CN103410401A - Intelligent security box, security control system adopting same and control method - Google Patents
Intelligent security box, security control system adopting same and control method Download PDFInfo
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- CN103410401A CN103410401A CN2013103168175A CN201310316817A CN103410401A CN 103410401 A CN103410401 A CN 103410401A CN 2013103168175 A CN2013103168175 A CN 2013103168175A CN 201310316817 A CN201310316817 A CN 201310316817A CN 103410401 A CN103410401 A CN 103410401A
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Abstract
The invention provides an intelligent security box which comprises a box body, a card slot and a card reader antenna, wherein the card slot is arranged in the box body and used for accommodating a folder; a label is arranged on the folder; the label comprises an RFID (radio frequency identification device) antenna and chips; the card reader antenna and the label of the folder are arranged oppositely; information recorded in the chips of all labels is read and recognized in a one-to-one correspondence manner through data transmission between the card reader antenna and the RFID antenna; the card reader antenna comprises radio frequency contacts, a radio frequency grounding layer, a plurality of antenna wires with unequal widths and a plurality of load resistors; the radio frequency contacts penetrate through buried holes and are connected with the plurality of the antenna wires with unequal widths; the plurality of the antenna wires with unequal widths also penetrate through the buried holes and are connected with the plurality of the load resistors respectively; and all the antenna wires with unequal widths are not overlapped mutually; and resistance values of the load resistors are equal.
Description
Technical field
The present invention relates to a kind of safeties and system, refer in particular to the intelligent coffer of RFID antenna and insurance control system and the control method that adopts it.
Background technology
Along with informationalized development, the information system management of file or valuables has progressively obtained application and has promoted, yet, existing file electronization burglary-resisting system, lack combination on the whole, be subject to the radiation scope of card reader antenna, can not be used for closely and read with the label information of far range.In the strongbox of built-in file or valuables, if adopt UHF RFID scheme, when needs are placed a plurality of files or valuables, and it is put in order while there are certain requirements, shielding trench need to be set and make each article card reader read discriminably the label information of corresponding article, whether deposit in strongbox in order to judge article.It is existing that to be applicable in strongbox to can be what file or article were distinguished to management be HF RFID antenna scheme, HF RFID antenna, label work institute energy requirement obtains by the mode of label antenna by inductance coupling high, therefore label can only be read in finite region, general read range is 1cm to 10cm, its characteristic is favourable to the zone fixed point management of file or article, but, because it can not be read at a distance, does not therefore possess the antitheft function of remote tracking.The principle of UHF RFID antenna work is the ELECTROMAGNETIC REFLECTION scattering, and label can effectively read than distant location, under the peak power of standard agreement, reads distance and can reach 10m or farther, and this characteristic can be used in the scheme of article anti-theft.But, UHF RFID is under conventional card reader antenna, can't limit the read range of label, according to its communication protocol, card reader will read all labels in card reader antenna radiation coverage, therefore UHF RFID is difficult to be used in the Managed Solution of distinguishing in zone among a small circle, and as schemes such as file managements, conventional UHF RFID technology just is difficult to realize.
Also there are some producers to propose to adopt simultaneously the scheme of double frequency-namely post simultaneously simultaneously HF RFID antenna and UHF RFID antenna on file or article, in the zone of strongbox, distinguish in management and use HF RFID antenna, read at a distance middle use UHF RFID antenna antitheft; Although this scheme has solved certain system problem, made up to a certain extent HF RFID scheme and UHF RFID scheme shortcoming separately, this scheme must provide the hardware facility of two cover different frequency different agreements, and cost is huge; In addition, on identical file or article, post simultaneously HF RFID antenna and UHF RFID antenna, be difficult to avoid to cause two mutual interference effects of label antenna, thereby cause the severe exacerbation of two tag performance.
Some producers propose by strongbox, making the mode of shielding cavity, file or article to be distinguished to management, have namely increased cost and manufacture difficulty, are difficult to fundamentally limit again the working region scope of antenna, are difficult to get a desired effect.
Therefore, be necessary to provide a kind of brand-new intelligent coffer that can take into account in-plant file management, insurance control system and control method with remote file theftproof system, real is necessary, effectively file or article are carried out to accurate differentiation management and make an inventory, closely whether document of identify is removed strongbox, by remote discriminating, has avoided file illegally to be taken out the theft-proof space zone simultaneously.
Summary of the invention
Based on the deficiencies in the prior art, main purpose of the present invention is to provide a kind of can deposit and put the intelligent coffer that order carries out accurately managing control to file.
Another main purpose of the present invention is to provide a kind of and can to file, puts order simultaneously and carry out accurate control and management, and it is carried out to effectively antitheft insurance control system and control method in the certain space scope.
