CN104392230A - Card-plugging type certificate recognition device and recognition method for self-service custom clearance - Google Patents
Card-plugging type certificate recognition device and recognition method for self-service custom clearance Download PDFInfo
- Publication number
- CN104392230A CN104392230A CN201410621241.8A CN201410621241A CN104392230A CN 104392230 A CN104392230 A CN 104392230A CN 201410621241 A CN201410621241 A CN 201410621241A CN 104392230 A CN104392230 A CN 104392230A
- Authority
- CN
- China
- Prior art keywords
- card
- triode
- voltage
- infrared
- voltage comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims description 28
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000009514 concussion Effects 0.000 claims description 11
- 230000001276 controlling effect Effects 0.000 claims description 4
- 208000002925 dental caries Diseases 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Closed-Circuit Television Systems (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a card-plugging type certificate recognition device and recognition method for self-service custom clearance. The method includes the following steps that: a card to be recognized is plugged into a card plugging opening; an infrared reflection detection circuit detects changes of reflective infrared to judge and distinguish the in-place plugging of the card; two cameras are controlled to shoot and obtain a picture; and the serial number of the obtained picture is recognized through a background computer, and the background computer calls out corresponding passenger information and performs comparison automatically. According to the card-plugging type certificate recognition device and recognition method for self-service custom clearance, two cameras are adopted, and therefore, one camera can always shoot pictures containing card numbers, wherein the card of which the surfaces can face any directions, can be plugged in the card plugging opening at any directions, and therefore, a defect which is caused by a situation in which a certificate of which the surfaces are needed to face specified directions is needed to be put at a prescribed area with a specified direction so as to be recognized can be eliminated, and custom clearance efficiency can be greatly improved; and infrared light reflection amount detection is adopted to determine the in-place plugging of the card and control the two cameras, and with the infrared reflection detection mode is adopted, it only needs to install a circuit board at one position, and therefore, installation can be facilitated.
Description
technical field
The present invention relates to certificate recognition technology field, particularly relate to a kind of self-service clearance card insert type certificate recognition device and recognition methods thereof.
Background technology
Current certificate recognition device is the picture adopting the mode taken pictures or scan to obtain certificate, then carries out information extraction, compares peer processes; Clearance certificate to have in passport, Hongkong and Macro's pass, Hongkong and Macro resident dealing the pass be commonly called as: home return permit, and Hongkong and Macro's pass is divided into the similar passport of old card papery, the new similar China second-generation identity card of card chip, built-in radio frequency chip, home return permit is all the same China second-generation identity card of card form size, is also divided into old card without radio frequency chip and the built-in radio frequency chip of new card;
Traditional certificate recognition device is when obtaining certificate picture, certificate must be placed in the fixed position of image capture block window, to extract information accurately, for adapting to the identification of various certificate, the image capture block of traditional certificate recognition device is all the size according to full-size design and passport and the old card of Hongkong and Macro's pass) like this home return permit and Hongkong and Macro's pass are newly demonstrate,proved to the certificate of these 3 kinds of card forms, because size is much smaller than Image Acquisition window and front and back relevant information, just must identifying towards region certificate being put in advance regulation according to the direction of regulation and face, this requirement can be accomplished well-trained staff, but the passenger for self-service clearance is difficult to accomplish, so greatly affect customs clearance efficiency, lose the meaning of self-service clearance.
Traditional certificate recognition device is when obtaining certificate picture, when certificate is inserted into position, carry out gated sweep by blocking infrared light generation signal or take pictures, namely the mode that correlation detects is adopted, this mode need install wiring board two positions, one place is infrared emission plate, and a place is infrared receiver plate and judging circuit, just cumbersome for installation like this; And traditional certificate recognition device adopts the illumination of multiple LED, do not adopt light diverting device, the LED number not only needed many (generally needing more than 10), power consumption is large, and distribution of light is uneven.
Comprehensive foregoing description, traditional certificate recognition device cannot meet the demand in market.
Summary of the invention
For the weak point existed in above-mentioned technology, the invention provides and a kind of convenient, simple to operate and that customs clearance efficiency is high self-service clearance card insert type certificate recognition device and recognition methods thereof are installed.
