CN105912996A - High precision face identification system - Google Patents
High precision face identification system Download PDFInfo
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- CN105912996A CN105912996A CN201610207462.XA CN201610207462A CN105912996A CN 105912996 A CN105912996 A CN 105912996A CN 201610207462 A CN201610207462 A CN 201610207462A CN 105912996 A CN105912996 A CN 105912996A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/166—Detection; Localisation; Normalisation using acquisition arrangements
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- Oral & Maxillofacial Surgery (AREA)
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- Theoretical Computer Science (AREA)
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Abstract
The invention discloses a high precision face identification system. The high precision face identification system is characterized by mainly comprising a single-chip microcomputer, and a display screen, an A/D conversion module, a power source, a data memory and an alarm device which are all connected with the single-chip microcomputer, an image acquisition device connected with the A/D conversion module, and an image signal reception filtering circuit connected in series between the image acquisition device and the A/D conversion module, wherein the image signal reception filtering circuit comprises a signal reception processing circuit connected with the image acquisition device and a signal filtering circuit connected with an output end of the signal reception processing circuit, and an output end of the signal filtering circuit is connected with the A/D conversion module. Through the face identification system, unwanted wave frequency can be filtered, interference of the unwanted wave frequency on an identification process can be avoided, the identification rate of the face identification system can be adjusted, and accuracy of the face identification system is improved.
Description
Technical field
The present invention relates to the technical field of electronic equipment, specifically refer to a kind of high accuracy face identification system.
Background technology
Along with high-tech flourish, face identification system as human body password because of its convenience by
People are widely used.In addition intelligent management has come into the social life of people, many intelligence now
Change mansion to rise sheer from level ground, adapt to the epoch needs of information, as noble building and working environment, it is necessary to
Functionally meet the demand of current and future development, become the base of culture and economic development.So face is known
Other system is applied in the gate identification system of mansion, but because current face identification system design is deposited
In defect, there will be unavoidably when people are in the identification accepting face identification system and refuse to recognize situation, i.e. cannot know
Do not go out client, or system has carried out wrong identification, causes Migrant women to enter into indoor, brings safety
Hidden danger.How to improve the accuracy of identification of face identification system, be current people institute urgent problem.
Summary of the invention
It is an object of the invention to overcome the highest the brought potential safety hazard of current face identification system accuracy of identification,
A kind of high accuracy face identification system is provided.
The present invention is achieved through the following technical solutions: a kind of high accuracy face identification system, mainly by monolithic
Machine, the display screen being all connected with single-chip microcomputer, A/D modular converter, power supply, data storage and alarm,
The image acquisition device being connected with A/D modular converter, and it is serially connected in image acquisition device and A/D modular converter
Between picture signal receive filter circuit composition；Described picture signal receives filter circuit and is then adopted by with image
The signal receiving processing circuit that storage is connected, and be connected with the outfan of signal receiving processing circuit
Signal filter circuit forms；The outfan of described signal filter circuit is connected with A/D modular converter.
Described signal receiving processing circuit is by audion VT1, field effect transistor MOS, and negative pole is after resistance R5
Be connected with the drain electrode of field effect transistor MOS, polarity that positive pole is connected with the colelctor electrode of audion VT1 electricity
Hold C1, P pole negative pole with polar capacitor C1 after resistance R1 be connected, the base of N pole and audion VT1
The diode D1 that pole is connected, positive pole sequentially after resistance R3 and resistance R2 with the base stage of audion VT1
Be connected, polar capacitor C2, P pole that negative pole is connected with the source electrode of field effect transistor MOS after resistance R7
Be connected with the grid of field effect transistor MOS, N pole emitter stage with audion VT1 after resistance R4 is connected
The diode D2 connect, and negative pole is connected with the N pole of diode D2, positive pole after resistance R6 with field
The polar capacitor C3 composition that the drain electrode of effect pipe MOS is connected；The base stage of described audion VT1 is as letter
The input of number receiving processing circuit is also connected with image acquisition device；The drain electrode of described field effect transistor MOS and
Source electrode is collectively forming the outfan of signal receiving processing circuit.
Described signal filter circuit by audion VT2, P pole after resistance R8 with the leakage of field effect transistor MOS
The diode D3 that pole is connected, N pole is connected with the colelctor electrode of audion VT2, positive pole is through resistance R11
Base stage with audion VT2 is connected afterwards, negative pole source electrode with field effect transistor MOS after resistance R9 is connected
The polar capacitor C4 connect, one end is connected with the negative pole of polar capacitor C4, the other end and audion VT2
The resistance R10 that emitter stage is connected, and negative pole is connected with the base stage of audion VT2, positive pole is through resistance
The polar capacitor C5 composition that after R12, emitter stage with audion VT2 is connected；Described audion VT2's
Emitter stage is as the outfan of signal filter circuit.