The invention provides a kind of intelligent coffer, it comprises casing, draw-in groove and card reader antenna, wherein, draw-in groove is built in casing, for housing file holder, described file is provided with label, described label contains RFID antenna and chip, the label of card reader antenna and file is oppositely arranged, transfer of data by card reader antenna and RFID antenna, correspondence reads and identifies the information recorded in the chip of each label one by one, it is characterized in that: described card reader antenna comprises radio-frequency joint, the radio frequency ground plane, some are not waited the Wide antenna cabling, several load impedances, wherein, described radio-frequency joint runs through buried via hole and does not wait the Wide antenna cabling to be connected with described some, described some are not waited the Wide antenna cabling also to run through buried via hole to be connected respectively with several load impedances, described each do not wait Wide antenna cabling non-overlapping copies to connect, the resistance of each load impedance equates.
Preferably, in described card reader antenna, further be provided with power splitter, it is connected in radio-frequency joint and each does not wait between the Wide antenna cabling, and described not wait the Wide antenna cabling be the 2-8 bar, it is arranged between two ground planes, and it is corresponding that separated time number and the antenna of described power splitter walked number of lines.
Preferably, the arc curve of described antenna meets quadratic function equation: Y=ax
2+ bx+c, wherein, X is the abscissa of camber line, and Y is the ordinate of camber line, and the curve radian of described each coaxial cabling is identical, the described overall length that does not wait the Wide antenna cabling is 1/2nd wavelength, do not wait the radian of Wide antenna cabling to adopt the quadratic function equation curve, make the wide variety of antenna cabling carry out in mild mode, effectively avoided the sudden change due to trace width, and cause the situation of impedance discontinuity, the bandwidth of operation of broadening antenna effectively.
Preferably, load impedance used can meet that to calculate the total antenna impedance of gained be 50 ohm, and each does not wait the resistance of the load impedance that the Wide antenna cabling connects equal.
In intelligent coffer, in the time of in file extend into strongbox, the spacing between described RFID antenna and card reader antenna is 1-4cm, and the spacing between described card reader antenna is more than or equal to 4cm.Each card reader antenna is reading tag information in effective range.
The invention provides a kind of insurance control system that adopts described intelligent coffer, single channel card reader, multichannel card reader that it comprises central processing unit and is attached thereto, described single channel card reader is connected with gain directional antenna, described multichannel card reader is connected with each card reader antenna in intelligent coffer, respectively will be by gain directional antenna and label information that card reader antenna is obtained, through single channel card reader and multichannel card reader, transfer to central processing unit and judge.By the insurance control system, strongbox and the unification of gate inhibition's theftproof system are combined in an insurance control system, by central processing unit, two burglary-resisting system are managed, control respectively, by different antennas, same label is distinguished, make it when different azimuth is read, mean different meanings, used dexterously the characteristic of improvement antenna, but whether be removed strongbox at document of identify closely, or no put correctly, at remote document of identify, whether taken out antitheft zone.
The present invention also provides a kind of control method that adopts described insurance control system, and it comprises the following steps:
Step 1) is opened multichannel card reader and the inner card reader antenna of strongbox, if the label that the information with it of reading is complementary is opened the inner card reader antenna of next strongbox in order, the label of next file is read;
Step 2) if current card reader antenna does not read any label information, open gain directional antenna;
If gain directional antenna reads label information, start one-level and warn, stolen with the prompting file, in the restarting systems simultaneously of warning, restart to scan label;
If gain directional antenna does not read label information, this restarts this card reader antenna, re-starts once and reads;
If the label information that the current card reader antenna of step 3) reads is not corresponding with it, starts warn device and carry out secondary and warn, with prompting file put correctly not; Open simultaneously next card reader antenna warning, continue the label of next file is read;
Step 4) reads each label information successively circularly.
Wherein, in step 3) and step 4), in the whole system scanning process, one-level is warned and is warned separately with secondary, namely can warn simultaneously, also can separate and warn respectively.
Compared with prior art, a kind of intelligent coffer of the present invention and adopt its insurance control system and control method to have the following advantages:
(1) in described intelligent coffer, adopted the UHF RFID card reader antenna of improvement to realize in-plant data transmission, each card reader antenna, RFID antenna and chip are one-to-one relationship, by the card reader antenna correspondence, read the RFID antenna, judge whether putting of the interior file of short range be correct;
(2) by the card reader antenna in strongbox, improve, by adopting power divider and end to be connected to 1/2nd long not wide antenna cablings of load impedance, effectively limit the radiation scope of the card reader antenna of knowing clearly, its radiated electric field is decayed rapidly with the distance antenna distance, card reader antenna after improvement defines the read range of label, reading tag information within the specific limits only, removed from as each file arranges shielding box, also avoided the phenomenon of misreading between adjacent card reader;
(3) adopted built-in UHF RFID antenna in label, utilize the characteristic of this antenna, namely can meet the closely data of card reader reads, simultaneously, also can be read at a distance label information by gain directional antenna, realization is accurate file management in strongbox, and has the anti-theft function read at a distance;
(4) by the insurance control system is set, by closely combining with remote theftproof system of strongbox and gain directional antenna, taking in antitheft of file carried out to unified management, and carry out multi-form alarm according to different situations, to assist the related personnel to understand in time the present situation of monitoring file, if occur, when stolen, also can take measures in time to remedy.