For achieving the above object, the invention provides a kind of self-service clearance card insert type certificate recognition device, comprise recognition device body, the center of described recognition device body is provided with card inserting mouth, and the inside of described recognition device body encloses the cavity communicated with card inserting mouth;
Card inserts this cavity after in this card inserting mouth and is separated into two cavitys, position relative with card inserting mouth on each cavity is all provided with camera, two cameras are symmetric along card inserting mouth, adopt this two cameras, make card with any one direction or face towards in insertion card inserting mouth, all have one of them camera can photograph required clearance information;
Two offsides of each cavity are all provided with symmetrical and for carrying out light filling to camera light diverting device;
Also be installed on the detection of employing infrared light reflection amount in described cavity and determine whether card is inserted into position and controls the infrared external reflection testing circuit of two cameras thus; Described infrared external reflection testing circuit is electrically connected with two cameras respectively;
When obtaining certificate picture, in card inserts, detecting output level by infrared external reflection testing circuit differentiate whether card is inserted into position, if output low level, controlling two cameras and take pictures;
The photo that shooting obtains by the Intelligent Recognition of background computer, and obtains the accurate numbering of card.
Wherein, described infrared external reflection testing circuit comprises infrared receiving/transmission and judgement unit, camera take control module and state indication unit; According to the volume reflection of infrared light, described infrared receiving/transmission and judgement unit differentiate whether card is inserted into position, if volume reflection is few, then card does not insert, if volume reflection is large, then card inserts, if when the volume reflection of infrared light reaches maximum, card is inserted into position; Whether described infrared receiving/transmission and judgement unit take control module with camera and state indication unit is electrically connected, whether show this card insert and put in place by the flicker of LED light.
Wherein, described infrared receiving/transmission and judgement unit comprise infrared transmitting tube, infrared receiving tube, voltage comparator, the first regulating resistance and the second regulating resistance; Described infrared transmitting tube is connected with infrared receiving tube light, the two ends of described infrared receiving tube connect the first triode and first regulating resistance of series connection, and the voltage that the common port that described first triode and the first regulating resistance are formed is connected to voltage comparator by the first resistance inputs negative pole end, the voltage input positive terminal of described voltage comparator connects the second regulating resistance; The different voltages exported by the output terminal of voltage comparator judge that card is inserted into position or has been inserted into position.
Wherein, described camera shooting control module comprises the second triode be connected with the output terminal of voltage comparator by the second resistance, and one end of described second resistance connects the 3rd resistance, the other end of described second resistance connects the base stage of the first electric capacity and the second triode, the grounded emitter of described second triode, the collector of described second triode connects the 4th resistance and forms ALAM end between the two and connect the first socket; If card does not insert or is not inserted into position, the output terminal output low level of voltage comparator, reverse through the second triode, ALAM end is high level; If when card is inserted into, the output terminal of voltage comparator exports high level, reverse through the second triode, and ALAM end is low level, and now the low level signal of ALAM end just controls camera and takes pictures and export photo.
Wherein, described state indication unit comprises concussion chip, the 3rd triode and the second socket; The output terminal of described voltage comparator connects the 3rd triode by the 5th resistance, and the emitter of the 3rd triode connects LED light and concussion chip respectively; When card is not inserted into, the output terminal output low level of voltage comparator, the 3rd triode cut-off, LED light does not work; When card is inserted into, the output terminal of voltage comparator exports high level, 3rd triode ON, concussion chip plays shake, LED light does not stop flicker, and card is now inserted into the end and is photographed identification, introduces extraneous on-off model by the second socket be connected with the common port that the 9th resistance and the tenth resistance are formed, this switching value closes interval scale certificate and is identified and passes through, and this closure signal can make the LED light of glimmering extinguish.
For achieving the above object, the invention provides a kind of recognition methods of self-service clearance card insert type certificate, comprise the following steps:
Step 1, is inserted in card inserting mouth by needing the card identified;
Step 2, the change of infrared external reflection testing circuit detection of reflected infrared light differentiates that card is inserted into position;
Step 3, infrared external reflection testing circuit output low level, controls two camera shootings simultaneously and obtains picture;
Step 4, the picture of acquisition identifies its numbering by background computer and recalls corresponding passenger's data by it and carries out automatic comparison;
Step 5, comparison success, passenger's clearance.
Wherein, the concrete steps of described step 2 are as follows:
Step 21, infrared receiving tube receives amount of infrared light and On current;
Step 22, electric current amplifies through the first triode, and the electric current that the collector of the first triode is formed is through the first regulating resistance and form pressure drop on the first regulating resistance;
Step 23, pressure drop coating-forming voltage on the voltage input negative pole end of voltage comparator of the first regulating resistance; And the output terminal of voltage comparator exports high level;
Step 24, the second triode saturation conduction, and the current collection of the second triode is very low, namely ALAM end then enters step 3 for low level.
