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License plate identification apparatus capable of adjusting luminous flux and method for manufacturing same

A technology of license plate recognition and production method, which is applied in the fields of optics, nonlinear optics, instruments, etc., and can solve problems such as the large influence of sunlight and the inability to adjust the light transmittance of the camera

Inactive Publication Date: 2016-02-24
蔡雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the cameras of existing devices generally cannot adjust the light transmittance, which is inconveniently affected by sunlight

Method used

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  • License plate identification apparatus capable of adjusting luminous flux and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Assemble the license plate recognition device 10 , the electrochromic device 20 and the controller 30 .

[0069] Making the electrochromic device 20 includes:

[0070] (1) WO 3 Nano film 5 material electrochromic electrode preparation:

[0071] a. Magnetron sputtering a fluorine-doped tin oxide (FTO) film 2 on the surface of tempered glass 1 with a specific size, with a thickness of about 320nm;

[0072] b. Perform high-temperature annealing treatment on it to obtain FTO conductive glass with higher strength, then ultrasonically clean the FTO conductive glass for 15 minutes in the order of ultrapure water, acetone, and ethanol, and dry it for later use; then, use magnetron sputtering method Coating W film on FTO glass with a thickness of 220nm; W film is used as WO 3 a growth source for the nanowires;

[0073] c. Prepare a 0.2mol / L sodium tungstate aqueous solution, then add 3mol / L hydrochloric acid dropwise until no precipitation occurs, and then dissolve the obtai...

Embodiment 2

[0088] Assemble the license plate recognition device 10 , the electrochromic device 20 and the controller 30 .

[0089] Making the electrochromic device 20 includes:

[0090] (1) WO 3 Nano film 5 material electrochromic electrode preparation:

[0091]a. Magnetron sputtering fluorine-doped tin oxide (FTO) film 2 on the surface of tempered glass 1 with a specific size, with a thickness of about 360nm;

[0092] b. Perform high-temperature annealing treatment on it to obtain FTO conductive glass with higher strength, then ultrasonically clean the FTO conductive glass for 15 minutes in the order of ultrapure water, acetone, and ethanol, and dry it for later use; then, use magnetron sputtering method Coating W film on FTO glass with a thickness of 200nm; W film is used as WO 3 a growth source for the nanowires;

[0093] c. Prepare a 0.2mol / L sodium tungstate aqueous solution, then add 3mol / L hydrochloric acid dropwise until no precipitation occurs, and then dissolve the obtained...

Embodiment 3

[0108] Assemble the license plate recognition device 10 , the electrochromic device 20 and the controller 30 .

[0109] Making the electrochromic device 20 includes:

[0110] (1) WO 3 Nano film 5 material electrochromic electrode preparation:

[0111] a. Magnetron sputtering a fluorine-doped tin oxide (FTO) film on the surface of tempered glass 1 with a specific size, with a thickness of about 340nm;

[0112] b. Perform high-temperature annealing treatment on it to obtain FTO conductive glass with higher strength, then ultrasonically clean the FTO conductive glass for 15 minutes in the order of ultrapure water, acetone, and ethanol, and dry it for later use; then, use magnetron sputtering method Coating W film on FTO glass with a thickness of 210nm; W film is used as WO 3 a growth source for the nanowires;

[0113] c. Prepare a 0.2mol / L sodium tungstate aqueous solution, then add 3mol / L hydrochloric acid dropwise until no precipitation occurs, and then dissolve the obtaine...

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Abstract

The invention discloses a license plate identification apparatus capable of adjusting luminous flux and a method for manufacturing same. According to the invention, the structure and manufacturing technology of an electrochromic device are improved, so that the electrochromic device can be self-powered, and the license plate identification apparatus which is short in response time, wide in luminous flux adjusting range, prolonged in service lifetime, high in freezing tolerance, and capable of adjusting the luminous flux can be prepared, the license plate identification apparatus can adjust the luminous flux according to the sunlight intensity, and therefore license plates can be clearly identified under a complex illumination environment. The method for manufacturing the license plate identification apparatus is easy to operate, and facilitates industrial production.

Description

technical field [0001] The invention belongs to the field of automobiles, and more specifically relates to a license plate recognition device capable of automatically adjusting luminous flux and a manufacturing method thereof. Background technique [0002] License plate recognition technology is an application of computer video image recognition technology in vehicle license plate recognition. It can extract and recognize moving license plates from complex backgrounds, and is widely used in highways, electronic eyes, etc. It can realize detection and alarm, penalties for speeding violations, vehicle entry and exit management, automatic release, expressway tolls, etc. It is mainly composed of camera, main control machine, acquisition card, lighting device and so on. [0003] However, the cameras of existing devices generally cannot adjust the light transmittance, and there is inconvenience that they are greatly affected by sunlight. Contents of the invention [0004] Base...

Claims

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Application Information

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IPC IPC(8): G02F1/15G02F1/155G02F1/163
CPCG02F1/1523G02F1/155G02F1/163
Inventor 蔡雄
Owner 蔡雄
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