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Instrument pointer automatic detection method

An instrument pointer, automatic detection technology, applied in the direction of instruments, etc., can solve the problems of high cost, strong subjectivity of test standards, and high misjudgment rate

Active Publication Date: 2019-11-22
HUIZHOU DESAY SV AUTOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Instrument pointer automatic detection method
  • Instrument pointer automatic detection method

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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 top position of th...

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Abstract

The invention provides an instrument pointer automatic detection method. The method includes the steps of collecting a high-resolution image of movement of a pointer of a dial panel of a vehicle-mounted instrument through a high-speed high-definition camera, obtaining a pixel point position of a pointer tip position in the image through feature extraction, further determining an estimated digitalarea according to a digital center point position determined by the pixel point position, judging whether the pointer points to a number by judging whether a display number corresponding to an estimated number area can be extracted from a word stock, if so, obtaining a current actual timestamp and comparing the current actual timestamp with the theoretical timestamp range, and judging whether thepointer of the instrument is stuck or moves too fast when rotating through each detection period according to whether the actual timestamp is in the theoretical timestamp range. According to the invention, the detection efficiency and the detection precision of the panel of the vehicle-mounted instrument are improved, the investment of labor cost is reduced, and the high misjudgment rate caused bythe limitation of manual detection is reduced.

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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IPC IPC(8): G01D18/00
CPCG01D18/00
Inventor 隋延春
Owner HUIZHOU DESAY SV AUTOMOTIVE
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