Wherein, the concrete steps of described step 23 are: pressure drop coating-forming voltage on the voltage input negative pole end of voltage comparator of the first regulating resistance; The voltage that the voltage input negative pole end of voltage comparator and voltage input positive terminal compares, if the voltage of voltage input negative pole end is less than the voltage of voltage input positive terminal, then the output terminal of voltage comparator exports high level and enters step 24; If voltage input negative pole end voltage be greater than voltage input positive terminal voltage, then voltage comparator output terminal output low level and enter step 25.
Wherein, described step 25 is: the second triode by, and the current collection of the second triode is very high, and namely ALAM end is high level, and this high level signal does not then control two cameras shootings and obtains pictures and redirect is step 1.
Wherein, in described step 1 card can any one direction or face towards in insertion card inserting mouth.
Compared with prior art, self-service clearance card insert type certificate recognition device provided by the invention and recognition methods thereof, have following beneficial effect:
1) mode that two camera symmetries are installed is adopted, can guarantee card no matter with what direction, what face towards insertion card inserting mouth, always there is a camera can photograph the picture of numbering containing card, change the direction of tradition needs according to regulation and the defect just carrying out identifying towards region certificate being put into regulation in advance in face, substantially increase customs clearance efficiency;
2) adopt infrared light reflection amount to detect and determine whether card puts in place and control two cameras thus, the mode that this infrared external reflection detects only need install wiring board a position, facilitates installation;
3) adopt symmetrical light diverting device light filling, distribution of light evenly and power saving, and can obtain high-quality picture;
4) adopt LED light display card to insert and status recognition, passenger can be made to know current state, that is: whether whether whether card insert and put in place namely in identification, be identified and pass through, facilitate self-service clearance;
5) design adopting infrared external reflection testing circuit to be separated with interface circuit, facilitates circuit board to install, debugs;
6) the present invention have reasonable in design, convenient, simple to operate, the feature such as customs clearance efficiency is high, labour intensity is low and cost of labor is low is installed.
Accompanying drawing explanation
Fig. 1 is the structural drawing of self-service clearance card insert type certificate recognition device of the present invention;
Fig. 2 is three-dimensional structure diagram of the present invention;
Fig. 3 is the fundamental diagram of infrared receiving/transmission and judgement unit in the present invention;
Fig. 4 is the fundamental diagram of camera shooting control module in the present invention;
Fig. 5 is the fundamental diagram of state indication unit in the present invention;
Fig. 6 is the flow chart of steps of the recognition methods of self-service clearance card insert type certificate in the present invention.
Main element symbol description is as follows:
10, recognition device body 11, camera
12, card 13, infrared external reflection testing circuit
14, light diverting device 15, interface board
101, card inserting mouth 131, infrared receiving/transmission and judgement unit
132, camera shooting control module 133, state indication unit.
Embodiment
In order to more clearly state the present invention, below in conjunction with accompanying drawing, the present invention is further described.
Refer to Fig. 1, self-service clearance card insert type certificate recognition device of the present invention, comprise recognition device body 10, the center of recognition device body 10 is provided with card inserting mouth 101, and the inside of recognition device body 10 encloses the cavity communicated with card inserting mouth 101;
Card 12 inserts this cavity after in this card inserting mouth 101 and is separated into two cavitys, position relative with card inserting mouth 101 on each cavity is all provided with camera 11, two cameras 11 are symmetric along card inserting mouth 101, adopt this two cameras 11, make card 12 with any one direction or face towards in insertion card inserting mouth 101, all have one of them camera 11 can photograph required clearance information;
Two offsides of each cavity are all provided with symmetrical and for carrying out light filling to camera light source light diverting device 14; This light diverting device 14 is whole LED-backlit source plate;
Also be installed in cavity and adopt the detection of infrared light reflection amount to determine whether card puts in place and control the infrared external reflection testing circuit 13 of two cameras 11 thus; Infrared external reflection testing circuit 13 is electrically connected with two cameras 11 respectively;
When obtaining certificate picture, in card 12 inserts, detecting output level by infrared external reflection testing circuit 13 differentiate whether card is inserted into position, if output low level, controlling two cameras 11 and take pictures;
The photo that shooting obtains by the Intelligent Recognition of background computer, and obtains the accurate numbering of card.
Please consult Fig. 2-4 further, infrared external reflection testing circuit 13 comprises infrared receiving/transmission and judgement unit 131, camera take control module 132 and state indication unit 133; According to the volume reflection of infrared light, infrared receiving/transmission and judgement unit 131 differentiate whether card 12 is inserted into position, if volume reflection is few, then card 12 is not inserted into position, if volume reflection is large, then card 12 inserts, if when the volume reflection of infrared light reaches maximum, card 12 is inserted into the end; Whether infrared receiving/transmission and judgement unit 131 take control module 132 with camera and state indication unit 133 is electrically connected, whether show this card 12 be identified and pass through by the flicker of LED light L.
