CN110826677B - Electronic seal - Google Patents
Electronic seal Download PDFInfo
- Publication number
- CN110826677B CN110826677B CN201810920818.3A CN201810920818A CN110826677B CN 110826677 B CN110826677 B CN 110826677B CN 201810920818 A CN201810920818 A CN 201810920818A CN 110826677 B CN110826677 B CN 110826677B
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- Prior art keywords
- hole
- far
- conductor
- field antenna
- pin
- 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.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
Abstract
The invention discloses an electronic seal, which at least comprises a plug and a plug seat. The plug comprises a conductor and a circuit board; the conductor is provided with a first buckle, a containing hole penetrating up and down, and an upper cover for closing the top end of the containing hole; the circuit board is hung in the holding hole, and is provided with an RFID chip, an upper contact matched with the upper cover and a lower contact protruding out of the bottom end of the holding hole, and the RFID chip is connected with the first pin and the second pin, so that the RFID chip forms a first far-field antenna loop through the first pin, the upper contact, the upper cover and the conductor. The bolt seat is provided with an elastic device and an internal antenna, is also provided with a jack for inserting the lower part of the conductor, is provided with a second buckle for positioning the first buckle, and is used for controlling the elastic device to provide precompression for the internal antenna and the lower contact to be electrically connected so as to start the RFID chip and the internal antenna to form a second far-field antenna loop, synchronously start the first far-field antenna loop and cut off the first far-field antenna loop and the second far-field antenna loop when the upper cover is worn.
Description
Technical Field
The invention relates to an electronic seal, which is specially used for the technical field that a thief can completely cut off electromagnetic wave output when the electronic seal is damaged.
Background
The conventional U.S. patent 9508271, electronic bolt seal, discloses a better reading distance, and a near field antenna (Near Field Aantenna) and a far field antenna (Far Field Antenna) are disposed, as shown in fig. 1, the circuit board 90 of the patent is provided with an upper contact 91, a lower contact 92 and an RFID chip 93, a wire 94 is bridged between the upper contact 91 and the RFID chip 93, a U-shaped near field antenna 95 is disposed between the lower contact 92 and the RFID chip 93, the RFID chip 93 is bridged at the feeding portion of the near field antenna 95 for normally closing the starting near field antenna 95, and the far field antenna loop is formed when the upper contact 91 is electrically connected with a conductor and the lower contact 92 is electrically connected with an antenna inside a socket.
In this patent, after the thief grinds the top end of the plug, the circuit board 90 cuts off the far-field antenna loop, but the near-field antenna loop can still continuously emit electromagnetic waves, which may cause misjudgment of the customs identification host.
Disclosure of Invention
The invention aims to provide an electronic seal capable of overcoming the defect of US 9508271, which can truly cut off all electromagnetic wave output when a thief grinds the top end of a plug to detach the electronic seal from a container, so that the misjudgment problem of continuous operation of a near-field antenna loop of US 9508271 can be solved.
Based on the above, the present invention mainly adopts the following technical means to achieve the above-mentioned objects.
An electronic seal, comprising at least: a plug, which is composed of a conductor and a circuit board; the conductor is provided with a containing hole with a downward opening, the top end of the containing hole is closed by an upper cover, and the lower part of the conductor is provided with a first buckle; the circuit board is arranged in the accommodating hole and is provided with an RFID chip, an upper contact matched with the upper cover and a lower contact protruding out of the bottom end of the accommodating hole, the RFID chip is connected with a first pin and a second pin, the RFID chip forms a first far-field antenna loop through the first pin, the upper contact, the upper cover and a conductor, and the second pin is electrically connected with the lower contact; the plug seat is provided with an elastic device, an internal antenna, an inserting hole for inserting the lower part of the conductor and a second buckle for positioning the first buckle, the elastic device is controlled to provide pre-pressure for the internal antenna and the lower contact to be electrically connected so as to start the RFID chip and the internal antenna to form a second far-field antenna loop, synchronously start the first far-field antenna loop and simultaneously cut off the first far-field antenna loop and the second far-field antenna loop when the upper cover is separated.
