CN2140084Y - Pocket detector for fluorescent anti-forge sign - Google Patents

Abstract

The utility model belongs to a detection device illuminated by a special light source, comprising an ultraviolet light source, a control circuit, and a casing, wherein, the ultraviolet light source uses a stroboscopic xenon lamp, and the control circuit is composed of an oscillation voltage increase part and a stroboscopic generator. When the utility model is used, a press button is pressed by hand, the detector can send out the ultraviolet stroboscopic light, and the fluorescent anti-counterfeiting mark can be recognized visually. The utility model has the advantages of small size, light weight, simple operation, easy observation, and low cost. The utility model is used for identifying the currency, the trademark, the valuable paper, the secret writing file, and the official seal, which have the fluorescent anti-counterfeiting marks.

Description

Pocket detector for fluorescent anti-forge sign

The utility model belongs among the G07 device that detects the coin true and false with ultraviolet illumination, and it relates to the structure of the pick-up unit that is used to differentiate fluorescent anti-fake mark.

Present increasing owing to fake and inferior commodities, the producer of famous-brand and high-quality goods all considers to adopt the means of anti-fake mark with difference true and false good and evil, the general common trade mark that the employing holograph is arranged, on commodity, imbed magnetic mark, on commodity, imbed metal object, and the anti-fake mark that stamps fluorescence etc. is several, and then three kinds all is intuitively sightless.Last a kind of fluorescent anti-fake mark can be imprinted on coin or commodity surface, and this mark can send fluorescence and shows after with UV-irradiation.In existing fluorescent anti-fake mark pick-up unit, all adopting the ultraviolet lamp tube that charges into mercury vapour is the discriminating that ultraviolet source is realized the measured object true and false.But have the longer dimension of the ultraviolet lamp tube that charges into mercury vapour now, thereby limited the miniaturization of this pick-up unit, make it be unfavorable for carrying.

The purpose of this utility model provides a kind of detecting device of fluorescent anti-fake mark of pocket-sized handheld formula, and it adopts new type light source and is different from the strobe mode of mercury lamp Continuous irradiation, and it has little, the in light weight and convenience operation of volume.

By as above design, the pocket fluorescent anti-fake mark detecting device that this programme provided by ultraviolet source, control circuit, and casing form, its concrete feature is: its ultraviolet source adopts the xenon lamp fluorescent tube of pulse stroboscopic; Its control circuit is by power supply, pulse boosting part and strobe generator are formed, its pulse boosting partly comprises transformer TB, the oscillator that BG1 and R1C1 constitute, commutator tube D and charging capacitor C2, its strobe generator is by charging capacitor C3, thyristor SCR, the bleeder circuit R2R3R4 and the trigger winding TC of series connection constitute, wherein the charging circuit of R2C3 formation is in parallel with the charging capacitor C2 of pulse boosting part, point links to each other with the silicon controlled anode through the primary coil of trigger winding among two contacts in the bleeder circuit of R2R3R4 series connection, among two contacts following links to each other with the silicon controlled trigger electrode, the anode of thyristor also links to each other through the trigger electrode of the secondary of trigger winding with the xenon lamp fluorescent tube, its casing is the housing of hand-held plastics matter, cap part internal fixation at the housing front end is installed the xenon lamp fluorescent tube, and the light-filtering glass of ultraviolet light is housed in fluorescent tube the place ahead.

The front end suit of casing cap part short Taper Pipe shape light shield in this programme.Its control circuit can adopt the dry cell in the shell, also can adopt external direct supply.

Ultraviolet source in this detecting device has adopted the xenon lamp fluorescent tube, and its work the time also has more rich ultraviolet light part except that sending white light, adopt this kind fluorescent tube can realize microminiaturization, for energy savings be convenient to observe and adopt continuous strobe mode.

Adopt this programme can embody following superiority: 1. to use xenon source can realize microminiaturization, be easy to carry and on-the-spot the use; 2. adopt the mode of continuous stroboscopic to be convenient to accurate observation; 3. its uses easy to operately, connects the ultraviolet light that switch just has stroboscopic at once, can demonstrate anti-fake mark exactly at once and winnows truth from falsehood; 4. cost simple in structure is low and the life-span is high, is convenient to produce in batches promote the use of.