Refer to Fig. 2, infrared receiving/transmission and judgement unit 131 comprise infrared transmitting tube TX, infrared receiving tube RX, voltage comparator U1, the first regulating resistance Ra and the second regulating resistance Rb; Infrared transmitting tube TX is connected with infrared receiving tube RX light, the two ends of infrared receiving tube RX connect the first triode Q1 and the first regulating resistance Ra of series connection, and the voltage that the common port that the first triode Q1 and the first regulating resistance Ra is formed is connected to voltage comparator U1 by the first resistance inputs negative pole end IN-, the voltage input positive terminal IN+ of voltage comparator U1 connects the second regulating resistance Rb; The different voltages exported by the output terminal OUTA of voltage comparator U1 are judged that card 12 does not insert to put in place or inserted and put in place.Camera shooting control module 132 comprises the second triode Q2 be connected with the output terminal OUTA of voltage comparator U1 by the second resistance R2, and one end of the second resistance R2 connects the 3rd resistance R3, the other end of the second resistance R2 connects the base stage of the first electric capacity C1 and the second triode Q2, the grounded emitter of the second triode Q2, the collector of the second triode Q2 connects the 4th resistance R4 and forms ALAM end between the two and connect the first socket; If card 12 does not insert or does not insert and puts in place, the output terminal OUTA output low level of voltage comparator U1, reverse through the second triode Q2, ALAM end is high level; If when card 12 insertion puts in place, the output terminal OUTA of voltage comparator U1 exports high level, reverse through the second triode Q2, and ALAM end is low level, and the low level signal that now ALAM holds just controls camera 11 and takes pictures and export photo.State indication unit 133 comprises concussion chip U2, the 3rd triode Q3 and the second socket; The output terminal OUTA of voltage comparator U1 connects the 3rd triode Q3 by the 5th resistance R5, and the emitter of the 3rd triode Q3 connects LED light L and concussion chip U2 respectively; The first pin ground connection of concussion chip U2,5th pin is by the 3rd electric capacity C3 ground connection, 6th pin is by the second electric capacity C2 ground connection, 3rd pin by series connection the 11 resistance R11 and the 4th triode Q4 after ground connection, be connected the 12 resistance R12 between second pin with the 7th pin, the 4th pin is connected the 7th resistance R7 with the 8th pin; Be connected with the 8th resistance R8 between 3rd triode Q3 and LED light L, and connect the 9th resistance R9 and the tenth resistance R10 between the two ends of LED light L.When card 12 do not insert put in place time, the output terminal OUTA output low level of voltage comparator U1, the 3rd triode Q3 ends, and LED light L does not work; When card 12 insertion puts in place, the output terminal OUTA of voltage comparator U1 exports high level, 3rd triode Q3 conducting, concussion chip U2 plays shake, LED light L does not stop flicker, and card 12 is now inserted into the end and is photographed, and introduces extraneous on-off model by the second socket be connected with the common port that the 9th resistance R9 and the tenth resistance R10 are formed, this switching value closes interval scale certificate and is identified and passes through, and this closure signal can make the LED light L glimmered extinguish.Whether whether adopt LED light L to point out the insert state of card 12, whether card 12 is inserted into position to facilitate user to know, in identification, be identified by.
The principle of work of infrared external reflection testing circuit is as follows: the infrared receiving/transmission principle and the light reflection principle that adopt infrared transmitting tube TX, infrared receiving tube RX; After circuit normally works, when card does not insert (volume reflection is few), IN-terminal voltage is Va, when card insertion puts (volume reflection is maximum) in place, IN-terminal voltage is Vb, first regulating resistance Ra parameter makes Va-Vb> 2V, regulate the second regulating resistance Rb to make IN+ terminal voltage V+, meet Va>V+>Vb; So the output terminal OUTA of voltage comparator U1 will put and insert the two kinds of situations that put in place in place and export different voltage because card 12 does not insert: when card 12 does not insert and puts (volume reflection is few) in place: the output terminal OUTA output low level of voltage comparator U1, reverse through the second triode Q2, ALAM end is high level; When card 12 inserts and puts (volume reflection is maximum) in place: the output terminal OUTA of voltage comparator U1 exports high level, reverse through the second triode Q2, ALAM end is low level; ALAM end signal is exactly the signal controlling video camera pictures taken; Low level can make video camera take pictures, and exports a photo.During installation, infrared transmitting tube TX, infrared receiving tube RX is concordant with hacking the position being inserted into bottom, such card is inserted into the maximum reflection that the end could form infrared light, to guarantee to detect accurately; When card 12 do not insert put (volume reflection is few) in place time: the output terminal OUTA output low level of voltage comparator U1, the 3rd triode Q3 ends, and LED light L does not work; When card 12 inserts and puts (volume reflection is maximum) in place, the output terminal OUTA of voltage comparator U1 exports high level, 3rd triode Q3 conducting, concussion chip U2 plays shake, LED light L glimmers, and show that card 12 is now inserted into the end and is photographed identification, extraneous on-off model introduced by socket, this switching value closes interval scale certificate and is identified and passes through, and this closure signal can make the LED light L lamp glimmered extinguish; User can be made like this to see that just knowing that certificate is identified after LED light L extinguishes passes through.
