CN102842054B - Electronic seal and method for checking goods through electronic seal - Google Patents
Electronic seal and method for checking goods through electronic seal Download PDFInfo
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- CN102842054B CN102842054B CN201110265246.8A CN201110265246A CN102842054B CN 102842054 B CN102842054 B CN 102842054B CN 201110265246 A CN201110265246 A CN 201110265246A CN 102842054 B CN102842054 B CN 102842054B
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- 206010011968 Decreased immune responsiveness Diseases 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
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- 230000032258 transport Effects 0.000 description 4
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Abstract
An electronic seal with multiple identification radio frequency identification and a method for checking goods through the electronic seal. The electronic seal comprises a wireless radio frequency identification device, an antenna device and an impedance matching circuit. The radio frequency identification device comprises at least two radio frequency identification units, and each radio frequency identification unit is used for providing a unique code for identification. The antenna device is used for electrically connecting to the radio frequency identification unit and receiving an identification electromagnetic wave signal so as to excite the radio frequency identification unit to send out a unique code through the antenna device. The impedance matching circuit is arranged between the radio frequency identification unit and the antenna device and used for adjusting the impedance matching value from the radio frequency identification unit to the antenna device so as to adjust the excited power and the feedback power of the unique code sent by the radio frequency identification unit through the antenna device.
Description
Technical field
The present invention is relevant with e-seals, particularly has the e-seals of many identification radio frequency identifications and a kind of method examined the goods through e-seals about a kind of.
Background technology
Referring to shown in " Fig. 1 ", is the typical e-seals 900 of one, in order to seal the door of a counter, and only can unload by the mode destroyed.E-seals 900 comprises latch 910, plug housing 920, radio frequency identification chip 930 and antenna assembly 940.Radio frequency identification chip 930 and antenna assembly 940 are arranged in latch 910 and plug housing 920 respectively, and be electrically connected when latch 910 inserts plug housing 920 and is fastened, identification that one reader (RFID reader) is sent read electric wave through antenna assembly 940 receive by radio frequency identification chip 930, and excite radio frequency identification chip 930 to send unique code entrained by it.Through this unique code, whether can be replaced by identification e-seals 900, use and confirm that counter is not substitute, stolen in transport process.E-seals 900 has replaced gradually at present and has transmitted mechanical type strip of paper used for sealing (needing artificial visual inspection to print number and outward appearance whether integrality), the demand that can speed passage through customs when transported across country in response to a large amount of counter.
Radio frequency identification chip 930 in the e-seals 900 that customs of existing various countries adopts, its communications protocol and data layout belong to disclosed standard (ISO 18000-6C/EPC Class 1 Generation 2), make manufacturer can the various matching component of self-developing with the demand in response to customs of various countries.But disclosed standard represents anyone and after the unique code recording radio frequency identification chip 930 with reader side, can copy out the radio frequency identification chip 930 that has identical unique code, and then form another e-seals 900.Thus, after unlatching one counter in transit, can easily with forge e-seals 1 replace original e-seals 900, and be not found counter be once unlocked stealing or even whole counter once substitute.Therefore, after how avoiding the unique code of e-seals 900 to be logged, copy another e-seals 900, to increase security when counter transports, improve the identification of container transport, and reduce manpower and waste of time, be important technological problems urgently to be resolved hurrily when current container transport dealer imports identification technique in wireless radio frequency.
Summary of the invention
In view of the above problems, the present invention propose a kind of have identify the e-seals of radio frequency identification and a kind of method examined the goods through e-seals, the risk of substitute after the unique code of e-seals can be avoided to be logged more.
