, an element for supporting the microphone, mechanical means for protecting the microphone against various projections (water, dust, etc.) from the environment of the vehicle, and mechanical means for protecting the microphone from airborne noise originating from the routing of the sound wave between the source and the measurement (cavity noise) and from the environment of the measuring system (turbulence around the measuring device), the various mechanical protection means being separate or combined. A motor vehicle may be provided with such a system.

## Claims

### Claim 1

A sound measurement system intended to be installed on a motor vehicle, the system comprising:
a microphone;
an element for supporting the microphone;
mechanical means for protecting the microphone against projections from an environment of the vehicle and for protecting the microphone from airborne noise originating from routing of a sound wave between a source and the measurement system and from the environment of the measurement system; and
means for fixing the sound measurement system to a metal seam of a chassis of the motor vehicle comprising at least one fixing element comprising at least one metal claw,
wherein the mechanical means comprise a protective cover comprising a deflector with two vanes at its ends installed between the microphone and the noise source and columns parallel to the microphone installed on respective opposite sides thereof, and
wherein the sound measurement system further comprises mechanical means for protecting the microphone against noise transmitted by conduction in a solid and originating from the motor vehicle, from an accessory of the motor vehicle, from a component of the sound measurement system, or from a combination of these, said mechanical means comprising a dampening base, wherein a stiffness of a central part of the dampening base is different from a stiffness of a fixing attachment at an end of the dampening base.

### Claim 2 (depends on 1)

The sound measurement system according to claim 1, wherein the element for supporting the microphone comprises a polygonal seat circumscribed by a cone.

### Claim 3 (depends on 1)

The sound measurement system according to claim 1, wherein the mechanical means comprise lateral lugs installed on the element.

### Claim 4 (depends on 1)

A motor vehicle comprising a sound measurement system according to claim 1 installed on a metal seam of the chassis of the motor vehicle in a vicinity of a front wheel of the motor vehicle.

### Claim 5 (depends on 1)

A motor vehicle comprising a sound measurement system according to claim 1 installed on a metal seam of the chassis of the motor vehicle in a vicinity of a rear wheel of the motor vehicle.

### Claim 6 (depends on 1)

A motor vehicle comprising at least two sound measurement systems according to claim 1.