CN201032906Y

CN201032906Y - Portable ultraviolet ray intensity indicating cosmetic mirror

Info

Publication number: CN201032906Y
Application number: CNU2007200320607U
Authority: CN
Inventors: 曹东生
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-01
Filing date: 2007-06-01
Publication date: 2008-03-12
Anticipated expiration: 2017-06-01

Abstract

The utility model relates to an indicative makeup mirror to measure ultraviolet intensity, which is characterized in that the structure arranges an ultraviolet sensor, a circuit board and a plane mirror into a mirror frame. Wherein, the plane mirror is independently embedded into the mirror frame. The ultraviolet sensor is welded at an end (a) and an end (b) of the circuit board provided with a LED and a signal processing integrated circuit. The utility model utilizes the ultraviolet sensor and an amplifying circuit to form a detecting circuit to detect sunshine, fulfills updating every second to indicate ultraviolet value variation with three colors of LED according to different grades and remind people to take preventive measures against ultraviolet rays. Moreover, the utility model has the advantages of lower cost, portability and mobility at will to measure real-time index.

Description

Portable ultraviolet intensity indication vanity mirror

Technical field

The utility model relates to a kind of measurement uitraviolet intensity indication vanity mirror.

Background technology

Harmful ultraviolet energy increases the weight of along with environmental pollution and gets more and more, and according to World Health Organization's statistics, the annual number of suffering from cutaneum carcinoma in the whole world constantly rises, and this all follows the increase of uitraviolet intensity relevant.

Summary of the invention

The purpose of this utility model aims to provide a kind of portable ultraviolet intensity indication vanity mirror.Being about to just. the formula of taking is measured ultraviolet ray intensity meter in real time and is embedded in the portable small mirror of people's daily life use, sunshine is detected, and ultraviolet numerical value change is done different color demonstrations by different brackets with three-color LED implement to upgrade with per second, can do precautionary measures to ultraviolet ray.

The purpose of this utility model is achieved in that

A kind of portable ultraviolet intensity indication vanity mirror, be that UV sensor, circuit board and level crossing are packed in the picture frame, level crossing independently embeds picture frame, and UV sensor is welded on the (a) and (b) end of the circuit board that has LED demonstration and signal processing integrated circuit.

Everybody one is known, amount of ultraviolet irradiation probably accounts for 10% of solar radiation integral energy, can be divided into UV-A (400nm-320nm) according to wavelength, UV-B (320nm-280nm), three wave bands of UV-C (280nm-190nm), basically the short more injury to human body of wavelength is big more, but the ozone layer of atmosphere has extremely strong absorbability to UV-C, so UV-C is difficult for arriving at ground.And UV-A is less to the influence that human body produces, and the main cause that causes the human injury then is the UV-B section, and therefore international linked groups serves as to detect the pointer of ultraviolet (UV)-B section assessment to human body harm with ultraviolet index (UV-Index).

The beneficial effect of advantage of the present utility model and generation is:

Ultraviolet ray is the erythema effect curve of spectrum to the judging basis of human body skin infringement, utilize the ultraviolet index method for real-time measurement, try to achieve instantaneous value with erythema effect spectrum, form a testing circuit in conjunction with UV detector and amplifying circuit, have low-cost and portable advantage, can move arbitrarily to measure real-time index.

Description of drawings

Fig. 1 is the utility model schematic diagram.

Fig. 2 is the utility model theory diagram.

Fig. 3 is the utility model circuit diagram.

Fig. 4 is the utility model program flow chart.

The specific embodiment

Below, in conjunction with the accompanying drawings the utility model is further described again:

Embodiment

As shown in Figure 1.UV sensor 1 and circuit board 2, level crossing 3 are packed in the picture frame 4, level crossing 3 independent embeddings in the picture frames 4, UV sensor 1 is welded on and has that LED shows and the (a) and (b) end of the circuit board 2 of signal processing integrated circuit.

The formula that calculates ultraviolet index is: X=Ф * R*H*C

In the formula: Ф is ultraviolet radiation flux (W), and R is photodetector sensitivity (A/W), and H is circuit conversion magnifying power (V/A), and C is a correction factor.Four multiply each other and can try to achieve X, and unit is a volt (V).Because X is directly proportional with dangerous ultraviolet radiation flux, and International Meteorological Organization is with every 25W/m ²Dangerous ultraviolet radiation flux be defined as 1UV-Index, after calibration comparison, be convertible into ultraviolet index again by above-listed relation, carry out corresponding demonstration according to index.

Fig. 3 is detection, the display circuit of building according to formula X=Ф * R*H*C.U1A, R1, C1 and D1 form ultraviolet I/V change-over circuit, and D1 (UV-460) is a UV sensor, the ultraviolet composition in the monitoring sunshine.Uitraviolet intensity is directly changed into electric current in D1, ultraviolet ray is strong more, and the electric current of D1 induction is big more.Resistance R 1 plays amplification in the I/V change-over circuit, its resistance decision multiplication factor.C1 electric capacity is mended the compensation of tasting sensor reverse junction electric capacity and operational amplifier input capacitance.U1A is the low drift operational amplifier of a high input impedance.Voltage after the amplification enters the in-phase amplifier of being made up of UA2, R2 and R3 by the 1 pin output of U1A, and multiplication factor is made of R3, R2, and the performance indications of U2A are identical with U1A, are homophase amplifiers, voltage signal further is enlarged into A/D prepares.Resistance R 5, R4 constitute load, and R5 is a variable resistor, are used for check-back signal intensity.

U3 is a SOC chip, is made up of A/D and MCU.The uitraviolet intensity signal voltage is imported by 6pin, finishes A/D at chip internal, and logic judges that the standard according to presetting outputs to D2, and D3LED shows.

U4 and C4, C5, C6 forms the LDO circuit, exports one group of stable operating voltage Vcc_3V.

Allow sunshine filter to such an extent that the UV-B band ultraviolet is being converted to current signal by photoelectric detector with optical signal through filter lens, by low temperature drift amplifying circuit electric current is enlarged into magnitude of voltage then, this magnitude of voltage is sent into CY8C21123 (SOC) chip do A/D conversion and ultraviolet index computing, show information (seeing Fig. 2, Fig. 4) such as the real-time ultraviolet index and the index that is exposed to the sun again by the color LED display device.

Claims

1. a portable ultraviolet intensity is indicated vanity mirror, it is characterized in that UV sensor (1) circuit board (2) and level crossing (3) are packed in the picture frame (4), level crossing (3) is independent to embed in the picture frame (4), and UV sensor (1) is welded on the (a) and (b) end of the circuit board (2) that has LED demonstration and signal processing integrated circuit.