In addition, be illustrated as below what no matter card 12 with what face, what direction towards insertion card inserting mouth 101, always there is a camera 11 can photograph the picture of numbering containing card, two cameras can be labeled as A and B respectively: if the card inserted inserts for axle revolves turnback with the axis of direction of insertion (Z axis) again, and the picture that so picture that photographed of A camera and B camera photographed exchanges (because of two video cameras with plug-in card rotational symmetry; If the card inserted inserts for axle revolves turnback (or perhaps card inserts after it inserts Plane Rotation 180 degree again) with the vertical axis of card (X-axis) again, the picture of what so video camera photographed is card (direction of insertion turns upside down) reversed left to right, video camera only photographed the photo of insertion portion, i.e. the photo of 70% left-right parts of certificate; Such card inserts Plane Rotation 180 degree at it and inserts, and what video camera photographed is photo a greater part of in addition; For the old card of home return permit, the numbering on it always appears at the right half part of front or reverse side, if just facing video camera A, inserts down with the left side, then video camera A claps the numbering less than front, but video camera B can photograph the numbering at the back side; If inserted down with the right, then video camera A can photograph the numbering in front, but video camera B claps the numbering less than the back side; If just facing video camera B, being equivalent to video camera A and B and exchanging, is also always have a function of making a video recording to photograph the numbering of card;
Newly demonstrate,prove for home return permit, the numbering on it always appears at the left-half of front or reverse side, if just facing video camera A, inserts down with the left side, then video camera A can photograph the numbering in front, but video camera B claps the numbering less than the back side; If inserted down with the right, then video camera A claps the numbering less than front, but video camera B can photograph the numbering at the back side; If just facing video camera B, being equivalent to video camera A and B and exchanging, is also always have a function of making a video recording to photograph the numbering of card; Newly demonstrate,prove for Hongkong and Macro's pass, its left-half in front of numbering and right half part have, no matter insert down with the left side or the right down, always have a function of making a video recording to photograph this and number.
A kind of self-service clearance card insert type certificate recognition device provided by the invention, has following beneficial effect:
1) mode that two camera symmetries are installed is adopted, can guarantee card no matter with what direction, what face towards insertion card inserting mouth, always there is a camera can photograph the picture of numbering containing card, change the direction of tradition needs according to regulation and the defect just carrying out identifying towards region certificate being put into regulation in advance in face, substantially increase customs clearance efficiency;
2) adopt infrared light reflection amount to detect and determine whether card puts in place and control two cameras thus, the mode that this infrared external reflection detects only need install wiring board a position, facilitates installation;
3) adopt symmetrical light diverting device light filling, distribution of light evenly and power saving, and can obtain high-quality picture;
4) adopt LED light display card to insert and status recognition, passenger can be made to know current state, facilitate self-service clearance;
5) design adopting infrared external reflection testing circuit to be separated with interface circuit, facilitates circuit board to install, debugs;
6) the present invention have reasonable in design, convenient, simple to operate, the feature such as customs clearance efficiency is high, labour intensity is low and cost of labor is low is installed.
Please consult the infrared external reflection testing circuit in Fig. 5 and Fig. 2-4 further, the recognition methods of self-service clearance card insert type certificate provided by the invention, comprises the following steps:
Step S1, is inserted in card inserting mouth by needing the card identified; In this step card can any one direction or face towards in insertion card inserting mouth.
