CN201215667Y

CN201215667Y - Device for activating and receiving infrared ink signal

Info

Publication number: CN201215667Y
Application number: CNU200820036100XU
Authority: CN
Inventors: 王强; 侯志军
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-03
Filing date: 2008-06-03
Publication date: 2009-04-01
Anticipated expiration: 2018-06-03

Abstract

The utility model relates to a device for exciting and receiving infrared ink signals, which comprises a laser emitter circuit and a shaping output circuit, wherein a laser module group of the laser emitter circuit is arranged on the upper portion of an identified object which contains an infrared ink area, a receiving end is arranged under the identified object, the laser module group and the receiving end are coaxial and confocal, a laser beam which is modulated and formed by the laser module group is a line-shaped line or a crossed line, a filtering element is arranged between the identified object and the receiving end, and the filtering element and the receiving end avoid light and are end-to-end connected, and signals of the receiving end are output by the shaping output circuit. When in application, a sensor is mounted in a discriminator, the output of the receiving end is respectively connected with a genuine-fake indicating lamp and an alarming buzzer through a microprocessor, and the opening height on the inlet of a tested object of the discriminator is not less than 2cm.

Description

Excite the also device of receiving infrared printing ink signal

Technical field

The utility model relates to a kind of laser excitation infrared printing ink that utilizes and produces light signal, and receive the device of this light signal, especially a kind of laser beam by laser module modulation formation one word line or cross curve excites infrared printing ink to produce light signal, and the device of the laser module of Laser emission end and receiving end coaxial confocal.

Background technology

Development along with laser technology, and the utilization of infrared printing ink in false proof field, utilizing the laser infrared printing ink to produce the fluorescent signal is detected by receiving end, extensively applied to real and fake discrimination to bank note, certificate and bill, in the Discr. that uses at present, transmitting and receiving of laser all is the sensor that is " V " font, and the fluorescent signal that the infrared printing ink of laser excitation produces all is to receive by being received termination after the reflection.

CN2745134Y discloses a kind of " testing pseudo-photoelectric commutator ", its luminous chamber and reception cavity are in the shape of the letter V, and optical filter and magnifier are housed in the reception cavity front portion, color filter also is equipped with at the rear portion, luminous chamber and reception cavity formed the debug process difficulty of focus during this photoelectric commutator was not only installed at measured object, and the induced signal that reception cavity is accepted is limited, and magnifier must be set in RX path.

CN1873394A discloses a kind of " laser excitated fluoroscopic detection sensor ", its laser tube becomes 30～60 ° with the measured object plane, have laser tube and detecting device equally, measured object forms the debug process difficulty of focus, and the induced signal that detecting device is accepted is limited.

Adopt the Discr. of above-mentioned two sensors, Φ 1～Φ 2 circular bright spots that laser instrument forms on the infrared printing ink of measured object in the use, need to switch in the inspection pseudoprocess by manual adjustments, make the focus of its focus on infrared printing ink and reception cavity or detecting device identical substantially, could realize the purpose of false distinguishing, in addition, owing to have the gap between measured object and detecting device or the reception cavity, natural light will inevitably produce interference, in order to reduce this interference, the gap of measured object and detecting device or reception cavity is general narrower and small, generally have only 2～3mm, measured object generally can only be in the gap pull, in the use, the operator can't see the round dot of detection substantially, uses and operate all inconveniences.

Summary of the invention

The purpose of this utility model is, Φ 1～Φ 2 circular bright spots that the middle laser instrument that the sensor that is " V " font at transmitting and receiving of the laser that generally uses at present exists forms on the infrared printing ink of measured object, need to switch in the inspection pseudoprocess by manual adjustments, and there is the gap between measured object and detecting device or the reception cavity, natural light will inevitably produce interference, because the gap of measured object and detecting device or reception cavity is general narrower and small, generally has only 2～3mm, measured object generally can only be in the gap pull, the user can't see the round dot of detection substantially, use and operate all a series of problems such as inconvenience, a kind of signal transducer and application thereof of new laser excitation infrared printing ink are provided.

The purpose of this utility model is achieved in that a kind of also device of receiving infrared printing ink signal that excites, comprise laser transmission circuit and shaping output circuit, it is characterized in that: the laser module of laser transmission circuit places the top that contains the infrared printing ink zone of being differentiated thing, receiving end places the below of being differentiated thing, the laser module of Laser emission end and receiving end coaxial confocal, the laser beam that the modulation of laser module forms is a word line or cross curve, differentiated between thing and the receiving end and be provided with filter element, lucifuge is docked between filter element and the receiving end, and the signal of receiving end is exported by the shaping output circuit.

In the utility model: the word line that described laser module modulation forms or the emission wavelength of cross curve laser beam are 850～1500nm.

In the present invention: described filter element can adopt optical filter or optical filtering group; The filter coating that also can be on the receiving plane of receiving end covers by film coating technique.