For guaranteeing the practical effect of the present invention, described image acquisition device preferentially uses WINCOM501
Type intelligent image harvester realizes；Display screen the most preferentially have employed the liquid crystal with touch-input function
Display screen realizes.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) picture signal of the present invention is provided with signal receiving processing circuit and signal filter in receiving filter circuit
Wave circuit, image acquisition device acquired image signal is carried out anti-interference by signal receiving processing circuit therein
Processing, signal filter circuit then can filter out unwanted ripple frequency in the picture signal after process, it is to avoid
Being disturbed by need not ripple frequency during identification, being improved the accuracy of face identification system.
(2) present invention employs image acquisition device, this image acquisition device has stable performance, highly sensitive,
The advantages such as low price.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of the present invention.
Fig. 2 is the electrical block diagram of the picture signal reception filter circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention do not limit
In this.
As it is shown in figure 1, the present invention is mainly by single-chip microcomputer, the display screen, the A/D that are all connected with single-chip microcomputer turn
Die change block, power supply, data storage and alarm, the image acquisition device being connected with A/D modular converter,
And the picture signal being serially connected between image acquisition device and A/D modular converter receives filter circuit composition.Its
In, described picture signal receives filter circuit as in figure 2 it is shown, it is by the signal being connected with image acquisition device
Receiving processing circuit, and the signal filter circuit composition being connected with the outfan of signal receiving processing circuit.
For guaranteeing the reliability service of the present invention, described A/D modular converter the most preferentially have employed PTR200 type
A/D modular converter realizes；Described single-chip microcomputer preferentially uses the integrated chip of NCP1652, this NCP1652
The HV pin of integrated chip is connected with data storage, and CT pin is connected with display screen, RDE pin
Being connected with the DJ pin of A/D modular converter, ATCH pin is connected with alarm, AC pin and electricity
Source is connected.Described power supply is 12V DC voltage, and this 12V DC voltage is that single-chip microcomputer is powered.
As in figure 2 it is shown, described signal receiving processing circuit is by audion VT1, field effect transistor MOS, electricity
Resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, polar capacitor
C1, polar capacitor C2, polar capacitor C3, diode D1, and diode D2 form.
During connection, the drain electrode with field effect transistor MOS after resistance R5 of the negative pole of polar capacitor C1 is connected,
Positive pole is connected with the colelctor electrode of audion VT1.The P pole of diode D1 after resistance R1 with polar capacitor
The negative pole of C1 is connected, N pole is connected with the base stage of audion VT1.The positive pole of polar capacitor C2 is sequentially
Be connected through resistance R3 base stage with audion VT1 after resistance R2, negative pole is imitated with field after resistance R7
Should the source electrode of pipe MOS be connected.
The P pole of described diode D2 is connected with the grid of field effect transistor MOS, N pole is after resistance R4
It is connected with the emitter stage of audion VT1.The negative pole of polar capacitor C3 is extremely connected with the N of diode D2
Connect, positive pole drain electrode with field effect transistor MOS after resistance R6 is connected.The base stage of described audion VT1
As the input of signal receiving processing circuit and it is connected with image acquisition device；Described field effect transistor MOS
Drain electrode is collectively forming the outfan of signal receiving processing circuit and is connected with signal filter circuit with source electrode.
Further, described signal filter circuit by audion VT2, resistance R8, resistance R9, resistance R10,
Resistance R11, resistance R12, polar capacitor C4, polar capacitor C5, and diode D3 form.
During connection, the drain electrode with field effect transistor MOS after resistance R8 of the P pole of diode D3 is connected,
N pole is connected with the colelctor electrode of audion VT2.The positive pole of polar capacitor C4 after resistance R11 with three poles
The base stage of pipe VT2 is connected, negative pole source electrode with field effect transistor MOS after resistance R9 is connected.Resistance
One end of R10 is connected with the negative pole of polar capacitor C4, the other end is connected with the emitter stage of audion VT2.
The negative pole of polar capacitor C5 is connected with the base stage of audion VT2, positive pole after resistance R12 with audion
The emitter stage of VT2 is connected.The emitter stage of described audion VT2 as signal filter circuit outfan also
It is connected with A/D modular converter.
Operationally, picture signal receives in filter circuit and is provided with signal receiving processing circuit and letter the present invention
Number filter circuit, image acquisition device acquired image signal is resisted by signal receiving processing circuit therein
Interference processes, and signal filter circuit then can filter out unwanted ripple frequency in the picture signal after process,
Being disturbed by need not ripple frequency during avoiding identifying, being improved the accuracy of face identification system.