For reaching above-mentioned purpose, the present invention proposes a kind of e-seals with many identification radio frequency identifications, comprises a RFID devices, an antenna assembly and an impedance matching circuit.RFID devices comprises at least two radio frequency identification unit, and each radio frequency identification unit respectively in order to provide different individually unique code for identification, and all transmits its other unique code through same group of antenna assembly.Antenna assembly is in order to be electrically connected at radio frequency identification unit, and antenna assembly is in order to receive an identification electromagnetic wave signal, sends unique code to excite radio frequency identification unit by antenna assembly.Impedance matching circuit is arranged between radio frequency identification unit and antenna assembly, in order to adjust the impedance matching value of radio frequency identification unit to antenna assembly, to adjust radio frequency identification unit to send unique code be excited power and feedback power through antenna assembly.
The present invention more proposes a kind of method examined the goods through e-seals, in order to check the goods of a package body inside, wherein this package body has a padlock ring, use for this e-seals through and padlock thereon, and seal this package body, the method comprises the following step: provide an antenna assembly and multiple radio frequency identification unit, be combined with each other as this e-seals through the padlock ring of this package body, wherein respectively between this radio frequency identification unit to this antenna assembly, be set an impedance respectively; According to the numerical value of each this impedance, determine the strength relationship of the unique code signal that each this radio frequency identification unit sends through this antenna assembly, make this e-seals possess the strength relationship of unique code content and unique code signal; Send an identification electromagnetic wave signal with a radio frequency identification reader, send respectively this unique code signal to excite those radio frequency identification unit by this antenna assembly; And the strength relationship of foundation unique code content and unique code signal, differentiate that those radio frequency identification unit send respectively this unique code signal by this antenna assembly and whether meet the unique code content of this e-seals and the strength relationship of unique code signal.
The strength relationship of aforesaid unique code signal comprises: the intensity of those unique code signals intensity that is consistent, those unique code signals has strong and weak difference or those unique code signals have at least one to be set anergy.
The present invention gives e-seals and possesses multiple unique code simultaneously, and through the signal intensity of impedance matching adjustment unique code, through the cooperation of the signal intensity relation of unique code and unique code, in order to differentiate that whether e-seals is replaced.The cooperation of the signal intensity relation of multiple unique code and unique code, adds the difficulty of side record, thus the probability that reduction e-seals is forged.In addition, the configuration of multiple unique code, also can mark the product item of at least one group of unique code as counter content, add customs inspection flow process.
In addition, in the configuration of the present invention through multiple antenna, increase the net sectional area of antenna, also effectively can increase the reading distance of wireless identification reader.
Accompanying drawing explanation
Fig. 1 is in known techniques, the diagrammatic cross-section of e-seals.
Fig. 2 is in first embodiment of the invention, has the diagrammatic cross-section identifying the e-seals of radio frequency identification more.
Fig. 3 is in first embodiment of the invention, the diagrammatic cross-section of latch.
Fig. 4 is in first embodiment of the invention, has the diagrammatic cross-section identifying the e-seals of radio frequency identification more.
Fig. 5 is in first embodiment of the invention, the diagrammatic cross-section of plug housing.
Fig. 6 is in first embodiment of the invention, has the diagrammatic cross-section identifying the e-seals of radio frequency identification more.
Fig. 7 is in second embodiment of the invention, the diagrammatic cross-section of latch.
Fig. 8 is in third embodiment of the invention, the diagrammatic cross-section of plug housing.
Fig. 9 is the process flow diagram of the method that the present invention examines the goods through e-seals.
Symbol description
1 e-seals 100 latch
110 body of rod 111 built-in space
120 insertion end 121 guide ramp
122 opening 130 block ends
140 padlock groove 200 RFID devices
210 first electric connector 220 radio frequency identification unit
150 collets 230 first circuit boards
300 impedance matching circuit 400 plug housings
410 body 420 buckling devices
411 hollow space 412 jacks
421 Button Block 422 spring secures rail to sleepers
423 button hole 500 antenna assemblies
510 second electric connector 520 antennas
521 single-point feed antenna 522 coupled antennas
530 support plate R resistance
Rv variable resistor C electric capacity
900 e-seals 910 latches
920 plug housing 930 radio frequency identification chips
40 antenna assemblies
Embodiment
Refer to shown in " Fig. 2 ", a kind of e-seals 1 with many identification radio frequency identifications disclosed by first embodiment of the invention.This e-seals 1 comprises latch 100, RFID devices 200, impedance matching circuit 300, plug housing 400, antenna assembly 500.