Step S2, the change of infrared external reflection testing circuit detection of reflected infrared light differentiates that card is inserted into position; The concrete steps of this step are:
Step S21, infrared receiving tube receives amount of infrared light and On current; Amount of infrared light is larger, and electric current is larger;
Step S22, electric current amplifies through the one or three pole Q1 pipe, and the electric current that the collector of the first triode Q1 is formed is through the first regulating resistance Ra and form pressure drop on the first regulating resistance Ra; Electric current is larger, and pressure drop is larger;
Pressure drop coating-forming voltage on the voltage input negative pole end IN-of voltage comparator U1 of step S23, the first regulating resistance Ra; The voltage that the voltage input negative pole end IN-of voltage comparator U1 and voltage input positive terminal IN+ compares; If the voltage of voltage input negative pole end IN-is less than the voltage of voltage input positive terminal IN+, then the output terminal OUTA of voltage comparator U1 exports high level and enters step S24; If the voltage of voltage input negative pole end IN-is greater than the voltage of voltage input positive terminal IN+, then voltage comparator U1 output terminal output low level and enter step S25; Pressure drop is larger, and the voltage of voltage input negative pole end IN-is lower; If the output terminal of voltage comparator U1 exports high level, represent the light quantity that infrared receiving tube receives and be greater than default threshold values, namely reflected light exceedes default threshold values; If the output terminal output low level of voltage comparator U1, represent the light quantity that infrared receiving tube receives and be less than default threshold values, namely reflected light does not exceed default threshold values;
Step S24, the second triode Q2 saturation conduction, and the current collection of the second triode Q2 is very low, namely ALAM end then enters step 3 for low level;
Step S25, the second triode Q2 by, and the current collection of the second triode Q2 is very high, and namely ALAM end is high level, and this high level signal does not then control two camera heads shootings and obtains pictures and redirect is step S1 is continued to insert by card again;
Step S3, infrared external reflection testing circuit output low level, controls two camera head shootings simultaneously and obtains picture;
Step S4, the picture of acquisition is delivered to background computer by interface board 15 and is identified its numbering and recall corresponding passenger's data by it and carry out automatic comparison;
Step S5, comparison success, passenger's clearance.
Method provided by the invention, has following advantage:
1) mode that two camera symmetries are installed is adopted, can guarantee card no matter with what direction, what face towards insertion card inserting mouth, always there is a camera can photograph the picture of numbering containing card, change the direction of tradition needs according to regulation and the defect just carrying out identifying towards region certificate being put into regulation in advance in face, substantially increase customs clearance efficiency;
2) adopt infrared light reflection amount to detect and determine whether card puts in place and control two cameras thus, the mode that this infrared external reflection detects only need install wiring board a position, facilitates installation;
3) adopt symmetrical light diverting device light filling, distribution of light evenly and power saving, and can obtain high-quality picture;
4) adopt LED light display card to insert and status recognition, whether whether passenger can be made to know current state, that is: whether card inserts and puts in place, in identification, be identified and pass through, facilitate self-service clearance;
5) design adopting infrared external reflection testing circuit to be separated with interface circuit, facilitates circuit board to install, debugs.
Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (10)
1. a self-service clearance card insert type certificate recognition device, is characterized in that, comprise recognition device body, and the center of described recognition device body is provided with card inserting mouth, and the inside of described recognition device body encloses the cavity communicated with card inserting mouth;
Card inserts this cavity after in this card inserting mouth and is separated into two cavitys, position relative with card inserting mouth on each cavity is all provided with camera, two cameras are symmetric along card inserting mouth, adopt this two cameras, make card with any one direction or face towards in insertion card inserting mouth, all have one of them camera can photograph required clearance information;
Two offsides of each cavity are all provided with symmetrical and for carrying out light filling to camera light diverting device;
Also be installed on the detection of employing infrared light reflection amount in described cavity and determine whether card is inserted into position and controls the infrared external reflection testing circuit of two cameras thus; Described infrared external reflection testing circuit is electrically connected with two cameras respectively;
When obtaining certificate picture, in card inserts, detecting output level by infrared external reflection testing circuit differentiate whether card is inserted into position, if output low level, controlling two cameras and take pictures;
The photo that shooting obtains by the Intelligent Recognition of background computer, and obtains the accurate numbering of card.
2. self-service clearance card insert type certificate recognition device according to claim 1, is characterized in that, described infrared external reflection testing circuit comprises infrared receiving/transmission and judgement unit, camera take control module and state indication unit; According to the volume reflection of infrared light, described infrared receiving/transmission and judgement unit differentiate whether card is inserted into position, if volume reflection is few, then card does not insert, if volume reflection is large, then card inserts, if when the volume reflection of infrared light reaches maximum, card is inserted into position; Whether described infrared receiving/transmission and judgement unit take control module with camera and state indication unit is electrically connected, whether show this card insert and put in place by the flicker of LED light.
