CN201142169Y - Electronic seal - Google Patents

Abstract

The utility model relates to an electronic seal, mainly in 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 connect above-mentioned radio frequency chip and the antenna is the transmission conductor of electric connection, wherein, two metal pipe bodies that constitute the bolt seat main part also are two dipole components of antenna, a metal pipe body in-connection is equipped with the metal inner tube, another metal pipe body has the point of presenting, the transmission conductor passes the metal inner tube and links in the point of presenting, in order to constitute transmission conductor coaxial in the metal inner tube, metal inner tube ground connection is in the coaxial dipole antenna who feeds the formula of metal pipe body, in order to reach the radio frequency transmission and do not receive the interference, and possess sturdy and durable, environmental protection can be saved, and the electronic seal of product appearance is pleasing.

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 container being dropped or stolen during transportation, but the traditional seal needs to be distinguished by human visual inspection, and it is inevitable that human error or forgery will lead to the failure of the expected function. According to the current method of manual escort, the customs must go to different customs areas for inspection by car, which not only increases administrative costs, but also delays the customs clearance time of manufacturers.

Therefore, the radio frequency identification system (RFID) electronic seal developed by someone is a new type of seal that combines traditional container locks and RFID (Radio Frequency IDentification) technology. It uses the uniqueness and difficult-to-forge characteristics of the radio frequency identification system to reduce container swapping. risk, 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 type can be distinguished by the power supply of the radio frequency chip. (passive) or active (active), the RFID unit that actively transmits RF signals is called an active tag, which can be read and written and reusable. Due to its internal power supply, it can be used in a wider range of applications than passive tag chips. If all containers with a radius of about 50 meters (or even farther) from the monitoring reader are improperly opened, the back-end system can immediately find that the container has been damaged or intruded, but the price of this active radio frequency electronic seal It is tall and has a large appearance. Because it needs to use battery power to transmit signals, 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 not work through a special design, and the reader will not be able to identify it. China Utility Model 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 is only made of a metal wire coiled into a spiral shape, and its transmission The distance is short, and it is susceptible to noise interference, 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 make the increasingly complex freight transportation and speed up freight management, as well as the urgent need for container security in the global anti-terrorism atmosphere, therefore There is also an urgent need for "computerization" of 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.

4. Reduce the use of plastic materials to achieve cost savings and environmental protection.

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

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

Another purpose of the utility model is to be durable, environmentally friendly and energy-saving.

In order to achieve the above-mentioned purpose, the utility model is embedded in the plug and the plug seat that can form a lock, respectively. A radio frequency identification tag composed of a radio frequency chip, an antenna, and a transmission conductor that connects the above radio frequency chip and the antenna is electrically connected. If the plug is separated from the socket, the transmission conductor between the radio frequency chip and the antenna will be broken and the circuit connection will be lost, 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, and the two metal tubes that constitute the main body of the plug seat are used as the two dipole elements of the antenna, and a metal tube A metal inner tube is built in, and another metal tube body has a feed-in point. The transmission conductor passes through the metal inner tube of the metal tube body and is connected to the feed-in point to form a transmission conductor coaxial with the metal inner tube, and the metal inner tube is grounded on the Coaxial feed dipole antenna with metal tube body.

Compared with the prior art, the utility model has a simple structure, reduces the use of insulating plastics, and achieves the effects of energy saving, environmental protection and easy manufacture.

Description of drawings

FIG. 1A and FIG. 1B are structural schematic diagrams of 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.

Fig. 4 is a combined schematic diagram of the antenna of the present invention.

Fig. 5 is a schematic structural diagram of a conventional coaxial cable.

Figure number:

1 Pin seat 1a, 1b Metal tube body

11 closed end 111 feed-in point

12 Metal inner tube 121 Insulation block

13 Connecting piece 14 Metal conductor

141 insulation block 15 connector

16 insulation block 17 shell

171 C-shaped buckle 172 Water-stop O-ring

2 Pin 21 Metal pipe body

211 Plug 212 Groove

22 Shell 23 Metal conductor

24 insulation block 3 radio frequency chip

4 Antenna 5 Coaxial cable

51 Wire rod 52 Plastic insulating layer

53 metal braid

Detailed ways

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.

In order to allow the technical content of the present utility model to be clearer and easier to understand, the preferred specific embodiments are specially cited as follows:

Fig. 1A and Fig. 1B are the structure schematic diagram of a preferred specific embodiment of the present utility model, and refer to other figure shown together, can find out clearly from the figure, the present utility model is mainly by lock portion, and built-in lock The internal radio frequency chip 3 and the antenna 4 are formed. The lock part is composed of a latch seat 1 and a latch 2, which can be butted with each other to form a closed shape. The latch seat 1 is composed of two hollow metal pipes 1a, 1b matched with an insulating block 16, and is covered with a shell on the outside. Body 17 constitutes 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 metal inner tube 12 with a smaller diameter. One end of the inner tube 12 is connected and fixed on one end edge of the metal tube body 1b through a connecting piece 13, so that the metal inner tube 12 is suspended in the metal tube body 1b, and the metal inner tube 12 protrudes outside the metal tube body 1b . An insulating block 141 is used to insulate and fix a transmission conductor made of metal material inside the metal inner tube 12. The utility model takes the metal conductor 14 as an example. One end of the metal conductor 14 is connected to the feed-in point 111, and the other end is protruding. Stretch in the metal inner tube 12. The outer side of the metal inner tube 12 is sleeved with a connector 15 to be electrically connected, and an insulating block 121 is used to fix the metal tube body 1b and the metal inner tube 12. The inner side of the edge of the shell 17 is provided with a C-shaped buckle 171 and Waterstop O-ring 172.