As shown in the figure 3, latch 100 is a steel cylinder shell, and in order to this RFID devices 200 accommodating and impedance matching circuit 300, and the outside of latch 100 can coating insulation material or coating paint vehicle.
As shown in the figure 3, latch 100 comprises the body of rod 110, insertion end 120 and a block end 130.Insertion end 120 is positioned at one end of the body of rod 110, and block end 130 is positioned at the other end of the body of rod 110.The cross section of block end 130 is greater than the cross section of the body of rod 110.
As shown in the figure 3, the leading edge of insertion end 120 forms guide ramp 121, and latch 100 more comprises a padlock groove 140, is formed at the outer peripheral face of insertion end 120.Padlock groove 140 can be continuous annular groove, around the outer peripheral face of insertion end 120, also can be discontinuous concave configuration, is partially formed the outer peripheral face in insertion end 120.
As shown in the figure 3, the body of rod 110 more comprises a built-in space 111, and insertion end 120 is more formed an opening 122, is communicated with the built-in space 111 of this latch 100 inside.
Refer to shown in " Fig. 2 " and " Fig. 3 ", RFID devices 200 comprises one first electric connector 210 and at least two radio frequency identification unit 220, each radio frequency identification unit 220 respectively in order to provide not different unique code for identification, and all transmits its other unique code through same group of antenna assembly 500.
As shown in figure 4, first embodiment of the invention illustrates using two radio frequency identification unit 220 as embodiment, but in fact the quantity of radio frequency identification unit 220 can be more than two.
As shown in the figure 3, latch 100 more comprises collets 150, plugs the opening 122 in insertion end 120 in modes such as close-fittings, and collets 150 itself more comprise one places hole.First electric connector 210 places hole by this, and is arranged in this collets 150, makes the first electric connector 210 be fixed in the opening 122 of insertion end 120, and the first electric connector 210 is not contacted with latch 100, and keep mutual insulating.First electric connector 210 is in order to be connected to each other with one second electric connector 510, use and make those radio frequency identification unit 220 be electrically connected at antenna assembly 500, send respectively this unique code to excite those radio frequency identification unit 220 by this antenna assembly 500.
As shown in the figure 3, radio frequency identification unit 220 is arranged in the built-in space 111 of the body of rod 110, and is electrically connected at the first electric connector 210 respectively.Those radio frequency identification unit 220 do not have a unique code, use for reading and identify.One embodiment of radio frequency identification unit 220 is radio frequency identification (RFID) chip, but not as limit.
As shown in the figure 3, RFID devices 200 more comprises a first circuit board 230, two radio frequency identification unit 220 and is arranged on first circuit board 230, and the first electric connector 210 is fixed on the edge of first circuit board 230 with welding manner.
As shown in the figure 3, shown in, impedance matching circuit 300 is arranged between those radio frequency identification unit 220 and antenna assembly 500, in order to adjust the impedance matching value of each radio frequency identification unit 220 to antenna assembly 500, to adjust each radio frequency identification unit 220 to send unique code be excited power and feedback power through antenna assembly 500.
As shown in the figure 3, impedance matching circuit 300 can layout (Layout) on aforesaid first circuit board 230, also can connect with wire separately.In embodiment, impedance matching circuit 300 connects two radio frequency identification unit 220 and the first electric connectors 210, thus the impedance matching value between adjustment two radio frequency identification unit 220 to the first electric connectors 210, thus the impedance matching value adjusted between multiple radio frequency identification unit 220, make each radio frequency identification unit 220 have different emissive powers, thus produce master slave relation.
