CN201142170Y - Electronic seal - Google Patents

Abstract

The utility model relates to an electronic seal, mainly by the bolt that can form the shutting, in the bolt seat, install the radio frequency chip and the antenna of wireless radio frequency identification system respectively, and link above-mentioned radio frequency chip and the transmission conductor that the antenna is electric connection, wherein, two metal pipe bodies that constitute the bolt seat main part also are two dipole components of antenna, earth connection on the transmission conductor uses the insulating layer and the cladding outside the feed line, and be electric connection with two metal pipes respectively, and hide in arranging the metal pipe body in, in order to constitute coaxial feed formula's dipole antenna, it is good to reach the radio frequency transmission, and can the noise suppression, and have the electronic seal of product aesthetic in appearance.

Description

Electronic seal

technical field

The utility model relates to an electronic seal, especially a passive seal combining traditional bullet type container locks and radio frequency identification (Radio Frequency IDentification) technology.

Background technique

Generally, the traditional container seal is mainly to avoid the risk of being dropped or stolen during the transportation of the container, but the above-mentioned traditional seal needs to be distinguished by human visual inspection, and it is inevitable that human error or forgery will lead to the unexpected failure. Function, in the current way of manual escort, the customs must go to different customs areas for inspection by car, which not only increases administrative costs, but also delays customs clearance time for manufacturers.

Therefore, some people in the industry have developed radio frequency identification system (RFID) electronic seals, which combine traditional container locks and new seals with RFID (Radio Frequency IDentification) technology, and use the uniqueness and difficult-to-forge characteristics of radio frequency identification systems to reduce the risk of containers being swapped. , and this electronic seal is equipped with a radio frequency chip. Once locked, the information on the radio frequency chip can be read by the reader and transmitted to the back-end system, and the passive (passive) can be distinguished by the power supply of the radio frequency chip. ) or active (active), the RFID unit that actively transmits RF signals is called an active tag. Whether all the containers within a radius of 50 meters (or even farther) are improperly opened, the back-end system can immediately find that the containers have been damaged or intruded, but the price of this kind of active radio frequency electronic seal is relatively high And the appearance is large, because it needs to use the battery power to transmit the signal, so it must be replaced regularly, which makes it difficult to recycle.

The electronic seal of the passive label, because there is no power supply inside, can only perform RF signal reflection or backscatter transmission. It is read-only and cannot be reused, but the price is cheap. It is mainly responsible for storing the relevant information of the identified object, such as the name of the product. , serial number, specifications, etc. If the electronic seal is broken and opened in any way, the radio frequency chip will be permanently damaged and unable to operate through special design, and the reader will not be able to identify it. And as China's new patent application No. 200620039634.9 "UHF Omnidirectional Passive Electronic Container Lock", although the bullet-shaped container lock has a built-in RFID wireless radio frequency device, its antenna only utilizes a metal wire to be wound into a spiral shape. The transmission distance is short, so it needs to be strengthened.

Due to the increasing volume of international freight, it is necessary to strictly control the daily import and export. In order to meet the increasingly complex freight transportation and speed up freight management, as well as the urgent need for container security under the global anti-terrorist atmosphere, Therefore, it is urgent to "computerize" freight management in the port. If there is a suitable and practical electronic seal, the following positive benefits can be obtained:

1. Effectively improve the manpower and carrier costs increased in the manual escort process.

2. Reduce the risk of cargo being dropped or stolen.

3. Long transmission distance, easy to use, increase market share.

Therefore, designing an electronic seal that is simple in structure, easy to operate, and meets market demand is the problem to be solved by the utility model.

Utility model content

The main purpose of the utility model is to achieve an electronic seal that has a long radio frequency transmission distance, is not easily disturbed, and can maintain the beautiful appearance of the product.

