Haptic seating system

• US 8,141,947 B2
• Filed: 07/12/2007
• Issued: 03/27/2012
• Est. Priority Date: 07/12/2007
• Status: Expired due to Fees

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Nathan, John F., Mujumdar, Arti Rohit, Karumathil, Santosh, Singh, Sandhya, Kennedy, Karl R.
• Primary Examiner(s): Trammell, James
• Assistant Examiner(s): Shafi, Muhammad
• Application Number:
  US11/776,908
• Publication Number:
  US 20090015045A1
• Time in Patent Office: 1,720 Days
• Field of Search: 340/407.1, 297/217.3
• US Class Current: 297/217.3
• CPC Class Codes: B60N 2/976 massaging systems

Abstract

A haptic seating system for use in imparting a haptic sensation to a seat. The seating system being suitable for use in a vehicle or other environment having multiple network nodes with capabilities sufficient to issue instructions suitable to instructing a haptic element used to impart the haptic sensation. The system may include the network nodes issuing the instructions through signals carried over the network.

Claims

1. A haptic seating system for use in a vehicle having a passenger seat and a number of vehicle systems configured to control vehicle operations wherein the vehicle systems transmit signals over a vehicle network in order to coordinate vehicle operations, the system comprising:

a first haptic element positioned within a first position of the seat and a second haptic element positioned within a second position of the seat, the first haptic element including a first decoder and a first motor and the second haptic element including a second decoder and a second motor, wherein the first decoder is configured to decode signals carried over the vehicle network for use in controlling haptic sensations imparted by the first motor and the second decoder is configured to decode signals carried over the vehicle network for use in controlling haptic sensations imparted by the second motor, wherein the first decoder is dedicated to the first motor and the second decoder is dedicated to the second motor such that the first decoder is unable to decode signals for use in controlling the second motor and the second decoder is unable to decode signals for use in controlling the first motor;

wherein the first decoder is assigned a unique first network address and the second decoder is assigned a unique second network addresses, thereby requiring signals carried over the vehicle network for use in controlling haptic sensations to specify the network address of the first and second decoders corresponding with the first and second motors desired to impart the haptic sensation;

wherein the vehicle network is configured such that signals carried over the vehicle network to control the imparted haptic sensations are commonly received by each of the first and second decoders; and

wherein the first decoder is configured to only impart haptic sensations for the signals specifying the first network address and the second decoder is configured to only impart haptic sensations for the signals specifying the second network address, thereby eliminating a need for a central control module to receive communications and decide whether the first and second haptic element is to impart the haptic sensations specified therein.

2. The system of claim 1 further comprising at least one additional haptic element positioned within the seat and connected to the network, each haptic element being separately controlled according to signals carried over the network.

3. The system of claim 2 wherein at least one haptic element is located on one side of the seat and another haptic element is located on another side of the seat, wherein the vehicle systems are configured control the haptic elements on both sides of the seats to impart the haptic sensation with the same intensity, wherein the vehicle systems are configured to provide directionality to the haptic sensation by turning off the haptic elements on one side of the seat so that only the haptic elements on the other side of the seat impart the haptic sensation.

4. The system of claim 3 wherein only the highest priority vehicle system transmits signals over the network to control the haptic element.

5. The system of claim 2 wherein the haptic elements are connected to the vehicle network with independent network connections included as part of the corresponding first and second decoder, wherein the vehicle network is a Controller Area Network (CAN) and each of the independent network connections include a high CAN line and a low CAN line configured to connect the corresponding first and second decoder to the vehicle network.

6. The system of claim 1 wherein the haptic element is controlled according to a highest priority vehicle system if multiple vehicle systems simultaneously attempt to control the motor.

7. The system of claim 1 wherein the haptic element is unable to distinguish a highest priority vehicle system if multiple vehicle system simultaneously attempt to control the haptic element such that the vehicle systems execute a dispute resolution process to determine the highest priority vehicle system.

8. The system of claim 1 wherein each vehicle system issues customized signals for controlling the haptic element so that each vehicle system can control the haptic element differently.

9. The system of claim 1 wherein the motor is eccentrically weighted to generate vibrations used to impart the haptic sensation.

10. The system of claim 1 wherein each of the vehicle systems are required to independently specify an intensity and a frequency at which a motor included within the haptic element is to rotate in order to control the haptic sensation imparted by the haptic element.

11. The system of claim 1 wherein each decoder is able to detect for corruption of signals intended to control the haptic sensations and to prevent imparting of the haptic sensations in the event signals are corrupt, the signals being determined to be corrupt in the event the signals result in imparting haptic sensations that cause an unnecessary alert.

12. The system of claim 1 wherein the dispute resolution process requires each vehicle system attempting to control the haptic element to transmit a corresponding request over the vehicle network to be received by the other vehicle systems and to monitor the vehicle network for requests from higher priority vehicle systems, wherein each lower priority vehicle system ceases signaling intended to control the haptic element in the event a request from a higher priority vehicle system is detected and each lower priority vehicle system is prevented from issuing requests while a higher priority vehicle system is controlling the haptic element.

13. The system of claim 1 wherein the first decoder is configured to route signals to no more than the first motor and the second decoder is configured to route signals to no more than the second motor.