As shown in the figure 3, in embodiment, impedance matching circuit 300 comprises multiple impedance unit, correspond respectively to those radio frequency identification unit 220 one of them, in order to adjustment respectively this radio frequency identification unit to the impedance matching value of this antenna assembly.。Each impedance unit comprises an a resistance R and electric capacity C.Wherein, electric capacity C is in parallel with corresponding radio frequency identification unit 220, then is electrically connected at the first electric connector 210 through resistance R, thus is electrically connected at antenna assembly 500 through the first electric connector 210 and the second electric connector 510.Aforesaid impedance matching circuit 300 is only an illustration, and is not used to the embodiment limiting impedance matching circuit 300.It should be noted that resistance R can be variable resistor, use and cause e-seals 1 to have different impedance matching values.Said impedance unit comprises a resistance R and an electric capacity C is only illustration, in fact each this impedance unit can comprise the resistance R being connected in series in this antenna assembly 500, the inductance L being connected in series in this antenna assembly, be connected in parallel in the electric capacity C of this antenna assembly 500, or the combination in any of aforementioned components.
Consult shown in " Fig. 2 " and " Fig. 5 ", plug housing 400 comprises body 410 and a buckling device 420.
As shown in " Fig. 5 ", body 410 inside forms a hollow space 411, and plug housing 400 has more a jack 412, is formed on this body 410, to connect this hollow space 411, enters hollow space 411 with inserting for this insertion end 120.Buckling device 420 is arranged in the hollow space 411 of body 410, and corresponds to jack 412, in order to fasten the insertion end 120 of this latch 100, is fastened on plug housing 400 to make latch 100.
As shown in " Fig. 5 ", the insertion end 120 of jack 412 for latch 100 is inserted in plug housing 400, and make insertion end 120 fasten by buckling device 420, make latch 100 be incorporated into plug housing 400 and cannot be separated.When latch 100 inserts plug housing 400 and fastened, those radio frequency identification unit 220 are electrically connected at antenna assembly 500, use and are excited and send unique code signal.
In addition, when the insertion end 120 of latch 100 is inserted in plug housing 400, in radio frequency identification unit 220, one of them is arranged in plug housing 400, when latch 100 is cut off, at least one radio frequency identification unit 220 still can be kept to stay in plug housing 400.
As shown in " Fig. 5 ", in an embodiment, buckling device 420 comprises Button Block 421 and a spring secures rail to sleeper 422.Wherein Button Block 421 has the button hole 423 that penetrates these Button Block 421 both sides, and button hole 423 corresponds to the jack 412 of body 410, and spring secures rail to sleeper 422 is embedded at the inwall of button hole 423, in order to embed the padlock groove 140 of latch 100, make insertion end 120 fasten by buckling device 420.
As shown in " Fig. 3 ", " Fig. 4 ", " Fig. 5 ", after the insertion end 120 of latch 100 inserts jack 412, insertion end 120 can continue to enter in button hole 423.Wherein, guide ramp 121 contributes to guiding insertion end 120 sequentially through jack 412 and button hole 423.After insertion end 120 enters button hole 423, spring secures rail to sleeper 422 embeds the padlock groove 140 of latch 100, make insertion end 120 fasten by buckling device 420.Simultaneously; Button Block 421 usually can adopt single derby to attack hole and make; its anti-shearing force is high; and insertion end 120 is when being fixed in button hole 423; meaning person has a radio frequency identification unit 220 to be arranged in button hole 423; and protected by Button Block 421, reduce the probability that this radio frequency identification unit 220 is destroyed because latch 100 is sheared.
Consult shown in " Fig. 5 ", " Fig. 6 ", antenna assembly 500 is arranged in plug housing 400.
