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Proximity sensor assembly and method of detecting failure thereof

A proximity sensor, sensor technology, applied in the field of proximity sensors, can solve problems such as signal changes

Pending Publication Date: 2019-02-26
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a tiny crack in a conductive circuit can cause a significant change in the signal, leading to failure

Method used

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  • Proximity sensor assembly and method of detecting failure thereof
  • Proximity sensor assembly and method of detecting failure thereof
  • Proximity sensor assembly and method of detecting failure thereof

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Embodiment Construction

[0098] As specified, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various and alternative forms. The drawings are not necessarily of a specific design; some schematics may be exaggerated or minimized to show functional overviews. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

[0099] refer to figure 1 and 2 , according to one embodiment, the interior of a motor vehicle 10 is generally shown having a passenger compartment and a switch assembly 20 employing a plurality of proximity switches 22 with switch activation monitoring and determination. The vehicle 10 generally includes an overhead console 12 mounted on a roof or ceiling on the underside of the...

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Abstract

A proximity sensor assembly is provided, which includes a proximity sensor comprising conductive circuitry and generating a signal based on a sense activation field. The proximity sensor assembly alsoincludes control circuitry for processing the signal to sense activation of the sensor, the control circuitry further monitoring the signal and comparing the signal to one or more parameters of a prior captured signal stored in memory and determining a fault condition based on a change between the current signal and the one or more parameters of the prior signal, wherein the control circuitry generates a baseline value of the prior signal and adjusts the baseline value to an adjusted baseline value when a fault condition is detected in an attempt to correct the fault condition.

Description

technical field [0001] The present invention relates generally to proximity sensors, and more particularly to a sensor assembly and method for detecting failure of a proximity sensor. Background technique [0002] Motor vehicles are often equipped with a variety of user-actuatable switches, such as those used to operate devices including power windows, headlights, windshield wipers, sunroof, interior lights, radio and infotainment devices, and various other devices switch of such a device. Typically, these types of switches need to be actuated by a user in order to activate or deactivate the device or to perform certain types of control functions. Proximity switches (e.g., capacitive switches) employ one or more proximity sensors (e.g., capacitive sensors) to generate a sense activation field and sense user actuation of the switch, typically caused by the user's finger being in close proximity or touching the sensor. Changes in the activation field. Capacitive switches ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G01D18/00G01R31/00
CPCG01D18/00G01R31/00G05B19/0423G05B2219/25257H03K2217/94026H03K2217/960705B60Q3/82H03K17/955H03K2217/960745B60Q9/00H03K3/02H03K2017/9455
Inventor 彼得罗·布托洛斯图尔特·C·萨尔特詹姆斯·斯图尔特·兰金保罗·肯尼思·德洛克
Owner FORD GLOBAL TECH LLC