Sensor circuit for detecting thickness of sunscreen

Abstract

The invention discloses a sensor circuit for detecting the thickness of a sunscreen. The sensor circuit comprises a UV generation and control circuit, a UV photoelectric detection and control circuit,a micro current amplifying circuit, a microprocessor and an auxiliary circuit; the UV generation and control circuit is electrically connected with the microprocessor and is controlled by the microprocessor; the UV photoelectric detection and control circuit is electrically connected with the micro current amplifying circuit; the micro current amplifying circuit is electrically connected with themicroprocessor; the auxiliary circuit is electrically connected with the microprocessor so as to provide power for the whole circuit; and an optical filter is connected with the UV generation and control circuit and the UV photoelectric detection and control circuit. With the sensor circuit of the invention adopted, measurement is performed on portions requiring sunscreen application when a useruses the sunscreen, so that whether the sunscreen is applied to the portions can be detected, and the thickness of the applied sunscreen can be detected, and therefore, the user can use the sunscreento avoid being burnt by ultraviolet rays.

Description

technical field [0001] The invention relates to the technical field of ultraviolet detection circuits, in particular to a sensor circuit for detecting the thickness of sunscreen. Background technique [0002] Ultraviolet light refers to light with a wavelength of 10 nanometers to 400 nanometers (nm) in sunlight, which can be divided into UVA (ultraviolet A, wavelength 320-400 nanometers, long wave), UVB (wavelength 280-320 nanometers, medium wave), UVC (wavelength 100 ~280nm, short wave). UVA is the most carcinogenic, and its sunburn and sunburn effects are 1000 times that of UVB. UVC can be blocked by the ozone layer. Ultraviolet radiation will cause the skin to generate a large number of free radicals, resulting in the peroxidation of the cell membrane, causing melanocytes to produce more melanin, and distribute it upward to the stratum corneum of the epidermis, resulting in black spots. Ultraviolet rays can be said to be the biggest culprit causing skin wrinkles, aging...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a sensor circuit for detecting the thickness of sunscreen, which can solve the problem of measuring whether the sunscreen is applied and the thickness of the application at the application site when the user uses the sunscreen, so that the user can use the sunscreen to avoid being burned by ultraviolet rays Advantages, it solves the problem that the sunscreen is applied unevenly or too thinly, which makes the preventive effect of the sunscreen worse or even useless, and the problem that the naked eye cannot judge

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