In order to achieve the above-mentioned purpose, the utility model is respectively embedded with a radio frequency identification system composed of a radio frequency chip, an antenna, and a transmission conductor that is electrically connected to the radio frequency chip and the antenna in the latch and the latch seat that can form a lock. If the plug is separated from the socket, the transmission conductor between the radio frequency chip and the antenna will break and lose the circuit connection, thereby losing the radio frequency function. Among them, the transmission mode between the radio frequency chip and the antenna is a coaxial feeding transmission that can prevent interference and suppress noise. The grounding wire and the feeding wire on the transmission conductor are electrically connected to two metal tubes respectively, and are hidden in the metal tubes. The product has a beautiful appearance, good radio frequency transmission, and can suppress noise.

As for the detailed structure, use effect and application principle of the present utility model, then complete cognition can be obtained with reference to the description made in the accompanying drawings.

Description of drawings

FIG. 1A is a schematic structural diagram of a socket according to a preferred embodiment of the present invention.

Fig. 1B is a schematic structural diagram of a latch according to a preferred embodiment of the present invention.

Fig. 2 is a combined schematic diagram of a preferred embodiment of the present invention.

Fig. 3 is a structural schematic diagram of the antenna of the present invention.

Reference number

1.......Lock seat 2.......Lock

1a, 1b.........Metal pipe body 11..........Closed end

111.......Feed-in point 12..........Insulation block

13......Fixed block 14.........Shell

141.....C-type buckle 142............Water-stop O-ring

21....Metal pipe body 211...........Plug

212....Groove 22....Shell

23..........Transmission conductor 231...........Metal wire

232............ Insulation layer 24...........Cable insert

3.....RF chip 4....antenna

5....Transmission conductor 51....Feeder line

52..........Insulation layer 53................Ground wire

54.......Insulation layer 55.................Connector

Detailed ways

Cooperate with accompanying drawing below and particularly cite the preferred specific embodiment of the utility model and explain as follows:

Fig. 1A-Fig. 1B is the structure schematic diagram of a preferred specific embodiment of the present utility model, and together with reference to other figure shown, can clearly find out from the figure, the present utility model is mainly by lock part, and built-in lock The internal radio frequency chip 3 and the antenna 4 are formed. The lock part is composed of a bolt seat 1 and a bolt 2, which can be butted with each other to form a closed shape. The bolt seat 1 is composed of two hollow metal pipes 1a, 1b matched with an insulating block 12, and is covered on the outside There is a housing 14 to form its main body, a metal pipe body 1a has a closed end 11 at one end of the nozzle, and a feed-in point 111 is provided on the closed end 11, and another metal pipe body 1b has a built-in transmission conductor 5, the transmission conductor 5 The structure from inside to outside is: feeding line 51, insulating layer 52, grounding line 53, insulating layer 54, wherein, the feeding line 51 of one end of the transmission conductor 5 protrudes through the insulating block 12 between the metal pipes 1a, 1b and The feed-in point 111 on the metal pipe body 1a is electrically connected, and the ground wire 53 is electrically connected to the metal pipe body 1b, and the other end of the transmission conductor 5 is sleeved with a socket 55 and the ground wire of the transmission wire 5 53 is electrically connected, and a fixed block 13 is used to position the transmission wire 5 in the metal pipe body 1b. A C-shaped buckle 141 and a water-proof O-shaped gasket 142 are provided inside the edge of the casing 14 . The plug 2 is composed of a metal tube body 21 covered with a shell 22. A conical plug 211 with a groove 212 is formed at the front end of the metal tube body 21, and a radio frequency chip 3 and its components are embedded in the rear end. circuit, a transmission conductor 23 with a cable insert 24 is accommodated in the hollow tube of the metal pipe body 21, a metal wire 231 is inside the transmission conductor 23, and an insulating layer 232 is covered on the outside, and one end of the transmission conductor 23 is connected to the The radio frequency chip 3 is electrically connected. The radio frequency identification system is composed of a radio frequency chip 3 and an antenna 4. The radio frequency chip 3 and the antenna 4 are respectively placed in the above-mentioned socket 1 and the socket 2, and the telecommunication transmission of the radio frequency chip 3 and the antenna 4 is arranged on the socket The transmission conductors 5 and 23 in the seat 1 and the plug 2 are used to achieve the wireless radio frequency function.