Further, the first far-field antenna loop and the second far-field antenna loop form an asymmetric antenna configuration, and the second far-field antenna loop power is controlled to be greater than the first far-field antenna loop power, so that when the conductor is sheared, the first far-field antenna loop and the second far-field antenna loop can be cut off simultaneously.
Further, the first and second pins of the RFID chip maintain a normally open contact.
Further, the elastic device is composed of a first unit and a second unit; when the first and second far-field antenna loops are activated, the first unit is caused to provide positive pre-compression required for the electrical connection of the internal antenna and the lower contact, but when the upper cover is worn out, the second unit is caused to provide negative pre-compression required for the detachment of the lower contact from the internal antenna.
Further, the second unit is provided with a reed inside the bolt seat, the reed is located between the upper part of the internal antenna and the lower part of the jack, and a guide hole is penetrated, when the first buckle and the second buckle are positioned, the guide hole can pass through the lower contact point, but can not pass through the bottom end of the conductor, so that the bottom end of the conductor can push the reed to deform, and a negative pre-compression force is provided for the bottom end of the conductor.
Further, the bolt seat is formed by combining a first shell seat and a second shell seat, then placing the first shell seat and the second shell seat into a hollow shell, and closing the bottom end of the shell by a bottom cover; the upper part of the bolt seat is provided with a jack for inserting and closing the lower part of the conductor, and the reed is integrally formed on the first shell seat.
Further, the conductor is provided with a sinking hole with an inner diameter larger than that of the hole at the bottom edge of the containing hole; the circuit board is arranged in the accommodating hole through an insulating plate, the bottom end of the insulating plate is provided with a second buckling part, the second buckling part is provided with a slot for a lower contact to pass through from top to bottom, and when the upper contact is abutted against the upper cover, the second buckling part is positioned at a position protruding out of the bottom end of the sinking cavity, but after the upper cover is separated, the second unit can provide a part of negative pre-pressing force for the bottom end of the conductor, so that the sinking cavity can limit the second buckling part.
Furthermore, the circuit board is bridged with a first wiring between the first pin and the upper contact point, and a second wiring is arranged between the second pin and the lower contact point.
The circuit board is provided with a first surface and a second surface which are opposite to each other, a first hole and a second hole which penetrate through the first surface and the second surface are arranged at intervals, the RFID chip is arranged on the first surface, a first pin is positioned in the first hole, a second pin is positioned in the second hole, a first wiring is arranged between the first pin and an upper contact point on the first surface, and a second wiring is arranged between a lower contact point and the second pin on the second surface; the circuit board is arranged in the accommodating hole through an insulating plate, and the insulating plate is arranged on the second surface of the circuit board in a group mode and is used for isolating the second wiring.
Further, the conductor is provided with a head hole with an inner diameter larger than that of the hole at the Rong Kongding edge, and a cover hole with an inner diameter larger than that of the head hole is arranged at the top edge of the head hole, and the cover hole is closed by a cover; the circuit board is arranged in the accommodating hole through an insulating plate, the insulating plate is arranged on the second surface of the circuit board in a group mode and used for isolating the second wiring, the insulating plate is provided with a first fastener which can be arranged in the head hole, the first fastener at least comprises a spring plate which extends downwards, the bottom end of the spring plate abuts against the bottom end of the head hole, and the upper contact is driven to abut against the upper cover.
After the technical means is adopted, through the structural design of the plug and the socket, the plug can be sequentially inserted into the plug hole and the plug seat of the container door plug from top to bottom to lock the container, so that a customs identification host can judge whether the container is normally opened, when a thief breaks the plug to a certain extent by using a grinder, the upper cover can be separated, the first far-field antenna loop is interrupted, in addition, the grinder can generate high temperature in the process of breaking the upper cover, a circuit board is damaged, the lower contact cannot be electrically connected with the internal antenna of the plug seat under the condition that the elastic device applies negative pre-pressure to the plug, and the second far-field antenna loop is completely cut off, so that the misjudgment problem of the US 9508271 patent can be removed.
Drawings
Fig. 1 is a schematic diagram of a circuit board of US 9508271 patent.
