Unlock instant, AI-driven research and patent intelligence for your innovation.

Pressure sensing system and seat cushion having the pressure sensing system

A technology of sensing system and seat cushion, applied in the fields of occupant-related weight group, pressure sensing system and seat cushion, which can solve the problems of low sensing resolution and the like

Active Publication Date: 2020-03-06
MAGNA SEATING
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As such, some sensing systems used on vehicle seats only provide data from a limited number of points on the seat, and thus have low sensing resolution, which can lead to ineffective measurements of the weight of the vehicle occupant

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pressure sensing system and seat cushion having the pressure sensing system
  • Pressure sensing system and seat cushion having the pressure sensing system
  • Pressure sensing system and seat cushion having the pressure sensing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] figure 1 Seat 10 is shown. Seat 10 may be a front or rear seat of an automobile or other motor vehicle. The seat 10 includes a seat cushion 20 and a seat back 30 . The seat cushion 20 may include a foam pad, such as a thermally conductive foam pad. A part of the foam pad may be filled with a conductive substance, such as an electrically conductive substance or a thermally conductive substance. Examples of such foam pads are disclosed in Provisional Application Nos. 62 / 269,526, 62 / 331,518 and 62 / 475,956. The contents of these provisional applications are incorporated herein by reference.

[0040] In some examples, the seat cushion 20 may contain a dielectric constant sensor and a conductive foam pad for sensing the weight of an occupant of the seat 10 and the occupant's weight distribution on the seat cushion 20 . The sensed weight can be used to classify the occupant according to Federal Motor Vehicle Safety Standard 208 (FMVSS 208), which regulates crash protectio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A pressure sensing system (24), seat cushion (20) incorporating the pressure sensing system, and method of sensing a weight group associated with an occupant of an automotive seat are described. The pressure sensing system includes a layer of an electrically conductive foam (28) and a flexible printed circuit (26) that includes a flexible substrate (26a) and N horizontal sensing wires (26b) and Mvertical sensing wires (26c) securely placed on a top surface of the flexible substrate. The horizontal sensing wires intersect with the vertical sensing wires and form N*M intersections. The layer ofan electrically conductive foam is placed on top of the N horizontal sensing wires and the M vertical sensing wires. When a pressure is applied to the layer of the electrically conductive foam, eachintersection generates in real time an electric flux density value to reflect a degree of a compression caused by the pressure to a corresponding point of the electrically conductive foam.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 529,517, filed July 7, 2017, entitled Seat with Permittivity Sensor and Conductive Foam Pad, the contents of which are incorporated herein by reference. technical field [0003] The present application relates generally to pressure sensing, and more particularly to a pressure sensing system, a seat cushion including the pressure sensing system, and a method of sensing a weight group associated with an occupant of a vehicle seat. Background technique [0004] Occupants of vehicle seats are classified according to Federal Motor Vehicle Safety Standard 208 (FMVSS 208). Sensing technology is often used to determine the occupant's weight for classification. Airbag deployment is activated or inhibited based on the sensed weight of the vehicle occupant. However, the sensed weight may not be reliable. The sensed occupant weight may change when th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B60N2/00B60R21/015B29C44/12B29C44/58B60N2/70G01L1/14
CPCB29K2995/0005B29L2031/3425B29C33/123B29K2075/00B29C44/1266B29C44/583B60N2/7017B29K2667/003B29K2679/08B60R21/01532G01L1/205B60N2/0025B60N2/0026B60N2/0033B60N2230/10B60N2210/40B60N2210/12B29C45/14065B29C45/26B29C2045/14147B29K2105/04B29L2031/3005B29L2031/771B60R21/01B60R22/48B60R2022/4808H05K1/0296H05K1/032H05K1/0393H05K2201/10151
Inventor 布鲁诺·卡拉罗埃里克·科兹洛夫斯基勒内·肖万丹尼尔·C·怀亚特
Owner MAGNA SEATING