CN104102901A - High-precision fingerprint identification system - Google Patents
High-precision fingerprint identification system Download PDFInfo
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- CN104102901A CN104102901A CN201410313827.8A CN201410313827A CN104102901A CN 104102901 A CN104102901 A CN 104102901A CN 201410313827 A CN201410313827 A CN 201410313827A CN 104102901 A CN104102901 A CN 104102901A
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Abstract
The invention discloses a fingerprint identification device, which mainly consists of a fingerprint collector provided with a Camera communication interface and a USB (Universal Serial Bus) communication interface. The fingerprint identification device is characterized in that a high-precision identification processing system is arranged in the fingerprint collector and consists of a MCU (Micro Controller Unit) and at least one fingerprint scanning circuit connected with the MCU. The invention is very simple in integral structure and is very convenient in manufacturing and using, multiple users can be subjected to fingerprint identification in the same time, and therefore, the invention has powerful functions and can obviously improve identification processing efficiency.
Description
Technical field
The present invention relates to a kind of applying electronic circuit recognition system, specifically refer to a kind of high precision fingerprint recognition system.
Background technology
At present, existing single fingerprint identification device generally all adopts a fingerprint capturer to realize, not only its gather, differentiate fingerprint and management function more single, and its recognition efficiency is low, only can carry out to a user comparison mode of 1:1 or 1:N at one time.Meanwhile, these single fingerprint identification device accuracy of identification are lower at present, once have dust or water stain on finger, just often there will be situation about can not identify continuously.Therefore, how effectively overcoming the low and not high defect of precision of function singleness, recognition efficiency that existing fingerprint recognition system exists, is people's the task of top priority.
Summary of the invention
The object of the invention is to overcome the low and not high defect of precision of current single fingerprint identification device function singleness, recognition efficiency, provide a kind of simple in structure, can significantly improve the high precision fingerprint recognition system of recognition efficiency and precision.
The present invention is achieved through the following technical solutions: a kind of fingerprint identification device, mainly formed by the fingerprint capturer that is provided with Camera communication interface and USB communication interface, be provided with high precision identification processing system in this fingerprint capturer inside, and this high precision identification processing system is by single-chip microprocessor MCU, and the quantity being connected with this single-chip microprocessor MCU is more than one finger scan the electric circuit constitute.
Further, described finger scan circuit is by fingerprint driving circuit, the LED lamp being connected with this fingerprint driving circuit, the image acquisition units being connected with this fingerprint driving circuit, and the imaging lens being connected with this image acquisition units composition.
Described fingerprint driving circuit is by driving chip HV, base stage is connected with the GATE pin that drives chip HV, collector is connected with the CS pin that drives chip HV after the coil L1 on the former limit of transformer T1 emitter successively through resistance R 2 after resistance R 3 with the triode VT1 that drives the CS pin of chip HV to be connected, and two secondary link I that backup each other and be connected with LED lamp respectively and secondary link II composition.
The described secondary link I diode D1 that the P utmost point is connected with the non-same polarity of secondary coil L2 after resistance R 4 that is connected with the Same Name of Ends of the secondary coil L2 of transformer T1 by the N utmost point, and form with the capacitor C 1 that resistance R 4 is in parallel, and the two ends of this capacitor C 1 are connected with the both positive and negative polarity of LED lamp respectively.
The described secondary link II diode D2 that the P utmost point is connected with the non-same polarity of secondary coil L3 after resistance R 5 that is connected with the Same Name of Ends of the secondary coil L3 of transformer T1 by the N utmost point, and form with the capacitor C 2 that resistance R 5 is in parallel, and the two ends of this capacitor C 2 are connected with the both positive and negative polarity of LED lamp respectively.
In order to ensure result of use, fingerprint capturer of the present invention is irregular prismatoid, and is provided with at the upper surface of this prismatoid the inclined-plane that gathers fingerprint, and described imaging lens and image acquisition units are arranged on the bottom of prismatoid.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) not only one-piece construction is very simple in the present invention, and it is made and be very easy to use, and it interiorly at one time can also carry out fingerprint recognition to multiple users, and therefore its function is very powerful, can improve significantly knowledge treatment effeciency.
(2) the present invention adopts high precision identification processing system to be used as processing core, can increase exponentially fingerprint recognition efficiency, reliability and security, and is easier to expand the beneficial effect of fingerprint identification device function.
(3) the present invention adopts high precision identification processing system to be used as processing core, can thoroughly overcome the existing defect when having dust on fingerprint or can not identifying when water stain of conventional fingerprint recognizer.
Brief description of the drawings
Fig. 1 is the electrical block diagram of finger scan circuit of the present invention.
Fig. 2 is the integrated circuit structural representation of the present invention while having two finger scan circuit.
Fig. 3 is the integrated circuit structural representation of the present invention while having three finger scan circuit.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figures 1 to 3, fingerprint identification device of the present invention is by the fingerprint capturer with Camera communication interface and USB communication interface, and is arranged on the high precision identification processing system composition of this fingerprint capturer inside.Wherein, this high precision identification processing system is by single-chip microprocessor MCU, and the quantity being connected with this single-chip microprocessor MCU is more than one finger scan the electric circuit constitute.In the time that the quantity of finger scan circuit is 2, as shown in Figure 2, in the time that the quantity of finger scan circuit is N, its structure as shown in Figure 3 for its structure.
As shown in Figure 1, it is by fingerprint driving circuit for the structure of this finger scan circuit, the LED lamp being connected with this fingerprint driving circuit, the image acquisition units being connected with this fingerprint driving circuit, and the imaging lens being connected with this image acquisition units composition.
