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Light intensity detecting system for mobile phone sterilizer ultraviolet lamp tube

A technology of mobile phone sterilizer and light intensity detection, which is applied in the direction of using electric radiation detectors for photometry, etc., can solve the problems of failing to reach the disinfection target and weakening of ultraviolet radiation intensity, and achieve a compact system structure, low price, and easy integration Effect

Inactive Publication Date: 2013-09-25
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the problem that the ultraviolet radiation intensity of the ultraviolet mobile phone sterilizer is weakened due to the aging of the lamp tube, and the disinfection target cannot be reached within the specified time, the present invention proposes a light intensity detection system for the ultraviolet lamp tube of the mobile phone sterilizer. Adjust the working time of the mobile phone sterilizer according to the intensity of the indicated lamp tube and the required disinfection time to achieve the ideal disinfection effect

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  • Light intensity detecting system for mobile phone sterilizer ultraviolet lamp tube

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Embodiment Construction

[0013] Mobile phone sterilizer ultraviolet lamp light intensity detection system of the present invention, as figure 1 As shown, it includes an ultraviolet sensor, an I-V change module, a voltage amplification module, a threshold comparison module, a display driver module and a display module.

[0014] The ultraviolet sensor is selected from UVC band ultraviolet sensor, its peak response is at 270nm, and the response rate is 0.18A / W.

[0015] The I-V conversion module and the voltage amplifying module select 2-way integrated operational amplifier AD822, its input bias current is less than 25pA, and the typical input resistance is 10pA 13 Ω.

[0016] The threshold comparison module and the display driver module use 4-channel integrated comparator LM339, whose output has an OC gate structure and can be used to drive LEDs to emit light.

[0017] The display module adopts an integrated tricolor LED chip, which is a four-pin chip package with a common anode structure, low driving...

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Abstract

The invention discloses a light intensity detecting system for a mobile phone sterilizer ultraviolet lamp tube. The light intensity detecting system comprises an ultraviolet sensor, an I-V conversion module, a voltage amplification module, a threshold comparison module, a display driver module and a display module. According to the light intensity detecting system for the mobile phone sterilizer ultraviolet lamp tube, the ultraviolet sensor is used for detecting the ultraviolet strength of the mobile phone sterilizer lamp tube, indicating the strength grade of the ultraviolet lamp tube through the display module and controlling sterilizing time according to the displayed strength grade of the lamp tube, and thus the purpose of complete sterilization is achieved. The light intensity detecting system has the advantages of being small and exquisite in structure, convenient to integrate, low in cost and the like.

Description

technical field [0001] The invention relates to a light intensity detection system, in particular to a light intensity detection system for an ultraviolet lamp tube of a mobile phone sterilizer. Background technique [0002] The methods of cleaning mobile phones mainly include alcohol wipe, disinfectant wipe, ultraviolet radiation and so on. The first two methods are based on chemical disinfection methods. The mobile phone sterilizer based on ultraviolet radiation is safe and non-toxic. It mainly uses the radiation operation on microorganisms (bacteria, viruses and other pathogens) and the function of destroying nucleic acids to kill microorganisms and achieve the purpose of disinfection. , this method is considered the best way of disinfection and sterilization. [0003] The current ultraviolet mobile phone sterilizer uses ultraviolet lamps as the radiation source, and the disinfection time is set to a fixed value. Due to the inherent aging and attenuation of the ultraviol...

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Application Information

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IPC IPC(8): G01J1/42
Inventor 鞠洪伟张涛郑伟波蔡萍刘方武
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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