As shown in " Fig. 6 ", when the insertion end 120 of latch 100 is inserted, antenna assembly 500 is electrically connected at the radio frequency identification unit 220 of RFID devices 200, in order to receive an identification electromagnetic wave signal, send respectively this unique code to excite those radio frequency identification unit 220 by this antenna assembly 500.Identification electromagnetic wave signal sent by a wireless radio frequency reader, those unique codes can read by wireless radio frequency reader, and reach identification effect.As previously mentioned, when latch 100 is cut off, the insertion end 120 of latch 100 still keep the state that fastens by buckling device 420, and at least one radio frequency identification unit 220 is still along with insertion end 120 is retained in latch 100, makes it still can possess the function providing unique code through antenna assembly 500.
Consult shown in " Fig. 5 ", the specific embodiment of antenna assembly 500 comprises one second electric connector 510 and at least one antenna 520, is arranged in the hollow space 411 of body 410.Wherein, the second electric connector 510 corresponds to button hole 423 and arranges, such as, be positioned at button hole 423, or be positioned at jack 412 by button hole 423; After insertion end 120 enters button hole 423, the first electric connector 210 is incorporated into the second electric connector 510; Aforementioned first electric connector 210 and the second electric connector 510 can be the combination of terminal and socket.
Antenna 520 is electrically connected at the second electric connector 510, use through the first electric connector 210 and the second electric connector 510, and be electrically connected at the radio frequency identification unit 220 of RFID devices 200, use the unique code transmitted entrained by radio frequency identification unit 220.
As shown in " Fig. 5 ", in the specific embodiment of antenna assembly 500, antenna assembly 500 more comprises a support plate 530, such as pcb board, wherein antenna 520 is arranged on support plate 530, and the second electric connector 510 is arranged at the edge of support plate 530, and is electrically connected at antenna 520.
When the identification electromagnetic wave signal that the radio frequency identification reader of outside is launched arrives in the range of receiving having and identify the e-seals 1 of radio frequency identification more, have difference on power because impedance matching circuit 300 makes to receive between radio frequency identification unit 220 different in latch 100 identification electromagnetic wave signal, aforesaid difference will cause three kinds of results:
One, receive identification electromagnetic wave signal according to distributing there is difference on power, the identification signal of replying its unique code cannot be produced without enough energy excitations by producing a wherein radio frequency identification unit 220.
Although two, the radio frequency identification unit 220 of the different unique code of more than two or two and tool all has enough energy to excite and to reply, impedance distributes and causes the wireless signal power of reply different, then just have the difference of Received signal strength at reader end.
Three, the distance between radio frequency identification reader and e-seals 1 is for change, and move closer to e-seals 1, the identification signal making each radio frequency identification unit 220 reply its unique code along with distance close to just one by one by radio frequency identification reader, that is have the regular hour sequentially the opportunity that each radio frequency identification unit 220 identification signal of replying its unique code occurs.
Actual when using, when latch 100 is through the clasp of the door of counter and bonded truck, and make insertion end 120 insert latch 100 400, and fasten by buckling device 420.Now there is the radio frequency identification unit 220 in the e-seals 1 identifying radio frequency identification and antenna assembly 500 conducting mutually by the combination because of the first electric connector 210 and the second electric connector 510 more, form radio frequency identification system.
When the radio frequency identification reader emitting identification electromagnetic wave signal of outside, the antenna assembly 500 with the e-seals 1 of many identification radio frequency identifications can receive this identification electromagnetic wave signal and be sent to radio frequency identification unit 220, use and excite radio frequency identification unit 220, those radio frequency identification unit 220 are made to send the electric wave signal of unique code through antenna assembly 500, can as the judgement of counter and bonded truck transportation safety by these two groups of unique code signal content integrity degrees.
In addition, under the occasion possessing multiple radio frequency identification unit 220, at least one radio frequency identification unit 220 can mark the content of counter through unique code, namely the content of counter is used as unique code.When obtaining two groups of unique codes, be used for by one group of unique code differentiating that whether e-seals 1 is once replaced, another unique code can work and directly judge the product item of the content of counter.
As shown in " Fig. 7 ", the e-seals 1 with many identification radio frequency identifications of second embodiment of the invention comprises latch 100, RFID devices 200, impedance matching circuit 300.