FIG. 2 is an exploded view of the present invention.
Fig. 3 and 4 are exploded views of the circuit board and the upper pre-pressing portion according to the present invention.
FIG. 5 is a schematic cross-sectional view of a latch according to the present invention.
FIG. 6 is a schematic view of the relative positions of the plug, container door plug, and plug seat of the present invention.
Fig. 7 is a schematic cross-sectional view of fig. 6.
Fig. 8 is a schematic sectional view of the first and second buckles of the present invention after being positioned.
FIG. 9 is a schematic sectional view of the assembly of the present invention after a thief grinds the top end of the plug.
A plug
10 conductor 11 shaft
12 cap 13 holding hole
13A head acupoint 13B cover acupoint
13C sinking hole 14 collar
15 first fastener of upper cover 16
17 insulating sleeve
20 first side of circuit board 21
22 second face 231 first hole
232 second holes 233 third holes
24 upper contact 25 lower contact
26 First pin of RFID chip 261
262 second leg 271 first wiring
272 second trace 273 impedance matching region
30 upper pre-pressing part 31 insulating board
311 connecting post 32 first fastener
321. 322, 323 spring 33 second fastening part
331 guide surface 332 slot
B bolt seat
41 first housing seat 42 second housing seat
43 outer casing 44 bottom cover
45 jack
50 elastic means 51 first unit
511-step hole 512 slider
513 spring 52 second unit
521 reed 522 guide hole
60 internal antenna
70 second snap-fit 71 ring groove
72 clasp
C1 bolt hole of C door bolt
The conventional method is as follows:
90 contacts on circuit board 91
92 drop 93RFID wafer
94 metal traces 95 near field antenna.
Description of the embodiments
Referring to fig. 6 and 9, the electronic seal of the present invention is composed of a plug a and a plug seat B, wherein the plug a can be sequentially inserted into a plug hole C1 and a plug seat B of a container door plug C from top to bottom to lock a container, so that a customs identification host can determine whether the container is normally opened.
Referring to fig. 2 to 7, the plug a is mainly composed of a metal conductor 10, a circuit board 20 and an upper pre-pressing portion 30; wherein;
the conductor 10 has a shaft 11, a cap 12 radially expanding outwards on the top of the shaft 11, an axially penetrating hole 13, a collar 14 abutting against the bottom of the cap 12, the diameter of the cap 12 is enough to abut against the bolt C, the top edge of the hole 13 has a larger diameter head hole 13A, the top edge of the head hole 13A has a larger diameter cover hole 13B, the bottom edge of the hole 13 is provided with a larger diameter sink hole 13C, the cover hole 13B is provided with a conductive upper cover 15 for sealing, the shaft 11 is provided with a first buckle 16 outside the lower part Zhou Huanao, and the periphery of the upper part of the conductor 10 is provided with an insulating sleeve 17 for covering the collar 14 and the upper cover 15;
the circuit board 20 is suspended in the accommodating hole 13 by the upper pre-pressing portion 30, and has a first surface 21, a second surface 22, a first hole 231, a second hole 232 and a plurality of third holes 233 passing through the first surface 21 and the second surface 22, wherein the top end of the circuit board 20 is further provided with an upper contact 24, the bottom end is provided with a lower contact 25, the first surface 21 of the circuit board 20 is further provided with an RFID chip 26, the RFID chip 26 has a first foot 261 capable of being positioned in the first hole 231, and a second foot 262 positioned in the second hole 232, the first foot 261 and the second foot 262 of the RFID chip 26 keep a normally Open contact (Normal Open), the first surface 21 is bridged with a first trace 271 between the first foot 261 and the upper contact 23, the second surface 22 is bridged with a second trace 272 between the lower contact 25 and the second foot 262, and the lower half of the second trace is provided with an impedance matching area 273 with an increased area, the RFID chip 26 is bridged with the first trace 271, the second trace 272, and the first trace 272 and the second trace 272 are not conducted with each other;