(5) by the insurance control method is set, by file management in strongbox and the remote antitheft control that combines, the information of reading tag in certain sequence, confirm whether the order of putting is correct, when card reader antenna does not read any label information, the supporting paper folder is not in draw-in groove, the burglary-resisting system of OnNow gain directional antenna, by remote theft-proof system, judge the region of label, with the file to illegally taking antitheft zone out of, monitor timely, play the effect of remote anti-theft, prevent the stolen of vital document folder.
The accompanying drawing explanation
Fig. 1 is the structural representation of intelligent coffer of the present invention;
Fig. 2 is the single file of intelligent coffer of the present invention and the assembling schematic diagram of card reader antenna;
Fig. 3 is a plurality of files of intelligent coffer of the present invention and the assembling schematic diagram of a plurality of card reader antenna;
Fig. 4 a is the input buried via hole schematic diagram of the card reader antenna of intelligent coffer of the present invention;
Fig. 4 b is the output buried via hole schematic diagram of the card reader antenna of intelligent coffer of the present invention;
Fig. 4 c is the buried via hole lateral view of the card reader antenna of intelligent coffer of the present invention;
Fig. 4 d is the PCB second layer power splitter schematic diagram of the card reader antenna of intelligent coffer of the present invention;
Fig. 4 e is the 3rd layer of GND2 schematic diagram of PCB of the card reader antenna of intelligent coffer of the present invention;
Fig. 5 a is the PCB first floor GND1 schematic diagram of the card reader antenna of intelligent coffer of the present invention;
Fig. 5 b is the 8th layer of GND3 schematic diagram of PCB of the card reader antenna of intelligent coffer of the present invention;
Fig. 6 a is the schematic diagram of the 4th layer of antenna cabling 1 of PCB of the card reader antenna of intelligent coffer of the present invention;
Fig. 6 b is the schematic diagram of PCB layer 5 antenna cabling 2 of the card reader antenna of intelligent coffer of the present invention;
Fig. 6 c is the schematic diagram of PCB layer 6 antenna cabling 3 of the card reader antenna of intelligent coffer of the present invention;
Fig. 6 d is the schematic diagram of PCB layer 7 antenna cabling 4 of the card reader antenna of intelligent coffer of the present invention;
Fig. 7 is the reflectance factor S11 of card reader antenna of intelligent coffer of the present invention and the graph of a relation of operating frequency;
Fig. 8 is the electric-field intensity distribution schematic diagram in the card reader antenna different distance space of intelligent coffer of the present invention;
Fig. 9 a is the antenna space parallel surface electric-field intensity distribution design sketch one of the card reader antenna of intelligent coffer of the present invention;
Fig. 9 b is the antenna space parallel surface electric-field intensity distribution design sketch two of the card reader antenna of intelligent coffer of the present invention;
Figure 10 a is the present invention's intelligence insurance control system block diagram;
Figure 10 b is the space schematic diagram one of the present invention's intelligence insurance control system;
Figure 10 c is the space schematic diagram two of the present invention's intelligence insurance control system;
Figure 11 is the flow chart of the present invention's intelligence insurance control method.
The specific embodiment
With reference to Fig. 1-shown in Figure 3, in order to make various important article or file, can appropriately take in, and prevent stolen or misplace within the specific limits, improve the safety of its keeping, the insurance control system and the control method that a kind of intelligent coffer are provided and have adopted described strongbox, accurately limit the read range of its label, realization is accurately file management in strongbox, and remote security settings, set up unitized, the wireless anti-theft system of diversification, security settings have been simplified, and will be closely antitheft and remote antitheft combining, article or file are deposited in certain area coverage safety and accuracy have greatly been improved.Below introduce successively respectively intelligent coffer, insurance control system and control method.