During operation, it is real that described image acquisition device preferentially uses WINCOM501 type intelligent image harvester
Existing, this image acquisition device is for gathering the picture signal of the face of people.Described picture signal receives filter circuit
In be provided with signal receiving processing circuit and signal filter circuit, wherein image is adopted by signal receiving processing circuit
Storage acquired image signal carries out anti-interference process, and signal filter circuit is then to the image letter after processing
It is transferred to A/D modular converter after number being filtered amplifying.Described A/D modular converter is then by this picture signal
Be converted to viewdata signal and be transferred to single-chip microcomputer.Described single-chip microcomputer is then by this viewdata signal
Image data value is generated, the picture number that this single-chip microcomputer will be stored in image data value and data storage after reason
Compare according to value.If the image data value that image acquisition device the is collected figure that stored interior with memorizer
As data value inconsistent time, described single-chip microcomputer then sends control signal to alarm, and now, alarm leaves
Originate out chimes of doom.Data storage in the present invention preferentially have employed C805IF20 type data storage and comes real
Existing.
Wherein, the display screen of the present invention the most preferentially have employed and has the LCDs of touch-input function in fact
Existing.Described display screen shows for the facial image being gathered image acquisition device.Meanwhile, when needing
When storing new pre-stored image data value, image acquisition device can be controlled by the function key of LCDs
Collection to face picture signal, the picture signal of collection is transferred to single-chip microcomputer by this image acquisition device, and
This picture signal is then converted to viewdata signal by single-chip microcomputer, and single-chip microcomputer is by the view data after conversion simultaneously
Signal is transferred to data storage and stores.
As it has been described above, the present invention just can well be realized.
Claims (5)
1. a high accuracy face identification system, it is characterised in that main by single-chip microcomputer, equal and single-chip microcomputer
Display screen, A/D modular converter, power supply, data storage and the alarm being connected, with A/D modulus of conversion
The image acquisition device that block is connected, and the image letter being serially connected between image acquisition device and A/D modular converter
Number wave reception filtering circuit composition；Described picture signal receives filter circuit then by being connected with image acquisition device
Signal receiving processing circuit, and the signal filter circuit being connected with the outfan of signal receiving processing circuit
Composition；The outfan of described signal filter circuit is connected with A/D modular converter.
A kind of high accuracy face identification system the most according to claim 1, it is characterised in that described
Signal receiving processing circuit by audion VT1, field effect transistor MOS, negative pole after resistance R5 with field effect
The polar capacitor C1, P that the drain electrode of pipe MOS is connected, positive pole is connected with the colelctor electrode of audion VT1
Pole negative pole with polar capacitor C1 after resistance R1 is connected, N pole is connected with the base stage of audion VT1
Diode D1, positive pole is sequentially connected through resistance R3 base stage with audion VT1 after resistance R2,
Polar capacitor C2, P pole that negative pole is connected with the source electrode of field effect transistor MOS after resistance R7 and field effect
Two poles that the grid of pipe MOS is connected, N pole emitter stage with audion VT1 after resistance R4 is connected
Pipe D2, and negative pole is connected with the N pole of diode D2, positive pole after resistance R6 with field effect transistor MOS
Drain electrode be connected polar capacitor C3 composition；The base stage of described audion VT1 processes as signal reception
The input of circuit is also connected with image acquisition device；The drain electrode of described field effect transistor MOS and the common shape of source electrode
Become the outfan of signal receiving processing circuit.
A kind of high accuracy face identification system the most according to claim 2, it is characterised in that described
Signal filter circuit is connected by the drain electrode with field effect transistor MOS after resistance R8 of audion VT2, P pole,
The diode D3 that N pole is connected with the colelctor electrode of audion VT2, positive pole after resistance R11 with audion
The polarity electricity that the base stage of VT2 is connected, negative pole is connected with the source electrode of field effect transistor MOS after resistance R9
Holding C4, one end is connected with the negative pole of polar capacitor C4, the other end is connected with the emitter stage of audion VT2
The resistance R10 connect, and negative pole is connected with the base stage of audion VT2, positive pole after resistance R12 with three
The polar capacitor C5 composition that the emitter stage of pole pipe VT2 is connected；The emitter stage conduct of described audion VT2
The outfan of signal filter circuit.
A kind of high accuracy face identification system the most according to claim 3, it is characterised in that described
Image acquisition device be WINCOM501 type intelligent image harvester.
A kind of high accuracy face identification system the most according to claim 4, it is characterised in that described
Display screen have employed the LCDs with touch-input function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610207462.XA CN105912996A (en) | 2016-04-01 | 2016-04-01 | High precision face identification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610207462.XA CN105912996A (en) | 2016-04-01 | 2016-04-01 | High precision face identification system |
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| Publication Number | Publication Date |
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| CN105912996A true CN105912996A (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610207462.XA Pending CN105912996A (en) | 2016-04-01 | 2016-04-01 | High precision face identification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068171A (en) * | 2017-03-24 | 2017-08-18 | 成都云材智慧数据科技有限公司 | A kind of electromagnetism interference type data storage system |
-
2016
- 2016-04-01 CN CN201610207462.XA patent/CN105912996A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068171A (en) * | 2017-03-24 | 2017-08-18 | 成都云材智慧数据科技有限公司 | A kind of electromagnetism interference type data storage system |
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Application publication date: 20160831 |
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| WD01 | Invention patent application deemed withdrawn after publication |