the upper pre-pressing part 30 is composed of an insulating plate 31, the insulating plate 31 is provided with a connecting column 311 for installing a third hole 233 of the circuit board 20, the insulating plate 31 is flatly attached to the second surface 22 of the circuit board 20, the inside and outside of the second wire 272 are isolated, the second wire 272 cannot be short-circuited with the conductor 10, and the insulating plate 31 is provided with a first fastener 32 capable of being hung on the head hole 13A and a second fastener 33 capable of entering and exiting the sink hole 13C; the first fastener 32 is forked and extends downwards to form elastic sheets 321, 322 and 323 abutting against the bottom end of the joint hole 13A, so as to drive the upper contact 24 to abut against the bottom surface of the upper cover 15, so that the conductor 10, the upper cover 15, the upper contact 23, the first wiring 271, the first pin 261 and the RFID chip 26 form a first far-field antenna loop which cannot output power yet, and meanwhile, the lower contact 25 is positioned at a position protruding downwards from the sinking hole 13C; referring to fig. 2, 3, 4, 8 and 9, the second fastening portion 33 is radially protruded at the bottom end of the insulating plate 31, the second fastening portion 33 has a guiding surface 331 with a downward tapered outer diameter, and has a slot 332 penetrating up and down, the slot 332 is provided for the circuit board 20 to pass through, the lower contact 25 slightly protrudes from the bottom surface of the second fastening portion 33, the outer diameter of the top of the second fastening portion 33 is between the sink 13C and the hole diameter of the hole 13, and when the upper contact 24 is controlled to electrically conduct the bottom surface of the upper cover 15, the lower portion of the second fastening portion 33 protrudes from the bottom end of the sink 13C, and when the upper cover 15 is separated, the first fastening portion 32 is released to actuate the top of the second fastening portion 33 to slide upwards along the sink 13C, so that the insulating plate 31 and the circuit board 20 cannot be pulled out from the top end of the hole 13, and the lower contact 25 is further linked to be retracted upwards by a distance, thereby synchronously cutting off the second trace 272, the RFID chip 26 and a second far-field antenna loop formed by the internal antenna 60;
the bolt seat B is formed by combining a first shell seat 41 and a second shell seat 42, then placing the first shell seat and the second shell seat into a shell 43, and closing the bottom end of the shell 43 by a bottom cover 44; the upper part of the bolt seat B is provided with a jack 45 for inserting the lower part of the conductor 10, and the inside of the bolt seat B is provided with an elastic device 50 and an internal antenna 60; the elastic device 50 is composed of a first unit 51 and a second unit 52, wherein the first unit 51 comprises a stepped hole 511, a sliding block 512 and a spring 513, the stepped hole 511 is coaxially connected under the jack 45, the sliding block 512 can slide along the stepped hole 511 from top dead center to bottom dead center, the spring 513 is installed between the bottom end of the sliding block 512 and the bottom end of the stepped hole 511 to push the sliding block 512 to be positioned at the top dead center, the internal antenna 60 is combined with the top end and the periphery of the sliding block 512, the second unit 52 is integrally formed with a reed 521 on the first housing 41, the reed 521 is obliquely arranged between the upper side of the sliding block 512 and the lower side of the jack 45 and penetrates through a guide hole 522, when the jack 45 is inserted into the lower part of the conductor 10, the guide hole 522 can correspondingly pass through the lower contact 25 of the plug A, and the guide surface 331 of the second buckle 33 can not pass through the guide hole 522, so that the reed 521 can deform to provide negative pre-pressing force to the plug A;
the bolt seat B is further provided with a second buckle 70, the second buckle 70 radially expands a ring groove 71 outside the jack 45, the ring groove 71 is provided with a retaining ring 72, when the bottom end of the bolt a is sequentially inserted into the bolt hole C1 and the jack 45 from top to bottom, the lower contact 25 is forced to move the internal antenna 60 and the sliding block 512 downwards by a preset stroke through the guide hole 522, then the first buckle 16 is positioned at the second buckle 70, so that the electronic seal can be operated to lock the container bolt C, at this moment, the first unit 51 can provide a forward precompression for the internal antenna 60 and the lower contact 25 to be electrically connected, the RFID chip 26 and the internal antenna 60 form a second far-field antenna loop, so that the first far-field antenna loop and the second far-field antenna loop can synchronously start receiving and transmitting identification electromagnetic waves, and automatic management of a customs identification host is provided; furthermore, the aforementioned second unit 52 may exert a negative pre-compression on plug a before the first clasp 16 is positioned at the second clasp 70;