3. self-service clearance card insert type certificate recognition device according to claim 2, it is characterized in that, described infrared receiving/transmission and judgement unit comprise infrared transmitting tube, infrared receiving tube, voltage comparator, the first regulating resistance and the second regulating resistance; Described infrared transmitting tube is connected with infrared receiving tube light, the two ends of described infrared receiving tube connect the first triode and first regulating resistance of series connection, and the voltage that the common port that described first triode and the first regulating resistance are formed is connected to voltage comparator by the first resistance inputs negative pole end, the voltage input positive terminal of described voltage comparator connects the second regulating resistance; The different voltages exported by the output terminal of voltage comparator judge that card is inserted into position or has been inserted into position.
4. self-service clearance card insert type certificate recognition device according to claim 2, it is characterized in that, described camera shooting control module comprises the second triode be connected with the output terminal of voltage comparator by the second resistance, and one end of described second resistance connects the 3rd resistance, the other end of described second resistance connects the base stage of the first electric capacity and the second triode, the grounded emitter of described second triode, the collector of described second triode connects the 4th resistance and forms ALAM end between the two and connect the first socket; If card does not insert or is not inserted into position, the output terminal output low level of voltage comparator, reverse through the second triode, ALAM end is high level; If when card is inserted into, the output terminal of voltage comparator exports high level, reverse through the second triode, and ALAM end is low level, and now the low level signal of ALAM end just controls camera and takes pictures and export photo.
5. self-service clearance card insert type certificate recognition device according to claim 2, is characterized in that, described state indication unit comprises concussion chip, the 3rd triode and the second socket; The output terminal of described voltage comparator connects the 3rd triode by the 5th resistance, and the emitter of the 3rd triode connects LED light and concussion chip respectively; When card is not inserted into, the output terminal output low level of voltage comparator, the 3rd triode cut-off, LED light does not work; When card is inserted into, the output terminal of voltage comparator exports high level, 3rd triode ON, concussion chip plays shake, LED light does not stop flicker, and card is now inserted into the end and is photographed identification, introduces extraneous on-off model by the second socket be connected with the common port that the 9th resistance and the tenth resistance are formed, this switching value closes interval scale certificate and is identified and passes through, and this closure signal can make the LED light of glimmering extinguish.
6. a self-service clearance recognition methods for card insert type certificate, is characterized in that, comprise the following steps:
Step 1, is inserted in card inserting mouth by needing the card identified;
Step 2, the change of infrared external reflection testing circuit detection of reflected infrared light differentiates that card is inserted into position;
Step 3, infrared external reflection testing circuit output low level, controls two camera shootings simultaneously and obtains picture;
Step 4, the picture of acquisition identifies its numbering by background computer and recalls corresponding passenger's data by it and carries out automatic comparison;
Step 5, comparison success, passenger's clearance.
7. the recognition methods of self-service clearance card insert type certificate according to claim 6, it is characterized in that, the concrete steps of described step 2 are as follows:
Step 21, infrared receiving tube receives amount of infrared light and On current;
Step 22, electric current amplifies through the first triode, and the electric current that the collector of the first triode is formed is through the first regulating resistance and form pressure drop on the first regulating resistance;
Step 23, pressure drop coating-forming voltage on the voltage input negative pole end of voltage comparator of the first regulating resistance; And the output terminal of voltage comparator exports high level;
Step 24, the second triode saturation conduction, and the current collection of the second triode is very low, namely ALAM end then enters step 3 for low level.
8. the recognition methods of self-service clearance card insert type certificate according to claim 7, is characterized in that, the concrete steps of described step 23 are: pressure drop coating-forming voltage on the voltage input negative pole end of voltage comparator of the first regulating resistance; The voltage that the voltage input negative pole end of voltage comparator and voltage input positive terminal compares, if the voltage of voltage input negative pole end is less than the voltage of voltage input positive terminal, then the output terminal of voltage comparator exports high level and enters step 24; If voltage input negative pole end voltage be greater than voltage input positive terminal voltage, then voltage comparator output terminal output low level and enter step 25.
9. the recognition methods of self-service clearance card insert type certificate according to claim 7, it is characterized in that, described step 25 is: the second triode by, and the current collection of the second triode is very high, namely ALAM end is high level, and this high level signal does not then control two camera shooting acquisition pictures and redirect is step 1.