Wherein, impedance matching circuit 300 comprises multiple impedance unit, corresponding to each radio frequency identification unit 220.Each impedance unit comprises an a variable resistor Rv and electric capacity C.Variable resistor Rv makes each impedance unit be supplied to radio frequency identification unit 220 for variability, its impedance matching value produces power division variation effect because of rate variance, when adjusting impedance matching value and making two groups of impedance matching difference in size very large, namely this radio frequency identification unit 220 that wherein impedance matching value is very large cannot be excited and cannot respond the radio-frequency discriminating signal of reader, and vice versa.
The distribution of the radio-frequency discriminating signal power of its response reader is represented because of two groups of impedance matching value differences, therefore in a second embodiment, two groups of impedance matching values are adjusted to the identical and appropriate value of indifference of size, then these two groups of radio frequency identification unit 220 all can respond its other unique code, and receive this two groups of radio frequency identification unit 220 signals by reader, in other words, when side record is forged, the generation because of two groups of unique codes is at a loss as to what to do, generation lures mark effect, thus, can therefore compare with former design architecture and judge its security and recorded by side to copy.Illustrate further, in the present embodiment, produce different reading results by the impedance matching value of radio frequency identification unit 220 in motor-driven adjustment latch 100 by reader end, and reach the application of high security radio frequency identification electronic lock and obscure the antifalse effect recorded side.
Thus, produce the method for impedance variation because impedance matching is adjustable pattern, and produce unique code receiving intensity variation effect, and reach and lure mark and obscure side record effect, use and reach high security and the good purpose of design of antifalse effect.
As previously mentioned, when other people attempt records unique code with radio frequency identification reader side, multiple unique code will be obtained simultaneously, side record person is caused to puzzle for multiple unique code, and take for its read error, and cannot determine to use which side record code to copy the unique code of e-seals 1 of the present invention.Or, multiple unique code simultaneously for identification e-seals 1, but has the relation of signal power, and side record person only can obtain each unique code, but the relation of signal power is not carried out merely side record unique code and can be obtained, and therefore further increases the difficulty of spurious copy invention e-seals 1.
As shown in " Fig. 8 ", the another kind of plug housing 400 of proposition of third embodiment of the invention and the combination of antenna assembly 500, be applied to the e-seals with many identification radio frequency identifications that various embodiments of the present invention disclose.
Wherein, the quantity of the antenna of antenna assembly 500 can be multiple.And more specifically, each antenna can be multi-form antenna, the such as combination of a single-point feed antenna 521 and a coupled antenna 522, wherein single-point feed antenna 521 is electrically connected at the second electric connector 510, and coupled antenna 522 is then coupled in single-point feed antenna 521.
In the 3rd embodiment, multiple antenna will improve the net sectional area of transmitting/receiving wireless electric wave signal, and make the reading of the e-seals 1 with many identification radio frequency identifications distant, and promote the resolution (reducing the probability that read error maybe cannot read) of radio frequency identification unit 220.
As shown in " Fig. 9 ", be a kind of method examined the goods through e-seals provided by the invention, in order to check the goods of a package body inside, this package body has a padlock ring, use for this e-seals 1 through and padlock thereon, and seal this package body.Described package body can be the container of a counter or a bonded truck, and padlock is also in order to pin the door of counter or container.
The method examined the goods through e-seals comprises the following step.
One antenna assembly 500 and multiple radio frequency identification unit 220 are provided, are combined with each other as this e-seals 1 through the padlock ring of package body.As shown in step Step 110.Wherein respectively this radio frequency identification unit is set an impedance respectively between this antenna assembly 500.
According to the numerical value of respectively this impedance, determine the strength relationship of the unique code signal that each radio frequency identification unit 200 sends through antenna assembly 500, make e-seals 1 possess the strength relationship of unique code content and unique code signal, as shown in step Step 120.
