KR20000061122A - Active RF-Tag System for preventing something in hand from losing - Google Patents

Abstract

PURPOSE: An active RF-Tag system is provided to have a small size and to be a low cost. CONSTITUTION: An active RF-Tag system is used to prevent one's thins from being lost, and consists of a tag portion and a reader portion. The tag portion is attached at one's things by miniaturizing a radio frequency identification apparatus which is used in general, and the reader portion is carried by a person. When one's things, to which a small-sized tag portion of a speaker type is attached, are out of a predetermined distance, the reader portion recognizes it and generates an alarm.

Description

Active RF-Tag System for preventing something in hand from losing}

Key Word: RFID, Reader, Tag, Unique Code, Loss Prevention System

[Problems or Disadvantages of Conventional Technology]

Currently, the existing technology is used in Korea is mainly used for doors of important buildings or university parking lot management. It is a form that automatically opens the lock when you put an ID card equipped with an RF-tag of a person who can enter and exit the reader, and attaches the RF-tag to the windshield of the car and approaches the parking control station. . The problem with the existing technology is that the product is expensive and bulky due to the specificity of the application.

Therefore, the present invention focuses on practicality and popularity to make a compact and inexpensive product.

[Purpose of invention]

The present invention is an RF-Tag system for preventing the loss of belongings. The RFID (Radio Frequency IDentification) device, which is currently commercialized in developed countries, has been miniaturized, the tag is attached to belongings, and the reader has a body structure. If the belongings with a small tag in the form of a sticker are out of a certain distance, the reader recognizes and generates an alarm sound. The system specifications are as follows.

-Tag is shaped like a sticker and its thickness is about 2mm.

-Reader can be in various forms such as credit card type, buckle type, key holder type, etc.

-Alarm is activated when spaced over 3 [m].

-Low voltage (3V), low power (within 1mW) consumption for more than 3 years.

-Frequency is 100-500 kHz.

-The consumer price of the product should be about 10,000 won.

[Structure, method and technical features of the invention]

1) Development of a Loss Prevention System

2) You can manage various tags with one Reader.

3) RFID can be low cost, short distance and small size.

4) The volume of power can be reduced by short distance low power communication.

[Operation principle and method of invention]

The present invention is a general technology required for the RF-Tag for preventing the loss of belongings. The RFID (Radio Frequency IDentification) device, which is currently commercialized in developed countries, has been miniaturized, the tag is attached to belongings, and the reader has a body structure. Therefore, when the belongings with the tag deviate from a certain distance, the reader recognizes and generates an alarm sound.

General RFID is composed of Tag, Reader and information processing device. When the Reader receives the response signal of the Tag and transmits it to the information processing device, the information processing device takes action according to its purpose. RFID can be divided into many aspects. When successful implementation of the present invention secures reader and RF-tag miniaturization technology, it attaches a tag in the form of a well-designed sticker to important belongings (for example, a briefcase, a mobile phone, a wallet, etc.), and the reader is a belt buckle, key holder, etc. It can always be attached to an object attached to the body to create a set of loss prevention systems. A more advanced form is one that can be programmed to manage multiple tags with a single reader. Accordingly, the present invention is to develop a technology for low-cost, short-range and miniaturized RFID. The feasibility of this invention is that only a very simple information processing device such as a beep is required due to the characteristics of the product to which the present invention is to be applied, and the volume of power can be reduced due to the characteristics of short-range low power communication.

Missing technical challenges for invention

1 is an operation overview of RF-Tag

Figure 2 is a detailed view of the RF-Tag

Table 1 shows the characteristics according to the frequency band used.

Table 2 shows the form of RF-Tag according to the power supply method

Figure 1 shows the operation of the RF-Tag Main (Reader) receives a unique code of the Sub (Tag). In this case, an RFID (Radio Frequency IDentification) device, which is commercially available in developed countries, is used as a device that receives a tag response signal and delivers it to an information processing device.

FIG. 2 is a detailed diagram of the structure of the RF-Tag. In the main (reader), a microprocessor chip is embedded and a code list is stored to store a unique code list of each tag. When the distance between Main (Reader) and Sub (Tag) is within 3 [m], Main (Reader) and Sub (Tag) transmit and receive codes unique to each other by RF for a predetermined time. If the tag is more than 3 [m], the alarm will sound because Main (Reader) does not receive the Sub (Tag) unique code as a transmission signal. This type is an active type, because the battery is built in the power supply method, the system is simple and stable operation, and the price is inexpensive.

Table 1 shows the system characteristics and application examples of RFID according to the frequency band used.

Table 2 shows the types of RF-Tag according to the supply method.

[Name of main parts shown in drawing]

1. Reader of FIG. 1: If a predetermined code does not enter within a certain time, an alarm sounds.

2. Tag of FIG. 1: Unique code transmission at regular intervals

3. Code List of FIG. 1: stores a unique code of each Sub (Tag).

4. PWR of FIG. 1: As the power supply terminal, the battery is responsible for the function.

5. S / P of FIG. 1: Serial and Parallel Port

6. Process of FIG. 1: The microprocessor is composed of the same chip in Main (Reader) and Sub (Tag).

7. Alarm of FIG. 1: Alarm sounds when Main (Reader) does not recognize Tag's unique code within a certain time.

8. RF-Circuit of FIG. 1: Information processing apparatus for transmitting and receiving response signals of Main (Reader) and Sub (Tag)

Missing configuration and action of the invention

○ Expected Effect of Technology Development

Expected effects of technology development include export and import substitution. Given that there are no loss-proof miniature RF-Tag products imported into Korea yet, it is possible to guess the possibility of export.If this type of product comes in from abroad, if Korea has the technology, You will see the effect. It is too early to present accurate figures because the products of the technology targeted by this project have not been introduced and sold in the market, but it is too early to provide accurate figures. Telephone subscribers are said to have exceeded 10 million. Assuming that 10% of those concerned about the loss of a mobile radio phone or 10% of those who attach a sticker to a mobile radio phone, the expected effect is great. In addition, more sales can be expected through the development and export of other applications.

Claims (2)

Technical method of receiving and processing response signal between reader and tag Data base managing this technology