10. the recognition methods of self-service clearance card insert type certificate according to claim 6, is characterized in that, in described step 1 card can any one direction or face towards in insertion card inserting mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410621241.8A CN104392230B (en) | 2014-11-07 | 2014-11-07 | Self-service clearance card insert type certificate identification device and its recognition methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410621241.8A CN104392230B (en) | 2014-11-07 | 2014-11-07 | Self-service clearance card insert type certificate identification device and its recognition methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104392230A true CN104392230A (en) | 2015-03-04 |
| CN104392230B CN104392230B (en) | 2018-06-22 |
Family
ID=52610131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410621241.8A Expired - Fee Related CN104392230B (en) | 2014-11-07 | 2014-11-07 | Self-service clearance card insert type certificate identification device and its recognition methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104392230B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107784297A (en) * | 2017-11-23 | 2018-03-09 | 深圳鼎识科技有限公司 | Credential reader and certification recognition system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2674522Y (en) * | 2003-12-11 | 2005-01-26 | 深圳市特种证件研究制作中心 | Automatic checking passage device for pedestrian passing |
| CN1710599A (en) * | 2005-07-13 | 2005-12-21 | 苏明儒 | Residence card verifying device |
| JP2009219536A (en) * | 2008-03-13 | 2009-10-01 | Sega Corp | Information display body and information presenting device |
| CN202534029U (en) * | 2012-03-31 | 2012-11-14 | 艾斯特国际安全技术（深圳）有限公司 | Entry device |
| CN103699892A (en) * | 2013-12-09 | 2014-04-02 | 北京文通科技有限公司 | Recognition device for electronic certificates, and trigger method thereof |
-
2014
- 2014-11-07 CN CN201410621241.8A patent/CN104392230B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2674522Y (en) * | 2003-12-11 | 2005-01-26 | 深圳市特种证件研究制作中心 | Automatic checking passage device for pedestrian passing |
| CN1710599A (en) * | 2005-07-13 | 2005-12-21 | 苏明儒 | Residence card verifying device |
| JP2009219536A (en) * | 2008-03-13 | 2009-10-01 | Sega Corp | Information display body and information presenting device |
| CN202534029U (en) * | 2012-03-31 | 2012-11-14 | 艾斯特国际安全技术（深圳）有限公司 | Entry device |
| CN103699892A (en) * | 2013-12-09 | 2014-04-02 | 北京文通科技有限公司 | Recognition device for electronic certificates, and trigger method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107784297A (en) * | 2017-11-23 | 2018-03-09 | 深圳鼎识科技有限公司 | Credential reader and certification recognition system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104392230B (en) | 2018-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104272326B (en) | Card burning preventing detecting device, terminal equipment, and card burning detecting and processing method | |
| CN205539381U (en) | Under -voltage relay of preventing false retrieval floodgate detection circuitry that opens and shuts | |
| CN206117220U (en) | Battery equalizer circuit and battery system | |
| CN204374343U (en) | Serial port line detection device | |
| CN109581192A (en) | A kind of PCBA powers on rear test device and system | |
| CN103533281A (en) | MHL identification control circuit for enhancing compatibility | |
| CN109247905A (en) | A kind of endoscopic system and judge the method whether light guide section is pulled out from host | |
| CN206378870U (en) | Recognition of face intelligent terminal | |
| CN106872845A (en) | A kind of test equipment adapter connecting detection method | |
| CN104392230A (en) | Card-plugging type certificate recognition device and recognition method for self-service custom clearance | |
| CN204347869U (en) | Self-service clearance card insert type certificate identifier | |
| CN105758382A (en) | On-line magnetic tile product detection system based on machine vision | |
| CN201845346U (en) | Finger vein image acquisition and recognition device | |
| CN206180986U (en) | Trigger circuit and earphone restore to throne | |
| CN102223475A (en) | Identification card photographing terminal equipment | |
| CN105472264B (en) | A kind of belt-type shutter exposure camera LED light filling control circuits | |
| CN107566555A (en) | Projection mobile phone | |
| CN209186635U (en) | A kind of endoscopic system | |
| CN206818851U (en) | Portable LED lamp aging tester | |
| CN110007185A (en) | A kind of detection circuit and method for single-phase zero curve and firewire and ground wire | |
| CN203894300U (en) | Electricity-stealing prevention terminal specially used for intelligent electric meter | |
| CN205622738U (en) | Polyphaser synchronizing relay trigger device with bluetooth function | |
| CN204905943U (en) | A charge indicator circuit for mobile terminal | |
| CN204067760U (en) | A kind of intelligent polychrome charging luminous data line | |
| CN203466875U (en) | Automatic camera test device for mobile phone production line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180622 |