The invention provides a kind of intelligent coffer 100, it comprises casing 1, draw-in groove 2 and card reader antenna 4, wherein, draw-in groove 2 is built in casing 1, and for housing file holder 3, described file 3 is provided with label 40, described label 40 contains RFID antenna 42 and chip (not indicating), card reader antenna 4 is oppositely arranged with the label of file 3, and by the transfer of data of card reader antenna 4 and RFID antenna 42, correspondence reads and identify the information that each label 40 chips record one by one.Wherein, casing 1 is be used to taking in article or the file for the treatment of keeping, and in the present embodiment, the housing file holder of take is example.If in casing 1, be built-in with individual group of draw-in groove 2, described draw-in groove 2 is arranged parallel to each other, its width slightly is wider than the thickness of file 3, guarantee that file 3 pushes in casing 1 along draw-in groove 2, departing from of larger distance, over against answering described card reader antenna 4, do not occur in its ridge standard laid down by the ministries or commissions of the Central Government label, and guarantee at every turn to extend into casing 1 when interior along draw-in groove 2, the label 40 of its ridge section is fixed with the distance of card reader antenna 4, and in the present invention, the spacing between described label 40 and card reader antenna 4 is 1-4cm.Draw-in groove 2 only, for by each file 3 spaces, puts it neat in order, so can arrange too high.The back side of described each file 3 is provided with label 40, and described label 40 is embedded with chip and RFID antenna 42, in described chip, is loaded with the relevant information of corresponding folder, as folder name, person liable, particular content etc., identifies with the content to file.Described RFID antenna 42, the communication that respective labels 40 is put down in writing, to card reader antenna 4 on the other side, reads and identifies it by card reader antenna 4, if both Corresponding matchings mean that the file 3 in this draw-in groove 2 is placed correct; Otherwise, if both do not mate, mean that the file 3 in this draw-in groove 2 is placed incorrect; If fail, read any signal or data, mean not place file in this draw-in groove 2.File 3 of described each draw-in groove 2 corresponding placement, the corresponding label 40 of described each file 3, in each label 40, be built-in with a RFID antenna 42, the corresponding card reader antenna 4 of each RFID antenna 42, by card reader antenna 4 one by one correspondence read each corresponding RFID antenna 42, with the attribute information by respective labels, transfer to card reader antenna 4 and identify and judge, prevent from misreading or misplacing.In the present embodiment, described file 3 is financial statement, and first quarter financial statement correspondence is positioned in No. 1 draw-in groove, and corresponding with No. 1 card reader antenna; The second quarter, the financial statement correspondence was positioned in No. 2 draw-in grooves, and corresponding with No. 2 card reader antenna; Correspondence is arranged successively.In the present invention, the RFID antenna is preferably UHF RFID antenna, and its frequency range is 860MHz-960MHz.
In the present invention, in intelligent coffer, spacing between described RFID antenna 42 and card reader antenna 4 is 1-4cm, spacing between described card reader antenna is more than or equal to 4cm, the read range that is described RFID antenna 42 is width 4cm, in the solid space of height 4cm, the back side of card reader antenna 4 is not also effectively read, by limiting effective read range of RFID antenna 42, make the signal transmission of adjacent R FID antenna 42 interference-free, save the needs that shielding arranges, simplified body structure, also improved the accuracy of signal data transmission.
Below the concrete structure of described card reader antenna 4 is further described.Shown in Fig. 4 a, described card reader antenna 4 comprises that the radio-frequency joint 420 that is arranged on antenna plate, radio frequency ground plane 421, some do not wait Wide antenna cabling 422 and several load impedances 423, wherein, described radio-frequency joint 420 runs through buried via hole 425 by power splitter 424 and does not wait Wide antenna cabling 422 to be connected with described some, described some are not waited Wide antenna cabling 422 also to run through buried via hole 423 to be connected respectively with several load impedances 423, described each do not wait Wide antenna cabling 422 non-overlapping copies to connect, and the resistance of each load impedance 423 equates.From the sectional view of antenna, illustrate, from top to bottom, first floor is radio frequency ground plane 421, and altogether, radio-frequency maser center signal line connects buried via hole 425, and is connected with not waiting Wide antenna cabling 422 lines for the outer rim of radio-frequency joint 420 and radio frequency ground plane 421.Wherein, described each do not wait Wide antenna cabling 422 non-overlapping copies to connect.Shown in Fig. 4 b-4c, each does not wait Wide antenna cabling 422 in buried via hole D1, D2, D3 and the D4 of space, to penetrate respectively, again after parallel cabling, in organizing buried via hole A1, A2, A3 and A4 separately, pass, connect respectively its load impedance 423, wherein, each does not wait the equal in length of Wide antenna cabling 422.
