Sensor-equipped vehicle braking systems, devices, and methods

Patent metadata

Field	Value
Publication number	US-10495168-B2
Application number	US-201615268039-A
Country	US
Kind code	B2
Filing date	Sep 16, 2016
Priority date	Sep 17, 2015
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

Methods, devices, and systems, for analyzing and managing data generated by a sensor-equipped braking system for vehicles, comprising a support element a block of friction material, at least one sensor interposed between the block of friction material and the support element, comprising at least one central control unit capable of receiving in real time from the sensor means at least the basic data related to one or more of the pressure of the activated braking system, the temperature of the activated braking system, the braking torque, the residual braking torque when the braking system is deactivated, and the wear on the braking system during and after activation thereof. The system can also include one or more auxiliary sensors.

First claim

What is claimed is:

1. A system configured to generate data using a sensor-equipped brake unit, the system comprising:
a braking unit comprising:
a braking device comprising:
a support;
a friction material connected with the support and configured to interface with a brake disk or a brake drum; and
at least one pressure sensor positioned between the friction material and the support and configured to output first sensor data;

at least one accelerometer configured to output second sensor data effective to determine deceleration of a vehicle incorporating the braking unit;
one or more memory devices; and
a computing system comprising one or more hardware processors configured to:
receive input data comprising the first sensor data and the second sensor data;
process the input data to identify a deceleration of the vehicle indicative of a collision; and
process the input data to analyze brake system operation corresponding to a time at or around the time of the indicated collision.

2. The system of claim 1 , wherein the at least one pressure sensor comprises a piezoceramic sensor.

3. The system of claim 1 , wherein the computing system receives the input data from the one or more memory devices.

4. A vehicle comprising:
a body;
a plurality of wheels connected with the body;
a braking unit configured to brake at least one of the plurality of wheels, the braking unit comprising:
a braking device comprising:
a support;
a block of friction material connected with the support and configured to interface with a brake disk or a brake drum associated with at least one of the plurality of wheels; and
at least one sensor configured to output sensor data effective to determine one or more of: a pressure associated with the braking unit during braking, a braking torque associated with the braking unit during braking, a residual torque associated with the braking unit when the braking unit is deactivated, and a wear associated with the braking unit;

an accelerometer;
a vehicle computing system comprising one or more hardware processors configured to:
receive input data comprising the sensor data output from the at least one sensor and acceleration data output from the accelerometer effective to determine deceleration of the vehicle;
process the input data to identify a deceleration indicative of a collision; and
process the input data to analyze brake system operation corresponding to a time at or around the time of the indicated collision; and

one or more memory devices.

5. The vehicle of claim 4 , further comprising a location sensor configured to provide location data effective to determine a location of the vehicle.

6. The vehicle of claim 5 , wherein the vehicle computing system is configured to process the location data and the acceleration data to determine a location of the vehicle that is more accurate than a location that can be determined using the location data alone.

7. The vehicle of claim 6 , further comprising at least one on-board system, wherein the vehicle computing system is configured to receive and process the sensor data, the location data, the acceleration data, and data received from the at least one on-board system.

8. The vehicle of claim 4 , wherein the at least one sensor is positioned between the block of friction material and the support.

9. The vehicle of claim 4 , wherein the at least one sensor comprises a pressure sensor.

10. The vehicle of claim 4 , wherein the at least one sensor comprises at least one piezoceramic sensor comprising a protective element enclosing the at least one piezoceramic sensor.

11. The vehicle of claim 10 wherein the protective element is configured to direct a compression force at least in part onto an area of the support surrounding the at least one piezoceramic sensor.

12. The vehicle of claim 4 , wherein the braking device further comprises an electrically insulated electrical circuit integrated in the support, and wherein the at least one sensor is mounted on the electrically insulated electrical circuit.

13. The vehicle of claim 4 , wherein the electrically insulated electrical circuit is screen printed on the support.

14. The vehicle of claim 4 , further comprising a communication unit configured to wirelessly transmit data over a wide area network.

15. The vehicle of claim 14 , wherein the communication unit is configured to transmit data over a cellular network.

16. The vehicle of claim 14 , wherein the vehicle computing system is further configured to forward data regarding the indicated collision to the communication unit for wireless transmission.

17. The system of claim 16 , wherein the vehicle computing system is further configured to forward to the communication unit for wireless transmission data indicating one or more of a notification of a malfunction of the braking unit or an indication to replace, repair, or inspect the braking unit.

18. The vehicle of claim 4 , wherein the vehicle computing system receives the input data from the one or more memory devices.

19. A method of processing data generated by vehicle sensors, including sensors from at least one sensor-equipped vehicle brake pad, to learn information relating to a collision, the method comprising:
obtaining, with at least one sensor-equipped brake pad of a vehicle, first data effective to determine one or more of: a pressure associated with the brake pad during braking and a braking torque associated with the brake pad during braking;
obtaining, with an acceleration sensor supported by the vehicle, second data effective to determine deceleration of the vehicle;
receiving, with a computing system of the vehicle comprising one or more hardware processors, input data comprising the first data and the second data;
processing the input data to identify a deceleration of the vehicle indicative of a collision; and
processing the input data to analyze brake system operation corresponding to a time at or around the time of the collision.

20. The method of claim 19 , further comprising storing the first data and the second data in one or more memory devices, and wherein the receiving comprises receiving the input data from the one or more memory devices.

Assignees

• Itt Italia Srl

Inventors

• Serra Stefano
• Donzelli Daniele
• Terranova Marco
• Solari Mattia
• Martinotto Luca

Classifications

• G01L5/284

  Measuring braking-time or braking distance · CPC title

• F16D2066/006

  without direct measurement of the quantity monitored, e.g. wear or temperature calculated form force and duration of braking · CPC title

• F16D66/028

  with non-electrical sensors or signal transmission, e.g. magnetic, optical · CPC title

• G01L1/16

  using properties of piezoelectric devices · CPC title

• F16D2066/003

  Position, angle or speed · CPC title