When the plug 2 is inserted into the plug seat 1 (as shown in Figure 2), the plug 211 at the front end of the plug 2 is forced into the plug seat 1, so that the cable insert 24 is snapped into the socket 55, so that the plug seat 1. The feed wire 51 in the plug 2 is electrically connected to the metal wire 231, and the metal pipe body 21 and the grounding wire 53 are electrically connected through the connector 55 and the cable insert 24 to form a mutual buckle. At this time, the C-shaped buckle 141 on the pin socket 1 is snapped into the groove 212 on the pin socket 2 at the same time to achieve the locking effect, and the gap between the pin 2 and the pin socket 1 is sealed by the water-stop O-ring 142 , to prevent water from flowing into it. The radio frequency chip 3 and the antenna 4 in the plug 2 are connected by the feed wire 51 and the metal wire 231 in the plug seat 1 and the plug 2, so that a wireless radio frequency function can be generated, and the connection between the ground wire 53 and the metal pipe body 21 can be realized. Form a coaxial feeding transmission with anti-interference and noise suppression, because the information on the radio frequency chip 3 (such as the number of goods, data...) can be read by the accurate reader and transmitted to the back-end system for monitoring. The part is damaged and opened in any way so that the plug 2 is pulled out from the plug seat 1. At this time, the radio frequency chip 3 and the antenna 4 in the plug seat 1 and the plug 2 cannot be electrically connected due to the transmission conductors 5 and 23. The telecommunications transmission is interrupted, causing the radio frequency chip 3 to fail to operate and thus lose the radio frequency identification function.

The biggest difference between the utility model and the existing structure is that the antenna 4 of the radio frequency identification system regards the main structure of the plug seat 1: the metal pipe body 1a, 1b as two dipole elements of the antenna 4 (as shown in Figure 3) , separated by an insulating block 12 and fixedly arranged, so its receiving distance is naturally better than that of an antenna made of only one wire wound into a helical shape.

With the help of the technical means disclosed above, the utility model completes the electronic seal, which has a simple structure. Through the combination of the traditional bullet type container mechanical lock and the radio frequency identification label, it can effectively improve the manpower and shipping cost of the container in the process of manual escort. It can also reduce the risk of freight being dropped or stolen, and it has positive benefits for the current global business transactions and corporate management that emphasizes efficiency in everything.

To sum up, the structure disclosed in the present invention is unprecedented, and can indeed achieve the expected effect, and can be used in industry.

The illustrations and descriptions disclosed above are only preferred examples of the present invention, and modifications or equivalent changes made by those who are familiar with this technology according to the spirit of this case should still be included in the scope of the claims of this case.

Claims (3)

1. An electronic seal, comprising: A lock part, which is composed of a latch and a latch seat, can form a lock, and the latch seat has a connector, which can be used for the plugs on the latch to be connected to each other; A radio frequency identification system, consisting of a radio frequency chip and its circuit, an antenna, and a transmission conductor connecting the above radio frequency chip and the antenna to be electrically connected, respectively embedded in the plug seat and the plug, is characterized in that: The two metal tubes constituting the main body of the socket are also two dipole elements of the antenna. The two metal tubes are arranged at intervals of an insulating block. It is electrically connected with two metal tubes and hidden in the metal tube to form a coaxial feeding dipole antenna. 2 . The electronic seal as claimed in claim 1 , wherein the connector on the plug socket is embedded in the transmission conductor, and is electrically connected to the ground wire, so that the plug can be used as a coaxial feed signal connection. 3 . 3. The electronic seal according to claim 1, wherein the pin is a metal tube, and a transmission conductor and a cable insert are placed in the tube.

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