In conjunction with reference to shown in Fig. 4 d, in a preferred embodiment of the invention, described card reader antenna 4 further is provided with power splitter 424, and it is connected in radio-frequency joint 420 and each does not wait between Wide antenna cabling 422.Described power splitter 424 is drawn by radio-frequency joint 420, and does not wait Wide antenna cabling 422 to connect with each, is divided into multichannel output with the input signal by radio-frequency joint 420, and the separated time number of described power splitter 424 is corresponding with the number of antenna cabling 422.In the present embodiment, one minute four power splitter of take are example, and the described Wide antenna cabling 422 that do not wait is made as four, and the output of described one minute four power splitters does not wait Wide antenna cabling 422 to join with four respectively.In the present invention, the described optional 2-8 bar of Wide antenna cabling that do not wait, it is arranged between two radio frequency ground planes 421.In the present embodiment, from top to bottom, first floor is radio frequency ground plane GND1, the second layer is one minute four power splitter 424 routing layer, and the 3rd layer is radio frequency ground plane GND2, the 4th layer to layer 7 be antenna cabling 422, be respectively the 4th layer of 422a, layer 5 422b, layer 6 422c, layer 7 422d: the 8th layer is radio frequency ground plane GND3.Altogether, radio-frequency maser center signal line connects buried via hole 425, and is connected by power splitter 424 with not waiting Wide antenna cabling 422 lines for the outer rim of radio-frequency joint 420 and radio frequency ground plane GND1, and wherein, described each do not wait Wide antenna cabling 422 non-overlapping copies to connect.
With the resistance of each load impedance 423 that does not wait Wide antenna cabling 4 to connect, equate, the resistance that below has the explanation load impedance is set requirement.Shown in Fig. 4 d, the power splitter input bus 424a of described one minute four power splitters joins by right side buried via hole and radio-frequency joint, and described input bus is divided into four groups of output 424b through quartile, with each, does not wait Wide antenna cabling 422 to be connected accordingly respectively.If the characteristic impedance Z of bus
0Be 50 ohm, width is Ka, and total line length is 1/8 operation wavelength, the characteristic impedance Zd of each four centimeters cablings, and width is Kd, length is 1/4 operation wavelength, the characteristic impedance Z of each power splitter output cabling 424c
0, width is Ka, length is 1/8 operation wavelength.
According to matching principle: the total input impedance of power splitter should hold the parallel resistance of input impedance to equate with each, that is: Z
0=Z
In1|| Z
In2|| Z
In3|| Z
In4Therefore=50 ohm, because this power divider is quartering power splitter, respectively hold input impedance because four times of total input impedance, that is: Z
In1=Z
In2=Z
In3=Z
In4=4Z
0=200 Ω; Again due to Z
In1, Z
In2, Z
In3, Z
In4By quarter-wave impedance transformation line and each terminate load impedance Z
A0Coupling can obtain according to the formula of quarter-wave impedance transformation line:
Z
In1* Z
A01=(Z
d)
2, Z
In2* Z
A02=(Z
d)
2, Z
In3* Z
A03=(Z
d)
2, Z
In4* Z
A04=(Z
d)
2, wherein
Z
A01=Z
A02=Z
A03=Z
A04=50 Ω therefore can be calculated each four centimeters cabling characteristic impedances of power splitter are:
According to above can be calculated, then according to strip line character impedance computation formula:
Wherein H is the height between radio frequency ground plane GND1 and radio frequency ground plane GND2, and T is thickness, and W is trace width; When defining the PCB height H, and the cabling thickness T, and pcb board material dielectric constant E
r, namely can calculate according to different characteristic impedance values corresponding live width W.According to this formula, getting the PCB height H is 2.0mm, and the cabling thickness T is 0.035mm, relative dielectric constant E
rBe taken as 4.5, can calculate the characteristic impedance Z of bus
0The corresponding live width Ka of=50 Ω is about 0.8mm, and the characteristic of four centimetre circuits is Z
dThe corresponding live width Kd of=100 Ω is about 0.1mm.
At the power splitter end, four centimeters mouths are beaten respectively buried via hole D1, D2, D3, D4, respectively with (the 4th layer of PCB) antenna cabling 422a, (PCB layer 5) antenna cabling 422b, (PCB layer 6) antenna cabling 422c, (PCB layer 7) antenna cabling 422d is connected; Each antenna routing layer end, then, by buried via hole A1, A2, A3, A4, with the load impedance 432 that is positioned at the PCB bottom, be connected respectively, the resistance of each load impedance is Z
L=200 Ω, namely load impedance used can meet that to calculate the total antenna impedance of gained be 50 ohm.
Shown in Fig. 5 a-Fig. 5 b, Fig. 5 a is the top view of antenna top layer, and Fig. 5 b is the upward view of antenna bottom, several via holes 426 are arranged at the outer rim of antenna plate, and run through whole antenna plate, and connect radio frequency ground plane 421, and do not wait Wide antenna cabling 422 not to be electrically connected to other.If the access port buried via hole of radio-frequency joint 420 is of a size of a, peripheral headroom is of a size of b, and its size is determined by following theoretical formula: because the capacitance per unit length design formulas of wire is:
Wherein ε is dielectric constant; Unit length inductance design formulas is:
Design formulas according to characteristic impedance:
Calculate desirable a=0.6mm, b=2.6mm.
