Detecting activation of an operator control element in a motor vehicle

A technology for operating components and motor vehicles, applied in vehicle components, electrical components, error detection/correction, etc., can solve problems such as increased response time, and achieve the effect of overcoming signal instability

Active Publication Date: 2018-01-16
AUDI AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, although the system is protected against such voltage fluctuations, the reaction time is thus increased

Method used

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  • Detecting activation of an operator control element in a motor vehicle
  • Detecting activation of an operator control element in a motor vehicle

Examples

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Embodiment Construction

[0028] The examples set forth below are preferred implementations of the invention. In this exemplary embodiment, the described components of the embodiment represent individual features of the invention which can be considered independently of each other, which also improve the invention independently of each other and can therefore also be considered individually or in a different combination than the one shown. part of the present invention. Furthermore, the described embodiments can also be supplemented by further features of the invention that have already been described.

[0029] In the figures, functionally identical elements are each provided with the same reference signs.

[0030] figure 1A motor vehicle 1 is shown, which can be, for example, a motor vehicle, in particular a sedan. Shown are an operating element 2 , a controller 3 , a voltage source 4 , a vehicle electrical network line 5 , an electrical load 6 and a ground potential 7 . The operating element 2 ca...

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Abstract

The invention relates to a method for detecting activation (12) of an operator control element (2) in a motor vehicle (1), wherein the operator control element (2) generates an activation signal (S) as a function of the activation (12), and a control unit (3) receives the activation signal (S), (S2), and measures a signal length (TS) of the activation signal (S), (S3), and signals the activation (12), (S4), if the signal length (TS) becomes greater than a predetermined debounce time (TSO). Despite possible incorrect triggering of the activation signal (S) owing to voltage fluctuations, the debounce time (TSO) is to be short. The control unit (3) determines for this purpose an operating parameter (19), and on the basis of the operating parameter (19) it is detected (S1) that a supply voltage (U), made available at the control unit (3), of the motor vehicle (1) satisfies a predetermined instability criterion, and when the instability criterion is satisfied said control unit (3) delays the measurement (S2) of the signal length (TS) for a predetermined blocking time (T).

Description

technical field [0001] The invention relates to a method for detecting the actuation of an operating element in a motor vehicle. Also belonging to the invention is a control unit and a motor vehicle having a control unit according to the invention. Background technique [0002] The operating element can be a button, for example. If the motor vehicle user actuates such an operating element, a vehicle function can thereby be activated, ie an action is initiated. The key signals are read in and evaluated by the controller for the recognition of the actuation. A so-called grounding switch is often used in the operating element, ie the signal input of the controller is electrically connected or short-circuited to ground potential during operation of the operating element. If the control unit detects a voltage drop at the signal input, ie a voltage value which is less than a predetermined threshold value at the control input, the control unit recognizes that the control element...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K37/06
CPCB60K37/06B60K2370/143H03K5/1254G06F11/0739H03K17/16
Inventor J·哈特曼P·萨斯曼绍森
Owner AUDI AG
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