An identification electromagnetic wave signal is sent with a radio frequency identification reader, to excite radio frequency identification unit 220 to send unique code signal by antenna assembly 500, Step 130.
The strength relationship of foundation unique code content and unique code signal, differentiates that radio frequency identification unit 220 sends unique code signal by antenna assembly 500 and whether meets the unique code content of e-seals 1 and the strength relationship of unique code signal, as step Step 140.
The strength relationship of aforesaid unique code signal comprises: the intensity of those unique code signals intensity that is consistent, those unique code signals has strong and weak difference or those unique code signals have at least one to be set anergy.
Because the record of simple side does not have the strength relationship that way obtains unique code signal, therefore multiple unique code can increase and lures mark effect, and benefit is obscured in offside record generation, moreover also can the impedance of motor-driven adjustment two radio frequency identification unit 220, and increase the strength relationship change of unique code signal.That is comprise two groups of anti-matching values of group at least in latch by adjustment one RFID devices, the strength relationship of at least two unique code signals can be changed, further increase the difficulty of spurious copy invention e-seals 1.
In addition, the unique code of two principals and subordinates can intersect respectively and loads security information and inventory information.Except can confirming that e-seals 1 is not substitute, also can be directly acquainted with the kinds of goods content in counter or bonded truck container.
Claims (10)
1. there is the e-seals identifying radio frequency identification more, it is characterized in that, comprise:
One RFID devices, comprises at least two radio frequency identification unit, and those radio frequency identification unit are respectively in order to provide unique code for identification;
One antenna assembly, in order to be electrically connected at those radio frequency identification unit; This antenna assembly, in order to receive an identification electromagnetic wave signal, sends those unique codes to excite those radio frequency identification unit by this antenna assembly; And
One impedance matching circuit, comprise multiple impedance unit, those impedance units are arranged between those radio frequency identification unit and this antenna assembly respectively, and correspond to those radio frequency identification unit, those impedance units in order to adjustment respectively this radio frequency identification unit to the impedance matching value of this antenna assembly, to adjust each this radio frequency identification unit to send this unique code be excited power and feedback power through this antenna assembly.
2. according to claim 1 have the e-seals identifying radio frequency identification more, it is characterized in that, more comprise:
One latch, in order to this RFID devices accommodating and this impedance matching circuit, and this latch comprises a body of rod, an insertion end and a block end, wherein this insertion end is positioned at one end of this body of rod, and this block end is positioned at the other end of this body of rod, and the cross section of this block end is greater than the cross section of this body of rod; And
One plug housing, comprise a body and a buckling device, wherein this body interior forms a hollow space, and this plug housing has more a jack, is formed on this body, enters this hollow space with inserting for this insertion end; This buckling device is arranged in the hollow space of this body, and corresponds to this jack, in order to fasten the insertion end of this latch, is fastened on plug housing to make this latch;
When wherein this latch inserts this plug housing and fastened, those radio frequency identification unit are electrically connected at this antenna assembly.
3. according to claim 2 have the e-seals identifying radio frequency identification more, and it is characterized in that, this latch more comprises a padlock groove, is formed at the outer peripheral face of insertion end.
4. according to claim 2 have the e-seals identifying radio frequency identification more, it is characterized in that, this insertion end more forms an opening, be communicated with the built-in space of this latch inside.
5. according to claim 4 have the e-seals identifying radio frequency identification more, it is characterized in that,
This latch more comprises collets, plugs the opening in this insertion end; And
This radio frequency identification device more comprises one first electric connector, is electrically connected at those radio frequency identification unit, and is arranged in this collets.
6. according to claim 1 have the e-seals identifying radio frequency identification more, and it is characterized in that, the matched impedance that respectively those impedance units are corresponding different respectively, causes this strip of paper used for sealing to have different impedance matching values.
7. according to claim 1 have the e-seals identifying radio frequency identification more, it is characterized in that, each this impedance unit comprises the resistance being connected in series in this antenna assembly, the inductance being connected in series in this antenna assembly, is connected in parallel in the electric capacity of this antenna assembly, or the combination in any of aforementioned components, this aforementioned components comprises this resistance, this inductance and this electric capacity.
