Device and method for automatic zero correction of automobile instrument pointer based on image processing and meta-programming technology

An automobile instrument and image processing technology, which is applied in the field of automatic zero correction device of automobile instrument pointer, can solve the problems of manual work, inaccurate zero position, and low precision, and achieve the effects of good scalability, improved accuracy, and high work efficiency

Active Publication Date: 2016-08-24
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the zero position of the existing automobile instrument pointer is manually corrected, the precision is low and the zero position is easily misaligned, and an automatic zero position of the automobile instrument pointer based on image processing and meta-programming technology is provided. Corrective device and method

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  • Device and method for automatic zero correction of automobile instrument pointer based on image processing and meta-programming technology
  • Device and method for automatic zero correction of automobile instrument pointer based on image processing and meta-programming technology

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specific Embodiment approach 1

[0034] Specific implementation mode one: the following combination figure 1 and figure 2 Illustrate this embodiment, the auto meter pointer zero position automatic correction device based on image processing and meta-programming technology described in this embodiment, it comprises:

[0035] It is used to control the initialization of the automotive instrument system, control the industrial camera for image acquisition, process the grayscale image of the instrument collected by the industrial camera to obtain the zero deviation value of the instrument pointer; define the interface for obtaining the zero deviation value of the motor module, in the form of macro definition Declare the parameters to be adjusted by the motor module, write the zero deviation value and the parameters to be adjusted into the independent header file of the motor module, preset the default value of the motor module, and save the zero deviation value obtained from time to time as a macro The definitio...

specific Embodiment approach 2

[0043] Specific implementation mode two: the following combination figure 1 This embodiment will be described. This embodiment will further explain the first embodiment. In this embodiment, the grayscale image of the instrument collected by the industrial camera is processed to obtain the zero deviation value of the instrument pointer, which is realized by an image processing module, which includes:

[0044]The preprocessing module is used to perform image preprocessing on the grayscale image of the meter, and then perform binarization processing to obtain the grayscale image of the meter to be recognized;

[0045] An image processing module that is used to extract the dial scale information from the grayscale image of the instrument to be recognized to obtain the instrument panel image, then perform Hough circle transformation on the instrument panel image, and finally determine the center of the instrument panel circle;

[0046] A polar coordinate transformation module for p...

specific Embodiment approach 3

[0050] Specific implementation mode three: the following combination figure 1 and figure 2 Illustrate the present embodiment, the automobile meter pointer zero position automatic correction method based on image processing and meta-programming technology described in the present embodiment, it comprises:

[0051] It is used to control the initialization of the automobile instrument system through the visual detection module, control the industrial camera for image acquisition, process the grayscale image of the instrument collected by the industrial camera to obtain the zero deviation value of the instrument pointer; define the zero deviation value acquisition interface of the motor module, and Declare the parameters to be adjusted by the motor module in the form of macro definition, and write the zero deviation value and the parameters to be adjusted into the independent header file of the motor module, preset the default value of the motor module, and save the zero position...

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Abstract

The invention relates to an automatic zero-position correction device and method for pointers of automobile meters based on image processing and meta-programming technology, and belongs to the technical field of zero-position correction of pointers of automobile meters. The invention solves the problem that the zero position of the existing automobile instrument pointer is manually corrected, and the precision is low and the zero position is easily misaligned. The device includes a visual detection module, an industrial camera and a program writer; the method starts with the internal program of the automobile instrument, and makes different modifications to the instrument initialization program according to different situations of the instrument, taking into account the program parameters corresponding to the speed, pointer angle and motor rotation angle They are all linear correspondences, only change the number of motor revolutions at the zero position, so that after the car is started, the pointer points to the zero position accurately. Since the zero position deviation parameters of each instrument are different, it is necessary to perform zero position detection first, and then correct it. The invention is used for the automatic correction of the pointer of the automobile instrument.

Description

technical field [0001] The invention relates to a device and method for automatically correcting the zero position of an automobile instrument pointer based on image processing and meta-programming technology, and belongs to the technical field of zero position correction of an automobile instrument pointer. Background technique [0002] The assembly line operation is adopted in the production of automobile instruments, and the degree of mechanization and electrification is relatively high. Only the installation of the instrument pointer is still manual work. Because the needle and the needle shaft are interference fit, and because the automobile instrument is a precision instrument, the processing accuracy and quality The requirements are high, and the accuracy and quality of the manual method are unsatisfactory, and the zero position is extremely prone to misalignment. Therefore, the automotive instrument production industry urgently needs a reliable method for automaticall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D18/00
Inventor 高会军李竹奇于金泳肖峰李博伦由嘉
Owner HARBIN INST OF TECH
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