The invention has the advantages that: because a word line of laser head emission or cross curve laser arrive at the top that contains the infrared printing ink zone of being differentiated thing, and with the receiving end coaxial confocal, it is all very convenient to produce assembling; Because the laser beam that the modulation of laser module forms is a word line or cross curve, enlarged sensing range, be easy in the use at the light signal that is formed a word line or cross curve by the infrared printing ink zone of discriminating thing, and received more light signal through being received termination behind the discriminating thing; Owing to differentiated between thing and the receiving end to be provided with filter element, can filtering differentiate the thing natural light through quilt, guarantee that receiving end receives effective light signal that effective infrared printing ink produces; Because lucifuge is docked between filter element and the receiving end, differentiated that thing directly places on the filter element, significantly reduce or avoided the interference of natural light receiving end, because the detected material porch open height of Discr. is not less than 2cm, discriminating person can observe directly the laser excitation infrared printing ink and produce light signal, has overcome present Laser emission and reception and has been the defective that can't observe laser excitation infrared printing ink generation light signal in the sensor use of " V " font.The present invention can be installed in the Discr., and being used for what contain the false proof district of infrared printing ink is bank note, certificate, the anti-fake bill of carrier, the discriminating of anti-counterfeiting mark with the paper material.

Description of drawings

Fig. 1 is the structural representation of the device of exciting of relating to of the utility model and receiving infrared printing ink signal;

Fig. 2 is the theory diagram of the utility model practical application.

Among the figure: 1, laser module, 2, differentiated thing, 3, filter element, 4, receiving end, 5, the shaping output circuit, 6, laser transmission circuit.

Embodiment

As seen from Figure 1: laser module 1 places the top that contains the infrared printing ink zone of being differentiated thing 2, laser module 1 is differentiated receiving end 4 coaxial confocals of thing below with this, differentiated between thing 2 and the receiving end 4 and be provided with filter element 3, lucifuge is docked between filter element 3 and the receiving end 4, the signal of receiving end 4 is by 5 outputs of shaping output circuit, and the laser beam that described laser module 1 modulation back forms is a word line or cross curve.In the present embodiment, the emission wavelength of laser module 1 emitted laser bundle is 980nm.

As seen from Figure 2, in actual applications, the signal of laser transmission circuit 6 is a word line or cross curve by the laser beam that laser module 1 modulation back forms, laser beam excites infrared printing ink to produce the fluorescent signal after arriving at and being differentiated thing 2, described fluorescent signal and natural light all penetrate differentiates that thing 2 arrives at filter element 3, filter element 3 filtering natural lights make effective fluorescent signal arrive at receiving end 4, and through 5 outputs of shaping output circuit.

During concrete enforcement, the word line that the modulation of laser module forms or the emission wavelength of cross curve laser beam are 850～1500nm, and described filter element 3 can adopt optical filter or optical filtering group; The filter coating that also can be on the receiving plane of receiving end covers by film coating technique.

Described in the utility model excite and the device of receiving infrared printing ink signal can be installed in the Discr., the output of receiving end is connected with alarm buzzer with true and false pilot lamp respectively through microprocessor, the detected material porch open height of Discr. is not less than 2cm, wherein, described microprocessor can adopt 51 Series chip.

Discr. can be only to carry out the false proof specific discriminator of being differentiated thing at the employing infrared printing ink, also can be at adopting infrared printing ink and magnetic and/or watermark to carry out the false proof Discr. of being differentiated thing simultaneously.During installation, the laser module in the laser transmission circuit places the top in the false proof district of infrared printing ink that is differentiated thing, is differentiated the receiving end coaxial confocal of thing below with this.

Described in the utility model excite and the Discr. of the device of receiving infrared printing ink signal can be used for false proof discriminating to the bank note that with the paper material is carrier, certificate, anti-fake bill, anti-counterfeiting mark has been installed.In the use, after a word line or cross curve laser beam arrive at detected bank note, certificate, anti-fake bill, anti-counterfeiting mark, excite the generation light signal if exist, the light signal that receiving end 4 is received connects true (green) signal lamp through 5 outputs of shaping output circuit by microprocessor; Otherwise, then connect pseudo-(redness) signal lamp and alarm buzzer simultaneously, send sound and light alarm.

In view of Laser emission has been the technology of comparative maturity with receiving, in Discr., in the utilization process of the present invention, can adopt ripe laser transmission circuit, and employing and the disclosed shaping output circuit of CN1873394A document.

More than each embodiment be not to concrete restriction of the present utility model.

Claims

1, a kind of also device of receiving infrared printing ink signal that excites, comprise laser transmission circuit and shaping output circuit, it is characterized in that: the laser module of laser transmission circuit places the top that contains the infrared printing ink zone of being differentiated thing, receiving end places the below of being differentiated thing, the laser module of Laser emission end and receiving end coaxial confocal, the laser beam that the modulation of laser module forms is a word line or cross curve, differentiated between thing and the receiving end and be provided with filter element, lucifuge is docked between filter element and the receiving end, and the signal of receiving end is exported by the shaping output circuit.

2, the also device of receiving infrared printing ink signal that excites according to claim 1, it is characterized in that: the word line that described laser module modulation forms or the emission wavelength of cross curve laser beam are 850～1500nm.

3, the also device of receiving infrared printing ink signal that excites according to claim 1, it is characterized in that: described filter element is optical filter or optical filtering group.

4, according to claim 1 exciting and the device of receiving infrared printing ink signal is characterized in that: described filter element is the filter coating that covers by film coating technique on the receiving plane of receiving end.