as shown in fig. 8 and 9, when a thief grinds the cap 12 of the bolt a to a diameter smaller than the bolt hole C1 by using a grinder, the upper cover 15 is separated, so as to interrupt the first far-field antenna circuit, and in addition, a high temperature is generated during the process of damaging the upper cover 15 by using the grinder, so as to damage the elasticity and shape of the first fastener 32, and under the negative pre-pressure applied to the bolt a by the second unit 52, the lower contact 25 is ensured to be unable to be electrically connected with the internal antenna 60 of the bolt seat B, so as to completely cut off the second far-field antenna circuit, thereby eliminating the misjudgment problem of the US 9508271 patent, and further, the first far-field antenna circuit and the second far-field antenna circuit are formed into an asymmetric antenna configuration, and the output power of the second far-field antenna circuit is controlled to be larger than that of the first far-field antenna circuit, so that when the conductor 10 is cut off, the first far-field antenna circuit and the second far-field antenna circuit are also cut off.
Claims (10)
1. An electronic seal, comprising at least:
a plug, which is composed of a conductor and a circuit board; the conductor is provided with a containing hole with a downward opening, the top end of the containing hole is closed by an upper cover, and the lower part of the conductor is provided with a first buckle; the circuit board is arranged in the accommodating hole and is provided with an RFID chip, an upper contact matched with the upper cover and a lower contact protruding out of the bottom end of the accommodating hole, the RFID chip is connected with a first pin and a second pin, the RFID chip forms a first far-field antenna loop through the first pin, the upper contact, the upper cover and a conductor, and the second pin is electrically connected with the lower contact; and
the bolt seat is provided with an elastic device, an internal antenna, an inserting hole for inserting the lower part of a conductor and a second buckle for positioning the first buckle, and the elastic device is controlled to provide pre-pressure for the internal antenna and the lower contact to be electrically connected so as to start the RFID chip and the internal antenna to form a second far-field antenna loop, synchronously start the first far-field antenna loop and simultaneously cut off the first far-field antenna loop and the second far-field antenna loop when the upper cover is separated.
2. The electronic seal of claim 1, wherein: the first far-field antenna loop and the second far-field antenna loop form an asymmetric antenna configuration, and the power of the second far-field antenna loop is controlled to be larger than that of the first far-field antenna loop, so that the first far-field antenna loop and the second far-field antenna loop can be cut off simultaneously when the conductor is cut off.
3. The electronic seal of claim 2, wherein: the first and second pins of the RFID chip maintain normally open contacts.
4. An electronic seal according to any one of claims 1 to 3, wherein: the elastic device consists of a first unit and a second unit; when the first and second far-field antenna loops are activated, the first unit is caused to provide positive pre-compression required for the electrical connection of the internal antenna and the lower contact, but when the upper cover is worn out, the second unit is caused to provide negative pre-compression required for the detachment of the lower contact from the internal antenna.
5. The electronic seal of claim 4, wherein: the second unit is provided with a reed inside the bolt seat, the reed is positioned between the upper part of the internal antenna and the lower part of the jack, and a guide hole is penetrated, when the first buckle and the second buckle are positioned, the guide hole can pass through the lower contact point, but can not pass through the bottom end of the conductor, so that the bottom end of the conductor can push the reed to deform, and a negative pre-pressure is provided for the bottom end of the conductor.
6. The electronic seal of claim 5, wherein: the bolt seat is formed by combining a first shell seat and a second shell seat, then placing the first shell seat and the second shell seat into a hollow shell, and closing the bottom end of the shell by a bottom cover; the upper part of the bolt seat is provided with a jack for inserting and closing the lower part of the conductor, and the reed is integrally formed on the first shell seat.