In the present invention, shown in Fig. 6 a-6d, the arc curve of described antenna meets quadratic function equation: Y=ax
2+ bx+c, described antenna cabling bilateral symmetry, wherein, establishing the antenna lower limb is the X-axis line, and the central vertical line is the Y-axis line, and namely X is the abscissa of camber line, and Y is the ordinate of camber line.In one embodiment of the invention, get a=0.01, b=0, c=2, curve meets formula Y=0.01x
2+ 2, can obtain thus the narrowest width of antenna center line is 2mm, and the most wide degree in two ends is 11mm, and total track lengths is about 1/2nd wavelength, gets 60mm.Described each do not wait the curve radian of Wide antenna cabling identical, and between the different antennae cabling, the level height of adjacent buried via hole reduces successively, effectively avoids buried via hole and other PCB layers to be short-circuited.
With reference to shown in Figure 7, described card reader antenna is shown in operating frequency range, when reflectance factor is less than 12dB, have few reflection loss.Illustrate that antenna possesses good impedance matching.With reference to shown in Figure 8, illustrate apart from antenna different distance space electric field strength distribution curve, get apart from the parallel curves of antenna different distance, calculate the spatial distribution of its electric-field intensity, electric-field intensity is the strongest in the center of antenna position, positive and negative 40mm, approximately 8cm scope internal electric field intensity is the strongest, and the antenna edge electric-field intensity beyond 8cm decays rapidly; Along with parallel lines are more and more far away apart from antenna, electric-field intensity decays rapidly, and from the 2mm distance to the 40mm distance, center position has the decay of nearly 38dB; Illustrate that antenna energy mainly concentrates on long 8cm, wide 4cm, in the cube scope apart from 0-40mm, thereby effectively define the read range of label.Fig. 9 a-9b is antenna space tangent plane electric-field intensity distribution situation, and this figure left side means that different colours means different electric-field intensity values, and color is darker, and the surface field intensity level is more weak.The important long 8cm of antenna tangent plane that concentrates on of antenna electric field intensity, in the spatial dimension of wide 4cm; Thereby limiting label can only effectively be read in this planar range.
Shown in Figure 10 a-10b, the present invention also provides a kind of insurance control system of intelligent coffer, for the burglary insurance in the certain space scope, the single channel card reader 201 that it comprises central processing unit 200 and is attached thereto, multichannel card reader 202, described single channel card reader 201 is connected with gain directional antenna 203, described multichannel card reader 202 is connected with each card reader antenna 4 in intelligent coffer, respectively will be by gain directional antenna 203 and card reader antenna 4 label information that obtains, through single channel card reader 201 and multichannel card reader 202, transferring to central processing unit 200 judges.In the present embodiment, described gain directional antenna 203 is installed on doorway place, and what the beam position personnel passed in and out office must be through zone, and its wave beam is orientation and high-gain, can read at a distance UHF RFID antenna, effectively prevents skip; Described single channel card reader 201 is electrically connected to gain directional antenna 203, also is installed near doorway, and the remote signal fed back be used to reading gain directional antenna, and transmit it to central processing unit 200 and analyze.Wherein, described multichannel card reader 202 is made as the four-way card reader, by the four-way card reader, with four groups of card reader antenna, be connected respectively, be installed in strongbox, for reading the signal that card reader antenna 4 is fed back, described card reader antenna is assemblied on intelligent coffer, its with the label of each file of taking on the corresponding setting of RFID antenna, the label information transmitted to read the RFID antenna, transfer to central processing unit through the four-way card reader and analyze judgement.
In a preferred embodiment of the invention, the insurance control system also can further comprise warn device 204, and it is electrically connected to central processing unit 200, and the signal transmitted by single channel card reader 201 and multichannel card reader 202 carries out alarm to the present situation.When if gain directional antenna 203 reads label information, through single channel card reader 201, feed back to central processing unit 200, by it, to warn device 204, send alarm signal after the internal logic judgement, to drive it, send the one-level alarm, to mean that file is carried out in antitheft scope interval.If in the signal that multichannel card reader 202 is obtained, when card reader antenna corresponding with RFID antenna in label when not suitable, feed back to central processing unit 200, by it, to warn device 204, send alarm signal after the internal logic judgement, to drive it, send the secondary alarm, put incorrect to mean file.By different warning forms, to the related personnel, point out the present situation of file, with the prompting people, take measures in time, by the file filing, to guarantee in time the safety of file for the present situation.
In a preferred embodiment of the invention, the insurance control system also can further comprise data storage 205, it is electrically connected to central processing unit 200, with the label information preserving different card reader antenna and gain directional antenna in real time and read and read the time, can extract at any time described information and analyze for the related personnel, know that file taken out of the time in theft-proof space.
