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A method for automatic detection of instrument pointer

An instrument pointer and automatic detection technology, which is applied in the direction of instruments, can solve the problems of high misjudgment rate, strong subjectivity of test standards, and low detection efficiency of instrument pointer rotation sensitivity, so as to reduce the high misjudgment rate and reduce labor costs. Investment, the effect of improving detection efficiency and detection accuracy

Active Publication Date: 2022-02-01
HUIZHOU DESAY SV AUTOMOTIVE
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Problems solved by technology

[0005] The invention provides an automatic detection method for instrument pointers, which solves the technical problems of low detection efficiency, high subjectivity of test standards, high misjudgment rate, and high cost in existing instrument pointer rotation sensitivity

Method used

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  • A method for automatic detection of instrument pointer
  • A method for automatic detection of instrument pointer
  • A method for automatic detection of instrument pointer

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Embodiment Construction

[0033] The embodiment of the present invention will be explained in detail below in conjunction with the accompanying drawings. The examples given are only for the purpose of illustration, and cannot be interpreted as limiting the present invention. The accompanying drawings are only for reference and description, and do not constitute the scope of patent protection of the present invention. limitations, since many changes may be made in the invention without departing from the spirit and scope of the invention.

[0034] The embodiment of the present invention provides a method for automatic detection of instrument pointers, such as figure 1 As shown, in this embodiment, steps are included:

[0035] S1. Drive the pointer of the instrument to rotate from the initial position in a predetermined direction, and at the same time time each detection cycle;

[0036] S2. Calculate the estimated digital area pointed by the meter pointer at this time according to the needle tip positio...

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Abstract

The invention provides a method for automatic detection of instrument pointers. The high-resolution image of the movement of the pointer on the vehicle instrument dial is collected by a high-speed high-definition camera, and the pixel point position of the pointer tip position in the image is obtained through feature extraction, and further established according to the pixel point position. The location of the digital center point and then determine the estimated digital area, judge whether the pointer points to the number by whether the displayed number corresponding to the estimated digital area can be extracted from the font library, and if so, obtain the current actual time stamp and compare it with the theoretical time stamp range, according to Whether the actual time stamp is within the range of the theoretical time stamp determines whether the pointer of the instrument is stuck or moves too fast when it rotates through each detection cycle. The invention improves the detection efficiency and detection accuracy of the vehicle-mounted instrument panel, reduces the input of labor costs, and reduces the high misjudgment rate caused by the limitation of manual detection.

Description

technical field [0001] The invention relates to the technical field of instrument equipment detection, in particular to an automatic detection method for instrument pointers. Background technique [0002] Meter, the general term for instruments that display numerical values; meter pointer, refers to the parts used to indicate data on the meter. The function of the pointer is to display the complex data structure indicated on the instrument in a more objective and direct way. Under the specified working conditions, the ability of certain performance of the instrument to remain unchanged over time is called stability. The stability of the instrument is directly related to the scope of use of the instrument. The impact caused by poor stability of the instrument often leads to a decrease in the accuracy of the instrument. The movement of the instrument pointer can most intuitively reflect the stability change of the instrument. [0003] The car dashboard is a device used to re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D18/00
CPCG01D18/00
Inventor 隋延春
Owner HUIZHOU DESAY SV AUTOMOTIVE
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