8. according to claim 1 have the e-seals identifying radio frequency identification more, it is characterized in that, this antenna assembly comprises a single-point feed antenna and a coupled antenna, this single-point feed antenna is in order to be electrically connected at those radio frequency identification unit, and this coupled antenna is coupled in this single-point feed antenna.
9., through the method that e-seals examines the goods, in order to check the goods of a package body inside, it is characterized in that, this package body has a padlock ring, use for this e-seals through and padlock thereon, and seal this package body, the method comprises the following step:
One antenna assembly and multiple radio frequency identification unit are provided, are combined with each other as this e-seals through the padlock ring of this package body, wherein respectively between this radio frequency identification unit to this antenna assembly, are set an impedance respectively;
According to the numerical value of each this impedance, determine the strength relationship of the unique code signal that each this radio frequency identification unit sends through this antenna assembly, make this e-seals possess the strength relationship of unique code content and unique code signal;
Send an identification electromagnetic wave signal with a radio frequency identification reader, send respectively this unique code signal to excite those radio frequency identification unit by this antenna assembly; And
The strength relationship of foundation unique code content and unique code signal, differentiates that those radio frequency identification unit send respectively this unique code signal by this antenna assembly and whether meet the unique code content of this e-seals and the strength relationship of unique code signal.
10. the method examined the goods through e-seals according to claim 9, it is characterized in that, the strength relationship of this unique code signal comprises: the intensity of those unique code signals intensity that is consistent, those unique code signals has strong and weak difference or those unique code signals have at least one to be set anergy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100121394A TWI418694B (en) | 2011-06-20 | 2011-06-20 | Electronic seals with multi-identification radio frequency identification and means for inspecting goods through electronic seals |
| TW100121394 | 2011-06-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102842054A CN102842054A (en) | 2012-12-26 |
| CN102842054B true CN102842054B (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110265246.8A Active CN102842054B (en) | 2011-06-20 | 2011-09-08 | Electronic seal and method for checking goods through electronic seal |
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| Country | Link |
|---|---|
| CN (1) | CN102842054B (en) |
| TW (1) | TWI418694B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2688298C2 (en) | 2014-05-29 | 2019-05-21 | Итан ХИЛСЛИ | Delivery tracking system with a seal |
| CN108205860A (en) * | 2016-12-16 | 2018-06-26 | 上海仪电（集团）有限公司中央研究院 | Burglary-resisting system |
| CN112825150B (en) * | 2019-11-20 | 2024-02-23 | 陈志权 | Multi-frequency electronic seal |
| TWI750547B (en) * | 2019-12-03 | 2021-12-21 | 國家中山科學研究院 | Near field communication electronic plug structure |
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| CN1830731A (en) * | 2004-09-23 | 2006-09-13 | 林连丰 | Electronic seal |
| CN201142169Y (en) * | 2007-09-13 | 2008-10-29 | 艾生有限公司 | Electronic sealing strip |
| TWM396314U (en) * | 2010-09-06 | 2011-01-11 | Chung Shan Inst Of Science | RFID passive type electric lock with multiple safety designs |
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| US7528719B2 (en) * | 2005-12-15 | 2009-05-05 | Motorola, Inc. | Asset sealing and tracking system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830731A (en) * | 2004-09-23 | 2006-09-13 | 林连丰 | Electronic seal |
| CN201142169Y (en) * | 2007-09-13 | 2008-10-29 | 艾生有限公司 | Electronic sealing strip |
| TWM396314U (en) * | 2010-09-06 | 2011-01-11 | Chung Shan Inst Of Science | RFID passive type electric lock with multiple safety designs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102842054A (en) | 2012-12-26 |
| TWI418694B (en) | 2013-12-11 |
| TW201300619A (en) | 2013-01-01 |
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