In a preferred embodiment of the invention, the insurance control system also can further comprise man-machine interface 206, and it is electrically connected to central processing unit 200, and by man-machine interface, the related personnel can be to whole system monitoring state and setting.
In a preferred embodiment of the invention, the insurance control system also can further comprise power supply 207, it is electrically connected to central processing unit 200, in described power supply, contain a battery, in the normal power supply situation, Yi Bian can supply system works, Yi Bian be charge in batteries, when power supply was artificially cut off, battery can continue as the system works power supply.
With reference to shown in Figure 11, the present invention also provides a kind of control method of insuring control system, and it comprises the following steps:
Step 1) is opened multichannel card reader and the inner card reader antenna of strongbox, if the label that the information with it of reading is complementary is opened the inner card reader antenna of next strongbox in order, the label of next file is read;
Step 2) if current card reader antenna does not read any label information, open gain directional antenna;
If gain directional antenna reads label information, start one-level and warn, stolen with the prompting file, in the restarting systems simultaneously of warning, restart to scan label;
If gain directional antenna does not read label information, this restarts this card reader antenna, re-starts once and reads;
If the label information that the current card reader antenna of step 3) reads is not corresponding with it, starts warn device and carry out secondary and warn, with prompting file put correctly not; Open simultaneously next card reader antenna warning, continue the label of next file is read;
Step 4) reads each label information successively circularly.
Wherein, in step 3) and step 4), in the whole system scanning process, one-level is warned and is warned separately with secondary, namely can warn simultaneously, also can separate and warn respectively.
In step 1), at first, open card reader antenna and multichannel card reader, in order the label of file read, when the label of the file in first draw-in groove during with relative first card reader antenna Corresponding matching, mean that current file folds up seated position correct, next, open next card reader antenna, if the label of the file in second draw-in groove is during with second relative card reader antenna Corresponding matching, mean that current file folds up seated position correct, next the label that continues according to priority alternative document to be pressed from both sides reads, in the present invention, set single card reader antenna reading tag and be set as 200ms cycle time, in the present embodiment, by opening successively card reader antenna, order reads the label of four financial statement files, in each label, record the information of each file of sign, by reading described each label, to judge the current file folder, whether place correct, reading result according to a upper card reader antenna, carry out sequence starting card reader antenna successively, can prevent that the signal between adjacent card reader antenna from disturbing, simultaneously, people also can to the decision process of each file, feed back in time in time, so that can understand the placement situation of each file.
In step 2) in, if in current strongbox inside, arbitrary card reader antenna does not read any label information, open gain directional antenna, if gain directional antenna reads label information, by the single channel card reader, feed back to central processing unit, central processing unit sends the one-level alarm signal to warn device, drive warn device and carry out the one-level warning, to mean that the file that gain directional antenna scans with readable tag passes through and leaves in its radiation scope, current have file illegally to be taken and leave away antitheft zone, starting one-level reports to the police, to remind related personnel's caution and to take in time corresponding measure prevent or remedy, if gain directional antenna does not read label information, this restarts this card reader antenna, re-starts once and reads, in the present invention, described gain directional antenna reading tag is set as 600ms cycle time,
In step 3), if the label information that the inner card reader antenna of current strongbox reads is not corresponding with it, by the multichannel card reader, feed back to central processing unit, central processing unit sends the secondary alarm signal to warn device, drive warn device and carry out the secondary warning, to mean the current file folder malposition of being put, remind the related personnel in time corresponding file correspondence to be put correctly, open simultaneously next strongbox card reader antenna warning, continue the label of next file is read;
In the whole system scanning process, one-level is warned and is warned separately with secondary, namely can warn simultaneously, also can separate and warn respectively, respectively the different situations of file are reported to the police, one-level is warned and is pointed out file stolen, and secondary is warned and pointed out file in strongbox, to put incorrect.
Step 4) reads each label information successively circularly, constantly the situation of file is monitored in real time, to reach omnibearing burglary insurance purpose.
A kind of intelligent coffer of the present invention and adopt its insurance control system and control method to have the following advantages:
(1) in described intelligent coffer, adopted the UHF RFID antenna of improvement to realize in-plant data transmission, each card reader antenna, RFID antenna and label are one-to-one relationship, by the card reader antenna correspondence, read the RFID antenna, judge whether putting of the interior file of short range be correct;
(2) by the card reader antenna in strongbox, improve, by adopting power divider and end to be connected to 1/2nd long not wide antenna cablings of load impedance, effectively define the radiation scope of card reader antenna, its radiated electric field is decayed rapidly with the distance antenna distance, card reader antenna after improvement defines the read range of label, reading tag information within the specific limits only, removed from as each file arranges shielding box, also avoided the phenomenon of misreading between adjacent card reader;
(3) adopted built-in UHF RFID antenna in label, utilize the characteristic of this antenna, to meet the closely data of card reader, read, simultaneously, also can be read at a distance label information by gain directional antenna, realization is accurate file management in strongbox, and antitheft effect within the specific limits;
(4) by the insurance control system is set, by closely combining with remote theftproof system of strongbox and gain directional antenna, to the management of file with antitheftly carry out unified management, and carry out multi-form alarm according to different situations, to assist the related personnel to understand in time the present situation of monitoring file, if occur, when stolen, also can take measures in time to remedy.