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, in the hollow tube of the metal tube body 21, a transmission conductor made of a metal material is insulated and fixed with an insulating block 24. The utility model takes the metal conductor 14 as an embodiment, and one end of the metal conductor 23 is electrically connected with the radio frequency chip 3.

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 plug 2 and the plug seat 1, and the telecommunication transmission of the radio frequency chip 3 and the antenna 4 is arranged on the plug 2 and the metal conductors 14, 23 in the socket 1 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 socket 15 on the plug seat 1, so that the metal conductors in the plug seat 1 and the plug 2 14 and 23 are electrically connected, and the metal inner tube 12 and the metal pipe body 21 are electrically connected through the connector 15 to form a mutual buckle. At this time, the C-shaped buckle 171 on the plug seat 1 is At the same time, it is inserted into the groove 212 on the pin socket 2 to achieve a locking effect, and the water-stop O-ring 172 is used to seal the gap between the pin 2 and the pin socket 1 to prevent water from flowing into it. The radio frequency chip 3 and the antenna 4 in the plug 2 are connected by the metal conductors 14 and 23 in the plug seat 1 and the plug 2, so that a wireless radio frequency function can be generated, and the information on the radio frequency chip 3 (such as the number of commodities, data...) It can be read by the reader and transmitted to the back-end system for monitoring. If the lock is damaged and opened in any way, the pin 2 will be pulled out from the pin seat 1. At this time, the radio frequency chip 3 in the pin seat 1 and the pin 2 And the antenna 4 interrupts the telecommunication transmission between the metal conductors 14 and 23 due to the inability to be electrically connected, 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 body structure of the socket 1: the metal pipe body 1a, 1b is regarded as two dipole elements of the antenna 4 (as shown in Fig. 3, As shown in Fig. 4 ), an insulating block 16 is used to isolate and set, and a feed-in point 111 and a metal inner tube 12 are respectively arranged in the metal pipe body 1a, 1b, so that the metal conductor 14 connected to the feed-in point 111 is coaxial In the metal inner tube 12, the metal inner tube 12 is grounded to the metal tube body 1b, forming a coaxial feeding dipole antenna, so it can prevent interference, suppress noise, and ensure that the signal between the antenna 4 and the radio frequency chip 3 is not easy to attenuate . A plug connector 15 is sleeved on the metal inner tube 12, and the plug connector 15 is electrically connected with the metal inner tube 12 for coaxial feeding signal connection of external electronic products.

In addition, the metal conductor 14 is a cylindrical metal material, so it is not easy to bend compared with the wire 51 in the existing coaxial cable 5 (as shown in Figure 5 ), so as long as the two ends of the metal conductor 14 are fixed, it can ensure the crossing When the metal inner tube 12 is used, it prevents the two from touching each other and causing a short circuit. Since the existing plastic insulating layer 52 is reduced, its manufacturing cost and manufacturing process are naturally cheaper, simpler, and both The effect of environmental protection and energy saving, and the metal braiding layer 53 of the existing coaxial cable 5 is replaced by the metal inner tube 12, so the whole antenna structure is naturally compared with the prior art using the metal braiding layer 53 of the coaxial cable 5, Or the antenna in which the metal wire 51 and the metal dipole element are connected is relatively firm.

With the help of the above-mentioned technical means, the electronic seal completed by the utility model has a simple structure. Through the combination of the traditional bullet type container mechanical lock and the radio frequency identification system, it can effectively improve the manpower and carrier costs increased by the manual escorting process of the container, and It can reduce the risk of freight being swapped and 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 by the utility model is unprecedented, and can indeed achieve the expected effect, and is available for industrial use, and fully meets the requirements of the utility model patent.

The illustrations and descriptions disclosed above are only preferred examples of the present invention, and modifications or equivalent changes made by those skilled in the art according to the spirit of the present case shall still be included in the scope of the claims of the present case.

Claims (5)

1. e-seals, described e-seals comprises:

One lock section is made up of latch, plug housing, can form locking, and tool one plug connector on the plug housing can dock mutually for the plug on the latch;

One radio frequency identification system, by radio frequency chip and circuit thereof, antenna, and link the transmission conductor that above-mentioned radio frequency chip and antenna be electrically connect and constitute, be embedded in respectively in plug housing and the latch, it is characterized in that: the antenna that is embedded in the plug housing, constitute two dipole element of dipole antenna with the setting of insulator fixed interval by two metal bodys, and form the agent structure of plug housing simultaneously, one metal body, one end is closed and has a load point, the built-in metal inner pipe of another metal body, the one end links to each other with described metal inner pipe and metal inner pipe is suspended in the described metal body, transmission conductor and load point are electrically connect and are extended, and pass and do not manage in the contacting metal, and then it is coaxial in metal inner pipe to form transmission conductor, and metal inner pipe is grounded on the coaxial formula dipole antenna of presenting of metal body.

2. e-seals as claimed in claim 1 is characterized in that, the plug connector on the plug housing is embedded on the metal inner pipe and is electrically connect.

3. e-seals as claimed in claim 2 is characterized in that, has the transmission conductor of coaxial signal transmission in the latch, inserts in plug housing.

4. e-seals as claimed in claim 1 is characterized in that, transmission conductor is columned metal material.

5. e-seals as claimed in claim 1 is characterized in that, transmission conductor by collets to be fixed in the metal inner pipe.

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