Lower beam detecting method of vehicular head light detector and detecting mechanism thereof

The technology of a headlamp and a detector is applied in the field of low beam detection of a vehicle headlamp detector and its detection mechanism, which can solve the problems of a large amount of processing data, a complex control system, a long processing time, and the like, and achieves less data processing. , the effect of low hardware requirements and fast processing speed

Active Publication Date: 2007-05-23
NANHUA INSTR CO LTD
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Problems solved by technology

This implementation method requires a large and complex control system, and the processing data volume is large, and the processing time is relatively long

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  • Lower beam detecting method of vehicular head light detector and detecting mechanism thereof
  • Lower beam detecting method of vehicular head light detector and detecting mechanism thereof
  • Lower beam detecting method of vehicular head light detector and detecting mechanism thereof

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Embodiment Construction

[0016] Referring to FIG. 3 and FIG. 4 , the low-beam light pattern of the measurement screen 7 in this embodiment is divided into a dark area 1 , a light-dark transition area 2 , and a bright area 3 by the low-beam and dark cut-off line 16 . The photoelectric conversion elements on the measurement screen 7 are arranged around the characteristic boundary of the low light and dark cut-off line. On the measurement screen 7, the photoelectric conversion elements are arranged obliquely to the right side of the Y axis and parallel to the Y axis to detect the horizontal irradiation direction of the low beam. The photoelectric conversion element group 9 and the photoelectric conversion element group 8 for detecting the vertical irradiation direction of the low beam arranged on the left side of the Y axis and parallel to the Y axis, and the photoelectric conversion element group 9 for detecting the horizontal irradiation direction of the low beam are converted by the upper horizontal lig...

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Abstract

The invention discloses the near-ray detection method and detection equipments for vehicle headlight tester. After near-ray beam pooling, through a half mirror, it falls on the measurement screen, and according to the near-ray dark-bright line, the near-ray photic-type can be divided into the dark-district, the dark-light-transition-district, the light-district, and the photoelectric conversion components group for detecting near-ray horizontal irradiation direction and the photoelectric conversion components group for detecting near-ray vertical irradiation direction is laid in the measurement screen, the first arranged photoelectric conversion components of the two groups laid in the dark-district of the near-ray photic-type, the middle arranged photoelectric conversion components of the two groups laid in the dark-light-transition-district of the near-ray photic-type, the last arranged photoelectric conversion components of the two groups laid in the light-district of the near-ray photic-type; by detecting the change of the characteristics signals output by the two photoelectric conversion components groups, it can detect the position of the near-ray beam. The invention has the advantages of: the system hardware requirements low, the photoelectric conversion components less, simple structure, low cost, low data processing quantity, and quick speed.

Description

technical field [0001] The invention belongs to a low beam detection method and a detection mechanism of a vehicle headlight detector. Background technique [0002] At present, motor vehicles are all equipped with headlamps for night lighting, and the light beams of headlights are divided into two types: high beam and low beam. Usually when detecting vehicle headlights, the vehicle high beam signal and low beam signal detected by the detector are compared with the national standard high beam spot and standard low beam cut-off line respectively, because the light pattern of the high beam is Symmetrical ones are easy to detect, but the asymmetrical light pattern (as shown in Figure 1) at the speed of low beams makes it difficult to detect low beams. The low-beam detection of the manual light instrument is completed through the visual inspection of the inspectors, which greatly reduces the detection accuracy and efficiency. At present, most of the fully automated headlight de...

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Application Information

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IPC IPC(8): G01J1/04G01M11/06
Inventor 江智辉苏启源刘辉
Owner NANHUA INSTR CO LTD
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