Described fingerprint driving circuit includes and drives chip HV, transformer T1, triode VT1 and mutually redundant secondary link I and secondary link II.When connection, the base stage of triode VT1 is connected with the GATE pin that drives chip HV, and its collector is connected with the CS pin that drives chip HV after the coil L1 on the former limit of transformer T1, and emitter is connected with the CS pin that drives chip HV after resistance R 3 through resistance R 2 successively.
Secondary link I and secondary link II are two mutually redundant links, and, in the time that wherein any one secondary link breaks down, native system can be guaranteed the normal use of LED lamp.Wherein, the secondary link I diode D1 that the P utmost point is connected with the non-same polarity of secondary coil L2 after resistance R 4 that is connected with the Same Name of Ends of the secondary coil L2 of transformer T1 by the N utmost point, and form with the capacitor C 1 that resistance R 4 is in parallel.This capacitor C 1 is as energy storage device, and its two ends are connected with the both positive and negative polarity of LED lamp respectively, so that provide electric energy for LED lamp.
The described secondary link II diode D2 that the P utmost point is connected with the non-same polarity of secondary coil L3 after resistance R 5 that is connected with the Same Name of Ends of the secondary coil L3 of transformer T1 by the N utmost point, and form with the capacitor C 2 that resistance R 5 is in parallel.In like manner, the two ends of this capacitor C 2 are connected with the both positive and negative polarity of LED lamp respectively.
Attractive in appearance and practical in order to ensure native system fingerprint capturer, fingerprint capturer of the present invention is preferentially made into irregular prismatoid, and be provided with the inclined-plane that gathers fingerprint at the upper surface of this prismatoid, described imaging lens and image acquisition units are arranged on the bottom of prismatoid.
Image acquisition units and imaging lens are current proven technique, and the present invention is organically used in conjunction with itself and fingerprint driving circuit, to guarantee overcoming the existing function singleness of conventional fingerprint recognizer, recognition efficiency lowly and the not high defect of precision by brand-new fingerprint driving circuit.
As mentioned above, just can realize preferably the present invention.
Claims (4)
1. a fingerprint identification device, mainly formed by the fingerprint capturer that is provided with Camera communication interface and USB communication interface, it is characterized in that, be provided with high precision identification processing system in this fingerprint capturer inside, and this high precision identification processing system is by single-chip microprocessor MCU, and the quantity being connected with this single-chip microprocessor MCU is more than one finger scan the electric circuit constitute.
2. a kind of fingerprint identification device according to claim 1, it is characterized in that, described finger scan circuit is by fingerprint driving circuit, the LED lamp being connected with this fingerprint driving circuit, the image acquisition units being connected with this fingerprint driving circuit, and the imaging lens being connected with this image acquisition units composition.
3. a kind of fingerprint identification device according to claim 2, it is characterized in that, described fingerprint driving circuit is by driving chip HV, base stage is connected with the GATE pin that drives chip HV, collector is connected with the CS pin that drives chip HV after the coil L1 on the former limit of transformer T1 emitter successively through resistance R 2 after resistance R 3 with the triode VT1 that drives the CS pin of chip HV to be connected, and two secondary link I that backup each other and be connected with LED lamp respectively and secondary link II composition;
The described secondary link I diode D1 that the P utmost point is connected with the non-same polarity of secondary coil L2 after resistance R 4 that is connected with the Same Name of Ends of the secondary coil L2 of transformer T1 by the N utmost point, and form with the capacitor C 1 that resistance R 4 is in parallel, and the two ends of this capacitor C 1 are connected with the both positive and negative polarity of LED lamp respectively;
The described secondary link II diode D2 that the P utmost point is connected with the non-same polarity of secondary coil L3 after resistance R 5 that is connected with the Same Name of Ends of the secondary coil L3 of transformer T1 by the N utmost point, and form with the capacitor C 2 that resistance R 5 is in parallel, and the two ends of this capacitor C 2 are connected with the both positive and negative polarity of LED lamp respectively.
4. according to a kind of fingerprint identification device described in claim 1~3 any one, it is characterized in that, described fingerprint capturer is irregular prismatoid, and is provided with at the upper surface of this prismatoid the inclined-plane that gathers fingerprint, and described imaging lens and image acquisition units are arranged on the bottom of prismatoid.
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CN201410313827.8A CN104102901B (en) | 2014-07-03 | 2014-07-03 | High-precision fingerprint identification system |
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CN201410313827.8A CN104102901B (en) | 2014-07-03 | 2014-07-03 | High-precision fingerprint identification system |
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CN104102901B CN104102901B (en) | 2017-04-26 |
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CN104899552A (en) * | 2015-04-29 | 2015-09-09 | 宁波摩米创新工场电子科技有限公司 | Fingerprint recognition system based on saturation type triggering circuit |
CN110632470A (en) * | 2019-09-19 | 2019-12-31 | 国网天津市电力公司电力科学研究院 | High-voltage test transformer with fingerprint identification function |
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CN104899552A (en) * | 2015-04-29 | 2015-09-09 | 宁波摩米创新工场电子科技有限公司 | Fingerprint recognition system based on saturation type triggering circuit |
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Effective date of registration: 20201221 Address after: 224000 north of Century Avenue and east of Zhenxing Road, West District, Yandu District, Yancheng City, Jiangsu Province (d) Patentee after: Yancheng Yangao Affordable Housing Construction Co.,Ltd. Address before: Room 505 and 510, No. 298, bachelor Road, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: NINGBO MOMI INNOVATION WORKS ELECTRONIC TECHNOLOGY Co.,Ltd. |