7. The electronic seal of claim 4, wherein: the conductor is provided with a sinking hole with an inner diameter larger than that of the hole at the bottom edge of the containing hole; the circuit board is arranged in the accommodating hole through an insulating plate, the bottom end of the insulating plate is provided with a second buckling part, the second buckling part is provided with a slot for a lower contact to pass through from top to bottom, and when the upper contact is abutted against the upper cover, the second buckling part is positioned at a position protruding out of the bottom end of the sinking cavity, but after the upper cover is separated, the second unit can provide a part of negative pre-pressing force for the bottom end of the conductor, so that the sinking cavity can limit the second buckling part.
8. An electronic seal according to any one of claims 1 to 3, wherein: the circuit board is bridged with a first wiring between the first pin and the upper contact point, and is also provided with a second wiring between the second pin and the lower contact point.
9. The electronic seal of claim 8, wherein: the circuit board is provided with a first surface and a second surface which are opposite to each other, a first hole and a second hole which penetrate through the first surface and the second surface are arranged at intervals, the RFID chip is arranged on the first surface, a first pin is positioned in the first hole, a second pin is positioned in the second hole, a first wiring is arranged between the first pin and an upper contact point on the first surface, and a second wiring is arranged between a lower contact point and the second pin on the second surface; the circuit board is arranged in the accommodating hole through an insulating plate, and the insulating plate is arranged on the second surface of the circuit board in a group mode and is used for isolating the second wiring.
10. The electronic seal of claim 9, wherein: the conductor is provided with a head hole with an inner diameter larger than the hole at the Rong Kongding edge, and a cover hole with an inner diameter larger than the head hole is arranged at the top edge of the head hole, and the cover hole is closed by a cover; the circuit board is arranged in the accommodating hole through an insulating plate, the insulating plate is arranged on the second surface of the circuit board in a group mode and used for isolating the second wiring, the insulating plate is provided with a first fastener which can be arranged in the head hole, the first fastener at least comprises a spring plate which extends downwards, the bottom end of the spring plate abuts against the bottom end of the head hole, and the upper contact is driven to abut against the upper cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810920818.3A CN110826677B (en) | 2018-08-14 | 2018-08-14 | Electronic seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810920818.3A CN110826677B (en) | 2018-08-14 | 2018-08-14 | Electronic seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110826677A CN110826677A (en) | 2020-02-21 |
| CN110826677B true CN110826677B (en) | 2023-07-18 |
Family
ID=69547046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810920818.3A Active CN110826677B (en) | 2018-08-14 | 2018-08-14 | Electronic seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110826677B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830731A (en) * | 2004-09-23 | 2006-09-13 | 林连丰 | Electronic seal |
| TW201224263A (en) * | 2010-12-06 | 2012-06-16 | zhi-quan Chen | E-seal |
| TW201544670A (en) * | 2014-05-29 | 2015-12-01 | zhi-quan Chen | Tamperproof electronic seal |
| CN105321420A (en) * | 2014-06-30 | 2016-02-10 | 陈志权 | Falsifying-preventing electronic strip seal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030011474A1 (en) * | 2001-07-13 | 2003-01-16 | Ng Sing King | Circuit and method for electronic security seal |
| TWM264261U (en) * | 2004-05-31 | 2005-05-11 | Lian-Feng Lin | Lock device featuring with identification and anti-counterfeiting functions |
| US9508271B2 (en) * | 2014-12-12 | 2016-11-29 | Chih-Chuan Chen | Electronic bolt seal |
-
2018
- 2018-08-14 CN CN201810920818.3A patent/CN110826677B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830731A (en) * | 2004-09-23 | 2006-09-13 | 林连丰 | Electronic seal |
| TW201224263A (en) * | 2010-12-06 | 2012-06-16 | zhi-quan Chen | E-seal |
| TW201544670A (en) * | 2014-05-29 | 2015-12-01 | zhi-quan Chen | Tamperproof electronic seal |
| CN105321420A (en) * | 2014-06-30 | 2016-02-10 | 陈志权 | Falsifying-preventing electronic strip seal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110826677A (en) | 2020-02-21 |
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