(5) by the insurance control method is set, by file management in strongbox and the remote antitheft control that combines, the information of reading tag in certain sequence, confirm whether the order of putting is correct, when card reader antenna does not read any label information, the supporting paper folder is not in draw-in groove, the burglary-resisting system of OnNow gain directional antenna, by remote theft-proof system, judge the region of label, with the file to illegally taking antitheft zone out of, monitor timely, play the effect of remote anti-theft, prevent the stolen of vital document folder.
Claims (10)
1. intelligent coffer, it comprises casing, draw-in groove and card reader antenna, wherein, draw-in groove is built in casing, for housing file holder, described file is provided with label, described label contains RFID antenna and chip, the label of card reader antenna and file is oppositely arranged, transfer of data by card reader antenna and RFID antenna, correspondence reads and identifies the information recorded in the chip of each label one by one, it is characterized in that: described card reader antenna comprises radio-frequency joint, the radio frequency ground plane, some are not waited the Wide antenna cabling, several load impedances, wherein, described radio-frequency joint runs through buried via hole and does not wait the Wide antenna cabling to be connected with described some, described some are not waited the Wide antenna cabling also to run through buried via hole to be connected respectively with several load impedances, described each do not wait Wide antenna cabling non-overlapping copies to connect, the resistance of each load impedance equates.
2. intelligent coffer according to claim 1, it is characterized in that: in described card reader antenna, further be provided with power splitter, it is connected in radio-frequency joint and each does not wait between the Wide antenna cabling.
3. intelligent coffer according to claim 2, it is characterized in that: the described Wide antenna cabling that do not wait is the 2-8 bar, and it is arranged between two ground planes, and it is corresponding that separated time number and the antenna of described power splitter walked number of lines.
4. intelligent coffer according to claim 2, it is characterized in that: the arc curve of described antenna meets quadratic function equation: Y=ax
2+ bx+c, wherein, X is the abscissa of camber line, and Y is the ordinate of camber line, and described each do not wait the curve radian of Wide antenna cabling identical.
5. intelligent coffer according to claim 4 is characterized in that: the described overall length that does not wait the Wide antenna cabling is 1/2nd wavelength.
6. intelligent coffer according to claim 5, it is characterized in that: described RFID antenna is UHF RFID antenna.
7. intelligent coffer according to claim 2 is characterized in that: load impedance used can meet that to calculate the total antenna impedance of gained be 50 ohm.
8. according to the described intelligent coffer of any one in claim 1-7, it is characterized in that: in intelligent coffer, after in file extend into strongbox, the spacing between described RFID antenna and card reader antenna is 1-4cm, and the spacing between described card reader antenna is more than or equal to 4cm.
9. insurance control system that adopts the intelligent coffer of claim 1, it is characterized in that: the single channel card reader that comprises central processing unit and be attached thereto, multichannel card reader, described single channel card reader is connected with gain directional antenna, described multichannel card reader is connected with each card reader antenna in intelligent coffer, respectively will be by gain directional antenna and label information that card reader antenna is obtained, through single channel card reader and multichannel card reader, transfer to central processing unit and judge.
10. control method that adopts the insurance control system of claim 9 is characterized in that comprising the following steps:
Step 1) is opened multichannel card reader and the inner card reader antenna of strongbox, if the label that the information with it of reading is complementary is opened the inner card reader antenna of next strongbox in order, the label of next file is read;
Step 2) if current card reader antenna does not read any label information, open gain directional antenna;
If gain directional antenna reads label information, start one-level and warn, stolen with the prompting file, in the restarting systems simultaneously of warning, restart to scan label;
If gain directional antenna does not read label information, this restarts this card reader antenna, re-starts once and reads;
If the label information that the current card reader antenna of step 3) reads is not corresponding with it, starts warn device and carry out secondary and warn, with prompting file put correctly not; Open simultaneously next card reader antenna warning, continue the label of next file is read;
Step 4) reads each label information successively circularly;
Wherein, in step 3) and step 4), in the whole system scanning process, one-level is warned and is warned separately with secondary, namely can warn simultaneously, also can separate and warn respectively.
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