Fig. 1 is the structural representation of the pocket fluorescence falsification preventing mark of this programme detecting device.

Fig. 2 is the schematic diagram of this programme control circuit.

Structure and principle of work below in conjunction with description of drawings this programme embodiment, the casing of plastics (1) is divided into three parts, aft section packed battery E(6), the wiring board (4) of pars intermedia packing control circuit, front end lamp head packing xenon lamp fluorescent tube (2), ultraviolet light light-filtering glass (3), the lamp holder outside is gone back suit and light shield (7), at the side of housing the K switch (5) of push button is housed, and leaves the socket (8) of external direct current power supply in lower part of frame.

During work power switch K is connected, the oscillatory circuit that is made of BG1, C1, R7 and transformer produces vibration, boosts to more than the 300V through transformer TB, charges to C2 after delivering to the D1 rectification.The direct current of the output of rectification simultaneously also charges to C3 through R2, along with the charging A point current potential of C3 rises gradually, controllable silicon conducting when A point current potential reaches silicon controlled conducting current potential, at this moment C3 discharges to controllable silicon by the primary coil of trigger winding TC, boost to more than the 10000V through TC, the high pressure of output triggers the xenon lamp conducting, discharge makes its flash of light to C2 to the xenon lamp two ends, flash of light back C2 and C3 are recharged the aforesaid flash of light process of finishing once more, because the effect of controllable silicon strobe goes round and begins again it, the formation consecutive pulses triggers, and xenon lamp just sends strobe light.This light just obtains desirable ultraviolet light after by the ultraviolet light color filter, because flashing rate is very fast, can clearly see complete fluorescent anti-fake mark when people observe, and can judge its true and false exactly.

Thyristor SCR adopts the MCR-147 type in the present embodiment, and xenon lamp adopts the 1013TJN type, and battery saves with No. 5 batteries two, and its physical dimension is 110 * 18 * 30mm, the about 50g of weight.This detector arrangement is simple, easy to carry, detect directly perceived, try out the Renminbi of multiple foreign currencies such as can detecting dollar, Hongkong dollar and new edition through pilot sample, also can detect the article such as various bills, securities, secret writing file, official seal seal, product brand of printing anti-fake mark with fluorescent ink, this project this by the inspection work that full-time department carries out, now can be generalized to society, spread to masses, to safeguarding the masses' just rights and interests, prevent that the circulation of counterfeit goods from having played positive effect.

Claims (3)

1, a kind of detecting device of pocket fluorescent anti-fake mark, it by ultraviolet source, control circuit, and casing formed, it is characterized in that the xenon lamp fluorescent tube (2) of its ultraviolet source employing stroboscopic; Its control circuit (4) is made up of power supply, pulse boosting part and strobe generator, and its pulse boosting partly comprises transformer TB, BG ₁And R ₁C ₁The oscillator and commutator tube D and the charging capacitor C that constitute ₂, its strobe generator is by charging capacitor C ₃, thyristor SCR, series connection bleeder circuit R ₂R ₃R ₄And trigger winding TC constitutes R ₂C ₃The charging capacitor C of charging circuit that constitutes and oscillation boosting part ₂Parallel connection is at R ₂R ₃R ₄The point of going up of two contacts links to each other with the anode of thyristor through the primary coil of trigger winding in the bleeder circuit of series connection, in two contacts following links to each other with the silicon controlled trigger electrode, and the silicon controlled anode also links to each other with the trigger electrode of xenon lamp fluorescent tube G through the secondary coil of lashing ring; Its casing (1) is the housing of hand-held plastics matter, and the cap part internal fixation of the front end of this housing is installed the xenon lamp fluorescent tube, and ultraviolet light light-filtering glass (3) is housed in fluorescent tube the place ahead.

2,, it is characterized in that it being that its front end suit of casing cap part Taper Pipe shape light shield (7) according to the described detecting device of claim 1.

3,, it is characterized in that power supply in its control circuit can adopt the dry cell (6) in the casing, also can adopt external direct supply according to the described detecting device of claim 1.

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