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Double-channel acquisition and verification physical key

A button and physical technology, applied in the field of dual-channel acquisition and verification of physical buttons, can solve the problem of insufficient reliability of physical buttons

Active Publication Date: 2019-10-08
GAC COMPONENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a dual-channel acquisition and verification physical key to solve the problem that the reliability of the physical key is not high enough in the prior art

Method used

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  • Double-channel acquisition and verification physical key
  • Double-channel acquisition and verification physical key
  • Double-channel acquisition and verification physical key

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The invention discloses a dual-channel acquisition and verification physical key, which is provided with a keycap, a dual-channel acquisition circuit and a control module; the dual-channel acquisition circuit includes a first acquisition circuit and a second acquisition circuit that work independently of each other. In the case of no failure, they can both be in the triggered state when the keycap is pressed and in the untriggered state when the keycap is not pressed, and both can generate different electrical signal values ​​when in the triggered state and the untriggered state The control module can receive the electrical signal values ​​generated by the first acquisition circuit and the second acquisition circuit every time a collection period has elapsed, which are respectively recorded as the first electrical signal acquisition value P and the second electrical signal acquisition value P ';

[0086] The aforementioned dual-channel acquisition circuit can adopt any cir...

Embodiment approach

[0118] The button output electrical signal also includes a fault state variable;

[0119] Such as figure 2 As shown, the inconsistent fault detection step described in step S3 further includes:

[0120] Step S3-3: When it is determined in step S3-2 that the timing time of the inconsistent fault clock exceeds the preset inconsistent fault time threshold, the fault state variable is refreshed to an inconsistent fault state, which indicates that the two-way collection and calibration Verify that the physical keys have an inconsistency fault, that is, the states of the first acquisition circuit and the second acquisition circuit are inconsistent;

[0121] Step S3-4: When the fault state variable is an inconsistent fault state, in each collection period, it is judged whether the timing time of the inconsistent fault clock has been cleared, and if the judgment result is yes, then the inconsistent fault recovery is started When the inconsistent fault recovery timing reaches a preset incon...

Embodiment 3

[0125] On the basis of the foregoing embodiment 1 or embodiment 2, this embodiment 3 also adopts the following preferred implementation modes:

[0126] The button output electrical signal also includes a fault state variable;

[0127] Such as image 3 with Figure 4 As shown, the electrical signal fault detection step in step S4 further includes:

[0128] Step S4-3: If only the timing time of the first electrical signal failure clock exceeds the electrical signal failure time threshold, refresh the failure state variable to the first electrical signal failure state, indicating that the dual There is an electrical signal failure in the first acquisition circuit of the physical button for collecting and verifying the physical key;

[0129] If only the timing time of the second electrical signal failure clock exceeds the electrical signal failure time threshold, then the failure state variable is refreshed to the second path of electrical signal failure state, which means that the two-wa...

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Abstract

The invention discloses a two-way acquisition and verification physical key. The two-way redundancy design is realized through the steps S1 and S2; in the step S3-1 and S3-2, inconsistent faults of the first acquisition circuit and the second acquisition circuit are detected, so that the error influence of the inconsistent faults on a key state variable of a key output electric signal is avoided,and the reliability of a physical key is improved; in the step S4-1 and S4-2, the electric signal faults of the first and second acquisition circuits are detected, so that the error influence of the electric signal faults on the key state variable of the key output electric signal is avoided, and the reliability of the physical key is improved; in the step S5-1 and S5-2, the adhesion faults of thefirst acquisition circuit and the second acquisition circuit are detected, so that the error influence of the adhesion faults on the key state variable of the key output electric signal is avoided, and the reliability of the physical key is improved. Therefore, the possible fault condition of the physical key is overcome, the reliability of the physical key can be greatly improved, and the smoothrealization of the key operation intention of a user is ensured.

Description

Technical field [0001] The invention relates to a two-way acquisition and verification physical key. Background technique [0002] With the increasing popularity of automobile electrification, the way of signal transmission in automobiles has gradually changed from traditional machinery to electricity. Whether the electric signal can be generated accurately and in time is the first step in whether the driver's intention can be realized, which is related to driving safety. [0003] Physical buttons are an important source of electrical signals. Whether a physical button can generate electrical signals in a timely and accurate manner after the driver operates it is an important indicator for evaluating the performance of the physical button. [0004] At present, most of the physical buttons in the vehicle adopt the design method of single-channel acquisition and verification. By collecting the voltage changes of single-channel hardware and calculating by software, it is judged whethe...

Claims

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Application Information

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IPC IPC(8): H03M11/02
CPCH03M11/02Y02P90/02
Inventor 王琪易勇帆黄锐景刘海荣黄迅
Owner GAC COMPONENT CO LTD
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